/* roulang page: index */
:root {
        --primary: #0e7a7a;
        --primary-dark: #075b5b;
        --primary-light: #e2f0f0;
        --accent: #f59e0b;
        --accent-light: #fef3e0;
        --bg: #f4f8f8;
        --bg-white: #ffffff;
        --text: #152a38;
        --text-muted: #5b7285;
        --border: #dfe8ea;
        --radius: 14px;
        --radius-lg: 24px;
        --shadow: 0 4px 22px rgba(14, 122, 122, 0.07);
        --shadow-hover: 0 12px 40px rgba(14, 122, 122, 0.15);
        --transition: all 0.3s ease;
        --font: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
    body { font-family: var(--font); font-size: 16px; line-height: 1.75; color: var(--text); background: var(--bg); overflow-x: hidden; }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--primary); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-dark); }
    ul, ol { list-style: none; }
    button, input, select, textarea { font-family: inherit; font-size: 100%; }
    .container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }
    .section { padding: 90px 0; }
    .section-head { margin-bottom: 48px; text-align: center; }
    .section-tag {
        display: inline-block; background: var(--primary-light); color: var(--primary);
        font-size: 13px; font-weight: 700; letter-spacing: 1.5px; padding: 6px 18px;
        border-radius: 30px; margin-bottom: 14px; text-transform: uppercase;
    }
    .section-title { font-size: 36px; font-weight: 800; line-height: 1.3; color: var(--text); margin-bottom: 10px; letter-spacing: -0.5px; }
    .section-sub { color: var(--text-muted); font-size: 16px; max-width: 640px; margin: 0 auto; }

    /* 按钮 */
    .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 28px; font-size: 16px; font-weight: 600; border-radius: 50px; transition: var(--transition); border: 2px solid transparent; cursor: pointer; line-height: 1.4; }
    .btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(14, 122, 122, 0.3); }
    .btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(14, 122, 122, 0.4); }
    .btn-outline { border-color: var(--primary); color: var(--primary); background: transparent; }
    .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
    .btn-accent { background: var(--accent); color: #1a1a1a; box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3); }
    .btn-accent:hover { background: #e08e00; color: #1a1a1a; transform: translateY(-2px); }
    .btn-white { background: #fff; color: var(--primary); box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1); }
    .btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15); color: var(--primary); }
    .btn-large { padding: 15px 38px; font-size: 17px; }
    .btn:focus-visible { outline: 3px solid rgba(14, 122, 122, 0.5); outline-offset: 3px; }

    /* 导航 */
    .site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
    .navbar { padding: 0; }
    .site-header .navbar-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; }
    .navbar-brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--text); padding: 0; }
    .navbar-brand:hover { color: var(--primary); }
    .brand-icon { width: 40px; height: 40px; background: var(--primary); color: #fff; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 18px; box-shadow: 0 4px 12px rgba(14, 122, 122, 0.3); }
    .brand-text { letter-spacing: 0.5px; }
    .nav-center { display: flex; gap: 8px; }
    .nav-link { display: inline-block; padding: 8px 18px !important; font-size: 15px; font-weight: 600; color: var(--text-muted) !important; border-radius: 30px; transition: var(--transition); }
    .nav-link:hover { color: var(--primary) !important; background: var(--primary-light); }
    .nav-link.active { color: var(--primary) !important; background: var(--primary-light); }
    .nav-cta { margin-left: 8px; }

    /* 移动端底部Tab */
    .mobile-tabbar { display: none; }
    @media (max-width: 991.98px) {
        .nav-center, .nav-cta { display: none; }
        .site-header { display: none; }
        .mobile-tabbar {
            display: flex; position: fixed; bottom: 0; left: 0; right: 0; z-index: 999;
            background: rgba(255, 255, 255, 0.98); backdrop-filter: blur(12px);
            border-top: 1px solid var(--border); padding: 8px 0; justify-content: space-around;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
        }
        .mobile-tabbar .tab-item { display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 8px 16px; border-radius: 12px; color: var(--text-muted); font-size: 12px; font-weight: 600; transition: var(--transition); }
        .mobile-tabbar .tab-item i { font-size: 20px; }
        .mobile-tabbar .tab-item.active { color: var(--primary); background: var(--primary-light); }
        .mobile-tabbar .tab-item:hover { color: var(--primary); }
        body { padding-bottom: 70px; }
    }

    /* Hero */
    .hero { position: relative; min-height: 620px; display: flex; align-items: center; overflow: hidden; background: #0b3b3b; }
    .hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.35; }
    .hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(6, 40, 40, 0.9) 0%, rgba(14, 122, 122, 0.6) 60%, rgba(7, 91, 91, 0.8) 100%); }
    .hero .container { position: relative; z-index: 2; }
    .hero-inner { max-width: 720px; padding: 60px 0; }
    .hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255, 255, 255, 0.15); border: 1px solid rgba(255, 255, 255, 0.25); color: #fff; padding: 8px 20px; border-radius: 30px; font-size: 14px; font-weight: 600; margin-bottom: 24px; backdrop-filter: blur(6px); }
    .hero h1 { color: #fff; font-size: 52px; font-weight: 800; line-height: 1.2; margin-bottom: 20px; letter-spacing: -1px; }
    .hero-desc { color: rgba(255, 255, 255, 0.92); font-size: 18px; line-height: 1.8; margin-bottom: 38px; max-width: 560px; }
    .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
    .hero-stats { display: flex; gap: 30px; margin-top: 50px; }
    .hero-stat { color: #fff; }
    .hero-stat .num { font-size: 28px; font-weight: 800; display: block; }
    .hero-stat .lbl { font-size: 14px; opacity: 0.75; }

    /* 统计卡片 */
    .stats-section { padding: 0; margin-top: -60px; position: relative; z-index: 5; }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; background: var(--bg-white); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow); border: 1px solid var(--border); }
    .stat-card { text-align: center; padding: 16px; border-right: 1px solid var(--border); }
    .stat-card:last-child { border-right: none; }
    .stat-number { font-size: 36px; font-weight: 800; color: var(--primary); line-height: 1.2; }
    .stat-label { color: var(--text-muted); font-size: 14px; margin-top: 8px; font-weight: 600; }

    /* 特性卡片 */
    .feature-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 24px; height: 100%; transition: var(--transition); }
    .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: transparent; }
    .feature-card .icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 20px; background: var(--primary-light); color: var(--primary); }
    .feature-card:nth-child(2) .icon { background: var(--accent-light); color: var(--accent); }
    .feature-card:nth-child(3) .icon { background: rgba(99, 102, 241, 0.1); color: #6366f1; }
    .feature-card:nth-child(4) .icon { background: rgba(16, 185, 129, 0.1); color: #10b981; }
    .feature-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
    .feature-card p { color: var(--text-muted); font-size: 14px; line-height: 1.7; margin: 0; }

    /* 分类卡片 */
    .category-card { display: block; position: relative; border-radius: var(--radius-lg); overflow: hidden; height: 340px; box-shadow: var(--shadow); transition: var(--transition); }
    .category-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
    .category-card:hover img { transform: scale(1.06); }
    .category-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0, 0, 0, 0) 20%, rgba(7, 55, 55, 0.92) 100%); display: flex; flex-direction: column; justify-content: flex-end; padding: 32px; color: #fff; }
    .category-overlay h3 { color: #fff; font-size: 24px; font-weight: 700; margin-bottom: 6px; }
    .category-overlay p { color: rgba(255, 255, 255, 0.85); font-size: 14px; margin-bottom: 16px; }
    .category-overlay .btn { align-self: flex-start; font-size: 14px; padding: 8px 22px; }

    /* 资讯列表 */
    .latest-section { background: var(--bg-white); }
    .latest-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .latest-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; transition: var(--transition); display: block; color: var(--text); height: 100%; }
    .latest-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: transparent; color: var(--text); }
    .latest-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
    .badge-cat { background: var(--primary-light); color: var(--primary); font-weight: 600; font-size: 12px; padding: 4px 14px; border-radius: 20px; }
    .latest-date { color: var(--text-muted); font-size: 13px; }
    .latest-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; line-height: 1.5; }
    .latest-card p { color: var(--text-muted); font-size: 14px; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .read-more { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
    .read-more i { transition: transform 0.3s ease; }
    .latest-card:hover .read-more i { transform: translateX(4px); }
    .empty-text { text-align: center; color: var(--text-muted); padding: 60px 20px; font-size: 16px; background: var(--bg); border-radius: var(--radius); grid-column: 1 / -1; }

    /* 流程 */
    .process-section { background: var(--bg-white); }
    .process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; position: relative; }
    .process-item { text-align: center; padding: 40px 28px; background: var(--bg); border-radius: var(--radius); border: 1px solid var(--border); transition: var(--transition); }
    .process-item:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
    .process-number { width: 64px; height: 64px; border-radius: 50%; background: var(--primary); color: #fff; font-size: 22px; font-weight: 800; display: flex; align-items: center; justify-content: center; margin: 0 auto 22px; box-shadow: 0 6px 20px rgba(14, 122, 122, 0.3); }
    .process-item:nth-child(2) .process-number { background: var(--accent); box-shadow: 0 6px 20px rgba(245, 158, 11, 0.3); }
    .process-item:nth-child(3) .process-number { background: #6366f1; box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3); }
    .process-item h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
    .process-item p { color: var(--text-muted); font-size: 14px; margin: 0; }

    /* FAQ */
    .faq-section { background: var(--bg-white); }
    .accordion-item { border: 1px solid var(--border) !important; border-radius: var(--radius) !important; margin-bottom: 14px; overflow: hidden; }
    .accordion-item:last-child { margin-bottom: 0; }
    .accordion-button { font-weight: 700; font-size: 16px; color: var(--text); padding: 18px 24px; background: var(--bg); }
    .accordion-button:not(.collapsed) { background: var(--primary-light); color: var(--primary); box-shadow: none; }
    .accordion-button:focus { box-shadow: none; border-color: var(--primary); }
    .accordion-body { padding: 20px 24px; color: var(--text-muted); line-height: 1.8; }

    /* CTA */
    .cta-section { background: var(--primary); position: relative; overflow: hidden; }
    .cta-section::before { content: ''; position: absolute; top: -50%; right: -20%; width: 500px; height: 500px; border-radius: 50%; background: rgba(255, 255, 255, 0.06); }
    .cta-section::after { content: ''; position: absolute; bottom: -60%; left: -10%; width: 400px; height: 400px; border-radius: 50%; background: rgba(255, 255, 255, 0.04); }
    .cta-inner { position: relative; z-index: 2; text-align: center; padding: 60px 0; max-width: 640px; margin: 0 auto; }
    .cta-inner h2 { color: #fff; font-size: 36px; font-weight: 800; margin-bottom: 16px; }
    .cta-inner p { color: rgba(255, 255, 255, 0.85); font-size: 16px; margin-bottom: 32px; }
    .cta-inner .btn { background: #fff; color: var(--primary); }
    .cta-inner .btn:hover { background: var(--accent); color: #1a1a1a; }

    /* 页脚 */
    .site-footer { background: #0c2f36; color: rgba(255, 255, 255, 0.75); padding: 64px 0 24px; }
    .site-footer .footer-brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 18px; }
    .site-footer .brand-icon { background: #fff; color: var(--primary); }
    .site-footer p { color: rgba(255, 255, 255, 0.6); font-size: 14px; line-height: 1.8; margin-bottom: 10px; }
    .site-footer h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 20px; }
    .site-footer .footer-links a { display: block; color: rgba(255, 255, 255, 0.6); font-size: 14px; padding: 6px 0; transition: var(--transition); }
    .site-footer .footer-links a:hover { color: #fff; padding-left: 6px; }
    .site-footer .footer-contact p { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
    .site-footer .footer-contact i { color: var(--accent); width: 20px; text-align: center; }
    .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 24px; margin-top: 48px; text-align: center; font-size: 13px; color: rgba(255, 255, 255, 0.45); }
    .footer-bottom a { color: rgba(255, 255, 255, 0.6); }

    /* 响应式 */
    @media (max-width: 991.98px) {
        .section { padding: 60px 0; }
        .hero { min-height: 520px; }
        .hero h1 { font-size: 40px; }
        .stats-grid { grid-template-columns: repeat(2, 1fr); padding: 24px; }
        .stat-card { border-right: none; border-bottom: 1px solid var(--border); }
        .stat-card:nth-child(odd) { border-right: 1px solid var(--border); }
        .stat-card:nth-last-child(-n+2) { border-bottom: none; }
        .latest-grid { grid-template-columns: 1fr; }
        .process-grid { grid-template-columns: 1fr; gap: 20px; }
        .section-title { font-size: 30px; }
    }
    @media (max-width: 767.98px) {
        .hero { min-height: 460px; }
        .hero h1 { font-size: 32px; }
        .hero-desc { font-size: 16px; }
        .hero-stats { flex-wrap: wrap; gap: 16px; }
        .hero-stat .num { font-size: 22px; }
        .stats-grid { grid-template-columns: 1fr 1fr; }
        .stat-number { font-size: 28px; }
        .category-card { height: 260px; }
        .cta-inner h2 { font-size: 28px; }
        .site-footer { padding: 48px 0 20px; }
    }
    @media (max-width: 520px) {
        .hero-actions { flex-direction: column; width: 100%; }
        .hero-actions .btn { width: 100%; }
        .stats-section { margin-top: -30px; }
        .stats-grid { grid-template-columns: 1fr 1fr; padding: 18px; }
        .latest-card { padding: 20px; }
        .section-title { font-size: 26px; }
    }

/* roulang page: category1 */
:root {
        --primary: #0a2a4a;
        --primary-light: #123b66;
        --accent: #0fb5a6;
        --accent-dark: #0a8f83;
        --accent-light: #d5f5f1;
        --bg: #f5f8fb;
        --bg-white: #ffffff;
        --bg-dark: #081d33;
        --text: #14293d;
        --text-weak: #5f7590;
        --border: #e3eaf2;
        --radius: 18px;
        --radius-sm: 12px;
        --radius-xs: 8px;
        --shadow: 0 10px 30px rgba(10, 42, 74, 0.08);
        --shadow-hover: 0 16px 44px rgba(10, 42, 74, 0.15);
        --transition: 0.3s ease;
        --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", Arial, sans-serif;
    }
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-family);
        background-color: var(--bg);
        color: var(--text);
        line-height: 1.7;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
    }
    a {
        text-decoration: none;
        color: inherit;
        transition: color var(--transition);
    }
    img {
        max-width: 100%;
        display: block;
    }
    button,
    input {
        font-family: inherit;
    }
    .container {
        max-width: 1200px;
        padding-left: 24px;
        padding-right: 24px;
    }

    /* ===== Header ===== */
    .site-header {
        background: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid rgba(227, 234, 242, 0.7);
        position: sticky;
        top: 0;
        z-index: 1000;
        box-shadow: 0 4px 24px rgba(10, 42, 74, 0.04);
    }
    .navbar-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
        gap: 20px;
    }
    .navbar-brand {
        display: flex;
        align-items: center;
        gap: 12px;
        font-weight: 700;
        font-size: 1.15rem;
        letter-spacing: 0.3px;
        color: var(--primary);
        white-space: nowrap;
    }
    .navbar-brand .brand-icon {
        width: 40px;
        height: 40px;
        border-radius: 12px;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 1.1rem;
        flex-shrink: 0;
        box-shadow: 0 6px 16px rgba(15, 181, 166, 0.3);
    }
    .navbar-brand .brand-text {
        font-weight: 700;
        color: var(--primary);
    }
    .nav-center {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .nav-link {
        display: inline-flex;
        align-items: center;
        padding: 10px 18px;
        border-radius: 999px;
        font-size: 0.95rem;
        font-weight: 500;
        color: var(--text);
        transition: all var(--transition);
    }
    .nav-link:hover {
        color: var(--accent-dark);
        background: var(--accent-light);
    }
    .nav-link.active {
        color: var(--accent-dark);
        background: var(--accent-light);
        font-weight: 600;
    }
    .nav-link.active::before {
        content: "";
        display: inline-block;
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--accent);
        margin-right: 8px;
        vertical-align: middle;
    }
    .nav-cta.btn-small {
        padding: 9px 22px;
        font-size: 0.88rem;
        border-radius: 999px;
        font-weight: 600;
    }

    /* ===== Buttons ===== */
    .btn {
        border-radius: 999px;
        padding: 12px 32px;
        font-weight: 600;
        font-size: 1rem;
        border: none;
        transition: all var(--transition);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
    }
    .btn-primary {
        background: var(--primary);
        color: #fff;
        box-shadow: 0 6px 18px rgba(10, 42, 74, 0.18);
    }
    .btn-primary:hover {
        background: var(--primary-light);
        transform: translateY(-2px);
        box-shadow: 0 8px 28px rgba(10, 42, 74, 0.26);
        color: #fff;
    }
    .btn-accent {
        background: var(--accent);
        color: #fff;
        box-shadow: 0 6px 18px rgba(15, 181, 166, 0.25);
    }
    .btn-accent:hover {
        background: var(--accent-dark);
        transform: translateY(-2px);
        color: #fff;
        box-shadow: 0 8px 24px rgba(15, 181, 166, 0.35);
    }
    .btn-outline {
        background: transparent;
        border: 2px solid rgba(255, 255, 255, 0.7);
        color: #fff;
    }
    .btn-outline:hover {
        border-color: #fff;
        background: rgba(255, 255, 255, 0.12);
        color: #fff;
        transform: translateY(-2px);
    }
    .btn:focus-visible {
        outline: 3px solid var(--accent);
        outline-offset: 2px;
    }

    /* ===== Hero ===== */
    .page-hero {
        position: relative;
        padding: 110px 0 90px;
        background: linear-gradient(135deg, rgba(8, 29, 51, 0.92), rgba(10, 42, 74, 0.82)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        color: #fff;
    }
    .breadcrumb-box {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.7);
        margin-bottom: 20px;
    }
    .breadcrumb-box a:hover {
        color: var(--accent);
    }
    .breadcrumb-box .sep {
        opacity: 0.5;
    }
    .breadcrumb-box .current {
        color: #fff;
    }
    .page-hero h1 {
        font-size: clamp(2rem, 4vw, 3.2rem);
        font-weight: 800;
        line-height: 1.25;
        margin-bottom: 18px;
        letter-spacing: 1px;
    }
    .page-hero .hero-sub {
        font-size: 1.08rem;
        color: rgba(255, 255, 255, 0.85);
        max-width: 640px;
        margin-bottom: 34px;
        line-height: 1.8;
    }
    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
    }
    .hero-badges {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 26px;
    }
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(255, 255, 255, 0.12);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 999px;
        padding: 5px 14px;
        font-size: 0.82rem;
        color: rgba(255, 255, 255, 0.9);
        backdrop-filter: blur(4px);
    }
    .hero-badge i {
        color: var(--accent);
    }

    /* ===== Section spacing ===== */
    .section-block {
        padding: 90px 0;
    }
    .section-block-alt {
        background: var(--bg-white);
        padding: 90px 0;
    }
    .section-title {
        font-size: clamp(1.7rem, 3vw, 2.4rem);
        font-weight: 800;
        color: var(--primary);
        margin-bottom: 12px;
        letter-spacing: 0.5px;
    }
    .section-desc {
        font-size: 1rem;
        color: var(--text-weak);
        max-width: 620px;
        margin-bottom: 48px;
        line-height: 1.8;
    }
    .text-center .section-desc {
        margin-left: auto;
        margin-right: auto;
    }
    .section-head {
        text-align: center;
        margin-bottom: 48px;
    }
    .section-head .section-title::after {
        content: "";
        display: block;
        width: 48px;
        height: 4px;
        border-radius: 4px;
        background: linear-gradient(90deg, var(--accent), var(--primary));
        margin: 12px auto 0;
    }

    /* ===== KPI Data ===== */
    .status-bar {
        background: var(--bg-white);
        border-bottom: 1px solid var(--border);
        padding: 0 0 40px;
        margin-top: -50px;
        position: relative;
        z-index: 5;
    }
    .kpi-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
        background: #fff;
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 32px 28px;
        box-shadow: var(--shadow);
    }
    .kpi-item {
        text-align: center;
        padding: 12px 8px;
        border-right: 1px solid var(--border);
    }
    .kpi-item:last-child {
        border-right: none;
    }
    .kpi-num {
        font-size: 2.1rem;
        font-weight: 800;
        color: var(--primary);
        line-height: 1.3;
        font-family: "Segoe UI", var(--font-family);
    }
    .kpi-num span {
        color: var(--accent);
        font-size: 1.2rem;
        font-weight: 700;
    }
    .kpi-label {
        font-size: 0.88rem;
        color: var(--text-weak);
        margin-top: 4px;
    }
    .kpi-icon {
        color: var(--accent);
        font-size: 1.4rem;
        margin-bottom: 8px;
    }

    /* ===== Cards ===== */
    .entry-methods .card {
        border: 1px solid var(--border);
        border-radius: var(--radius);
        overflow: hidden;
        background: #fff;
        box-shadow: var(--shadow);
        transition: all var(--transition);
        height: 100%;
    }
    .entry-methods .card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-hover);
        border-color: rgba(15, 181, 166, 0.4);
    }
    .card-img-wrap {
        position: relative;
        height: 190px;
        overflow: hidden;
    }
    .card-img-wrap img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }
    .entry-methods .card:hover .card-img-wrap img {
        transform: scale(1.05);
    }
    .card-img-wrap .tag-badge {
        position: absolute;
        top: 14px;
        left: 14px;
        background: rgba(10, 42, 74, 0.82);
        color: #fff;
        border-radius: 999px;
        padding: 4px 14px;
        font-size: 0.78rem;
        font-weight: 600;
        backdrop-filter: blur(6px);
        border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .card-body-wrap {
        padding: 24px;
    }
    .card-body-wrap h3 {
        font-size: 1.18rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 10px;
    }
    .card-body-wrap p {
        font-size: 0.9rem;
        color: var(--text-weak);
        line-height: 1.7;
        margin-bottom: 16px;
    }
    .card-link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: var(--accent-dark);
        font-size: 0.88rem;
        font-weight: 600;
    }
    .card-link:hover {
        gap: 10px;
        color: var(--primary);
    }

    /* ===== Process ===== */
    .process-section {
        background: linear-gradient(135deg, rgba(8, 29, 51, 0.95), rgba(10, 42, 74, 0.9)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        color: #fff;
        position: relative;
    }
    .process-section .section-title {
        color: #fff;
    }
    .process-section .section-desc {
        color: rgba(255, 255, 255, 0.7);
    }
    .process-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        position: relative;
    }
    .process-item {
        background: rgba(255, 255, 255, 0.07);
        border: 1px solid rgba(255, 255, 255, 0.14);
        border-radius: var(--radius);
        padding: 32px 22px;
        text-align: center;
        transition: all var(--transition);
        backdrop-filter: blur(6px);
        position: relative;
    }
    .process-item:hover {
        background: rgba(255, 255, 255, 0.13);
        transform: translateY(-4px);
        border-color: rgba(15, 181, 166, 0.5);
    }
    .process-num {
        width: 44px;
        height: 44px;
        border-radius: 50%;
        background: var(--accent);
        color: #fff;
        font-weight: 700;
        font-size: 1.1rem;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 16px;
        box-shadow: 0 6px 18px rgba(15, 181, 166, 0.4);
    }
    .process-icon {
        font-size: 1.5rem;
        color: var(--accent);
        margin-bottom: 10px;
    }
    .process-item h3 {
        font-size: 1.05rem;
        font-weight: 700;
        margin-bottom: 8px;
        color: #fff;
    }
    .process-item p {
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.7);
        line-height: 1.6;
    }

    /* ===== Quality Features ===== */
    .feature-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    .feature-item {
        display: flex;
        gap: 18px;
        padding: 26px;
        background: var(--bg-white);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        transition: all var(--transition);
    }
    .feature-item:hover {
        box-shadow: var(--shadow-hover);
        border-color: rgba(15, 181, 166, 0.35);
        transform: translateY(-3px);
    }
    .feature-icon {
        width: 54px;
        height: 54px;
        border-radius: 14px;
        background: var(--accent-light);
        color: var(--accent-dark);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.3rem;
        flex-shrink: 0;
    }
    .feature-item h3 {
        font-size: 1.05rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 8px;
    }
    .feature-item p {
        font-size: 0.9rem;
        color: var(--text-weak);
        line-height: 1.7;
        margin-bottom: 0;
    }

    /* ===== Notice ===== */
    .notice-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .notice-item {
        background: #fff;
        border: 1px solid var(--border);
        border-left: 4px solid var(--accent);
        border-radius: var(--radius-sm);
        padding: 22px 24px;
        display: flex;
        gap: 16px;
        transition: all var(--transition);
    }
    .notice-item:hover {
        box-shadow: var(--shadow);
    }
    .notice-icon {
        color: var(--accent);
        font-size: 1.3rem;
        margin-top: 2px;
        flex-shrink: 0;
    }
    .notice-item h4 {
        font-size: 1rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 6px;
    }
    .notice-item p {
        font-size: 0.88rem;
        color: var(--text-weak);
        line-height: 1.6;
        margin-bottom: 0;
    }

    /* ===== FAQ ===== */
    .faq-section {
        background: var(--bg-white);
        padding: 90px 0;
    }
    .faq-list {
        max-width: 820px;
        margin: 0 auto;
    }
    .accordion-item {
        border: 1px solid var(--border) !important;
        border-radius: var(--radius-sm) !important;
        margin-bottom: 14px;
        box-shadow: 0 2px 10px rgba(10, 42, 74, 0.03);
        overflow: hidden;
    }
    .accordion-button {
        padding: 20px 24px;
        font-size: 1rem;
        font-weight: 600;
        color: var(--primary);
        background: #fff;
        border: none;
        transition: all var(--transition);
    }
    .accordion-button:not(.collapsed) {
        background: var(--accent-light);
        color: var(--primary);
        box-shadow: none;
    }
    .accordion-button:focus {
        box-shadow: none;
        outline: 2px solid var(--accent);
        outline-offset: -2px;
    }
    .accordion-button::after {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230a2a4a'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        transition: transform var(--transition);
    }
    .accordion-body {
        padding: 4px 24px 20px;
        color: var(--text-weak);
        font-size: 0.93rem;
        line-height: 1.75;
        background: #fff;
    }

    /* ===== Contact / CTA ===== */
    .contact-section {
        position: relative;
        padding: 90px 0;
        background: linear-gradient(135deg, rgba(8, 29, 51, 0.94), rgba(10, 42, 74, 0.88)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
        color: #fff;
    }
    .contact-inner {
        max-width: 960px;
        margin: 0 auto;
        text-align: center;
    }
    .contact-inner h2 {
        font-size: clamp(1.7rem, 3vw, 2.4rem);
        font-weight: 800;
        margin-bottom: 14px;
    }
    .contact-inner .contact-lead {
        color: rgba(255, 255, 255, 0.75);
        font-size: 1.05rem;
        margin-bottom: 32px;
        line-height: 1.8;
    }
    .contact-actions {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 14px;
        margin-bottom: 36px;
    }
    .contact-meta {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 26px;
        font-size: 0.92rem;
        color: rgba(255, 255, 255, 0.75);
    }
    .contact-meta i {
        color: var(--accent);
        margin-right: 6px;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--bg-dark);
        color: rgba(255, 255, 255, 0.7);
        padding: 70px 0 30px;
        font-size: 0.92rem;
    }
    .site-footer .footer-brand {
        font-size: 1.2rem;
        font-weight: 700;
        color: #fff;
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 16px;
    }
    .site-footer .footer-brand .brand-icon {
        width: 36px;
        height: 36px;
        border-radius: 10px;
        background: linear-gradient(135deg, var(--accent), var(--primary));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1rem;
        color: #fff;
    }
    .site-footer p {
        font-size: 0.88rem;
        line-height: 1.7;
        margin-bottom: 16px;
    }
    .site-footer h4 {
        color: #fff;
        font-size: 1rem;
        font-weight: 700;
        margin-bottom: 18px;
        position: relative;
        padding-bottom: 10px;
    }
    .site-footer h4::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 0;
        width: 26px;
        height: 3px;
        border-radius: 3px;
        background: var(--accent);
    }
    .footer-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .footer-links a {
        color: rgba(255, 255, 255, 0.65);
        transition: all var(--transition);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .footer-links a:hover {
        color: var(--accent);
        transform: translateX(4px);
    }
    .footer-contact p {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 10px;
    }
    .footer-contact i {
        color: var(--accent);
        width: 18px;
        text-align: center;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        margin-top: 48px;
        padding-top: 22px;
        text-align: center;
        font-size: 0.82rem;
        color: rgba(255, 255, 255, 0.5);
    }
    .footer-bottom p {
        margin-bottom: 0;
    }

    /* ===== Mobile Tabs ===== */
    .mobile-tab-nav {
        display: none;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: #fff;
        border-top: 1px solid var(--border);
        box-shadow: 0 -4px 24px rgba(10, 42, 74, 0.08);
        z-index: 1000;
        padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
        justify-content: space-around;
    }
    .mobile-tab-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 3px;
        padding: 8px 12px;
        border-radius: 12px;
        font-size: 0.72rem;
        color: var(--text-weak);
        transition: all var(--transition);
        min-width: 76px;
    }
    .mobile-tab-item i {
        font-size: 1.2rem;
    }
    .mobile-tab-item:hover {
        color: var(--accent-dark);
        background: var(--accent-light);
    }
    .mobile-tab-item.active {
        color: var(--accent-dark);
        font-weight: 700;
        background: var(--accent-light);
    }
    .mobile-tab-item.active i {
        color: var(--accent);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .kpi-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .kpi-item {
            border-right: none;
            border-bottom: 1px solid var(--border);
            padding: 12px;
        }
        .kpi-item:nth-last-child(-n+2) {
            border-bottom: none;
        }
        .process-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .page-hero {
            padding: 90px 0 80px;
        }
        .section-block,
        .section-block-alt {
            padding: 70px 0;
        }
    }
    @media (max-width: 768px) {
        body {
            font-size: 15px;
        }
        .navbar-inner {
            height: 64px;
        }
        .nav-center {
            display: none;
        }
        .page-hero {
            padding: 70px 0 64px;
        }
        .page-hero h1 {
            font-size: 1.8rem;
        }
        .hero-sub {
            font-size: 0.95rem;
        }
        .hero-actions .btn {
            padding: 10px 22px;
            font-size: 0.9rem;
        }
        .section-block,
        .section-block-alt {
            padding: 56px 0;
        }
        .feature-grid,
        .notice-grid {
            grid-template-columns: 1fr;
        }
        .section-title {
            font-size: 1.55rem;
        }
        .section-desc {
            font-size: 0.92rem;
        }
        .kpi-num {
            font-size: 1.7rem;
        }
        .mobile-tab-nav {
            display: flex;
        }
        body {
            padding-bottom: 64px;
        }
        .site-footer {
            padding-bottom: 80px;
        }
        .contact-meta {
            flex-direction: column;
            gap: 10px;
        }
        .process-grid {
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .process-item {
            padding: 24px 20px;
        }
        .entry-methods .col-md-6 {
            padding: 0 10px;
        }
    }
    @media (max-width: 520px) {
        .container {
            padding-left: 16px;
            padding-right: 16px;
        }
        .navbar-inner {
            gap: 10px;
        }
        .navbar-brand {
            font-size: 0.95rem;
            gap: 8px;
        }
        .navbar-brand .brand-icon {
            width: 34px;
            height: 34px;
            font-size: 0.95rem;
        }
        .nav-cta.btn-small {
            padding: 7px 16px;
            font-size: 0.8rem;
        }
        .page-hero {
            padding: 56px 0 50px;
        }
        .page-hero h1 {
            font-size: 1.55rem;
            letter-spacing: 0.5px;
        }
        .page-hero .hero-sub {
            font-size: 0.9rem;
            margin-bottom: 24px;
        }
        .hero-badges {
            gap: 6px;
        }
        .hero-badge {
            font-size: 0.74rem;
            padding: 4px 10px;
        }
        .kpi-grid {
            grid-template-columns: 1fr;
            padding: 20px;
        }
        .kpi-item {
            border-bottom: 1px solid var(--border);
            padding: 14px 8px;
            border-right: none;
        }
        .kpi-item:last-child {
            border-bottom: none;
        }
        .section-block,
        .section-block-alt,
        .faq-section {
            padding: 48px 0;
        }
        .card-body-wrap {
            padding: 18px;
        }
        .card-img-wrap {
            height: 160px;
        }
        .feature-grid {
            gap: 14px;
        }
        .feature-item {
            padding: 20px;
            flex-direction: column;
            align-items: flex-start;
        }
        .feature-icon {
            width: 44px;
            height: 44px;
            font-size: 1.1rem;
            border-radius: 12px;
        }
        .accordion-button {
            font-size: 0.93rem;
            padding: 16px 18px;
        }
        .accordion-body {
            padding: 0 18px 16px;
            font-size: 0.88rem;
        }
        .contact-section {
            padding: 56px 0;
        }
        .contact-actions .btn {
            width: 100%;
            max-width: 280px;
        }
        .footer-bottom {
            font-size: 0.76rem;
        }
        .mobile-tab-item {
            min-width: 64px;
            padding: 6px 6px;
            font-size: 0.66rem;
        }
        .mobile-tab-item i {
            font-size: 1.05rem;
        }
    }
    @media (min-width: 769px) {
        .mobile-tab-nav {
            display: none;
        }
    }
    @media (min-width: 992px) {
        .nav-center {
            display: flex;
        }
    }

/* roulang page: article */
:root {
            --primary: #0f2b46;
            --primary-2: #0b2238;
            --primary-soft: #eaf1f8;
            --accent: #12a5a0;
            --accent-soft: #e3f5f4;
            --accent-2: #2bb3ae;
            --bg: #f6f8fb;
            --surface: #ffffff;
            --surface-2: #f0f4f9;
            --text: #1b2a38;
            --text-muted: #64727e;
            --border: #e2e8f0;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 10px rgba(15, 43, 70, .05);
            --shadow: 0 10px 35px rgba(15, 43, 70, .09);
            --shadow-lg: 0 22px 55px rgba(15, 43, 70, .13);
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", system-ui, -apple-system, sans-serif;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-family);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            overflow-x: hidden;
            padding-bottom: 68px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: all .25s ease;
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1240px;
        }
        .section-padding {
            padding: 76px 0;
        }
        .bg-surface-soft {
            background: var(--surface-2);
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 46px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: .82rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 100px;
            letter-spacing: .04em;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: clamp(1.6rem, 2.6vw, 2.2rem);
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: .01em;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: .98rem;
            margin-bottom: 0;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            height: 72px;
            display: flex;
            align-items: center;
        }
        .navbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.18rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: .02em;
        }
        .navbar-brand:hover {
            color: var(--primary);
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border-radius: 12px;
            font-size: 1.05rem;
            box-shadow: 0 4px 14px rgba(15, 43, 70, .22);
        }
        .brand-text {
            white-space: nowrap;
        }
        .nav-center {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: 100px;
            font-size: .93rem;
            font-weight: 500;
            color: var(--text);
            transition: all .25s ease;
        }
        .nav-link:hover {
            background: var(--accent-soft);
            color: var(--accent);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(15, 43, 70, .2);
        }
        .nav-cta {
            white-space: nowrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 12px;
            font-weight: 600;
            padding: 11px 24px;
            font-size: .95rem;
            border: 1px solid transparent;
            transition: all .28s ease;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(15, 43, 70, .18);
        }
        .btn-primary:hover {
            background: var(--primary-2);
            color: #fff;
            border-color: var(--primary-2);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(15, 43, 70, .24);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, .7);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .15);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 14px 30px;
            font-size: 1.04rem;
            border-radius: 14px;
        }
        .btn-small {
            padding: 7px 18px;
            font-size: .88rem;
            border-radius: 10px;
        }
        .btn:focus-visible,
        .nav-link:focus-visible {
            outline: 3px solid rgba(18, 165, 160, .35);
            outline-offset: 2px;
        }
        .article-banner {
            background: linear-gradient(120deg, rgba(11, 34, 56, .92), rgba(15, 43, 70, .78)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            padding: 72px 0 54px;
            position: relative;
            border-bottom: 4px solid var(--accent);
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: .88rem;
            color: rgba(255, 255, 255, .78);
            margin-bottom: 28px;
        }
        .breadcrumb-nav a {
            color: rgba(255, 255, 255, .82);
        }
        .breadcrumb-nav a:hover {
            color: #fff;
        }
        .breadcrumb-nav i {
            font-size: .7rem;
            opacity: .6;
        }
        .breadcrumb-nav span {
            color: #fff;
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .article-head {
            max-width: 860px;
        }
        .article-cat {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .16);
            border: 1px solid rgba(255, 255, 255, .26);
            padding: 5px 14px;
            border-radius: 100px;
            font-size: .84rem;
            font-weight: 600;
            margin-bottom: 18px;
            backdrop-filter: blur(6px);
        }
        .article-head h1 {
            font-size: clamp(1.6rem, 3vw, 2.5rem);
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: .01em;
        }
        .article-desc {
            font-size: 1.02rem;
            color: rgba(255, 255, 255, .88);
            max-width: 720px;
            margin-bottom: 20px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: .9rem;
            color: rgba(255, 255, 255, .78);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
            padding: 32px;
            border: 1px solid var(--border);
        }
        .article-cover {
            border-radius: 16px;
            overflow: hidden;
            margin-bottom: 30px;
            position: relative;
        }
        .article-cover img {
            width: 100%;
            display: block;
            transition: transform .5s ease;
        }
        .article-cover:hover img {
            transform: scale(1.015);
        }
        .article-content {
            font-size: 1rem;
            line-height: 1.9;
            color: #2a3644;
        }
        .article-content h1,
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--primary);
            font-weight: 700;
            margin-top: 1.6em;
            margin-bottom: .7em;
            line-height: 1.4;
        }
        .article-content h2 {
            font-size: 1.45rem;
            padding-left: 14px;
            border-left: 4px solid var(--accent);
        }
        .article-content h3 {
            font-size: 1.22rem;
        }
        .article-content p {
            margin-bottom: 1.15em;
        }
        .article-content a {
            color: var(--accent);
            font-weight: 600;
        }
        .article-content a:hover {
            text-decoration: underline;
        }
        .article-content img {
            border-radius: 14px;
            margin: 18px 0;
        }
        .article-content blockquote {
            background: var(--primary-soft);
            border-left: 4px solid var(--primary);
            padding: 16px 22px;
            border-radius: 0 12px 12px 0;
            margin: 20px 0;
            color: var(--text);
        }
        .article-content ul,
        .article-content ol {
            margin: 14px 0;
            padding-left: 24px;
        }
        .article-content li {
            margin-bottom: 6px;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 18px 0;
            font-size: .94rem;
        }
        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-content table th {
            background: var(--surface-2);
            font-weight: 600;
        }
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found-icon {
            width: 84px;
            height: 84px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 2.2rem;
            border-radius: 50%;
            margin-bottom: 22px;
        }
        .not-found-box h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-sidebar .sidebar-widget {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 26px;
            margin-bottom: 22px;
        }
        .sidebar-widget h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--accent-soft);
        }
        .sidebar-widget h3 i {
            color: var(--accent);
        }
        .sidebar-links {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 11px 14px;
            border-radius: 10px;
            background: var(--bg);
            color: var(--text);
            font-size: .94rem;
            font-weight: 500;
            transition: all .25s ease;
            border: 1px solid transparent;
        }
        .sidebar-link i:first-child {
            color: var(--accent);
            width: 20px;
            text-align: center;
        }
        .sidebar-link:hover {
            background: var(--accent-soft);
            border-color: var(--accent);
            color: var(--primary);
            transform: translateX(3px);
        }
        .sidebar-link .link-arrow {
            margin-left: auto;
            opacity: 0;
            transform: translateX(-6px);
            transition: all .25s ease;
        }
        .sidebar-link:hover .link-arrow {
            opacity: 1;
            transform: translateX(0);
        }
        .advantage-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .advantage-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
            color: var(--text);
            font-size: .94rem;
        }
        .advantage-list li i {
            color: var(--accent);
            font-size: 1.1rem;
        }
        .sidebar-cta-widget {
            background: linear-gradient(145deg, var(--primary), var(--primary-2));
            border: none;
            color: #fff;
        }
        .sidebar-cta-widget h3 {
            color: #fff;
            border-bottom-color: rgba(255, 255, 255, .18);
        }
        .sidebar-cta-widget h3 i {
            color: var(--accent-2);
        }
        .sidebar-cta-widget p {
            color: rgba(255, 255, 255, .82);
            font-size: .9rem;
            margin-bottom: 18px;
        }
        .sidebar-cta-widget .btn-primary {
            background: var(--accent);
            border-color: var(--accent);
        }
        .sidebar-cta-widget .btn-primary:hover {
            background: var(--accent-2);
        }
        .category-entry {
            background: var(--surface);
        }
        .category-card {
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--surface);
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: all .3s ease;
            position: relative;
        }
        .category-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: var(--accent);
        }
        .category-card-body {
            padding: 36px 32px;
            position: relative;
        }
        .category-icon {
            width: 56px;
            height: 56px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--accent-soft);
            color: var(--accent);
            border-radius: 16px;
            font-size: 1.5rem;
            margin-bottom: 18px;
            transition: all .3s ease;
        }
        .category-card:hover .category-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(-6deg);
        }
        .category-card-body h3 {
            font-size: 1.28rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .category-card-body p {
            color: var(--text-muted);
            font-size: .93rem;
            margin-bottom: 20px;
        }
        .related-card {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: var(--surface);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            display: block;
            height: 100%;
            transition: all .3s ease;
            position: relative;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: var(--accent);
        }
        .related-card-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 12px;
            gap: 10px;
        }
        .badge-soft {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: .78rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 100px;
            letter-spacing: .02em;
        }
        .related-date {
            font-size: .8rem;
            color: var(--text-muted);
        }
        .related-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--primary);
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card p {
            color: var(--text-muted);
            font-size: .9rem;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-more {
            font-size: .87rem;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .related-more i {
            transition: transform .25s ease;
        }
        .related-card:hover .related-more i {
            transform: translateX(4px);
        }
        .faq-section {
            background: var(--surface-2);
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            margin-bottom: 18px;
            transition: all .25s ease;
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .faq-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow);
        }
        .faq-q {
            font-weight: 700;
            color: var(--primary);
            font-size: 1rem;
            margin-bottom: 8px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .faq-q i {
            color: var(--accent);
            margin-top: 4px;
            font-size: 1.05rem;
        }
        .faq-a {
            color: var(--text-muted);
            font-size: .93rem;
            line-height: 1.7;
            padding-left: 24px;
        }
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -15%;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(18, 165, 160, .35), transparent 65%);
            border-radius: 50%;
        }
        .cta-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 30px;
            position: relative;
            z-index: 1;
        }
        .cta-info h2 {
            color: #fff;
            font-size: clamp(1.4rem, 2.4vw, 2rem);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cta-info p {
            color: rgba(255, 255, 255, .82);
            font-size: .98rem;
            margin-bottom: 0;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .site-footer {
            background: var(--primary-2);
            color: rgba(255, 255, 255, .82);
            padding: 70px 0 30px;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .site-footer .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
            font-size: .95rem;
        }
        .site-footer p {
            font-size: .9rem;
            line-height: 1.8;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .site-footer h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 26px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, .75);
            font-size: .9rem;
        }
        .footer-links a:hover {
            color: var(--accent-2);
            padding-left: 5px;
        }
        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 8px;
            font-size: .9rem;
        }
        .footer-contact i {
            color: var(--accent-2);
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            margin-top: 40px;
            padding-top: 22px;
            text-align: center;
            color: rgba(255, 255, 255, .5);
            font-size: .84rem;
        }
        .bottom-tabbar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            display: flex;
            justify-content: space-around;
            align-items: center;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
            box-shadow: 0 -4px 20px rgba(15, 43, 70, .08);
        }
        .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 6px 12px;
            border-radius: 12px;
            color: var(--text-muted);
            font-size: .72rem;
            font-weight: 500;
            transition: all .25s ease;
            flex: 1;
        }
        .tab-item i {
            font-size: 1.15rem;
            transition: transform .25s ease;
        }
        .tab-item:hover {
            color: var(--accent);
            background: var(--accent-soft);
        }
        .tab-item.active {
            color: var(--accent);
            font-weight: 600;
        }
        .tab-item.active i {
            transform: translateY(-2px);
        }
        @media (min-width: 992px) {
            .bottom-tabbar {
                display: none;
            }
            body {
                padding-bottom: 0;
            }
        }
        @media (max-width: 991.98px) {
            .nav-center {
                display: none;
            }
            .nav-cta {
                margin-left: auto;
            }
        }
        @media (max-width: 767.98px) {
            .section-padding {
                padding: 56px 0;
            }
            .site-header {
                height: 62px;
            }
            .navbar-brand {
                font-size: 1rem;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: .9rem;
            }
            .nav-cta {
                padding: 6px 14px;
                font-size: .82rem;
            }
            .article-banner {
                padding: 48px 0 38px;
            }
            .article-head h1 {
                font-size: 1.4rem;
            }
            .article-meta {
                gap: 12px;
                font-size: .82rem;
            }
            .article-card {
                padding: 20px;
            }
            .cta-box {
                flex-direction: column;
                text-align: center;
            }
            .cta-actions {
                justify-content: center;
                width: 100%;
            }
            .cta-actions .btn {
                flex: 1;
                min-width: 150px;
            }
            .category-card-body {
                padding: 26px 22px;
            }
            .faq-item {
                padding: 18px;
            }
            .section-head {
                margin-bottom: 34px;
            }
        }
        @media (max-width: 575.98px) {
            .navbar-brand .brand-text {
                max-width: 220px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .article-card {
                padding: 16px;
                border-radius: 16px;
            }
            .sidebar-widget {
                padding: 20px;
            }
            .related-card {
                padding: 20px;
            }
        }
        @media (max-width: 520px) {
            .article-head h1 {
                font-size: 1.28rem;
            }
            .article-desc {
                font-size: .92rem;
            }
            .breadcrumb-nav span {
                max-width: 180px;
            }
            .category-card-body h3 {
                font-size: 1.1rem;
            }
        }

/* roulang page: category2 */
:root{
  --primary:#0f6bff;
  --primary-dark:#084fd0;
  --primary-light:#e8f0ff;
  --accent:#00b8a9;
  --accent-light:#e0f7f4;
  --bg:#f6f8fb;
  --bg-dark:#0b1526;
  --surface:#ffffff;
  --text:#1a2434;
  --text-weak:#66788f;
  --border:#e4eaf2;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(15,30,60,.08);
  --shadow-lg:0 20px 50px rgba(15,30,60,.14);
  --space:24px;
  --transition:all .25s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding:0 0 70px;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{text-decoration:none;color:inherit;transition:var(--transition)}
a:hover{color:var(--primary)}
button{transition:var(--transition)}
.container{max-width:1200px}
.container,.container-fluid,.container-lg,.container-md,.container-sm,.container-xl,.container-xxl{padding-left:20px;padding-right:20px}
.section{padding:80px 0}
.section-head{margin-bottom:40px}
.section-head .tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--primary-light);
  color:var(--primary);
  font-size:13px;
  font-weight:600;
  padding:6px 16px;
  border-radius:100px;
  margin-bottom:14px;
}
.section-head h2{
  font-size:32px;
  font-weight:700;
  color:var(--text);
  margin:0 0 10px;
  letter-spacing:-.5px;
}
.section-head p{
  font-size:16px;
  color:var(--text-weak);
  margin:0;
  max-width:680px;
}
.section-title{
  font-size:28px;
  font-weight:700;
  margin:0 0 8px;
  letter-spacing:-.5px;
}
.section-sub{ color:var(--text-weak); font-size:15px; margin-bottom:32px }

/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:1050;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.navbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  gap:20px;
}
.navbar-brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:20px;
  font-weight:700;
  color:var(--text);
  letter-spacing:-.3px;
}
.navbar-brand:hover{color:var(--primary)}
.brand-icon{
  width:42px;
  height:42px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  border-radius:12px;
  color:#fff;
  font-size:18px;
  box-shadow:0 4px 12px rgba(15,107,255,.25);
}
.brand-text{
  white-space:nowrap;
  font-size:19px;
}
.nav-center{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-center .nav-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:10px 18px;
  border-radius:100px;
  font-size:15px;
  font-weight:500;
  color:var(--text-weak);
}
.nav-center .nav-link:hover{
  color:var(--primary);
  background:var(--primary-light);
}
.nav-center .nav-link.active{
  color:var(--primary);
  background:var(--primary-light);
  font-weight:600;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:100px;
  font-weight:600;
  border:0;
  line-height:1.4;
  transition:var(--transition);
}
.btn-primary{
  background:var(--primary);
  color:#fff;
}
.btn-primary:hover,.btn-primary:focus{
  background:var(--primary-dark);
  color:#fff;
  box-shadow:0 8px 24px rgba(15,107,255,.28);
  transform:translateY(-2px);
}
.btn-outline{
  background:transparent;
  border:1px solid var(--border);
  color:var(--text);
}
.btn-outline:hover{
  border-color:var(--primary);
  color:var(--primary);
  background:var(--primary-light);
}
.btn-small{padding:9px 20px;font-size:14px}
.btn-medium{padding:12px 28px;font-size:15px}
.btn-large{padding:15px 38px;font-size:16px}
.nav-cta{white-space:nowrap}

/* ===== Mobile Tabbar ===== */
.mobile-tabbar{
  position:fixed;
  bottom:0;
  left:0;
  right:0;
  z-index:1060;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--border);
  display:none;
  padding:6px 10px calc(6px + env(safe-area-inset-bottom));
  justify-content:space-around;
}
.mobile-tabbar .tab-item{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:4px;
  padding:6px 12px;
  border-radius:12px;
  font-size:12px;
  color:var(--text-weak);
  min-width:72px;
  transition:var(--transition);
}
.mobile-tabbar .tab-item i{font-size:19px}
.mobile-tabbar .tab-item.active{
  color:var(--primary);
  background:var(--primary-light);
  font-weight:600;
}

/* ===== Hero / Banner ===== */
.category-banner{
  background:linear-gradient(135deg,rgba(11,21,38,.82),rgba(15,107,255,.68)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:100px 0 90px;
  color:#fff;
  position:relative;
  overflow:hidden;
}
.category-banner::after{
  content:"";
  position:absolute;
  right:-80px;
  top:-80px;
  width:320px;
  height:320px;
  background:rgba(255,255,255,.08);
  border-radius:50%;
}
.category-banner .breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.75);
  margin-bottom:20px;
  background:rgba(255,255,255,.1);
  display:inline-flex;
  padding:8px 18px;
  border-radius:100px;
}
.category-banner .breadcrumb a{color:rgba(255,255,255,.9)}
.category-banner .breadcrumb a:hover{color:#fff}
.category-banner h1{
  font-size:46px;
  font-weight:800;
  letter-spacing:-1px;
  margin:0 0 16px;
  line-height:1.2;
}
.category-banner .lead{
  font-size:18px;
  max-width:640px;
  color:rgba(255,255,255,.88);
  margin-bottom:32px;
}
.banner-stats{
  display:flex;
  flex-wrap:wrap;
  gap:36px;
  margin-top:40px;
}
.banner-stats .stat-item{
  border-left:2px solid rgba(255,255,255,.25);
  padding-left:18px;
}
.banner-stats .stat-num{
  font-size:32px;
  font-weight:800;
  line-height:1.2;
  display:block;
}
.banner-stats .stat-label{
  font-size:13px;
  color:rgba(255,255,255,.7);
}

/* ===== Tag filter ===== */
.topic-filter{
  margin-top:-44px;
  position:relative;
  z-index:2;
}
.topic-filter .filter-card{
  background:var(--surface);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:24px 28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
}
.filter-card .filter-label{
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin-right:6px;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.filter-card .filter-label i{color:var(--primary)}
.filter-chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 18px;
  border-radius:100px;
  border:1px solid var(--border);
  background:#fafbfd;
  font-size:14px;
  color:var(--text-weak);
  cursor:pointer;
  transition:var(--transition);
}
.filter-chip:hover{
  border-color:var(--primary);
  color:var(--primary);
  background:var(--primary-light);
}
.filter-chip.active{
  background:var(--primary);
  border-color:var(--primary);
  color:#fff;
  box-shadow:0 4px 14px rgba(15,107,255,.25);
}

/* ===== Cards ===== */
.content-card{
  background:var(--surface);
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--border);
  box-shadow:var(--shadow);
  transition:var(--transition);
  height:100%;
  display:flex;
  flex-direction:column;
}
.content-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
}
.content-card .card-img-wrap{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/10;
  background:var(--primary-light);
}
.content-card .card-img-wrap img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.content-card:hover .card-img-wrap img{transform:scale(1.05)}
.card-badge{
  position:absolute;
  top:14px;
  left:14px;
  z-index:2;
  background:rgba(11,21,38,.78);
  backdrop-filter:blur(6px);
  color:#fff;
  font-size:12px;
  font-weight:600;
  padding:5px 14px;
  border-radius:100px;
}
.card-badge.hot{
  background:linear-gradient(135deg,#ff6b6b,#ff9f43);
}
.card-body-item{
  padding:22px 24px 24px;
  flex:1;
  display:flex;
  flex-direction:column;
}
.card-body-item h3{
  font-size:18px;
  font-weight:700;
  line-height:1.45;
  margin:0 0 10px;
}
.card-body-item h3 a{color:var(--text)}
.card-body-item h3 a:hover{color:var(--primary)}
.card-meta{
  display:flex;
  align-items:center;
  gap:16px;
  font-size:13px;
  color:var(--text-weak);
  margin-bottom:12px;
}
.card-meta span{display:inline-flex;align-items:center;gap:6px}
.card-desc{
  font-size:14px;
  color:var(--text-weak);
  margin:0 0 18px;
  line-height:1.65;
  flex:1;
}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
}
.card-link i{transition:transform .25s ease}
.card-link:hover i{transform:translateX(4px)}

/* ===== Ranking ===== */
.rank-section{
  background:var(--bg-dark);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.rank-section .section-head h2{color:#fff}
.rank-section .section-head p{color:rgba(255,255,255,.65)}
.rank-section .section-head .tag{background:rgba(255,255,255,.14);color:#fff}
.rank-list{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.rank-item{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);
  border-radius:14px;
  padding:18px 22px;
  display:flex;
  align-items:center;
  gap:18px;
  transition:var(--transition);
  cursor:pointer;
}
.rank-item:hover{
  background:rgba(255,255,255,.1);
  transform:translateX(6px);
}
.rank-num{
  font-size:26px;
  font-weight:800;
  color:var(--accent);
  min-width:46px;
  text-align:center;
  font-style:italic;
}
.rank-item:nth-child(1) .rank-num{color:#ffd166}
.rank-item:nth-child(2) .rank-num{color:#b8c0ff}
.rank-item:nth-child(3) .rank-num{color:#ff9f43}
.rank-info{flex:1}
.rank-info h4{
  font-size:16px;
  font-weight:600;
  margin:0 0 4px;
  color:#fff;
}
.rank-info p{
  font-size:13px;
  color:rgba(255,255,255,.6);
  margin:0;
}
.rank-tag{
  font-size:12px;
  background:rgba(255,255,255,.12);
  padding:4px 14px;
  border-radius:100px;
  color:rgba(255,255,255,.85);
  white-space:nowrap;
}

/* ===== Guide split ===== */
.guide-split{
  background:var(--surface);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.guide-split .guide-img{
  width:100%;
  height:100%;
  min-height:320px;
  object-fit:cover;
}
.guide-content{
  padding:40px 40px;
}
.guide-content h3{
  font-size:26px;
  font-weight:700;
  margin:0 0 18px;
  letter-spacing:-.5px;
}
.guide-steps{
  display:flex;
  flex-direction:column;
  gap:18px;
  margin-top:24px;
}
.guide-step{
  display:flex;
  gap:16px;
  align-items:flex-start;
}
.guide-step .step-icon{
  width:44px;
  height:44px;
  flex-shrink:0;
  border-radius:12px;
  background:var(--primary-light);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
}
.guide-step h5{
  font-size:15px;
  font-weight:700;
  margin:0 0 4px;
}
.guide-step p{
  font-size:14px;
  color:var(--text-weak);
  margin:0;
}
.guide-note{
  background:var(--accent-light);
  border-radius:12px;
  padding:16px 20px;
  font-size:14px;
  color:#0a7b72;
  display:flex;
  gap:12px;
  align-items:flex-start;
  margin-top:28px;
}
.guide-note i{margin-top:3px}

/* ===== FAQ ===== */
.faq-item{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:14px;
  margin-bottom:14px;
  overflow:hidden;
  transition:var(--transition);
}
.faq-item:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.faq-q{
  padding:20px 24px;
  font-size:16px;
  font-weight:600;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  background:var(--surface);
  border:0;
  width:100%;
  text-align:left;
  color:var(--text);
}
.faq-q .faq-icon{
  width:30px;
  height:30px;
  border-radius:50%;
  background:var(--primary-light);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  transition:var(--transition);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff}
.faq-a{
  padding:0 24px;
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 0 22px;
  margin:0;
  font-size:15px;
  color:var(--text-weak);
  line-height:1.7;
  border-top:1px solid var(--border);
  padding-top:16px;
}

/* ===== CTA ===== */
.cta-box{
  position:relative;
  background:linear-gradient(135deg,var(--primary),#0a4fd0 60%,var(--accent));
  border-radius:24px;
  padding:60px 50px;
  text-align:center;
  overflow:hidden;
  box-shadow:0 24px 60px rgba(15,107,255,.3);
}
.cta-box::before{
  content:"";
  position:absolute;
  right:-60px;
  top:-60px;
  width:240px;
  height:240px;
  border-radius:50%;
  background:rgba(255,255,255,.12);
}
.cta-box::after{
  content:"";
  position:absolute;
  left:-40px;
  bottom:-80px;
  width:200px;
  height:200px;
  border-radius:50%;
  background:rgba(255,255,255,.07);
}
.cta-box h2{
  font-size:34px;
  font-weight:800;
  color:#fff;
  margin:0 0 12px;
  position:relative;
  z-index:1;
  letter-spacing:-.5px;
}
.cta-box p{
  color:rgba(255,255,255,.85);
  font-size:17px;
  margin:0 auto 30px;
  max-width:520px;
  position:relative;
  z-index:1;
}
.cta-box .btn-white{
  background:#fff;
  color:var(--primary);
  padding:15px 42px;
  font-size:16px;
  font-weight:700;
  border-radius:100px;
  position:relative;
  z-index:1;
  transition:var(--transition);
}
.cta-box .btn-white:hover{
  transform:translateY(-3px);
  box-shadow:0 12px 30px rgba(0,0,0,.2);
  color:var(--primary-dark);
}

/* ===== Footer ===== */
.site-footer{
  background:var(--bg-dark);
  color:rgba(255,255,255,.7);
  padding:70px 0 30px;
  margin-top:80px;
}
.site-footer .footer-brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:20px;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
}
.site-footer .footer-brand .brand-icon{
  width:40px;
  height:40px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  border-radius:10px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:16px;
}
.site-footer p{
  font-size:14px;
  line-height:1.7;
  margin-bottom:10px;
}
.site-footer h4{
  color:#fff;
  font-size:16px;
  font-weight:600;
  margin:0 0 16px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  color:rgba(255,255,255,.7);
  font-size:14px;
  transition:var(--transition);
}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-contact p{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  margin-bottom:10px;
}
.footer-contact i{color:var(--accent);width:18px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  margin-top:44px;
  padding-top:24px;
  text-align:center;
  font-size:13px;
  color:rgba(255,255,255,.45);
}
.footer-bottom p{margin:0}

/* ===== Utility ===== */
.mb-4{margin-bottom:18px}
.mb-5{margin-bottom:30px}
.gap-lg{gap:24px}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .section{padding:64px 0}
  .category-banner{padding:80px 0 70px}
  .category-banner h1{font-size:38px}
  .guide-content{padding:32px 28px}
}
@media (max-width:768px){
  body{padding-bottom:70px}
  .section{padding:52px 0}
  .navbar-inner{height:64px}
  .nav-center{display:none}
  .nav-cta{display:none}
  .mobile-tabbar{display:flex}
  .brand-text{font-size:17px}
  .brand-icon{width:38px;height:38px;font-size:16px}
  .category-banner{padding:64px 0 60px}
  .category-banner h1{font-size:32px}
  .category-banner .lead{font-size:16px}
  .banner-stats{gap:20px;margin-top:30px}
  .banner-stats .stat-num{font-size:24px}
  .topic-filter{margin-top:-30px}
  .topic-filter .filter-card{padding:18px}
  .content-card .card-body-item{padding:18px 18px 20px}
  .rank-item{padding:16px;gap:12px}
  .rank-num{font-size:20px;min-width:36px}
  .rank-info h4{font-size:15px}
  .rank-tag{display:none}
  .guide-split .guide-img{min-height:240px;max-height:300px}
  .guide-step{flex-direction:column;gap:8px}
  .cta-box{padding:40px 24px}
  .cta-box h2{font-size:26px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a{padding:0 18px}
  .site-footer{padding:50px 0 24px}
}
@media (max-width:520px){
  .category-banner h1{font-size:28px}
  .section-head h2{font-size:24px}
  .section-title{font-size:22px}
  .filter-chip{padding:7px 14px;font-size:13px}
  .banner-stats .stat-num{font-size:20px}
  .banner-stats .stat-label{font-size:12px}
  .content-card .card-body-item h3{font-size:16px}
  .cta-box p{font-size:15px}
  .footer-contact p{font-size:13px}
}