/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #0a1628;
            --color-primary-light: #1a2d4a;
            --color-secondary: #f04e30;
            --color-secondary-hover: #d43a1e;
            --color-accent: #f7c948;
            --color-accent-hover: #e0b232;
            --color-bg: #f4f6f9;
            --color-bg-alt: #ffffff;
            --color-bg-dark: #0d1f3c;
            --color-text: #1a1a2e;
            --color-text-light: #6c757d;
            --color-text-inverse: #ffffff;
            --color-border: #e0e4ea;
            --color-success: #2ecc71;
            --color-shadow: rgba(10, 22, 40, 0.08);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px var(--color-shadow);
            --shadow-md: 0 6px 24px var(--color-shadow);
            --shadow-lg: 0 12px 48px rgba(10, 22, 40, 0.12);
            --transition: all 0.25s ease;
            --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --tab-height: 64px;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
        }
        a { color: var(--color-secondary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--color-secondary-hover); text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--color-primary); }
        p { margin-bottom: 1rem; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .section-padding { padding: 80px 0; }
        .section-padding-sm { padding: 48px 0; }

        /* ===== 通用组件 ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 32px; border-radius: var(--radius-md);
            font-weight: 600; font-size: 1rem; line-height: 1.4;
            border: none; cursor: pointer; transition: var(--transition);
            text-decoration: none; white-space: nowrap;
        }
        .btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); text-decoration: none; }
        .btn:active { transform: translateY(0); }
        .btn-primary { background: var(--color-secondary); color: #fff; }
        .btn-primary:hover { background: var(--color-secondary-hover); color: #fff; }
        .btn-accent { background: var(--color-accent); color: var(--color-primary); }
        .btn-accent:hover { background: var(--color-accent-hover); color: var(--color-primary); }
        .btn-outline { background: transparent; border: 2px solid var(--color-secondary); color: var(--color-secondary); }
        .btn-outline:hover { background: var(--color-secondary); color: #fff; }
        .btn-lg { padding: 16px 44px; font-size: 1.1rem; border-radius: var(--radius-lg); }
        .btn-sm { padding: 8px 20px; font-size: 0.875rem; border-radius: var(--radius-sm); }

        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 100px;
            font-size: 0.8rem; font-weight: 600; background: var(--color-accent);
            color: var(--color-primary); letter-spacing: 0.3px;
        }
        .badge-secondary { background: var(--color-secondary); color: #fff; }
        .badge-outline { background: transparent; border: 1px solid var(--color-border); color: var(--color-text-light); }

        .tag {
            display: inline-block; padding: 4px 12px; border-radius: var(--radius-sm);
            font-size: 0.8rem; background: var(--color-bg); color: var(--color-text-light);
            border: 1px solid var(--color-border); transition: var(--transition);
        }
        .tag:hover { border-color: var(--color-secondary); color: var(--color-secondary); }

        .section-title {
            font-size: 2.2rem; font-weight: 800; color: var(--color-primary);
            margin-bottom: 0.5rem; letter-spacing: -0.5px;
        }
        .section-subtitle {
            font-size: 1.1rem; color: var(--color-text-light);
            max-width: 640px; margin: 0 auto 2.5rem auto;
        }
        .section-header { text-align: center; margin-bottom: 3.5rem; }

        .card {
            background: var(--color-bg-alt); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); overflow: hidden;
            transition: var(--transition); border: 1px solid var(--color-border);
        }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .card-img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
        .card-body { padding: 20px 24px 24px; }
        .card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; color: var(--color-primary); }
        .card-text { font-size: 0.95rem; color: var(--color-text-light); line-height: 1.6; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
            background: rgba(10, 22, 40, 0.95); backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            height: var(--header-height); transition: var(--transition);
        }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
        }
        .site-logo {
            font-size: 1.4rem; font-weight: 800; color: #fff;
            letter-spacing: 1px; display: flex; align-items: center; gap: 10px;
            text-decoration: none;
        }
        .site-logo:hover { color: var(--color-accent); text-decoration: none; }
        .site-logo i { color: var(--color-secondary); font-size: 1.6rem; }
        .nav-links { display: flex; align-items: center; gap: 8px; }
        .nav-links a {
            padding: 8px 20px; border-radius: var(--radius-md);
            color: rgba(255,255,255,0.75); font-weight: 500; font-size: 0.95rem;
            transition: var(--transition); text-decoration: none; position: relative;
        }
        .nav-links a:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav-links a.active { color: #fff; background: rgba(240,78,48,0.2); }
        .nav-links a.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; background: var(--color-secondary); border-radius: 3px;
        }
        .nav-cta { margin-left: 12px; }
        .nav-cta .btn { padding: 8px 24px; font-size: 0.9rem; }

        /* ===== 移动端底部 Tab ===== */
        .bottom-tab {
            display: none; position: fixed; bottom: 0; left: 0; width: 100%;
            height: var(--tab-height); background: var(--color-primary);
            border-top: 1px solid rgba(255,255,255,0.08);
            z-index: 999; justify-content: space-around; align-items: center;
            padding: 0 8px; box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
        }
        .tab-item {
            display: flex; flex-direction: column; align-items: center; justify-content: center;
            gap: 2px; padding: 6px 12px; border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.5); font-size: 0.7rem; font-weight: 500;
            transition: var(--transition); text-decoration: none; min-width: 60px;
        }
        .tab-item i { font-size: 1.3rem; transition: var(--transition); }
        .tab-item:hover, .tab-item.active { color: var(--color-accent); text-decoration: none; }
        .tab-item.active i { transform: scale(1.1); }

        /* ===== Hero ===== */
        .hero {
            position: relative; min-height: 92vh; display: flex; align-items: center;
            background: var(--color-primary); overflow: hidden;
            margin-top: var(--header-height);
        }
        .hero-bg {
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.3; transform: scale(1.05);
        }
        .hero-overlay {
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(10,22,40,0.92) 0%, rgba(10,22,40,0.7) 50%, rgba(240,78,48,0.25) 100%);
        }
        .hero-content { position: relative; z-index: 2; width: 100%; padding: 60px 0; }
        .hero-badge { margin-bottom: 20px; }
        .hero-title {
            font-size: 3.4rem; font-weight: 900; color: #fff;
            line-height: 1.15; letter-spacing: -1px; max-width: 800px;
            margin-bottom: 1.2rem;
        }
        .hero-title span { color: var(--color-secondary); }
        .hero-desc {
            font-size: 1.2rem; color: rgba(255,255,255,0.75);
            max-width: 620px; line-height: 1.8; margin-bottom: 2.2rem;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-stats {
            display: flex; gap: 40px; margin-top: 3.5rem;
            padding-top: 2.5rem; border-top: 1px solid rgba(255,255,255,0.1);
        }
        .hero-stat h3 { font-size: 2rem; font-weight: 800; color: var(--color-accent); margin-bottom: 2px; }
        .hero-stat p { font-size: 0.9rem; color: rgba(255,255,255,0.5); margin: 0; }

        /* ===== 板块通用 ===== */
        .section-alt { background: var(--color-bg-alt); }

        /* ===== 核心优势 ===== */
        .advantage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .advantage-card {
            background: var(--color-bg-alt); border-radius: var(--radius-md);
            padding: 36px 28px; border: 1px solid var(--color-border);
            transition: var(--transition); text-align: center;
        }
        .advantage-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--color-secondary); }
        .advantage-icon {
            width: 64px; height: 64px; border-radius: 50%;
            background: linear-gradient(135deg, var(--color-secondary), #ff7a50);
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 18px; font-size: 1.6rem; color: #fff;
        }
        .advantage-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
        .advantage-card p { color: var(--color-text-light); font-size: 0.95rem; margin: 0; }

        /* ===== 热门赛事 ===== */
        .event-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .event-card .card-img { aspect-ratio: 4 / 3; }
        .event-card .card-body { padding: 18px 20px 20px; }
        .event-meta { display: flex; align-items: center; gap: 12px; font-size: 0.85rem; color: var(--color-text-light); margin-top: 8px; }
        .event-meta i { color: var(--color-secondary); }

        /* ===== 最新资讯 (CMS) ===== */
        .news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .news-card { display: flex; gap: 20px; background: var(--color-bg-alt); border-radius: var(--radius-md); padding: 20px; border: 1px solid var(--color-border); transition: var(--transition); }
        .news-card:hover { box-shadow: var(--shadow-sm); border-color: var(--color-secondary); }
        .news-thumb { width: 140px; min-height: 100px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; }
        .news-info { flex: 1; display: flex; flex-direction: column; justify-content: center; }
        .news-info .badge { align-self: flex-start; margin-bottom: 8px; }
        .news-info h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; line-height: 1.4; }
        .news-info h4 a { color: var(--color-primary); text-decoration: none; }
        .news-info h4 a:hover { color: var(--color-secondary); }
        .news-info p { font-size: 0.9rem; color: var(--color-text-light); margin: 0 0 8px 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-time { font-size: 0.8rem; color: var(--color-text-light); display: flex; align-items: center; gap: 6px; }
        .news-time i { color: var(--color-secondary); }

        .empty-news {
            grid-column: 1 / -1; text-align: center; padding: 60px 20px;
            color: var(--color-text-light); font-size: 1.05rem;
            background: var(--color-bg-alt); border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }
        .empty-news i { font-size: 2.4rem; color: var(--color-border); margin-bottom: 16px; display: block; }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--color-primary); position: relative; overflow: hidden;
        }
        .stats-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
        }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative; z-index: 1; text-align: center; }
        .stat-item h2 { font-size: 2.8rem; font-weight: 900; color: var(--color-accent); margin-bottom: 4px; }
        .stat-item p { font-size: 1rem; color: rgba(255,255,255,0.6); margin: 0; }

        /* ===== 平台特色 ===== */
        .feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
        .feature-row.reverse { direction: rtl; }
        .feature-row.reverse > * { direction: ltr; }
        .feature-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
        .feature-img img { width: 100%; height: 400px; object-fit: cover; }
        .feature-content h3 { font-size: 1.8rem; margin-bottom: 16px; }
        .feature-content p { color: var(--color-text-light); font-size: 1rem; line-height: 1.8; }
        .feature-list { margin-top: 20px; }
        .feature-list li { display: flex; align-items: center; gap: 12px; padding: 8px 0; font-size: 0.95rem; color: var(--color-text); }
        .feature-list li i { color: var(--color-success); font-size: 1.1rem; }

        /* ===== FAQ ===== */
        .faq-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--color-bg-alt); border-radius: var(--radius-md);
            border: 1px solid var(--color-border); overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--color-secondary); }
        .faq-question {
            padding: 18px 24px; display: flex; align-items: center; justify-content: space-between;
            font-weight: 600; font-size: 1rem; cursor: pointer; color: var(--color-primary);
            background: none; border: none; width: 100%; text-align: left;
            transition: var(--transition); gap: 16px;
        }
        .faq-question i { color: var(--color-secondary); transition: var(--transition); font-size: 0.9rem; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px; font-size: 0.95rem; color: var(--color-text-light);
            line-height: 1.7; display: none;
        }
        .faq-answer.open { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-primary); position: relative; overflow: hidden;
            text-align: center;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-content { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }
        .cta-content h2 { font-size: 2.4rem; color: #fff; margin-bottom: 16px; }
        .cta-content p { font-size: 1.1rem; color: rgba(255,255,255,0.7); margin-bottom: 32px; }
        .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary); border-top: 1px solid rgba(255,255,255,0.06);
            padding: 48px 0 24px; color: rgba(255,255,255,0.6);
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 36px; }
        .footer-brand .site-logo { margin-bottom: 14px; font-size: 1.2rem; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
        .footer-col a { display: block; color: rgba(255,255,255,0.5); font-size: 0.9rem; padding: 4px 0; transition: var(--transition); text-decoration: none; }
        .footer-col a:hover { color: var(--color-accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 20px; display: flex; justify-content: space-between;
            align-items: center; flex-wrap: wrap; gap: 12px;
            font-size: 0.85rem;
        }
        .footer-bottom a { color: rgba(255,255,255,0.4); margin-left: 16px; text-decoration: none; }
        .footer-bottom a:hover { color: var(--color-accent); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-title { font-size: 2.8rem; }
            .advantage-grid { grid-template-columns: repeat(2, 1fr); }
            .event-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .site-header { height: 60px; }
            .nav-links { display: none; }
            .bottom-tab { display: flex; }
            body { padding-bottom: var(--tab-height); }
            .hero { min-height: 80vh; margin-top: 60px; }
            .hero-title { font-size: 2rem; }
            .hero-desc { font-size: 1rem; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat h3 { font-size: 1.6rem; }
            .section-padding { padding: 56px 0; }
            .section-title { font-size: 1.8rem; }
            .advantage-grid { grid-template-columns: 1fr; gap: 20px; }
            .event-grid { grid-template-columns: 1fr; gap: 20px; }
            .news-grid { grid-template-columns: 1fr; gap: 16px; }
            .news-card { flex-direction: column; }
            .news-thumb { width: 100%; height: 180px; }
            .feature-row { grid-template-columns: 1fr; gap: 28px; }
            .feature-row.reverse { direction: ltr; }
            .feature-img img { height: 240px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .stat-item h2 { font-size: 2rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .footer-bottom a { margin: 0 8px; }
            .container { padding: 0 16px; }
            .header-inner { padding: 0 16px; }
            .cta-content h2 { font-size: 1.8rem; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .section-header { margin-bottom: 2rem; }
            .section-subtitle { font-size: 1rem; }
            .faq-question { font-size: 0.95rem; padding: 14px 18px; }
            .faq-answer { padding: 0 18px 14px; }
        }

        @media (max-width: 520px) {
            .hero-title { font-size: 1.6rem; }
            .hero-desc { font-size: 0.9rem; }
            .hero-stat h3 { font-size: 1.3rem; }
            .section-title { font-size: 1.5rem; }
            .btn-lg { padding: 12px 28px; font-size: 1rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .stat-item h2 { font-size: 1.6rem; }
            .advantage-card { padding: 24px 20px; }
            .event-card .card-body { padding: 14px 16px 18px; }
            .tab-item { font-size: 0.65rem; min-width: 48px; }
            .tab-item i { font-size: 1.1rem; }
            .site-logo { font-size: 1.1rem; }
            .site-logo i { font-size: 1.3rem; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mt-3 { margin-top: 3rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .gap-1 { gap: 1rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== 加载动画 ===== */
        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-up { animation: fadeUp 0.6s ease forwards; }
        .fade-up-1 { animation-delay: 0.1s; }
        .fade-up-2 { animation-delay: 0.2s; }
        .fade-up-3 { animation-delay: 0.3s; }

        /* Foundation 覆盖 */
        .grid-container { max-width: var(--max-width); padding-left: 24px; padding-right: 24px; }
        @media (max-width: 768px) {
            .grid-container { padding-left: 16px; padding-right: 16px; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f1faee;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #ffb703;
            --bg-light: #f8f9fa;
            --bg-dark: #0d1b2a;
            --text-dark: #1a1a2e;
            --text-main: #2d3436;
            --text-muted: #636e72;
            --text-light: #dfe6e9;
            --border-color: #e0e0e0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background: #ffffff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        .button {
            transition: all var(--transition);
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            line-height: 1.3;
            font-weight: 700;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media screen and (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Section Spacing ===== */
        .section-padding {
            padding: 80px 0;
        }
        @media screen and (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-title p {
            font-size: 1.125rem;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto;
        }
        @media screen and (max-width: 768px) {
            .section-title h2 {
                font-size: 1.625rem;
            }
            .section-title p {
                font-size: 1rem;
            }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
            height: var(--header-height);
            transition: box-shadow 0.3s;
        }
        .site-header.scrolled {
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.5px;
        }
        .site-logo i {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .site-logo:hover {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: all var(--transition);
        }
        .nav-links a:hover,
        .nav-links a:focus {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .nav-links a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }
        .nav-links .nav-cta {
            border-bottom: none !important;
            padding: 0;
        }
        .nav-links .nav-cta .btn-primary {
            padding: 8px 22px;
            font-size: 0.9rem;
            border-radius: 50px;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px;
        }
        @media screen and (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 24px 20px;
                gap: 16px;
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                font-size: 1.05rem;
                padding: 10px 0;
                width: 100%;
                text-align: center;
                border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            }
            .nav-links a:last-of-type {
                border-bottom: none;
            }
            .nav-links .nav-cta {
                margin-top: 8px;
            }
            .mobile-toggle {
                display: block;
            }
        }
        @media screen and (max-width: 520px) {
            .header-inner {
                padding: 0 12px;
            }
            .site-logo {
                font-size: 1.2rem;
            }
        }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            border-top: 1px solid rgba(0, 0, 0, 0.06);
            padding: 6px 0 env(safe-area-inset-bottom, 6px) 0;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
        }
        .mobile-bottom-tab .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 500px;
            margin: 0 auto;
        }
        .mobile-bottom-tab .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            font-size: 0.7rem;
            color: var(--text-muted);
            transition: color var(--transition);
            border: none;
            background: none;
            cursor: pointer;
        }
        .mobile-bottom-tab .tab-item i {
            font-size: 1.2rem;
        }
        .mobile-bottom-tab .tab-item.active,
        .mobile-bottom-tab .tab-item:hover {
            color: var(--primary);
        }
        .mobile-bottom-tab .tab-item span {
            font-weight: 500;
        }
        @media screen and (max-width: 768px) {
            .mobile-bottom-tab {
                display: block;
            }
            body {
                padding-bottom: 64px;
            }
        }
        @media screen and (max-width: 520px) {
            .mobile-bottom-tab .tab-item {
                padding: 4px 8px;
                font-size: 0.65rem;
            }
            .mobile-bottom-tab .tab-item i {
                font-size: 1.1rem;
            }
        }

        /* ===== Hero Section ===== */
        .hero-section {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #16213e 100%);
            overflow: hidden;
        }
        .hero-section .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.3;
            z-index: 0;
        }
        .hero-section .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(230, 57, 70, 0.25) 0%, transparent 70%);
            z-index: 1;
        }
        .hero-section .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 60px 24px;
        }
        .hero-section .hero-badge {
            display: inline-block;
            background: rgba(230, 57, 70, 0.2);
            color: var(--primary);
            padding: 6px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            border: 1px solid rgba(230, 57, 70, 0.3);
            backdrop-filter: blur(4px);
        }
        .hero-section h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: -1px;
            line-height: 1.2;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .hero-section h1 span {
            color: var(--primary);
            display: inline-block;
        }
        .hero-section .hero-sub {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .hero-section .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .hero-section .btn-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 14px 40px;
            font-size: 1.05rem;
            font-weight: 700;
            border-radius: 50px;
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.35);
            transition: all var(--transition);
            cursor: pointer;
        }
        .hero-section .btn-primary:hover,
        .hero-section .btn-primary:focus {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(230, 57, 70, 0.45);
        }
        .hero-section .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
            padding: 14px 40px;
            font-size: 1.05rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all var(--transition);
            cursor: pointer;
        }
        .hero-section .btn-outline-light:hover,
        .hero-section .btn-outline-light:focus {
            background: rgba(255, 255, 255, 0.12);
            border-color: #ffffff;
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            justify-content: center;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .hero-stats .stat-item {
            text-align: center;
            color: rgba(255, 255, 255, 0.9);
        }
        .hero-stats .stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: #ffffff;
            display: block;
            line-height: 1.2;
        }
        .hero-stats .stat-item .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 2px;
        }
        @media screen and (max-width: 768px) {
            .hero-section {
                min-height: 440px;
            }
            .hero-section h1 {
                font-size: 2rem;
            }
            .hero-section .hero-sub {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stats .stat-item .num {
                font-size: 1.5rem;
            }
        }
        @media screen and (max-width: 520px) {
            .hero-section h1 {
                font-size: 1.6rem;
            }
            .hero-section .hero-actions .btn-primary,
            .hero-section .hero-actions .btn-outline-light {
                padding: 12px 28px;
                font-size: 0.95rem;
                width: 100%;
                max-width: 280px;
            }
            .hero-stats .stat-item .num {
                font-size: 1.25rem;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-block;
            padding: 12px 32px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
        }
        .btn-primary {
            background: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.4);
            color: #fff;
        }
        .btn-secondary {
            background: var(--secondary);
            color: #ffffff;
            box-shadow: 0 4px 16px rgba(29, 53, 87, 0.3);
        }
        .btn-secondary:hover,
        .btn-secondary:focus {
            background: #15263b;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(29, 53, 87, 0.4);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 44px;
            font-size: 1.1rem;
        }

        /* ===== Card ===== */
        .card {
            background: #ffffff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(0, 0, 0, 0.04);
            overflow: hidden;
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 24px;
        }
        .card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            font-weight: 700;
        }
        .card-body p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .card-body .card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.3px;
        }
        .badge-hot {
            background: var(--primary);
        }
        .badge-new {
            background: #00b894;
        }
        .tag {
            display: inline-block;
            background: var(--bg-light);
            color: var(--text-muted);
            font-size: 0.8rem;
            padding: 4px 14px;
            border-radius: 50px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== Feature / Advantage ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .feature-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(0, 0, 0, 0.04);
            transition: all var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .feature-card .icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 16px;
            display: inline-block;
            width: 72px;
            height: 72px;
            line-height: 72px;
            border-radius: 50%;
            background: rgba(230, 57, 70, 0.08);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            font-weight: 700;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        @media screen and (max-width: 768px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .feature-card {
                padding: 28px 20px;
            }
        }
        @media screen and (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .feature-card .icon {
                font-size: 2rem;
                width: 60px;
                height: 60px;
                line-height: 60px;
            }
        }

        /* ===== Content / Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        @media screen and (max-width: 768px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media screen and (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== Steps / Flow ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            padding: 32px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(0, 0, 0, 0.04);
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .step-card .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .step-card h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            font-weight: 700;
        }
        .step-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.5;
        }
        .step-card .step-arrow {
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--border-color);
            font-size: 1.6rem;
        }
        .steps-grid .step-card:last-child .step-arrow {
            display: none;
        }
        @media screen and (max-width: 768px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .step-card .step-arrow {
                display: none;
            }
        }
        @media screen and (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== Scenarios ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .scenario-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(0, 0, 0, 0.04);
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: all var(--transition);
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .scenario-card .sc-icon {
            font-size: 2rem;
            color: var(--primary);
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            line-height: 56px;
            text-align: center;
            border-radius: 50%;
            background: rgba(230, 57, 70, 0.08);
        }
        .scenario-card .sc-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .scenario-card .sc-content p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
        }
        @media screen and (max-width: 768px) {
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .scenario-card {
                padding: 24px 20px;
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== Stats / Numbers ===== */
        .stats-block {
            background: var(--bg-dark);
            padding: 60px 0;
            color: #fff;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }
        .stats-grid .stat-item .num {
            font-size: 2.8rem;
            font-weight: 900;
            color: #ffffff;
            display: block;
            line-height: 1.2;
        }
        .stats-grid .stat-item .num span {
            color: var(--primary);
        }
        .stats-grid .stat-item .label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 6px;
        }
        @media screen and (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .stats-grid .stat-item .num {
                font-size: 2rem;
            }
        }
        @media screen and (max-width: 520px) {
            .stats-grid .stat-item .num {
                font-size: 1.6rem;
            }
            .stats-grid .stat-item .label {
                font-size: 0.85rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(0, 0, 0, 0.04);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
            font-family: var(--font-sans);
        }
        .faq-question:hover {
            background: rgba(0, 0, 0, 0.02);
        }
        .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
            font-size: 1.1rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        @media screen and (max-width: 520px) {
            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.9rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a4a 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.6;
        }
        .cta-section .btn-primary {
            background: var(--primary);
            color: #fff;
            padding: 16px 48px;
            font-size: 1.1rem;
            font-weight: 700;
            border-radius: 50px;
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.35);
        }
        .cta-section .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(230, 57, 70, 0.45);
        }
        @media screen and (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 1.75rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
            .cta-section .btn-primary {
                padding: 14px 36px;
                font-size: 1rem;
            }
        }
        @media screen and (max-width: 520px) {
            .cta-section h2 {
                font-size: 1.4rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .site-footer .footer-brand .site-logo {
            color: #fff;
            font-size: 1.4rem;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .site-footer .footer-brand .site-logo i {
            color: var(--primary);
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 340px;
        }
        .site-footer .footer-col h4 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .site-footer .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: color var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: var(--primary);
        }
        .site-footer .footer-col a i {
            margin-right: 6px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            margin-left: 20px;
            transition: color var(--transition);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--primary);
        }
        @media screen and (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer .footer-bottom a {
                margin: 0 10px;
            }
        }
        @media screen and (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
        }

        /* ===== Misc Utilities ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mt-4 {
            margin-top: 32px;
        }
        .mb-1 {
            margin-bottom: 8px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .mb-4 {
            margin-bottom: 32px;
        }
        .bg-light {
            background: var(--bg-light);
        }
        .bg-dark-section {
            background: var(--bg-dark);
            color: #fff;
        }
        .bg-dark-section .section-title h2 {
            color: #fff;
        }
        .bg-dark-section .section-title p {
            color: rgba(255, 255, 255, 0.65);
        }

        /* ===== Foundation Overrides ===== */
        .grid-container {
            max-width: var(--container-max) !important;
        }
        .cell {
            padding: 0 !important;
        }
        .grid-x {
            margin: 0 !important;
        }

        /* ===== Responsive Fine-tune ===== */
        @media screen and (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media screen and (max-width: 520px) {
            .hero-section .hero-badge {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
            .section-title h2 {
                font-size: 1.4rem;
            }
            .btn-lg {
                padding: 14px 32px;
                font-size: 1rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #1a237e;
            --primary-light: #283593;
            --primary-dark: #0d1442;
            --secondary: #2979ff;
            --secondary-light: #539bff;
            --accent: #ff6f00;
            --accent-light: #ffa040;
            --bg: #f5f7fa;
            --bg-white: #ffffff;
            --bg-dark: #0d1442;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-white: #f9fafb;
            --border: #e5e7eb;
            --border-light: #f0f2f5;
            --radius: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-lg: 0 4px 20px rgba(0,0,0,0.10);
            --shadow-xl: 0 8px 32px rgba(0,0,0,0.14);
            --transition: 0.25s ease;
            --font: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
            --max-width: 1200px;
            --header-h: 68px;
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
        html{scroll-behavior:smooth;font-size:16px;}
        body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;min-height:100vh;padding-top:var(--header-h);}
        a{color:var(--secondary);text-decoration:none;transition:color var(--transition);}
        a:hover{color:var(--primary);}
        a:focus-visible{outline:2px solid var(--secondary);outline-offset:2px;border-radius:2px;}
        img{max-width:100%;height:auto;display:block;border-radius:var(--radius);}
        ul,ol{list-style:none;padding:0;margin:0;}
        h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--text);}
        h1{font-size:2.2rem;}
        h2{font-size:1.8rem;}
        h3{font-size:1.35rem;}
        h4{font-size:1.15rem;}
        p{margin-bottom:1rem;}
        .container{max-width:var(--max-width);margin:0 auto;padding:0 20px;}
        .grid-container{padding-left:20px;padding-right:20px;max-width:var(--max-width);}
        .section{padding:60px 0;}
        .section-title{text-align:center;margin-bottom:40px;}
        .section-title h2{font-size:1.9rem;color:var(--primary);margin-bottom:12px;}
        .section-title p{font-size:1.05rem;color:var(--text-light);max-width:680px;margin:0 auto;}
        .text-center{text-align:center;}
        .text-muted{color:var(--text-light);}
        .mt-1{margin-top:10px;}
        .mt-2{margin-top:20px;}
        .mt-3{margin-top:30px;}
        .mb-2{margin-bottom:20px;}
        .mb-3{margin-bottom:30px;}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 28px;font-size:0.95rem;font-weight:600;border-radius:var(--radius);border:none;cursor:pointer;transition:all var(--transition);font-family:var(--font);line-height:1.4;}
        .btn-primary{background:var(--primary);color:#fff;}
        .btn-primary:hover{background:var(--primary-light);transform:translateY(-2px);box-shadow:var(--shadow-lg);color:#fff;}
        .btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow);}
        .btn-secondary{background:var(--secondary);color:#fff;}
        .btn-secondary:hover{background:var(--secondary-light);transform:translateY(-2px);box-shadow:var(--shadow-lg);color:#fff;}
        .btn-accent{background:var(--accent);color:#fff;}
        .btn-accent:hover{background:var(--accent-light);transform:translateY(-2px);box-shadow:var(--shadow-lg);color:#fff;}
        .btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary);}
        .btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px);}
        .btn-sm{padding:6px 18px;font-size:0.85rem;}
        .btn-lg{padding:14px 38px;font-size:1.1rem;}
        .badge{display:inline-block;padding:4px 14px;font-size:0.75rem;font-weight:600;border-radius:20px;background:var(--secondary);color:#fff;}
        .badge-primary{background:var(--primary);color:#fff;}
        .badge-accent{background:var(--accent);color:#fff;}
        .badge-outline{background:transparent;border:1px solid var(--border);color:var(--text-light);}
        .tag{display:inline-block;padding:4px 14px;font-size:0.8rem;border-radius:20px;background:var(--bg);color:var(--text-light);border:1px solid var(--border);transition:all var(--transition);}
        .tag:hover{background:var(--secondary);color:#fff;border-color:var(--secondary);}
        .card{background:var(--bg-white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:all var(--transition);}
        .card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);}
        .card-img{width:100%;aspect-ratio:16/9;object-fit:cover;}
        .card-body{padding:20px 24px 24px;}
        .card-body h3{font-size:1.15rem;margin-bottom:8px;}
        .card-body p{font-size:0.9rem;color:var(--text-light);margin-bottom:12px;}
        .card-footer{padding:12px 24px;border-top:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between;font-size:0.85rem;color:var(--text-light);}
        .site-header{position:fixed;top:0;left:0;width:100%;height:var(--header-h);background:rgba(255,255,255,0.95);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border-light);z-index:1000;box-shadow:0 1px 4px rgba(0,0,0,0.04);}
        .header-inner{max-width:var(--max-width);margin:0 auto;padding:0 20px;height:100%;display:flex;align-items:center;justify-content:space-between;}
        .site-logo{display:flex;align-items:center;gap:8px;font-size:1.25rem;font-weight:800;color:var(--primary);white-space:nowrap;}
        .site-logo i{color:var(--accent);font-size:1.3rem;}
        .site-logo:hover{color:var(--primary-light);}
        .nav-links{display:flex;align-items:center;gap:24px;}
        .nav-links a{font-size:0.93rem;font-weight:500;color:var(--text);padding:6px 0;position:relative;transition:color var(--transition);}
        .nav-links a::after{content:'';position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--secondary);transition:width var(--transition);border-radius:2px;}
        .nav-links a:hover{color:var(--secondary);}
        .nav-links a:hover::after{width:100%;}
        .nav-links a.active{color:var(--primary);font-weight:600;}
        .nav-links a.active::after{width:100%;background:var(--primary);}
        .nav-links .nav-cta{margin-left:4px;}
        .nav-links .nav-cta .btn{padding:6px 20px;font-size:0.85rem;}
        .mobile-tab-bar{display:none;position:fixed;bottom:0;left:0;width:100%;height:62px;background:var(--bg-white);border-top:1px solid var(--border);z-index:999;box-shadow:0 -2px 8px rgba(0,0,0,0.06);justify-content:space-around;align-items:center;padding:0 8px;}
        .mobile-tab-bar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:8px 12px;border-radius:var(--radius);color:var(--text-light);font-size:0.7rem;font-weight:500;transition:all var(--transition);min-width:56px;}
        .mobile-tab-bar a i{font-size:1.2rem;}
        .mobile-tab-bar a.active{color:var(--primary);background:rgba(26,35,126,0.06);}
        .mobile-tab-bar a:hover{color:var(--primary);background:rgba(26,35,126,0.04);}
        .hero-article{position:relative;padding:80px 0 50px;background:var(--primary-dark);color:var(--text-white);overflow:hidden;}
        .hero-article-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:0.25;z-index:0;}
        .hero-article .container{position:relative;z-index:1;}
        .hero-article .article-breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:0.85rem;color:rgba(255,255,255,0.7);margin-bottom:20px;}
        .hero-article .article-breadcrumb a{color:rgba(255,255,255,0.8);}
        .hero-article .article-breadcrumb a:hover{color:#fff;}
        .hero-article .article-breadcrumb .sep{margin:0 4px;color:rgba(255,255,255,0.4);}
        .hero-article h1{font-size:2.4rem;font-weight:800;color:#fff;margin-bottom:16px;line-height:1.3;max-width:860px;}
        .hero-article .article-meta{display:flex;flex-wrap:wrap;gap:16px 28px;align-items:center;font-size:0.9rem;color:rgba(255,255,255,0.75);margin-bottom:10px;}
        .hero-article .article-meta i{margin-right:6px;color:var(--accent-light);}
        .hero-article .article-meta .badge{font-size:0.75rem;}
        .hero-article .article-cover{margin-top:30px;border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-xl);max-height:480px;}
        .hero-article .article-cover img{width:100%;height:100%;object-fit:cover;}
        .article-body-wrap{padding:40px 0 20px;}
        .article-body-inner{max-width:820px;margin:0 auto;}
        .article-content{background:var(--bg-white);border-radius:var(--radius-lg);padding:40px 48px;box-shadow:var(--shadow);line-height:1.9;font-size:1.05rem;color:var(--text);}
        .article-content h2{margin-top:40px;margin-bottom:16px;font-size:1.6rem;color:var(--primary);border-bottom:2px solid var(--border-light);padding-bottom:10px;}
        .article-content h3{margin-top:32px;margin-bottom:12px;font-size:1.25rem;color:var(--primary-light);}
        .article-content p{margin-bottom:1.2rem;}
        .article-content ul,.article-content ol{margin-bottom:1.2rem;padding-left:24px;list-style:disc;}
        .article-content li{margin-bottom:6px;}
        .article-content blockquote{border-left:4px solid var(--secondary);padding:12px 20px;margin:24px 0;background:var(--bg);border-radius:0 var(--radius) var(--radius) 0;color:var(--text-light);font-style:italic;}
        .article-content a{color:var(--secondary);font-weight:500;border-bottom:1px solid transparent;}
        .article-content a:hover{border-bottom-color:var(--secondary);}
        .article-content img{border-radius:var(--radius-lg);margin:24px 0;}
        .article-content .wp-caption-text,.article-content figcaption{text-align:center;font-size:0.85rem;color:var(--text-light);margin-top:-16px;margin-bottom:20px;}
        .article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:0.95rem;}
        .article-content th,.article-content td{padding:10px 16px;border:1px solid var(--border);text-align:left;}
        .article-content th{background:var(--bg);font-weight:600;color:var(--primary);}
        .article-content code{background:var(--bg);padding:2px 8px;border-radius:4px;font-size:0.9rem;color:var(--accent);}
        .article-content pre{background:var(--bg-dark);color:#e4e4e4;padding:20px 24px;border-radius:var(--radius-lg);overflow-x:auto;margin:24px 0;font-size:0.9rem;line-height:1.6;}
        .article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:32px;padding-top:20px;border-top:1px solid var(--border-light);}
        .article-share{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:16px;border-top:1px solid var(--border-light);}
        .article-share span{font-size:0.9rem;color:var(--text-light);font-weight:500;}
        .article-share a{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--bg);color:var(--text-light);transition:all var(--transition);font-size:1rem;}
        .article-share a:hover{background:var(--secondary);color:#fff;transform:translateY(-2px);}
        .article-nav{display:flex;justify-content:space-between;gap:20px;margin-top:32px;padding-top:20px;border-top:1px solid var(--border-light);}
        .article-nav a{flex:1;padding:16px 20px;background:var(--bg);border-radius:var(--radius);font-size:0.9rem;color:var(--text);transition:all var(--transition);display:flex;flex-direction:column;gap:4px;}
        .article-nav a:hover{background:var(--primary);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg);}
        .article-nav a .nav-label{font-size:0.75rem;color:var(--text-light);text-transform:uppercase;letter-spacing:0.5px;}
        .article-nav a:hover .nav-label{color:rgba(255,255,255,0.7);}
        .article-nav a .nav-title{font-weight:600;}
        .related-section{background:var(--bg);padding:60px 0;}
        .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
        .cta-section{background:linear-gradient(135deg,var(--primary-dark),var(--primary-light));padding:60px 0;text-align:center;color:#fff;}
        .cta-section h2{font-size:1.9rem;color:#fff;margin-bottom:12px;}
        .cta-section p{font-size:1.05rem;color:rgba(255,255,255,0.85);max-width:600px;margin:0 auto 28px;}
        .cta-section .btn-accent{font-size:1.05rem;padding:14px 40px;}
        .not-found-section{padding:100px 0;text-align:center;}
        .not-found-section h2{font-size:2rem;color:var(--primary);margin-bottom:16px;}
        .not-found-section p{font-size:1.1rem;color:var(--text-light);margin-bottom:24px;}
        .not-found-section .btn{margin-top:8px;}
        .site-footer{background:var(--primary-dark);color:rgba(255,255,255,0.85);padding:60px 0 0;}
        .site-footer .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:40px;}
        .site-footer .footer-brand .site-logo{color:#fff;font-size:1.3rem;margin-bottom:16px;}
        .site-footer .footer-brand .site-logo i{color:var(--accent);}
        .site-footer .footer-brand p{font-size:0.9rem;color:rgba(255,255,255,0.65);line-height:1.7;margin-top:12px;}
        .site-footer .footer-col h4{color:#fff;font-size:1rem;font-weight:600;margin-bottom:16px;position:relative;padding-bottom:8px;}
        .site-footer .footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:var(--accent);border-radius:2px;}
        .site-footer .footer-col a{display:block;color:rgba(255,255,255,0.65);font-size:0.88rem;padding:5px 0;transition:all var(--transition);}
        .site-footer .footer-col a:hover{color:var(--accent-light);padding-left:4px;}
        .site-footer .footer-col a i{margin-right:8px;width:16px;text-align:center;}
        .site-footer .footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding:20px 0;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;font-size:0.82rem;color:rgba(255,255,255,0.5);}
        .site-footer .footer-bottom a{color:rgba(255,255,255,0.6);margin-left:20px;transition:color var(--transition);}
        .site-footer .footer-bottom a:hover{color:var(--accent-light);}
        .site-footer .footer-bottom span{display:flex;align-items:center;flex-wrap:wrap;gap:8px;}
        @media(max-width:1024px){
            .related-grid{grid-template-columns:repeat(2,1fr);}
            .site-footer .footer-grid{grid-template-columns:1.2fr 1fr 1fr;}
            .site-footer .footer-grid .footer-col:last-child{grid-column:span 3;}
        }
        @media(max-width:768px){
            :root{--header-h:58px;}
            h1{font-size:1.7rem;}
            h2{font-size:1.4rem;}
            .section{padding:40px 0;}
            .hero-article{padding:60px 0 30px;}
            .hero-article h1{font-size:1.6rem;}
            .hero-article .article-meta{font-size:0.8rem;gap:10px 16px;}
            .article-content{padding:24px 20px;}
            .article-content h2{font-size:1.3rem;}
            .article-content h3{font-size:1.1rem;}
            .related-grid{grid-template-columns:1fr;}
            .nav-links{display:none;}
            .mobile-tab-bar{display:flex;}
            body{padding-bottom:62px;}
            .site-footer .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
            .site-footer .footer-grid .footer-col:last-child{grid-column:span 2;}
            .article-nav{flex-direction:column;}
            .cta-section h2{font-size:1.4rem;}
            .site-footer .footer-bottom{flex-direction:column;gap:12px;text-align:center;}
            .site-footer .footer-bottom span{justify-content:center;}
            .site-footer .footer-bottom a{margin:0 10px;}
        }
        @media(max-width:520px){
            .hero-article h1{font-size:1.35rem;}
            .article-content{padding:16px 14px;font-size:0.95rem;}
            .site-footer .footer-grid{grid-template-columns:1fr;}
            .site-footer .footer-grid .footer-col:last-child{grid-column:span 1;}
            .mobile-tab-bar a{font-size:0.65rem;padding:6px 8px;min-width:48px;}
            .mobile-tab-bar a i{font-size:1.1rem;}
            .section-title h2{font-size:1.3rem;}
        }