/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --clr-primary: #0d1b2a;
        --clr-primary-light: #1a2d5a;
        --clr-secondary: #f0b843;
        --clr-accent: #e74c3c;
        --clr-bg: #f5f7fa;
        --clr-bg-alt: #eef1f5;
        --clr-card: #ffffff;
        --clr-text: #1a1a2e;
        --clr-text-light: #6c757d;
        --clr-text-muted: #9ca3af;
        --clr-border: #e8ecef;
        --clr-border-light: #f0f2f5;
        --clr-success: #10b981;
        --clr-white: #ffffff;
        --clr-dark-overlay: rgba(13, 27, 42, 0.75);
        --radius-sm: 6px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.04);
        --shadow-md: 0 8px 24px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.03);
        --shadow-lg: 0 20px 48px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.04);
        --shadow-xl: 0 32px 64px rgba(0,0,0,0.12);
        --transition: 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
        --font-heading: var(--font-base);
        --max-width: 1200px;
        --nav-height: 72px;
        --tab-height: 64px;
        --spacer-section: 80px;
        --spacer-block: 52px;
        --grid-gap: 28px;
    }

    /* ===== Reset / Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
    body {
        font-family: var(--font-base);
        font-size: 16px;
        line-height: 1.6;
        color: var(--clr-text);
        background: var(--clr-bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    button { font-family: inherit; cursor: pointer; border: none; background: none; font-size: inherit; }
    input, textarea { font-family: inherit; font-size: inherit; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: 700; line-height: 1.25; color: var(--clr-text); }
    h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); letter-spacing: -0.02em; }
    h2 { font-size: clamp(1.6rem, 3.2vw, 2.6rem); letter-spacing: -0.015em; }
    h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
    h4 { font-size: 1.1rem; }
    p { margin-bottom: 0.75em; color: var(--clr-text-light); }
    .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
    .section { padding: var(--spacer-section) 0; }
    .section-title { text-align: center; margin-bottom: var(--spacer-block); }
    .section-title h2 { margin-bottom: 12px; }
    .section-title p { font-size: 1.1rem; max-width: 640px; margin: 0 auto; color: var(--clr-text-light); }
    .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

    /* ===== Button ===== */
    .btn {
        display: inline-flex; align-items: center; justify-content: center; gap: 8px;
        padding: 12px 28px; border-radius: var(--radius-md); font-weight: 600; font-size: 0.95rem;
        transition: var(--transition); border: 2px solid transparent; white-space: nowrap;
    }
    .btn-primary { background: var(--clr-secondary); color: var(--clr-primary); border-color: var(--clr-secondary); }
    .btn-primary:hover { background: #e0a830; border-color: #e0a830; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(240, 184, 67, 0.35); }
    .btn-primary:active { transform: translateY(0); }
    .btn-outline { background: transparent; color: var(--clr-white); border-color: var(--clr-white); }
    .btn-outline:hover { background: var(--clr-white); color: var(--clr-primary); transform: translateY(-2px); }
    .btn-accent { background: var(--clr-accent); color: var(--clr-white); border-color: var(--clr-accent); }
    .btn-accent:hover { background: #d63031; border-color: #d63031; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(231, 76, 60, 0.30); }
    .btn-lg { padding: 16px 40px; font-size: 1.05rem; border-radius: var(--radius-lg); }

    /* ===== Badge / Tag ===== */
    .badge {
        display: inline-block; padding: 4px 14px; border-radius: 50px; font-size: 0.78rem;
        font-weight: 600; letter-spacing: 0.3px; background: var(--clr-bg-alt); color: var(--clr-text-light);
    }
    .badge-primary { background: rgba(240, 184, 67, 0.15); color: #b8860b; }
    .badge-info { background: rgba(26, 45, 90, 0.10); color: var(--clr-primary-light); }
    .tag {
        display: inline-block; padding: 3px 12px; border-radius: var(--radius-sm); font-size: 0.75rem;
        font-weight: 500; background: var(--clr-bg-alt); color: var(--clr-text-light); border: 1px solid var(--clr-border);
    }

    /* ===== Card ===== */
    .card {
        background: var(--clr-card); border-radius: var(--radius-md); box-shadow: var(--shadow-sm);
        transition: var(--transition); overflow: hidden;
    }
    .card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .card-img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
    .card-body { padding: 20px 24px 24px; }
    .card-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; color: var(--clr-text); }
    .card-text { font-size: 0.92rem; color: var(--clr-text-light); line-height: 1.6; }
    .card-meta { display: flex; align-items: center; gap: 12px; margin-top: 12px; font-size: 0.82rem; color: var(--clr-text-muted); }

    /* ===== Header / Nav ===== */
    .site-header {
        position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
        background: rgba(13, 27, 42, 0.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(255,255,255,0.06); height: var(--nav-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;
    }
    .logo {
        font-size: 1.45rem; font-weight: 800; color: var(--clr-white); letter-spacing: -0.3px;
        display: flex; align-items: center; gap: 10px;
    }
    .logo-icon { width: 32px; height: 32px; background: var(--clr-secondary); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--clr-primary); font-weight: 900; font-size: 1.1rem; }
    .logo span { color: var(--clr-secondary); }

    .nav-desktop { display: flex; align-items: center; gap: 8px; }
    .nav-desktop a {
        padding: 8px 18px; border-radius: var(--radius-sm); font-size: 0.92rem; font-weight: 500;
        color: rgba(255,255,255,0.75); transition: var(--transition);
    }
    .nav-desktop a:hover { color: var(--clr-white); background: rgba(255,255,255,0.08); }
    .nav-desktop a.active { color: var(--clr-secondary); background: rgba(240, 184, 67, 0.12); }
    .nav-cta { margin-left: 12px; }
    .nav-cta .btn { padding: 8px 22px; font-size: 0.88rem; }

    /* Mobile menu toggle */
    .menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
    .menu-toggle span { display: block; width: 26px; height: 2.5px; background: var(--clr-white); border-radius: 4px; transition: var(--transition); }
    .menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .menu-toggle.active span:nth-child(2) { opacity: 0; }
    .menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

    /* Mobile bottom tabs */
    .bottom-tabs {
        display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 1001;
        height: var(--tab-height); background: var(--clr-primary); border-top: 1px solid rgba(255,255,255,0.06);
        box-shadow: 0 -4px 20px rgba(0,0,0,0.20);
    }
    .bottom-tabs-inner { display: flex; align-items: center; justify-content: space-around; height: 100%; padding: 0 8px; }
    .tab-item {
        display: flex; flex-direction: column; align-items: center; gap: 3px;
        padding: 6px 16px; border-radius: var(--radius-sm); color: rgba(255,255,255,0.55);
        font-size: 0.68rem; font-weight: 500; transition: var(--transition); min-width: 56px;
    }
    .tab-item i { font-size: 1.25rem; }
    .tab-item.active { color: var(--clr-secondary); }
    .tab-item:hover { color: var(--clr-white); background: rgba(255,255,255,0.06); }

    /* ===== Hero ===== */
    .hero {
        min-height: 92vh; display: flex; align-items: center; position: relative;
        background: linear-gradient(145deg, #0d1b2a 0%, #1a2d5a 60%, #0d1b2a 100%);
        padding-top: var(--nav-height); overflow: hidden;
    }
    .hero::before {
        content: ''; position: absolute; inset: 0;
        background: radial-gradient(ellipse at 20% 50%, rgba(240, 184, 67, 0.08) 0%, transparent 70%),
                    radial-gradient(ellipse at 80% 50%, rgba(231, 76, 60, 0.06) 0%, transparent 60%);
        pointer-events: none;
    }
    .hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; position: relative; z-index: 1; width: 100%; }
    .hero-content { padding: 40px 0; }
    .hero-badge { display: inline-block; padding: 6px 20px; border-radius: 50px; font-size: 0.82rem; font-weight: 600; background: rgba(240, 184, 67, 0.15); color: var(--clr-secondary); margin-bottom: 20px; border: 1px solid rgba(240, 184, 67, 0.20); }
    .hero h1 { color: var(--clr-white); margin-bottom: 16px; }
    .hero h1 span { color: var(--clr-secondary); }
    .hero p { font-size: 1.15rem; color: rgba(255,255,255,0.65); max-width: 520px; margin-bottom: 32px; line-height: 1.7; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
    .hero-visual {
        display: flex; align-items: center; justify-content: center; position: relative;
    }
    .hero-card-deco {
        background: rgba(255,255,255,0.04); border-radius: var(--radius-lg);
        border: 1px solid rgba(255,255,255,0.06); padding: 28px; width: 100%; max-width: 480px;
        backdrop-filter: blur(8px); box-shadow: var(--shadow-xl);
    }
    .hero-card-deco .stat-row { display: flex; gap: 24px; margin-bottom: 20px; }
    .hero-card-deco .stat-item { flex: 1; text-align: center; }
    .hero-card-deco .stat-num { font-size: 2rem; font-weight: 800; color: var(--clr-secondary); }
    .hero-card-deco .stat-label { font-size: 0.82rem; color: rgba(255,255,255,0.5); margin-top: 4px; }
    .hero-card-deco .match-list { display: flex; flex-direction: column; gap: 10px; }
    .hero-card-deco .match-item { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; background: rgba(255,255,255,0.04); border-radius: var(--radius-sm); }
    .hero-card-deco .match-item span { font-size: 0.85rem; color: rgba(255,255,255,0.7); }
    .hero-card-deco .match-item .vs { color: var(--clr-secondary); font-weight: 700; }

    /* ===== About ===== */
    .about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: var(--grid-gap); }
    .about-card { background: var(--clr-card); border-radius: var(--radius-md); padding: 32px 28px; box-shadow: var(--shadow-sm); border: 1px solid var(--clr-border-light); transition: var(--transition); text-align: center; }
    .about-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .about-card .icon-wrap { width: 56px; height: 56px; border-radius: var(--radius-md); background: rgba(240, 184, 67, 0.10); display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 1.5rem; color: var(--clr-secondary); }
    .about-card h3 { margin-bottom: 8px; }
    .about-card p { font-size: 0.92rem; color: var(--clr-text-light); }

    /* ===== Category / Guide ===== */
    .category-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--grid-gap); }
    .category-card {
        background: var(--clr-card); border-radius: var(--radius-md); box-shadow: var(--shadow-sm);
        padding: 28px 24px; border: 1px solid var(--clr-border-light); transition: var(--transition);
        display: flex; align-items: center; gap: 20px;
    }
    .category-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .category-card .cat-icon { width: 52px; height: 52px; border-radius: var(--radius-sm); background: var(--clr-bg-alt); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; color: var(--clr-primary-light); flex-shrink: 0; }
    .category-card .cat-info h4 { font-size: 1.05rem; margin-bottom: 4px; }
    .category-card .cat-info p { font-size: 0.85rem; color: var(--clr-text-muted); margin: 0; }
    .category-card .cat-arrow { margin-left: auto; color: var(--clr-text-muted); font-size: 1.1rem; }

    /* ===== Latest News (CMS) ===== */
    .news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: var(--grid-gap); }
    .news-card { background: var(--clr-card); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); overflow: hidden; transition: var(--transition); }
    .news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .news-card .card-img-wrap { width: 100%; aspect-ratio: 16 / 10; background: var(--clr-bg-alt); display: flex; align-items: center; justify-content: center; color: var(--clr-text-muted); font-size: 2rem; overflow: hidden; }
    .news-card .card-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
    .news-card .card-body { padding: 18px 22px 22px; }
    .news-card .card-body .badge { margin-bottom: 8px; }
    .news-card .card-body h3 { font-size: 1.05rem; margin-bottom: 6px; }
    .news-card .card-body h3 a { color: inherit; }
    .news-card .card-body h3 a:hover { color: var(--clr-secondary); }
    .news-card .card-body p { font-size: 0.88rem; color: var(--clr-text-light); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .news-card .card-meta { display: flex; align-items: center; gap: 14px; margin-top: 12px; font-size: 0.8rem; color: var(--clr-text-muted); }
    .empty-news { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--clr-text-muted); font-size: 1rem; background: var(--clr-card); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }

    /* ===== Stats ===== */
    .stats-section { background: var(--clr-primary); color: var(--clr-white); }
    .stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: var(--grid-gap); text-align: center; }
    .stat-item { padding: 24px 16px; }
    .stat-item .num { font-size: 2.8rem; font-weight: 800; color: var(--clr-secondary); line-height: 1.1; }
    .stat-item .label { font-size: 0.95rem; color: rgba(255,255,255,0.55); margin-top: 8px; }

    /* ===== Advantages / Flow ===== */
    .adv-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--grid-gap); }
    .adv-card { background: var(--clr-card); border-radius: var(--radius-md); padding: 28px 24px; box-shadow: var(--shadow-sm); border: 1px solid var(--clr-border-light); transition: var(--transition); position: relative; }
    .adv-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .adv-card .step { position: absolute; top: 16px; right: 20px; font-size: 2.6rem; font-weight: 900; color: rgba(240, 184, 67, 0.10); line-height: 1; }
    .adv-card .adv-icon { width: 44px; height: 44px; border-radius: var(--radius-sm); background: rgba(240, 184, 67, 0.10); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; color: var(--clr-secondary); margin-bottom: 14px; }
    .adv-card h4 { font-size: 1.05rem; margin-bottom: 6px; }
    .adv-card p { font-size: 0.88rem; color: var(--clr-text-light); margin: 0; }

    /* ===== FAQ ===== */
    .faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
    .faq-item { background: var(--clr-card); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); border: 1px solid var(--clr-border-light); overflow: hidden; transition: var(--transition); }
    .faq-item:hover { box-shadow: var(--shadow-md); }
    .faq-question { padding: 18px 24px; font-weight: 600; font-size: 0.98rem; display: flex; align-items: center; justify-content: space-between; cursor: pointer; color: var(--clr-text); background: none; width: 100%; text-align: left; border: none; transition: var(--transition); }
    .faq-question:hover { color: var(--clr-primary-light); }
    .faq-question .icon { font-size: 1.1rem; color: var(--clr-secondary); transition: var(--transition); }
    .faq-question.open .icon { transform: rotate(45deg); }
    .faq-answer { padding: 0 24px 18px; font-size: 0.92rem; color: var(--clr-text-light); line-height: 1.7; display: none; }
    .faq-answer.open { display: block; }

    /* ===== CTA ===== */
    .cta-section { background: linear-gradient(145deg, #0d1b2a, #1a2d5a); text-align: center; padding: 72px 0; }
    .cta-section h2 { color: var(--clr-white); margin-bottom: 12px; }
    .cta-section p { color: rgba(255,255,255,0.6); font-size: 1.05rem; max-width: 560px; margin: 0 auto 28px; }
    .cta-section .btn-group { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }

    /* ===== Footer ===== */
    .site-footer { background: var(--clr-primary); border-top: 1px solid rgba(255,255,255,0.06); padding: 48px 0 24px; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
    .footer-brand .logo { margin-bottom: 12px; }
    .footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.45); max-width: 320px; line-height: 1.7; }
    .footer-col h5 { color: var(--clr-white); font-size: 0.9rem; margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.5px; opacity: 0.7; }
    .footer-col a { display: block; padding: 4px 0; font-size: 0.88rem; color: rgba(255,255,255,0.5); transition: var(--transition); }
    .footer-col a:hover { color: var(--clr-secondary); padding-left: 4px; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
    .footer-bottom p { font-size: 0.82rem; color: rgba(255,255,255,0.35); margin: 0; }
    .footer-bottom a { color: rgba(255,255,255,0.45); font-size: 0.82rem; }
    .footer-bottom a:hover { color: var(--clr-secondary); }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .hero-grid { grid-template-columns: 1fr; gap: 32px; text-align: center; }
        .hero p { margin-left: auto; margin-right: auto; }
        .hero-actions { justify-content: center; }
        .hero-card-deco { max-width: 400px; margin: 0 auto; }
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    }

    @media (max-width: 768px) {
        :root { --nav-height: 64px; --tab-height: 60px; --spacer-section: 56px; --spacer-block: 36px; --grid-gap: 20px; }
        .nav-desktop { display: none; }
        .menu-toggle { display: flex; }
        .nav-desktop.mobile-open { display: flex; flex-direction: column; position: fixed; top: var(--nav-height); left: 0; right: 0; background: rgba(13,27,42,0.98); backdrop-filter: blur(20px); padding: 16px 24px 24px; border-bottom: 1px solid rgba(255,255,255,0.06); gap: 6px; }
        .nav-desktop.mobile-open a { padding: 12px 16px; font-size: 1rem; }
        .nav-cta { margin-left: 0; margin-top: 8px; }
        .bottom-tabs { display: block; }
        body { padding-bottom: var(--tab-height); }
        .hero { min-height: 80vh; padding-top: calc(var(--nav-height) + 16px); }
        .hero h1 { font-size: clamp(1.8rem, 6vw, 2.6rem); }
        .hero p { font-size: 1rem; }
        .hero-card-deco { padding: 20px; }
        .hero-card-deco .stat-num { font-size: 1.5rem; }
        .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        .footer-bottom { flex-direction: column; text-align: center; }
        .stats-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 520px) {
        .container { padding: 0 16px; }
        .hero-card-deco .stat-row { flex-wrap: wrap; gap: 12px; }
        .hero-card-deco .match-item { flex-wrap: wrap; gap: 6px; font-size: 0.8rem; }
        .category-card { flex-direction: column; text-align: center; padding: 20px; }
        .category-card .cat-arrow { display: none; }
        .about-card { padding: 24px 18px; }
        .adv-card { padding: 20px 18px; }
        .btn-lg { padding: 14px 28px; font-size: 0.95rem; }
        .faq-question { padding: 14px 18px; font-size: 0.9rem; }
        .news-card .card-body { padding: 14px 16px 18px; }
    }

    /* ===== Utility ===== */
    .text-center { text-align: center; }
    .mt-1 { margin-top: 8px; }
    .mt-2 { margin-top: 16px; }
    .mb-1 { margin-bottom: 8px; }
    .mb-2 { margin-bottom: 16px; }
    .gap-1 { gap: 8px; }
    .gap-2 { gap: 16px; }
    .flex-center { display: flex; align-items: center; justify-content: center; }
    .bg-alt { background: var(--clr-bg-alt); }
    .rounded { border-radius: var(--radius-md); }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1222f;
            --primary-light: #ff6b75;
            --primary-soft: #fff0f1;
            --secondary: #1d3557;
            --secondary-light: #2d4a7a;
            --accent: #f4a261;
            --accent-light: #f8c992;
            --bg-body: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-weak: #8888a8;
            --text-light: #f0f0f5;
            --border: #e8e8f0;
            --border-light: #f0f0f8;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 12px 36px rgba(230, 57, 70, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

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

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

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        @media (max-width: 768px) {
            .header-inner {
                padding: 0 16px;
            }
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
            font-weight: 800;
        }
        .logo span:last-child {
            color: var(--primary);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-desktop a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .nav-desktop a:hover {
            color: var(--primary);
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .nav-desktop a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-desktop a.active::after {
            width: 100%;
        }
        .nav-cta {
            margin-left: 8px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            cursor: pointer;
            text-align: center;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff !important;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.3);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.2);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary) !important;
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff !important;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.2);
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 1.05rem;
            border-radius: var(--radius-lg);
        }
        .btn-sm {
            padding: 6px 16px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 3px;
            transition: all var(--transition);
        }
        .menu-toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* ===== Mobile Bottom Tab Nav ===== */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid var(--border);
            padding: 6px 0 env(safe-area-inset-bottom, 6px);
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.04);
        }
        .mobile-bottom-nav .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 500px;
            margin: 0 auto;
            padding: 0 12px;
        }
        .mobile-bottom-nav .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--text-weak);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
        }
        .mobile-bottom-nav .tab-item i {
            font-size: 1.3rem;
            transition: color var(--transition);
        }
        .mobile-bottom-nav .tab-item.active {
            color: var(--primary);
        }
        .mobile-bottom-nav .tab-item.active i {
            color: var(--primary);
        }
        .mobile-bottom-nav .tab-item.active::after {
            content: '';
            position: absolute;
            top: -6px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }
        .mobile-bottom-nav .tab-item:hover {
            color: var(--primary);
        }
        .mobile-bottom-nav .tab-item:hover i {
            color: var(--primary);
        }

        /* ===== Mobile Drawer ===== */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 998;
            background: rgba(0, 0, 0, 0.3);
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition);
        }
        .mobile-drawer.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-drawer .drawer-content {
            background: var(--bg-white);
            padding: 24px 16px;
            max-height: 70vh;
            overflow-y: auto;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            box-shadow: var(--shadow-lg);
            transform: translateY(-20px);
            transition: transform var(--transition);
        }
        .mobile-drawer.open .drawer-content {
            transform: translateY(0);
        }
        .mobile-drawer .drawer-content a {
            display: block;
            padding: 14px 16px;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text-primary);
            border-radius: var(--radius-sm);
            transition: background var(--transition), color var(--transition);
        }
        .mobile-drawer .drawer-content a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .mobile-drawer .drawer-content a.active {
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 600;
        }
        .mobile-drawer .drawer-content .drawer-cta {
            margin-top: 16px;
            padding: 12px 16px;
        }
        .mobile-drawer .drawer-content .drawer-cta .btn {
            width: 100%;
            justify-content: center;
        }

        /* ===== Hero / Page Header ===== */
        .page-hero {
            padding: 120px 0 60px;
            background: linear-gradient(135deg, var(--secondary) 0%, var(--bg-dark) 100%);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(244, 162, 97, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .page-hero h1 span {
            color: var(--primary-light);
        }
        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .page-hero .hero-badges {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .page-hero .hero-badges .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 50px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.9);
        }
        .page-hero .hero-badges .badge i {
            color: var(--accent-light);
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 100px 0 48px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .page-hero .hero-badges .badge {
                font-size: 0.75rem;
                padding: 6px 14px;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .page-hero p {
                font-size: 0.9rem;
            }
        }

        /* ===== Section ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark .section-title {
            color: #fff;
        }
        .section-dark .section-sub {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-sub {
            font-size: 1.1rem;
            color: var(--text-weak);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .highlight {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-sm {
                padding: 32px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-sub {
                font-size: 0.95rem;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            padding: 16px 0;
            font-size: 0.85rem;
            color: var(--text-weak);
        }
        .breadcrumb a {
            color: var(--text-weak);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 500;
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 24px;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .card .card-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-soft);
            color: var(--primary);
            border-radius: var(--radius-sm);
            font-size: 1.5rem;
            margin-bottom: 16px;
        }
        .card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .card p {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin-bottom: 0;
        }
        .card .card-tag {
            display: inline-block;
            padding: 4px 12px;
            background: var(--primary-soft);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-top: 12px;
        }
        .card-cover {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .card-cover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .card-cover .cover-img {
            width: 100%;
            height: 200px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.2);
            font-size: 3rem;
            position: relative;
        }
        .card-cover .cover-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.5), transparent);
        }
        .card-cover .cover-img .badge-abs {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .card-cover .cover-body {
            padding: 20px;
        }
        .card-cover .cover-body h3 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .card-cover .cover-body p {
            font-size: 0.85rem;
            color: var(--text-weak);
        }
        .card-cover .cover-body .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 12px;
            font-size: 0.8rem;
            color: var(--text-weak);
        }
        .card-cover .cover-body .meta i {
            margin-right: 4px;
        }

        /* ===== Grid ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-weak);
            font-weight: 500;
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--primary-light);
            margin-bottom: 8px;
            opacity: 0.6;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: background var(--transition);
            user-select: none;
        }
        .faq-item .faq-q:hover {
            background: var(--primary-soft);
        }
        .faq-item .faq-q i {
            color: var(--text-weak);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-a {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }
        .faq-item .faq-a p {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-box .btn {
            background: #fff;
            color: var(--primary) !important;
            border-color: #fff;
        }
        .cta-box .btn:hover {
            background: rgba(255, 255, 255, 0.9);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
        }
        .cta-box .btn-outline-light {
            background: transparent;
            color: #fff !important;
            border-color: rgba(255, 255, 255, 0.5);
        }
        .cta-box .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }
        .cta-box .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        @media (max-width: 768px) {
            .cta-box {
                padding: 40px 24px;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .cta-box p {
                font-size: 0.95rem;
            }
        }

        /* ===== Content List ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .content-item:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .content-item .item-index {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-soft);
            color: var(--primary);
            border-radius: 50%;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .content-item .item-body {
            flex: 1;
        }
        .content-item .item-body h4 {
            font-size: 1.05rem;
            margin-bottom: 4px;
            font-weight: 600;
        }
        .content-item .item-body p {
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-bottom: 0;
        }
        .content-item .item-body .item-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 6px;
            font-size: 0.78rem;
            color: var(--text-weak);
        }
        .content-item .item-body .item-meta i {
            margin-right: 4px;
        }
        .content-item .item-arrow {
            flex-shrink: 0;
            color: var(--text-weak);
            font-size: 1.2rem;
            transition: all var(--transition);
        }
        .content-item:hover .item-arrow {
            color: var(--primary);
            transform: translateX(4px);
        }
        @media (max-width: 768px) {
            .content-item {
                padding: 16px;
                gap: 14px;
                flex-wrap: wrap;
            }
            .content-item .item-index {
                width: 34px;
                height: 34px;
                font-size: 0.95rem;
            }
        }

        /* ===== Tags / Badges ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            cursor: default;
        }
        .tag:hover {
            background: var(--primary-soft);
            border-color: var(--primary-light);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.1);
        }
        .tag.tag-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .tag.tag-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 32px;
        }
        .site-footer .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .site-footer .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .logo .logo-icon {
            background: var(--primary);
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
            line-height: 1.7;
        }
        .site-footer .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .site-footer .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: var(--primary-light);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 80px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer .footer-brand p {
                max-width: 100%;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-desktop {
                gap: 20px;
            }
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .mobile-drawer {
                display: block;
            }
            .mobile-bottom-nav {
                display: block;
            }
            body {
                padding-bottom: 60px;
            }
            .page-hero {
                padding-top: 90px;
            }
        }
        @media (min-width: 769px) {
            .mobile-drawer {
                display: none !important;
            }
            .mobile-bottom-nav {
                display: none !important;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                padding: 0 12px;
            }
            .logo {
                font-size: 1.2rem;
            }
            .logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .cta-box h2 {
                font-size: 1.3rem;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mt-48 {
            margin-top: 48px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

        /* ===== Smooth fade in ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(24px);
            animation: fadeInUp 0.6s ease forwards;
        }
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in-delay-1 {
            animation-delay: 0.1s;
        }
        .fade-in-delay-2 {
            animation-delay: 0.2s;
        }
        .fade-in-delay-3 {
            animation-delay: 0.3s;
        }
        .fade-in-delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: article */
:root {
    --primary: #0a1628;
    --primary-light: #1a2d4a;
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --accent-light: #fef3c7;
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --bg-section: #f1f5f9;
    --bg-dark: #0f1724;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-light: #f8fafc;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --container: 1200px;
    --header-h: 72px;
    --footer-top: 60px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-sans);background:var(--bg-body);color:var(--text-primary);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:inherit;text-decoration:none;transition:var(--transition)}
img{max-width:100%;height:auto;display:block}
button,input,textarea{font:inherit;border:none;outline:none;background:none}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--text-primary)}
h1{font-size:2.25rem;letter-spacing:-0.02em}
h2{font-size:1.75rem;letter-spacing:-0.01em}
h3{font-size:1.25rem}
h4{font-size:1.1rem}
p{margin-bottom:1rem;color:var(--text-secondary)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media(max-width:768px){.container{padding:0 16px}}

/* Header / Nav */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(10,22,40,0.98);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,0.06);height:var(--header-h);display:flex;align-items:center;transition:var(--transition)}
.header-inner{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:inline-flex;align-items:center;gap:8px;font-size:1.35rem;font-weight:800;color:var(--text-light);letter-spacing:-0.03em}
.logo .logo-icon{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-sm);background:var(--accent);color:var(--primary);font-size:1.1rem;font-weight:900}
.logo span{color:var(--accent);margin:0 1px}
.logo:hover{opacity:0.92}
.nav-desktop{display:flex;align-items:center;gap:8px}
.nav-desktop a{padding:8px 18px;border-radius:var(--radius-sm);font-size:0.95rem;font-weight:500;color:rgba(255,255,255,0.7);transition:var(--transition);position:relative}
.nav-desktop a:hover{color:var(--text-light);background:rgba(255,255,255,0.06)}
.nav-desktop a.active{color:var(--accent);background:rgba(245,158,11,0.1)}
.nav-desktop a.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:20px;height:3px;border-radius:2px;background:var(--accent)}
.nav-cta{margin-left:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 28px;border-radius:var(--radius-sm);font-size:0.95rem;font-weight:600;transition:var(--transition);cursor:pointer;border:2px solid transparent}
.btn-primary{background:var(--accent);color:var(--primary);border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);transform:translateY(-2px);box-shadow:0 8px 24px rgba(245,158,11,0.3)}
.btn-outline{background:transparent;color:var(--text-light);border-color:rgba(255,255,255,0.2)}
.btn-outline:hover{background:rgba(255,255,255,0.08);border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-sm{padding:6px 16px;font-size:0.85rem}
.menu-toggle{display:none;flex-direction:column;gap:5px;width:32px;height:32px;align-items:center;justify-content:center;cursor:pointer;background:transparent;border:none;padding:4px}
.menu-toggle span{display:block;width:24px;height:2.5px;border-radius:3px;background:var(--text-light);transition:var(--transition)}
.menu-toggle.active span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.menu-toggle.active span:nth-child(2){opacity:0}
.menu-toggle.active span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
@media(max-width:768px){
    .nav-desktop{display:none}
    .menu-toggle{display:flex}
    .nav-desktop.open{display:flex;flex-direction:column;position:absolute;top:var(--header-h);left:0;right:0;background:rgba(10,22,40,0.99);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding:16px 24px 24px;gap:4px;border-bottom:1px solid rgba(255,255,255,0.06)}
    .nav-desktop.open a{padding:12px 16px;font-size:1rem;width:100%}
    .nav-desktop.open .nav-cta{margin-left:0;margin-top:8px;width:100%}
    .nav-desktop.open .nav-cta .btn{width:100%;justify-content:center}
}

/* Mobile Bottom Tab */
.mobile-tab{display:none;position:fixed;bottom:0;left:0;right:0;z-index:999;background:rgba(10,22,40,0.98);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:1px solid rgba(255,255,255,0.06);padding:6px 0 env(safe-area-inset-bottom,6px);justify-content:space-around;align-items:center}
.mobile-tab a{display:flex;flex-direction:column;align-items: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)}
.mobile-tab a i{font-size:1.2rem}
.mobile-tab a.active{color:var(--accent)}
.mobile-tab a.active i{color:var(--accent)}
.mobile-tab a:hover{color:var(--text-light)}
@media(max-width:768px){
    .mobile-tab{display:flex}
    body{padding-bottom:64px}
}

/* Breadcrumb */
.breadcrumb{padding:20px 0 8px;font-size:0.9rem;color:var(--text-muted);display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.breadcrumb a{color:var(--text-secondary);transition:var(--transition);padding:2px 6px;border-radius:4px}
.breadcrumb a:hover{color:var(--accent);background:var(--accent-light)}
.breadcrumb .sep{color:var(--text-muted);margin:0 4px;font-size:0.75rem}
.breadcrumb .current{color:var(--text-primary);font-weight:600;max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* Article Section */
.article-section{padding:24px 0 60px}
.article-header{margin-bottom:32px}
.article-meta{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;margin-top:16px;font-size:0.9rem;color:var(--text-muted)}
.article-meta .category{display:inline-flex;align-items:center;gap:6px;padding:4px 14px;border-radius:20px;background:var(--accent-light);color:var(--accent-hover);font-weight:600;font-size:0.8rem}
.article-meta .date i,.article-meta .category i{font-size:0.75rem}
.article-body{background:var(--bg-card);border-radius:var(--radius-lg);padding:40px 48px;box-shadow:var(--shadow-sm);border:1px solid var(--border)}
.article-body h2{font-size:1.5rem;margin-top:32px;margin-bottom:16px;padding-bottom:8px;border-bottom:2px solid var(--accent-light)}
.article-body h3{font-size:1.2rem;margin-top:24px;margin-bottom:12px;color:var(--text-primary)}
.article-body p{line-height:1.9;margin-bottom:1.2rem;color:var(--text-secondary)}
.article-body ul,.article-body ol{padding-left:24px;margin-bottom:1.2rem;color:var(--text-secondary)}
.article-body li{margin-bottom:8px;line-height:1.8;list-style:disc}
.article-body ol li{list-style:decimal}
.article-body a{color:var(--accent-hover);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent)}
.article-body blockquote{border-left:4px solid var(--accent);background:var(--bg-section);padding:16px 24px;margin:24px 0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary);font-style:italic}
.article-body img{border-radius:var(--radius);margin:24px auto;max-width:100%;box-shadow:var(--shadow-sm)}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:0.9rem}
.article-body th,.article-body td{padding:12px 16px;border:1px solid var(--border);text-align:left}
.article-body th{background:var(--primary);color:var(--text-light);font-weight:600}
.article-body td{color:var(--text-secondary)}
.article-body code{background:var(--bg-section);padding:2px 8px;border-radius:4px;font-size:0.9em;color:var(--primary)}
.article-body pre{background:var(--primary);color:var(--text-light);padding:20px 24px;border-radius:var(--radius);overflow-x:auto;margin:24px 0;font-size:0.85rem;line-height:1.6}
.article-footer{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;padding-top:24px;margin-top:32px;border-top:1px solid var(--border);gap:16px}
.article-tags{display:flex;flex-wrap:wrap;gap:8px}
.article-tags .tag{padding:4px 14px;border-radius:20px;background:var(--bg-section);color:var(--text-secondary);font-size:0.8rem;font-weight:500;transition:var(--transition);border:1px solid var(--border)}
.article-tags .tag:hover{background:var(--accent-light);color:var(--accent-hover);border-color:var(--accent)}
.article-share{display:flex;align-items:center;gap:10px;font-size:0.85rem;color:var(--text-muted)}
.article-share a{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--bg-section);color:var(--text-secondary);transition:var(--transition);border:1px solid var(--border)}
.article-share a:hover{background:var(--accent);color:var(--primary);border-color:var(--accent);transform:translateY(-2px)}
@media(max-width:768px){
    .article-body{padding:24px 20px;border-radius:var(--radius)}
    .article-header h1{font-size:1.5rem}
    .breadcrumb .current{max-width:180px}
}
@media(max-width:520px){
    .article-body{padding:16px 12px}
    .article-header h1{font-size:1.3rem}
    .article-meta{gap:8px 12px;font-size:0.8rem}
    .breadcrumb{font-size:0.8rem}
    .article-footer{flex-direction:column;align-items:flex-start}
}

/* Not Found */
.not-found{text-align:center;padding:80px 20px;background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border)}
.not-found i{font-size:3.5rem;color:var(--text-muted);margin-bottom:20px;display:block}
.not-found h2{font-size:1.5rem;margin-bottom:12px}
.not-found p{color:var(--text-secondary);margin-bottom:24px;max-width:480px;margin-left:auto;margin-right:auto}

/* Recommendation */
.recommend-section{padding:48px 0 60px;background:var(--bg-section)}
.section-header{text-align:center;margin-bottom:40px}
.section-header h2{font-size:1.75rem;margin-bottom:8px;position:relative;display:inline-block}
.section-header h2::after{content:'';display:block;width:48px;height:4px;border-radius:2px;background:var(--accent);margin:12px auto 0}
.section-header p{color:var(--text-secondary);max-width:600px;margin:8px auto 0;font-size:1rem}
.recommend-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.recommend-card{background:var(--bg-card);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:var(--transition);text-align:center}
.recommend-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--accent)}
.recommend-card i{font-size:2.2rem;color:var(--accent);margin-bottom:16px;display:block}
.recommend-card h4{font-size:1.1rem;margin-bottom:8px}
.recommend-card p{font-size:0.9rem;color:var(--text-secondary);margin-bottom:16px}
.recommend-card .btn{margin-top:4px}
@media(max-width:768px){
    .recommend-grid{grid-template-columns:1fr 1fr;gap:16px}
    .section-header h2{font-size:1.4rem}
}
@media(max-width:520px){
    .recommend-grid{grid-template-columns:1fr}
}

/* CTA Section */
.cta-section{padding:60px 0;background:var(--primary);position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;top:-60%;right:-20%;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(245,158,11,0.08) 0%,transparent 70%)}
.cta-section::after{content:'';position:absolute;bottom:-40%;left:-10%;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(245,158,11,0.05) 0%,transparent 70%)}
.cta-inner{position:relative;z-index:1;text-align:center;max-width:680px;margin:0 auto}
.cta-inner h2{color:var(--text-light);font-size:1.75rem;margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,0.7);margin-bottom:28px;font-size:1.05rem}
.cta-inner .btn-group{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}
@media(max-width:520px){
    .cta-section{padding:40px 0}
    .cta-inner h2{font-size:1.3rem}
    .cta-inner .btn-group{flex-direction:column;align-items:center}
}

/* Footer */
.site-footer{background:var(--primary);color:rgba(255,255,255,0.7);padding:60px 0 32px;border-top:1px solid rgba(255,255,255,0.06)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .logo{margin-bottom:16px;font-size:1.2rem}
.footer-brand p{font-size:0.9rem;line-height:1.7;color:rgba(255,255,255,0.6);max-width:360px}
.footer-col h5{color:var(--text-light);font-size:1rem;font-weight:600;margin-bottom:16px;letter-spacing:0.02em}
.footer-col a{display:block;padding:5px 0;font-size:0.9rem;color:rgba(255,255,255,0.6);transition:var(--transition);border-radius:4px}
.footer-col a:hover{color:var(--accent);padding-left:6px}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;padding-top:24px;border-top:1px solid rgba(255,255,255,0.06);font-size:0.85rem;color:rgba(255,255,255,0.4);gap:12px}
.footer-bottom a{color:rgba(255,255,255,0.4);transition:var(--transition)}
.footer-bottom a:hover{color:var(--accent)}
@media(max-width:768px){
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .footer-brand{grid-column:1 / -1}
}
@media(max-width:520px){
    .footer-grid{grid-template-columns:1fr;gap:24px}
    .footer-bottom{flex-direction:column;text-align:center}
}

/* Scroll to top */
.scroll-top{position:fixed;bottom:90px;right:24px;z-index:50;width:44px;height:44px;border-radius:50%;background:var(--accent);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.2rem;box-shadow:var(--shadow);transition:var(--transition);opacity:0;visibility:hidden;transform:translateY(12px);cursor:pointer;border:none}
.scroll-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.scroll-top:hover{background:var(--accent-hover);transform:translateY(-3px);box-shadow:var(--shadow-lg)}
@media(max-width:768px){
    .scroll-top{bottom:80px;right:16px;width:40px;height:40px;font-size:1rem}
}

/* Utility */
.text-center{text-align:center}
.mt-4{margin-top:24px}
.mb-4{margin-bottom:24px}
.gap-2{gap:8px}
.flex-center{display:flex;align-items:center;justify-content:center}

/* Animation */
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.animate-fade{animation:fadeInUp 0.5s ease-out both}
.animate-delay-1{animation-delay:0.1s}
.animate-delay-2{animation-delay:0.2s}
.animate-delay-3{animation-delay:0.3s}