/* roulang page: index */
:root {
            --primary: #3A7BFF;
            --primary-hover: #1E55D6;
            --primary-light: #5B8DFF;
            --primary-lighter: #DCE8FF;
            --primary-lightest: #EAF1FF;
            --bg-light: #F5F7FB;
            --bg-lighter: #F8FAFD;
            --bg-white: #FFFFFF;
            --text-dark: #1C2434;
            --text-body: #2A3248;
            --text-secondary: #5C657A;
            --text-muted: #8B94A7;
            --border-light: #E1E6F0;
            --border-mid: #D1D9E8;
            --accent-teal: #20A9A0;
            --accent-gold: #C9A86A;
            --error: #C04444;
            --success: #2E8B57;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-card: 16px;
            --radius-lg: 22px;
            --shadow-card: 0 6px 20px rgba(28, 36, 52, 0.05);
            --shadow-card-hover: 0 12px 28px rgba(30, 85, 214, 0.12);
            --shadow-nav: 0 2px 12px rgba(0, 0, 0, 0.04);
            --shadow-nav-scrolled: 0 4px 16px rgba(28, 36, 52, 0.08);
            --container-max: 1200px;
            --section-gap: 96px;
            --section-gap-mobile: 56px;
            --transition: 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-white);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        a:hover {
            color: var(--primary-hover);
        }

        button,
        input,
        textarea {
            font-family: var(--font-family);
            font-size: 16px;
            outline: none;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4 {
            color: var(--text-dark);
            line-height: 1.35;
            font-weight: 700;
        }

        h1 {
            font-size: 42px;
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        h2 {
            font-size: 28px;
            font-weight: 650;
            letter-spacing: -0.01em;
        }

        h3 {
            font-size: 20px;
            font-weight: 600;
        }

        p {
            margin-bottom: 1rem;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-gap) 0;
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-lightest);
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
        }

        .section-header h2 {
            margin-bottom: 12px;
        }

        .section-header .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(58, 123, 255, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            box-shadow: 0 6px 18px rgba(30, 85, 214, 0.3);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(30, 85, 214, 0.2);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: rgba(58, 123, 255, 0.08);
            border-color: var(--primary-hover);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }

        .btn-glass {
            background: rgba(255, 255, 255, 0.72);
            border: 1px solid rgba(255, 255, 255, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            color: var(--text-dark);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
        }
        .btn-glass:hover {
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }

        .btn-sm {
            height: 36px;
            padding: 0 18px;
            font-size: 14px;
            border-radius: 6px;
        }

        /* ============ NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 0;
            transition: all var(--transition);
            background: rgba(255, 255, 255, 0.68);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(225, 230, 240, 0.55);
            box-shadow: var(--shadow-nav);
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom-color: var(--border-light);
            box-shadow: var(--shadow-nav-scrolled);
            padding: 10px 0;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            box-shadow: 0 4px 10px rgba(58, 123, 255, 0.3);
        }

        .nav-logo .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: 0.01em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .nav-links a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 6px;
            position: relative;
            transition: all var(--transition);
        }

        .nav-links a:hover {
            color: var(--primary);
            background: rgba(58, 123, 255, 0.06);
        }

        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .search-toggle {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-body);
            background: rgba(255, 255, 255, 0.6);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .search-toggle:hover {
            color: var(--primary);
            border-color: var(--primary-light);
            background: var(--primary-lightest);
        }

        .search-panel {
            position: absolute;
            top: 100%;
            right: 0;
            left: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-nav-scrolled);
            transform-origin: top;
            transform: scaleY(0);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 999;
        }
        .search-panel.open {
            transform: scaleY(1);
            opacity: 1;
            visibility: visible;
        }
        .search-panel input {
            width: 100%;
            max-width: 600px;
            margin: 0 auto;
            display: block;
            height: 46px;
            padding: 0 18px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-input);
            font-size: 16px;
            background: var(--bg-white);
            color: var(--text-body);
            transition: all var(--transition);
        }
        .search-panel input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.12);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 8px;
            border: 1px solid var(--border-light);
            background: rgba(255, 255, 255, 0.7);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            transition: all var(--transition);
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-body);
            border-radius: 1px;
            transition: all var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--primary-light);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 998;
            padding: 24px;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
            border-top: 1px solid var(--border-light);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            display: block;
            padding: 14px 16px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 8px;
            transition: all var(--transition);
        }
        .mobile-menu a:hover {
            background: var(--primary-lightest);
            color: var(--primary);
        }
        .mobile-menu a.active {
            background: var(--primary-lightest);
            color: var(--primary);
            font-weight: 600;
        }
        .mobile-menu .btn {
            margin-top: 16px;
            width: 100%;
        }

        /* ============ HERO ============ */
        .hero {
            min-height: 620px;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(180deg, #EAF1FF 0%, #F8FAFD 55%, #FFFFFF 100%);
            padding-top: 100px;
            padding-bottom: 60px;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
        }
        .hero .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 48px;
        }
        .hero-content {
            flex: 1;
            max-width: 620px;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(58, 123, 255, 0.1);
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .hero-content h1 {
            font-size: 42px;
            line-height: 1.3;
            margin-bottom: 20px;
            color: var(--text-dark);
        }
        .hero-content h1 .highlight {
            color: var(--primary);
        }
        .hero-content .hero-desc {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 28px;
        }
        .hero-points {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 28px;
        }
        .hero-points li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text-body);
        }
        .hero-points li .check {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary-lightest);
            border: 1.5px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 3px;
            color: var(--primary);
            font-size: 11px;
            font-weight: 700;
        }
        .hero-cta {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .hero-trust {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
        }
        .hero-trust .trust-item {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .hero-trust .trust-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
        }
        .hero-visual {
            flex-shrink: 0;
            width: 380px;
            height: 420px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(28, 36, 52, 0.1);
            border: 4px solid rgba(255, 255, 255, 0.7);
            position: relative;
        }
        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-visual::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: linear-gradient(transparent, rgba(28, 36, 52, 0.4));
            pointer-events: none;
        }

        /* ============ COUNTDOWN ============ */
        .countdown-section {
            background: var(--bg-light);
            padding: 32px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .countdown-wrapper {
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
        }
        .countdown-label {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            white-space: nowrap;
        }
        .countdown-timer {
            display: flex;
            gap: 12px;
            align-items: center;
            flex-wrap: wrap;
        }
        .countdown-timer .cd-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: 10px;
            padding: 10px 18px;
            min-width: 72px;
            box-shadow: var(--shadow-card);
        }
        .countdown-timer .cd-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .countdown-timer .cd-unit {
            font-size: 12px;
            color: var(--text-muted);
        }
        .countdown-timer .cd-sep {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-muted);
        }
        .countdown-note {
            font-size: 14px;
            color: var(--text-secondary);
            flex: 1;
            min-width: 200px;
        }

        /* ============ METRICS ============ */
        .metrics-section {
            background: var(--bg-light);
            padding: 56px 0 72px;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            text-align: center;
        }
        .metric-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(58, 123, 255, 0.3);
        }
        .metric-card .metric-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-lightest);
            border: 1px solid var(--primary-lighter);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            color: var(--primary);
            font-size: 20px;
            font-weight: 700;
        }
        .metric-card .metric-num {
            font-size: 40px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -0.01em;
        }
        .metric-card .metric-unit {
            font-size: 14px;
            color: var(--text-secondary);
            margin-left: 4px;
            font-weight: 500;
        }
        .metric-card .metric-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 8px;
            line-height: 1.6;
        }

        /* ============ BRAND INTRO ============ */
        .brand-intro-section {
            padding: var(--section-gap) 0;
            background: var(--bg-white);
        }
        .brand-intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .brand-intro-text h2 {
            margin-bottom: 20px;
        }
        .brand-intro-text p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 16px;
        }
        .brand-intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 16px 40px rgba(28, 36, 52, 0.08);
            aspect-ratio: 4/3;
            border: 1px solid var(--border-light);
        }
        .brand-intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ============ SERVICES ============ */
        .services-section {
            background: var(--bg-light);
            padding: var(--section-gap) 0;
        }
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(58, 123, 255, 0.35);
        }
        .service-card .service-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-lightest);
            border: 1px solid var(--primary-lighter);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: var(--primary);
            font-size: 22px;
            font-weight: 700;
        }
        .service-card h3 {
            margin-bottom: 10px;
            font-size: 18px;
        }
        .service-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 16px;
        }
        .service-card .service-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition);
        }
        .service-card .service-link:hover {
            color: var(--primary-hover);
            gap: 8px;
        }

        /* ============ COMPARISON ============ */
        .comparison-section {
            background: var(--bg-white);
            padding: var(--section-gap) 0;
        }
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            max-width: 900px;
            margin: 0 auto;
        }
        .comparison-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .comparison-card.featured {
            border-color: var(--primary);
            box-shadow: 0 8px 28px rgba(58, 123, 255, 0.15);
        }
        .comparison-card .comp-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--text-muted);
            background: var(--bg-light);
            padding: 4px 12px;
            border-radius: 14px;
            margin-bottom: 14px;
        }
        .comparison-card.featured .comp-badge {
            background: var(--primary-lightest);
            color: var(--primary);
        }
        .comparison-card h3 {
            margin-bottom: 16px;
            font-size: 20px;
        }
        .comparison-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-light);
            line-height: 1.6;
        }
        .comparison-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .comparison-list li .comp-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 2px;
            font-size: 11px;
            font-weight: 700;
        }
        .comparison-list li .comp-icon.yes {
            background: rgba(46, 139, 87, 0.1);
            color: var(--success);
            border: 1px solid rgba(46, 139, 87, 0.3);
        }
        .comparison-list li .comp-icon.warn {
            background: rgba(201, 168, 106, 0.1);
            color: var(--accent-gold);
            border: 1px solid rgba(201, 168, 106, 0.3);
        }

        /* ============ HIGHLIGHTS ============ */
        .highlights-section {
            background: var(--bg-light);
            padding: var(--section-gap) 0;
        }
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .highlight-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            text-align: center;
        }
        .highlight-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(58, 123, 255, 0.3);
        }
        .highlight-card .hl-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary-lightest);
            border: 1px solid var(--primary-lighter);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
        }
        .highlight-card h3 {
            font-size: 16px;
            margin-bottom: 8px;
        }
        .highlight-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ============ DEEP CONTENT ============ */
        .deep-content-section {
            background: var(--bg-white);
            padding: var(--section-gap) 0;
        }
        .deep-content-grid {
            max-width: 820px;
            margin: 0 auto;
        }
        .deep-content-grid .dc-block {
            margin-bottom: 32px;
        }
        .deep-content-grid .dc-block h3 {
            margin-bottom: 14px;
            font-size: 20px;
        }
        .deep-content-grid .dc-block p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 14px;
        }
        .deep-content-grid .dc-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 12px 32px rgba(28, 36, 52, 0.07);
            margin: 24px 0;
            aspect-ratio: 16/10;
            border: 1px solid var(--border-light);
        }
        .deep-content-grid .dc-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ============ NEWS ============ */
        .news-section {
            background: var(--bg-light);
            padding: var(--section-gap) 0;
        }
        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 28px;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 22px 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .news-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(58, 123, 255, 0.3);
            transform: translateY(-2px);
        }
        .news-date {
            flex-shrink: 0;
            width: 64px;
            text-align: center;
            padding: 10px 6px;
            background: var(--primary-lightest);
            border-radius: 8px;
            border: 1px solid var(--primary-lighter);
        }
        .news-date .date-day {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .news-date .date-month {
            font-size: 12px;
            color: var(--text-muted);
        }
        .news-content {
            flex: 1;
        }
        .news-content h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-dark);
        }
        .news-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .news-content .btn-sm {
            font-size: 12px;
        }
        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-sidebar .sb-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 22px;
            box-shadow: var(--shadow-card);
        }
        .news-sidebar .sb-card h3 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 12px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-lightest);
        }
        .news-sidebar .sb-card ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .news-sidebar .sb-card ul li a {
            font-size: 13px;
            color: var(--text-body);
            display: block;
            padding: 6px 10px;
            border-radius: 6px;
            transition: all var(--transition);
            line-height: 1.5;
        }
        .news-sidebar .sb-card ul li a:hover {
            background: var(--primary-lightest);
            color: var(--primary);
        }
        .news-sidebar .sb-card .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .news-sidebar .sb-card .tag-cloud a {
            font-size: 12px;
            color: var(--text-secondary);
            background: var(--bg-light);
            padding: 4px 12px;
            border-radius: 14px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .news-sidebar .sb-card .tag-cloud a:hover {
            background: var(--primary-lightest);
            color: var(--primary);
            border-color: var(--primary-lighter);
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: var(--bg-white);
            padding: var(--section-gap) 0;
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(58, 123, 255, 0.25);
        }
        .faq-item.active {
            border-left: 3px solid var(--primary);
            box-shadow: var(--shadow-card-hover);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            transition: all var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-arrow {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-light);
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all var(--transition);
            font-size: 13px;
            color: var(--text-secondary);
        }
        .faq-item.active .faq-arrow {
            background: var(--primary-lightest);
            color: var(--primary);
            border-color: var(--primary-lighter);
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
            animation: fadeInUp 0.28s ease;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ============ CTA FORM ============ */
        .cta-form-section {
            background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-lighter) 100%);
            padding: var(--section-gap) 0;
        }
        .cta-form-wrapper {
            max-width: 640px;
            margin: 0 auto;
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            box-shadow: 0 16px 40px rgba(28, 36, 52, 0.06);
        }
        .cta-form-wrapper h2 {
            text-align: center;
            margin-bottom: 12px;
        }
        .cta-form-wrapper .form-desc {
            text-align: center;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            height: 46px;
            padding: 0 16px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-input);
            font-size: 15px;
            color: var(--text-body);
            background: var(--bg-white);
            transition: all var(--transition);
        }
        .form-group textarea {
            height: 110px;
            padding: 12px 16px;
            resize: vertical;
            line-height: 1.6;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-muted);
            font-size: 14px;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.12);
        }
        .form-submit {
            width: 100%;
            height: 48px;
            margin-top: 8px;
            font-size: 17px;
        }
        .form-note {
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 14px;
            line-height: 1.6;
        }
        .form-success {
            display: none;
            text-align: center;
            padding: 24px;
            color: var(--success);
            font-size: 16px;
            font-weight: 600;
        }
        .form-success.show {
            display: block;
            animation: fadeInUp 0.4s ease;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #16203A;
            color: #B9C2D8;
            padding: 56px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: block;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.75;
            color: #B9C2D8;
            margin-bottom: 0;
        }
        .footer-col h3 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: #B9C2D8;
            transition: all var(--transition);
            display: inline-block;
            padding: 2px 0;
        }
        .footer-col ul li a:hover {
            color: #fff;
            transform: translateX(3px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(185, 194, 216, 0.2);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            align-items: center;
            text-align: center;
        }
        .footer-bottom .copyright {
            font-size: 13px;
            color: #B9C2D8;
        }
        .footer-bottom .beian {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
            font-size: 12px;
            color: #8B94A7;
        }
        .footer-bottom .beian a {
            color: #8B94A7;
        }
        .footer-bottom .beian a:hover {
            color: #B9C2D8;
        }
        .footer-links {
            display: flex;
            gap: 16px;
            font-size: 12px;
        }
        .footer-links a {
            color: #B9C2D8;
        }
        .footer-links a:hover {
            color: #fff;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 8px 10px;
                font-size: 14px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .highlights-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .hero .container {
                flex-direction: column;
                text-align: center;
            }
            .hero-visual {
                width: 100%;
                max-width: 420px;
                height: 300px;
                margin: 0 auto;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-points {
                align-items: center;
            }
            .hero-cta {
                justify-content: center;
            }
            .hero-trust {
                justify-content: center;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
                max-width: 560px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-actions .btn {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .hero {
                min-height: 540px;
                padding-top: 80px;
                padding-bottom: 40px;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-content .hero-desc {
                font-size: 15px;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .metric-card .metric-num {
                font-size: 30px;
            }
            .highlights-grid {
                grid-template-columns: 1fr;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .countdown-wrapper {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
            .countdown-timer .cd-item {
                padding: 8px 12px;
                min-width: 56px;
            }
            .countdown-timer .cd-num {
                font-size: 22px;
            }
            .news-item {
                flex-direction: column;
                gap: 12px;
            }
            .news-date {
                width: 100%;
                display: flex;
                align-items: center;
                gap: 8px;
                padding: 8px 12px;
            }
            .news-date .date-day {
                font-size: 18px;
            }
            .brand-intro-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-form-wrapper {
                padding: 28px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom .beian {
                flex-direction: column;
                gap: 4px;
            }
            h2 {
                font-size: 22px;
            }
            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 24px;
            }
            .hero-points li {
                font-size: 13px;
            }
            .btn {
                padding: 0 20px;
                font-size: 14px;
                height: 40px;
            }
            .countdown-timer {
                gap: 6px;
            }
            .countdown-timer .cd-item {
                padding: 6px 8px;
                min-width: 48px;
            }
            .countdown-timer .cd-num {
                font-size: 18px;
            }
            .countdown-timer .cd-sep {
                font-size: 16px;
            }
            .section-header h2 {
                font-size: 20px;
            }
            .section-header .section-desc {
                font-size: 14px;
            }
        }

/* roulang page: category2 */
/* ===== 全站设计系统 ===== */
        :root {
            --primary: #3A7BFF;
            --primary-hover: #1E55D6;
            --primary-light: #5B8DFF;
            --primary-lighter: #DCE8FF;
            --primary-lightest: #EAF1FF;
            --bg-light: #F5F7FB;
            --bg-lighter: #F8FAFD;
            --bg-white: #FFFFFF;
            --text-dark: #1C2434;
            --text-body: #2A3248;
            --text-secondary: #5C657A;
            --text-muted: #8B94A7;
            --border-light: #E1E6F0;
            --border-mid: #D1D9E8;
            --accent-teal: #20A9A0;
            --accent-gold: #C9A86A;
            --error: #C04444;
            --success: #2E8B57;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-card: 16px;
            --radius-lg: 22px;
            --shadow-card: 0 6px 20px rgba(28, 36, 52, 0.05);
            --shadow-card-hover: 0 12px 28px rgba(30, 85, 214, 0.12);
            --shadow-nav: 0 2px 12px rgba(0, 0, 0, 0.04);
            --shadow-nav-scrolled: 0 4px 16px rgba(28, 36, 52, 0.08);
            --container-max: 1200px;
            --section-gap: 96px;
            --section-gap-mobile: 56px;
            --transition: 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-white);
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }
        a:hover {
            color: var(--primary-hover);
        }
        button,
        input,
        textarea,
        select {
            font-family: var(--font-family);
            font-size: 16px;
            outline: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            line-height: 1.35;
            font-weight: 700;
        }
        h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.28;
        }
        h2 {
            font-size: 27px;
            font-weight: 700;
            line-height: 1.35;
        }
        h3 {
            font-size: 19px;
            font-weight: 650;
            line-height: 1.4;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--section-gap) 0;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-lightest);
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 760px;
            line-height: 1.85;
        }
        .section-tag.gold-tag {
            color: #8A6A2F;
            background: #F7EFDF;
        }
        .section-tag.teal-tag {
            color: #147C74;
            background: #E0F2F0;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 46px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(58, 123, 255, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            box-shadow: 0 6px 18px rgba(30, 85, 214, 0.3);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(30, 85, 214, 0.2);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: rgba(58, 123, 255, 0.08);
            border-color: var(--primary-hover);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .btn-glass {
            background: rgba(255, 255, 255, 0.72);
            border: 1px solid rgba(255, 255, 255, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            color: var(--text-dark);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
        }
        .btn-glass:hover {
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }
        .btn-sm {
            height: 36px;
            padding: 0 18px;
            font-size: 14px;
            border-radius: 6px;
        }
        .btn-lg {
            height: 52px;
            padding: 0 36px;
            font-size: 17px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 14px 0;
            transition: all var(--transition);
            background: rgba(255, 255, 255, 0.72);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(225, 230, 240, 0.6);
            box-shadow: var(--shadow-nav);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: var(--shadow-nav-scrolled);
            padding: 10px 0;
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .nav-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text-dark);
            font-weight: 700;
            font-size: 19px;
            white-space: nowrap;
        }
        .nav-logo:hover {
            color: var(--primary-hover);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0;
        }
        .logo-text {
            letter-spacing: 0.02em;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 6px;
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(58, 123, 255, 0.05);
        }
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-lightest);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 8px;
            color: var(--text-body);
            border: 1px solid var(--border-light);
            background: rgba(255, 255, 255, 0.6);
            transition: all var(--transition);
        }
        .search-toggle:hover {
            color: var(--primary);
            border-color: var(--primary-light);
            background: #fff;
        }
        .search-panel {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 8px 24px rgba(28, 36, 52, 0.08);
            display: none;
            z-index: 999;
        }
        .search-panel.open {
            display: block;
        }
        .search-panel input {
            width: 100%;
            max-width: 560px;
            margin: 0 auto;
            display: block;
            padding: 10px 16px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-input);
            font-size: 15px;
            color: var(--text-body);
            background: var(--bg-light);
        }
        .search-panel input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(58, 123, 255, 0.15);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            border: 1px solid var(--border-light);
            background: rgba(255, 255, 255, 0.6);
        }
        .nav-toggle span {
            width: 20px;
            height: 2px;
            background: var(--text-body);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== 移动端导航抽屉 ===== */
        .mobile-nav-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(28, 36, 52, 0.4);
            z-index: 998;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition);
        }
        .mobile-nav-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: #fff;
            z-index: 999;
            padding: 80px 24px 32px;
            box-shadow: -8px 0 32px rgba(28, 36, 52, 0.12);
            transition: right var(--transition);
            overflow-y: auto;
        }
        .mobile-nav.open {
            right: 0;
        }
        .mobile-nav a {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 8px;
            margin-bottom: 4px;
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            background: var(--primary-lightest);
            color: var(--primary);
        }
        .mobile-nav .mobile-cta {
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
        }

        /* ===== 分类页 Hero ===== */
        .category-hero {
            position: relative;
            padding: 160px 0 80px;
            background: linear-gradient(135deg, #F8FAFD 0%, #EAF1FF 55%, #F5F7FB 100%);
            min-height: 580px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(58, 123, 255, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(32, 169, 160, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 440px;
            gap: 56px;
            align-items: center;
        }
        .category-hero-content .hero-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid rgba(58, 123, 255, 0.25);
            padding: 5px 16px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .category-hero-content h1 {
            font-size: 38px;
            margin-bottom: 16px;
            line-height: 1.28;
        }
        .category-hero-content .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.9;
            max-width: 600px;
            margin-bottom: 28px;
        }
        .hero-stats-row {
            display: flex;
            gap: 32px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .hero-stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-item .stat-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .hero-stat-item .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .category-hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-progress-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card-hover);
            padding: 36px 32px;
            width: 100%;
            max-width: 400px;
            border: 1px solid var(--border-light);
            position: relative;
        }
        .progress-ring-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        .progress-ring {
            width: 160px;
            height: 160px;
            position: relative;
        }
        .progress-ring svg {
            transform: rotate(-90deg);
            width: 160px;
            height: 160px;
        }
        .progress-ring .ring-bg {
            fill: none;
            stroke: var(--bg-light);
            stroke-width: 12;
        }
        .progress-ring .ring-fg {
            fill: none;
            stroke: var(--primary);
            stroke-width: 12;
            stroke-linecap: round;
            stroke-dasharray: 339.29;
            stroke-dashoffset: 67.86;
            transition: stroke-dashoffset 1s ease;
        }
        .ring-center {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
        }
        .ring-center .ring-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.1;
        }
        .ring-center .ring-label {
            font-size: 12px;
            color: var(--text-muted);
        }
        .progress-card-title {
            text-align: center;
            font-size: 16px;
            font-weight: 650;
            color: var(--text-dark);
            margin-bottom: 16px;
        }
        .module-preview-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
        }
        .module-preview-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-light);
            border: 1px solid var(--border-light);
            padding: 5px 12px;
            border-radius: 20px;
        }
        .module-preview-tag::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--accent-teal);
            border-radius: 50%;
        }

        /* ===== 功能模块双列图文区 ===== */
        .module-showcase {
            background: #fff;
        }
        .module-grid-duo {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .module-card-duo {
            display: flex;
            gap: 20px;
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: all var(--transition);
            align-items: flex-start;
        }
        .module-card-duo:hover {
            border-color: rgba(58, 123, 255, 0.35);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .module-card-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: var(--primary-lightest);
            color: var(--primary);
            font-size: 20px;
        }
        .module-card-icon.teal {
            background: #E0F2F0;
            color: var(--accent-teal);
        }
        .module-card-icon.gold {
            background: #F7EFDF;
            color: var(--accent-gold);
        }
        .module-card-duo h3 {
            margin-bottom: 6px;
            font-size: 17px;
        }
        .module-card-duo p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ===== 场景矩阵 ===== */
        .scenario-section {
            background: var(--bg-light);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .scenario-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .scenario-card:hover {
            border-color: rgba(58, 123, 255, 0.35);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .scenario-card .scenario-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary-lightest);
            color: var(--primary);
            font-size: 18px;
            margin: 0 auto 12px;
        }
        .scenario-card h4 {
            font-size: 15px;
            font-weight: 650;
            margin-bottom: 6px;
            color: var(--text-dark);
        }
        .scenario-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ===== 深度正文区 ===== */
        .deep-content-section {
            background: #fff;
        }
        .deep-content-grid {
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 48px;
            align-items: start;
        }
        .deep-article h2 {
            margin-bottom: 16px;
            font-size: 24px;
        }
        .deep-article h3 {
            margin: 24px 0 10px;
            font-size: 18px;
        }
        .deep-article p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 14px;
        }
        .deep-article .highlight-text {
            background: var(--primary-lightest);
            border-left: 3px solid var(--primary);
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin: 20px 0;
        }
        .deep-article-img {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-light);
        }
        .deep-article-img img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        /* ===== 流程时间线 ===== */
        .flow-section {
            background: var(--bg-lighter);
        }
        .timeline {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .timeline-item {
            flex: 1;
            min-width: 180px;
            max-width: 220px;
            text-align: center;
            position: relative;
        }
        .timeline-item::after {
            content: '';
            position: absolute;
            top: 24px;
            right: -18px;
            width: 16px;
            height: 2px;
            background: var(--border-mid);
        }
        .timeline-item:last-child::after {
            display: none;
        }
        .timeline-num {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin: 0 auto 10px;
            box-shadow: 0 4px 12px rgba(58, 123, 255, 0.3);
        }
        .timeline-item h4 {
            font-size: 15px;
            font-weight: 650;
            margin-bottom: 4px;
        }
        .timeline-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 12px;
            margin-bottom: 12px;
            transition: all var(--transition);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: rgba(58, 123, 255, 0.3);
        }
        .faq-item.open {
            border-color: rgba(58, 123, 255, 0.4);
            box-shadow: 0 4px 16px rgba(58, 123, 255, 0.08);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            text-align: left;
            cursor: pointer;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            border-left: 3px solid var(--primary);
            margin-left: 20px;
            margin-right: 20px;
            margin-bottom: 16px;
            background: var(--bg-lighter);
            border-radius: 0 8px 8px 0;
        }
        .faq-item.open .faq-answer {
            display: block;
            animation: fadeInAnswer 0.25s ease-in-out;
        }
        @keyframes fadeInAnswer {
            from {
                opacity: 0;
                transform: translateY(-4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== CTA 表单区 ===== */
        .cta-section {
            background: linear-gradient(135deg, #EAF1FF 0%, #F5F7FB 60%, #F8FAFD 100%);
        }
        .cta-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-info h2 {
            margin-bottom: 14px;
        }
        .cta-info p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 12px;
        }
        .cta-info .cta-feature-list {
            margin-top: 16px;
        }
        .cta-info .cta-feature-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-body);
            margin-bottom: 8px;
        }
        .cta-feature-list li::before {
            content: '✓';
            color: var(--success);
            font-weight: 700;
            flex-shrink: 0;
        }
        .cta-form-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            padding: 32px 28px;
            max-width: 520px;
            width: 100%;
        }
        .cta-form-card h3 {
            margin-bottom: 20px;
            font-size: 18px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 550;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-input);
            font-size: 15px;
            color: var(--text-body);
            background: var(--bg-lighter);
            transition: all var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(58, 123, 255, 0.15);
            background: #fff;
        }
        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-muted);
            font-size: 14px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #1C2434;
            color: #B9C2D8;
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-logo:hover {
            color: var(--primary-light);
        }
        .brand-col p {
            font-size: 14px;
            line-height: 1.75;
            color: #9DA8C0;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 650;
            margin-bottom: 14px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            color: #9DA8C0;
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: #fff;
        }
        .footer-bottom {
            padding: 20px 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            text-align: center;
        }
        .copyright {
            font-size: 14px;
            color: #9DA8C0;
        }
        .beian {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
            font-size: 13px;
            color: #7A8698;
        }
        .footer-links {
            font-size: 13px;
            color: #7A8698;
        }
        .footer-links a {
            color: #9DA8C0;
        }
        .footer-links a:hover {
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .category-hero .container {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .category-hero-visual {
                justify-content: flex-start;
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .deep-content-grid {
                grid-template-columns: 1fr;
            }
            .cta-wrapper {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-actions .btn {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            h1 {
                font-size: 28px;
            }
            h2 {
                font-size: 22px;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .category-hero {
                padding: 120px 0 48px;
                min-height: auto;
            }
            .category-hero-content h1 {
                font-size: 28px;
            }
            .hero-stats-row {
                gap: 20px;
            }
            .hero-stat-item .stat-num {
                font-size: 22px;
            }
            .module-grid-duo {
                grid-template-columns: 1fr;
            }
            .module-card-duo {
                flex-direction: column;
                gap: 12px;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .timeline {
                flex-direction: column;
                align-items: center;
            }
            .timeline-item {
                max-width: none;
                min-width: auto;
                width: 100%;
                max-width: 300px;
            }
            .timeline-item::after {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .beian {
                flex-direction: column;
                gap: 4px;
            }
            .cta-form-card {
                padding: 24px 20px;
            }
            .hero-progress-card {
                padding: 24px 20px;
            }
            .progress-ring {
                width: 130px;
                height: 130px;
            }
            .progress-ring svg {
                width: 130px;
                height: 130px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-hero-content h1 {
                font-size: 24px;
            }
            .category-hero-content .hero-desc {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .section-header h2 {
                font-size: 20px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer {
                font-size: 14px;
                margin-left: 16px;
                margin-right: 16px;
                padding: 0 16px 14px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #3A7BFF;
            --primary-hover: #1E55D6;
            --primary-light: #5B8DFF;
            --primary-lighter: #DCE8FF;
            --primary-lightest: #EAF1FF;
            --bg-light: #F5F7FB;
            --bg-lighter: #F8FAFD;
            --bg-white: #FFFFFF;
            --text-dark: #1C2434;
            --text-body: #2A3248;
            --text-secondary: #5C657A;
            --text-muted: #8B94A7;
            --border-light: #E1E6F0;
            --border-mid: #D1D9E8;
            --accent-teal: #20A9A0;
            --accent-gold: #C9A86A;
            --error: #C04444;
            --success: #2E8B57;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-card: 16px;
            --radius-lg: 22px;
            --shadow-card: 0 6px 20px rgba(28, 36, 52, 0.05);
            --shadow-card-hover: 0 12px 28px rgba(30, 85, 214, 0.12);
            --shadow-nav: 0 2px 12px rgba(0, 0, 0, 0.04);
            --shadow-nav-scrolled: 0 4px 16px rgba(28, 36, 52, 0.08);
            --container-max: 1200px;
            --section-gap: 96px;
            --section-gap-mobile: 56px;
            --transition: 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            scroll-padding-top: 80px;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-white);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        a:hover {
            color: var(--primary-hover);
        }

        button,
        input,
        textarea {
            font-family: var(--font-family);
            font-size: 16px;
            outline: none;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-dark);
            line-height: 1.35;
            font-weight: 700;
        }

        ul, ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-gap) 0;
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-lightest);
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }

        .section-header .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
            border: 1px solid transparent;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(58, 123, 255, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            box-shadow: 0 6px 18px rgba(30, 85, 214, 0.3);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(30, 85, 214, 0.2);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: rgba(58, 123, 255, 0.08);
            border-color: var(--primary-hover);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }

        .btn-outline:active {
            transform: translateY(1px);
        }

        .btn-sm {
            height: 36px;
            padding: 0 18px;
            font-size: 14px;
            border-radius: 6px;
        }

        .btn-lg {
            height: 52px;
            padding: 0 36px;
            font-size: 17px;
        }

        /* ============ NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 0;
            transition: all var(--transition);
            background: rgba(255, 255, 255, 0.68);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(225, 230, 240, 0.6);
            box-shadow: var(--shadow-nav);
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: var(--shadow-nav-scrolled);
            padding: 10px 0;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: nowrap;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            color: var(--text-dark);
        }

        .nav-logo:hover {
            color: var(--primary);
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-weight: 700;
            font-size: 18px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.04em;
            color: var(--text-dark);
            white-space: nowrap;
        }

        .nav-logo:hover .logo-text {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-links::-webkit-scrollbar {
            display: none;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
            transition: all var(--transition);
        }

        .nav-links a:hover {
            color: var(--primary);
            background: rgba(58, 123, 255, 0.06);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .nav-links a:hover::after {
            width: 18px;
        }

        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(58, 123, 255, 0.08);
        }

        .nav-links a.active::after {
            width: 18px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .search-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 8px;
            border: 1px solid var(--border-light);
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.7);
            transition: all var(--transition);
        }

        .search-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-lightest);
        }

        .search-panel {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-nav-scrolled);
            transform: translateY(-8px);
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition);
            z-index: -1;
        }

        .search-panel.open {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
            z-index: 999;
        }

        .search-panel input {
            width: 100%;
            max-width: 600px;
            height: 44px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-input);
            padding: 0 16px;
            font-size: 15px;
            color: var(--text-body);
            background: var(--bg-lighter);
            transition: all var(--transition);
        }

        .search-panel input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.12);
            background: #fff;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            border-radius: 6px;
            border: 1px solid var(--border-light);
            background: rgba(255, 255, 255, 0.7);
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Mobile nav */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            z-index: 998;
            padding: 90px 24px 40px;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition);
        }

        .mobile-menu.open {
            opacity: 1;
            visibility: visible;
        }

        .mobile-menu a {
            display: block;
            padding: 14px 16px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 8px;
            transition: all var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--primary-lightest);
            color: var(--primary);
        }

        /* ============ HERO ============ */
        .hero {
            position: relative;
            min-height: 620px;
            padding: 140px 0 80px;
            background: linear-gradient(160deg, #F8FAFD 0%, #EAF1FF 45%, #FFFFFF 100%);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(58, 123, 255, 0.05);
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -140px;
            left: -60px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(32, 169, 160, 0.04);
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .hero-content {
            max-width: 560px;
        }

        .hero-badge-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            border-radius: 20px;
            background: #fff;
            border: 1px solid var(--border-light);
            color: var(--text-secondary);
            box-shadow: 0 2px 6px rgba(28, 36, 52, 0.04);
        }

        .hero-badge .badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
            flex-shrink: 0;
        }

        .hero h1 {
            font-size: 40px;
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }

        .hero h1 .highlight {
            color: var(--primary);
        }

        .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-eligibility {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 20px;
            background: rgba(255, 255, 255, 0.75);
            border: 1px solid var(--border-light);
            border-radius: 12px;
            margin-bottom: 28px;
            backdrop-filter: blur(10px);
        }

        .hero-eligibility .elig-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary-lightest);
            border-radius: 8px;
            flex-shrink: 0;
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
        }

        .hero-eligibility p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        .hero-eligibility strong {
            color: var(--text-dark);
            font-weight: 600;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-visual-inner {
            width: 100%;
            max-width: 500px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(30, 85, 214, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.7);
            position: relative;
        }

        .hero-visual-inner img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .hero-visual-inner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60%;
            background: linear-gradient(to top, rgba(28, 36, 52, 0.3), transparent);
            pointer-events: none;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }

        .hero-visual-float {
            position: absolute;
            bottom: 24px;
            left: 24px;
            right: 24px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            z-index: 3;
        }

        .float-metric {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: 10px;
            padding: 10px 16px;
            flex: 1;
            min-width: 100px;
            border: 1px solid rgba(255, 255, 255, 0.8);
            box-shadow: 0 4px 14px rgba(28, 36, 52, 0.1);
        }

        .float-metric .fm-value {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }

        .float-metric .fm-label {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ============ METRICS ============ */
        .metrics-section {
            background: var(--bg-light);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 12px;
        }

        .metric-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }

        .metric-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(58, 123, 255, 0.25);
        }

        .metric-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--primary-lightest);
            border-radius: 10px;
            margin-bottom: 14px;
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
        }

        .metric-card .metric-value {
            font-size: 38px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .metric-card .metric-value .metric-unit {
            font-size: 18px;
            font-weight: 500;
            color: var(--text-secondary);
            margin-left: 2px;
        }

        .metric-card .metric-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
            margin-bottom: 4px;
        }

        .metric-card .metric-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ============ FEATURES (左文右图) ============ */
        .features-section {
            background: #fff;
        }

        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
            padding: 36px 0;
        }

        .feature-block.reverse {
            direction: rtl;
        }

        .feature-block.reverse > * {
            direction: ltr;
        }

        .feature-text {
            max-width: 520px;
        }

        .feature-text h3 {
            font-size: 24px;
            margin-bottom: 14px;
            color: var(--text-dark);
        }

        .feature-text .feature-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-lightest);
            padding: 3px 10px;
            border-radius: 6px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .feature-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 12px;
        }

        .feature-list {
            margin-top: 12px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.65;
        }

        .feature-list li::before {
            content: '';
            flex-shrink: 0;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            margin-top: 8px;
        }

        .feature-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }

        .feature-image img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .feature-image:hover img {
            transform: scale(1.03);
        }

        /* ============ TIMELINE ============ */
        .timeline-section {
            background: var(--bg-lighter);
        }

        .timeline-wrapper {
            position: relative;
            padding: 20px 0;
        }

        .timeline-wrapper::before {
            content: '';
            position: absolute;
            left: 24px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary-lighter), var(--primary-light), var(--primary-lighter));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding-left: 68px;
            margin-bottom: 36px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: 16px;
            top: 6px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: #fff;
            border: 3px solid var(--primary);
            box-shadow: 0 2px 8px rgba(58, 123, 255, 0.3);
            z-index: 2;
        }

        .timeline-item .timeline-step {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-lightest);
            padding: 3px 12px;
            border-radius: 6px;
            margin-bottom: 8px;
            letter-spacing: 0.05em;
        }

        .timeline-item h3 {
            font-size: 19px;
            margin-bottom: 8px;
        }

        .timeline-item p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
        }

        /* ============ DEEP CONTENT ============ */
        .deep-content-section {
            background: #fff;
        }

        .deep-content-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }

        .deep-content-text h2 {
            font-size: 26px;
            margin-bottom: 16px;
        }

        .deep-content-text h3 {
            font-size: 19px;
            margin: 22px 0 10px;
            color: var(--text-dark);
        }

        .deep-content-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 14px;
        }

        .deep-content-image {
            position: sticky;
            top: 100px;
        }

        .deep-content-image .image-wrap {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }

        .deep-content-image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        .deep-content-image .image-caption {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            padding: 10px;
            background: var(--bg-lighter);
            border-radius: 0 0 var(--radius-card) var(--radius-card);
            border: 1px solid var(--border-light);
            border-top: none;
        }

        /* ============ SCENARIOS ============ */
        .scenarios-section {
            background: var(--bg-light);
        }

        .scenario-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .scenario-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .scenario-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(58, 123, 255, 0.25);
        }

        .scenario-card .scenario-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .scenario-card h3 {
            font-size: 18px;
            margin-bottom: 4px;
        }

        .scenario-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .scenario-card .scenario-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--accent-teal);
            background: rgba(32, 169, 160, 0.08);
            padding: 3px 10px;
            border-radius: 6px;
            align-self: flex-start;
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: #fff;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 14px;
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: 0 2px 8px rgba(28, 36, 52, 0.03);
        }

        .faq-item.open {
            border-color: rgba(58, 123, 255, 0.3);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            transition: all var(--transition);
            user-select: none;
        }

        .faq-question:hover {
            background: var(--bg-lighter);
        }

        .faq-question h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.5;
        }

        .faq-toggle-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-lightest);
            color: var(--primary);
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
            transition: transform var(--transition);
        }

        .faq-item.open .faq-toggle-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-in-out;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            border-left: 3px solid var(--primary);
            margin-left: 22px;
            padding-left: 16px;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(150deg, #EAF1FF 0%, #F5F7FB 55%, #FFFFFF 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            right: -100px;
            transform: translateY(-50%);
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(58, 123, 255, 0.06);
            pointer-events: none;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .cta-info h2 {
            font-size: 28px;
            margin-bottom: 14px;
        }

        .cta-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 10px;
        }

        .cta-info .cta-points {
            margin-top: 16px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .cta-info .cta-points li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
        }

        .cta-info .cta-points li::before {
            content: '✓';
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            background: var(--success);
            color: #fff;
            border-radius: 50%;
            font-size: 11px;
            flex-shrink: 0;
        }

        .cta-form-wrapper {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 36px;
            border: 1px solid var(--border-light);
            box-shadow: 0 16px 40px rgba(28, 36, 52, 0.08);
            max-width: 560px;
            justify-self: end;
            width: 100%;
        }

        .cta-form-wrapper h3 {
            font-size: 20px;
            margin-bottom: 6px;
        }

        .cta-form-wrapper .form-subtitle {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 22px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            height: 44px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-input);
            padding: 0 14px;
            font-size: 15px;
            color: var(--text-body);
            background: var(--bg-lighter);
            transition: all var(--transition);
        }

        .form-group textarea {
            height: 100px;
            padding-top: 10px;
            resize: vertical;
            line-height: 1.6;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.12);
            background: #fff;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-muted);
            font-size: 14px;
        }

        .form-submit-btn {
            width: 100%;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(58, 123, 255, 0.3);
            border: none;
        }

        .form-submit-btn:hover {
            background: var(--primary-hover);
            box-shadow: 0 6px 20px rgba(30, 85, 214, 0.35);
            transform: translateY(-1px);
        }

        .form-submit-btn:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(58, 123, 255, 0.2);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #1C2434;
            color: #B9C2D8;
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }

        .footer-logo:hover {
            color: var(--primary-light);
        }

        .brand-col p {
            font-size: 14px;
            color: #8B94A7;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul a {
            font-size: 14px;
            color: #8B94A7;
            transition: color var(--transition);
        }

        .footer-col ul a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0 28px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            text-align: center;
        }

        .copyright {
            font-size: 13px;
            color: #8B94A7;
        }

        .beian {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            font-size: 13px;
            color: #8B94A7;
        }

        .footer-links {
            font-size: 13px;
            color: #8B94A7;
        }

        .footer-links a {
            color: #8B94A7;
        }

        .footer-links a:hover {
            color: #fff;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero-grid {
                gap: 36px;
            }

            .hero h1 {
                font-size: 34px;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .deep-content-wrapper {
                gap: 32px;
            }

            .cta-grid {
                gap: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-gap-mobile) 0;
            }

            .nav-links {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .mobile-menu {
                display: flex;
            }

            .hero {
                padding: 100px 0 56px;
                min-height: auto;
            }

            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero h1 {
                font-size: 28px;
            }

            .hero-desc {
                font-size: 15px;
            }

            .hero-badge-group {
                gap: 6px;
            }

            .hero-badge {
                font-size: 12px;
                padding: 5px 10px;
            }

            .hero-eligibility {
                padding: 14px 16px;
            }

            .hero-cta-group {
                flex-direction: column;
            }

            .hero-cta-group .btn {
                width: 100%;
            }

            .hero-visual-inner {
                max-width: 100%;
            }

            .hero-visual-float {
                bottom: 12px;
                left: 12px;
                right: 12px;
                gap: 6px;
            }

            .float-metric {
                padding: 8px 10px;
                min-width: 70px;
            }

            .float-metric .fm-value {
                font-size: 16px;
            }

            .float-metric .fm-label {
                font-size: 10px;
            }

            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .metric-card .metric-value {
                font-size: 30px;
            }

            .feature-block,
            .feature-block.reverse {
                grid-template-columns: 1fr;
                gap: 24px;
                direction: ltr;
                padding: 24px 0;
            }

            .feature-text h3 {
                font-size: 20px;
            }

            .timeline-wrapper::before {
                left: 16px;
            }

            .timeline-item {
                padding-left: 48px;
                margin-bottom: 28px;
            }

            .timeline-dot {
                left: 7px;
                width: 14px;
                height: 14px;
                top: 8px;
            }

            .deep-content-wrapper {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .deep-content-image {
                position: static;
            }

            .scenario-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .cta-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .cta-form-wrapper {
                max-width: 100%;
                padding: 24px;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                text-align: left;
            }

            .beian {
                flex-direction: column;
                gap: 4px;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero h1 {
                font-size: 24px;
            }

            .btn-lg {
                height: 46px;
                padding: 0 24px;
                font-size: 15px;
            }

            .logo-text {
                font-size: 17px;
            }

            .nav-container {
                gap: 12px;
            }

            .search-toggle {
                width: 34px;
                height: 34px;
            }

            .hero-badge {
                font-size: 11px;
                padding: 4px 8px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #3A7BFF;
            --primary-hover: #1E55D6;
            --primary-light: #5B8DFF;
            --primary-lighter: #DCE8FF;
            --primary-lightest: #EAF1FF;
            --bg-light: #F5F7FB;
            --bg-lighter: #F8FAFD;
            --bg-white: #FFFFFF;
            --text-dark: #1C2434;
            --text-body: #2A3248;
            --text-secondary: #5C657A;
            --text-muted: #8B94A7;
            --border-light: #E1E6F0;
            --border-mid: #D1D9E8;
            --accent-teal: #20A9A0;
            --accent-gold: #C9A86A;
            --error: #C04444;
            --success: #2E8B57;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-card: 16px;
            --radius-lg: 22px;
            --shadow-card: 0 6px 20px rgba(28, 36, 52, 0.05);
            --shadow-card-hover: 0 12px 28px rgba(30, 85, 214, 0.12);
            --shadow-nav: 0 2px 12px rgba(0, 0, 0, 0.04);
            --shadow-nav-scrolled: 0 4px 16px rgba(28, 36, 52, 0.08);
            --container-max: 1200px;
            --section-gap: 96px;
            --section-gap-mobile: 56px;
            --transition: 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-white);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }
        a:hover {
            color: var(--primary-hover);
        }

        button,
        input,
        textarea {
            font-family: var(--font-family);
            font-size: 16px;
            outline: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-gap) 0;
        }

        .section-header {
            margin-bottom: 44px;
        }
        .section-header .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-lightest);
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
        }
        .section-header h2 {
            margin-bottom: 12px;
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.35;
        }
        .section-header .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }

        h1, h2, h3, h4 {
            color: var(--text-dark);
            line-height: 1.35;
        }

        /* ============ NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 14px 0;
            transition: all var(--transition);
            background: rgba(255, 255, 255, 0.68);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(225, 230, 240, 0.55);
            box-shadow: var(--shadow-nav);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.94);
            box-shadow: var(--shadow-nav-scrolled);
            padding: 10px 0;
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: nowrap;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 700;
        }
        .nav-logo .logo-text {
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-links::-webkit-scrollbar {
            display: none;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            white-space: nowrap;
            padding: 6px 14px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            position: relative;
            transition: all var(--transition);
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(58, 123, 255, 0.05);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .search-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .search-toggle:hover {
            color: var(--primary);
            background: rgba(58, 123, 255, 0.06);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            padding: 8px;
            border-radius: 8px;
            background: transparent;
            transition: all var(--transition);
        }
        .nav-toggle span {
            display: block;
            height: 2px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(58, 123, 255, 0.06);
        }
        .search-panel {
            position: absolute;
            top: calc(100% + 8px);
            right: 24px;
            left: auto;
            width: 360px;
            max-width: calc(100vw - 48px);
            background: #fff;
            border-radius: 12px;
            border: 1px solid var(--border-light);
            box-shadow: 0 12px 32px rgba(28, 36, 52, 0.12);
            padding: 12px;
            display: none;
            z-index: 1001;
        }
        .search-panel.open {
            display: block;
        }
        .search-panel input {
            width: 100%;
            height: 44px;
            border: 1px solid var(--border-light);
            border-radius: 8px;
            padding: 0 16px;
            font-size: 15px;
            color: var(--text-body);
            transition: all var(--transition);
        }
        .search-panel input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.12);
        }

        /* ============ HERO ============ */
        .page-hero {
            padding: 140px 0 80px;
            background: linear-gradient(160deg, #F0F5FF 0%, #FAFCFF 55%, #FFFFFF 100%);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: rgba(58, 123, 255, 0.07);
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(32, 169, 160, 0.05);
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.85);
            border: 1px solid var(--border-light);
            padding: 6px 16px;
            border-radius: 24px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.02em;
            margin-bottom: 20px;
            box-shadow: 0 2px 8px rgba(28, 36, 52, 0.04);
        }
        .hero-content h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .hero-content .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 540px;
            margin-bottom: 28px;
        }
        .hero-cta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .hero-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .hero-meta .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
            display: inline-block;
        }
        .hero-visual {
            position: relative;
        }
        .hero-visual img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-lg);
            box-shadow: 0 16px 48px rgba(28, 36, 52, 0.1);
            object-fit: cover;
            aspect-ratio: 16/10;
        }
        .hero-visual .visual-badge {
            position: absolute;
            bottom: -18px;
            left: -18px;
            background: #fff;
            border-radius: 14px;
            padding: 16px 20px;
            box-shadow: 0 8px 24px rgba(28, 36, 52, 0.1);
            border: 1px solid var(--border-light);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
        }
        .hero-visual .visual-badge span {
            display: block;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
        }

        /* ============ BUTTONS ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(58, 123, 255, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            box-shadow: 0 6px 18px rgba(30, 85, 214, 0.3);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(30, 85, 214, 0.2);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: rgba(58, 123, 255, 0.08);
            border-color: var(--primary-hover);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .btn-sm {
            height: 36px;
            padding: 0 18px;
            font-size: 14px;
            border-radius: 6px;
        }
        .text-link {
            font-size: 14.5px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .text-link:hover {
            color: var(--primary-hover);
            text-decoration: underline;
            text-decoration-color: rgba(30, 85, 214, 0.25);
            text-underline-offset: 3px;
        }

        /* ============ CARDS ============ */
        .card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(58, 123, 255, 0.35);
            transform: translateY(-2px);
        }
        .card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-dark);
        }
        .card p {
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 14px;
        }
        .card .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--primary-lightest);
            margin-bottom: 16px;
            font-size: 20px;
            color: var(--primary);
        }

        /* ============ SERVICE DUAL GRID ============ */
        .service-dual-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .service-dual-card {
            display: flex;
            gap: 20px;
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 26px 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            align-items: flex-start;
        }
        .service-dual-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(58, 123, 255, 0.35);
            transform: translateY(-3px);
        }
        .service-dual-card .card-img {
            flex-shrink: 0;
            width: 120px;
            height: 100px;
            border-radius: 12px;
            overflow: hidden;
            background: var(--bg-light);
        }
        .service-dual-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .service-dual-card .card-body {
            flex: 1;
        }
        .service-dual-card .card-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .service-dual-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
        }

        /* ============ TIMELINE ============ */
        .timeline-block {
            background: var(--bg-light);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
        }
        .timeline {
            position: relative;
            padding-left: 32px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: var(--border-mid);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 36px;
            padding-left: 20px;
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -32px;
            top: 8px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.2);
        }
        .timeline-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .timeline-item p {
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .timeline-item .timeline-step {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-lightest);
            padding: 2px 10px;
            border-radius: 12px;
            margin-bottom: 8px;
            letter-spacing: 0.03em;
        }

        /* ============ DEPTH CONTENT ============ */
        .depth-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }
        .depth-content .depth-text h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-dark);
        }
        .depth-content .depth-text h3 {
            font-size: 19px;
            font-weight: 600;
            margin: 24px 0 12px;
            color: var(--text-dark);
        }
        .depth-content .depth-text p {
            font-size: 15.5px;
            color: var(--text-body);
            line-height: 1.85;
            margin-bottom: 16px;
            text-align: justify;
        }
        .depth-content .depth-img img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card-hover);
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .depth-content .depth-img {
            position: sticky;
            top: 100px;
        }

        /* ============ SCENARIO LIST ============ */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .scenario-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: 12px;
            padding: 20px 18px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            transition: all var(--transition);
        }
        .scenario-item:hover {
            border-color: rgba(58, 123, 255, 0.35);
            box-shadow: var(--shadow-card);
        }
        .scenario-item .scenario-check {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--primary-lightest);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--primary);
            font-weight: 700;
            margin-top: 2px;
        }
        .scenario-item p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* ============ FAQ ============ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 800px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: 14px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item.active {
            border-color: rgba(58, 123, 255, 0.35);
            border-left: 3px solid var(--primary);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: all var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
            background: rgba(58, 123, 255, 0.03);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-lightest);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary);
            transition: transform var(--transition);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-in-out, padding 0.3s ease-in-out;
            padding: 0 22px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ============ CTA FORM ============ */
        .cta-form-section {
            background: linear-gradient(165deg, var(--bg-light) 0%, var(--bg-lighter) 60%, #FFFFFF 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            margin: 0 0 40px;
        }
        .cta-form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-form-info h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-dark);
        }
        .cta-form-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 12px;
            text-align: justify;
        }
        .cta-form-info .cta-highlight {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-lightest);
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            padding: 6px 14px;
            border-radius: 20px;
            margin-top: 8px;
        }
        .form-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-input);
            padding: 12px 14px;
            font-size: 15px;
            color: var(--text-body);
            background: var(--bg-white);
            transition: all var(--transition);
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-muted);
            font-size: 14px;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.12);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }
        .form-submit {
            width: 100%;
            height: 46px;
            border-radius: var(--radius-btn);
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            box-shadow: 0 4px 12px rgba(58, 123, 255, 0.25);
        }
        .form-submit:hover {
            background: var(--primary-hover);
            box-shadow: 0 6px 18px rgba(30, 85, 214, 0.3);
            transform: translateY(-1px);
        }
        .form-submit:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(30, 85, 214, 0.2);
        }
        .form-note {
            font-size: 12.5px;
            color: var(--text-muted);
            text-align: center;
            margin-top: 12px;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #16203A;
            color: #B9C2D8;
            padding: 56px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: #B9C2D8;
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-col p {
            font-size: 14px;
            line-height: 1.7;
            color: #8B94A7;
            max-width: 280px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }
        .copyright {
            font-size: 13px;
            color: #8B94A7;
        }
        .beian {
            display: flex;
            gap: 20px;
            font-size: 12.5px;
            color: #6B7A99;
            flex-wrap: wrap;
            justify-content: center;
        }
        .beian span {
            white-space: nowrap;
        }
        .footer-links {
            font-size: 13px;
            color: #6B7A99;
        }
        .footer-links a {
            color: #B9C2D8;
            font-size: 13px;
        }
        .footer-links a:hover {
            color: #fff;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-visual img {
                aspect-ratio: 16/9;
            }
            .hero-visual .visual-badge {
                bottom: 12px;
                left: 12px;
            }
            .depth-content {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .depth-content .depth-img {
                position: static;
            }
            .cta-form-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 56px;
            }
            .site-header {
                padding: 10px 0;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-nav-scrolled);
                z-index: 1000;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 10px 14px;
                font-size: 16px;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .page-hero {
                padding: 110px 0 56px;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-content .hero-desc {
                font-size: 15px;
            }
            .hero-visual .visual-badge {
                position: static;
                margin-top: 12px;
                display: inline-block;
            }
            .service-dual-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .service-dual-card .card-img {
                width: 80px;
                height: 70px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .timeline-block {
                padding: 28px 20px;
                border-radius: 16px;
            }
            .timeline {
                padding-left: 24px;
            }
            .timeline-item {
                padding-left: 14px;
            }
            .timeline-item::before {
                left: -24px;
                top: 6px;
                width: 12px;
                height: 12px;
            }
            .depth-content .depth-text h2 {
                font-size: 22px;
            }
            .cta-form-section {
                padding: 28px 18px;
                border-radius: 16px;
            }
            .form-card {
                padding: 22px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .beian {
                flex-direction: column;
                align-items: center;
                gap: 6px;
            }
            .btn {
                height: 40px;
                padding: 0 20px;
                font-size: 15px;
            }
            .hero-meta {
                flex-wrap: wrap;
                gap: 10px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-content h1 {
                font-size: 24px;
            }
            .hero-cta {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-cta .btn {
                width: 100%;
            }
            .service-dual-card {
                flex-direction: column;
                gap: 12px;
            }
            .service-dual-card .card-img {
                width: 100%;
                height: 120px;
            }
            .search-panel {
                right: 16px;
                left: 16px;
                width: auto;
            }
            .beian {
                font-size: 11.5px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #3A7BFF;
            --primary-hover: #1E55D6;
            --primary-light: #5B8DFF;
            --primary-lighter: #DCE8FF;
            --primary-lightest: #EAF1FF;
            --bg-light: #F5F7FB;
            --bg-lighter: #F8FAFD;
            --bg-white: #FFFFFF;
            --text-dark: #1C2434;
            --text-body: #2A3248;
            --text-secondary: #5C657A;
            --text-muted: #8B94A7;
            --border-light: #E1E6F0;
            --border-mid: #D1D9E8;
            --accent-teal: #20A9A0;
            --accent-gold: #C9A86A;
            --error: #C04444;
            --success: #2E8B57;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-card: 16px;
            --radius-lg: 22px;
            --shadow-card: 0 6px 20px rgba(28, 36, 52, 0.05);
            --shadow-card-hover: 0 12px 28px rgba(30, 85, 214, 0.12);
            --shadow-nav: 0 2px 12px rgba(0, 0, 0, 0.04);
            --shadow-nav-scrolled: 0 4px 16px rgba(28, 36, 52, 0.08);
            --container-max: 1200px;
            --section-gap: 96px;
            --section-gap-mobile: 56px;
            --transition: 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-white);
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }
        a:hover {
            color: var(--primary-hover);
        }
        button,
        input,
        textarea {
            font-family: var(--font-family);
            font-size: 16px;
            outline: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--section-gap) 0;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-lightest);
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.35;
            margin-bottom: 12px;
        }
        .section-header .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }
        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(58, 123, 255, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            box-shadow: 0 6px 18px rgba(30, 85, 214, 0.3);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(30, 85, 214, 0.2);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: rgba(58, 123, 255, 0.08);
            border-color: var(--primary-hover);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .btn-glass {
            background: rgba(255, 255, 255, 0.72);
            border: 1px solid rgba(255, 255, 255, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            color: var(--text-dark);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
        }
        .btn-glass:hover {
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }
        .btn-sm {
            height: 36px;
            padding: 0 18px;
            font-size: 14px;
            border-radius: 6px;
        }
        /* Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 0;
            transition: all var(--transition);
            background: rgba(255, 255, 255, 0.68);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(209, 217, 232, 0.5);
            box-shadow: var(--shadow-nav);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: var(--shadow-nav-scrolled);
            padding: 10px 0;
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--text-dark);
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 18px;
            font-weight: 700;
        }
        .logo-text {
            color: inherit;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .nav-links a {
            padding: 6px 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: var(--primary-lightest);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            color: var(--text-secondary);
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .search-toggle:hover {
            color: var(--primary);
            background: var(--primary-lightest);
            border-color: var(--primary-lighter);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 36px;
            height: 36px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            border: 1px solid var(--border-light);
            background: var(--bg-white);
        }
        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 1px;
            transition: all var(--transition);
        }
        .search-panel {
            display: none;
            padding: 12px 24px;
            border-top: 1px solid var(--border-light);
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
        }
        .search-panel.open {
            display: block;
        }
        .search-panel input {
            width: 100%;
            padding: 10px 18px;
            border: 1px solid var(--border-mid);
            border-radius: var(--radius-input);
            font-size: 14px;
            color: var(--text-body);
            background: var(--bg-lighter);
        }
        .search-panel input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(58, 123, 255, 0.15);
        }
        /* Hero */
        .page-hero {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            padding-top: 100px;
            padding-bottom: 60px;
            background: linear-gradient(160deg, #EAF1FF 0%, #F8FAFD 45%, #FFFFFF 100%);
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(58, 123, 255, 0.12) 0%, transparent 70%);
            border-radius: 50%;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -15%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(32, 169, 160, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-content h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-dark);
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }
        .hero-content h1 .highlight {
            color: var(--primary);
        }
        .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 560px;
            margin-bottom: 28px;
        }
        .hero-cta {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }
        .hero-trust {
            margin-top: 20px;
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-trust svg {
            color: var(--success);
            flex-shrink: 0;
        }
        .hero-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
            aspect-ratio: 4/3;
            background: var(--bg-lighter);
        }
        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-visual::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: linear-gradient(to top, rgba(28, 36, 52, 0.55), transparent);
        }
        .hero-visual-badge {
            position: absolute;
            bottom: 16px;
            left: 16px;
            right: 16px;
            z-index: 2;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .hero-visual-badge span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-dark);
        }
        .hero-visual-badge span svg {
            color: var(--primary);
        }
        /* Security Stats */
        .security-stats {
            background: var(--bg-light);
            padding: 56px 0;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }
        .stat-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary-lighter);
        }
        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
            line-height: 1.5;
        }
        /* Depth Content */
        .depth-section {
            background: var(--bg-white);
        }
        .depth-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .depth-text h3 {
            font-size: 22px;
            font-weight: 650;
            color: var(--text-dark);
            margin-bottom: 16px;
            line-height: 1.4;
        }
        .depth-text p {
            margin-bottom: 16px;
            color: var(--text-body);
            line-height: 1.85;
        }
        .depth-text p:last-child {
            margin-bottom: 0;
        }
        .depth-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            aspect-ratio: 4/3;
        }
        .depth-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        /* Security Capability Grid */
        .capability-section {
            background: var(--bg-light);
        }
        .capability-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .capability-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .capability-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary-lighter);
        }
        .capability-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: var(--primary-lightest);
            border-radius: 12px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .capability-card h4 {
            font-size: 18px;
            font-weight: 650;
            color: var(--text-dark);
            line-height: 1.4;
        }
        .capability-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .capability-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-teal);
            background: rgba(32, 169, 160, 0.1);
            padding: 2px 10px;
            border-radius: 12px;
            align-self: flex-start;
        }
        /* Timeline */
        .timeline-section {
            background: var(--bg-white);
        }
        .timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .timeline::before {
            content: '';
            position: absolute;
            top: 24px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: var(--primary-lighter);
            z-index: 0;
        }
        .timeline-item {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 0 8px;
        }
        .timeline-dot {
            width: 48px;
            height: 48px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            box-shadow: 0 4px 12px rgba(58, 123, 255, 0.3);
            position: relative;
            z-index: 1;
        }
        .timeline-item h4 {
            font-size: 16px;
            font-weight: 650;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .timeline-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        /* Scenario Section */
        .scenario-section {
            background: var(--bg-light);
        }
        .scenario-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .scenario-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 22px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .scenario-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary-lighter);
        }
        .scenario-item .scenario-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-teal);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .scenario-item h4 {
            font-size: 17px;
            font-weight: 650;
            color: var(--text-dark);
            line-height: 1.4;
        }
        .scenario-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        /* FAQ */
        .faq-section {
            background: var(--bg-white);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-lighter);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 650;
            color: var(--text-dark);
            line-height: 1.5;
            transition: all var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: transform var(--transition);
            font-size: 18px;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-in-out, padding 0.3s ease-in-out;
            padding: 0 24px;
            color: var(--text-secondary);
            line-height: 1.8;
            font-size: 15px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }
        .faq-item.open {
            border-left: 3px solid var(--primary);
        }
        /* CTA Form */
        .cta-section {
            background: linear-gradient(160deg, var(--primary-lightest) 0%, var(--bg-lighter) 50%, var(--bg-white) 100%);
        }
        .cta-wrapper {
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-card);
        }
        .cta-card h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
            text-align: center;
        }
        .cta-card .cta-desc {
            text-align: center;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 28px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-mid);
            border-radius: var(--radius-input);
            font-size: 15px;
            color: var(--text-body);
            background: var(--bg-lighter);
            transition: all var(--transition);
            resize: vertical;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-muted);
            font-size: 14px;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(58, 123, 255, 0.15);
            background: var(--bg-white);
        }
        .form-submit {
            width: 100%;
            height: 48px;
            font-size: 16px;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            letter-spacing: 0.02em;
            box-shadow: 0 4px 12px rgba(58, 123, 255, 0.25);
        }
        .form-submit:hover {
            background: var(--primary-hover);
            box-shadow: 0 6px 18px rgba(30, 85, 214, 0.3);
            transform: translateY(-1px);
        }
        .form-submit:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(30, 85, 214, 0.2);
        }
        .form-note {
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 14px;
        }
        /* Footer */
        .site-footer {
            background: #16203A;
            color: #B9C2D8;
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 650;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col p {
            font-size: 14px;
            line-height: 1.75;
            color: #B9C2D8;
            max-width: 300px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            color: #B9C2D8;
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer-logo:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(185, 194, 216, 0.2);
            padding-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            align-items: center;
            text-align: center;
        }
        .copyright {
            font-size: 14px;
            color: #B9C2D8;
        }
        .beian {
            font-size: 13px;
            color: #8B94A7;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .footer-links {
            font-size: 13px;
            color: #8B94A7;
            display: flex;
            gap: 12px;
        }
        .footer-links a {
            color: #B9C2D8;
            font-size: 13px;
        }
        .footer-links a:hover {
            color: #fff;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-visual {
                max-width: 560px;
            }
            .stats-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .depth-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .timeline {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .timeline::before {
                display: none;
            }
            .scenario-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .site-header {
                padding: 12px 0;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-nav-scrolled);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 10px 12px;
                font-size: 15px;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-actions .btn-primary {
                display: none;
            }
            .page-hero {
                min-height: auto;
                padding-top: 80px;
                padding-bottom: 40px;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 28px;
            }
            .capability-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .timeline {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .scenario-list {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-card {
                padding: 24px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-col.brand-col {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-col.brand-col {
                grid-column: auto;
            }
            .hero-cta {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-cta .btn {
                width: 100%;
            }
            .beian {
                flex-direction: column;
                gap: 4px;
            }
        }

/* roulang page: category5 */
:root {
  --primary: #3A7BFF;
  --primary-hover: #1E55D6;
  --primary-light: #5B8DFF;
  --primary-lighter: #DCE8FF;
  --primary-lightest: #EAF1FF;
  --bg-light: #F5F7FB;
  --bg-lighter: #F8FAFD;
  --bg-white: #FFFFFF;
  --text-dark: #1C2434;
  --text-body: #2A3248;
  --text-secondary: #5C657A;
  --text-muted: #8B94A7;
  --border-light: #E1E6F0;
  --border-mid: #D1D9E8;
  --accent-teal: #20A9A0;
  --accent-gold: #C9A86A;
  --error: #C04444;
  --success: #2E8B57;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  --radius-btn: 8px;
  --radius-input: 8px;
  --radius-card: 16px;
  --radius-lg: 22px;
  --shadow-card: 0 6px 20px rgba(28, 36, 52, 0.05);
  --shadow-card-hover: 0 12px 28px rgba(30, 85, 214, 0.12);
  --shadow-nav: 0 2px 12px rgba(0, 0, 0, 0.04);
  --shadow-nav-scrolled: 0 4px 16px rgba(28, 36, 52, 0.08);
  --container-max: 1200px;
  --section-gap: 96px;
  --section-gap-mobile: 56px;
  --transition: 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-body);
  background: var(--bg-white);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: var(--primary);
  transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

a:hover {
  color: var(--primary-hover);
}

button,
input,
textarea,
select {
  font-family: var(--font-family);
  font-size: 16px;
  outline: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-dark);
  line-height: 1.35;
  font-weight: 700;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-gap) 0;
}

.section-header {
  margin-bottom: 44px;
}

.section-header .section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-lightest);
  padding: 4px 14px;
  border-radius: 20px;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 28px;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.section-header .section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 760px;
  line-height: 1.85;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
}

.btn:focus-visible {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(58, 123, 255, 0.25);
}

.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  box-shadow: 0 6px 18px rgba(30, 85, 214, 0.3);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 2px 6px rgba(30, 85, 214, 0.2);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: rgba(58, 123, 255, 0.08);
  border-color: var(--primary-hover);
  color: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-outline:active {
  transform: translateY(1px);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text-dark);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.9);
  color: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-sm {
  height: 36px;
  padding: 0 18px;
  font-size: 14px;
  border-radius: 6px;
}

/* ============ NAV ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition);
  background: rgba(255, 255, 255, 0.68);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(225, 230, 240, 0.7);
  box-shadow: var(--shadow-nav);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: var(--border-light);
  box-shadow: var(--shadow-nav-scrolled);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-dark);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.nav-logo:hover {
  color: var(--primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
}

.logo-text {
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-body);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 6px;
  position: relative;
  transition: all var(--transition);
}

.nav-links a:hover {
  color: var(--primary);
  background: var(--primary-lightest);
}

.nav-links a.active {
  color: var(--primary);
  background: var(--primary-lightest);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.search-toggle {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-body);
  border: 1px solid var(--border-light);
  background: rgba(255, 255, 255, 0.7);
  transition: all var(--transition);
}

.search-toggle:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-lightest);
}

.search-panel {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-nav-scrolled);
  display: none;
}

.search-panel.open {
  display: block;
}

.search-panel input {
  width: 100%;
  max-width: 520px;
  height: 42px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-input);
  padding: 0 16px;
  font-size: 15px;
  color: var(--text-body);
  background: var(--bg-light);
  transition: all var(--transition);
}

.search-panel input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.15);
  background: #fff;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 6px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--border-light);
  background: rgba(255, 255, 255, 0.7);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 1px;
  transition: all var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============ CATEGORY HERO ============ */
.category-hero {
  padding: 140px 0 80px;
  background: linear-gradient(160deg, var(--bg-lighter) 0%, var(--bg-light) 55%, #fff 100%);
  position: relative;
  overflow: hidden;
}

.category-hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(58, 123, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.category-hero::after {
  content: '';
  position: absolute;
  bottom: -160px;
  left: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(32, 169, 160, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.category-hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.category-hero-content .section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-lightest);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.category-hero-content h1 {
  font-size: 40px;
  margin-bottom: 20px;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.category-hero-content .hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 28px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 16px;
}

.hero-trust .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-teal);
}

.category-hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card-hover);
}

.category-hero-visual img {
  width: 100%;
  height: auto;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.category-hero-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(58, 123, 255, 0.12) 0%, transparent 50%);
  pointer-events: none;
}

/* ============ STATS ============ */
.stats-section {
  background: var(--bg-light);
  padding: 64px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}

.stat-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
  border-color: rgba(58, 123, 255, 0.3);
}

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-lightest);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  font-size: 20px;
}

.stat-number {
  font-size: 38px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 6px;
}

.stat-unit {
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ============ EXPERIENCE DIMENSIONS ============ */
.dimensions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.dimension-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.dimension-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
  border-color: rgba(58, 123, 255, 0.3);
}

.dimension-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--primary-lightest);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 24px;
  flex-shrink: 0;
}

.dimension-card h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.dimension-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  flex: 1;
}

.dimension-card .dimension-link {
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition);
}

.dimension-card .dimension-link:hover {
  color: var(--primary-hover);
  gap: 10px;
}

/* ============ SCENARIOS ============ */
.scenarios-section {
  background: var(--bg-light);
}

.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.scenario-item {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 26px 24px;
  display: flex;
  align-items: flex-start;
  gap: 18px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}

.scenario-item:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(58, 123, 255, 0.3);
  transform: translateY(-2px);
}

.scenario-num {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--primary-lightest);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
  flex-shrink: 0;
}

.scenario-item h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.scenario-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ============ PROCESS TIMELINE ============ */
.process-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.process-step {
  text-align: center;
  padding: 0 12px;
}

.process-step::before {
  content: '';
  position: absolute;
  top: 32px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--border-light);
  z-index: 0;
}

.process-step-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--primary);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
  box-shadow: 0 4px 14px rgba(58, 123, 255, 0.2);
}

.process-step h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============ DEEP CONTENT ============ */
.deep-content {
  background: #fff;
}

.deep-content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.deep-content-text h2 {
  font-size: 26px;
  margin-bottom: 18px;
}

.deep-content-text p {
  font-size: 16px;
  color: var(--text-body);
  line-height: 1.9;
  margin-bottom: 16px;
}

.deep-content-text h3 {
  font-size: 19px;
  margin-bottom: 10px;
  margin-top: 20px;
}

.deep-content-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card-hover);
}

.deep-content-image img {
  width: 100%;
  height: auto;
  aspect-ratio: 4/3;
  object-fit: cover;
}

/* ============ COMPARISON ============ */
.comparison-section {
  background: var(--bg-light);
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.comparison-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
}

.comparison-card.before {
  border-top: 4px solid var(--text-muted);
}

.comparison-card.after {
  border-top: 4px solid var(--primary);
  box-shadow: var(--shadow-card-hover);
}

.comparison-card .comparison-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.comparison-card.before .comparison-label {
  background: #F0F2F7;
  color: var(--text-muted);
}

.comparison-card.after .comparison-label {
  background: var(--primary-lightest);
  color: var(--primary);
}

.comparison-card h3 {
  font-size: 19px;
  margin-bottom: 16px;
}

.comparison-list {
  list-style: none;
  padding: 0;
}

.comparison-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.7;
}

.comparison-list li:last-child {
  border-bottom: none;
}

.comparison-list .check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  margin-top: 3px;
}

.comparison-card.after .check {
  background: var(--success);
  color: #fff;
}

.comparison-card.before .check {
  background: #E8EAF0;
  color: var(--text-muted);
}

/* ============ FAQ ============ */
.faq-section {
  background: #fff;
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: rgba(58, 123, 255, 0.3);
}

.faq-item.active {
  border-left: 3px solid var(--primary);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  transition: all var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--bg-light);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: all var(--transition);
}

.faq-item.active .faq-question .faq-icon {
  background: var(--primary-lightest);
  color: var(--primary);
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-in-out, padding 0.3s ease-in-out;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.85;
}

.faq-item.active .faq-answer {
  max-height: 320px;
  padding: 0 24px 20px;
}

/* ============ CTA ============ */
.cta-section {
  background: linear-gradient(150deg, var(--bg-light) 0%, var(--primary-lightest) 60%, #fff 100%);
  padding: 80px 0;
}

.cta-wrapper {
  max-width: 640px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  box-shadow: var(--shadow-card-hover);
}

.cta-wrapper .section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-lightest);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.cta-wrapper h2 {
  font-size: 26px;
  margin-bottom: 12px;
}

.cta-wrapper .cta-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-input);
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text-body);
  background: var(--bg-light);
  transition: all var(--transition);
}

.form-group input {
  height: 46px;
}

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
  font-size: 14px;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.15);
  background: #fff;
}

.form-submit {
  width: 100%;
  height: 48px;
  margin-top: 8px;
}

/* ============ FOOTER ============ */
.site-footer {
  background: #16203A;
  color: #B9C2D8;
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
}

.footer-col .footer-logo {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  display: inline-block;
  margin-bottom: 14px;
}

.footer-col .footer-logo:hover {
  color: var(--primary-light);
}

.footer-col p {
  font-size: 14px;
  line-height: 1.8;
  color: #9AA5C0;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: #B9C2D8;
  font-size: 14px;
  transition: all var(--transition);
}

.footer-col ul li a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  text-align: center;
}

.footer-bottom .copyright {
  font-size: 14px;
  color: #9AA5C0;
}

.footer-bottom .beian {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: #8B94A7;
}

.footer-bottom .footer-links {
  font-size: 13px;
  color: #8B94A7;
}

.footer-bottom .footer-links a {
  color: #B9C2D8;
  font-size: 13px;
}

.footer-bottom .footer-links a:hover {
  color: var(--primary-light);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .category-hero .container {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .category-hero-visual {
    max-width: 520px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .dimensions-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-flow {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  .process-step::before {
    display: none;
  }
  .deep-content-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 10px 0;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-nav-scrolled);
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    width: 100%;
    padding: 12px 14px;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-actions .btn-primary {
    display: none;
  }
  .category-hero {
    padding: 110px 0 56px;
  }
  .category-hero-content h1 {
    font-size: 30px;
  }
  .section {
    padding: var(--section-gap-mobile) 0;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .stat-number {
    font-size: 28px;
  }
  .dimensions-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .scenarios-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .process-flow {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .comparison-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .cta-wrapper {
    padding: 28px 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom .beian {
    flex-direction: column;
    gap: 4px;
  }
  .section-header h2 {
    font-size: 22px;
  }
}

@media (max-width: 520px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .category-hero-content h1 {
    font-size: 26px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-actions .btn {
    width: 100%;
  }
}

.search-panel {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      background: rgba(255, 255, 255, 0.98);
      padding: 12px 24px;
      border-bottom: 1px solid var(--border-light);
      box-shadow: var(--shadow-nav-scrolled);
      z-index: 999;
    }
    .search-panel.open {
      display: block;
    }
    .search-panel input {
      width: 100%;
      height: 40px;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-input);
      padding: 0 14px;
      font-size: 14px;
      background: #fff;
    }
    .site-header.scrolled {
      background: rgba(255, 255, 255, 0.95);
      box-shadow: var(--shadow-nav-scrolled);
      padding: 10px 0;
    }

/* roulang page: category6 */
:root {
  --primary: #3A7BFF;
  --primary-hover: #1E55D6;
  --primary-light: #5B8DFF;
  --primary-lighter: #DCE8FF;
  --primary-lightest: #EAF1FF;
  --bg-light: #F5F7FB;
  --bg-lighter: #F8FAFD;
  --bg-white: #FFFFFF;
  --text-dark: #1C2434;
  --text-body: #2A3248;
  --text-secondary: #5C657A;
  --text-muted: #8B94A7;
  --border-light: #E1E6F0;
  --border-mid: #D1D9E8;
  --accent-teal: #20A9A0;
  --accent-gold: #C9A86A;
  --error: #C04444;
  --success: #2E8B57;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  --radius-btn: 8px;
  --radius-input: 8px;
  --radius-card: 16px;
  --radius-lg: 22px;
  --shadow-card: 0 6px 20px rgba(28, 36, 52, 0.05);
  --shadow-card-hover: 0 12px 28px rgba(30, 85, 214, 0.12);
  --shadow-nav: 0 2px 12px rgba(0, 0, 0, 0.04);
  --shadow-nav-scrolled: 0 4px 16px rgba(28, 36, 52, 0.08);
  --container-max: 1200px;
  --section-gap: 96px;
  --section-gap-mobile: 56px;
  --transition: 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-body);
  background: var(--bg-white);
  overflow-x: hidden;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  text-decoration: none;
  color: var(--primary);
  transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
a:hover {
  color: var(--primary-hover);
}
button,
input,
textarea {
  font-family: var(--font-family);
  font-size: 16px;
  outline: none;
}
button {
  cursor: pointer;
  border: none;
  background: none;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: var(--section-gap) 0;
}
.section-header {
  margin-bottom: 40px;
}
.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-lightest);
  padding: 4px 14px;
  border-radius: 20px;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}
h1, h2, h3 {
  color: var(--text-dark);
  line-height: 1.3;
  font-weight: 700;
}
h1 {
  font-size: 40px;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.02em;
}
h2 {
  font-size: 28px;
  font-weight: 650;
  margin-bottom: 12px;
}
h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}
p {
  color: var(--text-secondary);
  line-height: 1.8;
}
.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 720px;
  line-height: 1.8;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
  letter-spacing: 0.01em;
}
.btn:focus-visible {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(58, 123, 255, 0.25);
}
.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  box-shadow: 0 6px 18px rgba(30, 85, 214, 0.3);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 2px 6px rgba(30, 85, 214, 0.2);
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: rgba(58, 123, 255, 0.08);
  border-color: var(--primary-hover);
  color: var(--primary-hover);
  transform: translateY(-1px);
}
.btn-outline:active {
  transform: translateY(1px);
}
.btn-sm {
  height: 36px;
  padding: 0 18px;
  font-size: 14px;
  border-radius: 6px;
}
/* ============ NAVIGATION ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 14px 0;
  transition: all var(--transition);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(225, 230, 240, 0.6);
  box-shadow: var(--shadow-nav);
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--border-light);
  box-shadow: var(--shadow-nav-scrolled);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-dark);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.01em;
  flex-shrink: 0;
}
.nav-logo:hover {
  color: var(--text-dark);
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
}
.logo-text {
  white-space: nowrap;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar {
  display: none;
}
.nav-links a {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  white-space: nowrap;
  position: relative;
  transition: all var(--transition);
}
.nav-links a:hover {
  color: var(--primary);
  background: var(--primary-lightest);
}
.nav-links a.active {
  color: var(--primary);
  background: var(--primary-lightest);
  font-weight: 600;
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.search-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-body);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--border-light);
  transition: all var(--transition);
}
.search-toggle:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-lightest);
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 8px;
  border: 1px solid var(--border-light);
  background: rgba(255, 255, 255, 0.7);
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.search-panel {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-nav-scrolled);
  padding: 16px 24px;
  z-index: 999;
}
.search-panel.show {
  display: block;
}
.search-panel input {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  display: block;
  height: 46px;
  padding: 0 20px;
  border-radius: 10px;
  border: 1px solid var(--border-light);
  background: var(--bg-lighter);
  font-size: 15px;
  color: var(--text-body);
}
.search-panel input:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.12);
}
/* ============ MOBILE NAV ============ */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-light);
    padding: 12px 24px 20px;
    box-shadow: var(--shadow-nav-scrolled);
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    width: 100%;
    padding: 12px 8px;
    border-bottom: 1px solid var(--bg-light);
    font-size: 16px;
  }
  .nav-links a:last-child {
    border-bottom: none;
  }
  .nav-actions .btn-sm {
    display: none;
  }
}

/* ============ HERO BENTO ============ */
.hero-bento {
  padding: 140px 0 60px;
  background: linear-gradient(180deg, var(--bg-lighter) 0%, #fff 100%);
  position: relative;
  overflow: hidden;
}
.hero-bento::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(58, 123, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.bento-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  grid-template-rows: auto auto;
  gap: 20px;
  position: relative;
  z-index: 1;
}
.bento-main {
  grid-row: span 2;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.bento-main::after {
  content: '';
  position: absolute;
  bottom: -60px;
  right: -40px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(58, 123, 255, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.bento-main .section-tag {
  align-self: flex-start;
}
.bento-main h1 {
  margin-bottom: 16px;
  font-size: 38px;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.bento-main .hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 28px;
}
.bento-cta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.bento-sub-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 22px 20px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}
.bento-sub-card:hover {
  border-color: rgba(58, 123, 255, 0.3);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.bento-sub-card .sub-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--primary-lightest);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 10px;
}
.bento-sub-card h3 {
  font-size: 16px;
  margin-bottom: 4px;
}
.bento-sub-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}
.bento-cta-bar {
  grid-column: 1 / -1;
  background: var(--primary);
  border-radius: var(--radius-card);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  box-shadow: 0 8px 20px rgba(58, 123, 255, 0.2);
}
.bento-cta-bar p {
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  margin: 0;
}
.bento-cta-bar .btn-glass {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #fff;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.bento-cta-bar .btn-glass:hover {
  background: rgba(255, 255, 255, 0.35);
  color: #fff;
}
@media (max-width: 768px) {
  .hero-bento {
    padding: 120px 0 40px;
  }
  .bento-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }
  .bento-main {
    grid-row: span 1;
    padding: 28px 22px;
  }
  .bento-main h1 {
    font-size: 28px;
  }
  .bento-cta-bar {
    grid-column: 1;
    flex-direction: column;
    text-align: center;
  }
}

/* ============ UX METRICS ============ */
.ux-metrics {
  background: var(--bg-light);
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.metric-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  text-align: center;
}
.metric-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
  border-color: rgba(58, 123, 255, 0.3);
}
.metric-number {
  font-size: 38px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 4px;
}
.metric-label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 4px;
}
.metric-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}
@media (max-width: 768px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .metric-number {
    font-size: 28px;
  }
}
@media (max-width: 520px) {
  .metrics-grid {
    grid-template-columns: 1fr;
  }
}

/* ============ DEEP CONTENT ============ */
.deep-content {
  background: #fff;
}
.deep-content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.deep-content-grid.reverse {
  direction: rtl;
}
.deep-content-grid.reverse > * {
  direction: ltr;
}
.deep-text h2 {
  font-size: 26px;
  margin-bottom: 16px;
}
.deep-text p {
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.85;
}
.deep-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
}
.deep-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4/3;
}
@media (max-width: 768px) {
  .deep-content-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}
@media (max-width: 520px) {
  .deep-content-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* ============ EXPERIENCE DIMENSIONS ============ */
.dimensions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.dimension-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.dimension-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
  border-color: rgba(58, 123, 255, 0.3);
}
.dimension-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--primary-lightest);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 14px;
}
.dimension-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}
.dimension-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.dimension-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.dimension-link:hover {
  color: var(--primary-hover);
  text-decoration: underline;
  text-decoration-color: rgba(58, 123, 255, 0.25);
}
@media (max-width: 768px) {
  .dimensions-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
}
@media (max-width: 520px) {
  .dimensions-grid {
    grid-template-columns: 1fr;
  }
}

/* ============ COMPARISON ============ */
.comparison-wrap {
  display: grid;
  grid-template-columns: 1fr 48px 1fr;
  gap: 16px;
  align-items: stretch;
}
.comparison-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
}
.comparison-card.old {
  background: var(--bg-lighter);
  border-color: var(--border-mid);
}
.comparison-card.new {
  border-color: rgba(58, 123, 255, 0.3);
  box-shadow: 0 8px 24px rgba(30, 85, 214, 0.08);
}
.comparison-card h3 {
  font-size: 16px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.comparison-card.old h3 {
  color: var(--text-muted);
}
.comparison-card.new h3 {
  color: var(--primary);
}
.comparison-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid var(--bg-light);
  font-size: 14px;
  line-height: 1.6;
}
.comparison-item:last-child {
  border-bottom: none;
}
.comparison-item .cmp-icon {
  flex-shrink: 0;
  margin-top: 2px;
  font-weight: 700;
  font-size: 14px;
}
.comparison-card.old .cmp-icon {
  color: var(--text-muted);
}
.comparison-card.new .cmp-icon {
  color: var(--success);
}
.comparison-vs {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-lightest);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  align-self: center;
}
@media (max-width: 768px) {
  .comparison-wrap {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .comparison-vs {
    width: 40px;
    height: 40px;
    justify-self: center;
    border-radius: 50%;
  }
}

/* ============ PROCESS TIMELINE ============ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.process-step {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  box-shadow: var(--shadow-card);
  text-align: center;
  position: relative;
  transition: all var(--transition);
}
.process-step:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.step-number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  margin: 0 auto 12px;
}
.process-step h3 {
  font-size: 16px;
  margin-bottom: 6px;
}
.process-step p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}
@media (max-width: 768px) {
  .process-steps {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
}
@media (max-width: 520px) {
  .process-steps {
    grid-template-columns: 1fr;
  }
}

/* ============ USER FEEDBACK ============ */
.feedback-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feedback-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}
.feedback-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.feedback-quote {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  position: relative;
  padding-left: 16px;
  border-left: 3px solid var(--primary-lighter);
}
.feedback-author {
  display: flex;
  align-items: center;
  gap: 10px;
}
.feedback-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-lightest);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
}
.feedback-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dark);
}
.feedback-role {
  font-size: 12px;
  color: var(--text-muted);
}
@media (max-width: 768px) {
  .feedback-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 520px) {
  .feedback-grid {
    grid-template-columns: 1fr;
  }
}

/* ============ FAQ ============ */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover {
  border-color: rgba(58, 123, 255, 0.25);
}
.faq-item.open {
  border-left: 3px solid var(--primary);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 24px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  transition: all var(--transition);
}
.faq-question:hover {
  color: var(--primary);
}
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-lightest);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: transform var(--transition);
}
.faq-item.open .faq-question .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-in-out, padding 0.3s ease-in-out;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  padding: 0 24px;
}
.faq-item.open .faq-answer {
  max-height: 400px;
  padding-bottom: 20px;
}

/* ============ CTA FORM ============ */
.cta-form-section {
  background: var(--bg-light);
}
.cta-form-wrap {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: start;
}
.cta-info h2 {
  font-size: 26px;
  margin-bottom: 16px;
}
.cta-info p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.8;
}
.cta-info ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.cta-info ul li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.cta-info ul li .check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--success);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  margin-top: 2px;
}
.cta-form-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-input);
  background: var(--bg-lighter);
  font-size: 15px;
  color: var(--text-body);
  transition: all var(--transition);
}
.form-group textarea {
  height: 100px;
  padding: 12px 14px;
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
  font-size: 14px;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.12);
}
.form-submit-btn {
  width: 100%;
  height: 48px;
  font-size: 16px;
}
@media (max-width: 768px) {
  .cta-form-wrap {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* ============ FOOTER ============ */
.site-footer {
  background: #16203A;
  color: #B9C2D8;
  padding: 60px 0 32px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-logo {
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  display: block;
  margin-bottom: 10px;
}
.footer-logo:hover {
  color: var(--primary-light);
}
.brand-col p {
  color: #B9C2D8;
  font-size: 13px;
  line-height: 1.7;
  max-width: 300px;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul li a {
  color: #B9C2D8;
  font-size: 13px;
  transition: all var(--transition);
}
.footer-col ul li a:hover {
  color: var(--primary-light);
}
.footer-bottom {
  border-top: 1px solid rgba(185, 194, 216, 0.2);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}
.copyright {
  font-size: 13px;
  color: #8B94A7;
}
.beian {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: #8B94A7;
}
.footer-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
}
.footer-links a {
  color: #B9C2D8;
}
.footer-links a:hover {
  color: var(--primary-light);
}
@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .brand-col {
    grid-column: 1 / -1;
  }
}
@media (max-width: 520px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .brand-col {
    grid-column: auto;
  }
}

/* roulang page: category7 */
:root {
            --primary: #3A7BFF;
            --primary-hover: #1E55D6;
            --primary-light: #5B8DFF;
            --primary-lighter: #DCE8FF;
            --primary-lightest: #EAF1FF;
            --bg-light: #F5F7FB;
            --bg-lighter: #F8FAFD;
            --bg-white: #FFFFFF;
            --text-dark: #1C2434;
            --text-body: #2A3248;
            --text-secondary: #5C657A;
            --text-muted: #8B94A7;
            --border-light: #E1E6F0;
            --border-mid: #D1D9E8;
            --accent-teal: #20A9A0;
            --accent-gold: #C9A86A;
            --error: #C04444;
            --success: #2E8B57;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-card: 16px;
            --radius-lg: 22px;
            --shadow-card: 0 6px 20px rgba(28, 36, 52, 0.05);
            --shadow-card-hover: 0 12px 28px rgba(30, 85, 214, 0.12);
            --shadow-nav: 0 2px 12px rgba(0, 0, 0, 0.04);
            --shadow-nav-scrolled: 0 4px 16px rgba(28, 36, 52, 0.08);
            --container-max: 1200px;
            --section-gap: 96px;
            --section-gap-mobile: 56px;
            --transition: 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-white);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        a:hover {
            color: var(--primary-hover);
        }

        button,
        input,
        textarea {
            font-family: var(--font-family);
            font-size: 16px;
            outline: none;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-gap) 0;
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-lightest);
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
        }

        .section-header h2 {
            margin-bottom: 12px;
            color: var(--text-dark);
            font-size: 28px;
            font-weight: 700;
            line-height: 1.4;
        }

        .section-header .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }

        /* ============ 按钮 ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(58, 123, 255, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            box-shadow: 0 6px 18px rgba(30, 85, 214, 0.3);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(30, 85, 214, 0.2);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: rgba(58, 123, 255, 0.08);
            border-color: var(--primary-hover);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }

        .btn-outline:active {
            transform: translateY(1px);
        }

        .btn-glass {
            background: rgba(255, 255, 255, 0.72);
            border: 1px solid rgba(255, 255, 255, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            color: var(--text-dark);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
        }

        .btn-glass:hover {
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }

        .btn-sm {
            height: 36px;
            padding: 0 18px;
            font-size: 14px;
            border-radius: 6px;
        }

        .btn-text-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition);
            padding: 4px 0;
            border-bottom: 1px solid transparent;
        }

        .btn-text-link:hover {
            color: var(--primary-hover);
            border-bottom-color: rgba(30, 85, 214, 0.3);
        }

        /* ============ 玻璃导航 ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 0;
            transition: all var(--transition);
            background: rgba(255, 255, 255, 0.68);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(225, 230, 240, 0.6);
            box-shadow: var(--shadow-nav);
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.96);
            box-shadow: var(--shadow-nav-scrolled);
            border-bottom-color: rgba(209, 217, 232, 0.8);
            padding: 10px 0;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            position: relative;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            border-radius: 10px;
            letter-spacing: 0;
            transition: background var(--transition);
        }

        .nav-logo:hover .logo-icon {
            background: var(--primary-hover);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: 0.02em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-links::-webkit-scrollbar {
            display: none;
        }

        .nav-links a {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 6px 12px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 6px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .nav-links a:hover {
            color: var(--primary);
            background: rgba(58, 123, 255, 0.05);
        }

        .nav-links a:hover::after {
            width: 20px;
        }

        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-links a.active::after {
            width: 24px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .search-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            color: var(--text-body);
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .search-toggle:hover {
            background: rgba(58, 123, 255, 0.08);
            color: var(--primary);
            border-color: rgba(58, 123, 255, 0.2);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 38px;
            height: 38px;
            padding: 8px;
            border-radius: 8px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .nav-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .nav-toggle:hover {
            background: var(--primary-lightest);
            border-color: var(--primary-lighter);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .search-panel {
            position: absolute;
            top: calc(100% + 12px);
            right: 0;
            width: 360px;
            max-width: calc(100vw - 32px);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-light);
            border-radius: 12px;
            padding: 8px;
            box-shadow: 0 8px 28px rgba(28, 36, 52, 0.1);
            display: none;
            z-index: 1001;
        }

        .search-panel.open {
            display: block;
        }

        .search-panel input {
            width: 100%;
            height: 40px;
            padding: 0 16px;
            border: 1px solid var(--border-light);
            border-radius: 8px;
            font-size: 14px;
            color: var(--text-body);
            background: var(--bg-white);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-panel input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.12);
        }

        .search-panel input::placeholder {
            color: var(--text-muted);
        }

        /* ============ 移动端导航下拉 ============ */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-nav-scrolled);
            padding: 12px 24px 20px;
            max-height: calc(100vh - 70px);
            overflow-y: auto;
        }

        .mobile-nav.open {
            display: block;
        }

        .mobile-nav a {
            display: block;
            padding: 12px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 8px;
            transition: all var(--transition);
        }

        .mobile-nav a:hover {
            background: var(--primary-lightest);
            color: var(--primary);
        }

        .mobile-nav a.active {
            background: var(--primary-lightest);
            color: var(--primary);
            font-weight: 600;
        }

        .mobile-nav .mobile-cta {
            margin-top: 12px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        /* ============ HERO 大图首屏 ============ */
        .page-hero {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: flex-end;
            padding: 140px 0 80px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(245, 247, 251, 0.92) 0%, rgba(245, 247, 251, 0.65) 45%, rgba(245, 247, 251, 0.35) 100%);
            z-index: 1;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-content {
            max-width: 680px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(255, 255, 255, 0.8);
            padding: 5px 16px;
            border-radius: 20px;
            border: 1px solid rgba(58, 123, 255, 0.2);
            margin-bottom: 18px;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .hero-badge::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.5); }
        }

        .page-hero h1 {
            font-size: 40px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }

        .page-hero .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 30px;
            max-width: 600px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }

        .hero-actions .btn {
            min-width: 120px;
        }

        .hero-trust {
            margin-top: 20px;
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-trust svg {
            color: var(--success);
            flex-shrink: 0;
        }

        /* ============ 横向滚动内容卡 ============ */
        .scroll-cards-section {
            background: var(--bg-light);
            padding: 64px 0;
        }

        .scroll-hint {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }

        .scroll-hint .hint-text {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .scroll-cards-track {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding: 8px 4px 20px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--border-mid) transparent;
        }

        .scroll-cards-track::-webkit-scrollbar {
            height: 6px;
            border-radius: 3px;
        }

        .scroll-cards-track::-webkit-scrollbar-track {
            background: transparent;
        }

        .scroll-cards-track::-webkit-scrollbar-thumb {
            background: var(--border-mid);
            border-radius: 3px;
        }

        .scroll-card-item {
            flex: 0 0 auto;
            width: 320px;
            scroll-snap-align: start;
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .scroll-card-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(58, 123, 255, 0.3);
            transform: translateY(-4px);
        }

        .scroll-card-media {
            width: 100%;
            aspect-ratio: 16/10;
            border-radius: 12px;
            overflow: hidden;
            background: var(--bg-light);
            flex-shrink: 0;
        }

        .scroll-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }

        .scroll-card-item:hover .scroll-card-media img {
            transform: scale(1.05);
        }

        .scroll-card-date {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .scroll-card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.5;
        }

        .scroll-card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex-grow: 1;
        }

        /* ============ 深度正文区域 ============ */
        .deep-content {
            background: var(--bg-white);
        }

        .deep-content-grid {
            display: grid;
            grid-template-columns: 1fr 420px;
            gap: 48px;
            align-items: start;
        }

        .deep-content-text h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 18px;
            line-height: 1.4;
        }

        .deep-content-text h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-dark);
            margin-top: 28px;
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .deep-content-text p {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .deep-content-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            position: sticky;
            top: 90px;
        }

        .deep-content-image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        .deep-highlight-list {
            list-style: none;
            margin: 12px 0 20px;
            padding: 0;
        }

        .deep-highlight-list li {
            position: relative;
            padding-left: 26px;
            margin-bottom: 10px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
        }

        .deep-highlight-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary-lighter);
            border: 2px solid var(--primary);
        }

        /* ============ 数据指标 ============ */
        .stats-mini-section {
            background: var(--bg-light);
            padding: 56px 0;
        }

        .stats-mini-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-mini-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }

        .stat-mini-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(58, 123, 255, 0.25);
        }

        .stat-mini-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-mini-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: var(--bg-white);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: 0 2px 8px rgba(28, 36, 52, 0.03);
        }

        .faq-item:hover {
            border-color: rgba(58, 123, 255, 0.2);
        }

        .faq-item.expanded {
            border-color: rgba(58, 123, 255, 0.35);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            transition: background var(--transition);
            user-select: none;
        }

        .faq-question:hover {
            background: var(--bg-lighter);
        }

        .faq-question h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.5;
            flex-grow: 1;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-lightest);
            color: var(--primary);
            transition: all var(--transition);
            font-size: 16px;
            font-weight: 600;
        }

        .faq-item.expanded .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-in-out, padding 0.3s ease-in-out;
            padding: 0 24px;
        }

        .faq-item.expanded .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding-top: 4px;
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }

        /* ============ CTA表单 ============ */
        .cta-form-section {
            background: var(--bg-light);
            padding: 80px 0;
        }

        .cta-form-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            padding: 40px;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-form-card .form-heading {
            text-align: center;
            margin-bottom: 28px;
        }

        .cta-form-card .form-heading h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .cta-form-card .form-heading p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-input);
            font-size: 15px;
            color: var(--text-body);
            background: var(--bg-white);
            transition: border-color var(--transition), box-shadow var(--transition);
            resize: vertical;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(58, 123, 255, 0.12);
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-muted);
            font-size: 14px;
        }

        .form-group textarea {
            min-height: 100px;
        }

        .form-submit {
            width: 100%;
            height: 48px;
            font-size: 16px;
            font-weight: 600;
            margin-top: 8px;
            transition: all var(--transition);
        }

        .form-submit:hover {
            box-shadow: 0 8px 22px rgba(30, 85, 214, 0.35);
        }

        .form-terms {
            margin-top: 16px;
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: #16203A;
            color: #B9C2D8;
            padding: 56px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(185, 194, 216, 0.15);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            display: inline-block;
            margin-bottom: 12px;
        }

        .footer-logo:hover {
            color: var(--primary-light);
        }

        .footer-col p {
            font-size: 14px;
            color: #9AA5BC;
            line-height: 1.8;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: #B9C2D8;
            transition: color var(--transition);
            display: inline-block;
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            padding: 20px 0 24px;
            text-align: center;
        }

        .copyright {
            font-size: 14px;
            color: #9AA5BC;
            margin-bottom: 8px;
        }

        .beian {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            font-size: 13px;
            color: #8B94A7;
            margin-bottom: 12px;
        }

        .footer-links {
            font-size: 13px;
            color: #9AA5BC;
        }

        .footer-links a {
            color: #B9C2D8;
            font-size: 13px;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .deep-content-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .deep-content-image {
                position: static;
                order: -1;
            }

            .stats-mini-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: var(--section-gap-mobile);
            }

            .nav-links {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-actions .btn-primary {
                display: none;
            }

            .page-hero {
                min-height: 480px;
                padding: 120px 0 60px;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .page-hero .hero-subtitle {
                font-size: 15px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn {
                width: 100%;
                min-width: unset;
            }

            .hero-trust {
                flex-wrap: wrap;
            }

            .scroll-card-item {
                width: 260px;
                padding: 16px;
            }

            .scroll-card-title {
                font-size: 15px;
            }

            .scroll-card-excerpt {
                font-size: 13px;
            }

            .section-header h2 {
                font-size: 22px;
            }

            .deep-content-text h2 {
                font-size: 22px;
            }

            .deep-content-text h3 {
                font-size: 17px;
            }

            .deep-content-text p {
                font-size: 15px;
            }

            .deep-highlight-list li {
                font-size: 14px;
            }

            .faq-question {
                padding: 16px 18px;
            }

            .faq-question h3 {
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 18px;
            }

            .faq-item.expanded .faq-answer {
                padding: 0 18px 16px;
            }

            .cta-form-card {
                padding: 24px 20px;
            }

            .stats-mini-number {
                font-size: 28px;
            }

            .stat-mini-label {
                font-size: 13px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                text-align: left;
            }

            .beian {
                flex-direction: column;
                gap: 4px;
            }

            .search-panel {
                width: 100%;
                right: auto;
                left: 0;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 24px;
            }

            .page-hero .hero-subtitle {
                font-size: 14px;
                line-height: 1.7;
            }

            .page-hero {
                min-height: 440px;
                padding: 110px 0 50px;
            }

            .scroll-card-item {
                width: 220px;
            }

            .stats-mini-grid {
                grid-template-columns: 1fr;
            }

            .cta-form-card .form-heading h2 {
                font-size: 20px;
            }

            .container {
                padding: 0 16px;
            }

            .deep-content-grid {
                gap: 24px;
            }
        }