/* roulang page: index */
/* ===== Design Variables ===== */
    :root {
        --primary: #1a6b3c;
        --primary-light: #2d8a4e;
        --primary-dark: #0d4d2a;
        --primary-alpha: rgba(26, 107, 60, 0.08);
        --accent: #e8a838;
        --accent-light: #f0c060;
        --accent-dark: #c88a1e;
        --bg: #ffffff;
        --bg-alt: #f4f8f5;
        --bg-card: #ffffff;
        --text: #1a1a2e;
        --text-light: #6b7280;
        --text-white: #ffffff;
        --border: #e5e7eb;
        --border-light: #f0f2f0;
        --radius-sm: 8px;
        --radius: 12px;
        --radius-lg: 20px;
        --shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
        --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.12);
        --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.10);
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        --max-width: 1200px;
        --nav-height: 72px;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
    body {
        font-family: var(--font);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text);
        background: var(--bg);
        padding-top: var(--nav-height);
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    button { cursor: pointer; font-family: inherit; border: none; background: none; }
    input, textarea { font-family: inherit; outline: none; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
    h1 { font-size: 2.8rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.35rem; }
    h4 { font-size: 1.1rem; }
    p { margin-bottom: 0.5rem; color: var(--text-light); }
    .container {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== Header & Navigation ===== */
    .header {
        position: fixed;
        top: 0; left: 0; right: 0;
        height: var(--nav-height);
        background: rgba(255, 255, 255, 0.97);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
        z-index: 1000;
        transition: var(--transition);
    }
    .header.scrolled { box-shadow: var(--shadow); }
    .header-inner {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.5rem;
        font-weight: 800;
        color: var(--primary);
        letter-spacing: -0.5px;
    }
    .logo i { font-size: 1.8rem; color: var(--accent); }
    .logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .nav { display: flex; align-items: center; gap: 8px; }
    .nav a {
        padding: 8px 20px;
        border-radius: var(--radius-sm);
        font-size: 0.95rem;
        font-weight: 500;
        color: var(--text);
        transition: var(--transition);
        position: relative;
    }
    .nav a:hover { background: var(--primary-alpha); color: var(--primary); }
    .nav a.active {
        background: var(--primary);
        color: var(--text-white);
        box-shadow: 0 4px 12px rgba(26, 107, 60, 0.3);
    }
    .nav a.nav-cta {
        background: var(--accent);
        color: var(--text);
        padding: 8px 24px;
        border-radius: 50px;
        font-weight: 600;
        box-shadow: 0 4px 14px rgba(232, 168, 56, 0.35);
    }
    .nav a.nav-cta:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(232, 168, 56, 0.45); }
    .menu-toggle { display: none; font-size: 1.6rem; color: var(--text); padding: 8px; border-radius: var(--radius-sm); }

    /* ===== Hero ===== */
    .hero {
        position: relative;
        min-height: 520px;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        background: linear-gradient(135deg, rgba(13, 77, 42, 0.88), rgba(26, 107, 60, 0.78)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        color: var(--text-white);
        padding: 80px 24px;
        overflow: hidden;
    }
    .hero::after {
        content: '';
        position: absolute;
        bottom: 0; left: 0; right: 0;
        height: 120px;
        background: linear-gradient(to top, var(--bg), transparent);
    }
    .hero-content { position: relative; z-index: 2; max-width: 800px; }
    .hero h1 { color: var(--text-white); font-size: 3.2rem; margin-bottom: 16px; letter-spacing: -1px; }
    .hero h1 i { color: var(--accent); }
    .hero p { color: rgba(255, 255, 255, 0.9); font-size: 1.2rem; max-width: 600px; margin: 0 auto 32px; line-height: 1.8; }
    .hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
    .btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 36px; border-radius: 50px; font-size: 1rem; font-weight: 600; transition: var(--transition); border: 2px solid transparent; }
    .btn-primary { background: var(--accent); color: var(--text); box-shadow: 0 6px 24px rgba(232, 168, 56, 0.4); }
    .btn-primary:hover { background: var(--accent-light); transform: translateY(-3px); box-shadow: 0 10px 32px rgba(232, 168, 56, 0.5); }
    .btn-outline { background: transparent; color: var(--text-white); border-color: rgba(255, 255, 255, 0.6); }
    .btn-outline:hover { background: rgba(255, 255, 255, 0.12); border-color: var(--text-white); transform: translateY(-3px); }

    /* ===== Section Shared ===== */
    .section { padding: 80px 0; }
    .section-alt { background: var(--bg-alt); }
    .section-header { text-align: center; max-width: 700px; margin: 0 auto 56px; }
    .section-header h2 { margin-bottom: 12px; }
    .section-header h2 i { color: var(--primary); margin-right: 8px; }
    .section-header p { font-size: 1.1rem; }
    .section-tag {
        display: inline-block;
        background: var(--primary-alpha);
        color: var(--primary);
        font-size: 0.85rem;
        font-weight: 600;
        padding: 4px 16px;
        border-radius: 50px;
        margin-bottom: 12px;
        letter-spacing: 0.5px;
    }

    /* ===== Cards Grid ===== */
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
    .card {
        background: var(--bg-card);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        overflow: hidden;
        transition: var(--transition);
        border: 1px solid var(--border-light);
    }
    .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
    .card-img { width: 100%; height: 200px; object-fit: cover; }
    .card-body { padding: 24px; }
    .card-body h3 { margin-bottom: 8px; font-size: 1.2rem; }
    .card-body h3 a { color: var(--text); }
    .card-body h3 a:hover { color: var(--primary); }
    .card-body p { font-size: 0.95rem; margin-bottom: 16px; }
    .card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.85rem; color: var(--text-light); }
    .card-meta .tag {
        background: var(--primary-alpha);
        color: var(--primary);
        padding: 2px 12px;
        border-radius: 50px;
        font-size: 0.8rem;
        font-weight: 500;
    }
    .card-link { display: inline-flex; align-items: center; gap: 6px; color: var(--primary); font-weight: 600; font-size: 0.95rem; }
    .card-link:hover { gap: 12px; }

    /* ===== Features / Icon Cards ===== */
    .feature-card { text-align: center; padding: 36px 24px; }
    .feature-card .icon-wrap {
        width: 64px; height: 64px;
        margin: 0 auto 20px;
        background: var(--primary-alpha);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.8rem;
        color: var(--primary);
        transition: var(--transition);
    }
    .feature-card:hover .icon-wrap { background: var(--primary); color: var(--text-white); transform: scale(1.08); }
    .feature-card h3 { margin-bottom: 8px; }
    .feature-card p { font-size: 0.95rem; }

    /* ===== Stats / Data ===== */
    .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);
        box-shadow: var(--shadow);
        border: 1px solid var(--border-light);
    }
    .stat-card .num { font-size: 2.8rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
    .stat-card .label { font-size: 0.95rem; color: var(--text-light); margin-top: 4px; }

    /* ===== Steps / Process ===== */
    .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; counter-reset: step; }
    .step-card {
        text-align: center;
        padding: 36px 24px;
        background: var(--bg-card);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        border: 1px solid var(--border-light);
        position: relative;
        counter-increment: step;
    }
    .step-card::before {
        content: counter(step);
        position: absolute;
        top: -16px; left: 50%;
        transform: translateX(-50%);
        width: 40px; height: 40px;
        background: var(--primary);
        color: var(--text-white);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 1.1rem;
        box-shadow: 0 4px 12px rgba(26,107,60,0.3);
    }
    .step-card .icon-wrap { font-size: 2rem; color: var(--primary); margin-bottom: 16px; margin-top: 8px; }
    .step-card h3 { margin-bottom: 8px; }
    .step-card p { font-size: 0.95rem; }

    /* ===== FAQ ===== */
    .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
    .faq-item {
        background: var(--bg-card);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        border: 1px solid var(--border-light);
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover { box-shadow: var(--shadow-hover); }
    .faq-q {
        padding: 20px 24px;
        font-weight: 600;
        font-size: 1.05rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
        cursor: pointer;
        color: var(--text);
        background: none;
        width: 100%;
        text-align: left;
        gap: 16px;
    }
    .faq-q i { color: var(--primary); transition: var(--transition); font-size: 1.2rem; }
    .faq-q.open i { transform: rotate(180deg); }
    .faq-a {
        padding: 0 24px 20px;
        color: var(--text-light);
        line-height: 1.8;
        display: none;
    }
    .faq-a.open { display: block; }

    /* ===== CTA ===== */
    .cta {
        background: linear-gradient(135deg, var(--primary-dark), var(--primary));
        color: var(--text-white);
        text-align: center;
        padding: 80px 24px;
        border-radius: var(--radius-lg);
        margin: 0 24px;
    }
    .cta h2 { color: var(--text-white); margin-bottom: 12px; font-size: 2.2rem; }
    .cta p { color: rgba(255, 255, 255, 0.85); font-size: 1.1rem; max-width: 600px; margin: 0 auto 32px; }
    .cta .btn-primary { background: var(--accent); color: var(--text); }
    .cta .btn-primary:hover { background: var(--accent-light); }

    /* ===== Footer ===== */
    .footer {
        background: var(--text);
        color: rgba(255, 255, 255, 0.7);
        padding: 48px 24px 32px;
        margin-top: 80px;
    }
    .footer-inner { max-width: var(--max-width); margin: 0 auto; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
    .footer-brand .logo { color: var(--text-white); margin-bottom: 12px; }
    .footer-brand .logo span { -webkit-text-fill-color: var(--text-white); background: none; }
    .footer-brand p { font-size: 0.95rem; max-width: 320px; color: rgba(255,255,255,0.6); }
    .footer h4 { color: var(--text-white); margin-bottom: 16px; font-size: 1rem; }
    .footer ul li { margin-bottom: 8px; }
    .footer ul li a { color: rgba(255,255,255,0.6); font-size: 0.95rem; }
    .footer ul li a:hover { color: var(--accent); }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.1);
        padding-top: 24px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 0.9rem;
        color: rgba(255,255,255,0.5);
    }
    .footer-bottom a { color: rgba(255,255,255,0.5); }
    .footer-bottom a:hover { color: var(--accent); }

    /* ===== Article List (CMS) ===== */
    .article-list { display: grid; grid-template-columns: 1fr; gap: 20px; }
    .article-item {
        display: flex;
        gap: 24px;
        background: var(--bg-card);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        padding: 20px 24px;
        border: 1px solid var(--border-light);
        transition: var(--transition);
        align-items: flex-start;
    }
    .article-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
    .article-item .art-thumb { width: 160px; height: 120px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; }
    .article-item .art-info { flex: 1; }
    .article-item .art-info h3 { font-size: 1.15rem; margin-bottom: 6px; }
    .article-item .art-info h3 a { color: var(--text); }
    .article-item .art-info h3 a:hover { color: var(--primary); }
    .article-item .art-info p { font-size: 0.95rem; margin-bottom: 10px; }
    .article-item .art-meta { display: flex; align-items: center; gap: 16px; font-size: 0.85rem; color: var(--text-light); }
    .article-item .art-meta .tag { background: var(--primary-alpha); color: var(--primary); padding: 2px 12px; border-radius: 50px; font-weight: 500; }
    .empty-msg { text-align: center; padding: 48px 24px; color: var(--text-light); font-size: 1.1rem; background: var(--bg-alt); border-radius: var(--radius); }

    /* ===== Breadcrumb ===== */
    .breadcrumb { padding: 16px 0; font-size: 0.9rem; color: var(--text-light); }
    .breadcrumb a { color: var(--text-light); }
    .breadcrumb a:hover { color: var(--primary); }
    .breadcrumb span { color: var(--text); font-weight: 500; }
    .breadcrumb i { margin: 0 8px; font-size: 0.7rem; color: var(--text-light); }

    /* ===== Page Banner ===== */
    .page-banner {
        padding: 60px 24px;
        background: linear-gradient(135deg, rgba(13,77,42,0.9), rgba(26,107,60,0.7)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        color: var(--text-white);
        text-align: center;
    }
    .page-banner h1 { color: var(--text-white); font-size: 2.6rem; margin-bottom: 12px; }
    .page-banner p { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

    /* ===== Category Grid ===== */
    .cat-card {
        position: relative;
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: var(--transition);
        cursor: pointer;
        aspect-ratio: 4 / 3;
    }
    .cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
    .cat-card img { width: 100%; height: 100%; object-fit: cover; }
    .cat-card .overlay {
        position: absolute;
        bottom: 0; left: 0; right: 0;
        background: linear-gradient(to top, rgba(0,0,0,0.75), transparent);
        padding: 24px 20px 20px;
        color: var(--text-white);
    }
    .cat-card .overlay h3 { color: var(--text-white); font-size: 1.3rem; margin-bottom: 4px; }
    .cat-card .overlay p { color: rgba(255,255,255,0.8); font-size: 0.9rem; }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .grid-3 { grid-template-columns: repeat(2, 1fr); }
        .stats-grid { grid-template-columns: repeat(2, 1fr); }
        .steps { grid-template-columns: repeat(2, 1fr); }
        .footer-grid { grid-template-columns: 1fr 1fr; }
        h1 { font-size: 2.2rem; }
        .hero h1 { font-size: 2.6rem; }
    }
    @media (max-width: 768px) {
        .nav { display: none; }
        .nav.open { display: flex; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: rgba(255,255,255,0.98); padding: 16px 24px 24px; box-shadow: var(--shadow-lg); gap: 4px; border-bottom: 1px solid var(--border); }
        .nav.open a { width: 100%; padding: 12px 16px; }
        .menu-toggle { display: block; }
        .hero { min-height: 400px; padding: 60px 24px; }
        .hero h1 { font-size: 2rem; }
        .hero p { font-size: 1rem; }
        .grid-3, .grid-2 { grid-template-columns: 1fr; }
        .steps { grid-template-columns: 1fr; }
        .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
        .stat-card .num { font-size: 2rem; }
        .article-item { flex-direction: column; }
        .article-item .art-thumb { width: 100%; height: 180px; }
        .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        .footer-bottom { flex-direction: column; text-align: center; }
        .cta { padding: 60px 20px; margin: 0 12px; }
        .cta h2 { font-size: 1.6rem; }
        .section { padding: 56px 0; }
        .section-header { margin-bottom: 36px; }
        .page-banner h1 { font-size: 1.8rem; }
        .page-banner { padding: 40px 20px; }
        .cat-card { aspect-ratio: 3 / 2; }
    }
    @media (max-width: 520px) {
        .hero h1 { font-size: 1.6rem; }
        .btn { padding: 12px 24px; font-size: 0.9rem; }
        .hero-btns { flex-direction: column; align-items: center; }
        .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
        .stat-card { padding: 20px 12px; }
        .stat-card .num { font-size: 1.6rem; }
        .article-item .art-thumb { height: 140px; }
        .container { padding: 0 16px; }
        .header-inner { padding: 0 16px; }
    }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e53935;
            --primary-dark: #c62828;
            --primary-light: #ffebee;
            --secondary: #1e88e5;
            --secondary-dark: #1565c0;
            --accent: #ff8f00;
            --bg: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-white: #ffffff;
            --border: #e5e7eb;
            --border-light: #f0f0f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.14);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --nav-height: 70px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Container ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }

        .header.scrolled {
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
        }

        .header-inner {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
        }

        .logo i {
            color: var(--primary);
            font-size: 26px;
        }

        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
            position: relative;
        }

        .nav a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav a.active {
            background: var(--primary);
            color: var(--text-white);
        }

        .nav a.active:hover {
            background: var(--primary-dark);
        }

        .nav .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: var(--text-white) !important;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(229, 57, 53, 0.35);
            background: linear-gradient(135deg, var(--primary-dark), var(--accent));
        }

        .nav-toggle {
            display: none;
            background: none;
            font-size: 24px;
            color: var(--text);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: var(--border-light);
        }

        /* ===== Banner / Hero (分类页) ===== */
        .category-banner {
            margin-top: var(--nav-height);
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #16213e 100%);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.92) 0%, rgba(22, 33, 62, 0.85) 100%);
            z-index: 1;
        }

        .category-banner .container {
            position: relative;
            z-index: 2;
        }

        .category-banner h1 {
            font-size: 42px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .category-banner h1 i {
            color: var(--accent);
            margin-right: 10px;
        }

        .category-banner p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 720px;
            line-height: 1.8;
        }

        .category-banner .breadcrumb {
            display: flex;
            gap: 8px;
            align-items: center;
            margin-bottom: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

        .category-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }
        .category-banner .breadcrumb a:hover {
            color: var(--accent);
        }
        .category-banner .breadcrumb span {
            color: var(--accent);
        }

        /* ===== Section Common ===== */
        .section {
            padding: 70px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }

        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin: 12px auto 0;
        }

        .section-title p {
            color: var(--text-light);
            font-size: 17px;
            max-width: 600px;
            margin: 12px auto 0;
        }

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

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

        /* ===== Category Intro ===== */
        .category-intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .category-intro-text h3 {
            font-size: 26px;
            margin-bottom: 16px;
            color: var(--text);
        }

        .category-intro-text p {
            color: var(--text-light);
            margin-bottom: 14px;
            font-size: 16px;
            line-height: 1.8;
        }

        .category-intro-text .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        .category-intro-text .tag-list span {
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
        }

        .category-intro-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            position: relative;
        }

        .category-intro-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .category-intro-image:hover img {
            transform: scale(1.03);
        }

        /* ===== Race Type Cards ===== */
        .race-types-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .race-type-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 32px 26px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
        }

        .race-type-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }

        .race-type-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            margin: 0 auto 18px;
            transition: all var(--transition);
        }

        .race-type-card:hover .icon {
            background: var(--primary);
            color: var(--text-white);
            transform: scale(1.1);
        }

        .race-type-card h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .race-type-card p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.7;
        }

        .race-type-card .badge {
            display: inline-block;
            margin-top: 14px;
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 3px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
        }

        /* ===== Race News / List ===== */
        .race-news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

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

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

        .race-news-card .news-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }

        .race-news-card .news-body {
            padding: 22px 24px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .race-news-card .news-meta {
            display: flex;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 10px;
        }

        .race-news-card .news-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .race-news-card .news-meta .tag {
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 1px 12px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
        }

        .race-news-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .race-news-card h3 a {
            color: var(--text);
        }
        .race-news-card h3 a:hover {
            color: var(--primary);
        }

        .race-news-card p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
        }

        .race-news-card .read-more {
            margin-top: 14px;
            font-weight: 600;
            color: var(--primary);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .race-news-card .read-more:hover {
            gap: 10px;
        }

        /* ===== Race Process / Steps ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .process-step {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 32px 22px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition);
        }

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

        .process-step::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            font-weight: 800;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(229, 57, 53, 0.3);
        }

        .process-step .step-icon {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 16px;
            margin-top: 6px;
        }

        .process-step h4 {
            font-size: 17px;
            margin-bottom: 8px;
        }

        .process-step p {
            color: var(--text-light);
            font-size: 13px;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary-light);
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text);
            background: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }

        .faq-question:hover {
            background: var(--primary-light);
        }

        .faq-question i {
            transition: transform var(--transition);
            color: var(--text-light);
            font-size: 14px;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.8;
            display: none;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #16213e 100%);
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }

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

        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 14px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 17px;
            max-width: 600px;
            margin: 0 auto 30px;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 40px;
            border-radius: 50px;
            font-size: 17px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: var(--text-white);
            transition: all var(--transition);
            box-shadow: 0 8px 30px rgba(229, 57, 53, 0.3);
        }

        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(229, 57, 53, 0.45);
            color: var(--text-white);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
        }

        .footer-inner {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            color: var(--text-white);
            margin-bottom: 14px;
        }

        .footer-brand .logo span {
            background: linear-gradient(135deg, #fff, #ffccbc);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }

        .footer h4 {
            color: var(--text-white);
            font-size: 16px;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--primary);
        }

        .footer ul li {
            margin-bottom: 10px;
        }

        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer ul li i {
            width: 18px;
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .race-types-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .category-banner h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            .nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 20px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s ease;
                pointer-events: none;
            }

            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }

            .nav a {
                width: 100%;
                padding: 12px 18px;
                font-size: 16px;
            }

            .nav .nav-cta {
                justify-content: center;
            }

            .nav-toggle {
                display: block;
            }

            .category-banner {
                padding: 60px 0 40px;
                min-height: 240px;
            }

            .category-banner h1 {
                font-size: 28px;
            }
            .category-banner p {
                font-size: 15px;
            }

            .section {
                padding: 50px 0;
            }
            .section-title h2 {
                font-size: 26px;
            }

            .category-intro-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .category-intro-image img {
                height: 240px;
            }

            .race-types-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .race-news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .process-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-section h2 {
                font-size: 26px;
            }
            .cta-btn {
                padding: 12px 30px;
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .category-banner h1 {
                font-size: 24px;
            }
            .section-title h2 {
                font-size: 22px;
            }
            .race-news-card .news-img {
                height: 160px;
            }
            .race-news-card .news-body {
                padding: 16px 18px 20px;
            }
            .race-type-card {
                padding: 24px 18px;
            }
            .process-step {
                padding: 24px 16px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 14px;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a8a3f;
            --primary-dark: #0f6b2e;
            --primary-light: #e8f5e9;
            --primary-gradient: linear-gradient(135deg, #1a8a3f 0%, #0f6b2e 100%);
            --accent: #f5a623;
            --accent-dark: #d4891a;
            --accent-light: #fef3e2;
            --bg: #ffffff;
            --bg-alt: #f5f8f5;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-white: #ffffff;
            --border: #e5e7eb;
            --border-light: #f0f0f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --transition: 0.3s ease;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --content-width: 800px;
            --nav-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: 2.4rem;
        }
        h2 {
            font-size: 1.8rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .content-container {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            margin: 12px auto 0;
        }
        .section-title p {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary-dark);
            letter-spacing: 0.3px;
            transition: background var(--transition), color var(--transition);
        }
        .badge-accent {
            background: var(--accent-light);
            color: var(--accent-dark);
        }
        .badge-sm {
            padding: 2px 10px;
            font-size: 0.7rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border: 2px solid transparent;
            cursor: pointer;
            text-decoration: none;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--primary-gradient);
            color: var(--text-white);
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(26, 138, 63, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 138, 63, 0.35);
            color: var(--text-white);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(26, 138, 63, 0.2);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--text);
            border-color: var(--accent);
            box-shadow: 0 4px 14px rgba(245, 166, 35, 0.25);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 166, 35, 0.35);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }
        .text-center {
            text-align: center;
        }
        .mt-1 { margin-top: 16px; }
        .mt-2 { margin-top: 32px; }
        .mt-3 { margin-top: 48px; }
        .mb-1 { margin-bottom: 16px; }
        .mb-2 { margin-bottom: 32px; }
        .gap-1 { gap: 16px; }
        .gap-2 { gap: 32px; }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }
        .header.scrolled {
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-dark);
            text-decoration: none;
            letter-spacing: -0.5px;
        }
        .logo i {
            font-size: 1.5rem;
            color: var(--primary);
        }
        .logo span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav a {
            padding: 8px 18px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            text-decoration: none;
            position: relative;
        }
        .nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav a.active {
            color: var(--primary-dark);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav a.nav-cta {
            background: var(--primary-gradient);
            color: var(--text-white);
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(26, 138, 63, 0.2);
        }
        .nav a.nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(26, 138, 63, 0.3);
            background: var(--primary-dark);
            color: var(--text-white);
        }
        .nav a.nav-cta i {
            font-size: 0.85rem;
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text);
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            padding: 140px 0 60px;
            background: linear-gradient(135deg, rgba(26, 138, 63, 0.08) 0%, rgba(15, 107, 46, 0.12) 100%), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(0,0,0,0.30) 0%, rgba(0,0,0,0.50) 100%);
            z-index: 1;
        }
        .article-hero .content-container {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 20px;
        }
        .article-hero .breadcrumb a {
            color: rgba(255,255,255,0.85);
            text-decoration: none;
            transition: color var(--transition);
        }
        .article-hero .breadcrumb a:hover {
            color: #ffffff;
        }
        .article-hero .breadcrumb span {
            color: rgba(255,255,255,0.5);
        }
        .article-hero .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            margin-bottom: 16px;
        }
        .article-hero .article-meta .badge {
            background: rgba(255,255,255,0.20);
            color: #ffffff;
            backdrop-filter: blur(4px);
        }
        .article-hero .article-meta .date {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.75);
        }
        .article-hero h1 {
            font-size: 2.6rem;
            color: #ffffff;
            max-width: 800px;
            line-height: 1.25;
            text-shadow: 0 2px 16px rgba(0,0,0,0.15);
            margin-bottom: 16px;
        }
        .article-hero .description {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.85);
            max-width: 640px;
            line-height: 1.6;
        }

        /* ===== Article Body ===== */
        .article-body {
            padding: 60px 0 40px;
        }
        .article-body .content-container {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 48px;
        }
        .article-main {
            min-width: 0;
        }
        .article-main .content-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-main .content-body p {
            margin-bottom: 1.4rem;
        }
        .article-main .content-body img {
            border-radius: var(--radius);
            margin: 28px 0;
            box-shadow: var(--shadow);
            width: 100%;
            height: auto;
        }
        .article-main .content-body h2,
        .article-main .content-body h3 {
            margin-top: 36px;
            margin-bottom: 16px;
            color: var(--text);
        }
        .article-main .content-body h2 {
            font-size: 1.6rem;
        }
        .article-main .content-body h3 {
            font-size: 1.25rem;
        }
        .article-main .content-body ul,
        .article-main .content-body ol {
            margin: 16px 0 20px;
            padding-left: 24px;
        }
        .article-main .content-body ul li {
            list-style: disc;
            margin-bottom: 8px;
            color: var(--text);
        }
        .article-main .content-body ol li {
            list-style: decimal;
            margin-bottom: 8px;
            color: var(--text);
        }
        .article-main .content-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-alt);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-main .content-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-main .content-body a:hover {
            color: var(--primary-dark);
        }

        /* ===== Article Sidebar ===== */
        .article-sidebar {
            position: sticky;
            top: calc(var(--nav-height) + 24px);
            align-self: start;
        }
        .sidebar-card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            padding: 24px;
            margin-bottom: 24px;
            border: 1px solid var(--border-light);
        }
        .sidebar-card h4 {
            font-size: 1rem;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i {
            color: var(--primary);
        }
        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            font-size: 0.9rem;
            color: var(--text);
            transition: color var(--transition);
            text-decoration: none;
            display: block;
        }
        .sidebar-card ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .sidebar-card .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-card .tag-cloud .badge {
            cursor: default;
        }
        .sidebar-card .tag-cloud .badge:hover {
            background: var(--primary);
            color: #ffffff;
        }

        /* ===== Article Footer / Nav ===== */
        .article-nav-links {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 2px solid var(--border-light);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 500;
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        .article-nav-links a:hover {
            color: var(--primary-dark);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--primary-gradient);
            color: var(--text-white);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.85);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .btn {
            background: var(--text-white);
            color: var(--primary-dark);
            border: none;
            box-shadow: 0 8px 28px rgba(0,0,0,0.15);
        }
        .cta-section .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0,0,0,0.20);
            background: var(--accent-light);
            color: var(--primary-dark);
        }

        /* ===== Error / Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-alt);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
        }
        .not-found-box i {
            font-size: 3rem;
            color: var(--text-light);
            margin-bottom: 20px;
            opacity: 0.5;
        }
        .not-found-box h2 {
            font-size: 1.8rem;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-light);
            margin-bottom: 24px;
        }

        /* ===== Footer ===== */
        .footer {
            background: #0f1a12;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            color: #ffffff;
            margin-bottom: 16px;
            font-size: 1.4rem;
        }
        .footer-brand .logo i {
            color: var(--accent);
        }
        .footer-brand .logo span {
            background: none;
            -webkit-text-fill-color: #ffffff;
            color: #ffffff;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
        }
        .footer h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer ul li a:hover {
            color: var(--accent);
        }
        .footer ul li i {
            width: 20px;
            color: var(--accent);
            margin-right: 6px;
        }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-body .content-container {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .nav {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-lg);
                gap: 4px;
            }
            .nav.open {
                display: flex;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .nav a.nav-cta {
                margin-top: 8px;
                text-align: center;
            }
            .nav-toggle {
                display: block;
            }
            .article-hero {
                padding: 120px 0 40px;
                min-height: 240px;
            }
            .article-hero h1 {
                font-size: 1.8rem;
            }
            .article-hero .description {
                font-size: 0.95rem;
            }
            .article-body {
                padding: 40px 0 24px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 48px 0;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.4rem; }
            h3 { font-size: 1.2rem; }
            .grid-2,
            .grid-3 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .article-hero .article-meta {
                gap: 10px;
            }
            .article-nav-links {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                padding: 0 16px;
            }
            .container,
            .content-container {
                padding: 0 16px;
            }
            .article-hero h1 {
                font-size: 1.5rem;
            }
            .logo {
                font-size: 1.15rem;
            }
            .logo i {
                font-size: 1.2rem;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
            .btn-lg {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
            .badge {
                font-size: 0.7rem;
                padding: 3px 10px;
            }
            .article-hero .description {
                font-size: 0.88rem;
            }
            .article-main .content-body {
                font-size: 0.95rem;
            }
            .section-title h2 {
                font-size: 1.3rem;
            }
            .not-found-box {
                padding: 40px 16px;
            }
            .not-found-box h2 {
                font-size: 1.3rem;
            }
        }