/* roulang page: index */
/* ===== Design Variables ===== */
    :root {
        --primary: #C62828;
        --primary-dark: #8E1D1D;
        --primary-light: #E53935;
        --secondary: #D4A017;
        --secondary-light: #F0C850;
        --secondary-dark: #B8860B;
        --bg-dark: #0A0A14;
        --bg-dark2: #12121F;
        --bg-body: #F8F6F2;
        --bg-card: #FFFFFF;
        --bg-card-alt: #F3F1EC;
        --text-primary: #1A1A2E;
        --text-secondary: #6B7280;
        --text-light: #9CA3AF;
        --text-white: #F9F9FB;
        --border: #E5E7EB;
        --border-light: #F0EFEB;
        --radius: 12px;
        --radius-sm: 8px;
        --radius-lg: 20px;
        --shadow: 0 4px 20px rgba(0,0,0,0.06);
        --shadow-hover: 0 12px 40px rgba(0,0,0,0.1);
        --shadow-hero: 0 20px 60px rgba(0,0,0,0.3);
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 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-sans);
        font-size: 16px;
        line-height: 1.6;
        color: var(--text-primary);
        background: var(--bg-body);
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary); }
    button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
    button { cursor: pointer; background: none; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
    h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
    h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); margin-bottom: 0.5em; }
    h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); }
    p { margin-bottom: 1em; color: var(--text-secondary); }
    .container {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== Header / Navigation ===== */
    .site-header {
        position: fixed;
        top: 0; left: 0; right: 0;
        z-index: 1000;
        height: var(--nav-height);
        background: rgba(255,255,255,0.92);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border-light);
        transition: var(--transition);
    }
    .site-header.scrolled { background: rgba(255,255,255,0.98); box-shadow: 0 2px 24px 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 {
        font-size: 1.35rem;
        font-weight: 800;
        letter-spacing: -0.02em;
        color: var(--text-primary);
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .logo i { color: var(--secondary); font-size: 1.2rem; }
    .logo span { color: var(--primary); }
    .nav-list { display: flex; align-items: center; gap: 32px; }
    .nav-list a {
        font-size: 0.92rem;
        font-weight: 500;
        color: var(--text-secondary);
        padding: 6px 0;
        position: relative;
        letter-spacing: 0.01em;
        transition: var(--transition);
    }
    .nav-list a::after {
        content: '';
        position: absolute;
        bottom: -2px; left: 0;
        width: 0; height: 2px;
        background: var(--primary);
        border-radius: 2px;
        transition: var(--transition);
    }
    .nav-list a:hover { color: var(--text-primary); }
    .nav-list a:hover::after { width: 100%; }
    .nav-list a.active { color: var(--primary); font-weight: 600; }
    .nav-list a.active::after { width: 100%; }
    .nav-cta {
        background: var(--primary);
        color: #fff !important;
        padding: 8px 20px !important;
        border-radius: 50px;
        font-weight: 600 !important;
        font-size: 0.85rem !important;
        letter-spacing: 0.02em;
        transition: var(--transition);
    }
    .nav-cta::after { display: none !important; }
    .nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(198,40,40,0.3); }
    .mobile-toggle { display: none; font-size: 1.5rem; color: var(--text-primary); cursor: pointer; padding: 4px; }

    /* ===== Hero ===== */
    .hero {
        min-height: 100vh;
        display: flex;
        align-items: center;
        position: relative;
        background: var(--bg-dark);
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        background-blend-mode: overlay;
        padding-top: var(--nav-height);
        overflow: hidden;
    }
    .hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(10,10,20,0.88) 30%, rgba(10,10,20,0.6) 70%, rgba(10,10,20,0.3) 100%);
        z-index: 1;
    }
    .hero::after {
        content: '';
        position: absolute;
        bottom: 0; left: 0; right: 0;
        height: 180px;
        background: linear-gradient(to top, var(--bg-body), transparent);
        z-index: 1;
    }
    .hero-content {
        position: relative;
        z-index: 2;
        max-width: 820px;
        padding: 80px 24px 100px;
    }
    .hero-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(212,160,23,0.18);
        border: 1px solid rgba(212,160,23,0.3);
        padding: 6px 18px;
        border-radius: 50px;
        font-size: 0.8rem;
        font-weight: 500;
        color: var(--secondary-light);
        letter-spacing: 0.04em;
        margin-bottom: 24px;
    }
    .hero-tag i { font-size: 0.7rem; }
    .hero h1 {
        color: var(--text-white);
        font-weight: 800;
        letter-spacing: -0.02em;
        line-height: 1.1;
        margin-bottom: 20px;
    }
    .hero h1 span { color: var(--secondary); }
    .hero p {
        font-size: clamp(1rem, 1.8vw, 1.2rem);
        color: rgba(255,255,255,0.7);
        max-width: 600px;
        margin-bottom: 36px;
        line-height: 1.7;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
    .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        background: var(--primary);
        color: #fff;
        padding: 14px 32px;
        border-radius: 50px;
        font-weight: 600;
        font-size: 0.95rem;
        transition: var(--transition);
        border: none;
        letter-spacing: 0.01em;
    }
    .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(198,40,40,0.35); color: #fff; }
    .btn-secondary {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        background: transparent;
        color: var(--text-white);
        padding: 14px 32px;
        border-radius: 50px;
        font-weight: 500;
        font-size: 0.95rem;
        border: 1.5px solid rgba(255,255,255,0.25);
        transition: var(--transition);
    }
    .btn-secondary:hover { border-color: var(--secondary); color: var(--secondary); background: rgba(212,160,23,0.08); }
    .hero-stats {
        display: flex;
        flex-wrap: wrap;
        gap: 40px;
        margin-top: 56px;
        padding-top: 40px;
        border-top: 1px solid rgba(255,255,255,0.08);
    }
    .hero-stat h4 { color: var(--text-white); font-size: 1.8rem; font-weight: 800; letter-spacing: -0.02em; }
    .hero-stat h4 small { font-size: 0.7rem; font-weight: 500; color: rgba(255,255,255,0.4); margin-left: 4px; }
    .hero-stat p { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin: 0; }

    /* ===== Section Common ===== */
    section { padding: 80px 0; }
    .section-header { text-align: center; max-width: 700px; margin: 0 auto 56px; }
    .section-header h2 { margin-bottom: 12px; }
    .section-header p { font-size: 1.05rem; color: var(--text-secondary); }
    .section-label {
        display: inline-block;
        font-size: 0.75rem;
        font-weight: 600;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        color: var(--primary);
        margin-bottom: 12px;
        border: 1px solid rgba(198,40,40,0.15);
        padding: 4px 14px;
        border-radius: 50px;
        background: rgba(198,40,40,0.04);
    }

    /* ===== Highlights / 版本亮点 ===== */
    .highlights { background: var(--bg-card); }
    .highlights-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 28px;
    }
    .highlight-card {
        background: var(--bg-body);
        border-radius: var(--radius);
        padding: 36px 28px;
        border: 1px solid var(--border-light);
        transition: var(--transition);
        text-align: center;
    }
    .highlight-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: transparent; }
    .highlight-icon {
        width: 60px; height: 60px;
        margin: 0 auto 20px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, rgba(198,40,40,0.08), rgba(212,160,23,0.08));
        border-radius: 16px;
        font-size: 1.6rem;
        color: var(--primary);
    }
    .highlight-card h3 { margin-bottom: 8px; font-size: 1.15rem; }
    .highlight-card p { font-size: 0.92rem; margin: 0; }

    /* ===== Category / 分类入口 ===== */
    .category-entry {
        background: var(--bg-dark);
        background-image: linear-gradient(135deg, var(--bg-dark) 40%, var(--bg-dark2) 100%);
        color: var(--text-white);
        padding: 80px 0;
    }
    .category-entry .section-label { color: var(--secondary); border-color: rgba(212,160,23,0.2); background: rgba(212,160,23,0.06); }
    .category-entry h2 { color: var(--text-white); }
    .category-entry .section-header p { color: rgba(255,255,255,0.6); }
    .category-card {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 48px;
        background: rgba(255,255,255,0.04);
        border: 1px solid rgba(255,255,255,0.08);
        border-radius: var(--radius-lg);
        padding: 40px 48px;
        transition: var(--transition);
    }
    .category-card:hover { border-color: rgba(212,160,23,0.25); background: rgba(255,255,255,0.06); }
    .category-card-img {
        flex: 0 0 280px;
        border-radius: var(--radius);
        overflow: hidden;
    }
    .category-card-img img { width: 100%; height: 200px; object-fit: cover; border-radius: var(--radius); }
    .category-card-body { flex: 1; min-width: 240px; }
    .category-card-body h3 { color: var(--text-white); font-size: 1.4rem; margin-bottom: 12px; }
    .category-card-body p { color: rgba(255,255,255,0.6); font-size: 0.95rem; margin-bottom: 20px; }
    .category-card-body .btn-primary { background: var(--secondary); color: var(--bg-dark); }
    .category-card-body .btn-primary:hover { background: var(--secondary-light); box-shadow: 0 8px 30px rgba(212,160,23,0.3); }

    /* ===== Latest News / CMS列表 ===== */
    .latest-news { background: var(--bg-card); }
    .news-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: 28px;
    }
    .news-card {
        background: var(--bg-body);
        border-radius: var(--radius);
        overflow: hidden;
        border: 1px solid var(--border-light);
        transition: var(--transition);
    }
    .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: transparent; }
    .news-card-img {
        height: 200px;
        background: var(--bg-dark2);
        overflow: hidden;
    }
    .news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
    .news-card:hover .news-card-img img { transform: scale(1.05); }
    .news-card-body { padding: 24px; }
    .news-card-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 0.78rem;
        color: var(--text-light);
        margin-bottom: 10px;
    }
    .news-card-meta .tag {
        background: rgba(198,40,40,0.08);
        color: var(--primary);
        padding: 2px 12px;
        border-radius: 50px;
        font-weight: 500;
        font-size: 0.72rem;
    }
    .news-card h3 { font-size: 1.05rem; margin-bottom: 8px; transition: var(--transition); }
    .news-card:hover h3 { color: var(--primary); }
    .news-card p { font-size: 0.88rem; color: var(--text-secondary); margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .news-empty {
        grid-column: 1 / -1;
        text-align: center;
        padding: 60px 20px;
        color: var(--text-light);
        font-size: 1rem;
        background: var(--bg-body);
        border-radius: var(--radius);
        border: 1px dashed var(--border);
    }
    .news-empty i { font-size: 2rem; color: var(--text-light); margin-bottom: 16px; display: block; }

    /* ===== Features ===== */
    .features { background: var(--bg-body); }
    .features-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 32px;
    }
    .feature-card {
        background: var(--bg-card);
        border-radius: var(--radius);
        padding: 32px;
        border: 1px solid var(--border-light);
        transition: var(--transition);
        display: flex;
        flex-direction: column;
        gap: 16px;
    }
    .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: transparent; }
    .feature-icon {
        width: 48px; height: 48px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        border-radius: 14px;
        color: #fff;
        font-size: 1.2rem;
    }
    .feature-card h3 { font-size: 1.1rem; }
    .feature-card p { font-size: 0.9rem; margin: 0; color: var(--text-secondary); }

    /* ===== Process / 使用流程 ===== */
    .process { background: var(--bg-card); }
    .process-steps {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 24px;
        position: relative;
    }
    .step {
        text-align: center;
        padding: 32px 20px;
        background: var(--bg-body);
        border-radius: var(--radius);
        border: 1px solid var(--border-light);
        position: relative;
        transition: var(--transition);
    }
    .step:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .step-num {
        width: 44px; height: 44px;
        margin: 0 auto 16px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--primary);
        color: #fff;
        font-weight: 700;
        font-size: 1.1rem;
        border-radius: 50%;
    }
    .step h4 { font-size: 1.05rem; margin-bottom: 8px; }
    .step p { font-size: 0.88rem; margin: 0; color: var(--text-secondary); }

    /* ===== FAQ ===== */
    .faq { background: var(--bg-body); }
    .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
    .faq-item {
        background: var(--bg-card);
        border-radius: var(--radius);
        border: 1px solid var(--border-light);
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover { border-color: var(--border); }
    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 20px 24px;
        font-weight: 600;
        font-size: 1rem;
        color: var(--text-primary);
        cursor: pointer;
        gap: 16px;
        transition: var(--transition);
    }
    .faq-question i { color: var(--text-light); transition: var(--transition); font-size: 0.9rem; }
    .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: var(--transition);
        padding: 0 24px;
        color: var(--text-secondary);
        font-size: 0.92rem;
        line-height: 1.7;
    }
    .faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 20px; }

    /* ===== CTA ===== */
    .cta {
        background: var(--bg-dark);
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        background-blend-mode: overlay;
        position: relative;
        padding: 100px 0;
        text-align: center;
    }
    .cta::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(10,10,20,0.85) 40%, rgba(10,10,20,0.6) 100%);
        z-index: 1;
    }
    .cta .container { position: relative; z-index: 2; }
    .cta h2 { color: var(--text-white); font-size: clamp(1.8rem, 3.5vw, 2.6rem); margin-bottom: 16px; }
    .cta p { color: rgba(255,255,255,0.6); max-width: 600px; margin: 0 auto 36px; font-size: 1.05rem; }
    .cta .btn-primary { background: var(--secondary); color: var(--bg-dark); font-size: 1rem; padding: 16px 40px; }
    .cta .btn-primary:hover { background: var(--secondary-light); box-shadow: 0 8px 30px rgba(212,160,23,0.3); }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--bg-dark);
        color: rgba(255,255,255,0.6);
        padding: 48px 0 32px;
        border-top: 1px solid rgba(255,255,255,0.06);
    }
    .footer-inner {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: 32px;
    }
    .footer-brand .logo { color: var(--text-white); margin-bottom: 12px; }
    .footer-brand p { font-size: 0.85rem; color: rgba(255,255,255,0.4); max-width: 300px; margin: 0; }
    .footer-links { display: flex; gap: 48px; flex-wrap: wrap; }
    .footer-links h5 { color: var(--text-white); font-size: 0.85rem; font-weight: 600; margin-bottom: 16px; letter-spacing: 0.04em; }
    .footer-links a { display: block; font-size: 0.85rem; color: rgba(255,255,255,0.5); padding: 4px 0; }
    .footer-links a:hover { color: var(--secondary); }
    .footer-bottom {
        margin-top: 40px;
        padding-top: 24px;
        border-top: 1px solid rgba(255,255,255,0.06);
        text-align: center;
        font-size: 0.8rem;
        color: rgba(255,255,255,0.35);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .category-card { flex-direction: column; padding: 32px; }
        .category-card-img { flex: none; width: 100%; }
        .category-card-img img { height: 180px; }
        .hero-stats { gap: 28px; }
    }
    @media (max-width: 768px) {
        :root { --nav-height: 64px; }
        .nav-list { display: none; position: absolute; top: var(--nav-height); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); flex-direction: column; padding: 20px 24px; gap: 16px; border-bottom: 1px solid var(--border-light); box-shadow: var(--shadow); }
        .nav-list.open { display: flex; }
        .nav-list a { width: 100%; padding: 10px 0; }
        .nav-list a::after { display: none; }
        .nav-list a.active { border-left: 3px solid var(--primary); padding-left: 12px; }
        .nav-cta { text-align: center; }
        .mobile-toggle { display: block; }
        .hero { min-height: 80vh; }
        .hero-content { padding: 60px 24px 80px; }
        .hero-stats { gap: 24px; }
        .hero-stat h4 { font-size: 1.4rem; }
        section { padding: 56px 0; }
        .section-header { margin-bottom: 36px; }
        .highlights-grid { grid-template-columns: 1fr 1fr; }
        .news-grid { grid-template-columns: 1fr; }
        .features-grid { grid-template-columns: 1fr 1fr; }
        .process-steps { grid-template-columns: 1fr 1fr; }
        .footer-inner { flex-direction: column; gap: 24px; }
        .footer-links { gap: 32px; }
    }
    @media (max-width: 520px) {
        .header-inner { padding: 0 16px; }
        .logo { font-size: 1.1rem; }
        .hero { min-height: 70vh; }
        .hero-content { padding: 40px 16px 60px; }
        .hero-stats { flex-direction: column; gap: 16px; padding-top: 24px; margin-top: 32px; }
        .highlights-grid { grid-template-columns: 1fr; }
        .features-grid { grid-template-columns: 1fr; }
        .process-steps { grid-template-columns: 1fr; }
        .news-grid { grid-template-columns: 1fr; }
        .category-card { padding: 20px; }
        .category-card-img img { height: 140px; }
        .faq-question { padding: 16px 18px; font-size: 0.92rem; }
        .cta { padding: 60px 0; }
        section { padding: 40px 0; }
        .container { padding: 0 16px; }
    }

    /* ===== Accessibility ===== */
    a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid var(--secondary); outline-offset: 2px; border-radius: 4px; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #0d0d1a;
            --primary-light: #1a1a3e;
            --accent: #d4a84b;
            --accent-light: #e8c56d;
            --accent-dark: #b8922e;
            --bg: #ffffff;
            --bg-warm: #f8f6f2;
            --bg-dark: #0d0d1a;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-white: #f9f9f9;
            --border: #e5e7eb;
            --border-light: #f0ece6;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.1);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --font-serif: 'Georgia', 'Noto Serif SC', 'Times New Roman', serif;
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 4px; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--primary); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.5rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1em; color: var(--text-light); }
        p:last-child { margin-bottom: 0; }

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

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled { background: rgba(255,255,255,0.98); box-shadow: var(--shadow-sm); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-family: var(--font-serif);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i { color: var(--accent); font-size: 1.2rem; }
        .logo span { color: var(--accent); font-weight: 400; }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav-list a:hover { color: var(--primary); background: var(--bg-warm); }
        .nav-list a.active {
            color: var(--primary);
            background: var(--bg-warm);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--accent);
        }
        .nav-list a.nav-cta {
            background: var(--primary);
            color: var(--text-white);
            padding: 8px 22px;
            border-radius: 100px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a.nav-cta i { font-size: 0.8rem; transition: transform var(--transition); }
        .nav-list a.nav-cta:hover { background: var(--accent); color: var(--primary); transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .nav-list a.nav-cta:hover i { transform: translateX(4px); }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
        .nav-toggle span { display: block; width: 24px; height: 2px; background: var(--primary); border-radius: 2px; transition: all var(--transition); }
        .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        @media (max-width: 768px) {
            .nav-toggle { display: flex; }
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 32px;
                gap: 6px;
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
                box-shadow: var(--shadow-lg);
            }
            .nav-list.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-list a { width: 100%; text-align: center; padding: 12px 18px; font-size: 1rem; }
            .nav-list a.active::after { display: none; }
            .nav-list a.active { background: var(--bg-warm); border-left: 3px solid var(--accent); border-radius: 0 8px 8px 0; }
            .nav-list a.nav-cta { justify-content: center; margin-top: 8px; }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
            isolation: isolate;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,13,26,0.85) 30%, rgba(13,13,26,0.4) 100%);
            z-index: 1;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0; left: 0; right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg), transparent);
            z-index: 2;
        }
        .banner-content {
            position: relative;
            z-index: 3;
            max-width: 800px;
        }
        .banner-content .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            margin-bottom: 20px;
        }
        .banner-content .breadcrumb a { color: rgba(255,255,255,0.7); }
        .banner-content .breadcrumb a:hover { color: var(--accent); }
        .banner-content .breadcrumb span { color: var(--accent); }
        .banner-content h1 {
            font-family: var(--font-serif);
            color: var(--text-white);
            margin-bottom: 16px;
            line-height: 1.2;
        }
        .banner-content h1 i { color: var(--accent); margin-right: 8px; }
        .banner-content p {
            color: rgba(255,255,255,0.8);
            font-size: 1.1rem;
            max-width: 640px;
            line-height: 1.8;
        }
        .banner-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            margin-top: 24px;
            flex-wrap: wrap;
        }
        .banner-meta .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 100px;
            background: rgba(212,168,75,0.15);
            color: var(--accent-light);
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(212,168,75,0.25);
        }
        .banner-meta .tag i { font-size: 0.75rem; }
        .banner-meta .stat {
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }
        .banner-meta .stat i { color: var(--accent); margin-right: 4px; }

        @media (max-width: 768px) {
            .page-banner { padding: 70px 0 60px; }
            .banner-content h1 { font-size: 1.8rem; }
            .banner-content p { font-size: 0.95rem; }
            .banner-meta { gap: 12px; }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt { background: var(--bg-warm); }
        .section-dark { background: var(--bg-dark); }
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 48px;
        }
        .section-header h2 { margin-bottom: 12px; }
        .section-header h2 i { color: var(--accent); }
        .section-header p { font-size: 1.05rem; }
        .section-header .subtitle {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .section-divider {
            width: 50px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
            margin: 16px auto 20px;
        }

        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-header { margin-bottom: 32px; }
        }

        /* ===== Intro / Description ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .intro-text h3 { font-family: var(--font-serif); margin-bottom: 16px; }
        .intro-text p { margin-bottom: 16px; }
        .intro-text .highlight-list { margin-top: 20px; }
        .intro-text .highlight-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .intro-text .highlight-list li:last-child { border-bottom: none; }
        .intro-text .highlight-list li i { color: var(--accent); margin-top: 3px; font-size: 1rem; flex-shrink: 0; }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image img { width: 100%; height: 400px; object-fit: cover; transition: transform 0.6s ease; }
        .intro-image:hover img { transform: scale(1.03); }
        .intro-image .badge {
            position: absolute;
            top: 20px;
            left: 20px;
            padding: 8px 18px;
            background: var(--accent);
            color: var(--primary);
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 700;
            box-shadow: var(--shadow-sm);
        }

        @media (max-width: 900px) {
            .intro-grid { grid-template-columns: 1fr; gap: 36px; }
            .intro-image img { height: 280px; }
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card {
            background: var(--bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
        .card-image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }
        .card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
        .card:hover .card-image img { transform: scale(1.05); }
        .card-image .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            background: rgba(13,13,26,0.75);
            backdrop-filter: blur(6px);
            color: var(--text-white);
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            border: 1px solid rgba(255,255,255,0.1);
        }
        .card-image .card-difficulty {
            position: absolute;
            bottom: 14px;
            right: 14px;
            padding: 4px 12px;
            background: var(--accent);
            color: var(--primary);
            border-radius: 100px;
            font-size: 0.7rem;
            font-weight: 700;
        }
        .card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
        .card-body h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .card-body p { font-size: 0.9rem; color: var(--text-light); flex: 1; margin-bottom: 16px; }
        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            border-top: 1px solid var(--border-light);
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .card-footer .btn-text {
            color: var(--accent);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition);
        }
        .card-footer .btn-text i { font-size: 0.75rem; }
        .card:hover .card-footer .btn-text { gap: 8px; }
        .card-footer .meta { display: flex; align-items: center; gap: 12px; }
        .card-footer .meta i { margin-right: 4px; }

        @media (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 640px) {
            .card-grid { grid-template-columns: 1fr; gap: 20px; }
            .card-body { padding: 18px; }
            .card-footer { padding: 14px 18px; flex-direction: column; gap: 8px; align-items: flex-start; }
        }

        /* ===== Featured / Deep Dive ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .featured-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .featured-image img { width: 100%; height: 420px; object-fit: cover; transition: transform 0.6s ease; }
        .featured-image:hover img { transform: scale(1.03); }
        .featured-image .play-badge {
            position: absolute;
            top: 50%; left: 50%;
            transform: translate(-50%, -50%);
            width: 72px; height: 72px;
            border-radius: 50%;
            background: rgba(212,168,75,0.9);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            box-shadow: 0 0 0 12px rgba(212,168,75,0.2);
            transition: all var(--transition);
        }
        .featured-image:hover .play-badge { transform: translate(-50%, -50%) scale(1.08); box-shadow: 0 0 0 20px rgba(212,168,75,0.15); }
        .featured-content h3 { font-family: var(--font-serif); margin-bottom: 12px; }
        .featured-content .meta-line {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .featured-content .meta-line .badge {
            padding: 2px 12px;
            background: var(--accent);
            color: var(--primary);
            border-radius: 100px;
            font-size: 0.7rem;
            font-weight: 700;
        }
        .featured-content p { font-size: 1rem; line-height: 1.8; }
        .featured-content .featured-list { margin-top: 20px; }
        .featured-content .featured-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 8px 0;
            font-size: 0.95rem;
            color: var(--text-light);
            border-bottom: 1px dashed var(--border);
        }
        .featured-content .featured-list li:last-child { border-bottom: none; }
        .featured-content .featured-list li i { color: var(--accent); margin-top: 4px; font-size: 0.9rem; flex-shrink: 0; }
        .featured-content .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 24px;
            padding: 12px 32px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
        }
        .featured-content .btn-primary:hover { background: var(--accent); color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .featured-content .btn-primary i { font-size: 0.8rem; transition: transform var(--transition); }
        .featured-content .btn-primary:hover i { transform: translateX(4px); }

        @media (max-width: 900px) {
            .featured-grid { grid-template-columns: 1fr; gap: 32px; }
            .featured-image img { height: 280px; }
            .featured-image .play-badge { width: 56px; height: 56px; font-size: 1.2rem; }
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            backdrop-filter: blur(8px);
            transition: all var(--transition);
        }
        .stat-card:hover { background: rgba(255,255,255,0.08); border-color: var(--accent); transform: translateY(-4px); }
        .stat-card .number {
            font-family: var(--font-serif);
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            font-weight: 400;
        }
        .stat-card .label i { margin-right: 4px; color: var(--accent); }

        @media (max-width: 900px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-card { padding: 24px 16px; }
            .stat-card .number { font-size: 2rem; }
        }
        @media (max-width: 480px) {
            .stats-grid { grid-template-columns: 1fr 1fr; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); }
        .faq-item.active { box-shadow: var(--shadow-sm); border-color: var(--accent); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            cursor: pointer;
            transition: background var(--transition);
            gap: 16px;
        }
        .faq-question:hover { background: var(--bg-warm); }
        .faq-question i { color: var(--accent); font-size: 0.85rem; transition: transform var(--transition); flex-shrink: 0; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        @media (max-width: 768px) {
            .faq-question { padding: 16px 18px; font-size: 0.95rem; }
            .faq-item.active .faq-answer { padding: 0 18px 16px; }
        }

        /* ===== CTA ===== */
        .cta-box {
            background: var(--bg-dark);
            border-radius: var(--radius-lg);
            padding: 72px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(212,168,75,0.12), transparent 70%);
            z-index: 1;
        }
        .cta-box > * { position: relative; z-index: 2; }
        .cta-box h2 { color: var(--text-white); font-family: var(--font-serif); margin-bottom: 12px; }
        .cta-box p { color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 28px; font-size: 1.05rem; }
        .cta-buttons { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
        .cta-buttons .btn-primary {
            padding: 14px 40px;
            background: var(--accent);
            color: var(--primary);
            border-radius: 100px;
            font-weight: 700;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }
        .cta-buttons .btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 12px 40px rgba(212,168,75,0.3); }
        .cta-buttons .btn-primary i { font-size: 0.85rem; }
        .cta-buttons .btn-secondary {
            padding: 14px 36px;
            border: 1px solid rgba(255,255,255,0.2);
            color: var(--text-white);
            border-radius: 100px;
            font-weight: 500;
            font-size: 1rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .cta-buttons .btn-secondary:hover { border-color: var(--accent); color: var(--accent); background: rgba(212,168,75,0.08); }

        @media (max-width: 768px) {
            .cta-box { padding: 48px 24px; border-radius: var(--radius-md); }
            .cta-box h2 { font-size: 1.5rem; }
            .cta-buttons { flex-direction: column; width: 100%; }
            .cta-buttons .btn-primary,
            .cta-buttons .btn-secondary { width: 100%; justify-content: center; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.6);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 60px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .logo { color: var(--text-white); font-size: 1.5rem; margin-bottom: 16px; }
        .footer-brand p { color: rgba(255,255,255,0.5); font-size: 0.9rem; max-width: 360px; line-height: 1.8; }
        .footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
        .footer-links h5 {
            color: var(--text-white);
            font-size: 0.85rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .footer-links a {
            display: block;
            padding: 5px 0;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
            transition: color var(--transition);
        }
        .footer-links a:hover { color: var(--accent); }
        .footer-bottom {
            padding-top: 24px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.35);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.45); }
        .footer-bottom a:hover { color: var(--accent); }

        @media (max-width: 768px) {
            .footer-inner { grid-template-columns: 1fr; gap: 36px; }
            .footer-links { grid-template-columns: 1fr 1fr; gap: 24px; }
            .site-footer { padding: 40px 0 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            z-index: 999;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            box-shadow: var(--shadow-md);
            transition: all var(--transition);
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            border: 1px solid rgba(255,255,255,0.1);
        }
        .back-top.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
        .back-top:hover { background: var(--accent); color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-lg); }

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

        /* ===== Print ===== */
        @media print {
            .site-header { position: relative; }
            body { padding-top: 0; }
            .nav-toggle, .back-top, .cta-buttons .btn-secondary { display: none; }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #b8860b;
            --primary-dark: #9a7209;
            --primary-light: #d4a92c;
            --primary-gradient: linear-gradient(135deg, #b8860b 0%, #d4a92c 50%, #f0d060 100%);
            --secondary: #1a1a2e;
            --secondary-light: #2d2d44;
            --accent: #e8c84a;
            --bg-body: #0b0b14;
            --bg-card: #141420;
            --bg-card-hover: #1c1c30;
            --bg-section-alt: #111120;
            --text-primary: #f0e8d0;
            --text-secondary: #c8c0a8;
            --text-muted: #8a8470;
            --border-color: #2a2a3e;
            --border-light: #3a3a50;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(184, 134, 11, 0.15);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-serif: Georgia, 'Times New Roman', serif;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 6rem;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }
        h1 {
            font-size: 2.5rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.25rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 var(--spacing-sm);
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 11, 20, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 11, 20, 0.98);
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.5px;
            user-select: none;
        }
        .logo i {
            color: var(--primary-light);
            font-size: 1.4rem;
        }
        .logo span {
            color: var(--primary-light);
            font-weight: 400;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 2px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav-list a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-list a.active {
            color: var(--primary-light);
            background: rgba(184, 134, 11, 0.12);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary-gradient);
            border-radius: 2px;
        }
        .nav-list a.nav-cta {
            background: var(--primary-gradient);
            color: var(--secondary);
            font-weight: 700;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-glow);
            margin-left: 12px;
        }
        .nav-list a.nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 40px rgba(184, 134, 11, 0.3);
            color: var(--secondary);
            background: var(--primary-gradient);
        }
        .nav-list a.nav-cta i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        @media (max-width: 860px) {
            .nav-toggle {
                display: block;
            }
            .nav-list {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(11, 11, 20, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: var(--spacing-sm) var(--spacing-md);
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                border-bottom: 1px solid var(--border-color);
                pointer-events: none;
                box-shadow: var(--shadow-lg);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                padding: 14px 18px;
                width: 100%;
                text-align: left;
                font-size: 1.05rem;
                border-radius: var(--radius-sm);
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-list a.active {
                background: rgba(184, 134, 11, 0.15);
                border-left: 3px solid var(--primary-light);
            }
            .nav-list a.nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
            }
        }

        /* ===== 文章页 Banner ===== */
        .article-banner {
            padding: 140px 0 60px;
            background: var(--bg-section-alt);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .article-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .article-banner .container {
            position: relative;
            z-index: 1;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: var(--text-muted);
        }
        .article-breadcrumb a:hover {
            color: var(--primary-light);
        }
        .article-breadcrumb i {
            font-size: 0.7rem;
            color: var(--text-muted);
        }
        .article-banner .category-tag {
            display: inline-block;
            background: var(--primary-gradient);
            color: var(--secondary);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .article-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            max-width: 900px;
            margin-bottom: 20px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.95rem;
            color: var(--text-muted);
        }
        .article-meta i {
            margin-right: 6px;
            color: var(--primary-light);
        }
        .article-meta span {
            display: flex;
            align-items: center;
        }
        @media (max-width: 768px) {
            .article-banner {
                padding: 110px 0 40px;
            }
            .article-banner h1 {
                font-size: 1.8rem;
            }
            .article-meta {
                gap: 12px;
                font-size: 0.85rem;
            }
        }

        /* ===== 文章正文 ===== */
        .article-main {
            padding: var(--spacing-lg) 0;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: var(--spacing-lg);
        }
        @media (max-width: 960px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .article-content .content-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .article-content .content-body h2,
        .article-content .content-body h3,
        .article-content .content-body h4 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        .article-content .content-body p {
            margin-bottom: 1.2rem;
        }
        .article-content .content-body ul,
        .article-content .content-body ol {
            margin-bottom: 1.2rem;
            padding-left: 1.5rem;
        }
        .article-content .content-body ul li {
            list-style: disc;
            margin-bottom: 0.5rem;
            color: var(--text-secondary);
        }
        .article-content .content-body ol li {
            list-style: decimal;
            margin-bottom: 0.5rem;
            color: var(--text-secondary);
        }
        .article-content .content-body a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content .content-body a:hover {
            color: var(--accent);
        }
        .article-content .content-body blockquote {
            border-left: 4px solid var(--primary-light);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            background: rgba(184, 134, 11, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        .article-content .content-body img {
            border-radius: var(--radius-sm);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content .content-body .wp-block-table {
            width: 100%;
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        .article-content .content-body table {
            width: 100%;
            border-collapse: collapse;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .article-content .content-body table th,
        .article-content .content-body table td {
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            text-align: left;
            color: var(--text-secondary);
        }
        .article-content .content-body table th {
            background: var(--bg-section-alt);
            color: var(--text-primary);
            font-weight: 600;
        }
        .article-content .content-body table tr:nth-child(even) {
            background: rgba(255, 255, 255, 0.02);
        }
        .article-content .content-body code {
            background: rgba(255, 255, 255, 0.05);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--accent);
        }
        .article-content .content-body pre {
            background: var(--bg-section-alt);
            padding: 1.2rem;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            border: 1px solid var(--border-color);
            margin: 1.5rem 0;
        }
        .article-content .content-body pre code {
            background: none;
            padding: 0;
            color: var(--text-secondary);
        }

        .article-not-found {
            text-align: center;
            padding: var(--spacing-xl) var(--spacing-md);
        }
        .article-not-found i {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-sm);
            display: block;
        }
        .article-not-found h2 {
            font-size: 2rem;
            margin-bottom: var(--spacing-sm);
        }
        .article-not-found p {
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-md);
        }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary-gradient);
            color: var(--secondary);
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .article-not-found .btn-back:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
            color: var(--secondary);
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: var(--spacing-sm);
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--primary-light);
        }
        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: all var(--transition);
            background: rgba(255, 255, 255, 0.02);
        }
        .sidebar-list a:hover {
            background: rgba(184, 134, 11, 0.08);
            color: var(--text-primary);
            transform: translateX(4px);
        }
        .sidebar-list a i {
            color: var(--primary-light);
            font-size: 0.8rem;
        }
        .sidebar-cta {
            background: var(--primary-gradient);
            color: var(--secondary);
            font-weight: 700;
            padding: 14px 24px;
            border-radius: var(--radius-sm);
            text-align: center;
            display: block;
            transition: all var(--transition);
            margin-top: 8px;
        }
        .sidebar-cta:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
            color: var(--secondary);
        }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: var(--spacing-lg) 0;
            background: var(--bg-section-alt);
            border-top: 1px solid var(--border-color);
        }
        .related-section h2 {
            text-align: center;
            margin-bottom: var(--spacing-md);
            font-size: 1.8rem;
        }
        .related-section h2 span {
            color: var(--primary-light);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        @media (max-width: 860px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-light);
        }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: var(--spacing-sm);
        }
        .related-card .card-body h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h4 a {
            color: var(--text-primary);
        }
        .related-card .card-body h4 a:hover {
            color: var(--primary-light);
        }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0;
        }
        .related-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 10px;
            padding-top: 10px;
            border-top: 1px solid var(--border-color);
        }
        .related-card .card-meta i {
            color: var(--primary-light);
            margin-right: 4px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--secondary);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-lg) 0 var(--spacing-md);
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-md);
        }
        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
        }
        .footer-brand .logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.95rem;
            color: var(--text-muted);
            max-width: 400px;
        }
        .footer-links {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-md);
        }
        .footer-links h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .footer-links a {
            display: block;
            padding: 5px 0;
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: var(--spacing-sm);
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            letter-spacing: 0.5px;
        }

        /* ===== 通用工具 ===== */
        .text-center {
            text-align: center;
        }
        .mb-1 {
            margin-bottom: var(--spacing-xs);
        }
        .mb-2 {
            margin-bottom: var(--spacing-sm);
        }
        .mb-3 {
            margin-bottom: var(--spacing-md);
        }
        .mb-4 {
            margin-bottom: var(--spacing-lg);
        }
        .mt-3 {
            margin-top: var(--spacing-md);
        }
        .mt-4 {
            margin-top: var(--spacing-lg);
        }

        /* ===== 文章页内标签 ===== */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: var(--spacing-md);
            padding-top: var(--spacing-sm);
            border-top: 1px solid var(--border-color);
        }
        .article-tags .tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(184, 134, 11, 0.1);
            color: var(--primary-light);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .article-tags .tag:hover {
            background: rgba(184, 134, 11, 0.2);
            transform: translateY(-1px);
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 480px) {
            .article-content {
                padding: var(--spacing-sm);
            }
            .article-content .content-body {
                font-size: 1rem;
            }
            .article-banner h1 {
                font-size: 1.5rem;
            }
            .sidebar-card {
                padding: var(--spacing-sm);
            }
            .related-card .card-img {
                height: 140px;
            }
        }

        /* ===== 结构化数据隐藏 ===== */
        .schema-hidden {
            display: none;
        }

        /* ===== 加载 / 空状态 ===== */
        .loading-placeholder {
            padding: var(--spacing-xl) var(--spacing-md);
            text-align: center;
            color: var(--text-muted);
        }
        .loading-placeholder i {
            font-size: 3rem;
            margin-bottom: var(--spacing-sm);
            display: block;
            color: var(--border-color);
        }