/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0b1220;
            --primary-light: #1e293b;
            --accent: #e8a33d;
            --accent-dark: #d4922e;
            --accent-light: #fdf3e3;
            --bg-light: #f6f8fb;
            --bg-white: #ffffff;
            --text-dark: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
            --shadow-md: 0 8px 30px rgba(15, 23, 42, .08);
            --shadow-lg: 0 20px 50px rgba(15, 23, 42, .12);
            --spacing-section: 88px;
            --transition-base: all .25s ease;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-base);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(232, 163, 61, .45);
            outline-offset: 2px;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input {
            font-family: inherit;
        }

        /* ===== 容器 ===== */
        .container-site {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 18, 32, .96);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            transition: var(--transition-base);
        }
        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 24px;
        }
        .logo-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .logo-brand .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(232, 163, 61, .3);
        }
        .logo-brand .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            line-height: 1.2;
            white-space: nowrap;
        }
        .logo-brand .logo-text span {
            color: var(--accent);
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .header-nav .nav-link {
            padding: 10px 18px;
            border-radius: var(--radius-full);
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, .72);
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .header-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .08);
        }
        .header-nav .nav-link.active {
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, .1);
            border-radius: var(--radius-full);
            padding: 4px 6px 4px 16px;
            width: 240px;
            border: 1px solid rgba(255, 255, 255, .12);
            transition: var(--transition-base);
        }
        .header-search:focus-within {
            background: rgba(255, 255, 255, .15);
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(232, 163, 61, .15);
        }
        .header-search input {
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: 14px;
            width: 100%;
            padding: 6px 0;
        }
        .header-search input::placeholder {
            color: rgba(255, 255, 255, .4);
        }
        .header-search .search-btn {
            background: var(--accent);
            color: var(--primary);
            border-radius: var(--radius-full);
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: var(--transition-base);
            flex-shrink: 0;
        }
        .header-search .search-btn:hover {
            background: var(--accent-dark);
        }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            position: relative;
            min-height: 640px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(11, 18, 32, .94) 0%, rgba(11, 18, 32, .72) 60%, rgba(30, 41, 59, .55) 100%),
                url('/assets/images/backpic/back-1.png') no-repeat center center / cover;
            color: #fff;
            padding: 80px 0 100px;
        }
        .hero-content {
            max-width: 700px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(232, 163, 61, .15);
            border: 1px solid rgba(232, 163, 61, .4);
            padding: 6px 18px;
            border-radius: var(--radius-full);
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 24px;
        }
        .hero-section h1 {
            font-size: 56px;
            line-height: 1.15;
            font-weight: 800;
            letter-spacing: 2px;
            margin-bottom: 20px;
            color: #fff;
        }
        .hero-section h1 span {
            color: var(--accent);
        }
        .hero-desc {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 36px;
            max-width: 560px;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: var(--primary);
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 16px;
            box-shadow: 0 6px 24px rgba(232, 163, 61, .35);
            transition: var(--transition-base);
            border: none;
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(232, 163, 61, .45);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: #fff;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 16px;
            border: 2px solid rgba(255, 255, 255, .35);
            transition: var(--transition-base);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(232, 163, 61, .08);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 56px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, .12);
            flex-wrap: wrap;
        }
        .hero-stats .stat-item {
            text-align: left;
        }
        .hero-stats .stat-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stats .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, .72);
            margin-top: 2px;
        }

        /* ===== 核心说明 ===== */
        .section-core {
            padding: var(--spacing-section) 0;
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent);
            background: var(--accent-light);
            padding: 4px 14px;
            border-radius: var(--radius-full);
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.25;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .section-subtitle {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.7;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 56px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent) 0%, var(--accent-dark) 100%);
            opacity: 0;
            transition: var(--transition-base);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(232, 163, 61, .3);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 18px;
            background: var(--accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent);
            margin-bottom: 22px;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .feature-card p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-body);
        }

        /* ===== 分类入口 ===== */
        .section-categories {
            padding: var(--spacing-section) 0;
            background: var(--bg-white);
        }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 56px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--primary);
            box-shadow: var(--shadow-md);
            transition: var(--transition-base);
            min-height: 280px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
        }
        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }
        .category-card .cat-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: .45;
            transition: var(--transition-base);
        }
        .category-card:hover .cat-img {
            opacity: .55;
            transform: scale(1.05);
        }
        .category-card .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 20%, rgba(11, 18, 32, .95) 100%);
            z-index: 1;
        }
        .category-card .cat-content {
            position: relative;
            z-index: 2;
            padding: 32px;
            color: #fff;
        }
        .category-card .cat-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            margin-bottom: 12px;
        }
        .category-card .cat-content h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }
        .category-card .cat-content p {
            font-size: 14px;
            color: rgba(255, 255, 255, .78);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
        }
        .category-card .cat-link:hover {
            color: #fff;
            gap: 10px;
        }

        /* ===== 最新信息列表 ===== */
        .section-latest {
            padding: var(--spacing-section) 0;
        }
        .latest-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            margin-top: 48px;
            align-items: start;
        }
        .latest-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
        }
        .news-item:hover {
            border-color: rgba(232, 163, 61, .4);
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .news-badge {
            background: var(--accent-light);
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .news-title {
            flex: 1;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.5;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .news-time {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .empty-state {
            background: var(--bg-white);
            border: 1px dashed var(--border-color);
            border-radius: var(--radius-md);
            padding: 60px 40px;
            text-align: center;
            color: var(--text-muted);
            font-size: 16px;
        }
        .latest-side {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .latest-side::after {
            content: '\f201';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: -20px;
            bottom: -20px;
            font-size: 120px;
            opacity: .08;
        }
        .latest-side h4 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 14px;
            color: #fff;
        }
        .latest-side p {
            font-size: 15px;
            color: rgba(255, 255, 255, .75);
            line-height: 1.8;
            margin-bottom: 24px;
            position: relative;
            z-index: 2;
        }
        .latest-side ul {
            list-style: none;
            padding: 0;
        }
        .latest-side ul li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, .85);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .latest-side ul li:last-child {
            border-bottom: none;
        }
        .latest-side ul li i {
            color: var(--accent);
            margin-top: 4px;
        }

        /* ===== 数据统计 ===== */
        .section-stats {
            padding: 64px 0;
            background: var(--primary);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .section-stats::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent) 0%, transparent 100%);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stats-grid .stat-num {
            font-size: 52px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stats-grid .stat-label {
            font-size: 16px;
            color: rgba(255, 255, 255, .7);
            margin-top: 6px;
            letter-spacing: 1px;
        }

        /* ===== 快速上手流程 ===== */
        .section-process {
            padding: var(--spacing-section) 0;
            background: var(--bg-white);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-top: 56px;
        }
        .process-step {
            text-align: center;
            padding: 24px;
            position: relative;
        }
        .process-step::before {
            content: '';
            position: absolute;
            top: 40px;
            right: -50%;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), transparent);
            z-index: 1;
        }
        .process-step:last-child::before {
            display: none;
        }
        .step-num {
            width: 78px;
            height: 78px;
            margin: 0 auto 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            background: var(--accent);
            box-shadow: 0 8px 24px rgba(232, 163, 61, .3);
            position: relative;
            z-index: 2;
        }
        .process-step h4 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .section-faq {
            padding: var(--spacing-section) 0;
        }
        .faq-wrap {
            max-width: 820px;
            margin: 48px auto 0;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(232, 163, 61, .3);
        }
        .faq-item details {
            padding: 24px 28px;
        }
        .faq-item summary {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f077';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--accent);
            transition: var(--transition-base);
        }
        .faq-item details[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding-top: 16px;
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.75;
            border-top: 1px solid var(--border-color);
            margin-top: 16px;
        }

        /* ===== CTA ===== */
        .section-cta {
            padding: var(--spacing-section) 0;
            background: linear-gradient(135deg, #0b1220 0%, #1e293b 60%, #1a202e 100%);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .section-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') no-repeat center center / cover;
            opacity: .12;
        }
        .section-cta .inner {
            position: relative;
            z-index: 2;
        }
        .section-cta h2 {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .section-cta h2 span {
            color: var(--accent);
        }
        .section-cta p {
            font-size: 18px;
            color: rgba(255, 255, 255, .75);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .section-cta .btn-primary {
            font-size: 18px;
            padding: 16px 40px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #080d18;
            color: rgba(255, 255, 255, .7);
            padding: 64px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-brand .logo-text {
            font-size: 22px;
            margin-bottom: 12px;
            display: block;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 340px;
        }
        .footer-links h5 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links a {
            display: block;
            font-size: 14px;
            padding: 6px 0;
            color: rgba(255, 255, 255, .6);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 24px;
            text-align: center;
            font-size: 14px;
            color: rgba(255, 255, 255, .4);
        }

        /* ===== 移动端底部 Tab ===== */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(11, 18, 32, .97);
            backdrop-filter: blur(14px);
            border-top: 1px solid rgba(255, 255, 255, .08);
            z-index: 200;
            padding: 8px 0;
            justify-content: space-around;
            align-items: center;
        }
        .bottom-tab-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            font-size: 11px;
            color: rgba(255, 255, 255, .6);
            padding: 6px 10px;
            border-radius: var(--radius-md);
            transition: var(--transition-base);
        }
        .bottom-tab-nav a i {
            font-size: 18px;
        }
        .bottom-tab-nav a:hover {
            color: var(--accent);
        }
        .bottom-tab-nav a.active {
            color: var(--accent);
            font-weight: 600;
        }
        .bottom-tab-nav a.active i {
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .container-site {
                padding: 0 24px;
            }
            .header-search {
                width: 180px;
            }
            .hero-section h1 {
                font-size: 44px;
            }
            .feature-grid {
                gap: 24px;
            }
            .category-grid {
                gap: 24px;
                grid-template-columns: repeat(2, 1fr);
            }
            .category-card:last-child {
                grid-column: span 2;
            }
            .latest-layout {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .process-step::before {
                display: none;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 64px;
            }
            .site-header .header-inner {
                height: 64px;
            }
            .header-nav {
                display: none;
            }
            .header-search {
                width: 160px;
            }
            .logo-brand .logo-text {
                font-size: 17px;
            }
            .hero-section {
                min-height: 520px;
                padding: 64px 0 80px;
            }
            .hero-section h1 {
                font-size: 34px;
            }
            .hero-desc {
                font-size: 16px;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 36px;
                padding-top: 24px;
            }
            .hero-stats .stat-num {
                font-size: 26px;
            }
            .section-title {
                font-size: 28px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .category-card:last-child {
                grid-column: span 1;
            }
            .latest-side {
                padding: 28px;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .bottom-tab-nav {
                display: flex;
            }
            body {
                padding-bottom: 64px;
            }
            .section-cta h2 {
                font-size: 30px;
            }
            .faq-item details {
                padding: 18px 20px;
            }
            .news-item {
                flex-wrap: wrap;
                gap: 10px;
                padding: 16px;
            }
            .news-title {
                white-space: normal;
                width: calc(100% - 80px);
                flex: none;
            }
        }
        @media (max-width: 520px) {
            .container-site {
                padding: 0 16px;
            }
            .header-search {
                display: none;
            }
            .logo-brand .logo-text {
                font-size: 16px;
            }
            .hero-section {
                min-height: 480px;
            }
            .hero-section h1 {
                font-size: 28px;
            }
            .hero-btns .btn-primary,
            .hero-btns .btn-outline {
                padding: 12px 24px;
                font-size: 15px;
            }
            .hero-stats .stat-num {
                font-size: 22px;
            }
            .section-title {
                font-size: 24px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid .stat-num {
                font-size: 36px;
            }
            .category-card .cat-content {
                padding: 24px;
            }
            .section-cta h2 {
                font-size: 24px;
            }
        }
        @media (min-width: 769px) {
            .bottom-tab-nav {
                display: none !important;
            }
            body {
                padding-bottom: 0 !important;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #123a6b;
            --primary-light: #1d5fa8;
            --accent: #12b5d8;
            --accent-rgb: 18, 181, 216;
            --bg-body: #f4f7fb;
            --bg-section: #ffffff;
            --text-main: #0f172a;
            --text-weak: #5b6b7f;
            --border: #e2e8f0;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --shadow-sm: 0 4px 16px rgba(15, 76, 158, 0.08);
            --shadow-md: 0 10px 32px rgba(15, 76, 158, 0.12);
            --shadow-lg: 0 22px 50px rgba(15, 76, 158, 0.16);
            --container-w: 1200px;
            --space-section: 5rem;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        .section-head {
            max-width: 640px;
            margin-bottom: 44px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--accent);
            text-transform: uppercase;
            background: rgba(var(--accent-rgb), .08);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 800;
            line-height: 1.25;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.8;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow .3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 6px 24px rgba(2, 12, 27, .08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: 76px;
        }

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

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-weight: 900;
            font-size: 15px;
            letter-spacing: 0;
            box-shadow: 0 8px 18px rgba(18, 58, 107, .3);
        }

        .logo-text {
            font-size: 18px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -0.3px;
        }

        .logo-text span {
            color: var(--accent);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            color: #334155;
            transition: all .25s ease;
            position: relative;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(18, 58, 107, .06);
        }

        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            box-shadow: 0 6px 16px rgba(18, 58, 107, .28);
        }

        .header-search {
            display: flex;
            align-items: center;
            background: #f1f5f9;
            border: 1px solid transparent;
            border-radius: 999px;
            padding: 4px 4px 4px 16px;
            width: 220px;
            transition: all .25s ease;
        }

        .header-search:focus-within {
            border-color: var(--accent);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(var(--accent-rgb), .12);
        }

        .header-search input {
            flex: 1;
            background: transparent;
            font-size: 14px;
            color: var(--text-main);
            min-width: 0;
        }

        .search-btn {
            width: 34px;
            height: 34px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            cursor: pointer;
            transition: transform .2s ease;
        }

        .search-btn:hover {
            transform: scale(1.05);
        }

        .page-hero {
            position: relative;
            padding: 84px 0 96px;
            overflow: hidden;
            color: #fff;
        }

        .hero-bg-img {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(8, 26, 51, .96) 0%, rgba(10, 40, 70, .85) 45%, rgba(18, 181, 216, .35) 100%);
        }

        .hero-overlay::after {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle at 78% 30%, rgba(255, 255, 255, .06) 0, transparent 42%);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 28px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, .8);
            transition: color .2s;
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb i {
            font-size: 11px;
            color: rgba(255, 255, 255, .4);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            backdrop-filter: blur(8px);
            border-radius: 999px;
            padding: 7px 16px;
            font-size: 13px;
            font-weight: 600;
            color: #e0f2fe;
            margin-bottom: 20px;
        }

        .hero-badge i {
            color: #67e8f9;
        }

        .hero-title {
            font-size: clamp(2rem, 4.6vw, 3.4rem);
            font-weight: 900;
            line-height: 1.18;
            letter-spacing: -1px;
            margin-bottom: 18px;
        }

        .hero-title em {
            font-style: normal;
            color: #67e8f9;
        }

        .hero-desc {
            max-width: 540px;
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 44px;
        }

        .btn-primary,
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 14px;
            font-size: 15px;
            font-weight: 700;
            transition: all .25s ease;
            border: 1px solid transparent;
            cursor: pointer;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), #0891b2);
            color: #fff;
            box-shadow: 0 10px 24px rgba(18, 181, 216, .35);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 34px rgba(18, 181, 216, .42);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(255, 255, 255, .22);
            color: #fff;
            backdrop-filter: blur(8px);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, .2);
            transform: translateY(-3px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
        }

        .stat-item .stat-num {
            font-size: 28px;
            font-weight: 900;
            line-height: 1.1;
            color: #fff;
        }

        .stat-item .stat-num small {
            font-size: 15px;
            font-weight: 700;
            color: #67e8f9;
            margin-left: 2px;
        }

        .stat-item .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, .65);
            margin-top: 4px;
        }

        .entry-card {
            background: rgba(255, 255, 255, .1);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: var(--radius-xl);
            padding: 28px;
            box-shadow: var(--shadow-lg);
            color: #fff;
            position: relative;
        }

        .entry-card::before {
            content: "";
            position: absolute;
            top: -1px;
            right: 28px;
            width: 70px;
            height: 6px;
            background: linear-gradient(90deg, var(--accent), #67e8f9);
            border-radius: 0 0 10px 10px;
        }

        .entry-card-head {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 16px;
            padding-bottom: 18px;
            border-bottom: 1px solid rgba(255, 255, 255, .14);
        }

        .entry-card-head i {
            color: #67e8f9;
            font-size: 20px;
        }

        .entry-card-list {
            display: grid;
            gap: 14px;
            margin-top: 20px;
        }

        .entry-card-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }

        .entry-card-row span {
            font-size: 14px;
            color: rgba(255, 255, 255, .72);
        }

        .entry-card-row strong {
            font-weight: 700;
            font-size: 14px;
            color: #fff;
            background: rgba(255, 255, 255, .12);
            padding: 5px 12px;
            border-radius: 999px;
        }

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

        .guide-card {
            background: var(--bg-section);
            border: 1px solid var(--border);
            border-radius: 22px;
            padding: 30px 28px;
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
        }

        .guide-card::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .35s ease;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(var(--accent-rgb), .4);
        }

        .guide-card:hover::after {
            transform: scaleX(1);
        }

        .guide-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(18, 58, 107, .08), rgba(18, 181, 216, .12));
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 20px;
        }

        .guide-card h3 {
            font-size: 19px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 10px;
        }

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

        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .matrix-card {
            background: var(--bg-section);
            border-radius: 22px;
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
        }

        .matrix-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .matrix-media {
            position: relative;
            aspect-ratio: 3 / 2;
            overflow: hidden;
            background: #e2e8f0;
        }

        .matrix-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

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

        .matrix-label {
            position: absolute;
            left: 14px;
            bottom: 14px;
            background: rgba(8, 26, 51, .7);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .2);
        }

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

        .matrix-body h3 {
            font-size: 17px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .matrix-body p {
            font-size: 13.5px;
            color: var(--text-weak);
            line-height: 1.7;
            flex: 1;
        }

        .matrix-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            margin-top: 16px;
            transition: gap .25s ease;
        }

        .matrix-link:hover {
            gap: 12px;
            color: var(--accent);
        }

        .articles-list {
            display: grid;
            gap: 14px;
        }

        .article-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--bg-section);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 18px 22px;
            transition: all .25s ease;
        }

        .article-item:hover {
            border-color: rgba(var(--accent-rgb), .45);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }

        .article-tag {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(18, 58, 107, .08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 999px;
            border: 1px solid rgba(18, 58, 107, .1);
        }

        .article-info {
            flex: 1;
            min-width: 0;
        }

        .article-info h3 {
            font-size: 15.5px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.5;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-info .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 12.5px;
            color: var(--text-weak);
            margin-top: 4px;
        }

        .steps-section {
            background: linear-gradient(180deg, #f4f7fb 0%, #eef4fa 100%);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            position: relative;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 22px;
            padding: 30px 24px 24px;
            transition: all .3s ease;
        }

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

        .step-num {
            font-size: 44px;
            font-weight: 900;
            line-height: 1;
            color: transparent;
            -webkit-text-stroke: 2px var(--primary);
            opacity: .8;
            margin-bottom: 16px;
            display: block;
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 13.5px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: grid;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: all .25s ease;
        }

        .faq-item[open] {
            border-color: rgba(var(--accent-rgb), .4);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            list-style: none;
        }

        .faq-question::-webkit-details-marker {
            display: none;
        }

        .faq-question i {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(18, 58, 107, .06);
            border-radius: 999px;
            font-size: 13px;
            color: var(--primary);
            transition: transform .3s ease;
        }

        .faq-item[open] .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 24px 20px;
            font-size: 14.5px;
            color: var(--text-weak);
            line-height: 1.8;
            border-top: 1px dashed var(--border);
            padding-top: 16px;
            margin-top: 2px;
        }

        .cta-section {
            position: relative;
            padding: 0;
            overflow: hidden;
        }

        .cta-box {
            position: relative;
            margin: var(--space-section) 0;
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            color: #fff;
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg, rgba(8, 26, 51, .96) 0%, rgba(18, 58, 107, .9) 55%, rgba(18, 181, 216, .45) 100%);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 560px;
        }

        .cta-content h2 {
            font-size: clamp(1.7rem, 3.2vw, 2.5rem);
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 14px;
        }

        .cta-content p {
            font-size: 15px;
            color: rgba(255, 255, 255, .8);
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .site-footer {
            background: #0b1d33;
            color: #b8c7d9;
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 44px;
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: #8aa0b8;
            margin-top: 16px;
            max-width: 320px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
            letter-spacing: 1px;
        }

        .footer-links a {
            font-size: 14px;
            color: #8aa0b8;
            transition: color .2s, padding-left .2s;
        }

        .footer-links a:hover {
            color: #67e8f9;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #61778f;
        }

        .bottom-tabbar {
            display: none;
        }

        @media (min-width: 1024px) {
            .bottom-tabbar {
                display: none !important;
            }
        }

        @media (max-width: 1023px) {
            :root {
                --space-section: 3.8rem;
            }

            body {
                padding-bottom: 0;
            }

            .header-nav,
            .header-search {
                display: none;
            }

            .bottom-tabbar {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                z-index: 100;
                background: rgba(255, 255, 255, .96);
                backdrop-filter: blur(16px);
                border-top: 1px solid var(--border);
                padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
                box-shadow: 0 -6px 20px rgba(2, 12, 27, .06);
            }

            .tab-item {
                flex: 1;
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 3px;
                padding: 8px 4px;
                border-radius: 14px;
                font-size: 11px;
                font-weight: 600;
                color: #64748b;
                transition: all .2s ease;
            }

            .tab-item i {
                font-size: 17px;
                transition: transform .2s ease;
            }

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

            .tab-item.active {
                color: var(--primary);
                background: rgba(18, 58, 107, .06);
            }

            .tab-item.active i {
                transform: translateY(-2px);
            }

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

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

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

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

            .cta-box {
                padding: 40px 24px;
                margin: var(--space-section) 0;
            }

            .article-item {
                flex-wrap: wrap;
                gap: 10px;
            }

            .article-info h3 {
                white-space: normal;
            }
        }

        @media (max-width: 640px) {
            .container-site {
                padding: 0 16px;
            }

            .header-inner {
                height: 66px;
            }

            .logo-text {
                font-size: 16px;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                border-radius: 10px;
                font-size: 13px;
            }

            .page-hero {
                padding: 56px 0 64px;
            }

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

            .btn-primary,
            .btn-secondary {
                width: 100%;
            }

            .hero-stats {
                gap: 20px;
            }

            .stat-item .stat-num {
                font-size: 22px;
            }

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

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

            .cta-content h2 {
                font-size: 1.5rem;
            }

            .article-item {
                border-radius: 14px;
                padding: 16px;
            }

            .article-tag {
                font-size: 11px;
            }
        }

/* roulang page: article */
:root {
            --primary: #0b1526;
            --primary-light: #1e3a5f;
            --accent: #d4a851;
            --accent-light: #f0cf7a;
            --bg: #f5f7fb;
            --bg-dark: #0a1428;
            --text: #1f2937;
            --text-weak: #6b7280;
            --border: #e5e7eb;
            --radius: 14px;
            --radius-sm: 10px;
            --shadow: 0 8px 30px rgba(2, 12, 27, .08);
            --shadow-hover: 0 16px 40px rgba(2, 12, 27, .14);
        }

        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
        }
        a { text-decoration: none; color: inherit; }
        img { max-width: 100%; display: block; }
        button, input { font: inherit; border: none; outline: none; }
        ul, ol { margin: 0; padding: 0; }
        h1, h2, h3, h4, h5, h6 { margin: 0; line-height: 1.3; }

        .container-site {
            width: min(1200px, 92%);
            margin-inline: auto;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, #1a3a6b, #0b1526);
            color: #f0cf7a;
            display: grid;
            place-items: center;
            font-weight: 800;
            font-size: 15px;
            letter-spacing: .5px;
            box-shadow: 0 4px 12px rgba(11, 21, 38, .25);
        }
        .logo-text {
            font-size: 19px;
            font-weight: 800;
            color: #0b1526;
            letter-spacing: .5px;
            white-space: nowrap;
        }
        .logo-text span { color: #d4a851; }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 600;
            color: #334155;
            padding: 8px 2px;
            position: relative;
            transition: color .2s;
            white-space: nowrap;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0; bottom: 0;
            width: 100%; height: 3px;
            background: var(--accent);
            border-radius: 3px;
            transform: scaleX(0);
            transition: transform .25s;
        }
        .nav-link:hover { color: var(--primary); }
        .nav-link:hover::after,
        .nav-link.active::after { transform: scaleX(1); }
        .nav-link.active { color: var(--primary); }
        .header-search {
            display: flex;
            align-items: center;
            background: #f1f5f9;
            border-radius: 40px;
            padding: 4px 4px 4px 16px;
            border: 1px solid transparent;
            transition: border-color .2s;
        }
        .header-search:focus-within { border-color: var(--accent); }
        .header-search input {
            border: none;
            background: transparent;
            width: 150px;
            font-size: 14px;
            color: var(--primary);
        }
        .header-search input::placeholder { color: #94a3b8; }
        .search-btn {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--accent-light);
            cursor: pointer;
            transition: opacity .2s;
        }
        .search-btn:hover { opacity: .85; }

        .mobile-tabbar { display: none; }

        .article-banner {
            position: relative;
            padding: 76px 0 84px;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            color: #fff;
        }
        .article-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(7, 13, 26, .94) 0%, rgba(7, 13, 26, .8) 55%, rgba(7, 13, 26, .5) 100%);
        }
        .article-banner .container-site { position: relative; z-index: 2; }
        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: rgba(255, 255, 255, .75);
            background: rgba(255, 255, 255, .12);
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .breadcrumb a { transition: color .2s; }
        .breadcrumb a:hover { color: var(--accent-light); }
        .banner-category {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--accent-light);
            background: rgba(212, 168, 81, .16);
            border: 1px solid rgba(212, 168, 81, .4);
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        .banner-title {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            line-height: 1.25;
            max-width: 860px;
            margin-bottom: 18px;
        }
        .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 22px;
            font-size: 14px;
            color: rgba(255, 255, 255, .8);
        }
        .banner-meta i { color: var(--accent); margin-right: 6px; }

        .article-section {
            padding: 64px 0 80px;
        }
        .article-wrap {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 48px;
            align-items: start;
        }
        .article-main {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 48px;
        }
        .article-content {
            font-size: 16px;
            line-height: 1.9;
            color: #374151;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 1.6em 0 .8em;
            color: var(--primary);
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 1.4em 0 .6em;
            color: var(--primary);
        }
        .article-content p { margin-bottom: 1.4em; }
        .article-content ul { padding-left: 1.4em; margin-bottom: 1.4em; }
        .article-content li { margin-bottom: .5em; }
        .article-content a { color: #b8892f; text-decoration: underline; }
        .article-content img { border-radius: 10px; margin: 1.5em 0; }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            padding: 14px 20px;
            background: #f8fafc;
            border-radius: 0 10px 10px 0;
            margin: 1.4em 0;
            color: #475569;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-light);
            background: rgba(30, 58, 95, .07);
            padding: 6px 16px;
            border-radius: 30px;
            transition: background .2s;
        }
        .tag:hover { background: rgba(212, 168, 81, .18); }

        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 24px;
        }
        .article-share span {
            font-size: 14px;
            color: var(--text-weak);
            margin-right: 4px;
        }
        .share-btn {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: #f1f5f9;
            color: var(--primary);
            display: grid;
            place-items: center;
            cursor: pointer;
            transition: background .2s, color .2s, transform .2s;
        }
        .share-btn:hover {
            background: var(--primary);
            color: var(--accent-light);
            transform: translateY(-2px);
        }

        .article-side {
            position: sticky;
            top: 96px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .side-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px;
        }
        .side-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--primary);
            position: relative;
            padding-left: 14px;
        }
        .side-card h3::before {
            content: "";
            position: absolute;
            left: 0; top: 4px; bottom: 4px;
            width: 4px;
            border-radius: 4px;
            background: linear-gradient(to bottom, var(--accent), #a97f2f);
        }
        .side-list { list-style: none; }
        .side-list li {
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
        }
        .side-list li:last-child { border-bottom: none; }
        .side-list a {
            font-size: 14px;
            font-weight: 600;
            color: #334155;
            transition: color .2s, padding-left .2s;
            display: block;
        }
        .side-list a:hover {
            color: var(--accent);
            padding-left: 6px;
        }
        .side-accent {
            border: 1px solid rgba(212, 168, 81, .35);
            position: relative;
            overflow: hidden;
        }
        .side-accent::before {
            content: "";
            position: absolute;
            top: -40px; right: -40px;
            width: 120px; height: 120px;
            border-radius: 50%;
            background: rgba(212, 168, 81, .08);
        }
        .side-accent p {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 18px;
            position: relative;
            z-index: 2;
        }
        .btn-side {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 30px;
            transition: background .2s, transform .2s;
            position: relative;
            z-index: 2;
        }
        .btn-side:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        .not-found {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found .icon-circle {
            width: 84px;
            height: 84px;
            border-radius: 50%;
            background: rgba(212, 168, 81, .12);
            color: var(--accent);
            display: grid;
            place-items: center;
            font-size: 36px;
            margin: 0 auto 24px;
        }
        .not-found h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .not-found p {
            color: var(--text-weak);
            margin-bottom: 30px;
            font-size: 15px;
        }

        .category-section {
            padding: 80px 0;
            background: #fff;
            border-top: 1px solid var(--border);
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }
        .section-tag {
            display: inline-block;
            font-size: 12px;
            letter-spacing: 2px;
            font-weight: 700;
            color: var(--accent);
            text-transform: uppercase;
            padding: 6px 16px;
            border-radius: 30px;
            background: rgba(212, 168, 81, .1);
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .section-desc {
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.8;
        }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .category-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: transform .25s, box-shadow .25s;
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .category-card .cover {
            overflow: hidden;
            aspect-ratio: 16 / 9;
            position: relative;
        }
        .category-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s;
        }
        .category-card:hover .cover img { transform: scale(1.05); }
        .category-card .card-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .category-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .category-card p {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 16px;
            flex: 1;
        }
        .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color .2s;
        }
        .card-link i { transition: transform .2s; }
        .card-link:hover {
            color: var(--accent);
        }
        .card-link:hover i { transform: translateX(4px); }

        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #0b1526 0%, #14294a 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: .08;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
            color: #fff;
        }
        .cta-inner h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, .75);
            margin: 0 0 30px;
            font-size: 15px;
        }
        .cta-btn-group {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 40px;
            background: linear-gradient(135deg, var(--accent), #b8892f);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            transition: opacity .2s, transform .2s;
        }
        .btn-accent:hover {
            opacity: .9;
            transform: translateY(-2px);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 32px;
            border-radius: 40px;
            border: 1px solid rgba(255, 255, 255, .4);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            transition: background .2s, transform .2s;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-2px);
        }

        .site-footer {
            background: #0b1526;
            color: rgba(255, 255, 255, .72);
            padding-top: 64px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
        }
        .footer-brand .logo-text span { color: var(--accent); }
        .footer-brand p {
            font-size: 14px;
            margin-top: 14px;
            line-height: 1.8;
            max-width: 360px;
        }
        .footer-links h5 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 16px;
        }
        .footer-links a {
            display: block;
            font-size: 14px;
            padding: 6px 0;
            transition: color .2s;
        }
        .footer-links a:hover { color: var(--accent-light); }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 22px 0;
            text-align: center;
            font-size: 14px;
            color: rgba(255, 255, 255, .5);
        }

        @media (max-width: 1024px) {
            .article-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-side {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .side-card {
                flex: 1;
                min-width: 240px;
            }
            .category-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            .header-nav,
            .header-search { display: none; }
            .mobile-tabbar {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, .98);
                border-top: 1px solid var(--border);
                z-index: 200;
                padding: 6px 8px calc(8px + env(safe-area-inset-bottom));
                justify-content: space-around;
                box-shadow: 0 -4px 20px rgba(2, 12, 27, .06);
                backdrop-filter: blur(12px);
            }
            .tab-item {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 3px;
                font-size: 11px;
                font-weight: 600;
                color: var(--text-weak);
                padding: 4px 6px;
                border-radius: 10px;
                transition: color .2s;
                flex: 1;
                max-width: 100px;
            }
            .tab-item i { font-size: 18px; }
            .tab-item:hover { color: var(--primary); }
            body { padding-bottom: 64px; }
            .header-inner { height: 64px; }
            .logo-text { font-size: 17px; }

            .article-banner { padding: 48px 0 56px; }
            .banner-title { font-size: 26px; }
            .banner-meta { gap: 14px; flex-direction: column; gap: 8px; }

            .article-section { padding: 40px 0 56px; }
            .article-main { padding: 28px 20px; }
            .article-content { font-size: 15px; }

            .category-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-section { padding: 56px 0; }
            .section-title { font-size: 24px; }

            .cta-section { padding: 56px 0; }
            .cta-inner h2 { font-size: 24px; }
            .cta-btn-group { flex-direction: column; align-items: center; }

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

        @media (max-width: 520px) {
            .container-site { width: 90%; }
            .logo-icon { width: 38px; height: 38px; font-size: 14px; }
            .logo-text { font-size: 16px; }
            .article-main { padding: 24px 16px; }
            .side-card { min-width: 100%; }
            .article-tags { gap: 8px; }
            .tag { font-size: 12px; padding: 5px 12px; }
            .share-btn { width: 34px; height: 34px; }
        }

/* roulang page: category2 */
:root {
    --primary: #0d9488;
    --primary-dark: #0f766e;
    --primary-light: #ccfbf1;
    --accent: #f59e0b;
    --ink: #0f172a;
    --ink-soft: #334155;
    --ink-mute: #64748b;
    --surface: #f8fafc;
    --line: #e2e8f0;
    --radius: 16px;
    --shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
    --shadow-hover: 0 12px 32px rgba(15, 23, 42, 0.12);
    --space-section: 72px;
  }

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

  html { scroll-behavior: smooth; }

  body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    background: var(--surface);
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

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

  a { text-decoration: none; color: inherit; transition: color 0.2s ease; }

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

  input:focus, button:focus, a:focus { outline: 2px solid rgba(13, 148, 136, 0.4); outline-offset: 2px; }

  .container-site { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

  @media (max-width: 640px) { .container-site { padding-left: 16px; padding-right: 16px; } }

  /* ===== Header ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.7);
    box-shadow: 0 1px 12px rgba(15, 23, 42, 0.04);
  }

  .header-inner { display: flex; align-items: center; height: 72px; gap: 40px; }

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

  .logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, #0d9488, #0f766e);
    color: #fff;
    font-weight: 800;
    font-size: 14px;
    border-radius: 12px;
    letter-spacing: -0.5px;
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
  }

  .logo-text { font-size: 20px; font-weight: 700; color: var(--ink); line-height: 1.2; }
  .logo-text span { color: var(--primary); }

  .header-nav { display: flex; align-items: center; gap: 28px; flex: 1; }

  .nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--ink-soft);
    padding: 8px 2px;
    position: relative;
    white-space: nowrap;
    transition: color 0.2s ease;
  }

  .nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s ease;
  }

  .nav-link:hover { color: var(--primary); }
  .nav-link:hover::after { transform: scaleX(1); }
  .nav-link.active { color: var(--primary); font-weight: 600; }
  .nav-link.active::after { transform: scaleX(1); }

  .header-search { display: flex; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 4px 4px 4px 16px; transition: border-color 0.2s ease, box-shadow 0.2s ease; }

  .header-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15); }

  .header-search input { border: none; background: transparent; font-size: 14px; color: var(--ink); width: 120px; outline: none; }

  .header-search input::placeholder { color: var(--ink-mute); }

  .search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    transition: background 0.2s ease, transform 0.2s ease;
  }

  .search-btn:hover { background: var(--primary-dark); transform: scale(1.05); }

  /* ===== Mobile Bottom Tab ===== */
  .mobile-tabs {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 200;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--line);
    padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
    box-shadow: 0 -4px 20px rgba(15, 23, 42, 0.06);
  }

  .mobile-tabs-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; }

  .mobile-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 2px;
    border-radius: 12px;
    font-size: 11px;
    color: var(--ink-mute);
    transition: color 0.2s ease, background 0.2s ease;
  }

  .mobile-tab i { font-size: 18px; }

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

  /* ===== Hero Banner ===== */
  .cat-hero {
    position: relative;
    padding: 88px 0 72px;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(13, 148, 136, 0.85)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    color: #fff;
  }

  .cat-hero-inner { position: relative; z-index: 2; max-width: 860px; }

  .cat-hero .breadcrumb { font-size: 13px; color: rgba(255, 255, 255, 0.75); margin-bottom: 16px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

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

  .cat-hero h1 { font-size: 44px; font-weight: 800; line-height: 1.18; letter-spacing: -1px; margin-bottom: 16px; }

  .cat-hero h1 .highlight { color: #5eead4; }

  .cat-hero p { font-size: 17px; color: rgba(255, 255, 255, 0.85); max-width: 640px; margin-bottom: 32px; }

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

  .hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 999px;
    padding: 8px 18px;
    font-size: 14px;
    color: #fff;
    transition: background 0.2s ease, transform 0.2s ease;
  }

  .hero-tag:hover { background: rgba(255, 255, 255, 0.26); transform: translateY(-2px); }

  /* ===== Section Layout ===== */
  .section-block { padding: var(--space-section) 0; }
  .section-block--gray { background: #ffffff; }
  .section-block--dark { background: var(--ink); color: #fff; }

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

  .section-head .eyebrow {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 8px;
  }

  .section-head h2 { font-size: 32px; font-weight: 800; line-height: 1.25; letter-spacing: -0.5px; }

  .section-head p { color: var(--ink-mute); margin-top: 8px; max-width: 600px; }

  .section-head--dark .eyebrow { color: #5eead4; }
  .section-head--dark h2 { color: #fff; }
  .section-head--dark p { color: rgba(255, 255, 255, 0.65); }

  /* ===== Feature Cards ===== */
  .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

  .feature-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }

  .feature-card .card-img-wrap { position: relative; overflow: hidden; aspect-ratio: 16 / 10; }

  .feature-card .card-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }

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

  .card-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(13, 148, 136, 0.92);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    letter-spacing: 0.5px;
  }

  .card-badge--accent { background: rgba(245, 158, 11, 0.95); }

  .feature-card .card-body { padding: 20px; }

  .feature-card .card-meta { font-size: 13px; color: var(--ink-mute); display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }

  .feature-card .card-meta i { font-size: 14px; }

  .feature-card h3 { font-size: 18px; font-weight: 700; line-height: 1.4; margin-bottom: 10px; }

  .feature-card h3 a { color: var(--ink); }
  .feature-card h3 a:hover { color: var(--primary); }

  .feature-card .card-desc { font-size: 14px; color: var(--ink-soft); line-height: 1.6; margin-bottom: 14px; }

  .card-footer { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; border-top: 1px solid var(--line); }

  .card-tag { font-size: 13px; color: var(--primary); font-weight: 600; background: var(--primary-light); padding: 4px 10px; border-radius: 6px; }

  .card-link { font-size: 14px; font-weight: 600; color: var(--ink); display: inline-flex; align-items: center; gap: 4px; transition: color 0.2s ease, gap 0.2s ease; }

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

  /* ===== Schedule ===== */
  .schedule-wrap { background: #fff; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; box-shadow: var(--shadow); }

  .schedule-tabs { display: flex; border-bottom: 1px solid var(--line); background: var(--surface); overflow-x: auto; }

  .schedule-tab {
    padding: 16px 28px;
    font-size: 15px;
    font-weight: 600;
    color: var(--ink-mute);
    border-bottom: 3px solid transparent;
    white-space: nowrap;
    transition: color 0.2s ease, border-color 0.2s ease;
  }

  .schedule-tab:hover { color: var(--primary); }
  .schedule-tab.active { color: var(--primary); border-bottom-color: var(--primary); }

  .schedule-list { padding: 8px 0; }

  .schedule-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 18px 28px;
    border-bottom: 1px solid #f1f5f9;
    transition: background 0.2s ease;
  }

  .schedule-item:last-child { border-bottom: none; }
  .schedule-item:hover { background: #f8fafc; }

  .schedule-time { display: flex; flex-direction: column; min-width: 84px; }

  .schedule-time .date { font-size: 15px; font-weight: 700; color: var(--ink); }

  .schedule-time .week { font-size: 12px; color: var(--ink-mute); }

  .schedule-teams { flex: 1; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }

  .schedule-team { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px; }

  .schedule-vs { color: var(--ink-mute); font-size: 13px; font-weight: 700; padding: 4px 12px; background: var(--surface); border-radius: 20px; }

  .schedule-status { font-size: 13px; font-weight: 600; color: var(--primary); background: var(--primary-light); padding: 6px 16px; border-radius: 999px; white-space: nowrap; }

  .schedule-status--accent { color: #b45309; background: #fef3c7; }

  .schedule-status--mute { color: var(--ink-mute); background: var(--surface); }

  /* ===== Rank List ===== */
  .rank-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

  .rank-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

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

  .rank-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }

  .rank-card h3 i { color: var(--accent); }

  .rank-item { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px dashed var(--line); }

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

  .rank-num {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 700;
    background: var(--surface);
    color: var(--ink-mute);
  }

  .rank-num.top { background: linear-gradient(135deg, #f59e0b, #d97706); color: #fff; }

  .rank-name { flex: 1; font-weight: 600; font-size: 14px; color: var(--ink); }

  .rank-stat { font-size: 14px; color: var(--primary); font-weight: 700; }

  .rank-sub { font-size: 12px; color: var(--ink-mute); }

  /* ===== News List ===== */
  .news-layout { display: grid; grid-template-columns: 1fr 400px; gap: 32px; }

  .news-list { display: flex; flex-direction: column; gap: 20px; }

  .news-item {
    display: flex;
    gap: 20px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 16px;
    transition: box-shadow 0.25s ease, transform 0.25s ease;
  }

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

  .news-item .news-thumb { width: 140px; height: 100px; border-radius: 10px; overflow: hidden; flex-shrink: 0; }

  .news-item .news-thumb img { width: 100%; height: 100%; object-fit: cover; }

  .news-item .news-content { flex: 1; }

  .news-item h3 { font-size: 16px; font-weight: 700; line-height: 1.4; margin-bottom: 6px; }

  .news-item h3 a:hover { color: var(--primary); }

  .news-item p { font-size: 13px; color: var(--ink-mute); line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

  .news-meta { display: flex; align-items: center; gap: 14px; font-size: 12px; color: var(--ink-mute); margin-top: 10px; }

  .news-sidebar { display: flex; flex-direction: column; gap: 20px; }

  .sidebar-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 20px; box-shadow: var(--shadow); }

  .sidebar-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 2px solid var(--primary-light); position: relative; }

  .sidebar-card h3::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 40px; height: 2px; background: var(--primary); }

  .sidebar-list { list-style: none; }

  .sidebar-list li { padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 14px; }

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

  .sidebar-list li a { color: var(--ink-soft); display: flex; justify-content: space-between; align-items: center; transition: color 0.2s ease; }

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

  .sidebar-list li a .hot-num { font-size: 12px; color: var(--accent); font-weight: 700; }

  .sidebar-tags { display: flex; flex-wrap: wrap; gap: 8px; }

  .sidebar-tags a {
    display: inline-block;
    font-size: 13px;
    color: var(--ink-soft);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 6px 12px;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  }

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

  /* ===== FAQ ===== */
  .faq-wrap { max-width: 860px; margin: 0 auto; }

  .faq-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 14px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: box-shadow 0.25s ease;
  }

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

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

  .faq-question i { color: var(--primary); transition: transform 0.3s ease; font-size: 18px; flex-shrink: 0; }

  .faq-item.open .faq-question i { transform: rotate(180deg); }

  .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }

  .faq-answer-inner { padding: 0 24px 20px; font-size: 14px; color: var(--ink-soft); line-height: 1.7; }

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

  /* ===== CTA ===== */
  .cta-section {
    position: relative;
    padding: 72px 0;
    background: linear-gradient(120deg, rgba(15, 23, 42, 0.9), rgba(13, 148, 136, 0.85)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    color: #fff;
    text-align: center;
  }

  .cta-section h2 { font-size: 32px; font-weight: 800; margin-bottom: 12px; }

  .cta-section p { font-size: 16px; color: rgba(255, 255, 255, 0.8); max-width: 560px; margin: 0 auto 28px; }

  .cta-btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #14b8a6;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    padding: 14px 32px;
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(20, 184, 166, 0.4);
    transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  }

  .btn-primary:hover { background: #0d9488; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(20, 184, 166, 0.5); }

  .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    padding: 14px 32px;
    border-radius: 10px;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  }

  .btn-outline:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; transform: translateY(-2px); }

  /* ===== Footer ===== */
  .site-footer { background: var(--ink); color: #cbd5e1; padding: 60px 0 100px; }

  .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }

  .footer-brand .logo-text { color: #fff; font-size: 22px; display: block; margin-bottom: 14px; }
  .footer-brand .logo-text span { color: #5eead4; }
  .footer-brand p { font-size: 14px; line-height: 1.7; color: #94a3b8; max-width: 340px; }

  .footer-links h5 { font-size: 16px; color: #fff; font-weight: 600; margin-bottom: 16px; }

  .footer-links a {
    display: block;
    font-size: 14px;
    color: #94a3b8;
    padding: 6px 0;
    transition: color 0.2s ease, padding-left 0.2s ease;
  }

  .footer-links a:hover { color: #5eead4; padding-left: 6px; }

  .footer-bottom { padding-top: 28px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

  .footer-bottom p { font-size: 13px; color: #64748b; }

  /* ===== Responsive ===== */
  @media (max-width: 1024px) {
    .header-nav { gap: 18px; }
    .header-search { display: none; }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .news-layout { grid-template-columns: 1fr; }
  }

  @media (max-width: 768px) {
    .header-inner { height: 64px; gap: 16px; }
    .header-nav { display: none; }
    .logo-text { font-size: 17px; }
    .logo-icon { width: 36px; height: 36px; font-size: 12px; }
    .cat-hero { padding: 64px 0 48px; }
    .cat-hero h1 { font-size: 30px; }
    .cat-hero p { font-size: 15px; }
    .section-block { --space-section: 56px; }
    .section-head h2 { font-size: 24px; }
    .feature-grid { grid-template-columns: 1fr; gap: 16px; }
    .rank-grid { grid-template-columns: 1fr; }
    .schedule-item { flex-direction: column; align-items: flex-start; gap: 12px; padding: 16px 20px; }
    .schedule-teams { width: 100%; }
    .schedule-status { align-self: flex-start; }
    .news-item { flex-direction: column; }
    .news-item .news-thumb { width: 100%; height: 160px; }
    .faq-question { font-size: 15px; padding: 16px 18px; }
    .faq-answer-inner { padding: 0 18px 16px; }
    .cta-section h2 { font-size: 24px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { justify-content: center; text-align: center; }
    .site-footer { padding-bottom: 90px; }
    .mobile-tabs { display: block; }
  }

  @media (max-width: 520px) {
    .container-site { padding-left: 14px; padding-right: 14px; }
    .cat-hero h1 { font-size: 26px; }
    .hero-tag { font-size: 13px; padding: 6px 14px; }
    .schedule-tab { padding: 12px 16px; font-size: 13px; }
    .schedule-team { font-size: 14px; }
    .btn-primary, .btn-outline { width: 100%; justify-content: center; padding: 14px 20px; }
  }

/* roulang page: category3 */
/* ===== design variables ===== */
        :root {
            --primary: #1a41d8;
            --primary-dark: #14319e;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-light: #f6f8fc;
            --bg-white: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.10);
            --container-w: 1200px;
            --header-h: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Noto Sans SC', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            background: var(--bg-light);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 16px;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color .25s;
        }

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

        input,
        button {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

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

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), #4f6ef7);
            color: #fff;
            font-weight: 900;
            font-size: 15px;
            border-radius: 10px;
            letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(26, 65, 216, 0.35);
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.3px;
        }

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

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

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            transition: all .25s;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 65, 216, 0.06);
        }

        .nav-link.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 2px 8px rgba(26, 65, 216, 0.3);
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 0 4px 0 16px;
            height: 40px;
            width: 220px;
            transition: all .25s;
        }

        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 65, 216, 0.12);
        }

        .header-search input {
            flex: 1;
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: var(--text-main);
            min-width: 0;
        }

        .search-btn {
            width: 32px;
            height: 32px;
            border: none;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: background .25s;
        }

        .search-btn:hover {
            background: var(--primary-dark);
        }

        /* ===== page hero ===== */
        .page-hero {
            position: relative;
            padding: 72px 0 64px;
            background-size: cover;
            background-position: center;
            color: #fff;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 20, 50, 0.92), rgba(26, 65, 216, 0.76), rgba(245, 158, 11, 0.35));
        }

        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: .5px;
            margin-bottom: 20px;
        }

        .hero-badge i {
            color: var(--accent-light);
        }

        .page-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            opacity: .85;
            margin-bottom: 20px;
        }

        .page-breadcrumb a {
            color: rgba(255, 255, 255, 0.95);
        }

        .page-breadcrumb a:hover {
            color: #fff;
        }

        .page-breadcrumb i {
            font-size: 10px;
        }

        .page-hero h1 {
            font-size: 38px;
            font-weight: 900;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .page-hero p {
            font-size: 16px;
            opacity: .92;
            max-width: 560px;
            margin-bottom: 32px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #1e293b;
            font-weight: 700;
            padding: 12px 28px;
            border-radius: 12px;
            font-size: 15px;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
            transition: all .25s;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.45);
            color: #0f172a;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 12px;
            font-size: 15px;
            transition: all .25s;
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
        }

        /* ===== section ===== */
        .section-block {
            padding: 72px 0;
        }

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

        .section-head {
            margin-bottom: 44px;
            max-width: 720px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-tag {
            display: inline-block;
            background: rgba(26, 65, 216, 0.08);
            color: var(--primary);
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 28px;
            font-weight: 900;
            color: var(--text-main);
            letter-spacing: -0.3px;
            line-height: 1.35;
        }

        .section-head p {
            color: var(--text-muted);
            margin-top: 12px;
            font-size: 15px;
        }

        /* ===== stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stats-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: all .3s;
        }

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

        .stats-number {
            font-size: 36px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--primary), #4f6ef7);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stats-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== service cards ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .service-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: all .3s;
            position: relative;
            overflow: hidden;
        }

        .service-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .35s;
        }

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

        .service-card:hover::after {
            transform: scaleX(1);
        }

        .service-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            background: rgba(26, 65, 216, 0.08);
            color: var(--primary);
        }

        .service-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

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

        /* ===== features ===== */
        .feature-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .feature-images {
            position: relative;
            padding-bottom: 20px;
        }

        .feature-img-main {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .feature-img-main img {
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }

        .feature-img-float {
            position: absolute;
            right: -12px;
            bottom: -18px;
            width: 45%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 4px solid #fff;
            box-shadow: var(--shadow-lg);
        }

        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .feature-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .feature-item .f-icon {
            width: 42px;
            height: 42px;
            min-width: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #4f6ef7);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            box-shadow: 0 4px 12px rgba(26, 65, 216, 0.3);
        }

        .feature-item h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
        }

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

        /* ===== process ===== */
        .process-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .process-step {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            border: 1px solid var(--border-color);
            position: relative;
            transition: all .3s;
        }

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

        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            margin-bottom: 16px;
            box-shadow: 0 4px 12px rgba(26, 65, 216, 0.3);
        }

        .process-step h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }

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

        .guarantee-item {
            display: flex;
            gap: 14px;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all .3s;
        }

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

        .guarantee-item .g-icon {
            width: 40px;
            height: 40px;
            min-width: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent);
        }

        .guarantee-item h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 2px;
        }

        .guarantee-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* ===== faq ===== */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .3s;
        }

        .faq-item.active {
            box-shadow: var(--shadow-md);
            border-color: rgba(26, 65, 216, 0.2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            transition: background .2s;
            gap: 16px;
        }

        .faq-question:hover {
            background: rgba(26, 65, 216, 0.02);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            min-width: 28px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            transition: all .3s;
            color: var(--text-muted);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
            padding: 0 22px;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 260px;
            padding-bottom: 20px;
        }

        /* ===== cta ===== */
        .cta-section {
            position: relative;
            padding: 64px 0;
            border-radius: var(--radius-xl);
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 23, 42, 0.92), rgba(26, 65, 216, 0.78));
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            max-width: 620px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-content p {
            font-size: 15px;
            opacity: .9;
            margin-bottom: 24px;
        }

        /* ===== footer ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding-top: 64px;
            margin-top: 72px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
            font-weight: 800;
        }

        .footer-brand p {
            margin-top: 14px;
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-links h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-links a {
            display: block;
            color: #94a3b8;
            font-size: 14px;
            padding: 6px 0;
            transition: all .2s;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: #64748b;
        }

        /* ===== mobile bottom nav ===== */
        .mobile-bottom-nav {
            display: none;
        }

        /* ===== responsive ===== */
        @media (max-width: 1024px) {
            .header-search {
                display: none;
            }

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

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

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

        @media (max-width: 768px) {
            .header-nav {
                display: none;
            }

            .mobile-bottom-nav {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                z-index: 100;
                background: rgba(255, 255, 255, 0.97);
                border-top: 1px solid var(--border-color);
                padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
                justify-content: space-around;
                box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
                backdrop-filter: blur(8px);
            }

            .mobile-tab {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 3px;
                padding: 5px 8px;
                font-size: 10px;
                color: var(--text-muted);
                min-width: 56px;
                border-radius: 10px;
                transition: all .2s;
                font-weight: 500;
            }

            .mobile-tab i {
                font-size: 18px;
            }

            .mobile-tab.active {
                color: var(--primary);
                background: rgba(26, 65, 216, 0.06);
                font-weight: 600;
            }

            .page-hero {
                padding: 56px 0 48px;
            }

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

            .section-block {
                padding: 56px 0;
            }

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

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

            .feature-images {
                padding-bottom: 10px;
            }

            .feature-img-float {
                right: -8px;
                bottom: -12px;
            }

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

            .footer-bottom {
                padding-bottom: 70px;
            }

            body {
                padding-bottom: 56px;
            }
        }

        @media (max-width: 520px) {
            .container-site {
                padding: 0 18px;
            }

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

            .process-wrap {
                grid-template-columns: 1fr;
            }

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

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

            .stats-card {
                padding: 20px 14px;
            }

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

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

            .btn-primary,
            .btn-outline {
                justify-content: center;
                width: 100%;
            }

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

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

            .logo-text {
                font-size: 15px;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 12px;
            }

            .cta-section {
                padding: 48px 0;
                border-radius: var(--radius-lg);
            }

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

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

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

            .faq-item.active .faq-answer {
                padding-bottom: 16px;
            }
        }