/* roulang page: index */
:root {
            --primary: #1E6FBA;
            --primary-dark: #0D5A9E;
            --primary-light: #E8F1F9;
            --accent: #E5A93D;
            --accent-red: #C8472B;
            --bg: #F6F9FC;
            --bg-white: #FFFFFF;
            --text: #1B2A3A;
            --text-secondary: #5A6B7D;
            --text-muted: #8A9AAE;
            --border: rgba(26, 60, 100, 0.08);
            --border-light: rgba(26, 60, 100, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 6px rgba(26, 60, 100, 0.05);
            --shadow-md: 0 2px 6px rgba(26, 60, 100, 0.05), 0 12px 28px rgba(26, 60, 100, 0.07);
            --shadow-lg: 0 4px 12px rgba(26, 60, 100, 0.08), 0 16px 36px rgba(26, 60, 100, 0.1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --spacing-section: 72px;
            --spacing-card: 24px;
            --transition: 180ms ease;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-family);
            color: var(--text);
            line-height: 1.4;
            margin-top: 0;
        }

        h1 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 700;
        }

        h2 {
            font-size: clamp(1.35rem, 2.8vw, 1.9rem);
            font-weight: 700;
        }

        h3 {
            font-size: clamp(1.1rem, 2vw, 1.35rem);
            font-weight: 600;
        }

        p {
            margin-bottom: 1.25rem;
            color: var(--text-secondary);
        }

        .text-muted {
            color: var(--text-muted);
            font-size: 0.875rem;
        }

        .text-small {
            font-size: 0.875rem;
        }

        .text-bold {
            font-weight: 700;
            color: var(--text);
        }

        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        .section-padding {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        .section-padding-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }

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

        .section-header .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .section-header h2 {
            margin-bottom: 10px;
        }

        .section-header p {
            max-width: 640px;
            font-size: 0.95rem;
            margin-bottom: 0;
        }

        .bg-white-section {
            background-color: var(--bg-white);
        }

        .bg-light-section {
            background-color: var(--bg);
        }

        /* Header / Navigation */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(26, 60, 100, 0.04);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0 16px;
            height: 64px;
            display: flex;
            align-items: center;
        }

        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding-left: 0;
            padding-right: 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text);
            text-decoration: none;
            white-space: nowrap;
        }

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

        .logo .logo-mark {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
        }

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

        .nav-desktop a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition);
            white-space: nowrap;
        }

        .nav-desktop a:hover,
        .nav-desktop a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-desktop a.active {
            color: var(--primary);
            background: var(--primary-light);
            border-bottom: 2px solid var(--primary);
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        }

        .nav-cta {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition);
        }

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

        /* Mobile drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: var(--bg-white);
            z-index: 99;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 16px;
            max-height: calc(100vh - 64px);
            overflow-y: auto;
        }

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

        .mobile-drawer a {
            display: block;
            padding: 12px 16px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: background-color var(--transition), color var(--transition);
        }

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

        /* Bottom Tab Nav */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            z-index: 98;
            padding: 6px 4px;
            padding-bottom: calc(6px + env(safe-area-inset-bottom));
        }

        .bottom-tab-nav .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 600px;
            margin: 0 auto;
        }

        .bottom-tab-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            color: var(--text-muted);
            font-size: 0.65rem;
            font-weight: 500;
            text-decoration: none;
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            transition: color var(--transition), background-color var(--transition);
            min-width: 52px;
        }

        .bottom-tab-nav a .tab-icon {
            font-size: 1.1rem;
        }

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

        .bottom-tab-nav a:hover {
            color: var(--primary);
        }

        body.has-bottom-tab {
            padding-bottom: 64px;
        }

        /* Hero */
        .hero-section {
            background: linear-gradient(135deg, #F0F6FC 0%, #E8F1F9 40%, #F6F9FC 100%);
            padding: 56px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -5%;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(30, 111, 186, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section .container-main {
            position: relative;
            z-index: 1;
        }

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

        .hero-text h1 {
            margin-bottom: 16px;
        }

        .hero-text .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            line-height: 1.7;
            max-width: 480px;
        }

        .hero-cta {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .hero-data-cards {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-data-card {
            background: rgba(255, 255, 255, 0.88);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 16px 24px;
            min-width: 130px;
            flex: 1;
            text-align: center;
        }

        .hero-data-card .data-number {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }

        .hero-data-card .data-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

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

        .hero-visual .hero-bg-image {
            width: 100%;
            max-width: 480px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            aspect-ratio: 16/11;
            object-fit: cover;
        }

        .hero-floating-badge {
            position: absolute;
            bottom: -18px;
            left: 20px;
            background: var(--accent);
            color: #fff;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 0.8rem;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(229, 169, 61, 0.35);
            letter-spacing: 0.3px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            font-family: var(--font-family);
            font-size: 0.9rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: 2px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(30, 111, 186, 0.3);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            background: #0A4A82;
            border-color: #0A4A82;
            transform: scale(0.98);
            box-shadow: none;
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        .btn-accent:hover,
        .btn-accent:focus {
            background: #D4952E;
            border-color: #D4952E;
            color: #fff;
            box-shadow: 0 4px 12px rgba(229, 169, 61, 0.35);
            transform: translateY(-1px);
        }

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

        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        .btn-sm {
            padding: 7px 16px;
            font-size: 0.8rem;
            border-width: 1.5px;
        }

        .btn-lg {
            padding: 12px 32px;
            font-size: 1rem;
        }

        /* Cards */
        .card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: var(--spacing-card);
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .card-title {
            font-weight: 700;
            color: var(--text);
            font-size: 1.05rem;
            margin-bottom: 8px;
        }

        .card-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }

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

        .metric-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 20px 24px;
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .metric-card .metric-number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 6px;
        }

        .metric-card .metric-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .metric-card .metric-desc {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* Service Matrix */
        .service-matrix {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }

        .service-main-card {
            flex: 1 1 52%;
            min-width: 300px;
            background: linear-gradient(135deg, #F0F6FC 0%, #E8F1F9 100%);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .service-main-card .service-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 14px;
        }

        .service-main-card h3 {
            font-size: 1.4rem;
            margin-bottom: 10px;
        }

        .service-main-card p {
            font-size: 0.95rem;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .service-side-cards {
            flex: 1 1 40%;
            min-width: 260px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .service-side-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 18px 20px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .service-side-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(3px);
        }

        .service-side-card .side-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .service-side-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }

        .service-side-card p {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }

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

        .comparison-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: box-shadow var(--transition);
        }

        .comparison-card:hover {
            box-shadow: var(--shadow-md);
        }

        .comparison-card .comparison-subject {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.85rem;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 10px 12px;
            text-align: left;
            border-bottom: 1px solid var(--border-light);
        }

        .comparison-table th {
            background: var(--primary-light);
            color: var(--text);
            font-weight: 600;
            font-size: 0.8rem;
            letter-spacing: 0.3px;
        }

        .comparison-table td {
            color: var(--text-secondary);
        }

        .comparison-table .highlight-number {
            color: var(--accent);
            font-weight: 700;
            font-size: 1.05rem;
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        /* News */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item {
            display: flex;
            gap: 20px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 16px;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .news-item .news-image {
            flex-shrink: 0;
            width: 160px;
            height: 107px;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }

        .news-item .news-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
        }

        .news-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .news-content .news-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: 4px;
        }

        .news-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .news-content .news-excerpt {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .news-content .read-more {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
        }

        .news-content .read-more .arrow {
            transition: transform 180ms ease;
        }

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

        /* Brand section */
        .brand-section {
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .brand-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .brand-text h3 {
            margin-bottom: 14px;
            font-size: 1.3rem;
        }

        .brand-text p {
            font-size: 0.95rem;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

        .brand-text .brand-points {
            list-style: none;
            padding: 0;
            margin-bottom: 16px;
        }

        .brand-text .brand-points li {
            padding: 6px 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .brand-text .brand-points li i {
            color: var(--accent);
            margin-top: 4px;
            flex-shrink: 0;
        }

        .brand-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

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

        /* Deep content */
        .deep-content-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 36px;
        }

        .deep-content-card h3 {
            font-size: 1.3rem;
            margin-bottom: 16px;
            color: var(--text);
        }

        .deep-content-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-top: 20px;
            margin-bottom: 8px;
        }

        .deep-content-card p {
            font-size: 0.92rem;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

        .deep-content-card ul,
        .deep-content-card ol {
            padding-left: 20px;
            margin-bottom: 16px;
        }

        .deep-content-card li {
            font-size: 0.92rem;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }

        /* Selling points triple */
        .selling-triple {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .selling-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .selling-card .selling-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            color: var(--primary);
            font-size: 1.3rem;
        }

        .selling-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .selling-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Media scroll */
        .media-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 12px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .media-scroll::-webkit-scrollbar {
            height: 6px;
        }

        .media-scroll::-webkit-scrollbar-track {
            background: var(--bg);
            border-radius: 4px;
        }

        .media-scroll::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }

        .media-card {
            flex: 0 0 280px;
            scroll-snap-align: start;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 16px;
            transition: box-shadow var(--transition);
        }

        .media-card:hover {
            box-shadow: var(--shadow-md);
        }

        .media-card .media-thumb {
            width: 100%;
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 10px;
            aspect-ratio: 16/10;
        }

        .media-card .media-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
        }

        .media-card .media-type {
            font-size: 0.7rem;
            color: var(--primary);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }

        .media-card h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }

        .media-card p {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.5;
        }

        /* Review bubbles */
        .review-bubbles {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .review-bubble {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 16px 20px;
            max-width: 340px;
            flex: 1 1 280px;
            position: relative;
        }

        .review-bubble::before {
            content: '';
            position: absolute;
            top: -8px;
            left: 30px;
            width: 16px;
            height: 16px;
            background: var(--bg-white);
            border-left: 1px solid var(--border);
            border-top: 1px solid var(--border);
            transform: rotate(45deg);
        }

        .review-bubble .review-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 0.85rem;
            margin-bottom: 8px;
        }

        .review-bubble p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
        }

        .review-bubble .review-name {
            font-size: 0.78rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

        .faq-item.open {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 20px;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            font-family: var(--font-family);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            text-align: left;
            transition: color var(--transition);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.1rem;
            transition: transform 200ms ease;
            margin-left: 12px;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 250ms ease, padding 250ms ease;
            padding: 0 20px;
        }

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

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Form */
        .form-section {
            background: linear-gradient(135deg, #F0F6FC 0%, #E8F1F9 100%);
        }

        .form-wrapper {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 32px;
            align-items: center;
        }

        .form-info h3 {
            margin-bottom: 12px;
        }

        .form-info p {
            font-size: 0.92rem;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }

        .form-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 28px;
        }

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

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 10px 14px;
            font-family: var(--font-family);
            font-size: 0.9rem;
            color: var(--text);
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: border-color var(--transition), box-shadow 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 2px rgba(30, 111, 186, 0.15);
        }

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

        .form-submit {
            width: 100%;
            justify-content: center;
            margin-top: 8px;
        }

        /* Footer */
        .site-footer {
            background: #1B2A3A;
            color: #B8C7D6;
            padding: 40px 0 24px;
            margin-top: 0;
        }

        .site-footer .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 24px;
        }

        .site-footer .footer-brand .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            display: block;
        }

        .site-footer .footer-brand p {
            font-size: 0.85rem;
            color: #8FA3B5;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .site-footer h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .site-footer a {
            display: block;
            font-size: 0.83rem;
            color: #B8C7D6;
            text-decoration: none;
            margin-bottom: 6px;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 16px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.78rem;
            color: #8FA3B5;
            margin-bottom: 4px;
        }

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

        .footer-bottom .footer-links a {
            font-size: 0.78rem;
            color: #B8C7D6;
            display: inline;
            margin-bottom: 0;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 56px;
            }

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

            .hero-text .hero-subtitle {
                max-width: 100%;
            }

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

            .metrics-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

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

            .comparison-container {
                grid-template-columns: 1fr;
                gap: 16px;
            }

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

            .site-footer .footer-inner {
                grid-template-columns: 1fr 1fr;
            }

            .nav-desktop a {
                padding: 8px 8px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 40px;
            }

            .site-header {
                height: 56px;
                padding: 0 12px;
            }

            .nav-desktop {
                display: none;
            }

            .nav-cta .btn {
                display: none;
            }

            .hamburger-btn {
                display: block;
            }

            .hero-section {
                padding: 32px 0 56px;
            }

            .hero-text h1 {
                font-size: clamp(1.5rem, 5vw, 1.9rem);
            }

            .selling-triple {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .metrics-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .metric-card {
                padding: 14px 16px;
            }

            .metric-card .metric-number {
                font-size: 1.5rem;
            }

            .service-main-card {
                padding: 24px;
            }

            .service-side-card {
                padding: 14px 16px;
            }

            .deep-content-card {
                padding: 24px;
            }

            .news-item {
                flex-direction: column;
                gap: 12px;
            }

            .news-item .news-image {
                width: 100%;
                height: auto;
                aspect-ratio: 16/9;
            }

            .bottom-tab-nav {
                display: block;
            }

            body.has-bottom-tab {
                padding-bottom: 72px;
            }

            .site-footer .footer-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .form-card {
                padding: 20px;
            }

            .media-card {
                flex: 0 0 240px;
            }
        }

        @media (max-width: 520px) {
            .hero-data-cards {
                flex-direction: column;
                gap: 8px;
            }

            .hero-data-card {
                min-width: 100%;
                padding: 12px 16px;
            }

            .metrics-row {
                grid-template-columns: 1fr;
            }

            .service-matrix {
                flex-direction: column;
            }

            .service-main-card {
                min-width: 100%;
            }

            .service-side-cards {
                min-width: 100%;
            }

            .comparison-card {
                padding: 16px;
            }

            .comparison-table th,
            .comparison-table td {
                padding: 8px;
                font-size: 0.78rem;
            }

            .btn {
                padding: 9px 18px;
                font-size: 0.85rem;
                justify-content: center;
                width: 100%;
            }

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

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

            .bottom-tab-nav a {
                font-size: 0.58rem;
                padding: 3px 6px;
                min-width: 44px;
            }

            .bottom-tab-nav a .tab-icon {
                font-size: 0.95rem;
            }
        }

/* roulang page: category3 */
:root {
      --primary: #1E6FBA;
      --primary-dark: #0D5A9E;
      --primary-light: #E8F1F9;
      --accent: #E5A93D;
      --accent-red: #C8472B;
      --bg: #F6F9FC;
      --bg-white: #FFFFFF;
      --text: #1B2A3A;
      --text-secondary: #5A6B7D;
      --text-muted: #8A9AAE;
      --border: rgba(26, 60, 100, 0.08);
      --border-light: rgba(26, 60, 100, 0.06);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 6px rgba(26, 60, 100, 0.05);
      --shadow-md: 0 2px 6px rgba(26, 60, 100, 0.05), 0 12px 28px rgba(26, 60, 100, 0.07);
      --shadow-lg: 0 4px 12px rgba(26, 60, 100, 0.08), 0 16px 36px rgba(26, 60, 100, 0.1);
      --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
      --spacing-section: 72px;
      --spacing-card: 24px;
      --transition: 180ms ease;
    }

    html {
      scroll-behavior: smooth;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    body {
      font-family: var(--font-family);
      font-size: 1rem;
      line-height: 1.8;
      color: var(--text);
      background-color: var(--bg);
      margin: 0;
      padding: 0;
      overflow-x: hidden;
    }

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

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

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius-sm);
    }

    .text-muted {
      color: var(--text-muted);
      font-size: 0.875rem;
    }
    .text-small {
      font-size: 0.875rem;
    }
    .text-bold {
      font-weight: 700;
      color: var(--text);
    }

    .container-main {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 16px;
      padding-right: 16px;
    }

    .section-padding {
      padding-top: var(--spacing-section);
      padding-bottom: var(--spacing-section);
    }
    .section-padding-sm {
      padding-top: 48px;
      padding-bottom: 48px;
    }

    .section-header {
      margin-bottom: 32px;
    }
    .section-header .section-tag {
      display: inline-block;
      background: var(--primary-light);
      color: var(--primary);
      padding: 4px 14px;
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 600;
      margin-bottom: 10px;
      letter-spacing: 0.5px;
    }
    .section-header h2 {
      margin-bottom: 10px;
    }
    .section-header p {
      max-width: 640px;
      font-size: 0.95rem;
      margin-bottom: 0;
    }

    h1, h2, h3, h4, h5, h6 {
      font-family: var(--font-family);
      color: var(--text);
      font-weight: 700;
    }
    h1 {
      font-size: clamp(1.75rem, 3.5vw, 2.5rem);
      margin-bottom: 1rem;
    }
    h2 {
      font-size: clamp(1.35rem, 2.8vw, 1.9rem);
    }
    h3 {
      font-size: clamp(1.1rem, 2vw, 1.35rem);
      font-weight: 600;
    }
    p {
      margin-bottom: 1.25rem;
    }

    .bg-white-section {
      background-color: var(--bg-white);
    }
    .bg-light-section {
      background-color: var(--bg);
    }

    /* Header */
    .site-header {
      background: var(--bg-white);
      border-bottom: 1px solid var(--border);
      box-shadow: 0 1px 4px rgba(26, 60, 100, 0.04);
      position: sticky;
      top: 0;
      z-index: 100;
      padding: 0 16px;
      height: 64px;
      display: flex;
      align-items: center;
    }
    .site-header .container-main {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      padding-left: 0;
      padding-right: 0;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 1.15rem;
      color: var(--text);
      text-decoration: none;
      white-space: nowrap;
    }
    .logo:hover,
    .logo:focus {
      color: var(--primary);
    }
    .logo .logo-mark {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 0.9rem;
    }
    .nav-desktop {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-desktop a {
      color: var(--text-secondary);
      font-size: 0.9rem;
      font-weight: 500;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      text-decoration: none;
      transition: color var(--transition), background-color var(--transition);
      white-space: nowrap;
    }
    .nav-desktop a:hover,
    .nav-desktop a:focus {
      color: var(--primary);
      background: var(--primary-light);
    }
    .nav-desktop a.active {
      color: var(--primary);
      background: var(--primary-light);
      border-bottom: 2px solid var(--primary);
      border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    }
    .nav-cta {
      display: flex;
      gap: 8px;
      align-items: center;
    }
    .hamburger-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.4rem;
      color: var(--text-secondary);
      cursor: pointer;
      padding: 6px 10px;
      border-radius: var(--radius-sm);
    }
    .hamburger-btn:hover {
      background: var(--primary-light);
      color: var(--primary);
    }

    /* Mobile drawer */
    .mobile-drawer {
      position: fixed;
      top: 64px;
      left: 0;
      right: 0;
      background: var(--bg-white);
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow-md);
      z-index: 99;
      display: none;
      flex-direction: column;
      padding: 16px;
      gap: 4px;
    }
    .mobile-drawer.open {
      display: flex;
    }
    .mobile-drawer a {
      padding: 10px 14px;
      color: var(--text-secondary);
      font-size: 1rem;
      font-weight: 500;
      border-radius: var(--radius-sm);
    }
    .mobile-drawer a:hover {
      background: var(--primary-light);
      color: var(--primary);
    }
    .mobile-drawer a.active {
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 700;
    }

    /* Mobile bottom tab */
    .bottom-tab-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: var(--bg-white);
      border-top: 1px solid var(--border);
      display: none;
      z-index: 99;
      padding-bottom: env(safe-area-inset-bottom);
      box-shadow: 0 -2px 10px rgba(26, 60, 100, 0.06);
    }
    .bottom-tab-bar-inner {
      display: flex;
      align-items: center;
      justify-content: space-around;
      max-width: 500px;
      margin: 0 auto;
      padding: 6px 8px;
    }
    .bottom-tab-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 2px;
      font-size: 0.65rem;
      color: var(--text-muted);
      text-decoration: none;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      white-space: nowrap;
    }
    .bottom-tab-item i {
      font-size: 1.15rem;
    }
    .bottom-tab-item.active {
      color: var(--primary);
      font-weight: 700;
    }
    .bottom-tab-item:hover {
      color: var(--primary);
    }

    /* Breadcrumb */
    .breadcrumb-wrap {
      background: var(--bg-white);
      border-bottom: 1px solid var(--border-light);
      padding: 10px 0;
      font-size: 0.85rem;
    }
    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 4px;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .breadcrumb li {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .breadcrumb li + li::before {
      content: "/";
      color: var(--text-muted);
      margin: 0 6px;
    }
    .breadcrumb a {
      color: var(--text-secondary);
    }
    .breadcrumb a:hover {
      color: var(--primary);
    }
    .breadcrumb li:last-child {
      color: var(--text);
      font-weight: 600;
    }

    /* Page hero */
    .page-hero {
      background: linear-gradient(135deg, #F0F7FD 0%, #E8F1F9 50%, #F8F4E6 100%);
      padding: 56px 0 48px;
      position: relative;
      overflow: hidden;
    }
    .page-hero .hero-bg-image {
      position: absolute;
      top: 0;
      right: 0;
      width: 50%;
      height: 100%;
      background-image: url('/assets/images/backpic/back-2.jpg');
      background-size: cover;
      background-position: center;
      opacity: 0.15;
      pointer-events: none;
    }
    .page-hero-content {
      position: relative;
      z-index: 1;
      max-width: 680px;
    }
    .page-hero .hero-tag {
      display: inline-block;
      background: rgba(30, 111, 186, 0.1);
      color: var(--primary);
      padding: 4px 14px;
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .page-hero h1 {
      margin-bottom: 16px;
    }
    .page-hero .hero-sub {
      font-size: 1.05rem;
      color: var(--text-secondary);
      max-width: 560px;
      margin-bottom: 24px;
    }
    .hero-actions {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      font-weight: 600;
      cursor: pointer;
      text-decoration: none;
      transition: all var(--transition);
      border: 1px solid transparent;
      line-height: 1.4;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }
    .btn-primary:hover,
    .btn-primary:focus {
      background: var(--primary-dark);
      border-color: var(--primary-dark);
      color: #fff;
    }
    .btn-primary:active {
      transform: scale(0.98);
    }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-outline:hover,
    .btn-outline:focus {
      background: var(--primary-light);
      color: var(--primary-dark);
      border-color: var(--primary-dark);
    }
    .btn-outline:active {
      background: #D6E4F2;
      transform: scale(0.98);
    }
    .btn-sm {
      padding: 7px 16px;
      font-size: 0.85rem;
    }
    .btn-accent {
      background: var(--accent);
      color: var(--text);
      border-color: var(--accent);
    }
    .btn-accent:hover {
      background: #D89A2E;
      color: var(--text);
      border-color: #D89A2E;
    }

    /* Step guide */
    .step-guide {
      background: var(--bg-white);
      padding: 48px 0;
    }
    .step-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      padding: 20px 18px;
      height: 100%;
      transition: box-shadow var(--transition), transform var(--transition);
      position: relative;
    }
    .step-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .step-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      color: #fff;
      border-radius: 50%;
      font-weight: 700;
      font-size: 0.85rem;
      margin-bottom: 10px;
    }
    .step-connector {
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-muted);
      font-size: 1.1rem;
    }
    .step-title {
      font-weight: 700;
      font-size: 1rem;
      margin-bottom: 6px;
      color: var(--text);
    }
    .step-desc {
      font-size: 0.85rem;
      color: var(--text-secondary);
      margin: 0;
    }

    /* Play cards */
    .play-card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 20px;
    }
    .play-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      padding: 20px;
      display: flex;
      flex-direction: column;
      gap: 8px;
      transition: box-shadow var(--transition), transform var(--transition);
    }
    .play-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
    }
    .play-card-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      margin-bottom: 6px;
    }
    .play-card h3 {
      font-size: 1.05rem;
      margin-bottom: 2px;
    }
    .play-card .play-badge {
      display: inline-block;
      background: rgba(229, 169, 61, 0.15);
      color: #9A6B14;
      padding: 2px 10px;
      border-radius: 12px;
      font-size: 0.7rem;
      font-weight: 600;
      margin-bottom: 4px;
    }
    .play-card p {
      font-size: 0.85rem;
      color: var(--text-secondary);
      margin: 0;
      flex: 1;
    }

    /* Sample image section */
    .sample-section {
      background: var(--bg);
    }
    .sample-image-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border);
    }
    .sample-image-wrap img {
      width: 100%;
      object-fit: cover;
      border-radius: 0;
    }

    /* Deep content */
    .deep-content-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      padding: 28px;
      border: 1px solid var(--border-light);
    }
    .deep-content-card h3 {
      margin-bottom: 12px;
    }
    .deep-content-card ul, .deep-content-card ol {
      padding-left: 1.5rem;
      margin-bottom: 1.25rem;
    }
    .deep-content-card li {
      margin-bottom: 6px;
    }

    /* Tips */
    .tip-box {
      background: var(--primary-light);
      border-left: 4px solid var(--primary);
      border-radius: var(--radius-sm);
      padding: 16px 20px;
      margin-bottom: 16px;
    }
    .tip-box strong {
      color: var(--primary);
    }
    .tip-icon {
      font-size: 1.2rem;
      color: var(--primary);
      margin-right: 6px;
    }

    /* FAQ */
    .faq-wrap {
      background: var(--bg-white);
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color var(--transition), box-shadow var(--transition);
    }
    .faq-item[open] {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .faq-item summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      padding: 16px 20px;
      font-weight: 600;
      font-size: 1rem;
      color: var(--text);
      list-style: none;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item summary .faq-icon {
      width: 24px;
      height: 24px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      transition: transform var(--transition);
      flex-shrink: 0;
      margin-left: 12px;
    }
    .faq-item[open] summary .faq-icon {
      transform: rotate(180deg);
    }
    .faq-answer {
      padding: 0 20px 16px;
      color: var(--text-secondary);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    /* CTA / Form */
    .cta-section {
      background: linear-gradient(135deg, #E8F1F9 0%, #F6F9FC 100%);
    }
    .cta-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
      padding: 32px;
      border: 1px solid var(--border);
    }
    .cta-form label {
      font-weight: 600;
      font-size: 0.9rem;
      color: var(--text);
      margin-bottom: 4px;
    }
    .cta-form input,
    .cta-form select,
    .cta-form textarea {
      border-radius: var(--radius-sm);
      border: 1px solid var(--border);
      background: var(--bg);
      padding: 10px 12px;
      font-size: 0.9rem;
      color: var(--text);
      font-family: var(--font-family);
      margin-bottom: 12px;
      transition: border-color var(--transition), box-shadow var(--transition);
      width: 100%;
    }
    .cta-form input:focus,
    .cta-form select:focus,
    .cta-form textarea:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(30, 111, 186, 0.15);
    }
    .cta-form textarea {
      min-height: 100px;
      resize: vertical;
    }

    /* Footer */
    .site-footer {
      background: #1B2A3A;
      color: #B8C7D3;
      padding: 40px 0 20px;
      font-size: 0.9rem;
    }
    .site-footer .container-main {
      padding-left: 16px;
      padding-right: 16px;
    }
    .footer-inner {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 28px;
    }
    .footer-brand .logo-text {
      color: #fff;
      font-weight: 700;
      font-size: 1.2rem;
      display: inline-block;
      margin-bottom: 8px;
    }
    .footer-brand p {
      font-size: 0.85rem;
      color: #9FB0BD;
      line-height: 1.7;
      margin-bottom: 0;
    }
    .site-footer h5 {
      color: #fff;
      font-size: 0.95rem;
      font-weight: 600;
      margin-bottom: 12px;
    }
    .site-footer a {
      display: block;
      color: #B8C7D3;
      font-size: 0.85rem;
      margin-bottom: 8px;
      text-decoration: none;
      transition: color var(--transition);
    }
    .site-footer a:hover {
      color: #fff;
    }
    .site-footer a.active {
      color: #fff;
      font-weight: 600;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 16px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      font-size: 0.8rem;
      color: #8FA3B5;
    }
    .footer-bottom p {
      margin: 0;
    }
    .footer-links {
      display: flex;
      gap: 8px;
      align-items: center;
    }
    .footer-links a {
      color: #B8C7D3;
      display: inline;
      margin-bottom: 0;
    }
    .footer-links a:hover {
      color: #fff;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .nav-desktop {
        display: none;
      }
      .nav-cta {
        display: none;
      }
      .hamburger-btn {
        display: block;
      }
      .bottom-tab-bar {
        display: block;
      }
      body {
        padding-bottom: 56px;
      }
      .footer-inner {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .page-hero {
        padding: 40px 0 32px;
      }
      .page-hero .hero-bg-image {
        width: 70%;
      }
      :root {
        --spacing-section: 56px;
      }
    }

    @media (max-width: 640px) {
      :root {
        --spacing-section: 40px;
      }
      .page-hero .hero-bg-image {
        width: 100%;
        opacity: 0.08;
      }
      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }
      .hero-actions .btn {
        width: 100%;
      }
      .step-guide .step-connector {
        display: none;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
      }
      .cta-card {
        padding: 20px;
      }
      .deep-content-card {
        padding: 18px;
      }
    }

    @media (max-width: 520px) {
      .bottom-tab-bar-inner {
        gap: 0;
      }
      .bottom-tab-item {
        font-size: 0.6rem;
        padding: 4px 6px;
      }
      .bottom-tab-item i {
        font-size: 1.05rem;
      }
      h1 {
        font-size: 1.7rem;
      }
    }

/* roulang page: category2 */
:root {
            --primary: #1E6FBA;
            --primary-dark: #0D5A9E;
            --primary-light: #E8F1F9;
            --accent: #E5A93D;
            --accent-red: #C8472B;
            --bg: #F6F9FC;
            --bg-white: #FFFFFF;
            --text: #1B2A3A;
            --text-secondary: #5A6B7D;
            --text-muted: #8A9AAE;
            --border: rgba(26, 60, 100, 0.08);
            --border-light: rgba(26, 60, 100, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 6px rgba(26, 60, 100, 0.05);
            --shadow-md: 0 2px 6px rgba(26, 60, 100, 0.05), 0 12px 28px rgba(26, 60, 100, 0.07);
            --shadow-lg: 0 4px 12px rgba(26, 60, 100, 0.08), 0 16px 36px rgba(26, 60, 100, 0.1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --spacing-section: 72px;
            --spacing-card: 24px;
            --transition: 180ms ease;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        .text-muted {
            color: var(--text-muted);
            font-size: 0.875rem;
        }

        .text-small {
            font-size: 0.875rem;
        }

        .text-bold {
            font-weight: 700;
            color: var(--text);
        }

        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        .section-padding {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        .section-padding-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }

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

        .section-header .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .section-header h2 {
            margin-bottom: 10px;
            font-size: clamp(1.35rem, 2.8vw, 1.9rem);
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
        }

        .section-header p {
            max-width: 640px;
            font-size: 0.95rem;
            margin-bottom: 0;
            color: var(--text-secondary);
        }

        .bg-white-section {
            background-color: var(--bg-white);
        }

        .bg-light-section {
            background-color: var(--bg);
        }

        /* Header / Navigation */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(26, 60, 100, 0.04);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0 16px;
            height: 64px;
            display: flex;
            align-items: center;
        }

        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding-left: 0;
            padding-right: 0;
            gap: 12px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text);
            text-decoration: none;
            white-space: nowrap;
            flex-shrink: 0;
        }

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

        .logo .logo-mark {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 2px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
        }

        .nav-desktop a {
            color: var(--text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            padding: 8px 11px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-desktop a:hover,
        .nav-desktop a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-desktop a.active {
            color: var(--primary);
            background: var(--primary-light);
            border-bottom: 2px solid var(--primary);
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
            font-weight: 600;
        }

        .nav-cta {
            display: flex;
            gap: 8px;
            align-items: center;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.5;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(30, 111, 186, 0.3);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: 0 2px 6px rgba(30, 111, 186, 0.25);
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }

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

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        .btn-accent:hover,
        .btn-accent:focus {
            background: #d99a2e;
            border-color: #d99a2e;
            color: #fff;
            box-shadow: 0 4px 12px rgba(229, 169, 61, 0.35);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 7px 16px;
            font-size: 0.85rem;
            border-radius: 6px;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.3rem;
            color: var(--text-secondary);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition), color var(--transition);
            flex-shrink: 0;
        }

        .hamburger-btn:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* Mobile drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
            z-index: 99;
            padding: 16px;
            flex-direction: column;
            gap: 4px;
        }

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

        .mobile-drawer a {
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
        }

        .mobile-drawer a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

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

        /* Bottom mobile tab nav */
        .mobile-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            z-index: 90;
            padding: 6px 4px;
            padding-bottom: calc(6px + env(safe-area-inset-bottom, 0px));
            justify-content: space-around;
            align-items: center;
        }

        .mobile-tab-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 0.7rem;
            color: var(--text-muted);
            text-decoration: none;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: color var(--transition), background-color var(--transition);
        }

        .mobile-tab-nav a i {
            font-size: 1.2rem;
        }

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

        /* Hero */
        .hero {
            min-height: 70vh;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(135deg, #F0F7FD 0%, #E3EEF9 55%, #F6F9FC 100%);
            overflow: hidden;
            padding: 64px 0;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            opacity: 0.06;
            z-index: 0;
            pointer-events: none;
        }

        .hero .container-main {
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 700;
            color: var(--text);
            line-height: 1.35;
            margin-bottom: 18px;
        }

        .hero .hero-sub {
            font-size: clamp(1rem, 1.8vw, 1.2rem);
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 28px;
            line-height: 1.7;
        }

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

        .hero-stats {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 32px;
        }

        .hero-stat {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 22px;
            box-shadow: var(--shadow-sm);
            min-width: 140px;
            flex: 1 1 0;
        }

        .hero-stat .stat-num {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }

        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 2px;
        }

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

        .breadcrumb .container-main {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }

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

        .breadcrumb .separator {
            color: var(--text-muted);
            font-size: 0.75rem;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* News list */
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
            margin-bottom: 16px;
            overflow: hidden;
        }

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

        .news-card .news-img {
            flex: 0 0 220px;
            height: 145px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--primary-light);
        }

        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
            transition: transform var(--transition);
        }

        .news-card:hover .news-img img {
            transform: scale(1.04);
        }

        .news-card .news-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .news-card .news-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .news-card .news-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
            transition: color var(--transition);
        }

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

        .news-card .news-excerpt {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .read-more {
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition), color var(--transition);
        }

        .news-card .read-more i {
            font-size: 0.75rem;
            transition: transform var(--transition);
        }

        .news-card .read-more:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        .news-card .read-more:hover i {
            transform: translateX(3px);
        }

        /* News type filter */
        .news-filter {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .news-filter .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-white);
            border: 1px solid var(--border);
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }

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

        .news-filter .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* Sidebar */
        .sidebar-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 20px;
        }

        .sidebar-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-light);
        }

        .sidebar-news-item {
            display: flex;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            transition: background-color var(--transition);
            border-radius: var(--radius-sm);
        }

        .sidebar-news-item:last-child {
            border-bottom: none;
        }

        .sidebar-news-item:hover {
            background: var(--primary-light);
            padding-left: 8px;
        }

        .sidebar-news-item img {
            width: 76px;
            height: 52px;
            object-fit: cover;
            border-radius: 6px;
            flex-shrink: 0;
        }

        .sidebar-news-item .side-info {
            flex: 1;
        }

        .sidebar-news-item .side-title {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }

        .sidebar-news-item:hover .side-title {
            color: var(--primary);
        }

        .sidebar-news-item .side-date {
            font-size: 0.7rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud a {
            display: inline-flex;
            padding: 5px 14px;
            border-radius: 16px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .tag-cloud a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* Pagination */
        .pagination-section {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
            padding: 20px 0 8px;
        }

        .pagination-section a,
        .pagination-section span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 10px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-white);
            border: 1px solid var(--border);
            transition: all var(--transition);
            text-decoration: none;
        }

        .pagination-section a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .pagination-section .current {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .pagination-section .disabled {
            opacity: 0.45;
            pointer-events: none;
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-section h3 {
            color: #fff;
            font-size: clamp(1.3rem, 2vw, 1.7rem);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.95rem;
            margin-bottom: 0;
            max-width: 480px;
        }

        .cta-section .btn-accent {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            font-size: 1rem;
            padding: 13px 28px;
            border-radius: var(--radius-md);
        }

        .cta-section .btn-accent:hover {
            background: #d99a2e;
            border-color: #d99a2e;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .faq-item.active {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            transition: color var(--transition);
            user-select: none;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            transition: transform var(--transition), background-color var(--transition), color var(--transition);
        }

        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 280ms ease, padding 280ms ease;
            padding: 0 22px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Form */
        .form-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 28px;
        }

        .form-card label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            display: block;
        }

        .form-card input,
        .form-card select,
        .form-card textarea {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            background: var(--bg);
            color: var(--text);
            transition: border-color var(--transition), box-shadow var(--transition);
            font-family: inherit;
        }

        .form-card input:focus,
        .form-card select:focus,
        .form-card textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 111, 186, 0.12);
            outline: none;
            background: #fff;
        }

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

        /* Footer */
        .site-footer {
            background: #1B2A3A;
            color: #C5D3E2;
            padding-top: 48px;
            padding-bottom: 20px;
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }

        .footer-brand .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: #A8BCCF;
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 340px;
        }

        .site-footer h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .site-footer a {
            color: #A8BCCF;
            font-size: 0.85rem;
            display: block;
            padding: 5px 0;
            text-decoration: none;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px 24px;
            align-items: center;
            justify-content: space-between;
            font-size: 0.75rem;
            color: #8FA3B5;
        }

        .footer-bottom p {
            margin-bottom: 0;
        }

        .footer-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .footer-links a {
            font-size: 0.75rem;
            padding: 0;
            color: #A8BCCF;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }

            .footer-brand {
                grid-column: span 2;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
            }

            .site-header .container-main {
                gap: 8px;
            }

            .nav-desktop {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .hamburger-btn {
                display: block;
            }

            .mobile-tab-nav {
                display: flex;
            }

            body {
                padding-bottom: 60px;
            }

            .hero {
                min-height: auto;
                padding: 48px 0 40px;
            }

            .hero-stats {
                flex-direction: column;
            }

            .hero-stat {
                min-width: 100%;
            }

            .news-card {
                flex-direction: column;
            }

            .news-card .news-img {
                flex: 0 0 100%;
                width: 100%;
                height: 170px;
            }

            .cta-section {
                flex-direction: column;
                text-align: center;
                padding: 32px 20px;
            }

            .footer-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-brand {
                grid-column: span 1;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }

            .pagination-section {
                flex-wrap: wrap;
            }
        }

        @media (max-width: 520px) {
            :root {
                --spacing-section: 36px;
            }

            .section-padding {
                padding-top: 36px;
                padding-bottom: 36px;
            }

            .hero h1 {
                font-size: 1.5rem;
            }

            .hero .hero-sub {
                font-size: 0.95rem;
            }

            .news-card .news-title {
                font-size: 0.98rem;
            }

            .news-card .news-excerpt {
                font-size: 0.85rem;
                -webkit-line-clamp: 2;
            }

            .sidebar-card {
                padding: 16px;
            }

            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }

            .faq-answer p {
                font-size: 0.85rem;
            }

            .form-card {
                padding: 20px;
            }

            .site-header {
                height: 56px;
                padding: 0 12px;
            }

            .logo {
                font-size: 1rem;
            }

            .logo .logo-mark {
                width: 28px;
                height: 28px;
                font-size: 0.8rem;
            }

            .mobile-drawer {
                top: 56px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1E6FBA;
            --primary-dark: #0D5A9E;
            --primary-light: #E8F1F9;
            --accent: #E5A93D;
            --accent-red: #C8472B;
            --bg: #F6F9FC;
            --bg-white: #FFFFFF;
            --text: #1B2A3A;
            --text-secondary: #5A6B7D;
            --text-muted: #8A9AAE;
            --border: rgba(26, 60, 100, 0.08);
            --border-light: rgba(26, 60, 100, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 6px rgba(26, 60, 100, 0.05);
            --shadow-md: 0 2px 6px rgba(26, 60, 100, 0.05), 0 12px 28px rgba(26, 60, 100, 0.07);
            --shadow-lg: 0 4px 12px rgba(26, 60, 100, 0.08), 0 16px 36px rgba(26, 60, 100, 0.1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --spacing-section: 72px;
            --spacing-card: 24px;
            --transition: 180ms ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        .text-muted {
            color: var(--text-muted);
            font-size: 0.875rem;
        }
        .text-small {
            font-size: 0.875rem;
        }
        .text-bold {
            font-weight: 700;
            color: var(--text);
        }
        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }
        .section-padding {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }
        .section-padding-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }
        .section-header {
            margin-bottom: 32px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .section-header h2 {
            margin-bottom: 10px;
            color: var(--text);
        }
        .section-header p {
            max-width: 640px;
            font-size: 0.95rem;
            margin-bottom: 0;
            color: var(--text-secondary);
        }
        .bg-white-section {
            background-color: var(--bg-white);
        }
        .bg-light-section {
            background-color: var(--bg);
        }
        /* Header / Navigation */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(26, 60, 100, 0.04);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0 16px;
            height: 64px;
            display: flex;
            align-items: center;
        }
        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding-left: 0;
            padding-right: 0;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text);
            text-decoration: none;
            white-space: nowrap;
        }
        .logo:hover,
        .logo:focus {
            color: var(--primary);
        }
        .logo .logo-mark {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-desktop a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition);
            white-space: nowrap;
        }
        .nav-desktop a:hover,
        .nav-desktop a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-desktop a.active {
            color: var(--primary);
            background: var(--primary-light);
            border-bottom: 2px solid var(--primary);
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        }
        .nav-cta {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-secondary);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition), color var(--transition);
        }
        .hamburger-btn:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        /* Mobile Drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
            z-index: 99;
            padding: 16px;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-drawer.open {
            display: flex;
        }
        .mobile-drawer a {
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
        }
        .mobile-drawer a:hover,
        .mobile-drawer a.active {
            background: var(--primary-light);
            color: var(--primary);
        }
        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
        }
        .btn-primary:active {
            background: #0a4a82;
            transform: scale(0.98);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--text);
            border-color: var(--accent);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: #d9992f;
            border-color: #d9992f;
            color: var(--text);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary-light);
            color: var(--primary);
        }
        .btn-sm {
            padding: 6px 16px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
        }
        /* Breadcrumb */
        .breadcrumb-nav {
            padding: 16px 0 8px;
            font-size: 0.875rem;
            color: var(--text-muted);
        }
        .breadcrumb-nav a {
            color: var(--text-secondary);
        }
        .breadcrumb-nav a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav .separator {
            margin: 0 8px;
            color: var(--text-muted);
        }
        .breadcrumb-nav .current {
            color: var(--primary);
            font-weight: 600;
        }
        /* Hero Banner */
        .category-hero {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(13, 90, 158, 0.92) 0%, rgba(30, 111, 186, 0.85) 60%, rgba(30, 111, 186, 0.7) 100%);
            margin-top: 16px;
        }
        .category-hero .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            z-index: 0;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 1;
            padding: 48px 40px;
            max-width: 720px;
        }
        .category-hero .hero-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            backdrop-filter: blur(4px);
        }
        .category-hero h1 {
            color: #fff;
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .category-hero p {
            color: rgba(255, 255, 255, 0.88);
            font-size: 1.05rem;
            margin-bottom: 0;
            max-width: 560px;
        }
        .category-hero .hero-meta {
            display: flex;
            gap: 24px;
            margin-top: 24px;
            flex-wrap: wrap;
        }
        .category-hero .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.875rem;
        }
        .category-hero .hero-meta-item i {
            font-size: 1rem;
            color: var(--accent);
        }
        /* Filter Section */
        .filter-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px 28px;
        }
        .filter-card .filter-label {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 6px;
            display: block;
        }
        .filter-card select,
        .filter-card input {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 0.9rem;
            background: var(--bg);
            color: var(--text);
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }
        .filter-card select:focus,
        .filter-card input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 111, 186, 0.15);
            outline: none;
        }
        /* Data Table */
        .table-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .table-card .table-header-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            border-bottom: 1px solid var(--border);
            flex-wrap: wrap;
            gap: 8px;
        }
        .table-card .table-header-bar h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0;
            color: var(--text);
        }
        .table-card .table-wrap {
            overflow-x: auto;
        }
        .table-card table {
            margin: 0;
            border-collapse: collapse;
            width: 100%;
            min-width: 600px;
        }
        .table-card table th {
            background: var(--primary-light);
            color: var(--text);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 12px 16px;
            text-align: left;
            white-space: nowrap;
            border-bottom: 1px solid var(--border);
        }
        .table-card table td {
            padding: 12px 16px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-light);
            white-space: nowrap;
        }
        .table-card table tr:hover td {
            background: var(--bg);
        }
        .table-card table .ball {
            display: inline-block;
            min-width: 28px;
            height: 28px;
            line-height: 28px;
            text-align: center;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 0.8rem;
            margin-right: 4px;
        }
        .table-card table .ball.special {
            background: var(--accent);
            color: #fff;
        }
        .table-card .example-tag {
            display: inline-block;
            background: #FFF7E6;
            color: #B8860B;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        /* Chart Cards */
        .chart-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px;
        }
        .chart-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }
        .chart-bars {
            display: flex;
            align-items: flex-end;
            gap: 8px;
            height: 180px;
            padding-top: 16px;
            border-bottom: 1px solid var(--border);
        }
        .chart-bars .bar-group {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
        }
        .chart-bars .bar {
            width: 100%;
            max-width: 36px;
            border-radius: 6px 6px 0 0;
            background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
            transition: all var(--transition);
            cursor: pointer;
            position: relative;
        }
        .chart-bars .bar:hover {
            background: linear-gradient(180deg, var(--primary-dark) 0%, var(--primary) 100%);
            transform: scaleY(1.02);
            transform-origin: bottom;
        }
        .chart-bars .bar.accent-bar {
            background: linear-gradient(180deg, var(--accent) 0%, #d9992f 100%);
        }
        .chart-bars .bar-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-weight: 600;
        }
        .chart-bars .bar-value {
            font-size: 0.75rem;
            color: var(--primary);
            font-weight: 700;
        }
        .chart-legend {
            display: flex;
            gap: 16px;
            margin-top: 16px;
            flex-wrap: wrap;
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        .chart-legend .legend-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            display: inline-block;
            margin-right: 6px;
        }
        /* Metric Cards */
        .metric-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 16px;
        }
        .metric-card-mini {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 20px 16px;
            text-align: center;
            transition: all var(--transition);
        }
        .metric-card-mini:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .metric-card-mini .metric-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .metric-card-mini .metric-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        .metric-card-mini .metric-icon {
            font-size: 1.5rem;
            color: var(--accent);
            margin-bottom: 8px;
        }
        /* Content Section */
        .content-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 32px 28px;
        }
        .content-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }
        .content-card h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 20px;
            margin-bottom: 8px;
        }
        .content-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 12px;
        }
        .content-card ul,
        .content-card ol {
            color: var(--text-secondary);
            font-size: 0.95rem;
            padding-left: 24px;
            margin-bottom: 12px;
        }
        .content-card li {
            margin-bottom: 6px;
        }
        .info-box {
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 16px 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        /* FAQ */
        .faq-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .faq-card.active {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 111, 186, 0.12), var(--shadow-md);
        }
        .faq-card .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            cursor: pointer;
            gap: 12px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            transition: color var(--transition);
        }
        .faq-card .faq-question:hover {
            color: var(--primary);
        }
        .faq-card .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 0.85rem;
            transition: transform var(--transition), background var(--transition);
        }
        .faq-card.active .faq-icon {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-card .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-card.active .faq-answer {
            max-height: 500px;
            padding: 0 24px 20px;
        }
        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            color: #fff;
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 32px;
            align-items: center;
        }
        .cta-section .cta-content h2 {
            color: #fff;
            font-size: clamp(1.35rem, 2vw, 1.8rem);
            margin-bottom: 12px;
        }
        .cta-section .cta-content p {
            color: rgba(255, 255, 255, 0.88);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        .cta-section .cta-form {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid rgba(255, 255, 255, 0.25);
        }
        .cta-section .cta-form label {
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.85rem;
            font-weight: 600;
        }
        .cta-section .cta-form input,
        .cta-section .cta-form select {
            background: rgba(255, 255, 255, 0.92);
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 0.9rem;
            width: 100%;
            color: var(--text);
        }
        .cta-section .cta-form input:focus,
        .cta-section .cta-form select:focus {
            border-color: var(--accent);
            outline: none;
            box-shadow: 0 0 0 3px rgba(229, 169, 61, 0.25);
        }
        /* Footer */
        .site-footer {
            background: #1B2A3A;
            color: rgba(255, 255, 255, 0.78);
            padding-top: 56px;
            padding-bottom: 32px;
            margin-top: 0;
        }
        .site-footer .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 12px;
            max-width: 360px;
        }
        .site-footer .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            display: block;
            margin-bottom: 8px;
            text-decoration: none;
            transition: color var(--transition);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.55);
        }
        .site-footer .footer-bottom p {
            margin-bottom: 6px;
        }
        .site-footer .footer-links {
            display: flex;
            gap: 8px;
            justify-content: center;
            align-items: center;
            font-size: 0.85rem;
        }
        .site-footer .footer-links a {
            display: inline;
            margin-bottom: 0;
            color: rgba(255, 255, 255, 0.65);
        }
        .site-footer .footer-links a:hover {
            color: #fff;
        }
        /* Bottom Tab Nav (Mobile) */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            box-shadow: 0 -2px 12px rgba(26, 60, 100, 0.08);
            z-index: 98;
            padding: 6px 8px env(safe-area-inset-bottom);
            justify-content: space-around;
            align-items: flex-start;
        }
        .bottom-tab-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 0.68rem;
            color: var(--text-muted);
            text-decoration: none;
            padding: 6px 4px 4px;
            border-radius: var(--radius-sm);
            transition: color var(--transition), background var(--transition);
            flex: 1;
            text-align: center;
        }
        .bottom-tab-nav a i {
            font-size: 1.2rem;
        }
        .bottom-tab-nav a.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .bottom-tab-nav a:hover {
            color: var(--primary);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .bottom-tab-nav {
                display: flex;
            }
            body {
                padding-bottom: 60px;
            }
            .cta-section {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .hamburger-btn {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .nav-cta .btn {
                display: none;
            }
            :root {
                --spacing-section: 40px;
            }
            .category-hero {
                min-height: 320px;
            }
            .category-hero .hero-content {
                padding: 32px 24px;
            }
            .metric-grid {
                grid-template-columns: 1fr 1fr;
            }
            .site-footer .footer-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .chart-bars {
                height: 140px;
                gap: 4px;
            }
            .chart-bars .bar {
                max-width: 24px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --spacing-section: 32px;
            }
            .category-hero {
                min-height: 280px;
                border-radius: var(--radius-md);
            }
            .category-hero .hero-content {
                padding: 24px 16px;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .category-hero p {
                font-size: 0.9rem;
            }
            .filter-card {
                padding: 16px;
            }
            .table-card .table-header-bar {
                padding: 12px 16px;
                flex-direction: column;
                align-items: flex-start;
            }
            .metric-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                padding: 32px 20px;
                border-radius: var(--radius-md);
            }
            .cta-section .cta-form {
                padding: 16px;
            }
            .content-card {
                padding: 20px 16px;
            }
            .chart-card {
                padding: 16px;
            }
            .chart-bars {
                height: 120px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #1E6FBA;
            --primary-dark: #0D5A9E;
            --primary-light: #E8F1F9;
            --accent: #E5A93D;
            --accent-red: #C8472B;
            --bg: #F6F9FC;
            --bg-white: #FFFFFF;
            --text: #1B2A3A;
            --text-secondary: #5A6B7D;
            --text-muted: #8A9AAE;
            --border: rgba(26, 60, 100, 0.08);
            --border-light: rgba(26, 60, 100, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 6px rgba(26, 60, 100, 0.05);
            --shadow-md: 0 2px 6px rgba(26, 60, 100, 0.05), 0 12px 28px rgba(26, 60, 100, 0.07);
            --shadow-lg: 0 4px 12px rgba(26, 60, 100, 0.08), 0 16px 36px rgba(26, 60, 100, 0.1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --spacing-section: 72px;
            --spacing-card: 24px;
            --transition: 180ms ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            padding-bottom: 60px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        .text-muted {
            color: var(--text-muted);
            font-size: 0.875rem;
        }
        .text-small {
            font-size: 0.875rem;
        }
        .text-bold {
            font-weight: 700;
            color: var(--text);
        }
        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }
        .section-padding {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }
        .section-padding-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }
        .section-header {
            margin-bottom: 32px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .section-header h2 {
            margin-bottom: 10px;
        }
        .section-header p {
            max-width: 640px;
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        .bg-white-section {
            background-color: var(--bg-white);
        }
        .bg-light-section {
            background-color: var(--bg);
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text);
            font-weight: 700;
            line-height: 1.35;
        }
        h1 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            margin-bottom: 16px;
        }
        h2 {
            font-size: clamp(1.35rem, 2.8vw, 1.9rem);
            margin-bottom: 12px;
        }
        h3 {
            font-size: clamp(1.1rem, 2vw, 1.35rem);
            font-weight: 600;
            margin-bottom: 8px;
        }
        p {
            margin-bottom: 1.25em;
            font-size: 1rem;
            line-height: 1.8;
        }
        ul,
        ol {
            line-height: 1.8;
            padding-left: 1.5em;
            margin-bottom: 1.25em;
        }
        li {
            margin-bottom: 0.5em;
        }

        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(26, 60, 100, 0.04);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0 16px;
            height: 64px;
            display: flex;
            align-items: center;
        }
        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding-left: 0;
            padding-right: 0;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text);
            text-decoration: none;
            white-space: nowrap;
        }
        .logo:hover,
        .logo:focus {
            color: var(--primary);
        }
        .logo .logo-mark {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-desktop a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition);
            white-space: nowrap;
        }
        .nav-desktop a:hover,
        .nav-desktop a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-desktop a.active {
            color: var(--primary);
            background: var(--primary-light);
            border-bottom: 2px solid var(--primary);
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        }
        .nav-cta {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.3rem;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition);
        }
        .hamburger-btn:hover {
            background: var(--primary-light);
        }
        .mobile-drawer {
            display: none;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 16px;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-drawer.open {
            display: flex;
        }
        .mobile-drawer a {
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: background-color var(--transition), color var(--transition);
        }
        .mobile-drawer a:hover,
        .mobile-drawer a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }
        .mobile-drawer a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 99;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            box-shadow: 0 -2px 8px rgba(26, 60, 100, 0.08);
            padding: 8px 4px;
            padding-bottom: calc(8px + env(safe-area-inset-bottom));
            display: flex;
            justify-content: space-around;
            align-items: center;
        }
        .mobile-tab-bar a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            color: var(--text-muted);
            font-size: 0.7rem;
            text-decoration: none;
            font-weight: 500;
            transition: color var(--transition);
            flex: 1;
            min-width: 0;
            padding: 4px 2px;
        }
        .mobile-tab-bar a i {
            font-size: 1.2rem;
        }
        .mobile-tab-bar a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .mobile-tab-bar a:hover {
            color: var(--primary);
        }

        .breadcrumb-nav {
            background: var(--bg);
            padding: 14px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb-nav .container-main {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb-nav a:hover {
            color: var(--primary-dark);
        }
        .breadcrumb-nav .separator {
            color: var(--text-muted);
            font-size: 0.7rem;
        }
        .breadcrumb-nav .current {
            color: var(--text-secondary);
            font-weight: 500;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            border: 2px solid transparent;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn:hover {
            text-decoration: none;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
        }
        .btn-primary:active {
            background: #0B4A82;
            border-color: #0B4A82;
            transform: scale(0.98);
            color: #fff;
        }
        .btn-accent {
            background: var(--accent);
            color: var(--text);
            border-color: var(--accent);
        }
        .btn-accent:hover {
            background: #D99A2E;
            border-color: #D99A2E;
            color: var(--text);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
        }
        .btn .arrow {
            transition: transform var(--transition);
            display: inline-block;
        }
        .btn:hover .arrow {
            transform: translateX(3px);
        }

        .hero-inner {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
            padding: 48px 40px;
        }
        .hero-inner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(246, 249, 252, 0.95) 0%, rgba(246, 249, 252, 0.85) 40%, rgba(30, 111, 186, 0.35) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
        }
        .hero-content .hero-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .hero-content h1 {
            color: var(--text);
            margin-bottom: 16px;
        }
        .hero-content p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
            max-width: 540px;
        }
        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .hero-stats {
            position: relative;
            z-index: 2;
            display: flex;
            gap: 12px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .hero-stat {
            background: rgba(255, 255, 255, 0.9);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
            min-width: 120px;
            text-align: center;
        }
        .hero-stat .stat-num {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            display: block;
        }
        .hero-stat .stat-label {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        .metric-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .metric-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .metric-card .metric-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.3rem;
            margin: 0 auto 12px;
        }
        .metric-card .metric-num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .metric-card .metric-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        .metric-card .metric-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 8px;
        }

        .timeline-section {
            position: relative;
        }
        .timeline {
            position: relative;
            padding-left: 32px;
            max-width: 760px;
            margin: 0 auto;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary) 0%, var(--primary-light) 80%, transparent);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 28px;
            padding-left: 24px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 8px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 3px solid var(--primary);
            box-shadow: 0 0 0 4px rgba(30, 111, 186, 0.12);
        }
        .timeline-item .time-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 16px;
            margin-bottom: 6px;
        }
        .timeline-item h3 {
            font-size: 1.05rem;
            margin-bottom: 4px;
        }
        .timeline-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .tool-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
        }
        .tool-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .tool-card .tool-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--primary-light) 0%, #D0E4F5 100%);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 16px;
        }
        .tool-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .tool-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .analysis-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            border-left: 4px solid var(--primary);
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
        }
        .analysis-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(3px);
        }
        .analysis-card .analysis-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .analysis-card .analysis-title i {
            color: var(--primary);
            font-size: 1rem;
        }
        .analysis-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .analysis-card .analysis-badge {
            display: inline-block;
            background: #FFF8E8;
            color: #B87C10;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 12px;
            margin-top: 10px;
        }

        .deep-content {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .deep-content h2 {
            margin-bottom: 24px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
        }
        .deep-content h3 {
            margin-top: 28px;
            margin-bottom: 12px;
            color: var(--primary-dark);
        }
        .deep-content p {
            font-size: 0.95rem;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .deep-content ul {
            color: var(--text-secondary);
        }
        .deep-content .tip-box {
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            margin: 20px 0;
            font-size: 0.9rem;
            color: var(--text);
        }
        .deep-content .tip-box strong {
            color: var(--primary-dark);
        }

        .data-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            background: var(--bg-white);
        }
        .data-table-wrap table {
            margin: 0;
            border-collapse: collapse;
            width: 100%;
            min-width: 600px;
            font-size: 0.9rem;
        }
        .data-table-wrap table th {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 600;
            padding: 12px 16px;
            text-align: left;
            font-size: 0.85rem;
            border-bottom: 2px solid var(--border);
            white-space: nowrap;
        }
        .data-table-wrap table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .data-table-wrap table tr:last-child td {
            border-bottom: none;
        }
        .data-table-wrap table tr:hover td {
            background: rgba(30, 111, 186, 0.03);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .faq-item.active {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-family);
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            transition: background-color var(--transition);
        }
        .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-question .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: 0.8rem;
            transition: transform var(--transition);
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease;
            padding: 0 20px;
            font-size: 0.95rem;
            line-height: 1.7;
            color: var(--text-secondary);
        }
        .faq-item.active .faq-answer {
            max-height: 500px;
            padding-bottom: 16px;
        }
        .faq-answer p {
            font-size: 0.95rem;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .cta-form-section .form-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
        }
        .cta-form-section .form-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
            display: block;
        }
        .cta-form-section .form-input {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-family: var(--font-family);
            color: var(--text);
            background: #FAFCFE;
            transition: border-color var(--transition), box-shadow var(--transition);
            margin-bottom: 16px;
        }
        .cta-form-section .form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 111, 186, 0.1);
            outline: none;
        }
        .cta-form-section .cta-info {
            padding-right: 24px;
        }
        .cta-form-section .cta-info h2 {
            margin-bottom: 12px;
        }
        .cta-form-section .cta-info p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .cta-form-section .cta-benefits {
            list-style: none;
            padding-left: 0;
            margin-top: 16px;
        }
        .cta-form-section .cta-benefits li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .cta-form-section .cta-benefits li i {
            color: var(--primary);
            font-size: 0.9rem;
        }

        .site-footer {
            background: #1B2A3A;
            color: #C5D4E3;
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        .site-footer .footer-inner {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 8px;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: #A0B0C0;
            line-height: 1.7;
            max-width: 340px;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .site-footer a {
            color: #A0B0C0;
            font-size: 0.9rem;
            display: block;
            margin-bottom: 6px;
            text-decoration: none;
            transition: color var(--transition);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .site-footer a.active {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.85rem;
            color: #8FA3B5;
        }
        .footer-bottom p {
            margin: 0;
            font-size: 0.85rem;
        }
        .footer-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .footer-links a {
            display: inline;
            color: #8FA3B5;
        }
        .footer-links a:hover {
            color: #fff;
        }

        @media (max-width: 1024px) {
            .nav-desktop {
                gap: 0;
            }
            .nav-desktop a {
                padding: 8px 8px;
                font-size: 0.85rem;
            }
            .nav-cta {
                display: none;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
            }
            body {
                padding-bottom: 64px;
            }
            .site-header {
                height: 56px;
            }
            .nav-desktop {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .mobile-tab-bar {
                display: flex;
            }
            .hero-inner {
                min-height: auto;
                padding: 32px 20px;
                background-position: right center;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-stats {
                gap: 8px;
            }
            .hero-stat {
                min-width: 90px;
                padding: 12px 14px;
            }
            .hero-stat .stat-num {
                font-size: 1.2rem;
            }
            .deep-content {
                padding: 24px 18px;
            }
            .cta-form-section .cta-info {
                padding-right: 0;
                margin-bottom: 24px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .footer-bottom p {
                text-align: center;
            }
            .timeline {
                padding-left: 28px;
            }
            .timeline::before {
                left: 10px;
            }
            .timeline-item::before {
                left: -22px;
                width: 12px;
                height: 12px;
                top: 10px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --spacing-section: 36px;
            }
            .container-main {
                padding-left: 12px;
                padding-right: 12px;
            }
            .hero-inner {
                padding: 24px 16px;
                border-radius: var(--radius-md);
            }
            .hero-content h1 {
                font-size: 1.4rem;
            }
            .hero-content p {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
                gap: 8px;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 6px;
            }
            .hero-stat {
                min-width: 70px;
                padding: 10px 10px;
            }
            .hero-stat .stat-num {
                font-size: 1rem;
            }
            .hero-stat .stat-label {
                font-size: 0.7rem;
            }
            .deep-content {
                padding: 20px 14px;
            }
            .data-table-wrap table {
                min-width: 480px;
                font-size: 0.8rem;
            }
            .data-table-wrap table th,
            .data-table-wrap table td {
                padding: 8px 10px;
            }
            .tool-card {
                padding: 20px 16px;
            }
            .analysis-card {
                padding: 18px 14px;
            }
            .faq-question {
                padding: 14px 14px;
                font-size: 0.95rem;
            }
            .faq-answer {
                font-size: 0.9rem;
                padding: 0 14px;
            }
            .cta-form-section .form-card {
                padding: 24px 18px;
            }
            .site-footer {
                padding: 32px 0 16px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #1E6FBA;
            --primary-dark: #0D5A9E;
            --primary-light: #E8F1F9;
            --accent: #E5A93D;
            --accent-red: #C8472B;
            --bg: #F6F9FC;
            --bg-white: #FFFFFF;
            --text: #1B2A3A;
            --text-secondary: #5A6B7D;
            --text-muted: #8A9AAE;
            --border: rgba(26, 60, 100, 0.08);
            --border-light: rgba(26, 60, 100, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 6px rgba(26, 60, 100, 0.05);
            --shadow-md: 0 2px 6px rgba(26, 60, 100, 0.05), 0 12px 28px rgba(26, 60, 100, 0.07);
            --shadow-lg: 0 4px 12px rgba(26, 60, 100, 0.08), 0 16px 36px rgba(26, 60, 100, 0.1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --spacing-section: 72px;
            --spacing-card: 24px;
            --transition: 180ms ease;
        }

        @media (max-width: 1024px) {
            :root { --spacing-section: 56px; }
        }
        @media (max-width: 640px) {
            :root { --spacing-section: 40px; }
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition);
        }
        a:hover, a:focus {
            color: var(--primary-dark);
        }
        a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        .text-muted { color: var(--text-muted); font-size: 0.875rem; }
        .text-small { font-size: 0.875rem; }
        .text-bold { font-weight: 700; color: var(--text); }

        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        .section-padding { padding-top: var(--spacing-section); padding-bottom: var(--spacing-section); }
        .section-padding-sm { padding-top: 48px; padding-bottom: 48px; }

        .section-header {
            margin-bottom: 32px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .section-header h2 {
            margin-bottom: 10px;
            color: var(--text);
            font-weight: 700;
        }
        .section-header p {
            max-width: 640px;
            font-size: 0.95rem;
            margin-bottom: 0;
            color: var(--text-secondary);
        }

        .bg-white-section { background-color: var(--bg-white); }
        .bg-light-section { background-color: var(--bg); }

        h1, h2, h3, h4, h5 {
            font-family: var(--font-family);
            color: var(--text);
            line-height: 1.4;
            margin-top: 0;
        }
        h1 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); font-weight: 700; }
        h2 { font-size: clamp(1.35rem, 2.8vw, 1.9rem); font-weight: 700; }
        h3 { font-size: clamp(1.1rem, 2vw, 1.35rem); font-weight: 600; }
        p { margin-bottom: 1.25rem; }

        /* Header / Navigation */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(26, 60, 100, 0.04);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0 16px;
            height: 64px;
            display: flex;
            align-items: center;
        }
        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding-left: 0;
            padding-right: 0;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text);
            text-decoration: none;
            white-space: nowrap;
        }
        .logo:hover, .logo:focus { color: var(--primary); }
        .logo .logo-mark {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-desktop a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition);
            white-space: nowrap;
        }
        .nav-desktop a:hover, .nav-desktop a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-desktop a.active {
            color: var(--primary);
            background: var(--primary-light);
            border-bottom: 2px solid var(--primary);
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        }
        .nav-cta {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .hamburger-btn {
            display: none;
            background: transparent;
            border: none;
            font-size: 1.3rem;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition);
        }
        .hamburger-btn:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-family);
            font-size: 0.95rem;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
        }
        .btn-primary:hover, .btn-primary:focus {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(30, 111, 186, 0.25);
        }
        .btn-primary:active {
            transform: scale(0.97);
            background-color: #0A4E8A;
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-secondary:hover, .btn-secondary:focus {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .btn-accent {
            background-color: var(--accent);
            color: #1B2A3A;
            border: 1px solid var(--accent);
        }
        .btn-accent:hover, .btn-accent:focus {
            background-color: #D4992F;
            border-color: #D4992F;
            color: #1B2A3A;
            box-shadow: 0 4px 14px rgba(229, 169, 61, 0.3);
        }
        .btn-sm {
            padding: 7px 16px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
        }
        .breadcrumb-bar .container-main {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            flex-wrap: wrap;
        }
        .breadcrumb-bar a {
            color: var(--text-secondary);
            font-weight: 500;
        }
        .breadcrumb-bar a:hover {
            color: var(--primary);
        }
        .breadcrumb-bar .separator {
            color: var(--text-muted);
            font-size: 0.8rem;
        }
        .breadcrumb-bar .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Hero Banner */
        .category-hero {
            background: linear-gradient(135deg, #E8F1F9 0%, #F6F9FC 45%, #FFFFFF 100%);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(30, 111, 186, 0.06);
            z-index: 0;
        }
        .category-hero .container-main {
            position: relative;
            z-index: 1;
        }
        .category-hero h1 {
            margin-bottom: 14px;
            color: var(--text);
            font-weight: 700;
        }
        .category-hero .lead {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 720px;
            margin-bottom: 24px;
            line-height: 1.8;
        }
        .category-hero .hero-meta {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            align-items: center;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 6px 16px;
            font-size: 0.82rem;
            color: var(--text-secondary);
            font-weight: 500;
            box-shadow: var(--shadow-sm);
        }
        .category-hero .hero-badge i {
            color: var(--accent);
        }
        .hero-image-wrapper {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            margin-top: 28px;
            position: relative;
        }
        .hero-image-wrapper img {
            width: 100%;
            height: auto;
            object-fit: cover;
            max-height: 360px;
            border-radius: var(--radius-lg);
        }
        .hero-image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(27, 42, 58, 0.75) 0%, transparent 100%);
            padding: 48px 24px 20px;
            color: #fff;
        }
        .hero-image-overlay p {
            margin: 0;
            font-size: 0.95rem;
            font-weight: 500;
            color: #fff;
        }

        /* Knowledge Cards (Expandable) */
        .knowledge-card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        @media (max-width: 768px) {
            .knowledge-card-grid { grid-template-columns: 1fr; }
        }
        .knowledge-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--transition), border-color var(--transition);
        }
        .knowledge-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(30, 111, 186, 0.2);
        }
        .knowledge-card-header {
            padding: 20px 24px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            user-select: none;
            transition: background-color var(--transition);
        }
        .knowledge-card-header:hover {
            background: var(--primary-light);
        }
        .knowledge-card-header .card-title-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .knowledge-card-header .card-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1rem;
            flex-shrink: 0;
        }
        .knowledge-card-header h3 {
            margin: 0;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
        }
        .knowledge-card-header .toggle-icon {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .knowledge-card.open .knowledge-card-header .toggle-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .knowledge-card-body {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease, padding 300ms ease;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .knowledge-card.open .knowledge-card-body {
            max-height: 400px;
            padding: 20px 24px;
        }
        .knowledge-card-body ul {
            margin: 0;
            padding-left: 20px;
            list-style: none;
        }
        .knowledge-card-body ul li {
            position: relative;
            padding-left: 16px;
            margin-bottom: 8px;
        }
        .knowledge-card-body ul li::before {
            content: '·';
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: 700;
        }

        /* Long-form article sections */
        .article-block {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 32px 36px;
            margin-bottom: 28px;
        }
        @media (max-width: 640px) {
            .article-block { padding: 20px; }
        }
        .article-block h2 {
            color: var(--text);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
        }
        .article-block h3 {
            color: var(--primary);
            font-size: 1.1rem;
            margin-top: 24px;
            margin-bottom: 10px;
        }
        .article-block p {
            color: var(--text-secondary);
            line-height: 1.8;
            font-size: 0.95rem;
        }
        .article-block ul, .article-block ol {
            padding-left: 22px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 16px;
        }
        .article-block ul li, .article-block ol li {
            margin-bottom: 6px;
        }
        .article-highlight-box {
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            padding: 16px 20px;
            margin: 16px 0;
            font-size: 0.9rem;
            color: var(--text);
        }
        .article-highlight-box strong {
            color: var(--primary-dark);
        }

        /* Related Reading */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        @media (max-width: 768px) {
            .related-grid { grid-template-columns: 1fr; }
        }
        .related-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .related-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .related-body {
            padding: 18px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .related-card h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
            line-height: 1.5;
        }
        .related-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
            flex: 1;
        }
        .related-card .read-more {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .related-card .read-more i {
            transition: transform var(--transition);
        }
        .related-card .read-more:hover i {
            transform: translateX(3px);
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #2A7BC8 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            color: #fff;
            box-shadow: var(--shadow-lg);
            margin-top: 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .cta-section { flex-direction: column; text-align: center; padding: 32px 24px; }
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: 8px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 0;
            font-size: 0.95rem;
            max-width: 480px;
        }
        .cta-section .btn {
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background: #1B2A3A;
            color: #C7D2DE;
            padding: 48px 0 24px;
            margin-top: var(--spacing-section);
        }
        .site-footer .container-main {
            max-width: 1200px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        @media (max-width: 768px) {
            .footer-inner { grid-template-columns: 1fr; gap: 24px; }
        }
        .footer-brand .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: #8FA3B5;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .site-footer a {
            display: block;
            color: #8FA3B5;
            font-size: 0.85rem;
            margin-bottom: 8px;
            transition: color var(--transition);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: #8FA3B5;
        }
        .footer-bottom p {
            margin: 0;
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a {
            color: #8FA3B5;
            margin-bottom: 0;
        }
        .footer-links a:hover {
            color: #fff;
        }

        /* Mobile Bottom Tab */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            z-index: 90;
            padding-bottom: env(safe-area-inset-bottom);
            box-shadow: 0 -2px 12px rgba(26, 60, 100, 0.08);
        }
        .bottom-tab-nav .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding: 8px 4px;
        }
        .bottom-tab-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 0.65rem;
            color: var(--text-muted);
            font-weight: 500;
            text-decoration: none;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: color var(--transition);
            flex: 1;
            max-width: 80px;
        }
        .bottom-tab-nav a i {
            font-size: 1.15rem;
            margin-bottom: 2px;
        }
        .bottom-tab-nav a:hover, .bottom-tab-nav a:focus {
            color: var(--primary);
        }
        .bottom-tab-nav a.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        /* Mobile Drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(27, 42, 58, 0.55);
            z-index: 95;
            opacity: 0;
            pointer-events: none;
            transition: opacity 200ms ease;
        }
        .mobile-drawer.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-drawer .drawer-panel {
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            padding: 16px;
            max-height: 70vh;
            overflow-y: auto;
            box-shadow: var(--shadow-lg);
        }
        .mobile-drawer .drawer-panel a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: background-color var(--transition), color var(--transition);
        }
        .mobile-drawer .drawer-panel a:hover, .mobile-drawer .drawer-panel a:focus {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-drawer .drawer-panel a.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-desktop { gap: 2px; }
            .nav-desktop a { font-size: 0.82rem; padding: 6px 8px; }
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .nav-cta { display: none; }
            .hamburger-btn { display: flex; align-items: center; justify-content: center; }
            .bottom-tab-nav { display: block; }
            .mobile-drawer { display: block; }
            .site-header { height: 56px; }
            body { padding-bottom: 64px; }
            .category-hero { padding: 36px 0 32px; }
            .section-padding { padding-top: 40px; padding-bottom: 40px; }
        }
        @media (max-width: 640px) {
            .related-grid { grid-template-columns: 1fr; }
            .knowledge-card-grid { grid-template-columns: 1fr; }
            .article-block { padding: 18px; }
            .category-hero h1 { font-size: 1.5rem; }
            .hero-image-wrapper img { max-height: 220px; }
            .bottom-tab-nav a { font-size: 0.6rem; max-width: 60px; }
            .bottom-tab-nav a i { font-size: 1rem; }
        }

/* roulang page: category6 */
:root {
            --primary: #1E6FBA;
            --primary-dark: #0D5A9E;
            --primary-light: #E8F1F9;
            --accent: #E5A93D;
            --accent-red: #C8472B;
            --bg: #F6F9FC;
            --bg-white: #FFFFFF;
            --text: #1B2A3A;
            --text-secondary: #5A6B7D;
            --text-muted: #8A9AAE;
            --border: rgba(26, 60, 100, 0.08);
            --border-light: rgba(26, 60, 100, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 6px rgba(26, 60, 100, 0.05);
            --shadow-md: 0 2px 6px rgba(26, 60, 100, 0.05), 0 12px 28px rgba(26, 60, 100, 0.07);
            --shadow-lg: 0 4px 12px rgba(26, 60, 100, 0.08), 0 16px 36px rgba(26, 60, 100, 0.1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --spacing-section: 72px;
            --spacing-card: 24px;
            --transition: 180ms ease;
        }

        @media (max-width: 1024px) {
            :root {
                --spacing-section: 56px;
            }
        }

        @media (max-width: 640px) {
            :root {
                --spacing-section: 40px;
            }
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        .text-muted {
            color: var(--text-muted);
            font-size: 0.875rem;
        }
        .text-small {
            font-size: 0.875rem;
        }
        .text-bold {
            font-weight: 700;
            color: var(--text);
        }

        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        .section-padding {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }
        .section-padding-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }

        .section-header {
            margin-bottom: 32px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .section-header h2 {
            margin-bottom: 10px;
            font-size: clamp(1.35rem, 2.8vw, 1.9rem);
            font-weight: 700;
            color: var(--text);
        }
        .section-header p {
            max-width: 640px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .bg-white-section {
            background-color: var(--bg-white);
        }
        .bg-light-section {
            background-color: var(--bg);
        }

        /* Header / Navigation */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(26, 60, 100, 0.04);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0 16px;
            height: 64px;
            display: flex;
            align-items: center;
        }
        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding-left: 0;
            padding-right: 0;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text);
            text-decoration: none;
            white-space: nowrap;
        }
        .logo:hover,
        .logo:focus {
            color: var(--primary);
        }
        .logo .logo-mark {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-desktop a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            font-weight: 500;
            padding: 8px 10px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition);
            white-space: nowrap;
        }
        .nav-desktop a:hover,
        .nav-desktop a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-desktop a.active {
            color: var(--primary);
            background: var(--primary-light);
            border-bottom: 2px solid var(--primary);
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        }
        .nav-cta {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.3rem;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition);
        }
        .hamburger-btn:hover {
            background: var(--primary-light);
        }

        /* Buttons */
        .btn {
            display: inline-block;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            border: 2px solid transparent;
            cursor: pointer;
            text-align: center;
            text-decoration: none;
            transition: all var(--transition);
            line-height: 1.5;
            font-family: var(--font-family);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.8rem;
            border-radius: 6px;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
        }
        .btn-primary:active {
            background-color: #0a4a7e;
            border-color: #0a4a7e;
            transform: scale(0.98);
        }
        .btn-accent {
            background-color: var(--accent);
            color: #1B2A3A;
            border-color: var(--accent);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background-color: #d99a2b;
            border-color: #d99a2b;
            color: #1B2A3A;
        }
        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb li + li::before {
            content: "\f105";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--text-muted);
            font-size: 0.7rem;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Hero */
        .hero-stats {
            position: relative;
            background: linear-gradient(160deg, #F0F6FC 0%, #E4EFF9 45%, #DDEAF5 100%);
            padding: 72px 0 80px;
            overflow: hidden;
        }
        .hero-stats::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(30, 111, 186, 0.12) 0%, rgba(30, 111, 186, 0) 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-stats::after {
            content: "";
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(229, 169, 61, 0.1) 0%, rgba(229, 169, 61, 0) 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-stats .container-main {
            position: relative;
            z-index: 1;
        }
        .hero-stats h1 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .hero-stats .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .hero-stats .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        .hero-stats .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .hero-stats .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            max-width: 100%;
            height: auto;
        }
        .hero-stats .hero-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.85);
            border: 1px solid var(--border);
            padding: 6px 16px;
            border-radius: 24px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        /* Stats Cards */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }
        .stat-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
            text-align: center;
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-card .stat-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.1rem;
            margin: 0 auto 12px;
        }
        .stat-card .stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.2;
        }
        .stat-card .stat-number .unit {
            font-size: 1rem;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .stat-card .stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        .stat-card .stat-change {
            display: inline-block;
            margin-top: 8px;
            padding: 3px 10px;
            border-radius: 14px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .stat-card .stat-change.up {
            background: #E6F7ED;
            color: #2E7D32;
        }
        .stat-card .stat-change.down {
            background: #FFF0ED;
            color: var(--accent-red);
        }

        /* Chart Section */
        .chart-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
        }
        .chart-card .chart-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .chart-card .chart-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .bar-chart {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 8px;
            height: 260px;
            padding: 16px 0 8px;
            border-bottom: 2px solid var(--border);
            position: relative;
        }
        .bar-chart::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: repeating-linear-gradient(to top, transparent, transparent 51px, var(--border-light) 52px);
            pointer-events: none;
            opacity: 0.5;
        }
        .bar-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            position: relative;
            z-index: 1;
            max-width: 72px;
            min-width: 40px;
        }
        .bar-item .bar-value {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }
        .bar-item .bar-column {
            width: 100%;
            max-width: 52px;
            background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-sm) var(--radius-sm) 4px 4px;
            transition: all var(--transition);
            position: relative;
            min-height: 20px;
        }
        .bar-item .bar-column:hover {
            background: linear-gradient(180deg, var(--accent) 0%, #d99a2b 100%);
            transform: scaleY(1.02);
            transform-origin: bottom;
        }
        .bar-item .bar-column.highlight {
            background: linear-gradient(180deg, var(--accent) 0%, #d99a2b 100%);
        }
        .bar-item .bar-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            text-align: center;
            white-space: nowrap;
        }

        /* Line Chart SVG */
        .line-chart-wrap {
            position: relative;
            width: 100%;
            max-width: 700px;
            margin: 0 auto;
        }
        .line-chart-wrap svg {
            width: 100%;
            height: auto;
        }

        /* Comparison Table */
        .compare-table-wrap {
            overflow-x: auto;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 0;
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 720px;
        }
        .compare-table th {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 0.88rem;
            padding: 16px 18px;
            text-align: left;
            border-bottom: 2px solid var(--border);
            white-space: nowrap;
        }
        .compare-table td {
            padding: 14px 18px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-light);
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table tbody tr {
            transition: background-color var(--transition);
        }
        .compare-table tbody tr:hover {
            background-color: #FAFCFE;
        }
        .compare-table td:first-child {
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
        }
        .compare-table .highlight-num {
            color: var(--accent);
            font-weight: 700;
        }
        .compare-table .tag-cell {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.75rem;
            font-weight: 600;
            background: #E6F7ED;
            color: #2E7D32;
        }

        /* Insight Cards */
        .insight-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        @media (max-width: 1024px) {
            .insight-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .insight-card-grid {
                grid-template-columns: 1fr;
            }
        }
        .insight-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .insight-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .insight-card .insight-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.2rem;
            margin-bottom: 14px;
        }
        .insight-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .insight-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* Deep Content */
        .deep-content-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            box-shadow: var(--shadow-sm);
        }
        @media (max-width: 640px) {
            .deep-content-card {
                padding: 24px 20px;
            }
        }
        .deep-content-card h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }
        .deep-content-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 28px;
            margin-bottom: 12px;
        }
        .deep-content-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 16px;
        }
        .deep-content-card ul,
        .deep-content-card ol {
            padding-left: 24px;
            margin-bottom: 16px;
        }
        .deep-content-card li {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 8px;
        }
        .deep-content-card .highlight-box {
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
            font-size: 0.9rem;
            color: var(--text);
        }

        /* Tools Grid */
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        @media (max-width: 1024px) {
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .tools-grid {
                grid-template-columns: 1fr;
            }
        }
        .tool-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: all var(--transition);
            cursor: pointer;
        }
        .tool-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
            transform: translateY(-3px);
        }
        .tool-card .tool-icon {
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .tool-card h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }
        .tool-card p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item.active {
            border-color: var(--primary);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 18px 22px;
            background: none;
            border: none;
            cursor: pointer;
            font-family: var(--font-family);
            text-align: left;
            transition: background-color var(--transition);
        }
        .faq-question:hover {
            background: #FAFCFE;
        }
        .faq-question .faq-q-text {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: transform var(--transition);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* CTA Form */
        .cta-section {
            background: linear-gradient(160deg, #F0F6FC 0%, #E4EFF9 100%);
        }
        .cta-form-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: var(--shadow-md);
        }
        .cta-form-card .form-label {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            display: block;
        }
        .cta-form-card input,
        .cta-form-card select,
        .cta-form-card textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-family: var(--font-family);
            color: var(--text);
            background: var(--bg);
            transition: border-color var(--transition), box-shadow var(--transition);
            margin-bottom: 18px;
        }
        .cta-form-card input:focus,
        .cta-form-card select:focus,
        .cta-form-card textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 111, 186, 0.12);
            outline: none;
            background: #fff;
        }
        .cta-form-card textarea {
            min-height: 100px;
            resize: vertical;
        }

        /* Footer */
        .site-footer {
            background: #1B2A3A;
            color: #B8C7D6;
            padding-top: 56px;
            padding-bottom: 24px;
        }
        .site-footer .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 768px) {
            .site-footer .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .site-footer .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 10px;
        }
        .site-footer .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.75;
            color: #B8C7D6;
            margin-bottom: 0;
            max-width: 400px;
        }
        .site-footer h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .site-footer a {
            display: block;
            color: #B8C7D6;
            font-size: 0.85rem;
            padding: 5px 0;
            text-decoration: none;
            transition: color var(--transition);
        }
        .site-footer a:hover,
        .site-footer a:focus {
            color: var(--accent);
        }
        .site-footer .footer-bottom {
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 10px;
            font-size: 0.8rem;
            color: #8FA3B5;
        }
        .site-footer .footer-bottom .footer-links {
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .site-footer .footer-bottom .footer-links a {
            display: inline;
            font-size: 0.8rem;
            padding: 0;
        }

        /* Bottom Tab Navigation */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            z-index: 99;
            padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
            box-shadow: 0 -1px 6px rgba(26, 60, 100, 0.06);
        }
        .bottom-tab-nav .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 500px;
            margin: 0 auto;
        }
        .bottom-tab-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 0.68rem;
            color: var(--text-muted);
            text-decoration: none;
            padding: 4px 10px;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .bottom-tab-nav a i {
            font-size: 1.1rem;
        }
        .bottom-tab-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .bottom-tab-nav a:hover {
            color: var(--primary);
        }

        @media (max-width: 1024px) {
            .bottom-tab-nav {
                display: block;
            }
            body {
                padding-bottom: 64px;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .nav-cta .btn-sm {
                display: none;
            }
        }
        @media (max-width: 640px) {
            .hero-stats {
                padding: 48px 0 56px;
            }
            .hero-stats .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .bar-chart {
                height: 200px;
            }
            .bar-item {
                max-width: 48px;
                min-width: 30px;
            }
            .bar-item .bar-column {
                max-width: 36px;
            }
        }

/* roulang page: category7 */
:root {
            --primary: #1E6FBA;
            --primary-dark: #0D5A9E;
            --primary-light: #E8F1F9;
            --accent: #E5A93D;
            --accent-red: #C8472B;
            --bg: #F6F9FC;
            --bg-white: #FFFFFF;
            --text: #1B2A3A;
            --text-secondary: #5A6B7D;
            --text-muted: #8A9AAE;
            --border: rgba(26, 60, 100, 0.08);
            --border-light: rgba(26, 60, 100, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 6px rgba(26, 60, 100, 0.05);
            --shadow-md: 0 2px 6px rgba(26, 60, 100, 0.05), 0 12px 28px rgba(26, 60, 100, 0.07);
            --shadow-lg: 0 4px 12px rgba(26, 60, 100, 0.08), 0 16px 36px rgba(26, 60, 100, 0.1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --spacing-section: 72px;
            --spacing-card: 24px;
            --transition: 180ms ease;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            padding-bottom: 0;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        .text-muted {
            color: var(--text-muted);
            font-size: 0.875rem;
        }

        .text-small {
            font-size: 0.875rem;
        }

        .text-bold {
            font-weight: 700;
            color: var(--text);
        }

        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        .section-padding {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        .section-padding-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }

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

        .section-header .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .section-header h2 {
            margin-bottom: 10px;
            color: var(--text);
            font-size: clamp(1.35rem, 2.8vw, 1.9rem);
            font-weight: 700;
        }

        .section-header p {
            max-width: 640px;
            font-size: 0.95rem;
            margin-bottom: 0;
            color: var(--text-secondary);
        }

        .bg-white-section {
            background-color: var(--bg-white);
        }

        .bg-light-section {
            background-color: var(--bg);
        }

        /* Header / Navigation */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(26, 60, 100, 0.04);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0 16px;
            height: 64px;
            display: flex;
            align-items: center;
        }

        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding-left: 0;
            padding-right: 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text);
            text-decoration: none;
            white-space: nowrap;
        }

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

        .logo .logo-mark {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

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

        .nav-desktop a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition);
            white-space: nowrap;
        }

        .nav-desktop a:hover,
        .nav-desktop a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-desktop a.active {
            color: var(--primary);
            background: var(--primary-light);
            border-bottom: 2px solid var(--primary);
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        }

        .nav-cta {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: color var(--transition), background-color var(--transition);
        }

        .hamburger-btn:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            border: 2px solid transparent;
            line-height: 1.5;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

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

        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        .btn-outline:active {
            transform: scale(0.97);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        .btn-accent:hover,
        .btn-accent:focus {
            background: #d69a30;
            border-color: #d69a30;
            color: #fff;
        }

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

        .breadcrumb {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
            font-size: 0.85rem;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--text-muted);
        }

        .breadcrumb li:not(:last-child)::after {
            content: '/';
            color: var(--text-muted);
            margin-left: 4px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }

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

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Hero */
        .policy-hero {
            padding: 56px 0 64px;
            background: linear-gradient(135deg, #E8F1F9 0%, #F6F9FC 40%, #FFFFFF 100%);
            position: relative;
            overflow: hidden;
        }

        .policy-hero::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(30, 111, 186, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .policy-hero .container-main {
            position: relative;
            z-index: 1;
        }

        .policy-hero h1 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .policy-hero .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        .hero-tag {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 6px 16px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text-secondary);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .hero-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        /* Indicator Cards */
        .indicator-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 0;
        }

        .indicator-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: all var(--transition);
        }

        .indicator-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .indicator-card .indicator-num {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .indicator-card .indicator-num .unit {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            margin-left: 2px;
        }

        .indicator-card .indicator-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* Policy List Section */
        .policy-list-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .policy-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .policy-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(30, 111, 186, 0.2);
        }

        .policy-card .policy-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .policy-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .policy-card .policy-excerpt {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.75;
            flex-grow: 1;
            margin-bottom: 16px;
        }

        .policy-card .policy-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            justify-content: space-between;
        }

        .policy-card .policy-tag {
            background: var(--primary-light);
            color: var(--primary);
            padding: 3px 12px;
            border-radius: 14px;
            font-size: 0.75rem;
            font-weight: 600;
            display: inline-block;
        }

        .policy-card .read-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }

        .policy-card .read-link i {
            transition: transform var(--transition);
        }

        .policy-card .read-link:hover {
            color: var(--primary-dark);
        }

        .policy-card .read-link:hover i {
            transform: translateX(3px);
        }

        /* Category Tag Navigation */
        .tag-nav-section {
            background: var(--bg-white);
        }

        .tag-nav-flex {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .tag-nav-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }

        .tag-nav-item:hover,
        .tag-nav-item.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .tag-nav-item i {
            font-size: 0.8rem;
        }

        /* Document Download Cards */
        .doc-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

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

        .doc-card .doc-thumb {
            height: 160px;
            background-size: cover;
            background-position: center;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .doc-card .doc-thumb .doc-icon {
            width: 56px;
            height: 56px;
            background: rgba(255, 255, 255, 0.92);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .doc-card .doc-body {
            padding: 20px 22px 22px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .doc-card .doc-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .doc-card .doc-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex-grow: 1;
            margin-bottom: 14px;
        }

        .doc-card .doc-download {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.85rem;
            transition: all var(--transition);
            text-decoration: none;
        }

        .doc-card .doc-download:hover {
            color: var(--primary-dark);
        }

        .doc-card .doc-download i {
            transition: transform var(--transition);
        }

        .doc-card .doc-download:hover i {
            transform: translateY(3px);
        }

        /* Deep Content */
        .deep-content-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 40px 36px;
        }

        .deep-content-card h2 {
            font-size: clamp(1.3rem, 2.5vw, 1.7rem);
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
            line-height: 1.4;
        }

        .deep-content-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 24px;
            margin-bottom: 12px;
        }

        .deep-content-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 14px;
        }

        .deep-content-card ul,
        .deep-content-card ol {
            padding-left: 20px;
            margin-bottom: 16px;
        }

        .deep-content-card ul li,
        .deep-content-card ol li {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 6px;
        }

        .deep-content-card .highlight-box {
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 16px 0;
            font-size: 0.9rem;
            color: var(--text);
        }

        /* Timeline */
        .timeline-section {
            background: var(--bg-white);
        }

        .timeline {
            position: relative;
            padding-left: 28px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding-bottom: 28px;
        }

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

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -24px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--primary-light);
            box-shadow: 0 0 0 3px rgba(30, 111, 186, 0.1);
        }

        .timeline-item .timeline-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 4px;
        }

        .timeline-item .timeline-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .timeline-item .timeline-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

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

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

        .faq-item.active {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            background: none;
            border: none;
            cursor: pointer;
            font-family: var(--font-family);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            text-align: left;
            gap: 16px;
            transition: color var(--transition);
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all var(--transition);
        }

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

        .faq-answer {
            padding: 0 20px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.75;
            display: none;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 56px 0;
            border-radius: 0;
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: clamp(1.4rem, 2.5vw, 1.8rem);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.95rem;
            margin-bottom: 0;
            max-width: 520px;
        }

        .cta-inner .btn-accent {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(229, 169, 61, 0.35);
            white-space: nowrap;
        }

        .cta-inner .btn-accent:hover {
            background: #d69a30;
            border-color: #d69a30;
            box-shadow: 0 6px 20px rgba(229, 169, 61, 0.45);
        }

        /* Footer */
        .site-footer {
            background: #1B2A3A;
            color: #B8C7D5;
            padding: 48px 0 24px;
            font-size: 0.9rem;
        }

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

        .site-footer .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 10px;
        }

        .site-footer .footer-brand p {
            color: #8FA3B5;
            line-height: 1.75;
            font-size: 0.88rem;
            max-width: 360px;
        }

        .site-footer h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .site-footer h5+.footer-links a,
        .site-footer .footer-inner>div:not(.footer-brand) a {
            display: block;
            color: #8FA3B5;
            text-decoration: none;
            font-size: 0.88rem;
            margin-bottom: 8px;
            transition: color var(--transition);
        }

        .site-footer .footer-inner>div:not(.footer-brand) a:hover {
            color: #fff;
        }

        .site-footer .footer-inner>div:not(.footer-brand) a.active {
            color: var(--accent);
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: #6B7F91;
        }

        .site-footer .footer-bottom a {
            color: #8FA3B5;
            text-decoration: none;
            transition: color var(--transition);
        }

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

        .site-footer .footer-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        /* Mobile Bottom Tab Nav */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            box-shadow: 0 -2px 10px rgba(26, 60, 100, 0.06);
            z-index: 98;
            padding: 6px 4px;
            padding-bottom: calc(6px + env(safe-area-inset-bottom));
        }

        .mobile-bottom-nav .bottom-nav-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 500px;
            margin: 0 auto;
        }

        .mobile-bottom-nav .bottom-tab {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 0.65rem;
            color: var(--text-muted);
            text-decoration: none;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            min-width: 52px;
        }

        .mobile-bottom-nav .bottom-tab i {
            font-size: 1.1rem;
        }

        .mobile-bottom-nav .bottom-tab.active {
            color: var(--primary);
        }

        .mobile-bottom-nav .bottom-tab:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        /* Mobile Drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(27, 42, 58, 0.5);
            z-index: 99;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition);
        }

        .mobile-drawer.open {
            opacity: 1;
            pointer-events: auto;
            display: block;
        }

        .mobile-drawer .drawer-content {
            background: var(--bg-white);
            padding: 20px 16px;
            max-width: 480px;
            width: 85%;
            height: 100%;
            overflow-y: auto;
            box-shadow: var(--shadow-lg);
            transform: translateX(-100%);
            transition: transform var(--transition);
        }

        .mobile-drawer.open .drawer-content {
            transform: translateX(0);
        }

        .mobile-drawer .drawer-content a {
            display: block;
            padding: 12px 16px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            margin-bottom: 4px;
            transition: all var(--transition);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 56px;
            }

            .nav-desktop {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .hamburger-btn {
                display: inline-flex;
            }

            .indicator-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

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

            .policy-list-grid {
                grid-template-columns: 1fr;
            }

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

            body {
                padding-bottom: 70px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 40px;
            }

            .policy-hero {
                padding: 36px 0 44px;
            }

            .deep-content-card {
                padding: 28px 20px;
            }

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

            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
            }

            .doc-grid {
                grid-template-columns: 1fr;
            }

            .indicator-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .site-header {
                height: 56px;
            }

            .logo {
                font-size: 1rem;
            }

            .logo .logo-mark {
                width: 28px;
                height: 28px;
                font-size: 0.8rem;
            }

            .btn {
                padding: 10px 18px;
                font-size: 0.85rem;
            }

            .section-header h2 {
                font-size: 1.3rem;
            }

            .policy-card {
                padding: 20px 16px;
            }

            .deep-content-card {
                padding: 20px 16px;
            }

            .tag-nav-flex {
                gap: 8px;
            }

            .tag-nav-item {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
        }