/* roulang page: index */
:root {
            --primary: #4A7FD4;
            --primary-light: #E8F0FC;
            --primary-border: rgba(74, 127, 212, 0.3);
            --primary-dark: #3D6BB8;
            --primary-darker: #355DA3;
            --accent-gold: #C9A626;
            --accent-gold-dark: #B08D1E;
            --bg-main: #F7F9FC;
            --bg-white: #FFFFFF;
            --bg-cool: #E8EDF3;
            --text-primary: #1A2233;
            --text-secondary: #4A5568;
            --text-tertiary: #8A94A6;
            --border-color: #E2E8F0;
            --shadow-card: 0 2px 12px rgba(26, 34, 51, 0.06);
            --shadow-hover: 0 8px 24px rgba(26, 34, 51, 0.10);
            --shadow-lg: 0 16px 40px rgba(26, 34, 51, 0.12);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-tag: 6px;
            --radius-img: 12px;
            --transition: 200ms ease;
            --font-sans: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --header-h: 72px;
            --fixed-bar-h: 64px;
        }

        * {
            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-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-main);
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 3px solid rgba(74, 127, 212, 0.25);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, #6BA3E8 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.25);
        }

        .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }

        .main-nav a.nav-link {
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a.nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .main-nav a.nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }

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

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

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 8px 14px;
            gap: 8px;
            transition: all var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 127, 212, 0.15);
            background: #fff;
        }

        .search-box svg {
            width: 16px;
            height: 16px;
            color: var(--text-tertiary);
            flex-shrink: 0;
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text-primary);
            width: 120px;
        }

        .search-box input::placeholder {
            color: var(--text-tertiary);
        }

        .btn-header-cta {
            background: var(--primary);
            color: #fff;
            padding: 9px 18px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all var(--transition);
        }

        .btn-header-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(74, 127, 212, 0.3);
        }

        .btn-header-cta:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }

        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background: #fff;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .mobile-menu-toggle svg {
            width: 20px;
            height: 20px;
            color: var(--text-primary);
        }

        .mobile-menu-panel {
            display: none;
            position: absolute;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 8px 24px rgba(26, 34, 51, 0.08);
            padding: 16px 20px;
            flex-direction: column;
            gap: 6px;
            z-index: 99;
        }

        .mobile-menu-panel.open {
            display: flex;
        }

        .mobile-menu-panel a {
            padding: 12px 14px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
        }

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

        /* Breadcrumb */
        .breadcrumb-nav {
            background: var(--bg-main);
            border-bottom: 1px solid var(--border-color);
            padding: 12px 0;
        }

        .breadcrumb-nav .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-tertiary);
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--primary);
        }

        .breadcrumb-nav a:hover {
            text-decoration: underline;
        }

        .breadcrumb-nav .separator {
            color: var(--text-tertiary);
            user-select: none;
        }

        /* Hero - Coupon Wall */
        .hero-coupon {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            padding: 60px 0 80px;
            background-image: linear-gradient(135deg, rgba(26,34,51,0.75) 0%, rgba(74,127,212,0.55) 50%, rgba(26,34,51,0.8) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }

        .hero-coupon::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, rgba(247,249,252,0.98) 0%, transparent 100%);
            pointer-events: none;
        }

        .hero-coupon .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .hero-coupon-content {
            max-width: 640px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            color: #fff;
            margin-bottom: 18px;
            backdrop-filter: blur(8px);
        }

        .hero-badge .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #6BD97B;
            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); }
        }

        .hero-coupon-content h1 {
            font-size: 48px;
            line-height: 1.25;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
            color: #fff;
        }

        .hero-coupon-content h1 .highlight {
            background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            -webkit-text-fill-color: transparent;
        }

        .hero-coupon-desc {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            max-width: 520px;
        }

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

        .btn-primary-lg {
            background: #fff;
            color: var(--primary);
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
        }

        .btn-primary-lg:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
            background: #f0f4ff;
        }

        .btn-ghost-lg {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            padding: 13px 26px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .btn-ghost-lg:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

        .hero-trust-signals {
            display: flex;
            gap: 24px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .hero-trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
        }

        .hero-trust-item .num {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }

        .hero-coupon-wall {
            margin-top: 40px;
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 14px;
            max-width: 720px;
        }

        .coupon-card {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 14px;
            padding: 18px 16px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            text-align: center;
            transition: all var(--transition);
            cursor: pointer;
        }

        .coupon-card:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.35);
            transform: translateY(-4px);
        }

        .coupon-card.main-coupon {
            grid-row: span 2;
            padding: 32px 24px;
            background: rgba(255, 255, 255, 0.18);
            border: 2px solid rgba(255, 215, 0, 0.5);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }

        .coupon-value {
            font-size: 36px;
            font-weight: 800;
            color: #FFD700;
            line-height: 1.2;
        }

        .main-coupon .coupon-value {
            font-size: 56px;
        }

        .coupon-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
            margin-top: 4px;
        }

        .coupon-btn {
            margin-top: 10px;
            background: rgba(255, 255, 255, 0.2);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .coupon-btn:hover {
            background: rgba(255, 255, 255, 0.35);
        }

        /* Section common */
        .section {
            padding: 64px 0;
        }

        .section-header {
            margin-bottom: 36px;
        }

        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

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

        /* Channel selling points */
        .channel-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .channel-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }

        .channel-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .channel-card.wide-card {
            grid-column: span 2;
            flex-direction: row;
            align-items: center;
            gap: 24px;
        }

        .channel-card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            border: 1px solid var(--primary-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
            margin-bottom: 14px;
        }

        .wide-card .channel-card-icon {
            margin-bottom: 0;
            width: 64px;
            height: 64px;
            font-size: 28px;
        }

        .channel-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .channel-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 12px;
        }

        .channel-card .tag-label {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            display: inline-block;
            width: fit-content;
        }

        .channel-card .card-img {
            width: 200px;
            height: 130px;
            object-fit: cover;
            border-radius: var(--radius-img);
            flex-shrink: 0;
        }

        .channel-card.metric-card {
            align-items: center;
            text-align: center;
            justify-content: center;
        }

        .channel-card.metric-card .big-num {
            font-size: 42px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 4px;
        }

        .channel-card.metric-card .unit {
            font-size: 14px;
            color: var(--text-tertiary);
        }

        /* Success data bar */
        .data-bar-section {
            background: var(--text-primary);
            padding: 48px 0;
            color: #fff;
        }

        .data-bar-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .data-bar-item .num {
            font-size: 36px;
            font-weight: 800;
            color: #FFD700;
            line-height: 1.2;
        }

        .data-bar-item .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* Lead form */
        .lead-form-section {
            background: #fff;
        }

        .lead-form-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .lead-form-info h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .lead-form-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .lead-form-card {
            background: var(--bg-main);
            border-radius: var(--radius-card);
            padding: 28px;
            border: 1px solid var(--border-color);
        }

        .lead-form-card .form-group {
            margin-bottom: 16px;
        }

        .lead-form-card label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .lead-form-card input,
        .lead-form-card textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-btn);
            font-size: 14px;
            color: var(--text-primary);
            background: #fff;
            transition: all var(--transition);
        }

        .lead-form-card input:focus,
        .lead-form-card textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 127, 212, 0.15);
            outline: none;
        }

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

        .btn-submit {
            background: var(--primary);
            color: #fff;
            width: 100%;
            padding: 14px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 700;
            transition: all var(--transition);
        }

        .btn-submit:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(74, 127, 212, 0.3);
        }

        /* News center */
        .news-grid {
            display: grid;
            grid-template-columns: 3fr 2fr;
            gap: 20px;
        }

        .news-list-main {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .news-item {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .news-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .news-date {
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-tag);
            padding: 4px 10px;
            font-size: 12px;
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .news-content h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }

        .news-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .news-readmore {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition);
        }

        .news-readmore:hover {
            gap: 8px;
        }

        .news-sidebar {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            align-self: start;
        }

        .news-sidebar h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .news-sidebar ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .news-sidebar li a {
            font-size: 14px;
            color: var(--text-secondary);
            display: block;
            padding: 10px 14px;
            border-radius: 8px;
            transition: all var(--transition);
            border-left: 3px solid transparent;
        }

        .news-sidebar li a:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-left-color: var(--primary);
        }

        /* Platform guarantee */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 16px;
        }

        .guarantee-item {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            text-align: center;
            transition: all var(--transition);
        }

        .guarantee-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .guarantee-item .icon {
            font-size: 28px;
            margin-bottom: 10px;
        }

        .guarantee-item h3 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .guarantee-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Limited-time entry */
        .limited-entry {
            background: linear-gradient(135deg, #1A2233 0%, #2A3F6B 50%, #1A2233 100%);
            color: #fff;
            text-align: center;
            padding: 56px 0;
        }

        .limited-entry .countdown {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin: 24px 0;
        }

        .countdown-item {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            padding: 14px 20px;
            min-width: 70px;
        }

        .countdown-item .time {
            font-size: 28px;
            font-weight: 800;
            color: #FFD700;
            line-height: 1;
        }

        .countdown-item .unit-label {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
        }

        .btn-gold {
            background: var(--accent-gold);
            color: var(--text-primary);
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 700;
            display: inline-block;
            transition: all var(--transition);
        }

        .btn-gold:hover {
            background: var(--accent-gold-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(201, 166, 38, 0.4);
        }

        /* Getting started */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step-counter;
        }

        .step-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }

        .step-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .step-number {
            width: 36px;
            height: 36px;
            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;
        }

        .step-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .step-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Changelog */
        .changelog-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 720px;
        }

        .changelog-item {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: all var(--transition);
        }

        .changelog-item:hover {
            box-shadow: var(--shadow-hover);
        }

        .changelog-version {
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-tag);
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 700;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .changelog-item h3 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 4px;
        }

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

        /* Brand intro */
        .brand-intro-section {
            background: #fff;
        }

        .brand-intro-content {
            max-width: 780px;
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-secondary);
        }

        .brand-intro-content p {
            margin-bottom: 16px;
        }

        /* Privacy notice */
        .privacy-notice {
            background: var(--bg-cool);
            padding: 36px 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .privacy-notice .container {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            font-size: 13px;
            color: var(--text-tertiary);
            line-height: 1.7;
        }

        .privacy-notice svg {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            margin-top: 2px;
            color: var(--primary);
        }

        /* Fixed bottom CTA */
        .fixed-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: var(--fixed-bar-h);
            background: var(--text-primary);
            color: #fff;
            z-index: 90;
            display: flex;
            align-items: center;
            box-shadow: 0 -4px 16px rgba(26, 34, 51, 0.2);
        }

        .fixed-bottom-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
        }

        .fixed-bottom-bar .text {
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
        }

        .fixed-bottom-bar .btn {
            background: var(--accent-gold);
            color: var(--text-primary);
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 700;
            white-space: nowrap;
            transition: all var(--transition);
        }

        .fixed-bottom-bar .btn:hover {
            background: var(--accent-gold-dark);
            transform: translateY(-1px);
        }

        body {
            padding-bottom: var(--fixed-bar-h);
        }

        /* Footer */
        .site-footer {
            background: var(--text-primary);
            color: #A0AAB8;
            padding: 48px 0 32px;
            margin-bottom: var(--fixed-bar-h);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand .logo-text-footer {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-links h3 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 13px;
            color: #A0AAB8;
            transition: color var(--transition);
        }

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

        .footer-legal h3 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-legal .legal-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
        }

        .footer-legal .legal-links a {
            color: #A0AAB8;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: #7A8294;
            line-height: 1.8;
        }

        .footer-bottom .beian {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        .footer-bottom a {
            color: #7A8294;
            transition: color var(--transition);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav {
                display: none;
            }
            .search-box {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .hero-coupon-content h1 {
                font-size: 36px;
            }
            .hero-coupon-wall {
                grid-template-columns: 1fr 1fr;
            }
            .main-coupon {
                grid-column: span 2;
                grid-row: auto;
            }
            .channel-card.wide-card {
                grid-column: span 1;
                flex-direction: column;
                align-items: flex-start;
            }
            .channel-card.wide-card .card-img {
                width: 100%;
                height: auto;
            }
            .data-bar-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .lead-form-wrapper {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 40px 0;
            }
            .hero-coupon {
                min-height: auto;
                padding: 40px 0 60px;
            }
            .hero-coupon-content h1 {
                font-size: 30px;
            }
            .hero-coupon-desc {
                font-size: 14px;
            }
            .hero-coupon-wall {
                grid-template-columns: 1fr;
            }
            .main-coupon {
                grid-column: span 1;
            }
            .coupon-value {
                font-size: 28px;
            }
            .main-coupon .coupon-value {
                font-size: 40px;
            }
            .section-title {
                font-size: 22px;
            }
            .channel-grid {
                grid-template-columns: 1fr;
            }
            .data-bar-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .data-bar-item .num {
                font-size: 26px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .fixed-bottom-bar .text {
                font-size: 12px;
            }
            .fixed-bottom-bar .btn {
                padding: 8px 14px;
                font-size: 12px;
            }
            .btn-primary-lg,
            .btn-ghost-lg {
                width: 100%;
                justify-content: center;
            }
            .hero-coupon-actions {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .hero-coupon-content h1 {
                font-size: 24px;
            }
            .hero-trust-signals {
                gap: 12px;
            }
            .hero-trust-item {
                font-size: 11px;
            }
            .data-bar-grid {
                grid-template-columns: 1fr;
            }
            .changelog-item {
                flex-direction: column;
                gap: 8px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #4A7FD4;
            --primary-light: #E8F0FC;
            --primary-border: rgba(74, 127, 212, 0.3);
            --primary-dark: #3D6BB8;
            --primary-darker: #355DA3;
            --accent-gold: #C9A626;
            --accent-gold-dark: #B08D1E;
            --bg-main: #F7F9FC;
            --bg-white: #FFFFFF;
            --bg-cool: #E8EDF3;
            --text-primary: #1A2233;
            --text-secondary: #4A5568;
            --text-tertiary: #8A94A6;
            --border-color: #E2E8F0;
            --shadow-card: 0 2px 12px rgba(26, 34, 51, 0.06);
            --shadow-hover: 0 8px 24px rgba(26, 34, 51, 0.10);
            --shadow-lg: 0 16px 40px rgba(26, 34, 51, 0.12);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-tag: 6px;
            --radius-img: 12px;
            --transition: 200ms ease;
            --font-sans: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --header-h: 72px;
            --fixed-bar-h: 64px;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-main);
            overflow-x: hidden;
            padding-bottom: var(--fixed-bar-h);
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 3px solid rgba(74, 127, 212, 0.25);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, #6BA3E8 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.25);
        }

        .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }

        .main-nav a.nav-link {
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a.nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .main-nav a.nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }

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

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

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 8px 14px;
            gap: 8px;
            transition: all var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 127, 212, 0.15);
            background: #fff;
        }

        .search-box svg {
            width: 16px;
            height: 16px;
            color: var(--text-tertiary);
            flex-shrink: 0;
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text-primary);
            width: 120px;
        }

        .search-box input::placeholder {
            color: var(--text-tertiary);
        }

        .btn-header-cta {
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-header-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(74, 127, 212, 0.3);
        }

        .btn-header-cta:active {
            background: var(--primary-darker);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            cursor: pointer;
        }

        .mobile-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            padding: 12px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-tertiary);
            list-style: none;
            padding: 0;
            margin: 0;
            flex-wrap: wrap;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }

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

        .breadcrumb li.separator {
            color: var(--text-tertiary);
        }

        .breadcrumb li.current {
            color: var(--primary);
            font-weight: 500;
        }

        /* Page Hero */
        .page-hero {
            background: linear-gradient(135deg, var(--primary) 0%, #6BA3E8 60%, #A8C8F0 100%);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            z-index: 1;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -50%;
            left: 20%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            z-index: 1;
        }

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

        .page-hero h1 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }

        .page-hero p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.9);
            max-width: 600px;
            line-height: 1.7;
            margin: 0;
        }

        /* Filter Tags */
        .filter-section {
            padding: 32px 0 8px;
        }

        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .filter-tag {
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--primary-border);
            color: var(--primary);
            background: var(--primary-light);
        }

        .filter-tag.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.3);
        }

        /* News Grid */
        .news-grid-section {
            padding: 24px 0 48px;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border-color);
        }

        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary-border);
        }

        .news-card-img {
            width: 100%;
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .news-card-img::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 50%;
            background: linear-gradient(to top, rgba(26, 34, 51, 0.4), transparent);
            pointer-events: none;
        }

        .news-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
        }

        .news-date {
            font-size: 12px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            font-weight: 500;
            white-space: nowrap;
        }

        .news-cat-tag {
            font-size: 12px;
            color: var(--text-tertiary);
            background: var(--bg-cool);
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            white-space: nowrap;
        }

        .news-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
            margin: 0 0 8px;
            transition: color var(--transition);
        }

        .news-card:hover .news-card-body h3 {
            color: var(--primary);
        }

        .news-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 14px;
            flex: 1;
        }

        .news-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            transition: all var(--transition);
            align-self: flex-start;
        }

        .news-read-more svg {
            width: 14px;
            height: 14px;
            transition: transform var(--transition);
        }

        .news-read-more:hover {
            color: var(--primary-dark);
        }

        .news-read-more:hover svg {
            transform: translateX(4px);
        }

        /* CTA Section */
        .page-cta {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 40px 48px;
            margin-bottom: 48px;
            box-shadow: var(--shadow-card);
            text-align: center;
        }

        .page-cta h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 10px;
        }

        .page-cta p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 20px;
            line-height: 1.7;
        }

        .page-cta .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent-gold);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
        }

        .page-cta .btn-cta:hover {
            background: var(--accent-gold-dark);
            box-shadow: 0 4px 14px rgba(201, 166, 38, 0.35);
        }

        /* Fixed Bottom CTA Bar */
        .fixed-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: var(--fixed-bar-h);
            background: var(--text-primary);
            display: flex;
            align-items: center;
            z-index: 99;
            padding: 0 20px;
        }

        .fixed-cta .container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            width: 100%;
        }

        .fixed-cta-text {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
        }

        .btn-fixed-cta {
            background: var(--accent-gold);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 9px 22px;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-fixed-cta:hover {
            background: var(--accent-gold-dark);
            box-shadow: 0 4px 12px rgba(201, 166, 38, 0.4);
        }

        /* Footer */
        .site-footer {
            background: #1A2233;
            color: #A0AAB8;
            padding: 40px 0 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 28px;
        }

        .logo-text-footer {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #A0AAB8;
            margin: 0;
        }

        .footer-links h3,
        .footer-legal h3 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 14px;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a,
        .footer-legal a {
            font-size: 14px;
            color: #A0AAB8;
            transition: color var(--transition);
        }

        .footer-links a:hover,
        .footer-legal a:hover {
            color: var(--primary);
        }

        .legal-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
        }

        .footer-bottom p {
            font-size: 12px;
            color: #8A94A6;
            margin: 0 0 6px;
        }

        .beian {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: #8A94A6;
            align-items: center;
        }

        .beian a {
            color: #8A94A6;
            transition: color var(--transition);
        }

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

        /* Mobile Menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 99;
            padding: 20px;
            overflow-y: auto;
            flex-direction: column;
            gap: 12px;
        }

        .mobile-menu.open {
            display: flex;
        }

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

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

        .mobile-menu .search-box {
            margin-bottom: 8px;
            width: 100%;
        }

        .mobile-menu .search-box input {
            width: 100%;
        }

        .mobile-menu .btn-header-cta {
            width: 100%;
            text-align: center;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 2px;
            }
            .main-nav a.nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }
            .search-box input {
                width: 80px;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .search-box {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .page-hero {
                padding: 36px 0 32px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .page-cta {
                padding: 28px 20px;
            }
            .fixed-cta {
                height: 58px;
            }
            :root {
                --fixed-bar-h: 58px;
            }
            .fixed-cta-text {
                font-size: 13px;
            }
            .btn-fixed-cta {
                font-size: 13px;
                padding: 8px 16px;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 22px;
            }
            .page-hero p {
                font-size: 14px;
            }
            .filter-tag {
                font-size: 12px;
                padding: 7px 14px;
            }
            .news-card-img {
                height: 160px;
            }
            .news-card-body {
                padding: 14px 16px 16px;
            }
            .news-card-body h3 {
                font-size: 15px;
            }
            .beian {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .fixed-cta .container {
                gap: 10px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #4A7FD4;
            --primary-light: #E8F0FC;
            --primary-border: rgba(74, 127, 212, 0.3);
            --primary-dark: #3D6BB8;
            --primary-darker: #355DA3;
            --accent-gold: #C9A626;
            --accent-gold-dark: #B08D1E;
            --bg-main: #F7F9FC;
            --bg-white: #FFFFFF;
            --bg-cool: #E8EDF3;
            --text-primary: #1A2233;
            --text-secondary: #4A5568;
            --text-tertiary: #8A94A6;
            --border-color: #E2E8F0;
            --shadow-card: 0 2px 12px rgba(26, 34, 51, 0.06);
            --shadow-hover: 0 8px 24px rgba(26, 34, 51, 0.10);
            --shadow-lg: 0 16px 40px rgba(26, 34, 51, 0.12);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-tag: 6px;
            --radius-img: 12px;
            --transition: 200ms ease;
            --font-sans: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --header-h: 72px;
            --fixed-bar-h: 64px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-main);
            overflow-x: hidden;
            padding-bottom: var(--fixed-bar-h);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
            outline: 3px solid rgba(74, 127, 212, 0.25);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }
        .logo-wrapper {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, #6BA3E8 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.25);
        }
        .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }
        .main-nav a.nav-link {
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a.nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 8px 14px;
            gap: 8px;
            transition: all var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 127, 212, 0.15);
            background: #fff;
        }
        .search-box svg {
            width: 16px;
            height: 16px;
            color: var(--text-tertiary);
            flex-shrink: 0;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text-primary);
            width: 120px;
        }
        .search-box input::placeholder {
            color: var(--text-tertiary);
        }
        .btn-header-cta {
            background: var(--primary);
            color: #fff;
            padding: 9px 18px;
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-header-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(74, 127, 212, 0.3);
        }
        .btn-header-cta:active {
            background: var(--primary-darker);
        }
        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            align-items: center;
            justify-content: center;
            background: var(--bg-cool);
            flex-shrink: 0;
            transition: background var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--primary-light);
        }
        .mobile-toggle svg {
            width: 22px;
            height: 22px;
            color: var(--text-primary);
        }
        /* Breadcrumb */
        .breadcrumb-bar {
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            padding: 12px 0;
            font-size: 13px;
            color: var(--text-tertiary);
        }
        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb-bar a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb-bar a:hover {
            color: var(--primary);
        }
        .breadcrumb-bar .sep {
            color: var(--text-tertiary);
            font-size: 12px;
        }
        .breadcrumb-bar .current {
            color: var(--primary);
            font-weight: 500;
        }
        /* Hero inner */
        .hero-inner {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 480px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-inner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, rgba(26, 34, 51, 0.85) 0%, rgba(40, 60, 90, 0.6) 50%, rgba(26, 34, 51, 0.35) 100%);
            z-index: 1;
        }
        .hero-inner .container {
            position: relative;
            z-index: 2;
            padding-top: 60px;
            padding-bottom: 60px;
        }
        .hero-inner .hero-content {
            max-width: 680px;
        }
        .hero-inner h1 {
            font-size: 40px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .hero-inner .hero-sub {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .hero-inner .hero-badges {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-inner .badge-item {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 999px;
            padding: 8px 18px;
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-inner .badge-item strong {
            font-size: 18px;
            font-weight: 700;
            color: var(--accent-gold);
        }
        /* Main layout */
        .category-main {
            padding: 48px 0 64px;
        }
        .cat-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
            align-items: start;
        }
        /* Story list */
        .story-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .story-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            display: grid;
            grid-template-columns: 280px 1fr;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .story-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .story-card .story-img {
            position: relative;
            min-height: 200px;
            background-size: cover;
            background-position: center;
        }
        .story-card .story-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .story-card .story-body {
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .story-card .story-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .story-card .story-tag {
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            display: inline-block;
        }
        .story-card .story-date {
            color: var(--text-tertiary);
            font-size: 12px;
        }
        .story-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .story-card .story-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            flex: 1;
        }
        .story-card .story-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }
        .story-card .story-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }
        .story-card .story-link .arrow {
            transition: transform var(--transition);
        }
        .story-card .story-link:hover .arrow {
            transform: translateX(4px);
        }
        /* Sidebar */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: calc(var(--header-h) + 20px);
        }
        .sidebar-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 20px;
        }
        .sidebar-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-light);
        }
        .sidebar-card .hot-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .sidebar-card .hot-item:last-child {
            border-bottom: none;
        }
        .sidebar-card .hot-item:hover {
            padding-left: 6px;
        }
        .sidebar-card .hot-item .rank {
            width: 26px;
            height: 26px;
            border-radius: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .sidebar-card .hot-item .rank.top {
            background: var(--accent-gold);
            color: #fff;
        }
        .sidebar-card .hot-item span {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .sidebar-card .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-card .tag-cloud a {
            font-size: 12px;
            padding: 5px 14px;
            border-radius: 999px;
            background: var(--bg-cool);
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .sidebar-card .tag-cloud a:hover {
            background: var(--primary);
            color: #fff;
        }
        /* Section title */
        .section-title h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .section-title p {
            color: var(--text-secondary);
            font-size: 15px;
            max-width: 720px;
        }
        /* FAQ */
        .faq-section {
            padding: 48px 0;
            background: #fff;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 24px;
            max-width: 820px;
        }
        .faq-item {
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            transition: all var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            font-size: 20px;
            color: var(--primary);
            font-weight: 300;
            flex-shrink: 0;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease, padding 300ms ease;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }
        /* CTA */
        .cta-section {
            padding: 56px 0;
            background: linear-gradient(135deg, var(--primary) 0%, #6BA3E8 100%);
            color: #fff;
        }
        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            margin-bottom: 24px;
            max-width: 560px;
        }
        .btn-cta-gold {
            background: var(--accent-gold);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            display: inline-block;
        }
        .btn-cta-gold:hover {
            background: var(--accent-gold-dark);
            box-shadow: 0 6px 18px rgba(201, 166, 38, 0.35);
        }
        .btn-cta-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition);
            display: inline-block;
        }
        .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }
        /* Footer */
        .site-footer {
            background: #1A2233;
            color: #A0AAB8;
            padding: 48px 0 24px;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo-text-footer {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: #A0AAB8;
            max-width: 320px;
        }
        .footer-links h3,
        .footer-legal h3 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links ul li a,
        .footer-legal .legal-links a {
            color: #A0AAB8;
            font-size: 13px;
            transition: color var(--transition);
        }
        .footer-links ul li a:hover,
        .footer-legal .legal-links a:hover {
            color: var(--primary);
        }
        .footer-legal .legal-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            text-align: center;
            font-size: 12px;
        }
        .footer-bottom .beian {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .footer-bottom .beian a {
            color: #A0AAB8;
            transition: color var(--transition);
        }
        .footer-bottom .beian a:hover {
            color: var(--primary);
        }
        /* Fixed bar */
        .fixed-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: var(--fixed-bar-h);
            background: #1A2233;
            z-index: 90;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .fixed-bar .container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .fixed-bar p {
            color: #fff;
            font-size: 14px;
            font-weight: 500;
        }
        .fixed-bar .btn-fixed {
            background: var(--accent-gold);
            color: #fff;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .fixed-bar .btn-fixed:hover {
            background: var(--accent-gold-dark);
            box-shadow: 0 4px 12px rgba(201, 166, 38, 0.4);
        }
        /* Mobile nav drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: #fff;
            z-index: 99;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 20px 40px rgba(26, 34, 51, 0.15);
            padding: 16px 20px 24px;
            max-height: calc(100vh - var(--header-h));
            overflow-y: auto;
        }
        .mobile-drawer.open {
            display: block;
        }
        .mobile-drawer .mobile-nav-links {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-drawer .mobile-nav-links a {
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
        }
        .mobile-drawer .mobile-nav-links a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .mobile-drawer .mobile-nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .mobile-drawer .mobile-search {
            display: flex;
            align-items: center;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 10px 16px;
            gap: 10px;
            margin-bottom: 16px;
        }
        .mobile-drawer .mobile-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            width: 100%;
        }
        .mobile-drawer .btn-mobile-cta {
            background: var(--primary);
            color: #fff;
            padding: 12px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            text-align: center;
            display: block;
            margin-top: 12px;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav a.nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }
            .cat-layout {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .sidebar-card {
                flex: 1;
                min-width: 260px;
            }
            .story-card {
                grid-template-columns: 220px 1fr;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .search-box {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .hero-inner h1 {
                font-size: 30px;
            }
            .hero-inner {
                min-height: 400px;
            }
            .story-card {
                grid-template-columns: 1fr;
            }
            .story-card .story-img {
                min-height: 180px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .fixed-bar .container {
                gap: 10px;
                justify-content: space-between;
            }
            .fixed-bar p {
                font-size: 12px;
                flex: 1;
            }
            .breadcrumb-bar {
                font-size: 12px;
            }
            .section-title h2 {
                font-size: 22px;
            }
            .cta-section h2 {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            .hero-inner h1 {
                font-size: 24px;
            }
            .hero-inner .hero-sub {
                font-size: 14px;
            }
            .hero-inner .hero-badges {
                gap: 8px;
            }
            .hero-inner .badge-item {
                padding: 6px 12px;
                font-size: 11px;
            }
            .hero-inner .badge-item strong {
                font-size: 14px;
            }
            .container {
                padding: 0 16px;
            }
            .category-main {
                padding: 32px 0 48px;
            }
            .story-card .story-body {
                padding: 16px;
            }
            .story-card h3 {
                font-size: 16px;
            }
            .story-card .story-desc {
                font-size: 13px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer {
                font-size: 13px;
            }
            .fixed-bar {
                padding: 0 12px;
                height: auto;
                padding-top: 10px;
                padding-bottom: 10px;
            }
            body {
                padding-bottom: 70px;
            }
            .fixed-bar .btn-fixed {
                padding: 8px 14px;
                font-size: 12px;
                min-height: 44px;
                display: flex;
                align-items: center;
            }
            .footer-bottom .beian {
                gap: 8px;
            }
        }

/* roulang page: category2 */
@layer utilities {
            .bg-primary-brand { background-color: #4A7FD4; }
            .text-primary-brand { color: #4A7FD4; }
            .border-primary-brand { border-color: #4A7FD4; }
            .bg-primary-light-brand { background-color: #E8F0FC; }
            .bg-accent-gold-brand { background-color: #C9A626; }
        }

:root {
            --primary: #4A7FD4;
            --primary-light: #E8F0FC;
            --primary-border: rgba(74, 127, 212, 0.3);
            --primary-dark: #3D6BB8;
            --primary-darker: #355DA3;
            --accent-gold: #C9A626;
            --accent-gold-dark: #B08D1E;
            --bg-main: #F7F9FC;
            --bg-white: #FFFFFF;
            --bg-cool: #E8EDF3;
            --text-primary: #1A2233;
            --text-secondary: #4A5568;
            --text-tertiary: #8A94A6;
            --border-color: #E2E8F0;
            --shadow-card: 0 2px 12px rgba(26, 34, 51, 0.06);
            --shadow-hover: 0 8px 24px rgba(26, 34, 51, 0.10);
            --shadow-lg: 0 16px 40px rgba(26, 34, 51, 0.12);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-tag: 6px;
            --radius-img: 12px;
            --transition: 200ms ease;
            --font-sans: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --header-h: 72px;
            --fixed-bar-h: 64px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-main);
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 3px solid rgba(74, 127, 212, 0.25);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }
        .logo-wrapper {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, #6BA3E8 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.25);
        }
        .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
            flex-wrap: wrap;
            justify-content: center;
        }
        .main-nav a.nav-link {
            padding: 8px 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a.nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 8px 14px;
            gap: 8px;
            transition: all var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 127, 212, 0.15);
            background: #fff;
        }
        .search-box svg {
            width: 16px;
            height: 16px;
            color: var(--text-tertiary);
            flex-shrink: 0;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text-primary);
            width: 120px;
        }
        .search-box input::placeholder {
            color: var(--text-tertiary);
        }
        .btn-header-cta {
            background: var(--primary);
            color: #fff;
            padding: 9px 20px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all var(--transition);
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.3);
        }
        .btn-header-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(74, 127, 212, 0.4);
        }
        .btn-header-cta:active {
            background: var(--primary-darker);
        }
        .hamburger-btn {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 4px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .hamburger-btn span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger-btn:hover {
            background: var(--primary-light);
            border-color: var(--primary-border);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 99;
            padding: 20px;
            overflow-y: auto;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a.nav-link {
            padding: 12px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
        }
        .mobile-menu a.nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .mobile-menu a.nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .breadcrumb-nav {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            padding: 12px 0;
        }
        .breadcrumb-nav ol {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 13px;
            color: var(--text-tertiary);
        }
        .breadcrumb-nav ol li a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb-nav ol li a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav ol li.separator {
            color: var(--text-tertiary);
        }
        .breadcrumb-nav ol li.current {
            color: var(--primary);
            font-weight: 500;
        }
        .hero-section {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: var(--text-primary);
        }
        .hero-section .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            z-index: 0;
        }
        .hero-section .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(26, 34, 51, 0.85) 0%, rgba(74, 127, 212, 0.65) 50%, rgba(26, 34, 51, 0.4) 100%);
            z-index: 1;
        }
        .hero-section .hero-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
            padding: 80px 0;
            color: #fff;
        }
        .hero-section .hero-content h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .hero-section .hero-content p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 28px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            padding: 13px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(74, 127, 212, 0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 18px rgba(74, 127, 212, 0.45);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }
        .btn-secondary {
            background: transparent;
            color: #fff;
            padding: 13px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 2px solid rgba(255, 255, 255, 0.6);
            transition: all var(--transition);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            transform: translateY(-1px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-gold {
            background: var(--accent-gold);
            color: #1A2233;
            padding: 13px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(201, 166, 38, 0.35);
        }
        .btn-gold:hover {
            background: var(--accent-gold-dark);
            box-shadow: 0 6px 18px rgba(201, 166, 38, 0.45);
            transform: translateY(-1px);
        }
        .btn-gold:active {
            transform: translateY(0);
        }
        .section-block {
            padding: 64px 0;
        }
        .section-block.section-tight {
            padding: 48px 0;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 720px;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: var(--primary-light);
            border: 1px solid var(--primary-border);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: var(--primary);
            font-size: 22px;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .feature-card .feature-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
            margin-bottom: 12px;
        }
        .timeline-section {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 48px 40px;
            margin-top: 24px;
        }
        .timeline-steps {
            position: relative;
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }
        .timeline-steps::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: var(--border-color);
            z-index: 0;
        }
        .timeline-step {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 0 8px;
        }
        .timeline-step .step-dot {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 3px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.2);
            transition: all var(--transition);
        }
        .timeline-step:hover .step-dot {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(74, 127, 212, 0.35);
        }
        .timeline-step h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .timeline-step p {
            font-size: 13px;
            color: var(--text-tertiary);
            line-height: 1.6;
        }
        .scenario-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            padding: 24px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: all var(--transition);
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .scenario-card img {
            width: 120px;
            height: 120px;
            object-fit: cover;
            border-radius: var(--radius-img);
            flex-shrink: 0;
        }
        .scenario-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .scenario-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .stats-bar {
            background: var(--text-primary);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 24px;
        }
        .stats-bar .stat-item {
            text-align: center;
        }
        .stats-bar .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .stats-bar .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }
        .faq-section {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 40px 32px;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: 10px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            background: transparent;
            transition: all var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--bg-cool);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .faq-answer {
            padding: 0 20px 16px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #6BA3E8 100%);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 24px;
            line-height: 1.8;
        }
        .site-footer {
            background: var(--text-primary);
            color: #A0AAB8;
            padding: 48px 0 24px;
            margin-top: 48px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1.5fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand .logo-text-footer {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: #8A94A6;
        }
        .site-footer .footer-links h3,
        .site-footer .footer-legal h3 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .site-footer .footer-links ul li a,
        .site-footer .footer-legal .legal-links a {
            font-size: 13px;
            color: #A0AAB8;
            transition: color var(--transition);
        }
        .site-footer .footer-links ul li a:hover,
        .site-footer .footer-legal .legal-links a:hover {
            color: var(--primary);
        }
        .site-footer .footer-legal .legal-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: #8A94A6;
        }
        .site-footer .footer-bottom .beian {
            margin-top: 8px;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .site-footer .footer-bottom a {
            color: #A0AAB8;
            transition: color var(--transition);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--primary);
        }
        .fixed-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: var(--fixed-bar-h);
            background: var(--text-primary);
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            z-index: 90;
            display: flex;
            align-items: center;
            padding: 0 20px;
            box-shadow: 0 -4px 16px rgba(26, 34, 51, 0.15);
        }
        .fixed-cta-bar .fixed-cta-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }
        .fixed-cta-bar .fixed-cta-text {
            font-size: 14px;
            color: #fff;
            font-weight: 500;
        }
        .fixed-cta-bar .fixed-cta-btn {
            background: var(--accent-gold);
            color: #1A2233;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 700;
            white-space: nowrap;
            transition: all var(--transition);
        }
        .fixed-cta-bar .fixed-cta-btn:hover {
            background: var(--accent-gold-dark);
        }
        body.has-fixed-bar {
            padding-bottom: var(--fixed-bar-h);
        }
        .site-footer {
            padding-bottom: calc(24px + var(--fixed-bar-h));
        }
        @media (max-width: 1024px) {
            .main-nav a.nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline-steps {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .timeline-steps::before {
                display: none;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
            .header-actions .search-box {
                display: none;
            }
            .hero-section .hero-content h1 {
                font-size: 28px;
            }
            .hero-section .hero-content p {
                font-size: 15px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .timeline-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .fixed-cta-bar {
                height: 56px;
                padding: 0 12px;
            }
            .fixed-cta-bar .fixed-cta-text {
                font-size: 12px;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
            }
            .fixed-cta-bar .fixed-cta-btn {
                font-size: 12px;
                padding: 8px 14px;
                white-space: nowrap;
            }
            .section-block {
                padding: 40px 0;
            }
            .section-title {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            .timeline-steps {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                grid-template-columns: 1fr;
            }
            .hero-section {
                min-height: 380px;
            }
            .hero-section .hero-content {
                padding: 48px 0;
            }
            .hero-section .hero-content h1 {
                font-size: 24px;
            }
            .btn-primary,
            .btn-secondary,
            .btn-gold {
                padding: 10px 20px;
                font-size: 14px;
            }
        }

.hamburger-btn {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: transparent;
            border: none;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            padding: 16px 20px;
            flex-direction: column;
            gap: 4px;
            z-index: 99;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a.nav-link {
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
        }
        .mobile-menu a.nav-link:hover,
        .mobile-menu a.nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .lead-form input,
        .lead-form textarea {
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .lead-form input:focus,
        .lead-form textarea:focus {
            border-color: var(--primary) !important;
            box-shadow: 0 0 0 3px rgba(74, 127, 212, 0.15) !important;
        }
        @media (min-width: 769px) {
            .hamburger-btn {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }
        @media (max-width: 768px) {
            .hamburger-btn {
                display: flex;
            }
            .main-nav {
                display: none;
            }
            .header-actions .search-box {
                display: none;
            }
            .btn-header-cta {
                display: none;
            }
            .scenario-card {
                flex-direction: column;
                align-items: flex-start;
            }
            .scenario-card img {
                width: 100%;
                height: 180px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #4A7FD4;
            --primary-light: #E8F0FC;
            --primary-border: rgba(74, 127, 212, 0.3);
            --primary-dark: #3D6BB8;
            --primary-darker: #355DA3;
            --accent-gold: #C9A626;
            --accent-gold-dark: #B08D1E;
            --bg-main: #F7F9FC;
            --bg-white: #FFFFFF;
            --bg-cool: #E8EDF3;
            --text-primary: #1A2233;
            --text-secondary: #4A5568;
            --text-tertiary: #8A94A6;
            --border-color: #E2E8F0;
            --shadow-card: 0 2px 12px rgba(26, 34, 51, 0.06);
            --shadow-hover: 0 8px 24px rgba(26, 34, 51, 0.10);
            --shadow-lg: 0 16px 40px rgba(26, 34, 51, 0.12);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-tag: 6px;
            --radius-img: 12px;
            --transition: 200ms ease;
            --font-sans: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --header-h: 72px;
            --fixed-bar-h: 64px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-main);
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 3px solid rgba(74, 127, 212, 0.25);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }
        .logo-wrapper {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, #6BA3E8 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.25);
        }
        .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }
        .main-nav a.nav-link {
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a.nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 8px 14px;
            gap: 8px;
            transition: all var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 127, 212, 0.15);
            background: #fff;
        }
        .search-box svg {
            width: 16px;
            height: 16px;
            color: var(--text-tertiary);
            flex-shrink: 0;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text-primary);
            width: 100px;
        }
        .search-box input::placeholder {
            color: var(--text-tertiary);
        }
        .btn-header-cta {
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 9px 20px;
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
            box-shadow: 0 2px 6px rgba(74, 127, 212, 0.3);
        }
        .btn-header-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(74, 127, 212, 0.4);
        }
        .btn-header-cta:active {
            background: var(--primary-darker);
            transform: translateY(1px);
        }
        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--text-primary);
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .mobile-toggle:hover {
            background: var(--primary-light);
            border-color: var(--primary-border);
        }
        /* Breadcrumb */
        .breadcrumb {
            padding: 20px 0 0;
            font-size: 13px;
            color: var(--text-tertiary);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-tertiary);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--border-color);
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 500;
        }
        /* Hero */
        .page-hero {
            position: relative;
            margin-top: 20px;
            border-radius: var(--radius-card);
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(26, 34, 51, 0.82) 0%, rgba(74, 127, 212, 0.72) 100%), url('/assets/images/coverpic/cover-7.webp') center/cover no-repeat;
            box-shadow: var(--shadow-lg);
        }
        .page-hero-content {
            padding: 40px 48px;
            max-width: 680px;
            color: #fff;
        }
        .page-hero-content h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .page-hero-content p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 20px;
        }
        .hero-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .hero-tag {
            background: rgba(255, 255, 255, 0.16);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-pill);
            padding: 5px 16px;
            font-size: 13px;
            color: #fff;
        }
        /* Section common */
        .section {
            padding: 48px 0;
        }
        .section-header {
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: 0.3px;
            color: var(--text-primary);
            line-height: 1.35;
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.75;
        }
        /* Deep article */
        .deep-article {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 40px 44px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }
        .deep-article h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            line-height: 1.4;
        }
        .deep-article h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 28px 0 12px;
            line-height: 1.4;
        }
        .deep-article p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 16px;
            text-align: justify;
        }
        .deep-article .highlight-num {
            color: var(--primary);
            font-weight: 700;
        }
        /* Summary list */
        .summary-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .summary-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .summary-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-border);
        }
        .summary-card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--primary-light);
            border: 1px solid var(--primary-border);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 22px;
            color: var(--primary);
            font-weight: 700;
        }
        .summary-card-content h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .summary-card-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .summary-card-meta {
            display: flex;
            gap: 14px;
            font-size: 12px;
            color: var(--text-tertiary);
            flex-wrap: wrap;
        }
        .summary-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        /* Data strip */
        .data-strip {
            background: linear-gradient(135deg, var(--primary) 0%, #6BA3E8 100%);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            box-shadow: var(--shadow-lg);
        }
        .data-item {
            text-align: center;
            color: #fff;
        }
        .data-item .data-num {
            font-size: 34px;
            font-weight: 700;
            letter-spacing: 0.5px;
            line-height: 1.2;
        }
        .data-item .data-unit {
            font-size: 15px;
            opacity: 0.85;
            margin-left: 3px;
        }
        .data-item .data-label {
            font-size: 13px;
            opacity: 0.85;
            margin-top: 6px;
        }
        /* CTA section */
        .cta-panel {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 44px 48px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }
        .cta-panel h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .cta-panel p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 24px;
            line-height: 1.75;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(74, 127, 212, 0.4);
        }
        .btn-primary:active {
            background: var(--primary-darker);
            transform: translateY(1px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-white);
            color: var(--primary);
            border: 1px solid var(--primary-border);
            border-radius: var(--radius-btn);
            padding: 11px 26px;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            border-color: var(--primary);
        }
        /* Footer */
        .site-footer {
            background: #1A2233;
            color: #A0AAB8;
            margin-top: 60px;
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.4fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            margin-top: 14px;
            max-width: 340px;
        }
        .logo-text-footer {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
        }
        .footer-links h3,
        .footer-legal h3 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a,
        .footer-legal a {
            font-size: 13px;
            color: #A0AAB8;
            transition: color var(--transition);
        }
        .footer-links a:hover,
        .footer-legal a:hover {
            color: var(--primary);
        }
        .legal-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 22px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            align-items: center;
            text-align: center;
            font-size: 12px;
            color: #8A94A6;
        }
        .footer-bottom .beian {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .footer-bottom a {
            color: #8A94A6;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        /* Mobile menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-lg);
            z-index: 99;
            padding: 16px 20px 20px;
            flex-direction: column;
            gap: 6px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a.nav-link {
            display: block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            border-radius: 8px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .mobile-menu a.nav-link:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-menu a.nav-link.active {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-menu .search-box {
            margin: 8px 0;
            width: 100%;
        }
        .mobile-menu .search-box input {
            width: 100%;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 0;
            }
            .main-nav a.nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }
            .search-box input {
                width: 70px;
            }
            .data-strip {
                grid-template-columns: repeat(4, 1fr);
                gap: 16px;
                padding: 28px 24px;
            }
            .data-item .data-num {
                font-size: 26px;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .header-actions .search-box {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .btn-header-cta {
                display: none;
            }
            .page-hero {
                min-height: 300px;
            }
            .page-hero-content {
                padding: 28px 32px;
            }
            .page-hero-content h1 {
                font-size: 26px;
            }
            .page-hero-content p {
                font-size: 14px;
            }
            .deep-article {
                padding: 28px 24px;
            }
            .summary-card {
                flex-direction: column;
                padding: 20px 22px;
                gap: 14px;
            }
            .summary-card-icon {
                width: 44px;
                height: 44px;
                font-size: 18px;
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
                padding: 24px 20px;
            }
            .data-item .data-num {
                font-size: 28px;
            }
            .cta-panel {
                padding: 32px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .section {
                padding: 36px 0;
            }
        }
        @media (max-width: 520px) {
            .page-hero-content {
                padding: 22px 20px;
            }
            .page-hero-content h1 {
                font-size: 22px;
            }
            .page-hero {
                min-height: 260px;
            }
            .hero-tag {
                font-size: 11px;
                padding: 4px 10px;
            }
            .deep-article {
                padding: 22px 18px;
            }
            .deep-article h2 {
                font-size: 20px;
            }
            .deep-article h3 {
                font-size: 17px;
            }
            .deep-article p {
                font-size: 15px;
            }
            .data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
                padding: 18px 14px;
            }
            .data-item .data-num {
                font-size: 22px;
            }
            .cta-panel h2 {
                font-size: 21px;
            }
            .section-header h2 {
                font-size: 22px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #4A7FD4;
            --primary-light: #E8F0FC;
            --primary-border: rgba(74, 127, 212, 0.3);
            --primary-dark: #3D6BB8;
            --primary-darker: #355DA3;
            --accent-gold: #C9A626;
            --accent-gold-dark: #B08D1E;
            --bg-main: #F7F9FC;
            --bg-white: #FFFFFF;
            --bg-cool: #E8EDF3;
            --text-primary: #1A2233;
            --text-secondary: #4A5568;
            --text-tertiary: #8A94A6;
            --border-color: #E2E8F0;
            --shadow-card: 0 2px 12px rgba(26, 34, 51, 0.06);
            --shadow-hover: 0 8px 24px rgba(26, 34, 51, 0.10);
            --shadow-lg: 0 16px 40px rgba(26, 34, 51, 0.12);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-tag: 6px;
            --radius-img: 12px;
            --transition: 200ms ease;
            --font-sans: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --header-h: 72px;
            --fixed-bar-h: 64px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-main);
            overflow-x: hidden;
            padding-bottom: var(--fixed-bar-h);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 3px solid rgba(74, 127, 212, 0.25);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }
        .logo-wrapper {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, #6BA3E8 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.25);
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }
        .main-nav a.nav-link {
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a.nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 8px 14px;
            gap: 8px;
            transition: all var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 127, 212, 0.15);
            background: #fff;
        }
        .search-box svg {
            width: 16px;
            height: 16px;
            color: var(--text-tertiary);
            flex-shrink: 0;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text-primary);
            width: 120px;
        }
        .search-box input::placeholder {
            color: var(--text-tertiary);
        }
        .btn-header-cta {
            background: var(--primary);
            color: #fff;
            padding: 9px 18px;
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.2);
        }
        .btn-header-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(74, 127, 212, 0.3);
            transform: translateY(-1px);
        }
        .btn-header-cta:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }
        .mobile-menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            border: 1px solid var(--border-color);
            background: #fff;
            transition: all var(--transition);
        }
        .mobile-menu-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .mobile-menu-btn svg {
            width: 20px;
            height: 20px;
        }
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 99;
            background: #fff;
            padding: 20px;
            overflow-y: auto;
            border-top: 1px solid var(--border-color);
        }
        .mobile-nav-panel.open {
            display: block;
        }
        .mobile-nav-panel .nav-link {
            display: block;
            padding: 14px 16px;
            font-size: 16px;
            font-weight: 500;
            border-radius: 10px;
            color: var(--text-secondary);
            margin-bottom: 4px;
        }
        .mobile-nav-panel .nav-link:hover,
        .mobile-nav-panel .nav-link.active {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-nav-panel .search-box {
            width: 100%;
            margin-bottom: 12px;
        }
        .mobile-nav-panel .search-box input {
            width: 100%;
        }
        .mobile-nav-panel .btn-header-cta {
            width: 100%;
            text-align: center;
            padding: 12px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-tertiary);
            padding: 16px 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-tertiary);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--text-tertiary);
            font-size: 12px;
        }
        .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 500;
        }
        .page-hero {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            margin-bottom: 40px;
            background: linear-gradient(135deg, #1A2233 0%, #2D3E5E 55%, #3D6BB8 100%);
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-hero .hero-bg-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.35;
            pointer-events: none;
        }
        .page-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(26, 34, 51, 0.88) 25%, rgba(26, 34, 51, 0.45) 70%, rgba(74, 127, 212, 0.25) 100%);
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            padding: 48px 40px;
            max-width: 680px;
        }
        .page-hero .hero-tag {
            display: inline-block;
            background: rgba(201, 166, 38, 0.2);
            color: #E8C55A;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 16px;
            border: 1px solid rgba(201, 166, 38, 0.3);
        }
        .page-hero h1 {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }
        .page-hero .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.78);
            margin-bottom: 20px;
        }
        .page-hero .hero-stats {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }
        .page-hero .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .page-hero .hero-stat-num {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
        }
        .page-hero .hero-stat-label {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
        }
        .section-block {
            margin-bottom: 48px;
        }
        .section-heading {
            margin-bottom: 28px;
        }
        .section-heading h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.35;
            letter-spacing: -0.3px;
            margin-bottom: 8px;
        }
        .section-heading p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 720px;
        }
        .comparison-table-wrapper {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }
        .comparison-table thead {
            background: var(--bg-cool);
        }
        .comparison-table thead th {
            padding: 16px 18px;
            text-align: left;
            font-weight: 600;
            color: var(--text-primary);
            font-size: 13px;
            letter-spacing: 0.3px;
            border-bottom: 2px solid var(--border-color);
            white-space: nowrap;
        }
        .comparison-table tbody td {
            padding: 16px 18px;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-secondary);
            line-height: 1.7;
            vertical-align: top;
        }
        .comparison-table tbody tr:last-child td {
            border-bottom: none;
        }
        .comparison-table tbody tr:hover {
            background: #FAFBFE;
        }
        .comparison-table .dimension-col {
            font-weight: 600;
            color: var(--text-primary);
            white-space: nowrap;
            background: #F9FAFC;
        }
        .comparison-table .highlight-cell {
            color: var(--primary);
            font-weight: 500;
        }
        .badge-positive {
            display: inline-block;
            background: #E6F7E6;
            color: #2E7D32;
            padding: 2px 8px;
            border-radius: var(--radius-tag);
            font-size: 11px;
            font-weight: 600;
            margin-right: 4px;
        }
        .badge-neutral {
            display: inline-block;
            background: #FFF4E5;
            color: #B05C00;
            padding: 2px 8px;
            border-radius: var(--radius-tag);
            font-size: 11px;
            font-weight: 600;
            margin-right: 4px;
        }
        .faq-section {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px;
            border: 1px solid var(--border-color);
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 18px 0;
        }
        .faq-item:first-child {
            padding-top: 0;
        }
        .faq-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            padding: 4px 0;
            transition: color var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 600;
            flex-shrink: 0;
            transition: all var(--transition);
        }
        .faq-question.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 200ms ease, padding 200ms ease;
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
        }
        .faq-answer.open {
            max-height: 500px;
            padding-top: 12px;
        }
        .score-ring {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .review-highlight-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .review-highlight-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .review-highlight-card .review-quote {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .review-highlight-card .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .review-highlight-card .review-author-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-cool);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
        }
        .review-highlight-card .review-author-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .review-highlight-card .review-author-role {
            font-size: 12px;
            color: var(--text-tertiary);
        }
        .rating-stars {
            color: #E8C55A;
            letter-spacing: 2px;
            font-size: 13px;
        }
        .fixed-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: var(--fixed-bar-h);
            background: var(--text-primary);
            z-index: 90;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 20px;
            box-shadow: 0 -2px 16px rgba(26, 34, 51, 0.16);
        }
        .fixed-cta-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }
        .fixed-cta-bar .cta-text {
            color: #fff;
            font-size: 14px;
            font-weight: 400;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .fixed-cta-bar .cta-text strong {
            color: #E8C55A;
            font-weight: 600;
        }
        .fixed-cta-bar .btn-cta {
            background: var(--accent-gold);
            color: #1A2233;
            padding: 9px 20px;
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 700;
            transition: all var(--transition);
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(201, 166, 38, 0.35);
            flex-shrink: 0;
        }
        .fixed-cta-bar .btn-cta:hover {
            background: var(--accent-gold-dark);
            box-shadow: 0 4px 14px rgba(201, 166, 38, 0.5);
            transform: translateY(-1px);
        }
        .fixed-cta-bar .btn-cta:active {
            transform: translateY(0);
        }
        .site-footer {
            background: #1A2233;
            color: #A0AAB8;
            padding: 48px 0 32px;
            margin-top: 48px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo-text-footer {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: #A0AAB8;
            max-width: 360px;
        }
        .footer-links h3,
        .footer-legal h3 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links ul li a {
            font-size: 13px;
            color: #A0AAB8;
            transition: color var(--transition);
        }
        .footer-links ul li a:hover {
            color: var(--primary);
        }
        .legal-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .legal-links a {
            font-size: 13px;
            color: #A0AAB8;
            transition: color var(--transition);
        }
        .legal-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 12px;
            color: #8A94A6;
            margin-bottom: 8px;
        }
        .footer-bottom .beian {
            font-size: 11px;
            color: #8A94A6;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .footer-bottom .beian a {
            color: #8A94A6;
            transition: color var(--transition);
        }
        .footer-bottom .beian a:hover {
            color: var(--primary);
        }
        @media (max-width: 1024px) {
            .main-nav {
                gap: 2px;
            }
            .main-nav a.nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }
            .search-box input {
                width: 80px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .search-box {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .btn-header-cta {
                display: none;
            }
            .page-hero {
                min-height: auto;
            }
            .page-hero .hero-content {
                padding: 32px 24px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .hero-desc {
                font-size: 14px;
            }
            .page-hero .hero-stats {
                gap: 16px;
            }
            .page-hero .hero-stat-num {
                font-size: 18px;
            }
            .section-heading h2 {
                font-size: 21px;
            }
            .comparison-table-wrapper {
                overflow-x: auto;
            }
            .comparison-table {
                font-size: 12px;
                min-width: 600px;
            }
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 12px 14px;
            }
            .faq-section {
                padding: 20px;
            }
            .faq-question {
                font-size: 14px;
            }
            .faq-answer {
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .fixed-cta-bar {
                height: 56px;
                padding: 0 12px;
            }
            .fixed-cta-bar .cta-text {
                font-size: 12px;
            }
            .fixed-cta-bar .btn-cta {
                padding: 8px 14px;
                font-size: 12px;
            }
            body {
                padding-bottom: 56px;
            }
        }
        @media (max-width: 520px) {
            .logo-text {
                font-size: 16px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 16px;
            }
            .page-hero .hero-content {
                padding: 24px 16px;
            }
            .page-hero h1 {
                font-size: 22px;
            }
            .page-hero .hero-tag {
                font-size: 11px;
                padding: 3px 10px;
            }
            .faq-section {
                padding: 16px;
            }
            .faq-question {
                font-size: 13px;
                gap: 8px;
            }
            .faq-question .faq-icon {
                width: 20px;
                height: 20px;
                font-size: 14px;
            }
            .faq-answer {
                font-size: 13px;
            }
        }

/* roulang page: category7 */
:root {
            --primary: #4A7FD4;
            --primary-light: #E8F0FC;
            --primary-border: rgba(74, 127, 212, 0.3);
            --primary-dark: #3D6BB8;
            --primary-darker: #355DA3;
            --accent-gold: #C9A626;
            --accent-gold-dark: #B08D1E;
            --bg-main: #F7F9FC;
            --bg-white: #FFFFFF;
            --bg-cool: #E8EDF3;
            --text-primary: #1A2233;
            --text-secondary: #4A5568;
            --text-tertiary: #8A94A6;
            --border-color: #E2E8F0;
            --shadow-card: 0 2px 12px rgba(26, 34, 51, 0.06);
            --shadow-hover: 0 8px 24px rgba(26, 34, 51, 0.10);
            --shadow-lg: 0 16px 40px rgba(26, 34, 51, 0.12);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-tag: 6px;
            --radius-img: 12px;
            --transition: 200ms ease;
            --font-sans: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --header-h: 72px;
            --fixed-bar-h: 64px;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-main);
            overflow-x: hidden;
            padding-bottom: var(--fixed-bar-h);
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 3px solid rgba(74, 127, 212, 0.25);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, #6BA3E8 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.25);
        }

        .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }

        .main-nav a.nav-link {
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a.nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .main-nav a.nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }

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

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

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 8px 14px;
            gap: 8px;
            transition: all var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 127, 212, 0.15);
            background: #fff;
        }

        .search-box svg {
            width: 16px;
            height: 16px;
            color: var(--text-tertiary);
            flex-shrink: 0;
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text-primary);
            width: 120px;
        }

        .search-box input::placeholder {
            color: var(--text-tertiary);
        }

        .btn-header-cta {
            background: var(--accent-gold);
            color: #1A2233;
            padding: 9px 18px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all var(--transition);
            box-shadow: 0 2px 8px rgba(201, 166, 38, 0.25);
        }

        .btn-header-cta:hover {
            background: var(--accent-gold-dark);
            box-shadow: 0 4px 12px rgba(201, 166, 38, 0.35);
            transform: translateY(-1px);
        }

        .btn-header-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 4px rgba(201, 166, 38, 0.2);
        }

        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 4px;
            flex-shrink: 0;
        }

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

        /* Breadcrumb */
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            padding: 12px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-tertiary);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }

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

        .breadcrumb .sep {
            color: var(--text-tertiary);
            font-size: 12px;
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* Hero - Category Page */
        .category-hero {
            position: relative;
            padding: 64px 0 56px;
            background: linear-gradient(135deg, #F7F9FC 0%, #EEF4FB 50%, #E8F0FC 100%);
            overflow: hidden;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 320px;
            height: 320px;
            background: rgba(74, 127, 212, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .category-hero-text .hero-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .category-hero-text h1 {
            font-size: 38px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .category-hero-text .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 24px;
            max-width: 520px;
        }

        .hero-cta-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(74, 127, 212, 0.4);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            background: var(--primary-darker);
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(74, 127, 212, 0.25);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            color: var(--primary);
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            border: 1.5px solid var(--primary-border);
            transition: all var(--transition);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            transform: translateY(-1px);
        }

        .btn-outline:active {
            transform: translateY(0);
            border-color: var(--primary-dark);
        }

        .category-hero-image {
            position: relative;
        }

        .category-hero-image img {
            width: 100%;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        .hero-image-badge {
            position: absolute;
            bottom: -16px;
            right: -12px;
            background: #fff;
            border-radius: var(--radius-card);
            padding: 16px 20px;
            box-shadow: var(--shadow-hover);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hero-image-badge .badge-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
        }

        .hero-image-badge .badge-label {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.4;
        }

        /* Section common */
        .section {
            padding: 64px 0;
        }

        .section-tight {
            padding: 48px 0;
        }

        .section-heading {
            margin-bottom: 36px;
        }

        .section-heading h2 {
            font-size: 28px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-heading p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
            max-width: 640px;
        }

        .section-heading.center {
            text-align: center;
        }

        .section-heading.center p {
            margin-left: auto;
            margin-right: auto;
        }

        /* Carousel / Horizontal scroll */
        .carousel-wrap {
            position: relative;
            overflow: hidden;
            margin: 0 -20px;
            padding: 0 20px;
        }

        .carousel-track {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding: 12px 4px 20px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--primary-border) transparent;
        }

        .carousel-track::-webkit-scrollbar {
            height: 6px;
        }

        .carousel-track::-webkit-scrollbar-track {
            background: transparent;
        }

        .carousel-track::-webkit-scrollbar-thumb {
            background: var(--primary-border);
            border-radius: 999px;
        }

        .carousel-card {
            flex: 0 0 300px;
            scroll-snap-align: start;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid var(--border-color);
        }

        .carousel-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary-border);
        }

        .carousel-card img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }

        .carousel-card-body {
            padding: 16px 18px 18px;
        }

        .carousel-card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
        }

        .carousel-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .carousel-card-body p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .carousel-card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition);
        }

        .carousel-card-link:hover {
            gap: 8px;
            color: var(--primary-dark);
        }

        /* Two-column content */
        .two-col-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .two-col-text h2 {
            font-size: 26px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .two-col-text .lead {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .two-col-text .body-text {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        .two-col-image img {
            width: 100%;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 8px;
        }

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

        .feature-list-item .check-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* Stats bar */
        .stats-bar {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px 32px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            border: px solid var(--border-color);
        }
        .stats-item {
            text-align: center;
        }
        .stats-item .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stats-item .stat-label {
            font-size: 13px;
            color: var(--text-tertiary);
        }
        /* FAQ */
        .faq-section {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px;
            border: 1px solid var(--border-color);
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 18px 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
            transition: transform var(--transition);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 200ms ease;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.75;
        }
        .faq-answer.open {
            max-height: 400px;
        }
        /* Footer */
        .site-footer {
            background: #1A2233;
            color: #A0AAB8;
            padding: 48px 0 24px;
            margin-top: 64px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .logo-text-footer {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #A0AAB8;
        }
        .footer-links h3,
        .footer-legal h3 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links ul li a,
        .legal-links a {
            font-size: 14px;
            color: #A0AAB8;
            transition: color var(--transition);
        }
        .footer-links ul li a:hover,
        .legal-links a:hover {
            color: var(--primary);
        }
        .legal-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: #78839A;
        }
        .beian {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 8px;
        }
        .beian span a {
            color: #78839A;
        }
        .beian span a:hover {
            color: var(--primary);
        }
        /* Bottom fixed CTA */
        .bottom-fixed-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: var(--fixed-bar-h);
            background: #1A2233;
            color: #fff;
            display: flex;
            align-items: center;
            z-index: 99;
            box-shadow: 0 -2px 16px rgba(0,0,0,0.15);
        }
        .bottom-fixed-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .bottom-fixed-bar p {
            font-size: 14px;
            color: #E8EDF3;
            margin: 0;
        }
        .btn-bottom-cta {
            background: var(--primary);
            color: #fff;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: background var(--transition);
        }
        .btn-bottom-cta:hover {
            background: var(--primary-dark);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .search-box {
                display: none;
            }
            .category-hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .category-hero-text h1 {
                font-size: 30px;
            }
            .two-col-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .bottom-fixed-bar .container {
                flex-direction: column;
                justify-content: center;
                gap: 8px;
                text-align: center;
            }
            .bottom-fixed-bar p {
                font-size: 12px;
            }
        }
        @media (max-width: 520px) {
            .category-hero-text h1 {
                font-size: 24px;
            }
            .carousel-card {
                flex: 0 0 260px;
            }
            .stats-bar {
                grid-template-columns: 1fr;
            }
            .section-heading h2 {
                font-size: 22px;
            }
        }

.main-nav.mobile-open {
            display: flex;
            flex-direction: column;
            position: absolute;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: #fff;
            padding: 20px;
            box-shadow: var(--shadow-hover);
            border-bottom: 1px solid var(--border-color);
            z-index: 99;
        }
        .main-nav.mobile-open a.nav-link {
            padding: 10px 16px;
            font-size: 15px;
        }
        @media (min-width: 1025px) {
            .main-nav.mobile-open {
                display: none;
            }
        }

/* roulang page: category6 */
@layer base {
            :root {
                --primary: #4A7FD4;
                --primary-light: #E8F0FC;
                --primary-border: rgba(74, 127, 212, 0.3);
                --primary-dark: #3D6BB8;
                --primary-darker: #355DA3;
                --accent-gold: #C9A626;
                --accent-gold-dark: #B08D1E;
                --bg-main: #F7F9FC;
                --bg-white: #FFFFFF;
                --bg-cool: #E8EDF3;
                --text-primary: #1A2233;
                --text-secondary: #4A5568;
                --text-tertiary: #8A94A6;
                --border-color: #E2E8F0;
                --shadow-card: 0 2px 12px rgba(26, 34, 51, 0.06);
                --shadow-hover: 0 8px 24px rgba(26, 34, 51, 0.10);
                --shadow-lg: 0 16px 40px rgba(26, 34, 51, 0.12);
                --radius-card: 14px;
                --radius-btn: 10px;
                --radius-pill: 999px;
                --radius-tag: 6px;
                --radius-img: 12px;
                --transition: 200ms ease;
                --font-sans: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
                --header-h: 72px;
                --fixed-bar-h: 64px;
            }
        }

:root {
            --primary: #4A7FD4;
            --primary-light: #E8F0FC;
            --primary-border: rgba(74, 127, 212, 0.3);
            --primary-dark: #3D6BB8;
            --primary-darker: #355DA3;
            --accent-gold: #C9A626;
            --accent-gold-dark: #B08D1E;
            --bg-main: #F7F9FC;
            --bg-white: #FFFFFF;
            --bg-cool: #E8EDF3;
            --text-primary: #1A2233;
            --text-secondary: #4A5568;
            --text-tertiary: #8A94A6;
            --border-color: #E2E8F0;
            --shadow-card: 0 2px 12px rgba(26, 34, 51, 0.06);
            --shadow-hover: 0 8px 24px rgba(26, 34, 51, 0.10);
            --shadow-lg: 0 16px 40px rgba(26, 34, 51, 0.12);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-tag: 6px;
            --radius-img: 12px;
            --transition: 200ms ease;
            --font-sans: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --header-h: 72px;
            --fixed-bar-h: 64px;
        }

        *,
        *::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-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-main);
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 3px solid rgba(74, 127, 212, 0.25);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, #6BA3E8 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(74, 127, 212, 0.25);
        }

        .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .main-nav a.nav-link {
            padding: 8px 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a.nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .main-nav a.nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }

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

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

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 8px 14px;
            gap: 8px;
            transition: all var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 127, 212, 0.15);
            background: #fff;
        }

        .search-box svg {
            width: 16px;
            height: 16px;
            color: var(--text-tertiary);
            flex-shrink: 0;
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text-primary);
            width: 120px;
        }

        .search-box input::placeholder {
            color: var(--text-tertiary);
        }

        .btn-header-cta {
            background: var(--primary);
            color: #fff;
            padding: 9px 18px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all var(--transition);
        }

        .btn-header-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(74, 127, 212, 0.3);
        }

        .btn-header-cta:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }

        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }

        .mobile-menu-btn:hover {
            background: var(--primary-light);
        }

        .mobile-menu-btn span {
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .mobile-menu-btn.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

        .mobile-menu-btn.open span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-btn.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        .mobile-nav-panel {
            display: none;
            position: absolute;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            padding: 16px 20px;
            z-index: 99;
        }

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

        .mobile-nav-panel .nav-link {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
        }

        .mobile-nav-panel .nav-link:hover,
        .mobile-nav-panel .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .mobile-nav-panel .search-box {
            width: 100%;
            margin-bottom: 8px;
        }

        .mobile-nav-panel .search-box input {
            width: 100%;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-tertiary);
            padding: 16px 0 8px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-tertiary);
            transition: color var(--transition);
        }

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

        .breadcrumb .separator {
            color: var(--text-tertiary);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 500;
        }

        /* Hero */
        .hero-fullwidth {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background-image: linear-gradient(135deg, rgba(26, 34, 51, 0.82) 0%, rgba(74, 127, 212, 0.65) 55%, rgba(201, 166, 38, 0.45) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 60px 0 50px;
            margin-bottom: 0;
        }

        .hero-fullwidth .container {
            width: 100%;
        }

        .hero-fullwidth .hero-content {
            max-width: 680px;
            color: #fff;
        }

        .hero-fullwidth .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 18px;
        }

        .hero-fullwidth .hero-badge svg {
            width: 15px;
            height: 15px;
        }

        .hero-fullwidth h1 {
            font-size: 44px;
            line-height: 1.25;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .hero-fullwidth .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 28px;
            max-width: 560px;
        }

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

        .btn-primary {
            background: var(--primary);
            color: #fff;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(74, 127, 212, 0.35);
        }

        .btn-primary:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }

        .btn-ghost-light {
            background: transparent;
            color: #fff;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .hero-fullwidth .hero-trust-badge {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .hero-fullwidth .hero-trust-badge .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
        }

        .hero-fullwidth .hero-trust-badge .trust-item svg {
            width: 16px;
            height: 16px;
            color: var(--accent-gold);
        }

        /* Section Common */
        .section {
            padding: 56px 0;
        }

        .section-header {
            margin-bottom: 32px;
        }

        .section-header h2 {
            font-size: 28px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 640px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
        }

        /* Icon Cards - 三列差异化图标卡 */
        .icon-cards-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 24px;
            margin-bottom: 40px;
        }

        .icon-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            transition: all var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }

        .icon-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-border);
        }

        .icon-card.card-wide {
            flex-direction: row;
            align-items: center;
            gap: 20px;
            padding: 28px 24px;
        }

        .icon-card.card-wide .card-icon {
            width: 64px;
            height: 64px;
            flex-shrink: 0;
        }

        .icon-card.card-wide .card-content {
            flex: 1;
        }

        .icon-card.card-vertical {
            justify-content: space-between;
            gap: 16px;
        }

        .icon-card.card-vertical .card-icon {
            width: 48px;
            height: 48px;
        }

        .icon-card.card-vertical .card-content {
            margin-top: 8px;
        }

        .icon-card.card-metric {
            background: linear-gradient(135deg, #1A2233 0%, #2D3F5E 100%);
            color: #fff;
            border: none;
            justify-content: center;
            align-items: center;
            text-align: center;
            gap: 12px;
            padding: 28px 20px;
        }

        .icon-card.card-metric .card-metric-number {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.1;
            letter-spacing: -1px;
            color: var(--accent-gold);
        }

        .icon-card.card-metric .card-metric-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
        }

        .card-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: var(--primary-light);
            border: 1.5px solid var(--primary-border);
            color: var(--primary);
        }

        .card-icon svg {
            width: 28px;
            height: 28px;
        }

        .icon-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .icon-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .icon-card .card-link {
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition);
        }

        .icon-card .card-link:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        .icon-card .card-tag {
            display: inline-block;
            background: var(--bg-cool);
            color: var(--text-secondary);
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            margin-bottom: 8px;
            align-self: flex-start;
        }

        .icon-card.card-metric .card-metric-note {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 4px;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            transition: all var(--transition);
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            transition: all var(--transition);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 200ms ease, padding 200ms ease;
            padding: 0 20px;
        }

        .faq-answer-inner {
            padding: 0 0 16px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
        }

        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 16px;
        }

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

        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            padding: 24px 20px;
            position: relative;
            transition: all var(--transition);
        }

        .step-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

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

        /* Deep Content */
        .deep-content {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            padding: 32px;
        }

        .deep-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .deep-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .deep-content p:last-child {
            margin-bottom: 0;
        }

        /* Stats Bar */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            background: linear-gradient(135deg, #1A2233 0%, #2D4A6E 100%);
            border-radius: var(--radius-card);
            padding: 32px 28px;
        }

        .stat-item {
            text-align: center;
        }

        .stat-item .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--accent-gold);
            line-height: 1.2;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 4px;
        }

        /* CTA Form */
        .cta-form-wrapper {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            padding: 32px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .cta-form-wrapper .form-info h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .cta-form-wrapper .form-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .cta-form-wrapper .form-info .contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .cta-form-wrapper .form-info .contact-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .cta-form-wrapper .form-info .contact-list li svg {
            width: 16px;
            height: 16px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .form-group label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-btn);
            padding: 10px 14px;
            font-size: 14px;
            color: var(--text-primary);
            background: var(--bg-main);
            transition: all var(--transition);
            outline: none;
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 127, 212, 0.15);
            background: #fff;
        }

        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }

        .btn-submit {
            background: var(--primary);
            color: #fff;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 4px;
        }

        .btn-submit:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(74, 127, 212, 0.35);
        }

        /* Fixed Bottom Bar */
        .fixed-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 90;
            background: #1A2233;
            height: var(--fixed-bar-h);
            display: flex;
            align-items: center;
            box-shadow: 0 -4px 16px rgba(26, 34, 51, 0.15);
        }

        .fixed-bottom-bar .container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            width: 100%;
        }

        .fixed-bottom-bar p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
        }

        .fixed-bottom-bar .btn-fixed-cta {
            background: var(--accent-gold);
            color: #1A2233;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 700;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .fixed-bottom-bar .btn-fixed-cta:hover {
            background: var(--accent-gold-dark);
            transform: translateY(-1px);
        }

        /* Footer */
        .site-footer {
            background: #1A2233;
            color: #A0AAB8;
            padding-top: 48px;
            padding-bottom: calc(var(--fixed-bar-h) + 40px);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .logo-text-footer {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #A0AAB8;
            max-width: 320px;
        }

        .footer-links h3,
        .footer-legal h3 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links ul li a,
        .footer-legal .legal-links a {
            font-size: 14px;
            color: #A0AAB8;
            transition: color var(--transition);
            display: inline-block;
        }

        .footer-links ul li a:hover,
        .footer-legal .legal-links a:hover {
            color: var(--primary);
        }

        .footer-legal .legal-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: #A0AAB8;
            margin-bottom: 8px;
        }

        .footer-bottom .beian {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 12px;
            font-size: 12px;
            color: #8A94A6;
        }

        .footer-bottom .beian a {
            color: #8A94A6;
            transition: color var(--transition);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav a.nav-link {
                padding: 8px 8px;
                font-size: 13px;
            }
            .icon-cards-grid {
                grid-template-columns: 1fr 1fr;
            }
            .icon-card.card-wide {
                grid-column: span 2;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-form-wrapper {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .header-actions .search-box {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .hero-fullwidth {
                min-height: 420px;
                padding: 40px 0;
            }
            .hero-fullwidth h1 {
                font-size: 30px;
            }
            .hero-fullwidth .hero-subtitle {
                font-size: 15px;
            }
            .section {
                padding: 40px 0;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .icon-cards-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .icon-card.card-wide {
                grid-column: span 1;
                flex-direction: column;
                align-items: flex-start;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-bar {
                grid-template-columns: 1fr;
                gap: 16px;
                padding: 24px 20px;
            }
            .deep-content {
                padding: 20px;
            }
            .cta-form-wrapper {
                padding: 20px;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .fixed-bottom-bar {
                height: 56px;
            }
            .fixed-bottom-bar .container {
                justify-content: space-between;
                gap: 10px;
            }
            .fixed-bottom-bar p {
                font-size: 13px;
                font-weight: 400;
            }
            .fixed-bottom-bar .btn-fixed-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
            .site-footer {
                padding-bottom: calc(56px + 32px);
            }
            .hero-fullwidth .hero-trust-badge {
                gap: 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-fullwidth h1 {
                font-size: 26px;
            }
            .hero-fullwidth .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .hero-fullwidth .hero-cta-group .btn-primary,
            .hero-fullwidth .hero-cta-group .btn-ghost-light {
                width: 100%;
                justify-content: center;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .breadcrumb {
                font-size: 12px;
            }
            .icon-card.card-wide {
                padding: 20px 16px;
            }
            .icon-card .card-icon {
                width: 44px;
                height: 44px;
            }
            .icon-card.card-wide .card-icon {
                width: 52px;
                height: 52px;
            }
        }