/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --primary: #B71C1C;
        --primary-dark: #8B0000;
        --primary-light: #E53935;
        --accent: #FFD600;
        --accent-light: #FFEE58;
        --secondary: #1A237E;
        --secondary-light: #283593;
        --bg-light: #F5F5F5;
        --bg-white: #FFFFFF;
        --bg-dark: #1a1a2e;
        --text-primary: #212121;
        --text-secondary: #616161;
        --text-light: #9E9E9E;
        --text-white: #FFFFFF;
        --border-color: #E0E0E0;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
        --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
        --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
        --radius-sm: 8px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --radius-full: 50px;
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
        --max-width: 1200px;
        --header-height: 72px;
    }

    /* ===== 基础 Reset ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
    body {
        font-family: var(--font-family);
        font-size: 16px;
        line-height: 1.6;
        color: var(--text-primary);
        background: var(--bg-light);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; transition: color var(--transition); }
    a:hover { color: var(--primary); }
    a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
    button, input, select, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
    button { cursor: pointer; background: none; }
    button:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
    .container {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== 导航 ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgba(255,255,255,0.96);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(0,0,0,0.06);
        height: var(--header-height);
        transition: box-shadow var(--transition);
    }
    .site-header.scrolled { box-shadow: var(--shadow-sm); }
    .header-inner {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
    }
    .logo-wrap {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }
    .logo-icon {
        width: 40px;
        height: 40px;
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--accent);
        font-size: 22px;
        font-weight: 800;
        font-style: italic;
        box-shadow: 0 4px 12px rgba(183,28,28,0.3);
    }
    .logo-text {
        font-size: 22px;
        font-weight: 800;
        color: var(--text-primary);
        letter-spacing: -0.5px;
    }
    .logo-text span { color: var(--primary); }
    .main-nav {
        display: flex;
        align-items: center;
        gap: 32px;
        flex: 1;
        justify-content: center;
    }
    .main-nav a {
        font-size: 15px;
        font-weight: 500;
        color: var(--text-secondary);
        padding: 8px 0;
        position: relative;
        transition: color var(--transition);
    }
    .main-nav a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2.5px;
        background: var(--primary);
        border-radius: 4px;
        transition: width var(--transition);
    }
    .main-nav a:hover,
    .main-nav a.active { color: var(--primary); }
    .main-nav a:hover::after,
    .main-nav a.active::after { width: 100%; }
    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }
    .search-toggle {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: var(--bg-light);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-secondary);
        font-size: 16px;
        transition: all var(--transition);
    }
    .search-toggle:hover { background: var(--primary); color: #fff; }
    .btn-header {
        padding: 8px 20px;
        border-radius: var(--radius-full);
        font-size: 14px;
        font-weight: 600;
        background: transparent;
        color: var(--text-secondary);
        border: 1.5px solid var(--border-color);
        transition: all var(--transition);
    }
    .btn-header:hover { border-color: var(--primary); color: var(--primary); }
    .btn-header-primary {
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        color: #fff;
        border: none;
        padding: 10px 28px;
        box-shadow: 0 4px 16px rgba(183,28,28,0.35);
    }
    .btn-header-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(183,28,28,0.40); color: #fff; }
    .mobile-menu-btn {
        display: none;
        width: 40px;
        height: 40px;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        color: var(--text-primary);
        border-radius: var(--radius-sm);
        background: none;
    }
    .mobile-menu-btn:hover { background: var(--bg-light); }

    /* ===== 移动端导航 ===== */
    @media (max-width: 900px) {
        .main-nav { display: none; }
        .header-actions .btn-header,
        .header-actions .btn-header-primary { display: none; }
        .mobile-menu-btn { display: flex; }
        .main-nav.mobile-open {
            display: flex;
            flex-direction: column;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(20px);
            padding: 24px 32px 32px;
            gap: 16px;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            z-index: 999;
        }
        .main-nav.mobile-open a { font-size: 18px; padding: 12px 0; }
        .header-actions.mobile-open {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 8px;
        }
        .header-actions.mobile-open .btn-header,
        .header-actions.mobile-open .btn-header-primary { display: inline-flex; }
    }

    /* ===== Hero 首屏 ===== */
    .hero-section {
        position: relative;
        min-height: 85vh;
        display: flex;
        align-items: center;
        margin-top: var(--header-height);
        background: var(--bg-dark);
        overflow: hidden;
    }
    .hero-bg {
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        opacity: 0.55;
        transform: scale(1.05);
        transition: transform 0.6s ease;
    }
    .hero-section:hover .hero-bg { transform: scale(1); }
    .hero-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(26,26,46,0.92) 0%, rgba(183,28,28,0.50) 50%, rgba(26,26,46,0.80) 100%);
    }
    .hero-content {
        position: relative;
        z-index: 2;
        max-width: 780px;
        padding: 80px 24px;
        color: var(--text-white);
    }
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(255,214,0,0.18);
        border: 1px solid rgba(255,214,0,0.30);
        padding: 6px 18px;
        border-radius: var(--radius-full);
        font-size: 14px;
        font-weight: 500;
        color: var(--accent);
        margin-bottom: 24px;
        backdrop-filter: blur(4px);
    }
    .hero-badge i { font-size: 12px; }
    .hero-title {
        font-size: 56px;
        font-weight: 800;
        line-height: 1.15;
        letter-spacing: -1.5px;
        margin-bottom: 20px;
        background: linear-gradient(to right, #fff, var(--accent-light));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .hero-desc {
        font-size: 20px;
        line-height: 1.7;
        color: rgba(255,255,255,0.80);
        margin-bottom: 36px;
        max-width: 600px;
    }
    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        align-items: center;
    }
    .btn-hero-primary {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 16px 40px;
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        color: #fff;
        font-size: 17px;
        font-weight: 700;
        border-radius: var(--radius-full);
        box-shadow: 0 8px 32px rgba(183,28,28,0.45);
        transition: all var(--transition);
    }
    .btn-hero-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(183,28,28,0.55); color: #fff; }
    .btn-hero-secondary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 16px 36px;
        background: rgba(255,255,255,0.10);
        backdrop-filter: blur(8px);
        border: 1.5px solid rgba(255,255,255,0.25);
        color: #fff;
        font-size: 16px;
        font-weight: 600;
        border-radius: var(--radius-full);
        transition: all var(--transition);
    }
    .btn-hero-secondary:hover { background: rgba(255,255,255,0.20); border-color: rgba(255,255,255,0.40); color: #fff; }
    .hero-stats {
        display: flex;
        gap: 40px;
        margin-top: 50px;
        padding-top: 30px;
        border-top: 1px solid rgba(255,255,255,0.12);
    }
    .hero-stat-item { text-align: left; }
    .hero-stat-num {
        font-size: 32px;
        font-weight: 800;
        color: var(--accent);
        letter-spacing: -0.5px;
    }
    .hero-stat-label {
        font-size: 14px;
        color: rgba(255,255,255,0.60);
        margin-top: 2px;
    }

    @media (max-width: 768px) {
        .hero-title { font-size: 36px; }
        .hero-desc { font-size: 17px; }
        .hero-stats { gap: 24px; flex-wrap: wrap; }
        .hero-stat-num { font-size: 26px; }
        .hero-section { min-height: 70vh; }
        .hero-content { padding: 60px 20px; }
    }
    @media (max-width: 520px) {
        .hero-title { font-size: 28px; }
        .hero-desc { font-size: 15px; }
        .btn-hero-primary, .btn-hero-secondary { padding: 14px 28px; font-size: 15px; width: 100%; justify-content: center; }
        .hero-actions { flex-direction: column; }
    }

    /* ===== 通用板块 ===== */
    .section {
        padding: 80px 0;
    }
    .section-alt { background: var(--bg-white); }
    .section-dark {
        background: var(--bg-dark);
        color: var(--text-white);
    }
    .section-dark .section-title,
    .section-dark .section-subtitle { color: #fff; }
    .section-header {
        text-align: center;
        margin-bottom: 52px;
    }
    .section-header-left { text-align: left; }
    .section-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(183,28,28,0.08);
        color: var(--primary);
        padding: 4px 16px;
        border-radius: var(--radius-full);
        font-size: 13px;
        font-weight: 600;
        margin-bottom: 14px;
        letter-spacing: 0.3px;
    }
    .section-title {
        font-size: 36px;
        font-weight: 800;
        letter-spacing: -0.8px;
        margin-bottom: 14px;
    }
    .section-title span { color: var(--primary); }
    .section-subtitle {
        font-size: 17px;
        color: var(--text-secondary);
        max-width: 600px;
        margin: 0 auto;
        line-height: 1.7;
    }
    .section-dark .section-subtitle { color: rgba(255,255,255,0.65); }
    @media (max-width: 768px) {
        .section { padding: 56px 0; }
        .section-title { font-size: 28px; }
        .section-subtitle { font-size: 15px; }
        .section-header { margin-bottom: 36px; }
    }

    /* ===== 特色/核心优势 ===== */
    .features-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 28px;
    }
    .feature-card {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        padding: 36px 28px 32px;
        box-shadow: var(--shadow-sm);
        border: 1px solid rgba(0,0,0,0.04);
        transition: all var(--transition);
        text-align: center;
    }
    .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
    .feature-icon {
        width: 60px;
        height: 60px;
        border-radius: var(--radius-sm);
        background: linear-gradient(135deg, rgba(183,28,28,0.08), rgba(183,28,28,0.02));
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 18px;
        font-size: 28px;
        color: var(--primary);
        transition: all var(--transition);
    }
    .feature-card:hover .feature-icon { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; }
    .feature-title {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 10px;
    }
    .feature-desc {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
    }
    @media (max-width: 1024px) {
        .features-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 520px) {
        .features-grid { grid-template-columns: 1fr; }
        .feature-card { padding: 28px 20px; }
    }

    /* ===== 分类入口 ===== */
    .category-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .category-card {
        position: relative;
        border-radius: var(--radius-md);
        overflow: hidden;
        background: var(--bg-white);
        box-shadow: var(--shadow-sm);
        border: 1px solid rgba(0,0,0,0.04);
        transition: all var(--transition);
        aspect-ratio: 4 / 3;
    }
    .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
    .category-card img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.6s ease;
    }
    .category-card:hover img { transform: scale(1.06); }
    .category-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.10) 60%);
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        padding: 28px 24px;
    }
    .category-overlay h3 {
        color: #fff;
        font-size: 22px;
        font-weight: 700;
        margin-bottom: 6px;
    }
    .category-overlay p {
        color: rgba(255,255,255,0.75);
        font-size: 14px;
    }
    .category-overlay .cat-tag {
        position: absolute;
        top: 16px;
        left: 16px;
        background: var(--accent);
        color: var(--text-primary);
        padding: 4px 14px;
        border-radius: var(--radius-full);
        font-size: 12px;
        font-weight: 700;
    }
    @media (max-width: 900px) {
        .category-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 520px) {
        .category-grid { grid-template-columns: 1fr; }
        .category-overlay h3 { font-size: 19px; }
    }

    /* ===== 资讯列表 ===== */
    .post-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .post-card {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        border: 1px solid rgba(0,0,0,0.04);
        transition: all var(--transition);
        display: flex;
        flex-direction: column;
    }
    .post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
    .post-card-img {
        width: 100%;
        aspect-ratio: 16 / 10;
        object-fit: cover;
        transition: transform 0.5s ease;
    }
    .post-card:hover .post-card-img { transform: scale(1.03); }
    .post-card-body {
        padding: 20px 22px 24px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .post-card-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 13px;
        color: var(--text-light);
        margin-bottom: 10px;
    }
    .post-card-meta .cat-badge {
        background: rgba(183,28,28,0.08);
        color: var(--primary);
        padding: 2px 12px;
        border-radius: var(--radius-full);
        font-weight: 600;
        font-size: 12px;
    }
    .post-card-title {
        font-size: 18px;
        font-weight: 700;
        line-height: 1.4;
        margin-bottom: 10px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .post-card-title a { color: var(--text-primary); }
    .post-card-title a:hover { color: var(--primary); }
    .post-card-excerpt {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 14px;
        flex: 1;
    }
    .post-card-link {
        font-size: 14px;
        font-weight: 600;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: gap var(--transition);
    }
    .post-card-link:hover { gap: 10px; }
    .empty-posts {
        grid-column: 1 / -1;
        text-align: center;
        padding: 48px 20px;
        background: var(--bg-white);
        border-radius: var(--radius-md);
        color: var(--text-secondary);
        font-size: 16px;
    }
    @media (max-width: 900px) {
        .post-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 520px) {
        .post-grid { grid-template-columns: 1fr; }
        .post-card-title { font-size: 16px; }
    }

    /* ===== 数据统计 ===== */
    .stats-wrapper {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 28px;
        text-align: center;
    }
    .stat-block {
        padding: 32px 16px;
        background: rgba(255,255,255,0.06);
        border-radius: var(--radius-md);
        border: 1px solid rgba(255,255,255,0.08);
        transition: all var(--transition);
    }
    .stat-block:hover { background: rgba(255,255,255,0.10); transform: translateY(-4px); }
    .stat-block .num {
        font-size: 42px;
        font-weight: 800;
        color: var(--accent);
        line-height: 1;
        margin-bottom: 6px;
    }
    .stat-block .label {
        font-size: 15px;
        color: rgba(255,255,255,0.65);
        font-weight: 500;
    }
    @media (max-width: 768px) {
        .stats-wrapper { grid-template-columns: repeat(2, 1fr); gap: 16px; }
        .stat-block .num { font-size: 32px; }
    }

    /* ===== 流程 ===== */
    .steps-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        position: relative;
    }
    .steps-grid::before {
        content: '';
        position: absolute;
        top: 36px;
        left: 10%;
        right: 10%;
        height: 2px;
        background: linear-gradient(to right, var(--primary), var(--accent));
        opacity: 0.25;
        z-index: 0;
    }
    .step-card {
        position: relative;
        z-index: 1;
        text-align: center;
        padding: 0 8px;
    }
    .step-number {
        width: 72px;
        height: 72px;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        color: #fff;
        font-size: 28px;
        font-weight: 800;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 18px;
        box-shadow: 0 8px 24px rgba(183,28,28,0.30);
        transition: all var(--transition);
    }
    .step-card:hover .step-number { transform: scale(1.08); box-shadow: 0 12px 32px rgba(183,28,28,0.40); }
    .step-card h4 {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 8px;
    }
    .step-card p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
    }
    @media (max-width: 900px) {
        .steps-grid { grid-template-columns: repeat(2, 1fr); }
        .steps-grid::before { display: none; }
    }
    @media (max-width: 520px) {
        .steps-grid { grid-template-columns: 1fr; }
        .step-card { padding: 0; }
    }

    /* ===== 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-md);
        overflow: hidden;
        border: 1px solid var(--border-color);
        transition: all var(--transition);
    }
    .faq-item:hover { border-color: rgba(183,28,28,0.20); }
    .faq-question {
        width: 100%;
        padding: 20px 24px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 16px;
        font-weight: 600;
        color: var(--text-primary);
        background: none;
        text-align: left;
        transition: all var(--transition);
    }
    .faq-question:hover { color: var(--primary); }
    .faq-question i {
        font-size: 14px;
        color: var(--text-light);
        transition: transform var(--transition);
    }
    .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.3s ease;
        padding: 0 24px;
        font-size: 15px;
        color: var(--text-secondary);
        line-height: 1.8;
    }
    .faq-item.open .faq-answer {
        max-height: 300px;
        padding: 0 24px 20px;
    }

    /* ===== CTA ===== */
    .cta-box {
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        border-radius: var(--radius-lg);
        padding: 60px 48px;
        text-align: center;
        position: relative;
        overflow: hidden;
    }
    .cta-box::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -20%;
        width: 400px;
        height: 400px;
        border-radius: 50%;
        background: rgba(255,214,0,0.08);
        pointer-events: none;
    }
    .cta-box::after {
        content: '';
        position: absolute;
        bottom: -30%;
        left: -10%;
        width: 300px;
        height: 300px;
        border-radius: 50%;
        background: rgba(255,255,255,0.05);
        pointer-events: none;
    }
    .cta-box h2 {
        font-size: 34px;
        font-weight: 800;
        color: #fff;
        margin-bottom: 14px;
        position: relative;
        z-index: 1;
    }
    .cta-box p {
        font-size: 17px;
        color: rgba(255,255,255,0.80);
        max-width: 560px;
        margin: 0 auto 28px;
        position: relative;
        z-index: 1;
    }
    .cta-box .btn-hero-primary {
        background: var(--accent);
        color: var(--text-primary);
        box-shadow: 0 8px 32px rgba(255,214,0,0.40);
        position: relative;
        z-index: 1;
    }
    .cta-box .btn-hero-primary:hover { box-shadow: 0 12px 40px rgba(255,214,0,0.55); transform: translateY(-3px); }
    @media (max-width: 768px) {
        .cta-box { padding: 40px 24px; }
        .cta-box h2 { font-size: 26px; }
        .cta-box p { font-size: 15px; }
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background: var(--bg-dark);
        color: rgba(255,255,255,0.70);
        padding: 56px 0 0;
    }
    .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-text { color: #fff; margin-bottom: 14px; display: inline-block; }
    .footer-brand .logo-text span { color: var(--accent); }
    .footer-brand p {
        font-size: 14px;
        line-height: 1.8;
        color: rgba(255,255,255,0.55);
        max-width: 320px;
    }
    .footer-social {
        display: flex;
        gap: 12px;
        margin-top: 18px;
    }
    .footer-social a {
        width: 38px;
        height: 38px;
        border-radius: 50%;
        background: rgba(255,255,255,0.08);
        display: flex;
        align-items: center;
        justify-content: center;
        color: rgba(255,255,255,0.60);
        font-size: 16px;
        transition: all var(--transition);
    }
    .footer-social a:hover { background: var(--primary); color: #fff; }
    .footer-col h4 {
        color: #fff;
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 16px;
    }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-col ul li a {
        font-size: 14px;
        color: rgba(255,255,255,0.55);
        transition: color var(--transition);
    }
    .footer-col ul li a:hover { color: var(--accent); }
    .footer-bottom {
        padding: 20px 0;
        text-align: center;
        font-size: 13px;
        color: rgba(255,255,255,0.35);
    }
    .footer-bottom a { color: rgba(255,255,255,0.40); }
    .footer-bottom a:hover { color: var(--accent); }
    @media (max-width: 900px) {
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    }
    @media (max-width: 520px) {
        .footer-grid { grid-template-columns: 1fr; text-align: center; }
        .footer-brand p { max-width: 100%; }
        .footer-social { justify-content: center; }
    }

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

    /* ===== 移动端适配完善 ===== */
    @media (max-width: 1024px) {
        .hero-title { font-size: 44px; }
    }
    @media (max-width: 480px) {
        .logo-text { font-size: 18px; }
        .logo-icon { width: 34px; height: 34px; font-size: 18px; }
        .section-title { font-size: 24px; }
        .hero-title { font-size: 26px; }
        .hero-desc { font-size: 14px; }
        .hero-stats { flex-direction: column; gap: 16px; }
        .stat-block .num { font-size: 28px; }
        .cta-box h2 { font-size: 22px; }
        .footer-grid { gap: 24px; }
        .post-card-body { padding: 16px; }
        .faq-question { padding: 16px 18px; font-size: 15px; }
    }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2b4d7a;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-dark: #1a1a2e;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #2d3436;
            --text-light: #636e72;
            --text-white: #ffffff;
            --border-color: #e0e0e0;
            --border-light: #f0f0f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --shadow-hover: 0 12px 36px rgba(230,57,70,0.18);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-w: 1200px;
            --nav-height: 72px;
            --spacer: 80px;
        }

        /* ===== 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-body);
            background: var(--bg-light);
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; transition: var(--transition); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-dark); font-weight: 700; }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            box-shadow: 0 1px 12px rgba(0,0,0,0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.1rem;
        }
        .logo span { color: var(--primary); }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: rgba(230,57,70,0.06);
        }
        .main-nav a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(230,57,70,0.30);
        }
        .main-nav a.active:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(230,57,70,0.40);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 50px;
            padding: 6px 16px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(230,57,70,0.10);
        }
        .nav-search input {
            background: transparent;
            border: none;
            padding: 4px 8px;
            font-size: 0.9rem;
            color: var(--text-dark);
            width: 140px;
        }
        .nav-search input::placeholder { color: var(--text-light); }
        .nav-search button {
            background: transparent;
            color: var(--text-light);
            cursor: pointer;
            padding: 4px;
            font-size: 0.95rem;
        }
        .nav-search button:hover { color: var(--primary); }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--text-white) !important;
            padding: 10px 24px !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(230,57,70,0.30);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230,57,70,0.40);
        }
        .nav-toggle {
            display: none;
            background: transparent;
            color: var(--text-dark);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover { background: var(--bg-light); }

        /* ===== 文章 Banner ===== */
        .article-banner {
            margin-top: var(--nav-height);
            padding: 60px 0 50px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--secondary) 100%);
            position: relative;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-breadcrumb a:hover { color: var(--primary-light); }
        .article-breadcrumb .sep { opacity: 0.5; }
        .article-breadcrumb .current { color: var(--text-white); }
        .article-banner h1 {
            font-size: 2.4rem;
            color: var(--text-white);
            max-width: 860px;
            line-height: 1.25;
            margin-bottom: 16px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            align-items: center;
            color: rgba(255,255,255,0.7);
            font-size: 0.95rem;
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i { font-size: 0.85rem; }
        .article-meta .category-tag {
            display: inline-block;
            background: rgba(230,57,70,0.25);
            color: var(--primary-light);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(230,57,70,0.30);
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px 44px;
            border: 1px solid var(--border-light);
        }
        .article-body .featured-image {
            width: 100%;
            border-radius: var(--radius-md);
            margin-bottom: 32px;
            max-height: 480px;
            object-fit: cover;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-body .content p {
            margin-bottom: 1.4em;
        }
        .article-body .content h2 {
            font-size: 1.6rem;
            margin-top: 2em;
            margin-bottom: 0.8em;
            color: var(--text-dark);
            border-left: 4px solid var(--primary);
            padding-left: 16px;
        }
        .article-body .content h3 {
            font-size: 1.25rem;
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            color: var(--text-dark);
        }
        .article-body .content ul, .article-body .content ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }
        .article-body .content ul li {
            list-style: disc;
            margin-bottom: 0.4em;
        }
        .article-body .content ol li {
            list-style: decimal;
            margin-bottom: 0.4em;
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(230,57,70,0.04);
            padding: 16px 24px;
            margin: 1.6em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 1.6em auto;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .content a:hover { color: var(--primary-dark); }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }
        .article-tags .tag {
            display: inline-block;
            background: var(--bg-light);
            color: var(--text-light);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }
        .article-share span {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-dark);
        }
        .article-share .share-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-light);
            color: var(--text-light);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            font-size: 1rem;
            cursor: pointer;
        }
        .article-share .share-btn:hover {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            padding: 24px 28px;
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            margin-bottom: 18px;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-card h3 i { color: var(--primary); font-size: 1.1rem; }
        .sidebar-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            transition: var(--transition);
        }
        .sidebar-list a:hover { color: var(--primary); }
        .sidebar-list .thumb {
            width: 64px;
            height: 48px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-light);
        }
        .sidebar-list .info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-list .info .title {
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-dark);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }
        .sidebar-list .info .date {
            font-size: 0.8rem;
            color: var(--text-light);
            margin-top: 4px;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--secondary), var(--bg-dark));
            color: var(--text-white);
            text-align: center;
            padding: 28px 24px;
        }
        .sidebar-cta h4 {
            color: var(--text-white);
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .sidebar-cta p {
            font-size: 0.9rem;
            opacity: 0.8;
            margin-bottom: 16px;
        }
        .sidebar-cta .btn {
            display: inline-block;
            background: var(--primary);
            color: var(--text-white);
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(230,57,70,0.30);
        }
        .sidebar-cta .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230,57,70,0.40);
        }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-light);
            border-top: 1px solid var(--border-light);
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .related-section .section-title h2 {
            font-size: 1.8rem;
            color: var(--text-dark);
        }
        .related-section .section-title p {
            color: var(--text-light);
            font-size: 1rem;
            margin-top: 8px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 20px 22px;
        }
        .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-dark); }
        .related-card .card-body h4 a:hover { color: var(--primary); }
        .related-card .card-body .meta {
            font-size: 0.85rem;
            color: var(--text-light);
            display: flex;
            gap: 12px;
        }

        /* ===== 内容未找到 ===== */
        .not-found-content {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found-content i {
            font-size: 4rem;
            color: var(--text-light);
            margin-bottom: 20px;
            opacity: 0.5;
        }
        .not-found-content h2 {
            font-size: 1.8rem;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .not-found-content p {
            color: var(--text-light);
            font-size: 1.05rem;
            margin-bottom: 24px;
        }
        .not-found-content .btn-back {
            display: inline-block;
            background: var(--primary);
            color: var(--text-white);
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
        }
        .not-found-content .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo-text {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
        }
        .footer-brand .logo-text span { color: var(--primary); }
        .footer-brand p {
            margin: 16px 0 20px;
            font-size: 0.95rem;
            line-height: 1.7;
            opacity: 0.75;
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.6);
            font-size: 1.1rem;
            transition: var(--transition);
            border: 1px solid rgba(255,255,255,0.05);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
            transform: translateY(-3px);
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 1.05rem;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.65);
            font-size: 0.93rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-col ul li a i { width: 18px; font-size: 0.85rem; }
        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 0.88rem;
            opacity: 0.6;
            color: rgba(255,255,255,0.6);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .sidebar-card { padding: 20px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            :root { --nav-height: 64px; --spacer: 48px; }
            .main-nav { display: none; }
            .main-nav.open { display: flex; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(20px); padding: 16px 24px; border-bottom: 1px solid var(--border-light); box-shadow: var(--shadow-md); gap: 4px; }
            .main-nav.open a { width: 100%; text-align: center; padding: 12px; }
            .nav-toggle { display: block; }
            .nav-search input { width: 100px; }
            .nav-cta { display: none; }
            .article-banner { padding: 40px 0 36px; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-body { padding: 24px 20px; }
            .article-body .content { font-size: 1rem; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .related-card img { height: 160px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-brand p { max-width: 100%; }
            .article-meta { gap: 10px 16px; font-size: 0.85rem; }
            .article-share { flex-wrap: wrap; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-banner h1 { font-size: 1.35rem; }
            .article-body { padding: 18px 14px; }
            .article-body .content h2 { font-size: 1.25rem; padding-left: 12px; }
            .sidebar-list .thumb { width: 52px; height: 40px; }
            .footer-bottom { font-size: 0.8rem; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2a4a7f;
            --accent: #f4a261;
            --accent-light: #f8c795;
            --bg-body: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #0d1b2a;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #6c7a8d;
            --text-white: #ffffff;
            --border: #e8ecf1;
            --border-light: #f0f2f5;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.10);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --spacing-section: 5rem;
            --spacing-block: 2.5rem;
        }

        /* ===== 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-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

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

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

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

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }
        .logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .logo .logo-highlight {
            color: var(--primary);
        }
        .logo span {
            font-weight: 300;
            color: var(--text-secondary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: center;
        }
        .main-nav a {
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }
        .main-nav a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.30);
        }
        .main-nav a.active:hover {
            background: var(--primary-dark);
            color: var(--text-white);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-actions .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border);
            border-radius: 100px;
            padding: 0 16px;
            transition: var(--transition);
            height: 40px;
        }
        .header-actions .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.10);
        }
        .header-actions .search-box input {
            background: transparent;
            border: none;
            outline: none;
            padding: 8px 0;
            font-size: 0.9rem;
            color: var(--text-primary);
            width: 120px;
            transition: var(--transition);
        }
        .header-actions .search-box input::placeholder {
            color: var(--text-light);
        }
        .header-actions .search-box i {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-left: 8px;
        }

        .btn-header {
            padding: 8px 22px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--primary);
            color: var(--text-white);
            transition: var(--transition);
            white-space: nowrap;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-header:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.30);
            color: var(--text-white);
        }

        /* Mobile toggle */
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-section {
            padding-top: calc(var(--header-height) + 20px);
            padding-bottom: 16px;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb-list {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .breadcrumb-list a {
            color: var(--text-light);
            font-weight: 400;
        }
        .breadcrumb-list a:hover {
            color: var(--primary);
        }
        .breadcrumb-list span.sep {
            color: var(--border);
            font-size: 0.7rem;
        }
        .breadcrumb-list .current {
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ===== Hero / Banner ===== */
        .category-banner {
            position: relative;
            background: var(--bg-dark);
            min-height: 320px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .category-banner .bg-overlay {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            mix-blend-mode: overlay;
        }
        .category-banner .bg-gradient {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.92) 0%, rgba(230, 57, 70, 0.60) 100%);
        }
        .category-banner .banner-content {
            position: relative;
            z-index: 2;
            padding: 60px 0 50px;
            text-align: center;
            color: var(--text-white);
        }
        .category-banner .banner-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .category-banner .banner-content h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .category-banner .banner-content p {
            font-size: 1.15rem;
            max-width: 680px;
            margin: 0 auto 24px;
            opacity: 0.9;
            line-height: 1.7;
        }
        .category-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .category-banner .banner-tags .tag {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 0.85rem;
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.20);
            transition: var(--transition);
        }
        .category-banner .banner-tags .tag:hover {
            background: rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
        }

        /* ===== Section common ===== */
        .section {
            padding: var(--spacing-section) 0;
            background: var(--bg-white);
        }
        .section-alt {
            background: var(--bg-body);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark .section-sub {
            color: var(--text-white);
        }
        .section-dark .section-sub {
            opacity: 0.8;
        }

        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header .section-sub {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-header .badge-label {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .card-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .card-item .card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            transition: var(--transition);
        }
        .card-item:hover .card-img {
            transform: scale(1.03);
        }
        .card-item .card-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-item .card-tag {
            display: inline-block;
            padding: 2px 12px;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .card-item h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .card-item p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }
        .card-item .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .card-item .card-meta i {
            margin-right: 4px;
        }
        .card-item .card-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .card-item .card-link:hover {
            gap: 8px;
        }

        /* ===== Guide Category (icon cards) ===== */
        .guide-cat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .guide-cat-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .guide-cat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: var(--primary);
        }
        .guide-cat-card .icon-box {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(230, 57, 70, 0.10), rgba(230, 57, 70, 0.04));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .guide-cat-card:hover .icon-box {
            background: var(--primary);
            color: var(--text-white);
            transform: scale(1.05);
        }
        .guide-cat-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .guide-cat-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.5;
        }

        /* ===== Featured list ===== */
        .featured-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .featured-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            padding: 16px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .featured-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .featured-item .fi-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(230, 57, 70, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .featured-item .fi-text h5 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .featured-item .fi-text span {
            font-size: 0.85rem;
            color: var(--text-light);
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item .stat-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .stat-num span {
            font-size: 1.4rem;
            font-weight: 400;
            color: var(--text-light);
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            color: var(--text-primary);
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
            border: none;
        }
        .faq-item .faq-q i {
            transition: var(--transition);
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            background: rgba(248, 249, 250, 0.4);
        }
        .faq-item.active .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            padding: 70px 0;
            text-align: center;
            color: var(--text-white);
            border-radius: 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .cta-btn {
            padding: 14px 40px;
            border-radius: 100px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
        }
        .cta-btn.primary {
            background: var(--text-white);
            color: var(--primary);
        }
        .cta-btn.primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.20);
            color: var(--primary-dark);
        }
        .cta-btn.outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.50);
        }
        .cta-btn.outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.80);
            padding: 60px 0 0;
        }
        .site-footer .container {
            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-text {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-white);
        }
        .footer-brand .logo-text span {
            color: var(--primary);
        }
        .footer-brand p {
            margin: 16px 0 20px;
            font-size: 0.9rem;
            line-height: 1.7;
            opacity: 0.7;
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.60);
            font-size: 1.1rem;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.60);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            transform: translateX(4px);
        }
        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 0.85rem;
            opacity: 0.5;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .category-banner .banner-content h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 3rem;
                --header-height: 64px;
            }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 6px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid var(--border);
                pointer-events: none;
                align-items: stretch;
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                padding: 12px 20px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .mobile-toggle {
                display: flex;
            }
            .header-actions .search-box {
                display: none;
            }
            .header-actions .btn-header {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .category-banner {
                min-height: 240px;
            }
            .category-banner .banner-content h1 {
                font-size: 1.8rem;
            }
            .category-banner .banner-content p {
                font-size: 1rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .guide-cat-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .featured-list {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .stat-item .stat-num {
                font-size: 2rem;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-btn {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
            .breadcrumb-section {
                padding-top: calc(var(--header-height) + 12px);
                padding-bottom: 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-banner .banner-content h1 {
                font-size: 1.5rem;
            }
            .category-banner .banner-content p {
                font-size: 0.9rem;
            }
            .category-banner .banner-tags .tag {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .card-item .card-body {
                padding: 16px 18px 20px;
            }
            .header-actions .btn-header {
                display: none;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }