/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --primary: #1a3a5c;
        --primary-light: #2a5a8c;
        --primary-dark: #0f2440;
        --accent: #e85d26;
        --accent-light: #f07a4a;
        --accent-dark: #c44a1a;
        --bg-white: #ffffff;
        --bg-light: #f5f8fc;
        --bg-gray: #eef2f7;
        --bg-dark: #0f1a2e;
        --text-dark: #1a1a2e;
        --text-body: #2d3a4a;
        --text-light: #6b7a8a;
        --text-white: #f0f4f8;
        --border: #dce4ed;
        --border-light: #e8edf4;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
        --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
        --shadow-lg: 0 16px 48px rgba(0,0,0,0.10);
        --shadow-xl: 0 24px 64px rgba(0,0,0,0.14);
        --radius-sm: 8px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --space-xs: 6px;
        --space-sm: 12px;
        --space-md: 24px;
        --space-lg: 48px;
        --space-xl: 80px;
        --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
        --transition: all 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-font-smoothing: antialiased; }
    body {
        font-family: var(--font-family);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-body);
        background: var(--bg-light);
    }
    a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--accent); }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    ul, ol { list-style: none; }
    /* ===== Container ===== */
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 var(--space-md);
    }
    .container-sm { max-width: 960px; }
    /* =====  Typography  ===== */
    .section-title {
        font-size: 2rem;
        font-weight: 700;
        color: var(--text-dark);
        margin-bottom: var(--space-sm);
        line-height: 1.25;
    }
    .section-subtitle {
        font-size: 1.1rem;
        color: var(--text-light);
        max-width: 640px;
        line-height: 1.6;
    }
    .section-header {
        text-align: center;
        margin-bottom: var(--space-lg);
    }
    .section-header .section-subtitle {
        margin: 0 auto;
    }
    @media (max-width: 768px) {
        .section-title { font-size: 1.6rem; }
        .section-subtitle { font-size: 1rem; }
    }
    /* ===== Buttons ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 32px;
        font-size: 1rem;
        font-weight: 600;
        border: none;
        border-radius: var(--radius-sm);
        cursor: pointer;
        transition: var(--transition);
        text-decoration: none;
        white-space: nowrap;
    }
    .btn-primary {
        background: var(--accent);
        color: #fff;
        box-shadow: 0 4px 14px rgba(232,93,38,0.30);
    }
    .btn-primary:hover {
        background: var(--accent-dark);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(232,93,38,0.40);
    }
    .btn-primary:active { transform: translateY(0); }
    .btn-outline {
        background: transparent;
        color: var(--primary);
        border: 2px solid var(--primary);
    }
    .btn-outline:hover {
        background: var(--primary);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }
    .btn-white {
        background: #fff;
        color: var(--primary-dark);
    }
    .btn-white:hover {
        background: var(--bg-light);
        color: var(--primary-dark);
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }
    .btn-sm { padding: 8px 20px; font-size: 0.9rem; }
    .btn-lg { padding: 16px 40px; font-size: 1.15rem; }
    /* ===== Badge / Tag ===== */
    .badge {
        display: inline-block;
        padding: 4px 14px;
        font-size: 0.8rem;
        font-weight: 600;
        border-radius: 40px;
        background: var(--bg-gray);
        color: var(--text-light);
        transition: var(--transition);
    }
    .badge-accent {
        background: rgba(232,93,38,0.12);
        color: var(--accent);
    }
    .badge-primary {
        background: rgba(26,58,92,0.10);
        color: var(--primary);
    }
    .badge-white {
        background: rgba(255,255,255,0.20);
        color: #fff;
    }
    /* ===== Header & Nav ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgba(15,26,46,0.96);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(255,255,255,0.06);
        transition: var(--transition);
    }
    .site-header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 70px;
    }
    .logo {
        font-size: 1.35rem;
        font-weight: 800;
        color: #fff;
        letter-spacing: 0.5px;
        white-space: nowrap;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .logo i {
        color: var(--accent);
        font-size: 1.5rem;
    }
    .logo span {
        background: linear-gradient(135deg, #f0f4f8, #b0c8e0);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .logo:hover { color: #fff; }
    .nav-tabs {
        display: flex;
        align-items: center;
        gap: 4px;
        background: rgba(255,255,255,0.06);
        padding: 4px;
        border-radius: 40px;
    }
    .nav-tabs a {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 8px 20px;
        font-size: 0.9rem;
        font-weight: 500;
        color: rgba(255,255,255,0.70);
        border-radius: 30px;
        transition: var(--transition);
        text-decoration: none;
        white-space: nowrap;
    }
    .nav-tabs a i { font-size: 0.85rem; }
    .nav-tabs a:hover {
        color: #fff;
        background: rgba(255,255,255,0.10);
    }
    .nav-tabs a.active {
        color: #fff;
        background: var(--accent);
        box-shadow: 0 4px 12px rgba(232,93,38,0.35);
    }
    .nav-cta {
        display: flex;
        align-items: center;
        gap: var(--space-sm);
    }
    .nav-cta .btn { padding: 8px 22px; font-size: 0.9rem; }
    .mobile-toggle {
        display: none;
        background: none;
        border: none;
        color: #fff;
        font-size: 1.6rem;
        cursor: pointer;
        padding: 6px;
        border-radius: 6px;
        transition: var(--transition);
    }
    .mobile-toggle:hover { background: rgba(255,255,255,0.08); }
    /* 移动端导航 */
    @media (max-width: 900px) {
        .nav-tabs { display: none; }
        .nav-cta .btn-outline { display: none; }
        .mobile-toggle { display: block; }
        .site-header .container { height: 64px; }
        .nav-tabs.mobile-open {
            display: flex;
            flex-direction: column;
            position: absolute;
            top: 64px;
            left: 0;
            right: 0;
            background: rgba(15,26,46,0.98);
            backdrop-filter: blur(16px);
            padding: var(--space-md);
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            gap: 6px;
            align-items: stretch;
        }
        .nav-tabs.mobile-open a {
            justify-content: center;
            padding: 12px 20px;
        }
    }
    @media (max-width: 520px) {
        .logo { font-size: 1.1rem; }
        .logo i { font-size: 1.2rem; }
        .nav-cta .btn { padding: 6px 16px; font-size: 0.8rem; }
    }
    /* ===== Hero ===== */
    .hero {
        position: relative;
        min-height: 92vh;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--bg-dark);
        padding: 120px 0 80px;
        overflow: hidden;
    }
    .hero-bg {
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        opacity: 0.45;
        transform: scale(1.05);
        animation: heroFade 1.8s ease-out;
    }
    @keyframes heroFade {
        0% { opacity: 0; transform: scale(1.12); }
        100% { opacity: 0.45; transform: scale(1.05); }
    }
    .hero-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(160deg, rgba(15,26,46,0.88) 0%, rgba(15,26,46,0.60) 50%, rgba(15,26,46,0.88) 100%);
    }
    .hero-content {
        position: relative;
        z-index: 2;
        text-align: center;
        max-width: 820px;
        padding: 0 var(--space-md);
    }
    .hero-badge {
        display: inline-block;
        padding: 6px 22px;
        font-size: 0.85rem;
        font-weight: 600;
        color: #fff;
        background: rgba(232,93,38,0.25);
        border: 1px solid rgba(232,93,38,0.35);
        border-radius: 40px;
        margin-bottom: var(--space-md);
        letter-spacing: 0.5px;
        backdrop-filter: blur(4px);
    }
    .hero h1 {
        font-size: 3.2rem;
        font-weight: 800;
        color: #fff;
        line-height: 1.15;
        margin-bottom: var(--space-md);
        letter-spacing: -0.5px;
    }
    .hero h1 .highlight {
        background: linear-gradient(135deg, var(--accent), #f7a072);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .hero p {
        font-size: 1.2rem;
        color: rgba(255,255,255,0.78);
        max-width: 600px;
        margin: 0 auto var(--space-lg);
        line-height: 1.7;
    }
    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: var(--space-sm);
        justify-content: center;
    }
    .hero-stats {
        display: flex;
        gap: var(--space-lg);
        justify-content: center;
        margin-top: var(--space-xl);
        flex-wrap: wrap;
    }
    .hero-stat {
        text-align: center;
        color: #fff;
    }
    .hero-stat .num {
        font-size: 2.2rem;
        font-weight: 800;
        color: var(--accent);
        line-height: 1.2;
    }
    .hero-stat .label {
        font-size: 0.9rem;
        color: rgba(255,255,255,0.60);
        margin-top: 4px;
    }
    @media (max-width: 768px) {
        .hero { min-height: 80vh; padding: 100px 0 60px; }
        .hero h1 { font-size: 2.2rem; }
        .hero p { font-size: 1rem; }
        .hero-stats { gap: var(--space-md); }
        .hero-stat .num { font-size: 1.8rem; }
    }
    @media (max-width: 520px) {
        .hero h1 { font-size: 1.8rem; }
        .hero-actions .btn { width: 100%; justify-content: center; }
    }
    /* ===== Section spacing ===== */
    .section {
        padding: var(--space-xl) 0;
    }
    .section-bg-white { background: var(--bg-white); }
    .section-bg-light { background: var(--bg-light); }
    .section-bg-gray { background: var(--bg-gray); }
    .section-bg-dark {
        background: var(--bg-dark);
        color: var(--text-white);
    }
    .section-bg-dark .section-title { color: #fff; }
    .section-bg-dark .section-subtitle { color: rgba(255,255,255,0.65); }
    @media (max-width: 768px) {
        .section { padding: var(--space-lg) 0; }
    }
    /* ===== Card Grid ===== */
    .card-grid {
        display: grid;
        gap: var(--space-md);
    }
    .card-grid-2 { grid-template-columns: repeat(2, 1fr); }
    .card-grid-3 { grid-template-columns: repeat(3, 1fr); }
    .card-grid-4 { grid-template-columns: repeat(4, 1fr); }
    @media (max-width: 1024px) {
        .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
        .card-grid-3, .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 520px) {
        .card-grid-2, .card-grid-3, .card-grid-4 { grid-template-columns: 1fr; }
    }
    /* ===== Card Component ===== */
    .card {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        overflow: hidden;
        transition: var(--transition);
        border: 1px solid var(--border-light);
    }
    .card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
        border-color: var(--border);
    }
    .card-img {
        width: 100%;
        aspect-ratio: 16 / 10;
        object-fit: cover;
        display: block;
    }
    .card-body {
        padding: var(--space-md);
    }
    .card-body .badge { margin-bottom: var(--space-sm); }
    .card-body h3 {
        font-size: 1.15rem;
        font-weight: 700;
        color: var(--text-dark);
        margin-bottom: 8px;
        line-height: 1.35;
    }
    .card-body p {
        font-size: 0.95rem;
        color: var(--text-light);
        line-height: 1.6;
    }
    .card-footer {
        padding: var(--space-sm) var(--space-md);
        border-top: 1px solid var(--border-light);
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 0.85rem;
        color: var(--text-light);
    }
    /* ===== Feature / Icon Cards ===== */
    .feature-card {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        padding: var(--space-md);
        text-align: center;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-light);
        transition: var(--transition);
    }
    .feature-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
        border-color: var(--border);
    }
    .feature-card .icon {
        width: 64px;
        height: 64px;
        margin: 0 auto var(--space-sm);
        background: var(--bg-light);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.6rem;
        color: var(--accent);
        transition: var(--transition);
    }
    .feature-card:hover .icon {
        background: var(--accent);
        color: #fff;
        transform: scale(1.05);
    }
    .feature-card h3 {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--text-dark);
        margin-bottom: 6px;
    }
    .feature-card p {
        font-size: 0.92rem;
        color: var(--text-light);
        line-height: 1.6;
    }
    /* ===== Category Entry Cards ===== */
    .category-card {
        position: relative;
        border-radius: var(--radius-md);
        overflow: hidden;
        background: var(--bg-dark);
        min-height: 260px;
        display: flex;
        align-items: flex-end;
        box-shadow: var(--shadow-md);
        transition: var(--transition);
        cursor: pointer;
    }
    .category-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-xl);
    }
    .category-card-bg {
        position: absolute;
        inset: 0;
        background-size: cover;
        background-position: center;
        opacity: 0.55;
        transition: var(--transition);
    }
    .category-card:hover .category-card-bg {
        opacity: 0.70;
        transform: scale(1.04);
    }
    .category-card-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(0deg, rgba(15,26,46,0.85) 0%, rgba(15,26,46,0.20) 70%, transparent 100%);
    }
    .category-card-content {
        position: relative;
        z-index: 2;
        padding: var(--space-md);
        width: 100%;
    }
    .category-card-content .badge {
        margin-bottom: 6px;
    }
    .category-card-content h3 {
        font-size: 1.3rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: 4px;
    }
    .category-card-content p {
        font-size: 0.9rem;
        color: rgba(255,255,255,0.72);
        line-height: 1.5;
    }
    /* ===== Content / CMS List ===== */
    .post-list {
        display: flex;
        flex-direction: column;
        gap: var(--space-sm);
    }
    .post-item {
        display: flex;
        align-items: flex-start;
        gap: var(--space-md);
        background: var(--bg-white);
        padding: var(--space-md);
        border-radius: var(--radius-md);
        border: 1px solid var(--border-light);
        transition: var(--transition);
    }
    .post-item:hover {
        border-color: var(--border);
        box-shadow: var(--shadow-md);
        transform: translateX(4px);
    }
    .post-item .post-thumb {
        width: 160px;
        min-height: 100px;
        border-radius: var(--radius-sm);
        background: var(--bg-gray);
        flex-shrink: 0;
        overflow: hidden;
    }
    .post-item .post-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .post-item .post-info {
        flex: 1;
        min-width: 0;
    }
    .post-item .post-info .meta {
        display: flex;
        align-items: center;
        gap: var(--space-sm);
        font-size: 0.82rem;
        color: var(--text-light);
        margin-bottom: 6px;
    }
    .post-item .post-info .meta .badge { font-size: 0.75rem; padding: 2px 12px; }
    .post-item .post-info h3 {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--text-dark);
        margin-bottom: 6px;
        line-height: 1.35;
    }
    .post-item .post-info h3 a { color: inherit; }
    .post-item .post-info h3 a:hover { color: var(--accent); }
    .post-item .post-info p {
        font-size: 0.9rem;
        color: var(--text-light);
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .post-item .post-info .read-more {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        font-size: 0.85rem;
        font-weight: 600;
        color: var(--accent);
        margin-top: 8px;
    }
    .post-item .post-info .read-more:hover { gap: 8px; }
    @media (max-width: 640px) {
        .post-item { flex-direction: column; }
        .post-item .post-thumb { width: 100%; height: 180px; }
    }
    /* ===== Stats / Data Block ===== */
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-md);
    }
    .stat-card {
        background: rgba(255,255,255,0.06);
        border: 1px solid rgba(255,255,255,0.10);
        border-radius: var(--radius-md);
        padding: var(--space-md);
        text-align: center;
        backdrop-filter: blur(6px);
        transition: var(--transition);
    }
    .stat-card:hover {
        background: rgba(255,255,255,0.10);
        border-color: rgba(255,255,255,0.20);
        transform: translateY(-2px);
    }
    .stat-card .num {
        font-size: 2.4rem;
        font-weight: 800;
        color: var(--accent);
        line-height: 1.2;
    }
    .stat-card .label {
        font-size: 0.9rem;
        color: rgba(255,255,255,0.65);
        margin-top: 4px;
    }
    @media (max-width: 768px) {
        .stats-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 520px) {
        .stats-grid { grid-template-columns: 1fr 1fr; }
        .stat-card .num { font-size: 1.8rem; }
    }
    /* ===== Steps / Timeline ===== */
    .steps {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-md);
        counter-reset: step;
    }
    .step-card {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        padding: var(--space-md);
        border: 1px solid var(--border-light);
        position: relative;
        transition: var(--transition);
    }
    .step-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-md);
    }
    .step-card::before {
        counter-increment: step;
        content: "0" counter(step);
        position: absolute;
        top: var(--space-sm);
        right: var(--space-sm);
        font-size: 2.4rem;
        font-weight: 800;
        color: rgba(26,58,92,0.06);
        line-height: 1;
    }
    .step-card .step-icon {
        width: 52px;
        height: 52px;
        background: var(--bg-light);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.4rem;
        color: var(--accent);
        margin-bottom: var(--space-sm);
        transition: var(--transition);
    }
    .step-card:hover .step-icon {
        background: var(--accent);
        color: #fff;
    }
    .step-card h3 {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--text-dark);
        margin-bottom: 6px;
    }
    .step-card p {
        font-size: 0.9rem;
        color: var(--text-light);
        line-height: 1.6;
    }
    @media (max-width: 768px) {
        .steps { grid-template-columns: 1fr; }
    }
    /* ===== FAQ ===== */
    .faq-list {
        max-width: 780px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: var(--space-sm);
    }
    .faq-item {
        background: var(--bg-white);
        border-radius: var(--radius-sm);
        border: 1px solid var(--border-light);
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover { border-color: var(--border); }
    .faq-question {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: var(--space-sm) var(--space-md);
        background: none;
        border: none;
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-dark);
        cursor: pointer;
        text-align: left;
        gap: var(--space-sm);
        transition: var(--transition);
    }
    .faq-question:hover { color: var(--accent); }
    .faq-question i { transition: var(--transition); font-size: 0.9rem; color: var(--text-light); }
    .faq-item.active .faq-question i { transform: rotate(180deg); color: var(--accent); }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.3s ease;
        padding: 0 var(--space-md);
    }
    .faq-item.active .faq-answer {
        max-height: 300px;
        padding: 0 var(--space-md) var(--space-sm);
    }
    .faq-answer p {
        font-size: 0.95rem;
        color: var(--text-light);
        line-height: 1.7;
        border-top: 1px solid var(--border-light);
        padding-top: var(--space-sm);
    }
    /* ===== CTA ===== */
    .cta {
        background: var(--bg-dark);
        position: relative;
        overflow: hidden;
    }
    .cta-bg {
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        opacity: 0.15;
    }
    .cta .container {
        position: relative;
        z-index: 2;
        text-align: center;
        padding: var(--space-xl) var(--space-md);
    }
    .cta h2 {
        font-size: 2.2rem;
        font-weight: 800;
        color: #fff;
        margin-bottom: var(--space-sm);
    }
    .cta p {
        font-size: 1.1rem;
        color: rgba(255,255,255,0.70);
        max-width: 560px;
        margin: 0 auto var(--space-lg);
    }
    .cta .btn { font-size: 1.05rem; padding: 16px 44px; }
    @media (max-width: 768px) {
        .cta h2 { font-size: 1.7rem; }
        .cta p { font-size: 0.95rem; }
    }
    /* ===== Footer ===== */
    .site-footer {
        background: var(--bg-dark);
        border-top: 1px solid rgba(255,255,255,0.06);
        padding: var(--space-lg) 0 var(--space-md);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: var(--space-lg);
        margin-bottom: var(--space-lg);
    }
    .footer-brand .logo { margin-bottom: var(--space-sm); }
    .footer-brand p {
        font-size: 0.9rem;
        color: rgba(255,255,255,0.55);
        line-height: 1.7;
        max-width: 300px;
    }
    .footer-col h4 {
        font-size: 1rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: var(--space-sm);
    }
    .footer-col ul li { margin-bottom: 6px; }
    .footer-col ul li a {
        font-size: 0.9rem;
        color: rgba(255,255,255,0.55);
        transition: var(--transition);
    }
    .footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.06);
        padding-top: var(--space-md);
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: var(--space-sm);
        font-size: 0.85rem;
        color: rgba(255,255,255,0.40);
    }
    .footer-bottom a { color: rgba(255,255,255,0.50); }
    .footer-bottom a:hover { color: var(--accent); }
    @media (max-width: 768px) {
        .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-md); }
        .footer-brand { grid-column: 1 / -1; }
    }
    @media (max-width: 520px) {
        .footer-grid { grid-template-columns: 1fr; }
        .footer-bottom { flex-direction: column; text-align: center; }
    }
    /* ===== Empty state ===== */
    .empty-state {
        text-align: center;
        padding: var(--space-lg) var(--space-md);
        color: var(--text-light);
    }
    .empty-state i { font-size: 2.4rem; margin-bottom: var(--space-sm); opacity: 0.5; }
    .empty-state p { font-size: 1rem; }
    /* ===== Breadcrumb ===== */
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 6px;
        font-size: 0.85rem;
        color: var(--text-light);
        margin-bottom: var(--space-sm);
        flex-wrap: wrap;
    }
    .breadcrumb a { color: var(--text-light); }
    .breadcrumb a:hover { color: var(--accent); }
    .breadcrumb .sep { color: var(--border); }
    /* ===== Page Header Inner ===== */
    .page-header {
        background: var(--bg-dark);
        padding: 120px 0 60px;
        position: relative;
    }
    .page-header-bg {
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-3.png');
        background-size: cover;
        background-position: center;
        opacity: 0.20;
    }
    .page-header .container { position: relative; z-index: 2; }
    .page-header h1 {
        font-size: 2.4rem;
        font-weight: 800;
        color: #fff;
        margin-bottom: 8px;
    }
    .page-header p {
        font-size: 1.05rem;
        color: rgba(255,255,255,0.65);
        max-width: 600px;
    }
    @media (max-width: 768px) {
        .page-header { padding: 100px 0 40px; }
        .page-header h1 { font-size: 1.8rem; }
    }
    /* ===== Scroll to top ===== */
    .scroll-top {
        position: fixed;
        bottom: 30px;
        right: 30px;
        width: 48px;
        height: 48px;
        background: var(--accent);
        color: #fff;
        border: none;
        border-radius: 50%;
        font-size: 1.2rem;
        cursor: pointer;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
        opacity: 0;
        transform: translateY(20px);
        pointer-events: none;
        z-index: 999;
    }
    .scroll-top.visible {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }
    .scroll-top:hover {
        background: var(--accent-dark);
        transform: translateY(-4px);
    }
    /* ===== Misc ===== */
    .text-center { text-align: center; }
    .mt-sm { margin-top: var(--space-sm); }
    .mt-md { margin-top: var(--space-md); }
    .mt-lg { margin-top: var(--space-lg); }
    .gap-sm { gap: var(--space-sm); }
    .gap-md { gap: var(--space-md); }
    .flex-center { display: flex; align-items: center; justify-content: center; }
    .flex-wrap { flex-wrap: wrap; }
    .w-full { width: 100%; }
    .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0,0,0,0);
        border: 0;
    }
    /* ===== Focus ===== */
    a:focus-visible, button:focus-visible, input:focus-visible {
        outline: 3px solid var(--accent);
        outline-offset: 2px;
        border-radius: 4px;
    }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-dark: #0d1b2a;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8a8aaa;
            --text-light: #f0f0f0;
            --border-color: #e8e8f0;
            --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 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 50px rgba(0, 0, 0, 0.14);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-w: 1200px;
            --header-h: 72px;
            --gap: 32px;
            --gap-lg: 48px;
        }

        /* ===== 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: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            padding-top: var(--header-h);
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        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(--container-w);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 26px;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            color: var(--text-primary);
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-light);
            padding: 4px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }
        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-tabs a i {
            font-size: 14px;
        }
        .nav-tabs a:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }
        .nav-tabs a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.30);
        }
        .nav-tabs a.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            background: var(--secondary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            flex-shrink: 0;
        }
        .nav-cta:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.30);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-primary);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }
        .mobile-toggle:hover {
            background: var(--bg-light);
        }

        /* ===== Hero (分类页横幅) ===== */
        .category-hero {
            position: relative;
            padding: 80px 0 72px;
            background: var(--bg-dark);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.30;
            z-index: 0;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.92) 0%, rgba(29, 53, 87, 0.70) 100%);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
        }
        .category-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .category-hero .breadcrumb a:hover {
            color: #fff;
        }
        .category-hero .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -1px;
            line-height: 1.2;
        }
        .category-hero h1 i {
            color: var(--primary-light);
            margin-right: 12px;
        }
        .category-hero .hero-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            line-height: 1.7;
        }
        .category-hero .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 28px;
            flex-wrap: wrap;
        }
        .category-hero .hero-stats .stat-item {
            text-align: left;
        }
        .category-hero .hero-stats .stat-num {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .category-hero .hero-stats .stat-num span {
            color: var(--accent);
        }
        .category-hero .hero-stats .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 2px;
        }

        /* ===== 分类筛选标签 ===== */
        .filter-bar {
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
            position: sticky;
            top: var(--header-h);
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .filter-bar .container {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .filter-bar .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-right: 4px;
        }
        .filter-bar .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .filter-bar .tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            background: var(--bg-light);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: var(--transition);
        }
        .filter-bar .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(230, 57, 70, 0.04);
        }
        .filter-bar .tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.25);
        }

        /* ===== 文章卡片网格 ===== */
        .section-news {
            padding: 60px 0 80px;
        }
        .section-news .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 36px;
            flex-wrap: wrap;
            gap: 16px;
        }
        .section-news .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
        }
        .section-news .section-header h2 i {
            color: var(--primary);
            margin-right: 10px;
        }
        .section-news .section-header .view-all {
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .section-news .section-header .view-all:hover {
            color: var(--primary);
            gap: 10px;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .news-card .card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-light);
        }
        .news-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .card-img img {
            transform: scale(1.05);
        }
        .news-card .card-img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }
        .news-card .card-img .badge.hot {
            background: #f77f00;
        }
        .news-card .card-img .badge.exclusive {
            background: var(--secondary);
        }
        .news-card .card-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .news-card .card-meta i {
            margin-right: 4px;
        }
        .news-card .card-meta .cate-tag {
            color: var(--primary);
            font-weight: 600;
        }
        .news-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .card-title a {
            color: inherit;
        }
        .news-card .card-title a:hover {
            color: var(--primary);
        }
        .news-card .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: 16px;
            flex: 1;
        }
        .news-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
        }
        .news-card .card-footer .read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .news-card .card-footer .read-more:hover {
            gap: 10px;
            color: var(--primary-dark);
        }
        .news-card .card-footer .like-count {
            font-size: 13px;
            color: var(--text-muted);
        }
        .news-card .card-footer .like-count i {
            margin-right: 4px;
            color: var(--primary-light);
        }

        /* ===== 特色专题 ===== */
        .section-featured {
            padding: 60px 0;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .section-featured::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .section-featured .container {
            position: relative;
            z-index: 1;
        }
        .section-featured .section-header h2 {
            color: #fff;
        }
        .section-featured .section-header h2 i {
            color: var(--accent);
        }
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .featured-card {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            border: 1px solid rgba(255, 255, 255, 0.10);
            transition: var(--transition);
            color: #fff;
        }
        .featured-card:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.20);
        }
        .featured-card .fc-icon {
            font-size: 36px;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .featured-card h3 {
            font-size: 20px;
            color: #fff;
            margin-bottom: 10px;
        }
        .featured-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .featured-card .fc-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-weight: 600;
            font-size: 14px;
        }
        .featured-card .fc-link:hover {
            color: #fff;
            gap: 10px;
        }

        /* ===== 热门排行 ===== */
        .section-rank {
            padding: 60px 0 80px;
            background: #fff;
        }
        .section-rank .section-header h2 i {
            color: var(--accent);
        }
        .rank-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 18px 22px;
            background: var(--bg-light);
            border-radius: var(--radius-md);
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .rank-item:hover {
            background: #fff;
            border-color: var(--border-color);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .rank-item .rank-num {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            min-width: 36px;
            text-align: center;
            line-height: 1;
        }
        .rank-item .rank-num.gold {
            color: #f4a261;
        }
        .rank-item .rank-num.silver {
            color: #8a8aaa;
        }
        .rank-item .rank-num.bronze {
            color: #cd7f32;
        }
        .rank-item .rank-info {
            flex: 1;
        }
        .rank-item .rank-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 2px;
        }
        .rank-item .rank-info .rank-desc {
            font-size: 13px;
            color: var(--text-muted);
        }
        .rank-item .rank-tag {
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            flex-shrink: 0;
        }
        .rank-item .rank-tag.hot {
            background: rgba(247, 127, 0, 0.12);
            color: #d96e00;
        }

        /* ===== 赛事日历 ===== */
        .section-calendar {
            padding: 60px 0;
            background: var(--bg-light);
        }
        .section-calendar .section-header h2 i {
            color: var(--secondary);
        }
        .cal-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .cal-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .cal-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .cal-card .cal-date {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .cal-card .cal-event {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .cal-card .cal-location {
            font-size: 13px;
            color: var(--text-muted);
        }
        .cal-card .cal-badge {
            display: inline-block;
            margin-top: 12px;
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(69, 123, 157, 0.10);
            color: var(--secondary-light);
        }
        .cal-card .cal-badge.live {
            background: rgba(230, 57, 70, 0.10);
            color: var(--primary);
        }

        /* ===== CTA ===== */
        .section-cta {
            padding: 72px 0;
            background: var(--secondary);
            position: relative;
            overflow: hidden;
        }
        .section-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.10;
            z-index: 0;
        }
        .section-cta .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .section-cta h2 {
            font-size: 34px;
            color: #fff;
            margin-bottom: 14px;
            font-weight: 800;
        }
        .section-cta p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.80);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .section-cta .cta-btns {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .section-cta .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 700;
            font-size: 16px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .section-cta .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(230, 57, 70, 0.35);
            color: #fff;
        }
        .section-cta .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.40);
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition);
        }
        .section-cta .btn-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
        }
        .site-footer .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);
        }
        .site-footer .footer-brand .logo {
            color: #fff;
            font-size: 22px;
            margin-bottom: 14px;
        }
        .site-footer .footer-brand .logo i {
            color: var(--primary-light);
        }
        .site-footer .footer-brand .logo span {
            background: none;
            -webkit-text-fill-color: #fff;
            color: #fff;
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 340px;
        }
        .site-footer .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.60);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary-light);
            transform: translateX(4px);
        }
        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.40);
            flex-wrap: wrap;
            gap: 12px;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cal-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 820px) {
            .nav-tabs {
                gap: 4px;
                padding: 3px;
            }
            .nav-tabs a {
                padding: 6px 14px;
                font-size: 13px;
            }
            .nav-tabs a i {
                font-size: 12px;
            }
            .nav-cta {
                padding: 8px 18px;
                font-size: 13px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .category-hero .hero-desc {
                font-size: 16px;
            }
            .category-hero .hero-stats {
                gap: 24px;
            }
            .category-hero .hero-stats .stat-num {
                font-size: 26px;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .rank-list {
                grid-template-columns: 1fr;
            }
            .section-cta h2 {
                font-size: 28px;
            }
        }
        @media (max-width: 640px) {
            body {
                padding-top: 64px;
            }
            :root {
                --header-h: 64px;
            }
            .header-inner {
                padding: 0 14px;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-tabs {
                display: none;
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 12px 16px;
                border-radius: 0;
                border: none;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                gap: 6px;
                z-index: 999;
            }
            .nav-tabs.open {
                display: flex;
            }
            .nav-tabs a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 15px;
            }
            .nav-tabs a i {
                font-size: 16px;
                width: 20px;
            }
            .nav-cta {
                display: none;
            }
            .category-hero {
                padding: 48px 0 40px;
                min-height: 240px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero .hero-desc {
                font-size: 14px;
            }
            .category-hero .hero-stats {
                gap: 16px;
                margin-top: 18px;
            }
            .category-hero .hero-stats .stat-num {
                font-size: 22px;
            }
            .filter-bar {
                padding: 12px 0;
            }
            .filter-bar .tag {
                padding: 4px 14px;
                font-size: 12px;
            }
            .section-news {
                padding: 40px 0 48px;
            }
            .section-news .section-header h2 {
                font-size: 22px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .news-card .card-body {
                padding: 16px 18px 18px;
            }
            .news-card .card-title {
                font-size: 16px;
            }
            .section-featured {
                padding: 40px 0;
            }
            .featured-card {
                padding: 24px 20px;
            }
            .section-rank {
                padding: 40px 0 48px;
            }
            .rank-item {
                padding: 14px 16px;
                gap: 12px;
            }
            .rank-item .rank-num {
                font-size: 20px;
                min-width: 28px;
            }
            .cal-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .cal-card {
                padding: 18px 14px;
            }
            .section-cta {
                padding: 48px 0;
            }
            .section-cta h2 {
                font-size: 24px;
            }
            .section-cta p {
                font-size: 15px;
            }
            .section-cta .btn-primary,
            .section-cta .btn-outline {
                padding: 12px 28px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 420px) {
            .category-hero h1 {
                font-size: 22px;
            }
            .category-hero .hero-stats .stat-item {
                flex: 1 1 40%;
            }
            .cal-grid {
                grid-template-columns: 1fr;
            }
            .filter-bar .container {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-bar .tag-group {
                justify-content: center;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e3c72;
            --primary-light: #2a5298;
            --primary-dark: #0f264a;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #06b6d4;
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0b1a2e;
            --text-primary: #0f172a;
            --text-body: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --text-white: #f1f5f9;
            --border-color: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
            --shadow-lg: 0 20px 48px rgba(0,0,0,0.10), 0 8px 24px rgba(0,0,0,0.06);
            --shadow-xl: 0 32px 64px rgba(0,0,0,0.14);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
            --nav-chip-gap: 6px;
        }

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

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== Header / Nav (分段标签导航) ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
            transition: opacity var(--transition);
        }
        .logo i { font-size: 1.5rem; color: var(--secondary); }
        .logo:hover { opacity: 0.85; color: var(--primary); }
        .logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: var(--nav-chip-gap);
            background: var(--bg-light);
            padding: 4px;
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-color);
            flex-wrap: wrap;
        }
        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-lg);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            background: transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-tabs a i { font-size: 0.95rem; }
        .nav-tabs a:hover { color: var(--primary); background: rgba(30,60,114,0.06); }
        .nav-tabs a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(30,60,114,0.25);
        }
        .nav-tabs a.active i { color: var(--secondary-light); }

        /* 移动端导航折叠 */
        .nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--primary); cursor: pointer; padding: 6px; border-radius: 8px; transition: background var(--transition); }
        .nav-toggle:hover { background: var(--border-light); }
        @media (max-width: 820px) {
            .nav-toggle { display: block; }
            .nav-tabs {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 16px;
                right: 16px;
                background: var(--bg-card);
                border: 1px solid var(--border-color);
                border-radius: var(--radius-md);
                padding: 8px;
                flex-direction: column;
                align-items: stretch;
                box-shadow: var(--shadow-lg);
                z-index: 99;
            }
            .nav-tabs.open { display: flex; }
            .nav-tabs a { padding: 12px 16px; border-radius: var(--radius-sm); justify-content: flex-start; }
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 60px 0 48px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-dark) 100%);
            overflow: hidden;
            min-height: 240px;
            display: flex;
            align-items: center;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .article-hero .breadcrumb {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-hero .breadcrumb a { color: var(--secondary-light); }
        .article-hero .breadcrumb a:hover { color: var(--secondary); }
        .article-hero .breadcrumb span { color: var(--text-light); }
        .article-hero h1 {
            font-size: clamp(1.6rem, 4.4vw, 2.8rem);
            color: var(--text-white);
            max-width: 880px;
            margin: 0 auto 16px;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
        }
        .article-hero .meta {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .article-hero .meta i { margin-right: 5px; color: var(--secondary); }
        .article-hero .meta .category-badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            background: rgba(245,158,11,0.18);
            color: var(--secondary-light);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        /* ===== Article Content ===== */
        .article-section {
            padding: 56px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
        }

        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-body .content h2,
        .article-body .content h3,
        .article-body .content h4 {
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            color: var(--text-primary);
        }
        .article-body .content p {
            margin-bottom: 1.2em;
        }
        .article-body .content ul,
        .article-body .content ol {
            margin-bottom: 1.2em;
            padding-left: 1.6em;
        }
        .article-body .content li {
            margin-bottom: 0.4em;
            list-style: disc;
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--secondary);
            padding: 12px 20px;
            background: rgba(245,158,11,0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5em 0;
            color: var(--text-body);
        }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 1.8em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content a { text-decoration: underline; text-underline-offset: 2px; }

        .article-body .content-empty {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
        }
        .article-body .content-empty i { font-size: 3rem; color: var(--border-color); margin-bottom: 16px; display: block; }
        .article-body .content-empty a { display: inline-block; margin-top: 16px; padding: 10px 28px; background: var(--primary); color: #fff; border-radius: var(--radius-md); text-decoration: none; }
        .article-body .content-empty a:hover { background: var(--primary-light); }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i { color: var(--secondary); }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: var(--text-body);
            font-size: 0.92rem;
            transition: color var(--transition);
        }
        .sidebar-list a:hover { color: var(--primary); }
        .sidebar-list .thumb {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--border-light);
        }
        .sidebar-list .info { flex: 1; min-width: 0; }
        .sidebar-list .info .title { font-weight: 600; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .sidebar-list .info .date { font-size: 0.78rem; color: var(--text-muted); margin-top: 4px; }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags a {
            padding: 5px 14px;
            border-radius: 30px;
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .sidebar-tags a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--text-white);
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius-md);
        }
        .sidebar-cta h4 { color: #fff; font-size: 1.15rem; margin-bottom: 8px; }
        .sidebar-cta p { font-size: 0.9rem; color: rgba(255,255,255,0.75); margin-bottom: 16px; }
        .sidebar-cta .btn-ghost {
            display: inline-block;
            padding: 10px 28px;
            border: 2px solid rgba(255,255,255,0.5);
            border-radius: var(--radius-md);
            color: #fff;
            font-weight: 600;
            transition: all var(--transition);
        }
        .sidebar-cta .btn-ghost:hover { background: rgba(255,255,255,0.15); border-color: #fff; }

        /* ===== Related / 相关推荐 ===== */
        .related-section {
            padding: 48px 0 72px;
            background: var(--bg-light);
        }
        .related-section h2 {
            font-size: 1.6rem;
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-section h2 i { color: var(--secondary); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            background: var(--border-light);
        }
        .related-card .card-body {
            padding: 18px 20px 22px;
        }
        .related-card .card-body h3 {
            font-size: 1rem;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h3 a { color: var(--text-primary); }
        .related-card .card-body h3 a:hover { color: var(--primary); }
        .related-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 10px;
        }
        .related-card .card-body .meta-info {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.78rem;
            color: var(--text-light);
        }
        .related-card .card-body .meta-info .tag {
            background: var(--bg-light);
            padding: 2px 10px;
            border-radius: 20px;
            color: var(--text-muted);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 56px 0 28px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        @media (max-width: 820px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        }
        .footer-brand .logo { color: var(--text-white); margin-bottom: 12px; }
        .footer-brand .logo i { color: var(--secondary); }
        .footer-brand .logo span { -webkit-text-fill-color: #fff; background: none; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: var(--text-light); max-width: 320px; }
        .footer-col h4 { color: var(--text-white); font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul a {
            color: var(--text-light);
            font-size: 0.9rem;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul a:hover { color: var(--secondary); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a { color: var(--text-light); }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== Utility & Responsive ===== */
        @media (max-width: 768px) {
            .article-body { padding: 24px 18px; }
            .article-hero { padding: 40px 0 32px; min-height: 200px; }
            .article-hero h1 { font-size: 1.5rem; }
            .sidebar-card { padding: 20px 16px; }
        }
        @media (max-width: 520px) {
            .article-body { padding: 18px 14px; }
            .article-hero h1 { font-size: 1.3rem; }
            .related-grid { grid-template-columns: 1fr; }
            .nav-tabs a { font-size: 0.8rem; padding: 6px 14px; }
            .logo { font-size: 1.1rem; }
            .logo i { font-size: 1.2rem; }
        }

        /* 辅助：点击状态反馈 */
        .nav-tabs a:active { transform: scale(0.96); }
        .btn-ghost:active { transform: scale(0.96); }
        .related-card:active { transform: scale(0.98); }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
    :root {
        --primary: #e63946;
        --primary-dark: #c1121f;
        --primary-light: #ff6b6b;
        --secondary: #1d3557;
        --secondary-light: #457b9d;
        --accent: #f4a261;
        --bg-light: #f8f9fa;
        --bg-white: #ffffff;
        --bg-dark: #1d3557;
        --text-dark: #1a1a2e;
        --text-body: #333333;
        --text-muted: #6c757d;
        --text-light: #f8f9fa;
        --border-color: #e0e0e0;
        --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 12px 40px rgba(0,0,0,0.14);
        --shadow-hover: 0 16px 48px rgba(0,0,0,0.18);
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
        --max-width: 1200px;
        --header-height: 72px;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
    body {
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-body);
        background: var(--bg-light);
        -webkit-font-smoothing: antialiased;
    }
    a { color: var(--primary); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-dark); }
    a:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { color: var(--text-dark); line-height: 1.3; font-weight: 700; }
    h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
    h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); margin-bottom: 1rem; }
    h3 { font-size: 1.25rem; }
    p { margin-bottom: 1rem; color: var(--text-body); }
    .container {
        width: 100%;
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== Button ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 28px;
        border-radius: var(--radius-md);
        font-weight: 600;
        font-size: 1rem;
        border: none;
        cursor: pointer;
        transition: var(--transition);
        text-decoration: none;
        line-height: 1.4;
    }
    .btn-primary {
        background: var(--primary);
        color: #fff;
    }
    .btn-primary:hover {
        background: var(--primary-dark);
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
        color: #fff;
    }
    .btn-secondary {
        background: var(--secondary);
        color: #fff;
    }
    .btn-secondary:hover {
        background: #15273f;
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
        color: #fff;
    }
    .btn-outline {
        background: transparent;
        color: var(--primary);
        border: 2px solid var(--primary);
    }
    .btn-outline:hover {
        background: var(--primary);
        color: #fff;
        transform: translateY(-2px);
    }
    .btn-lg { padding: 16px 36px; font-size: 1.1rem; border-radius: var(--radius-lg); }
    .btn-sm { padding: 8px 18px; font-size: 0.875rem; border-radius: var(--radius-sm); }
    .btn:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; }

    /* ===== Badge / Tag ===== */
    .badge {
        display: inline-block;
        padding: 4px 14px;
        border-radius: 50px;
        font-size: 0.8rem;
        font-weight: 600;
        background: var(--primary);
        color: #fff;
    }
    .badge-secondary { background: var(--secondary); }
    .badge-accent { background: var(--accent); color: #1a1a2e; }
    .badge-outline {
        background: transparent;
        border: 1.5px solid var(--primary);
        color: var(--primary);
    }
    .tag {
        display: inline-block;
        padding: 3px 12px;
        border-radius: 50px;
        font-size: 0.75rem;
        font-weight: 500;
        background: var(--bg-light);
        color: var(--text-muted);
        border: 1px solid var(--border-color);
        transition: var(--transition);
    }
    .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

    /* ===== Header & Nav ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(255,255,255,0.97);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-sm);
        height: var(--header-height);
        display: flex;
        align-items: center;
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
        gap: 16px;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.4rem;
        font-weight: 800;
        color: var(--secondary);
        text-decoration: none;
        white-space: nowrap;
    }
    .logo i { color: var(--primary); font-size: 1.6rem; }
    .logo span { background: linear-gradient(135deg, var(--secondary), var(--primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .logo:hover { opacity: 0.9; }
    .nav-tabs {
        display: flex;
        align-items: center;
        gap: 4px;
        background: var(--bg-light);
        border-radius: var(--radius-lg);
        padding: 4px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .nav-tabs::-webkit-scrollbar { display: none; }
    .nav-tabs a {
        display: flex;
        align-items: center;
        gap: 6px;
        padding: 8px 18px;
        border-radius: var(--radius-md);
        font-weight: 600;
        font-size: 0.9rem;
        color: var(--text-muted);
        text-decoration: none;
        white-space: nowrap;
        transition: var(--transition);
    }
    .nav-tabs a i { font-size: 0.9rem; }
    .nav-tabs a:hover { color: var(--text-dark); background: rgba(230,57,70,0.06); }
    .nav-tabs a.active {
        background: var(--bg-white);
        color: var(--primary);
        box-shadow: var(--shadow-sm);
    }
    .nav-tabs a.active i { color: var(--primary); }
    .nav-cta { display: flex; align-items: center; gap: 12px; }
    .nav-cta .btn { padding: 8px 20px; font-size: 0.85rem; }
    .mobile-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text-dark); cursor: pointer; padding: 4px; }

    /* ===== Hero / Banner ===== */
    .page-hero {
        position: relative;
        min-height: 320px;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        padding: 80px 24px 60px;
        background: linear-gradient(135deg, var(--secondary) 0%, #0d1b2a 100%);
        overflow: hidden;
    }
    .page-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        opacity: 0.2;
        mix-blend-mode: overlay;
    }
    .page-hero .hero-content {
        position: relative;
        z-index: 2;
        max-width: 800px;
    }
    .page-hero h1 {
        color: #fff;
        font-size: clamp(2.2rem, 5.5vw, 3.6rem);
        margin-bottom: 0.6rem;
        text-shadow: 0 2px 20px rgba(0,0,0,0.3);
    }
    .page-hero p {
        color: rgba(255,255,255,0.85);
        font-size: 1.15rem;
        max-width: 640px;
        margin: 0 auto 1.5rem;
    }
    .page-hero .badge {
        background: rgba(255,255,255,0.15);
        color: #fff;
        backdrop-filter: blur(4px);
        margin-bottom: 1rem;
    }
    .hero-meta { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; margin-top: 1rem; }
    .hero-meta span { color: rgba(255,255,255,0.75); font-size: 0.9rem; display: flex; align-items: center; gap: 6px; }

    /* ===== Section ===== */
    .section { padding: 70px 0; }
    .section-alt { background: var(--bg-white); }
    .section-dark { background: var(--bg-dark); color: var(--text-light); }
    .section-dark h2, .section-dark h3, .section-dark p { color: var(--text-light); }
    .section-title {
        text-align: center;
        margin-bottom: 3rem;
    }
    .section-title h2 { position: relative; display: inline-block; }
    .section-title h2::after {
        content: '';
        display: block;
        width: 60px;
        height: 4px;
        background: var(--primary);
        border-radius: 4px;
        margin: 12px auto 0;
    }
    .section-title p { color: var(--text-muted); max-width: 600px; margin: 0.8rem auto 0; font-size: 1.05rem; }

    /* ===== Card Grid ===== */
    .card-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 28px;
    }
    .card {
        background: var(--bg-white);
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        border: 1px solid var(--border-color);
        display: flex;
        flex-direction: column;
    }
    .card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-hover);
    }
    .card-img {
        width: 100%;
        height: 200px;
        object-fit: cover;
        border-radius: 0;
    }
    .card-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
    .card-body h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
    .card-body h3 a { color: var(--text-dark); }
    .card-body h3 a:hover { color: var(--primary); }
    .card-body p { font-size: 0.95rem; color: var(--text-muted); flex: 1; }
    .card-meta { display: flex; align-items: center; gap: 12px; margin-top: 1rem; font-size: 0.85rem; color: var(--text-muted); }
    .card-meta i { width: 16px; }
    .card-footer { padding: 14px 22px; border-top: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; background: var(--bg-light); }
    .card-footer .tag { font-size: 0.7rem; }

    /* ===== Guide Categories ===== */
    .guide-cats {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        justify-content: center;
        margin-bottom: 2.5rem;
    }
    .guide-cats .cat-chip {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 10px 22px;
        border-radius: 50px;
        background: var(--bg-white);
        border: 1.5px solid var(--border-color);
        font-weight: 600;
        font-size: 0.9rem;
        color: var(--text-body);
        cursor: pointer;
        transition: var(--transition);
        box-shadow: var(--shadow-sm);
    }
    .guide-cats .cat-chip:hover, .guide-cats .cat-chip.active {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }
    .guide-cats .cat-chip i { font-size: 1rem; }

    /* ===== Step / Process ===== */
    .step-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 24px;
        counter-reset: step;
    }
    .step-card {
        background: var(--bg-white);
        border-radius: var(--radius-lg);
        padding: 32px 24px;
        text-align: center;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-color);
        transition: var(--transition);
        position: relative;
    }
    .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
    .step-card::before {
        counter-increment: step;
        content: counter(step);
        position: absolute;
        top: -14px;
        left: 50%;
        transform: translateX(-50%);
        width: 32px;
        height: 32px;
        border-radius: 50%;
        background: var(--primary);
        color: #fff;
        font-weight: 800;
        font-size: 0.9rem;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 4px 12px rgba(230,57,70,0.3);
    }
    .step-card .step-icon { font-size: 2.4rem; color: var(--primary); margin-bottom: 1rem; }
    .step-card h4 { font-size: 1.05rem; margin-bottom: 0.5rem; }
    .step-card p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }

    /* ===== FAQ ===== */
    .faq-list { max-width: 800px; margin: 0 auto; }
    .faq-item {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        border: 1px solid var(--border-color);
        margin-bottom: 12px;
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover { box-shadow: var(--shadow-sm); }
    .faq-question {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 18px 24px;
        font-weight: 600;
        font-size: 1.02rem;
        color: var(--text-dark);
        cursor: pointer;
        background: none;
        border: none;
        width: 100%;
        text-align: left;
        transition: var(--transition);
        gap: 12px;
    }
    .faq-question i { color: var(--primary); transition: var(--transition); font-size: 1.1rem; }
    .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
    .faq-question:hover { background: var(--bg-light); }
    .faq-answer {
        padding: 0 24px 18px;
        color: var(--text-muted);
        font-size: 0.95rem;
        line-height: 1.7;
        display: none;
    }
    .faq-answer.open { display: block; }
    .faq-answer p:last-child { margin-bottom: 0; }

    /* ===== CTA ===== */
    .cta-block {
        background: linear-gradient(135deg, var(--secondary) 0%, #0d1b2a 100%);
        border-radius: var(--radius-xl);
        padding: 60px 40px;
        text-align: center;
        position: relative;
        overflow: hidden;
    }
    .cta-block::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
        opacity: 0.08;
        mix-blend-mode: overlay;
    }
    .cta-block h2 { color: #fff; font-size: clamp(1.5rem, 3vw, 2.2rem); position: relative; z-index: 1; }
    .cta-block p { color: rgba(255,255,255,0.8); max-width: 560px; margin: 0.8rem auto 1.8rem; position: relative; z-index: 1; }
    .cta-block .btn { position: relative; z-index: 1; }

    /* ===== Expert Tips ===== */
    .expert-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: 24px;
    }
    .expert-card {
        background: var(--bg-white);
        border-radius: var(--radius-lg);
        padding: 28px 24px;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-color);
        transition: var(--transition);
        position: relative;
        border-left: 4px solid var(--primary);
    }
    .expert-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
    .expert-card .expert-icon { font-size: 1.8rem; color: var(--primary); margin-bottom: 0.8rem; }
    .expert-card h4 { font-size: 1.05rem; margin-bottom: 0.4rem; }
    .expert-card p { font-size: 0.92rem; color: var(--text-muted); margin: 0; }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--bg-dark);
        color: rgba(255,255,255,0.8);
        padding: 60px 0 0;
    }
    .site-footer a { color: rgba(255,255,255,0.7); }
    .site-footer a:hover { color: var(--primary-light); }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 40px;
    }
    .footer-brand .logo { color: #fff; margin-bottom: 0.8rem; }
    .footer-brand .logo span { -webkit-text-fill-color: #fff; background: none; }
    .footer-brand .logo i { color: var(--primary-light); }
    .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.6); max-width: 320px; }
    .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 1.2rem; }
    .footer-col ul li { margin-bottom: 0.6rem; }
    .footer-col ul li a { font-size: 0.9rem; display: flex; align-items: center; gap: 8px; }
    .footer-col ul li a i { width: 18px; }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.1);
        padding: 20px 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 0.85rem;
        color: rgba(255,255,255,0.5);
    }
    .footer-bottom a { color: rgba(255,255,255,0.6); }
    .footer-bottom a:hover { color: var(--primary-light); }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .footer-grid { grid-template-columns: 1fr 1fr; }
        .card-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
    }
    @media (max-width: 768px) {
        .mobile-toggle { display: block; }
        .nav-tabs {
            display: none;
            position: absolute;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: var(--bg-white);
            flex-direction: column;
            border-radius: 0;
            box-shadow: var(--shadow-lg);
            padding: 12px;
            border-bottom: 2px solid var(--primary);
            z-index: 999;
        }
        .nav-tabs.open { display: flex; }
        .nav-tabs a { padding: 12px 18px; width: 100%; justify-content: center; }
        .nav-cta .btn { padding: 6px 14px; font-size: 0.8rem; }
        .nav-cta .btn span { display: none; }
        .page-hero { min-height: 240px; padding: 60px 20px 40px; }
        .section { padding: 50px 0; }
        .card-grid { grid-template-columns: 1fr; }
        .step-grid { grid-template-columns: 1fr 1fr; }
        .expert-grid { grid-template-columns: 1fr; }
        .footer-grid { grid-template-columns: 1fr; gap: 28px; }
        .footer-bottom { flex-direction: column; text-align: center; }
        .cta-block { padding: 40px 24px; }
        .guide-cats .cat-chip { padding: 8px 16px; font-size: 0.8rem; }
    }
    @media (max-width: 520px) {
        .header-inner { padding: 0 14px; gap: 8px; }
        .logo { font-size: 1.15rem; }
        .logo i { font-size: 1.2rem; }
        .nav-cta .btn { padding: 6px 12px; font-size: 0.75rem; }
        .page-hero h1 { font-size: 1.8rem; }
        .page-hero p { font-size: 0.95rem; }
        .step-grid { grid-template-columns: 1fr; }
        .hero-meta { flex-direction: column; align-items: center; gap: 8px; }
        .section-title h2 { font-size: 1.4rem; }
    }