/* roulang page: index */
:root {
            --color-primary: #0a2a47;
            --color-primary-light: #0f3460;
            --color-primary-lighter: #163d6b;
            --color-accent: #c8944a;
            --color-accent-light: #d4a85c;
            --color-accent-bg: #fdf6ec;
            --color-bg: #f6f8fb;
            --color-bg-alt: #eef2f7;
            --color-surface: #ffffff;
            --color-text: #1a1f2e;
            --color-text-secondary: #5a6275;
            --color-text-muted: #8b92a3;
            --color-border: #e4e8ef;
            --color-border-light: #f0f2f6;
            --color-success: #0ea878;
            --color-warning: #f59e0b;
            --color-danger: #e8554a;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 18px;
            --shadow-sm: 0 1px 3px rgba(10, 42, 71, 0.06);
            --shadow-md: 0 4px 16px rgba(10, 42, 71, 0.09);
            --shadow-lg: 0 8px 30px rgba(10, 42, 71, 0.13);
            --shadow-xl: 0 14px 44px rgba(10, 42, 71, 0.16);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
            --header-height: 64px;
            --container-max: 1200px;
            --container-narrow: 860px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--color-primary-light);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .container--narrow {
            max-width: var(--container-narrow);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--header-height);
            transition: box-shadow var(--transition-normal);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 20px;
        }
        .header-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .header-logo:hover {
            color: var(--color-accent);
        }
        .header-logo .logo-icon {
            display: inline-block;
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-sm);
            vertical-align: middle;
            margin-right: 8px;
            position: relative;
            top: -1px;
        }
        .header-logo .logo-icon::after {
            content: 'W';
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 0.85rem;
            height: 100%;
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .nav-main a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-main a:hover {
            color: var(--color-primary);
            background: var(--color-bg-alt);
        }
        .nav-main a.active {
            color: var(--color-accent);
            font-weight: 600;
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 3px;
        }
        .nav-hot-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .nav-hot-tag {
            display: inline-block;
            padding: 4px 10px;
            font-size: 0.78rem;
            border-radius: 20px;
            background: var(--color-accent-bg);
            color: var(--color-accent);
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }
        .nav-hot-tag:hover {
            background: var(--color-accent);
            color: #fff;
        }
        .header-search-wrap {
            position: relative;
            flex-shrink: 0;
        }
        .header-search-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            font-size: 1rem;
        }
        .header-search-btn:hover {
            background: var(--color-primary);
            color: #fff;
        }
        .header-search-dropdown {
            display: none;
            position: absolute;
            right: 0;
            top: 46px;
            width: 300px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            padding: 12px;
            z-index: 1001;
        }
        .header-search-dropdown.active {
            display: block;
        }
        .header-search-dropdown form {
            display: flex;
            gap: 8px;
        }
        .header-search-dropdown input {
            flex: 1;
            padding: 10px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            outline: none;
            font-size: 0.9rem;
            transition: border-color var(--transition-fast);
        }
        .header-search-dropdown input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200, 148, 74, 0.1);
        }
        .header-search-dropdown button {
            padding: 10px 16px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: background var(--transition-fast);
        }
        .header-search-dropdown button:hover {
            background: var(--color-primary-light);
        }
        .mobile-menu-toggle {
            display: none;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--color-bg-alt);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            flex-shrink: 0;
        }
        .mobile-menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .mobile-menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .mobile-menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-surface);
            z-index: 999;
            padding: 20px 24px;
            overflow-y: auto;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-nav-panel.active {
            display: flex;
        }
        .mobile-nav-panel a {
            display: block;
            padding: 14px 16px;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
        }
        .mobile-nav-panel a:hover,
        .mobile-nav-panel a.active {
            background: var(--color-accent-bg);
            color: var(--color-accent);
        }
        .mobile-nav-panel .mobile-search {
            margin-top: 8px;
            display: flex;
            gap: 8px;
        }
        .mobile-nav-panel .mobile-search input {
            flex: 1;
            padding: 12px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            outline: none;
            font-size: 0.95rem;
        }
        .mobile-nav-panel .mobile-search button {
            padding: 12px 18px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            background: linear-gradient(160deg, #081d33 0%, #0a2a47 35%, #0f3460 100%);
            color: #fff;
            padding: 80px 0 90px;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--color-bg) 0%, transparent 100%);
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 50px;
        }
        .hero-text {
            flex: 1;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(200, 148, 74, 0.2);
            border: 1px solid rgba(200, 148, 74, 0.4);
            border-radius: 20px;
            font-size: 0.85rem;
            color: #f0d89c;
            font-weight: 500;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
            line-height: 1.25;
        }
        .hero h1 .highlight {
            color: #f0d89c;
            position: relative;
        }
        .hero-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
            max-width: 540px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-normal);
            white-space: nowrap;
            cursor: pointer;
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
        }
        .btn-primary:hover {
            background: #b8813a;
            border-color: #b8813a;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.45);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
            border-radius: var(--radius-lg);
        }
        .btn-ghost {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-border);
        }
        .btn-ghost:hover {
            background: var(--color-bg-alt);
            border-color: var(--color-primary-light);
            color: var(--color-primary-light);
        }
        .hero-visual {
            flex: 0 0 380px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-visual-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-xl);
            padding: 30px;
            backdrop-filter: blur(8px);
            text-align: center;
        }
        .hero-visual-card .stat-num {
            font-size: 2.8rem;
            font-weight: 800;
            color: #f0d89c;
            line-height: 1;
        }
        .hero-visual-card .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }
        .hero-visual-dots {
            display: flex;
            gap: 10px;
            justify-content: center;
            margin-top: 20px;
        }
        .hero-visual-dots span {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
        }
        .hero-visual-dots span:nth-child(2) {
            background: var(--color-accent);
            width: 28px;
            border-radius: 20px;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 70px 0;
        }
        .section--alt {
            background: var(--color-bg-alt);
        }
        .section--dark {
            background: var(--color-primary);
            color: #fff;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }
        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 560px;
            margin: 0 auto;
        }
        .section--dark .section-header h2 {
            color: #fff;
        }
        .section--dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== FEATURES ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--color-accent);
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
            opacity: 0;
            transition: opacity var(--transition-normal);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: var(--color-accent-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: var(--color-accent);
        }
        .feature-card h3 {
            font-size: 1.08rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ========== CATEGORY CARDS ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            display: flex;
            min-height: 240px;
        }
        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .category-card-img {
            flex: 0 0 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .category-card:hover .category-card-img img {
            transform: scale(1.06);
        }
        .category-card-body {
            flex: 1;
            padding: 28px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .category-card-tag {
            display: inline-block;
            padding: 4px 12px;
            background: var(--color-accent-bg);
            color: var(--color-accent);
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 10px;
            width: fit-content;
        }
        .category-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .category-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-bottom: 14px;
            line-height: 1.6;
        }
        .category-card .card-link {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }
        .category-card:hover .card-link {
            gap: 8px;
        }

        /* ========== LATEST LIST ========== */
        .latest-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--color-surface);
        }
        .latest-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 24px;
            border-bottom: 1px solid var(--color-border-light);
            transition: background var(--transition-fast);
            cursor: pointer;
        }
        .latest-item:last-child {
            border-bottom: none;
        }
        .latest-item:hover {
            background: var(--color-bg);
        }
        .latest-item-thumb {
            flex: 0 0 100px;
            height: 70px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .latest-item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .latest-item-info {
            flex: 1;
            min-width: 0;
        }
        .latest-item-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .latest-item-info h4 a {
            color: var(--color-text);
        }
        .latest-item-info h4 a:hover {
            color: var(--color-accent);
        }
        .latest-item-meta {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .latest-item-tag {
            display: inline-block;
            padding: 2px 10px;
            background: var(--color-bg-alt);
            border-radius: 12px;
            font-size: 0.75rem;
            color: var(--color-text-secondary);
            font-weight: 500;
        }
        .latest-empty {
            text-align: center;
            padding: 40px;
            color: var(--color-text-muted);
            font-size: 0.95rem;
        }

        /* ========== STATS ========== */
        .stats-row {
            display: flex;
            gap: 30px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .stat-block {
            text-align: center;
            flex: 0 0 auto;
            min-width: 140px;
        }
        .stat-block .stat-value {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1;
        }
        .stat-block .stat-desc {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-top: 6px;
        }
        .section--dark .stat-block .stat-value {
            color: #f0d89c;
        }
        .section--dark .stat-block .stat-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== WHY US ========== */
        .why-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .why-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            text-align: center;
        }
        .why-card:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
            transform: translateY(-2px);
        }
        .why-card-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-accent);
            opacity: 0.6;
            line-height: 1;
            margin-bottom: 10px;
        }
        .why-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .why-card p {
            font-size: 0.87rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            width: 100%;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--color-text);
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            transition: all var(--transition-fast);
            color: var(--color-text-muted);
        }
        .faq-item.open .faq-arrow {
            background: var(--color-accent);
            color: #fff;
            transform: rotate(180deg);
        }
        .faq-answer {
            display: none;
            padding: 0 22px 20px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            background: linear-gradient(150deg, #0f3460 0%, #0a2a47 100%);
            color: #fff;
            padding: 70px 0;
            text-align: center;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #081620;
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-inner {
                flex-direction: column;
                text-align: center;
                gap: 30px;
            }
            .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-visual {
                flex: 0 0 auto;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .category-card {
                flex-direction: column;
            }
            .category-card-img {
                flex: 0 0 180px;
                height: 180px;
            }
            .why-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .nav-hot-tags {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .nav-main {
                display: none;
            }
            .header-search-wrap {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .hero {
                padding: 50px 0 60px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-visual-card .stat-num {
                font-size: 2rem;
            }
            .hero-visual {
                flex: 0 0 auto;
                width: 100%;
                max-width: 280px;
            }
            .section {
                padding: 44px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .feature-card {
                padding: 20px 14px;
            }
            .feature-icon {
                width: 44px;
                height: 44px;
                font-size: 1.2rem;
            }
            .feature-card h3 {
                font-size: 0.93rem;
            }
            .feature-card p {
                font-size: 0.8rem;
            }
            .category-card {
                min-height: auto;
            }
            .category-card-img {
                height: 160px;
                flex: 0 0 160px;
            }
            .category-card-body {
                padding: 18px 16px;
            }
            .latest-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                padding: 14px 16px;
            }
            .latest-item-thumb {
                flex: 0 0 auto;
                width: 100%;
                height: 140px;
            }
            .why-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                gap: 20px;
            }
            .stat-block .stat-value {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .btn-lg {
                padding: 13px 24px;
                font-size: 0.95rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero h1 {
                font-size: 1.4rem;
            }
            .hero-desc {
                font-size: 0.85rem;
            }
            .hero {
                padding: 36px 0 44px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .category-card-img {
                height: 140px;
                flex: 0 0 140px;
            }
            .stats-row {
                gap: 14px;
            }
            .stat-block {
                min-width: 100px;
            }
            .stat-block .stat-value {
                font-size: 1.6rem;
            }
            .btn {
                padding: 10px 18px;
                font-size: 0.85rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 260px;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .faq-question {
                font-size: 0.88rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 16px;
                font-size: 0.82rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a365d;
            --primary-600: #1e4976;
            --primary-500: #2563a0;
            --primary-400: #3b82c4;
            --primary-300: #5b9bd5;
            --accent: #c88d2f;
            --accent-600: #b0781f;
            --accent-500: #d4a04a;
            --accent-400: #e2bd6b;
            --accent-300: #f0d78c;
            --accent-200: #f8ebc4;
            --bg: #ffffff;
            --bg-alt: #f5f7fa;
            --bg-card: #ffffff;
            --bg-dark: #0f1f33;
            --text: #1e293b;
            --text-700: #334155;
            --text-600: #475569;
            --text-500: #64748b;
            --text-400: #94a3b8;
            --text-300: #cbd5e1;
            --text-inverse: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-md: 14px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-xs: 0 1px 3px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow: 0 2px 14px rgba(0,0,0,0.07);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.09);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.11);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.13);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, 'Segoe UI', sans-serif;
            --font-mono: 'SF Mono', 'Menlo', 'Consolas', 'Courier New', monospace;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --nav-height: 64px;
            --header-total-height: 120px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-style: none;
        }

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

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

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

        ul, ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-xs);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 24px;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .header-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary-500), var(--primary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .header-logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-600);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-main a:hover {
            color: var(--primary-500);
            background: rgba(37,99,160,0.05);
        }
        .nav-main a.active {
            color: var(--primary);
            background: rgba(26,54,93,0.07);
            font-weight: 600;
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent-500);
            border-radius: 3px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--primary);
            border-radius: 3px;
            transition: all var(--transition);
            transform-origin: center;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.45);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .mobile-nav-overlay.show {
            opacity: 1;
        }

        /* ========== MAIN ========== */
        .main-content {
            flex: 1;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border-light);
            padding: 10px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-500);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-500);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--primary-500);
        }
        .breadcrumb .sep {
            color: var(--text-400);
            font-size: 12px;
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ========== CATEGORY HERO ========== */
        .category-hero {
            position: relative;
            padding: 70px 0 60px;
            background: linear-gradient(160deg, #0f1f33 0%, #1a365d 40%, #1e4976 100%);
            overflow: hidden;
            color: var(--text-inverse);
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            mix-blend-mode: soft-light;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--bg) 0%, transparent 100%);
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .category-hero .cat-badge {
            display: inline-block;
            padding: 6px 18px;
            background: rgba(255,255,255,0.12);
            border: 1px solid rgba(255,255,255,0.22);
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--accent-300);
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .category-hero h1 {
            font-size: clamp(28px, 5vw, 44px);
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .category-hero .hero-desc {
            font-size: 17px;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .category-hero .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .category-hero .hero-stat {
            text-align: center;
        }
        .category-hero .hero-stat-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent-300);
        }
        .category-hero .hero-stat-label {
            font-size: 13px;
            color: rgba(255,255,255,0.65);
            margin-top: 2px;
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: 56px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
        .section-header .section-subtitle {
            font-size: 16px;
            color: var(--text-500);
            max-width: 540px;
            margin: 0 auto;
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--primary-400);
            margin-bottom: 8px;
        }

        /* ========== GUIDE STEPS ========== */
        .guide-steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .guide-step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            padding: 28px 24px 24px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .guide-step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary-300);
        }
        .guide-step-card .step-number {
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 56px;
            font-weight: 800;
            color: rgba(26,54,93,0.06);
            line-height: 1;
            pointer-events: none;
        }
        .guide-step-card .step-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 22px;
            margin-bottom: 18px;
            flex-shrink: 0;
        }
        .guide-step-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .guide-step-card p {
            font-size: 15px;
            color: var(--text-500);
            line-height: 1.65;
            flex-grow: 1;
        }
        .guide-step-card .step-tag {
            display: inline-block;
            margin-top: 14px;
            padding: 4px 12px;
            background: var(--accent-200);
            color: var(--accent-600);
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            align-self: flex-start;
        }

        /* ========== DETAIL GUIDE ========== */
        .guide-detail-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .guide-detail-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-fast);
        }
        .guide-detail-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--border);
        }
        .guide-detail-num {
            width: 42px;
            height: 42px;
            min-width: 42px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .guide-detail-content h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
        .guide-detail-content p {
            font-size: 14.5px;
            color: var(--text-500);
            line-height: 1.6;
        }

        /* ========== SAFETY CARDS ========== */
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }
        .safety-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            border-left: 4px solid var(--accent-500);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .safety-card:hover {
            box-shadow: var(--shadow);
            border-left-color: var(--primary-400);
        }
        .safety-card .safety-icon {
            width: 44px;
            height: 44px;
            min-width: 44px;
            border-radius: var(--radius-sm);
            background: #fef3c7;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--accent-600);
        }
        .safety-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
        .safety-card p {
            font-size: 14px;
            color: var(--text-500);
            line-height: 1.55;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--primary-500);
        }
        .faq-question .faq-arrow {
            width: 22px;
            height: 22px;
            min-width: 22px;
            border-radius: 50%;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform var(--transition);
            font-size: 14px;
            color: var(--text-400);
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-500);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(150deg, #1a365d 0%, #1e4976 60%, #2563a0 100%);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: clamp(24px, 3.5vw, 34px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255,255,255,0.8);
            max-width: 500px;
            margin: 0 auto 28px;
        }
        .btn-cta {
            display: inline-block;
            padding: 14px 36px;
            background: var(--accent-500);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            border-radius: 30px;
            transition: all var(--transition);
            letter-spacing: 0.5px;
            box-shadow: 0 6px 22px rgba(200,141,47,0.35);
        }
        .btn-cta:hover {
            background: var(--accent-400);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(200,141,47,0.45);
            color: #fff;
        }

        /* ========== RELATED ========== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--primary-300);
        }
        .related-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .related-card-body {
            padding: 18px 20px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card-body h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
        .related-card-body p {
            font-size: 14px;
            color: var(--text-500);
            line-height: 1.55;
            flex-grow: 1;
            margin-bottom: 12px;
        }
        .related-card-body .link-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-400);
            align-self: flex-start;
            transition: color var(--transition-fast);
        }
        .related-card-body .link-more:hover {
            color: var(--primary-600);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-300);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand-name {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-400);
            line-height: 1.6;
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-400);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-300);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--text-400);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .footer-grid > div:first-child {
                grid-column: 1 / -1;
            }
            .category-hero {
                padding: 50px 0 44px;
            }
            .category-hero .hero-stats {
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 56px;
            }
            .hamburger {
                display: flex;
            }
            .nav-main {
                position: fixed;
                top: 0;
                right: -300px;
                width: 280px;
                height: 100vh;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 80px 20px 30px;
                gap: 4px;
                box-shadow: var(--shadow-xl);
                transition: right var(--transition-slow);
                z-index: 999;
                overflow-y: auto;
            }
            .nav-main.open {
                right: 0;
            }
            .nav-main a {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }
            .mobile-nav-overlay {
                display: block;
                pointer-events: none;
            }
            .mobile-nav-overlay.show {
                pointer-events: auto;
            }
            .category-hero {
                padding: 40px 0 36px;
            }
            .category-hero .hero-stats {
                gap: 20px;
            }
            .category-hero .hero-stat-num {
                font-size: 26px;
            }
            .guide-steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .safety-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .guide-detail-item {
                flex-direction: column;
                gap: 12px;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .section {
                padding: 40px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-logo-text {
                font-size: 16px;
            }
            .header-logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero .hero-desc {
                font-size: 15px;
            }
            .category-hero .hero-stats {
                flex-direction: column;
                gap: 12px;
            }
            .category-hero .hero-stat-num {
                font-size: 24px;
            }
            .guide-step-card {
                padding: 20px 16px;
            }
            .guide-step-card .step-number {
                font-size: 42px;
                top: 10px;
                right: 14px;
            }
            .faq-question {
                font-size: 15px;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
            .btn-cta {
                padding: 12px 28px;
                font-size: 15px;
            }
            .section-header h2 {
                font-size: 22px;
            }
        }

/* roulang page: article */
:root {
            --primary: #0f2b46;
            --primary-medium: #1a3f63;
            --primary-light: #2a5f8f;
            --accent: #c8943e;
            --accent-light: #e2b855;
            --accent-pale: #fdf3e0;
            --bg: #f6f7f9;
            --bg-alt: #eef1f5;
            --white: #ffffff;
            --text: #1e293b;
            --text-strong: #0f172a;
            --text-medium: #475569;
            --text-light: #94a3b8;
            --text-muted: #b0bcc9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 3px rgba(15,43,70,0.04);
            --shadow-sm: 0 2px 8px rgba(15,43,70,0.06);
            --shadow: 0 4px 20px rgba(15,43,70,0.08);
            --shadow-md: 0 8px 32px rgba(15,43,70,0.10);
            --shadow-lg: 0 16px 48px rgba(15,43,70,0.12);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Hiragino Sans GB', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-heading: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --content-max: 800px;
            --container-max: 1200px;
            --header-height: 64px;
            --nav-height: 52px;
        }

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

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

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-narrow {
            width: 100%;
            max-width: var(--content-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-xs);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            padding: 0 24px;
            max-width: var(--container-max);
            margin: 0 auto;
        }

        .header-logo {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .header-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary-medium) 0%, var(--primary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-light);
            font-weight: 800;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

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

        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg);
            border-radius: 30px;
            padding: 8px 16px;
            border: 1px solid var(--border);
            transition: all var(--transition);
            max-width: 280px;
            width: 100%;
        }

        .header-search:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(200,148,62,0.12);
            background: var(--white);
        }

        .header-search input {
            border: none;
            background: transparent;
            flex: 1;
            font-size: 0.9rem;
            color: var(--text);
            min-width: 0;
        }

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

        .header-search-btn {
            background: none;
            color: var(--text-light);
            font-size: 1rem;
            padding: 2px 4px;
            flex-shrink: 0;
            transition: color var(--transition);
        }

        .header-search-btn:hover {
            color: var(--accent);
        }

        .nav-bar {
            background: var(--primary);
            border-top: 1px solid rgba(255,255,255,0.06);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            height: var(--nav-height);
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .nav-inner::-webkit-scrollbar {
            height: 3px;
        }

        .nav-inner::-webkit-scrollbar-thumb {
            background: rgba(255,255,255,0.15);
            border-radius: 3px;
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: 2px;
            flex-shrink: 0;
        }

        .nav-main a {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255,255,255,0.8);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
            letter-spacing: 0.01em;
        }

        .nav-main a:hover {
            color: #ffffff;
            background: rgba(255,255,255,0.08);
        }

        .nav-main a.active {
            color: #ffffff;
            background: rgba(255,255,255,0.12);
            font-weight: 600;
        }

        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent-light);
        }

        .nav-hot-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--accent-light);
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.1);
            white-space: nowrap;
            flex-shrink: 0;
            margin-left: auto;
            transition: all var(--transition);
        }

        .nav-hot-tag:hover {
            background: rgba(255,255,255,0.12);
            color: #ffffff;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            color: var(--primary);
            font-size: 1.6rem;
            padding: 6px;
            border-radius: 6px;
        }

        /* ========== MAIN CONTENT ========== */
        .main-content {
            flex: 1;
            padding: 32px 0 60px;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            padding: 16px 0 20px;
            margin-bottom: 8px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.88rem;
            color: var(--text-light);
        }

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

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

        .breadcrumb .sep {
            color: var(--text-muted);
            font-size: 0.7rem;
            margin: 0 2px;
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--text-strong);
            font-weight: 500;
            pointer-events: none;
        }

        /* ========== ARTICLE HEADER ========== */
        .article-header {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 40px 48px 32px;
            margin-bottom: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            background: var(--accent-pale);
            color: #8b6914;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .article-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.88rem;
            color: var(--text-light);
            padding-top: 8px;
            border-top: 1px solid var(--border-light);
        }

        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .article-meta-icon {
            font-size: 0.85rem;
            opacity: 0.7;
        }

        /* ========== ARTICLE FEATURED IMAGE ========== */
        .article-featured-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            background: var(--bg-alt);
        }

        .article-featured-image img {
            width: 100%;
            object-fit: cover;
            max-height: 480px;
        }

        /* ========== ARTICLE BODY ========== */
        .article-body-wrap {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            margin-bottom: 32px;
        }

        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
            word-break: break-word;
        }

        .article-body h2 {
            font-family: var(--font-heading);
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--text-strong);
            margin: 40px 0 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light);
            letter-spacing: 0.01em;
        }

        .article-body h3 {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-strong);
            margin: 32px 0 14px;
            letter-spacing: 0.01em;
        }

        .article-body h4 {
            font-family: var(--font-heading);
            font-size: 1.08rem;
            font-weight: 600;
            color: var(--text-medium);
            margin: 24px 0 10px;
        }

        .article-body p {
            margin-bottom: 16px;
        }

        .article-body ul,
        .article-body ol {
            margin: 16px 0;
            padding-left: 24px;
        }

        .article-body li {
            margin-bottom: 8px;
            padding-left: 4px;
        }

        .article-body ul li::marker {
            color: var(--accent);
        }

        .article-body blockquote {
            margin: 24px 0;
            padding: 20px 24px;
            background: var(--accent-pale);
            border-left: 4px solid var(--accent);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-medium);
            font-style: italic;
        }

        .article-body blockquote p {
            margin-bottom: 0;
        }

        .article-body img {
            border-radius: var(--radius);
            margin: 20px auto;
            max-width: 100%;
            border: 1px solid var(--border-light);
        }

        .article-body a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition);
        }

        .article-body a:hover {
            color: var(--accent);
        }

        .article-body strong {
            color: var(--text-strong);
            font-weight: 600;
        }

        .article-body code {
            background: var(--bg-alt);
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary-medium);
            border: 1px solid var(--border);
        }

        .article-body pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 20px 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-body pre code {
            background: none;
            color: inherit;
            padding: 0;
            border: none;
            font-size: inherit;
        }

        .article-body hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 32px 0;
        }

        /* ========== ARTICLE TAGS & SHARE ========== */
        .article-tags-section {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            padding: 24px 0 0;
            margin-top: 8px;
            border-top: 1px solid var(--border-light);
        }

        .article-tags-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-medium);
            flex-shrink: 0;
        }

        .article-tag {
            display: inline-flex;
            padding: 5px 12px;
            border-radius: 16px;
            font-size: 0.8rem;
            background: var(--bg-alt);
            color: var(--text-medium);
            border: 1px solid var(--border);
            transition: all var(--transition);
            white-space: nowrap;
        }

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

        /* ========== NOT FOUND STATE ========== */
        .not-found-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .not-found-icon {
            font-size: 4rem;
            margin-bottom: 20px;
            opacity: 0.6;
        }

        .not-found-title {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 12px;
        }

        .not-found-desc {
            color: var(--text-light);
            margin-bottom: 24px;
            font-size: 0.95rem;
        }

        .not-found-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
        }

        .not-found-link:hover {
            background: var(--primary-medium);
            transform: translateY(-1px);
            box-shadow: var(--shadow);
            color: #fff;
        }

        /* ========== RELATED POSTS ========== */
        .related-section {
            margin-bottom: 32px;
        }

        .related-section-title {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-section-title::before {
            content: '';
            width: 4px;
            height: 24px;
            border-radius: 2px;
            background: var(--accent);
            flex-shrink: 0;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

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

        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }

        .related-card-image {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-alt);
            flex-shrink: 0;
        }

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

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

        .related-card-body {
            padding: 16px 18px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card-category {
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 6px;
        }

        .related-card-title {
            font-family: var(--font-heading);
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-strong);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-meta {
            font-size: 0.78rem;
            color: var(--text-light);
            margin-top: auto;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-medium) 60%, #1a3f63 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            color: #ffffff;
            margin-bottom: 32px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255,255,255,0.03);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(200,148,62,0.08);
            pointer-events: none;
        }

        .cta-section>* {
            position: relative;
            z-index: 1;
        }

        .cta-title {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }

        .cta-desc {
            font-size: 1rem;
            color: rgba(255,255,255,0.8);
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 13px 32px;
            background: var(--accent);
            color: #fff;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            letter-spacing: 0.02em;
        }

        .btn-cta-primary:hover {
            background: var(--accent-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200,148,62,0.35);
            color: #fff;
        }

        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 13px 32px;
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255,255,255,0.35);
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            letter-spacing: 0.02em;
        }

        .btn-cta-outline:hover {
            border-color: #ffffff;
            background: rgba(255,255,255,0.08);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ========== BACK TO TOP / HOME ========== */
        .back-home-row {
            text-align: center;
            margin-bottom: 24px;
        }

        .back-home-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-medium);
            font-size: 0.9rem;
            font-weight: 500;
            transition: color var(--transition);
        }

        .back-home-link:hover {
            color: var(--accent);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0b1f33;
            color: rgba(255,255,255,0.75);
            padding: 48px 0 28px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand-name {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.65;
            opacity: 0.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.6);
            transition: color var(--transition);
        }

        .footer-col a:hover {
            color: var(--accent-light);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.82rem;
            color: rgba(255,255,255,0.45);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .container-narrow {
                padding: 0 20px;
            }
            .article-title {
                font-size: 1.7rem;
            }
            .article-header {
                padding: 32px 28px 24px;
            }
            .article-body-wrap {
                padding: 28px 28px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .header-search {
                max-width: 200px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 56px;
                --nav-height: 44px;
            }
            .header-top {
                padding: 0 16px;
            }
            .header-logo {
                font-size: 1.15rem;
            }
            .header-logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
            .header-search {
                max-width: 160px;
                padding: 6px 12px;
                font-size: 0.82rem;
            }
            .header-search input {
                font-size: 0.82rem;
            }
            .nav-bar {
                overflow-x: auto;
            }
            .nav-inner {
                padding: 0 12px;
                gap: 0;
            }
            .nav-main a {
                padding: 8px 12px;
                font-size: 0.85rem;
                border-radius: 6px;
            }
            .nav-hot-tag {
                font-size: 0.72rem;
                padding: 4px 10px;
            }
            .article-title {
                font-size: 1.45rem;
            }
            .article-header {
                padding: 24px 20px 20px;
                border-radius: var(--radius);
            }
            .article-body-wrap {
                padding: 24px 20px;
                border-radius: var(--radius);
            }
            .article-body {
                font-size: 0.98rem;
            }
            .article-body h2 {
                font-size: 1.3rem;
                margin: 28px 0 14px;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .related-card-title {
                font-size: 0.85rem;
            }
            .cta-section {
                padding: 32px 24px;
            }
            .cta-title {
                font-size: 1.3rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-grid>div:first-child {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .container-narrow {
                padding: 0 14px;
            }
            .header-top {
                padding: 0 12px;
            }
            .header-logo {
                font-size: 1rem;
                gap: 6px;
            }
            .header-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
                border-radius: 6px;
            }
            .header-search {
                max-width: 120px;
                padding: 5px 10px;
            }
            .header-search input {
                font-size: 0.75rem;
            }
            .nav-bar {
                border-top: 1px solid rgba(255,255,255,0.08);
            }
            .nav-inner {
                padding: 0 8px;
            }
            .nav-main a {
                padding: 7px 10px;
                font-size: 0.8rem;
                border-radius: 5px;
            }
            .nav-main a.active::after {
                width: 14px;
                height: 2px;
                bottom: 3px;
            }
            .nav-hot-tag {
                display: none;
            }
            .article-title {
                font-size: 1.25rem;
            }
            .article-header {
                padding: 18px 16px 16px;
            }
            .article-meta {
                gap: 10px;
                font-size: 0.8rem;
            }
            .article-body-wrap {
                padding: 18px 16px;
            }
            .article-body {
                font-size: 0.93rem;
                line-height: 1.75;
            }
            .article-body h2 {
                font-size: 1.15rem;
            }
            .article-body h3 {
                font-size: 1.02rem;
            }
            .article-body blockquote {
                padding: 14px 16px;
                margin: 16px 0;
            }
            .article-body pre {
                padding: 14px 16px;
                font-size: 0.8rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .related-card {
                flex-direction: row;
                align-items: stretch;
            }
            .related-card-image {
                width: 120px;
                aspect-ratio: auto;
                flex-shrink: 0;
            }
            .related-card-body {
                padding: 12px 14px;
                justify-content: center;
            }
            .related-card-title {
                font-size: 0.85rem;
                -webkit-line-clamp: 2;
            }
            .cta-section {
                padding: 28px 18px;
                border-radius: var(--radius);
            }
            .cta-title {
                font-size: 1.15rem;
            }
            .cta-desc {
                font-size: 0.88rem;
            }
            .btn-cta-primary,
            .btn-cta-outline {
                padding: 11px 22px;
                font-size: 0.85rem;
                width: 100%;
                justify-content: center;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid>div:first-child {
                grid-column: auto;
            }
            .not-found-card {
                padding: 40px 20px;
            }
            .not-found-icon {
                font-size: 3rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .article-category-badge {
                font-size: 0.75rem;
                padding: 4px 10px;
            }
        }

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #1a3a5c;
            --color-primary-light: #234b75;
            --color-primary-dark: #0f2440;
            --color-accent: #c8963e;
            --color-accent-light: #e0b65f;
            --color-accent-dark: #a67a2e;
            --color-bg: #f8f9fb;
            --color-bg-alt: #eef1f6;
            --color-bg-dark: #0d1b2a;
            --color-bg-card: #ffffff;
            --color-text: #1e293b;
            --color-text-secondary: #5f6b7a;
            --color-text-light: #8895a7;
            --color-text-on-dark: #e2e8f0;
            --color-text-on-primary: #ffffff;
            --color-border: #dde3ea;
            --color-border-light: #e9edf2;
            --color-success: #2d9d5a;
            --color-warning: #e8a317;
            --color-danger: #c0392b;
            --color-tag-bg: #eaf1f8;
            --color-tag-text: #1a3a5c;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(15, 36, 64, 0.06);
            --shadow-md: 0 4px 14px rgba(15, 36, 64, 0.08);
            --shadow-lg: 0 8px 28px rgba(15, 36, 64, 0.11);
            --shadow-xl: 0 14px 42px rgba(15, 36, 64, 0.14);
            --shadow-nav: 0 2px 20px rgba(15, 36, 64, 0.09);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
            --max-width: 1200px;
            --nav-height: 68px;
            --nav-height-mobile: 60px;
            --section-gap: 72px;
            --section-gap-mobile: 44px;
        }

        /* ========== 基础重置 ========== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        ul, ol {
            list-style: none;
        }

        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            color: var(--color-text);
            font-weight: 700;
        }

        /* ========== 容器 ========== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
        }

        /* ========== 导航栏 - 吸顶资讯门户风格 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #ffffff;
            box-shadow: var(--shadow-nav);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-lg);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 24px;
        }

        .header-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .header-logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .header-brand-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.3px;
            transition: color var(--transition-fast);
        }
        .header-brand:hover .header-brand-name {
            color: var(--color-accent);
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-main a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.2px;
        }
        .nav-main a:hover {
            color: var(--color-primary);
            background: var(--color-tag-bg);
        }
        .nav-main a.active {
            color: #ffffff;
            background: var(--color-primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26, 58, 92, 0.25);
        }
        .nav-main a.active:hover {
            color: #ffffff;
            background: var(--color-primary-light);
        }

        .header-search-wrap {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--color-bg);
            border: 1.5px solid var(--color-border);
            border-radius: 24px;
            padding: 7px 15px;
            gap: 8px;
            transition: all var(--transition-fast);
            width: 200px;
        }
        .header-search:focus-within {
            border-color: var(--color-accent);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(200, 150, 62, 0.08);
            width: 240px;
        }
        .header-search svg {
            flex-shrink: 0;
            color: var(--color-text-light);
            transition: color var(--transition-fast);
        }
        .header-search:focus-within svg {
            color: var(--color-accent);
        }
        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            width: 100%;
            font-size: 13.5px;
            color: var(--color-text);
        }
        .header-search input::placeholder {
            color: var(--color-text-light);
        }

        .header-hot-tags {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .header-hot-tag {
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 12px;
            background: var(--color-tag-bg);
            color: var(--color-tag-text);
            white-space: nowrap;
            transition: all var(--transition-fast);
        }
        .header-hot-tag:hover {
            background: var(--color-accent);
            color: #fff;
        }

        /* 移动端菜单按钮 */
        .nav-mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .nav-mobile-toggle:hover {
            background: var(--color-bg);
        }
        .nav-mobile-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .nav-mobile-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5.5px, 5.5px);
        }
        .nav-mobile-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-mobile-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5.5px, -5.5px);
        }

        @media (max-width: 1024px) {
            .header-search-wrap {
                display: none;
            }
            .header-hot-tags {
                display: none;
            }
            .nav-mobile-toggle {
                display: flex;
                flex-shrink: 0;
            }
            .nav-main {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 12px 20px 20px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--color-border-light);
                transform: translateY(-110%);
                opacity: 0;
                transition: all var(--transition-base);
                pointer-events: none;
                z-index: 999;
            }
            .nav-main.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-main a {
                border-radius: var(--radius-sm);
                padding: 12px 16px;
                font-size: 15px;
            }
            .header-inner {
                height: var(--nav-height-mobile);
            }
            .header-brand-name {
                font-size: 15px;
            }
            .header-logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .header-brand-name {
                font-size: 14px;
            }
            .header-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }
            .header-inner {
                height: 54px;
            }
            .nav-main {
                top: 54px;
            }
        }

        /* ========== 主内容区域 ========== */
        .main-content {
            flex: 1;
        }

        /* ========== 分类页 Banner ========== */
        .category-banner {
            position: relative;
            background: linear-gradient(160deg, var(--color-primary-dark) 0%, var(--color-primary) 40%, var(--color-primary-light) 100%);
            padding: 56px 0 52px;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 30%;
            opacity: 0.18;
            z-index: 1;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 1;
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        .category-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13.5px;
            color: rgba(255,255,255,0.75);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }
        .category-breadcrumb a {
            color: rgba(255,255,255,0.85);
            transition: color var(--transition-fast);
        }
        .category-breadcrumb a:hover {
            color: var(--color-accent-light);
        }
        .category-breadcrumb .sep {
            color: rgba(255,255,255,0.45);
        }
        .category-breadcrumb .current {
            color: var(--color-accent-light);
            font-weight: 500;
        }
        .category-banner-title {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .category-banner-desc {
            font-size: 16px;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            line-height: 1.6;
        }
        .category-banner-stats {
            display: flex;
            gap: 32px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .category-banner-stat {
            display: flex;
            align-items: baseline;
            gap: 6px;
        }
        .category-banner-stat-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--color-accent-light);
            letter-spacing: -0.5px;
        }
        .category-banner-stat-label {
            font-size: 13px;
            color: rgba(255,255,255,0.7);
        }

        @media (max-width: 768px) {
            .category-banner {
                padding: 40px 0 36px;
            }
            .category-banner-title {
                font-size: 26px;
            }
            .category-banner-desc {
                font-size: 14.5px;
            }
            .category-banner-stats {
                gap: 20px;
            }
            .category-banner-stat-num {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            .category-banner-title {
                font-size: 22px;
            }
            .category-banner-stats {
                gap: 16px;
            }
        }

        /* ========== 板块通用间距 ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-gap-mobile) 0;
            }
        }

        /* ========== 内容列表区 ========== */
        .content-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 36px;
        }
        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        /* 筛选栏 */
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 28px;
            padding-bottom: 18px;
            border-bottom: 1px solid var(--color-border-light);
        }
        .filter-label {
            font-size: 13.5px;
            font-weight: 600;
            color: var(--color-text-secondary);
            margin-right: 4px;
        }
        .filter-chip {
            padding: 7px 15px;
            border-radius: 18px;
            font-size: 13.5px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: var(--color-bg);
            border: 1.5px solid transparent;
            transition: all var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }
        .filter-chip:hover {
            color: var(--color-primary);
            background: var(--color-tag-bg);
            border-color: var(--color-border);
        }
        .filter-chip.active {
            color: #fff;
            background: var(--color-primary);
            border-color: var(--color-primary);
            font-weight: 600;
        }

        /* 文章卡片列表 */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .article-card {
            display: flex;
            gap: 20px;
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 20px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .article-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
            transform: translateY(-2px);
        }
        .article-card-img {
            width: 200px;
            min-width: 200px;
            height: 140px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-bg-alt);
            flex-shrink: 0;
        }
        .article-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-card:hover .article-card-img img {
            transform: scale(1.04);
        }
        .article-card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }
        .article-card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 10px;
            margin-bottom: 8px;
            background: var(--color-tag-bg);
            color: var(--color-tag-text);
            align-self: flex-start;
        }
        .article-card-tag.tag-important {
            background: #fef3e2;
            color: #b87a1a;
        }
        .article-card-tag.tag-new {
            background: #e6f7ee;
            color: #1a6b3c;
        }
        .article-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
            line-height: 1.4;
            transition: color var(--transition-fast);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card:hover .article-card-title {
            color: var(--color-primary);
        }
        .article-card-excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 10px;
            font-size: 12.5px;
            color: var(--color-text-light);
        }
        .article-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        @media (max-width: 768px) {
            .article-card {
                flex-direction: column;
                gap: 14px;
                padding: 16px;
            }
            .article-card-img {
                width: 100%;
                min-width: 100%;
                height: 180px;
            }
            .article-card-title {
                font-size: 16px;
            }
        }
        @media (max-width: 520px) {
            .article-card-img {
                height: 150px;
            }
            .article-card-title {
                font-size: 15px;
            }
            .article-card-excerpt {
                font-size: 13px;
            }
        }

        /* 分页 */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .pagination a, .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 8px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border: 1.5px solid var(--color-border);
            background: #fff;
            transition: all var(--transition-fast);
        }
        .pagination a:hover {
            color: var(--color-primary);
            border-color: var(--color-primary);
            background: var(--color-tag-bg);
        }
        .pagination .active {
            color: #fff;
            background: var(--color-primary);
            border-color: var(--color-primary);
            font-weight: 700;
        }
        .pagination .dots {
            border: none;
            background: transparent;
            cursor: default;
            color: var(--color-text-light);
        }

        /* ========== 侧边栏 ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 22px;
            border: 1px solid var(--color-border-light);
        }
        .sidebar-card-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-primary);
            display: inline-block;
        }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tag {
            padding: 6px 13px;
            border-radius: 16px;
            font-size: 13px;
            font-weight: 500;
            background: var(--color-bg);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .sidebar-tag:hover {
            background: var(--color-tag-bg);
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .sidebar-article-item {
            display: flex;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border-light);
        }
        .sidebar-article-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .sidebar-article-item:first-child {
            padding-top: 0;
        }
        .sidebar-article-num {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-accent);
            flex-shrink: 0;
            width: 28px;
            text-align: center;
            line-height: 1.2;
        }
        .sidebar-article-title {
            font-size: 13.5px;
            font-weight: 500;
            color: var(--color-text);
            line-height: 1.5;
            transition: color var(--transition-fast);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-article-item:hover .sidebar-article-title {
            color: var(--color-primary);
        }

        @media (max-width: 1024px) {
            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }
        @media (max-width: 600px) {
            .sidebar {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 数据展示板块 ========== */
        .stats-section {
            background: var(--color-bg-dark);
            padding: 52px 0;
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(200,150,62,0.12) 0%, transparent 70%);
            border-radius: 50%;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
            z-index: 1;
        }
        .stat-card {
            text-align: center;
            padding: 24px 16px;
            background: rgba(255,255,255,0.04);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255,255,255,0.08);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            background: rgba(255,255,255,0.07);
            border-color: rgba(255,255,255,0.16);
            transform: translateY(-3px);
        }
        .stat-icon {
            font-size: 32px;
            margin-bottom: 10px;
            display: block;
        }
        .stat-number {
            font-size: 34px;
            font-weight: 800;
            color: var(--color-accent-light);
            letter-spacing: -0.5px;
            margin-bottom: 4px;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-number {
                font-size: 26px;
            }
            .stat-icon {
                font-size: 26px;
            }
            .stats-section {
                padding: 36px 0;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 22px;
            }
            .stat-card {
                padding: 16px 10px;
            }
        }

        /* ========== FAQ 板块 ========== */
        .faq-section {
            background: var(--color-bg);
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--color-accent);
            margin-bottom: 8px;
            padding: 4px 12px;
            background: rgba(200,150,62,0.08);
            border-radius: 12px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 500px;
            margin: 0 auto;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--color-text-light);
            transition: all var(--transition-base);
            font-weight: 700;
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 24px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 13px;
            }
        }

        /* ========== CTA 板块 ========== */
        .cta-section {
            background: linear-gradient(150deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            padding: 56px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -70px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-title {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-desc {
            font-size: 15px;
            color: rgba(255,255,255,0.8);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 26px;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-base);
            text-decoration: none;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(200,150,62,0.35);
        }
        .btn-primary:hover {
            background: var(--color-accent-light);
            box-shadow: 0 6px 22px rgba(200,150,62,0.45);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.4);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .cta-title {
                font-size: 22px;
            }
            .cta-section {
                padding: 40px 0;
            }
            .btn {
                padding: 11px 22px;
                font-size: 14px;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand-name {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .footer-desc {
            font-size: 13.5px;
            color: rgba(255,255,255,0.6);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            font-size: 13.5px;
            color: rgba(255,255,255,0.65);
            padding: 5px 0;
            transition: all var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent-light);
            padding-left: 5px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 18px;
            text-align: center;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-grid > div:first-child {
                grid-column: 1 / -1;
            }
            .footer-desc {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer {
                padding: 32px 0 20px;
            }
        }

        /* ========== 回到顶部 ========== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: var(--shadow-md);
            z-index: 900;
            opacity: 0;
            pointer-events: none;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .back-to-top:hover {
            background: var(--color-accent);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }