/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --primary: #00d4ff;
        --primary-light: #66e5ff;
        --primary-dark: #0099cc;
        --accent: #ff6b35;
        --accent-light: #ff8a5c;
        --bg-deep: #080c14;
        --bg-card: #111827;
        --bg-card-hover: #1a2332;
        --bg-surface: #0d1520;
        --bg-nav: #0a0e17;
        --text-primary: #e8edf5;
        --text-secondary: #9aa8b9;
        --text-muted: #6b7b8f;
        --border-color: #1e2d45;
        --border-glow: rgba(0, 212, 255, 0.15);
        --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
        --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.08);
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        --max-width: 1240px;
        --header-h: 70px;
    }

    /* ===== 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);
        background: var(--bg-deep);
        color: var(--text-primary);
        line-height: 1.6;
        font-size: 16px;
        min-height: 100vh;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition);
    }
    a:hover {
        color: var(--primary-light);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
        border-radius: var(--radius-sm);
    }
    button,
    input,
    select,
    textarea {
        font-family: inherit;
        font-size: inherit;
        border: none;
        outline: none;
        background: transparent;
        color: inherit;
    }
    ul,
    ol {
        list-style: none;
    }

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

    /* ===== Header / Nav ===== */
    header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgba(10, 14, 23, 0.92);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        border-bottom: 1px solid var(--border-color);
        height: var(--header-h);
        transition: background var(--transition);
    }
    header.scrolled {
        background: rgba(8, 12, 20, 0.98);
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: var(--header-h);
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }
    .logo {
        font-size: 1.55rem;
        font-weight: 800;
        letter-spacing: -0.02em;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 80%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .logo i {
        font-size: 1.3rem;
        background: none;
        -webkit-text-fill-color: var(--primary);
        color: var(--primary);
    }
    .logo a {
        background: none;
        -webkit-text-fill-color: transparent;
        color: transparent;
    }
    .logo a:hover {
        opacity: 0.9;
    }
    .nav-links {
        display: flex;
        align-items: center;
        gap: 4px;
    }
    .nav-links a {
        padding: 8px 18px;
        border-radius: var(--radius-sm);
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--text-secondary);
        transition: all var(--transition);
        position: relative;
        white-space: nowrap;
    }
    .nav-links a:hover {
        color: var(--text-primary);
        background: rgba(255, 255, 255, 0.04);
    }
    .nav-links a.active {
        color: var(--primary);
        background: rgba(0, 212, 255, 0.08);
        box-shadow: inset 0 -2px 0 var(--primary);
    }
    .nav-links a.active i {
        color: var(--primary);
    }
    .nav-links a i {
        margin-right: 6px;
        font-size: 0.8rem;
        color: var(--text-muted);
    }
    .nav-cta {
        background: linear-gradient(135deg, var(--primary-dark), var(--primary)) !important;
        color: #fff !important;
        padding: 8px 22px !important;
        border-radius: var(--radius-sm) !important;
        font-weight: 600 !important;
        box-shadow: 0 0 20px rgba(0, 212, 255, 0.15);
        transition: all var(--transition) !important;
    }
    .nav-cta:hover {
        transform: translateY(-1px);
        box-shadow: 0 0 30px rgba(0, 212, 255, 0.3) !important;
        color: #fff !important;
        background: linear-gradient(135deg, var(--primary), var(--primary-light)) !important;
    }
    .nav-toggle {
        display: none;
        background: none;
        border: none;
        font-size: 1.6rem;
        color: var(--text-primary);
        cursor: pointer;
        padding: 4px 8px;
    }
    @media (max-width: 820px) {
        .nav-links {
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: rgba(10, 14, 23, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            flex-direction: column;
            padding: 16px 20px 28px;
            gap: 4px;
            border-bottom: 1px solid var(--border-color);
            transform: translateY(-110%);
            opacity: 0;
            visibility: hidden;
            transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
        }
        .nav-links.open {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }
        .nav-links a {
            padding: 12px 16px;
            font-size: 1rem;
            width: 100%;
            border-radius: var(--radius-sm);
        }
        .nav-links a.active {
            box-shadow: inset 2px 0 0 var(--primary);
        }
        .nav-cta {
            margin-top: 8px;
            text-align: center;
            width: 100%;
        }
        .nav-toggle {
            display: block;
        }
    }

    /* ===== Hero ===== */
    .hero {
        margin-top: var(--header-h);
        min-height: 88vh;
        display: flex;
        align-items: center;
        position: relative;
        background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        overflow: hidden;
    }
    .hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(8, 12, 20, 0.88) 30%, rgba(8, 12, 20, 0.55) 70%, rgba(8, 12, 20, 0.3) 100%);
        z-index: 1;
    }
    .hero::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 160px;
        background: linear-gradient(to top, var(--bg-deep), transparent);
        z-index: 2;
    }
    .hero .container {
        position: relative;
        z-index: 3;
        padding-top: 40px;
        padding-bottom: 60px;
        width: 100%;
    }
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(0, 212, 255, 0.12);
        border: 1px solid rgba(0, 212, 255, 0.2);
        padding: 6px 18px 6px 12px;
        border-radius: 40px;
        font-size: 0.8rem;
        color: var(--primary-light);
        margin-bottom: 24px;
        letter-spacing: 0.3px;
        backdrop-filter: blur(4px);
    }
    .hero-badge i {
        font-size: 0.7rem;
    }
    .hero h1 {
        font-size: clamp(2.6rem, 6vw, 4.2rem);
        font-weight: 900;
        line-height: 1.1;
        letter-spacing: -0.02em;
        max-width: 780px;
        margin-bottom: 20px;
    }
    .hero h1 span {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 70%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .hero p {
        font-size: 1.15rem;
        color: var(--text-secondary);
        max-width: 600px;
        line-height: 1.7;
        margin-bottom: 32px;
    }
    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
        align-items: center;
    }
    .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        background: linear-gradient(135deg, var(--primary-dark), var(--primary));
        color: #fff;
        padding: 14px 32px;
        border-radius: var(--radius-sm);
        font-weight: 600;
        font-size: 1rem;
        box-shadow: 0 0 30px rgba(0, 212, 255, 0.15);
        transition: all var(--transition);
        border: none;
        cursor: pointer;
    }
    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 0 45px rgba(0, 212, 255, 0.3);
        color: #fff;
    }
    .btn-secondary {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid var(--border-color);
        color: var(--text-primary);
        padding: 14px 30px;
        border-radius: var(--radius-sm);
        font-weight: 500;
        font-size: 1rem;
        transition: all var(--transition);
        cursor: pointer;
    }
    .btn-secondary:hover {
        background: rgba(255, 255, 255, 0.08);
        border-color: var(--primary);
        color: var(--primary);
    }
    .hero-stats {
        display: flex;
        flex-wrap: wrap;
        gap: 32px 48px;
        margin-top: 48px;
        padding-top: 32px;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
    }
    .hero-stat h3 {
        font-size: 2rem;
        font-weight: 800;
        color: var(--primary);
        line-height: 1.2;
    }
    .hero-stat p {
        font-size: 0.85rem;
        color: var(--text-muted);
        margin-bottom: 0;
    }
    @media (max-width: 768px) {
        .hero {
            min-height: 70vh;
        }
        .hero h1 {
            font-size: 2rem;
        }
        .hero p {
            font-size: 1rem;
        }
        .hero-stats {
            gap: 20px 32px;
        }
        .hero-stat h3 {
            font-size: 1.5rem;
        }
    }

    /* ===== Section通用 ===== */
    section {
        padding: 80px 0;
        position: relative;
    }
    .section-label {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 0.8rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 1.5px;
        color: var(--primary);
        margin-bottom: 12px;
    }
    .section-label::before {
        content: '';
        width: 24px;
        height: 2px;
        background: var(--primary);
        border-radius: 2px;
    }
    .section-title {
        font-size: clamp(1.8rem, 3.2vw, 2.6rem);
        font-weight: 800;
        letter-spacing: -0.01em;
        margin-bottom: 12px;
        line-height: 1.2;
    }
    .section-desc {
        color: var(--text-secondary);
        max-width: 640px;
        font-size: 1.05rem;
        line-height: 1.7;
        margin-bottom: 40px;
    }
    .section-desc.center {
        margin-left: auto;
        margin-right: auto;
        text-align: center;
    }
    .section-title.center {
        text-align: center;
    }
    .section-label.center {
        justify-content: center;
    }
    .section-label.center::before {
        display: none;
    }

    /* ===== 分类入口 ===== */
    .categories-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    .category-card {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        padding: 32px 28px;
        border: 1px solid var(--border-color);
        transition: all var(--transition);
        position: relative;
        overflow: hidden;
        display: flex;
        flex-direction: column;
    }
    .category-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: linear-gradient(90deg, var(--primary), var(--primary-light));
        opacity: 0;
        transition: opacity var(--transition);
    }
    .category-card:hover::before {
        opacity: 1;
    }
    .category-card:hover {
        border-color: rgba(0, 212, 255, 0.2);
        background: var(--bg-card-hover);
        transform: translateY(-3px);
        box-shadow: var(--shadow-glow);
    }
    .category-card .icon-wrap {
        width: 52px;
        height: 52px;
        border-radius: var(--radius-sm);
        background: rgba(0, 212, 255, 0.08);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        color: var(--primary);
        margin-bottom: 18px;
    }
    .category-card h3 {
        font-size: 1.2rem;
        font-weight: 700;
        margin-bottom: 8px;
    }
    .category-card p {
        font-size: 0.92rem;
        color: var(--text-secondary);
        line-height: 1.6;
        margin-bottom: 16px;
        flex: 1;
    }
    .category-card .tag-group {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
    }
    .tag {
        display: inline-block;
        padding: 4px 14px;
        border-radius: 40px;
        font-size: 0.75rem;
        font-weight: 500;
        background: rgba(255, 255, 255, 0.04);
        color: var(--text-secondary);
        border: 1px solid var(--border-color);
        transition: all var(--transition);
    }
    .tag:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: rgba(0, 212, 255, 0.06);
    }
    @media (max-width: 640px) {
        .categories-grid {
            grid-template-columns: 1fr;
        }
        .category-card {
            padding: 24px 20px;
        }
    }

    /* ===== 资讯列表 ===== */
    .news-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 24px;
    }
    .news-card {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        border: 1px solid var(--border-color);
        overflow: hidden;
        transition: all var(--transition);
        display: flex;
        flex-direction: column;
    }
    .news-card:hover {
        border-color: rgba(0, 212, 255, 0.2);
        transform: translateY(-3px);
        box-shadow: var(--shadow-glow);
    }
    .news-card .card-img {
        width: 100%;
        height: 190px;
        object-fit: cover;
        border-radius: 0;
        display: block;
        background: var(--bg-surface);
    }
    .news-card .card-body {
        padding: 20px 22px 22px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .news-card .card-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 0.8rem;
        color: var(--text-muted);
        margin-bottom: 10px;
    }
    .news-card .card-meta .cat {
        color: var(--primary);
        font-weight: 500;
        background: rgba(0, 212, 255, 0.08);
        padding: 2px 12px;
        border-radius: 20px;
    }
    .news-card .card-body h3 {
        font-size: 1.05rem;
        font-weight: 700;
        line-height: 1.4;
        margin-bottom: 8px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .news-card .card-body h3 a {
        color: var(--text-primary);
    }
    .news-card .card-body h3 a:hover {
        color: var(--primary);
    }
    .news-card .card-body p {
        font-size: 0.88rem;
        color: var(--text-secondary);
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 12px;
        flex: 1;
    }
    .news-card .card-foot {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-top: 12px;
        border-top: 1px solid rgba(255, 255, 255, 0.04);
        font-size: 0.82rem;
        color: var(--text-muted);
    }
    .news-card .card-foot a {
        font-weight: 500;
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }
    .empty-news {
        grid-column: 1 / -1;
        text-align: center;
        padding: 48px 20px;
        background: var(--bg-card);
        border-radius: var(--radius-md);
        border: 1px dashed var(--border-color);
        color: var(--text-muted);
        font-size: 1rem;
    }
    .empty-news i {
        font-size: 2.4rem;
        display: block;
        margin-bottom: 16px;
        color: var(--text-muted);
    }

    /* ===== 数据/流程 ===== */
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }
    .stat-item {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        padding: 28px 20px;
        text-align: center;
        border: 1px solid var(--border-color);
        transition: all var(--transition);
    }
    .stat-item:hover {
        border-color: rgba(0, 212, 255, 0.15);
        transform: translateY(-2px);
    }
    .stat-item .num {
        font-size: 2.4rem;
        font-weight: 900;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 80%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        line-height: 1.2;
    }
    .stat-item .label {
        font-size: 0.85rem;
        color: var(--text-secondary);
        margin-top: 6px;
    }
    .stat-item i {
        font-size: 1.6rem;
        color: var(--primary);
        margin-bottom: 12px;
        opacity: 0.7;
    }
    @media (max-width: 820px) {
        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    @media (max-width: 480px) {
        .stats-grid {
            grid-template-columns: 1fr;
        }
    }

    /* ===== 流程步骤 ===== */
    .steps-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        counter-reset: step;
    }
    .step-card {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        padding: 32px 28px;
        border: 1px solid var(--border-color);
        position: relative;
        transition: all var(--transition);
        counter-increment: step;
    }
    .step-card:hover {
        border-color: rgba(0, 212, 255, 0.15);
        transform: translateY(-3px);
        box-shadow: var(--shadow-glow);
    }
    .step-card .step-num {
        font-size: 2.8rem;
        font-weight: 900;
        color: rgba(0, 212, 255, 0.1);
        position: absolute;
        top: 16px;
        right: 20px;
        line-height: 1;
        font-family: monospace;
    }
    .step-card .step-icon {
        width: 48px;
        height: 48px;
        border-radius: var(--radius-sm);
        background: rgba(0, 212, 255, 0.08);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.4rem;
        color: var(--primary);
        margin-bottom: 16px;
    }
    .step-card h4 {
        font-size: 1.1rem;
        font-weight: 700;
        margin-bottom: 8px;
    }
    .step-card p {
        font-size: 0.9rem;
        color: var(--text-secondary);
        line-height: 1.6;
    }
    @media (max-width: 768px) {
        .steps-grid {
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .step-card {
            padding: 24px 20px;
        }
    }

    /* ===== FAQ ===== */
    .faq-list {
        max-width: 800px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .faq-item {
        background: var(--bg-card);
        border-radius: var(--radius-sm);
        border: 1px solid var(--border-color);
        overflow: hidden;
        transition: all var(--transition);
    }
    .faq-item:hover {
        border-color: rgba(0, 212, 255, 0.1);
    }
    .faq-q {
        padding: 18px 22px;
        font-weight: 600;
        font-size: 1rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
        cursor: pointer;
        user-select: none;
        transition: background var(--transition);
        gap: 12px;
    }
    .faq-q:hover {
        background: rgba(255, 255, 255, 0.02);
    }
    .faq-q i {
        font-size: 0.85rem;
        color: var(--text-muted);
        transition: transform var(--transition);
        flex-shrink: 0;
    }
    .faq-item.open .faq-q i {
        transform: rotate(180deg);
        color: var(--primary);
    }
    .faq-a {
        padding: 0 22px 18px;
        font-size: 0.92rem;
        color: var(--text-secondary);
        line-height: 1.7;
        display: none;
    }
    .faq-item.open .faq-a {
        display: block;
    }

    /* ===== CTA ===== */
    .cta-section {
        background: linear-gradient(135deg, rgba(0, 212, 255, 0.04), rgba(0, 212, 255, 0.01));
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
        text-align: center;
    }
    .cta-section h2 {
        font-size: clamp(1.6rem, 2.8vw, 2.2rem);
        font-weight: 800;
        margin-bottom: 12px;
    }
    .cta-section p {
        color: var(--text-secondary);
        max-width: 560px;
        margin: 0 auto 28px;
        font-size: 1.05rem;
    }
    .cta-actions {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 14px;
    }

    /* ===== Footer ===== */
    footer {
        background: var(--bg-nav);
        border-top: 1px solid var(--border-color);
        padding: 48px 0 32px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 32px;
        margin-bottom: 32px;
    }
    .footer-brand .logo {
        font-size: 1.3rem;
        margin-bottom: 10px;
    }
    .footer-brand p {
        font-size: 0.88rem;
        color: var(--text-secondary);
        max-width: 320px;
        line-height: 1.7;
    }
    footer h4 {
        font-size: 0.95rem;
        font-weight: 700;
        margin-bottom: 14px;
        color: var(--text-primary);
    }
    footer ul li {
        margin-bottom: 8px;
    }
    footer ul li a {
        font-size: 0.88rem;
        color: var(--text-secondary);
        transition: color var(--transition);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    footer ul li a:hover {
        color: var(--primary);
    }
    .footer-bottom {
        padding-top: 24px;
        border-top: 1px solid var(--border-color);
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        font-size: 0.82rem;
        color: var(--text-muted);
    }
    .footer-bottom a {
        color: var(--text-muted);
    }
    .footer-bottom a:hover {
        color: var(--primary);
    }
    .footer-social {
        display: flex;
        gap: 12px;
    }
    .footer-social a {
        width: 38px;
        height: 38px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.03);
        border: 1px solid var(--border-color);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-secondary);
        font-size: 1rem;
        transition: all var(--transition);
    }
    .footer-social a:hover {
        background: rgba(0, 212, 255, 0.1);
        border-color: var(--primary);
        color: var(--primary);
    }
    @media (max-width: 820px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
    }
    @media (max-width: 520px) {
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
    }

    /* ===== 通用辅助 ===== */
    .text-center {
        text-align: center;
    }
    .mt-8 {
        margin-top: 8px;
    }
    .mt-16 {
        margin-top: 16px;
    }
    .mt-24 {
        margin-top: 24px;
    }
    .mt-32 {
        margin-top: 32px;
    }
    .mb-16 {
        margin-bottom: 16px;
    }
    .mb-24 {
        margin-bottom: 24px;
    }
    .gap-8 {
        gap: 8px;
    }
    .gap-12 {
        gap: 12px;
    }
    .flex-wrap {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
    }
    .bg-surface {
        background: var(--bg-surface);
    }
    .border-top {
        border-top: 1px solid var(--border-color);
    }
    .border-bottom {
        border-bottom: 1px solid var(--border-color);
    }

    /* ===== 滚动条 ===== */
    ::-webkit-scrollbar {
        width: 6px;
        height: 6px;
    }
    ::-webkit-scrollbar-track {
        background: var(--bg-deep);
    }
    ::-webkit-scrollbar-thumb {
        background: var(--border-color);
        border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: var(--text-muted);
    }

    /* ===== 选中 ===== */
    ::selection {
        background: rgba(0, 212, 255, 0.25);
        color: #fff;
    }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --bg-primary: #0b0d17;
            --bg-secondary: #111527;
            --bg-card: #161b33;
            --bg-card-hover: #1c2242;
            --bg-elevated: #1e254a;
            --text-primary: #eef0f8;
            --text-secondary: #9aa0b8;
            --text-weak: #5d6380;
            --accent-primary: #6c5ce7;
            --accent-glow: rgba(108, 92, 231, 0.45);
            --accent-secondary: #00d2ff;
            --accent-warm: #fd79a8;
            --accent-gold: #fdcb6e;
            --border-color: rgba(108, 92, 231, 0.2);
            --border-hover: rgba(108, 92, 231, 0.5);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(108, 92, 231, 0.2);
            --transition: all 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-max: 1200px;
            --header-height: 72px;
        }

        /* ===== 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);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 1rem;
            min-height: 100vh;
        }
        a {
            color: var(--text-primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        ul {
            list-style: none;
        }
        ::selection {
            background: var(--accent-primary);
            color: #fff;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
        }

        /* ===== 导航 ===== */
        #header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(11, 13, 23, 0.88);
            backdrop-filter: blur(18px) saturate(1.4);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition);
        }
        #header:hover {
            border-bottom-color: var(--border-hover);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.02em;
        }
        .logo i {
            color: var(--accent-primary);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px var(--accent-glow));
        }
        .logo a {
            color: var(--text-primary);
            background: linear-gradient(135deg, #eef0f8, var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 7px;
            transition: var(--transition);
            position: relative;
        }
        .nav-links a i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .nav-links a:hover,
        .nav-links a:focus-visible {
            color: var(--text-primary);
            background: rgba(108, 92, 231, 0.1);
        }
        .nav-links a.active {
            color: var(--accent-primary);
            background: rgba(108, 92, 231, 0.12);
            box-shadow: inset 0 -2px 0 var(--accent-primary), 0 0 20px rgba(108, 92, 231, 0.08);
        }
        .nav-links a.active i {
            opacity: 1;
            color: var(--accent-primary);
        }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--accent-primary), #a29bfe);
            color: #fff;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
        }
        .nav-links a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(108, 92, 231, 0.45);
            color: #fff;
        }
        .nav-links a.nav-cta i {
            opacity: 1;
        }
        .nav-toggle {
            display: none;
            font-size: 1.6rem;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            color: var(--text-primary);
            background: rgba(108, 92, 231, 0.1);
        }

        @media (max-width: 820px) {
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: rgba(11, 13, 23, 0.97);
                backdrop-filter: blur(24px);
                flex-direction: column;
                padding: 20px 24px 30px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-110%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-links a {
                width: 100%;
                padding: 14px 18px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .nav-links a.nav-cta {
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }
            .nav-toggle {
                display: block;
            }
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            margin-top: var(--header-height);
            padding: 80px 0 64px;
            background: linear-gradient(135deg, rgba(11, 13, 23, 0.92), rgba(17, 21, 39, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border-color);
            position: relative;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-primary), transparent);
            pointer-events: none;
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.2;
            background: linear-gradient(135deg, #fff, var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 16px;
        }
        .page-banner p {
            font-size: 1.12rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
        }
        .page-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-bottom: 20px;
        }
        .page-banner .breadcrumb a {
            color: var(--text-secondary);
        }
        .page-banner .breadcrumb a:hover {
            color: var(--accent-secondary);
        }
        .page-banner .breadcrumb span {
            color: var(--accent-primary);
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 60px 0 48px;
            }
            .page-banner h1 {
                font-size: 1.9rem;
            }
            .page-banner p {
                font-size: 0.98rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.6rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 72px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.1rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            background: linear-gradient(135deg, #fff, var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 580px;
            margin: 0 auto;
        }
        .section-header .accent-line {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            border-radius: 10px;
            margin: 16px auto 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 52px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .section-header p {
                font-size: 0.95rem;
            }
        }

        /* ===== 分类卡片网格 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
        }
        .category-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .category-card .card-img {
            width: 100%;
            height: 190px;
            object-fit: cover;
            display: block;
            transition: var(--transition);
        }
        .category-card:hover .card-img {
            transform: scale(1.03);
        }
        .category-card .card-body {
            padding: 22px 22px 26px;
        }
        .category-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .category-card .card-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .category-card .card-body .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .category-card .card-body .tag {
            background: rgba(108, 92, 231, 0.15);
            color: var(--accent-primary);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            border: 1px solid rgba(108, 92, 231, 0.2);
        }
        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 22px;
            }
        }
        @media (max-width: 620px) {
            .category-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .category-card .card-img {
                height: 170px;
            }
        }

        /* ===== 特色赛事列表 ===== */
        .feature-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .feature-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            padding: 22px 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            align-items: flex-start;
        }
        .feature-item:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
            transform: translateX(4px);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .feature-item .fi-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(108, 92, 231, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--accent-primary);
            border: 1px solid rgba(108, 92, 231, 0.2);
        }
        .feature-item .fi-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-primary);
        }
        .feature-item .fi-content p {
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.6;
        }
        .feature-item .fi-content .fi-meta {
            display: flex;
            gap: 16px;
            margin-top: 8px;
            font-size: 0.78rem;
            color: var(--text-weak);
        }
        .feature-item .fi-content .fi-meta i {
            margin-right: 4px;
            color: var(--accent-primary);
        }
        @media (max-width: 820px) {
            .feature-list {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .feature-item {
                flex-direction: column;
                padding: 18px;
            }
            .feature-item .fi-icon {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            padding: 48px 36px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .stat-item {
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-item .stat-label {
            color: var(--text-secondary);
            font-size: 0.92rem;
            margin-top: 6px;
        }
        @media (max-width: 820px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                padding: 36px 24px;
                gap: 28px;
            }
            .stat-item .stat-number {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                padding: 28px 18px;
                gap: 20px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
        }

        /* ===== 资讯卡片 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .news-card:hover {
            transform: translateY(-5px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .news-card .nc-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .nc-img {
            transform: scale(1.04);
        }
        .news-card .nc-body {
            padding: 20px 22px 24px;
        }
        .news-card .nc-body .nc-tag {
            display: inline-block;
            background: rgba(0, 210, 255, 0.12);
            color: var(--accent-secondary);
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.7rem;
            font-weight: 600;
            margin-bottom: 10px;
            border: 1px solid rgba(0, 210, 255, 0.15);
        }
        .news-card .nc-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-primary);
        }
        .news-card .nc-body p {
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .news-card .nc-body .nc-meta {
            font-size: 0.78rem;
            color: var(--text-weak);
            display: flex;
            gap: 16px;
        }
        .news-card .nc-body .nc-meta i {
            margin-right: 4px;
            color: var(--accent-primary);
        }
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 620px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
            .news-card .nc-img {
                height: 190px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--accent-primary);
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item summary:hover {
            background: rgba(108, 92, 231, 0.05);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.75;
        }
        @media (max-width: 620px) {
            .faq-item summary {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.88rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.08), rgba(0, 210, 255, 0.06)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 13, 23, 0.6);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: #fff;
        }
        .cta-section p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 540px;
            margin: 0 auto 28px;
        }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--accent-primary), #a29bfe);
            color: #fff;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 6px 30px rgba(108, 92, 231, 0.35);
            transition: var(--transition);
        }
        .cta-section .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(108, 92, 231, 0.5);
            color: #fff;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 44px 24px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .cta-btn {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        /* ===== 流行赛事排行 ===== */
        .rank-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            padding: 14px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .rank-item:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
            transform: translateX(4px);
        }
        .rank-item .rank-num {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent-primary);
            width: 32px;
            text-align: center;
            flex-shrink: 0;
        }
        .rank-item .rank-num.top1 {
            color: var(--accent-gold);
        }
        .rank-item .rank-num.top2 {
            color: #b0b0b0;
        }
        .rank-item .rank-num.top3 {
            color: #cd7f32;
        }
        .rank-item .rank-info {
            flex: 1;
        }
        .rank-item .rank-info h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
        }
        .rank-item .rank-info span {
            font-size: 0.78rem;
            color: var(--text-weak);
        }
        .rank-item .rank-badge {
            background: rgba(108, 92, 231, 0.12);
            color: var(--accent-primary);
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.7rem;
            font-weight: 600;
            border: 1px solid rgba(108, 92, 231, 0.15);
            white-space: nowrap;
        }
        @media (max-width: 820px) {
            .rank-list {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .rank-item {
                padding: 12px 14px;
                flex-wrap: wrap;
                gap: 10px;
            }
            .rank-item .rank-num {
                font-size: 1.1rem;
                width: 26px;
            }
            .rank-item .rank-info h5 {
                font-size: 0.88rem;
            }
        }

        /* ===== 页脚 ===== */
        footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 52px 0 0;
            margin-top: 20px;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid var(--border-color);
        }
        footer .footer-brand .logo {
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        footer .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.7;
            max-width: 300px;
        }
        footer h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        footer ul li {
            margin-bottom: 8px;
        }
        footer ul li a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        footer ul li a:hover {
            color: var(--accent-secondary);
            padding-left: 4px;
        }
        footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0 28px;
            gap: 20px;
            flex-wrap: wrap;
        }
        footer .footer-bottom span {
            color: var(--text-weak);
            font-size: 0.82rem;
        }
        footer .footer-social {
            display: flex;
            gap: 14px;
        }
        footer .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 1rem;
            transition: var(--transition);
        }
        footer .footer-social a:hover {
            background: var(--accent-primary);
            color: #fff;
            border-color: var(--accent-primary);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(108, 92, 231, 0.3);
        }
        @media (max-width: 900px) {
            footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            footer .footer-brand {
                grid-column: 1 / -1;
            }
            footer .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 响应式辅助 ===== */
        @media (max-width: 480px) {
            .header-inner {
                padding: 0 14px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.2rem;
            }
        }
        /* 平滑滚动偏移 */
        .scroll-offset {
            scroll-margin-top: calc(var(--header-height) + 20px);
        }
        /* 焦点可见性 */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--accent-primary);
            outline-offset: 2px;
        }
        /* 占位符颜色 */
        ::placeholder {
            color: var(--text-weak);
            opacity: 0.7;
        }

/* roulang page: article */
:root {
    --bg-primary: #0b0f1a;
    --bg-secondary: #111827;
    --bg-card: #1a1f2e;
    --bg-card-hover: #232a3d;
    --bg-nav: rgba(11, 15, 26, 0.92);
    --neon-blue: #00d4ff;
    --neon-purple: #7c3aed;
    --neon-gold: #f59e0b;
    --neon-cyan: #22d3ee;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: rgba(0, 212, 255, 0.15);
    --border-hover: rgba(0, 212, 255, 0.4);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.08);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 1rem;
    min-height: 100vh;
}
a { color: var(--neon-blue); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--neon-cyan); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { padding: 0 16px; } }

/* === HEADER / NAV === */
#header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: var(--bg-nav);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}
#header.scrolled { background: rgba(11, 15, 26, 0.98); box-shadow: 0 4px 30px rgba(0,0,0,0.5); }
.header-inner {
    max-width: 1200px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
    height: 72px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo i.fa-bolt { font-size: 1.6rem; color: var(--neon-gold); filter: drop-shadow(0 0 8px rgba(245,158,11,0.4)); }
.logo a { font-size: 1.35rem; font-weight: 800; color: var(--text-primary); letter-spacing: 0.5px; background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.logo a:hover { opacity: 0.9; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
    padding: 8px 18px; border-radius: var(--radius-sm);
    color: var(--text-secondary); font-size: 0.92rem; font-weight: 500;
    transition: var(--transition); position: relative; white-space: nowrap;
}
.nav-links a i { margin-right: 6px; font-size: 0.85rem; }
.nav-links a:hover { color: var(--text-primary); background: rgba(0,212,255,0.06); }
.nav-links a.active { color: var(--neon-blue); background: rgba(0,212,255,0.08); }
.nav-links a.active::after {
    content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    width: 60%; height: 2px; background: var(--neon-blue);
    box-shadow: 0 0 12px rgba(0,212,255,0.5); border-radius: 2px;
}
.nav-links a.nav-cta {
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    color: #fff; padding: 8px 22px; border-radius: 30px; font-weight: 600;
    box-shadow: 0 4px 20px rgba(0,212,255,0.25); margin-left: 8px;
}
.nav-links a.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,212,255,0.35); color: #fff; }
.nav-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.5rem; cursor: pointer; padding: 8px; border-radius: var(--radius-sm); transition: var(--transition); }
.nav-toggle:hover { background: rgba(255,255,255,0.05); }
@media (max-width: 820px) {
    .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0; background: rgba(11,15,26,0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 16px 24px 24px; gap: 6px; border-bottom: 1px solid var(--border-color); }
    .nav-links.open { display: flex; }
    .nav-links a { width: 100%; padding: 12px 16px; border-radius: var(--radius-sm); }
    .nav-links a.nav-cta { margin-left: 0; text-align: center; margin-top: 8px; }
    .nav-toggle { display: block; }
}

/* === HERO ARTICLE === */
.article-hero {
    position: relative; min-height: 50vh; display: flex; align-items: flex-end;
    padding: 120px 0 60px; overflow: hidden;
    background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
}
.article-hero::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(11,15,26,0.30) 0%, rgba(11,15,26,0.88) 100%);
    z-index: 1;
}
.article-hero .container { position: relative; z-index: 2; }
.article-hero .breadcrumb {
    display: flex; align-items: center; gap: 10px; font-size: 0.85rem;
    color: var(--text-muted); margin-bottom: 16px; flex-wrap: wrap;
}
.article-hero .breadcrumb a { color: var(--neon-blue); }
.article-hero .breadcrumb a:hover { color: var(--neon-cyan); }
.article-hero .breadcrumb span { color: var(--text-secondary); }
.article-hero .article-category {
    display: inline-block; padding: 4px 16px; border-radius: 30px;
    background: rgba(0,212,255,0.12); color: var(--neon-blue); font-size: 0.82rem;
    font-weight: 600; letter-spacing: 0.5px; margin-bottom: 14px;
    border: 1px solid rgba(0,212,255,0.2);
}
.article-hero h1 {
    font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 800; line-height: 1.25;
    color: var(--text-primary); margin-bottom: 16px; max-width: 900px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.article-hero .article-meta {
    display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
    font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 8px;
}
.article-hero .article-meta i { margin-right: 5px; color: var(--neon-blue); }
.article-hero .article-desc {
    font-size: 1.05rem; color: var(--text-secondary); max-width: 720px;
    line-height: 1.7; margin-top: 8px;
}

/* === ARTICLE BODY === */
.article-body-section {
    padding: 60px 0 40px;
}
.article-layout {
    display: grid; grid-template-columns: 1fr 320px; gap: 48px;
}
.article-main { min-width: 0; }
.article-content {
    background: var(--bg-card); border-radius: var(--radius-lg);
    padding: 40px 44px; border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
}
.article-content p { margin-bottom: 1.25em; color: var(--text-secondary); font-size: 1.04rem; line-height: 1.85; }
.article-content h2 { font-size: 1.6rem; font-weight: 700; margin: 1.8em 0 0.6em; color: var(--text-primary); }
.article-content h3 { font-size: 1.25rem; font-weight: 600; margin: 1.4em 0 0.5em; color: var(--text-primary); }
.article-content ul, .article-content ol { margin: 0 0 1.25em 1.5em; color: var(--text-secondary); }
.article-content li { margin-bottom: 0.4em; }
.article-content a { color: var(--neon-blue); border-bottom: 1px solid transparent; }
.article-content a:hover { border-bottom-color: var(--neon-blue); }
.article-content blockquote {
    border-left: 3px solid var(--neon-blue); padding: 12px 20px; margin: 1.5em 0;
    background: rgba(0,212,255,0.04); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary); font-style: italic;
}
.article-content img { border-radius: var(--radius-md); margin: 1.5em 0; box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.article-content hr { border: none; height: 1px; background: linear-gradient(90deg, transparent, var(--neon-blue), transparent); margin: 2em 0; }
.article-tags {
    display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; padding-top: 24px;
    border-top: 1px solid var(--border-color);
}
.article-tags .tag {
    padding: 4px 14px; border-radius: 20px; background: rgba(0,212,255,0.06);
    border: 1px solid rgba(0,212,255,0.12); color: var(--text-secondary); font-size: 0.82rem;
    transition: var(--transition);
}
.article-tags .tag:hover { border-color: var(--neon-blue); color: var(--neon-blue); background: rgba(0,212,255,0.1); }

/* === SIDEBAR === */
.article-sidebar { display: flex; flex-direction: column; gap: 28px; }
.sidebar-card {
    background: var(--bg-card); border-radius: var(--radius-md);
    padding: 24px; border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
}
.sidebar-card h3 {
    font-size: 1.05rem; font-weight: 700; margin-bottom: 16px;
    color: var(--text-primary); display: flex; align-items: center; gap: 8px;
}
.sidebar-card h3 i { color: var(--neon-blue); font-size: 0.9rem; }
.sidebar-card ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.sidebar-card ul li a {
    display: flex; align-items: center; gap: 10px; padding: 8px 12px;
    border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 0.9rem;
    transition: var(--transition); background: rgba(255,255,255,0.02);
}
.sidebar-card ul li a:hover { background: rgba(0,212,255,0.06); color: var(--text-primary); }
.sidebar-card ul li a i { color: var(--neon-blue); font-size: 0.7rem; flex-shrink: 0; }
.sidebar-card .sidebar-cta {
    display: block; text-align: center; padding: 12px; border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    color: #fff; font-weight: 600; font-size: 0.92rem; margin-top: 12px;
    transition: var(--transition);
}
.sidebar-card .sidebar-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(0,212,255,0.25); color: #fff; }

/* === RELATED POSTS === */
.related-section {
    padding: 40px 0 60px;
}
.related-section .section-title {
    font-size: 1.6rem; font-weight: 700; margin-bottom: 32px;
    display: flex; align-items: center; gap: 12px;
}
.related-section .section-title i { color: var(--neon-blue); }
.related-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.related-card {
    background: var(--bg-card); border-radius: var(--radius-md);
    overflow: hidden; border: 1px solid var(--border-color);
    transition: var(--transition); box-shadow: var(--shadow-card);
}
.related-card:hover { transform: translateY(-6px); border-color: var(--border-hover); box-shadow: var(--shadow-glow), var(--shadow-card); }
.related-card .rel-img {
    width: 100%; height: 160px; object-fit: cover; display: block;
    background: var(--bg-secondary);
}
.related-card .rel-body { padding: 16px 18px 18px; }
.related-card .rel-body .rel-cat {
    font-size: 0.72rem; color: var(--neon-blue); font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px;
}
.related-card .rel-body h4 { font-size: 0.95rem; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; line-height: 1.4; }
.related-card .rel-body p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.5; }
.related-card .rel-body .rel-date { font-size: 0.75rem; color: var(--text-muted); margin-top: 8px; }

/* === CTA === */
.cta-section {
    padding: 60px 0; background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}
.cta-box {
    text-align: center; padding: 48px 40px; border-radius: var(--radius-lg);
    background: linear-gradient(145deg, rgba(0,212,255,0.04), rgba(124,58,237,0.04));
    border: 1px solid var(--border-color); position: relative; overflow: hidden;
}
.cta-box::before {
    content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(0,212,255,0.03) 0%, transparent 60%);
    pointer-events: none;
}
.cta-box h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 12px; }
.cta-box p { color: var(--text-secondary); max-width: 560px; margin: 0 auto 24px; font-size: 1.05rem; }
.cta-box .cta-btn {
    display: inline-flex; align-items: center; gap: 10px; padding: 14px 36px;
    border-radius: 40px; background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    color: #fff; font-weight: 600; font-size: 1rem; transition: var(--transition);
    box-shadow: 0 4px 25px rgba(0,212,255,0.2);
}
.cta-box .cta-btn:hover { transform: translateY(-3px); box-shadow: 0 10px 40px rgba(0,212,255,0.3); color: #fff; }

/* === NOT FOUND === */
.not-found-box {
    text-align: center; padding: 80px 20px 60px;
}
.not-found-box i { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; opacity: 0.4; }
.not-found-box h2 { font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
.not-found-box p { color: var(--text-secondary); font-size: 1.05rem; margin-bottom: 24px; }
.not-found-box .back-btn {
    display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px;
    border-radius: 30px; background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    color: #fff; font-weight: 600; transition: var(--transition);
}
.not-found-box .back-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(0,212,255,0.25); color: #fff; }

/* === FOOTER === */
footer {
    background: var(--bg-secondary); border-top: 1px solid var(--border-color);
    padding: 56px 0 30px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 36px; }
footer .logo { margin-bottom: 14px; }
footer .logo i.fa-bolt { font-size: 1.3rem; }
footer .logo a { font-size: 1.15rem; }
footer p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; max-width: 360px; }
footer h4 { font-size: 0.95rem; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; }
footer ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
footer ul li a { color: var(--text-secondary); font-size: 0.88rem; transition: var(--transition); display: flex; align-items: center; gap: 8px; }
footer ul li a:hover { color: var(--neon-blue); padding-left: 4px; }
footer ul li span { display: flex; align-items: center; gap: 8px; }
.footer-bottom {
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 24px; border-top: 1px solid var(--border-color);
    font-size: 0.85rem; color: var(--text-muted);
}
.footer-social { display: flex; gap: 14px; }
.footer-social a { color: var(--text-muted); font-size: 1.2rem; transition: var(--transition); }
.footer-social a:hover { color: var(--neon-blue); transform: scale(1.15); }

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; gap: 36px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}
@media (max-width: 768px) {
    .article-hero { min-height: 40vh; padding: 100px 0 40px; }
    .article-hero h1 { font-size: 1.5rem; }
    .article-content { padding: 24px 20px; }
    .article-content p { font-size: 0.96rem; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .cta-box { padding: 32px 20px; }
    .cta-box h2 { font-size: 1.4rem; }
}
@media (max-width: 520px) {
    .header-inner { padding: 0 16px; height: 64px; }
    .logo a { font-size: 1.1rem; }
    .article-hero { padding: 80px 0 30px; min-height: 30vh; }
    .article-hero h1 { font-size: 1.25rem; }
    .article-content { padding: 18px 14px; border-radius: var(--radius-md); }
    .sidebar-card { padding: 18px; }
    .cta-box h2 { font-size: 1.2rem; }
    .cta-box .cta-btn { padding: 12px 24px; font-size: 0.9rem; }
}
@media (max-width: 380px) {
    .nav-links a { font-size: 0.82rem; padding: 6px 12px; }
    .nav-links a i { margin-right: 4px; }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #f0c040;
            --primary-hover: #f5d060;
            --primary-glow: rgba(240, 192, 64, 0.35);
            --secondary: #ff6b35;
            --accent: #00d4ff;
            --bg-dark: #0b0d12;
            --bg-card: #141820;
            --bg-card-hover: #1c212e;
            --bg-section-alt: #10141c;
            --text-main: #f0f2f5;
            --text-secondary: #a0a8b8;
            --text-weak: #6a7288;
            --border-color: #2a3040;
            --border-glow: rgba(240, 192, 64, 0.15);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(240, 192, 64, 0.08);
            --spacing-section: 5rem;
            --spacing-block: 2.5rem;
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --max-width: 1200px;
            --header-h: 70px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-dark);
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        button,
        input {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
            background: none;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ===== 头部 & 导航 ===== */
        #header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(11, 13, 18, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .logo i {
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px var(--primary-glow));
        }
        .logo a {
            color: var(--primary);
        }
        .logo a:hover {
            color: var(--primary-hover);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .nav-links a {
            padding: 0.55rem 1.1rem;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 0.4rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-links a i {
            font-size: 0.85rem;
        }
        .nav-links a:hover {
            color: var(--text-main);
            background: rgba(240, 192, 64, 0.06);
        }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(240, 192, 64, 0.08);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 1.1rem;
            right: 1.1rem;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--primary-glow);
        }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--primary), #d4a830);
            color: #0b0d12;
            font-weight: 700;
            padding: 0.55rem 1.4rem;
            border-radius: var(--radius-sm);
            box-shadow: 0 0 20px rgba(240, 192, 64, 0.15);
        }
        .nav-links a.nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 30px rgba(240, 192, 64, 0.3);
            background: linear-gradient(135deg, var(--primary-hover), #e0b840);
        }
        .nav-toggle {
            display: none;
            background: none;
            color: var(--text-main);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.3rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(240, 192, 64, 0.08);
        }

        /* ===== 移动端导航 ===== */
        @media(max-width:820px) {
            .nav-links {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(11, 13, 18, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 1rem 1.5rem 2rem;
                gap: 0.2rem;
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                padding: 0.75rem 1rem;
                font-size: 1rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.nav-cta {
                margin-top: 0.5rem;
                text-align: center;
                justify-content: center;
            }
            .nav-toggle {
                display: block;
            }
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            margin-top: var(--header-h);
            padding: 6rem 0 4rem;
            background: linear-gradient(135deg, #0b0d12 0%, #141820 50%, #0f131a 100%);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: screen;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 0.8rem;
            letter-spacing: 1px;
        }
        .page-banner h1 span {
            color: var(--primary);
        }
        .page-banner p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 1.5rem;
            line-height: 1.8;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 0.88rem;
            color: var(--text-weak);
        }
        .page-banner .breadcrumb a {
            color: var(--text-secondary);
        }
        .page-banner .breadcrumb a:hover {
            color: var(--primary);
        }
        .page-banner .breadcrumb .sep {
            color: var(--text-weak);
        }
        .page-banner .breadcrumb .current {
            color: var(--primary);
        }

        @media(max-width:768px) {
            .page-banner {
                padding: 4.5rem 0 2.8rem;
            }
            .page-banner h1 {
                font-size: 1.9rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            color: var(--text-main);
            letter-spacing: 0.5px;
        }
        .section-sub {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 2.5rem;
            line-height: 1.7;
        }
        .section-label {
            display: inline-block;
            padding: 0.25rem 0.9rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            background: rgba(240, 192, 64, 0.12);
            color: var(--primary);
            border: 1px solid rgba(240, 192, 64, 0.15);
            margin-bottom: 0.8rem;
        }
        .text-center {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }

        @media(max-width:768px) {
            .section {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-sub {
                font-size: 0.9rem;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.8rem;
        }
        .card-grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .card-grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        @media(max-width:1024px) {
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media(max-width:768px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-grid-2 {
                grid-template-columns: 1fr;
            }
            .card-grid-3 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 内容卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .card:hover {
            transform: translateY(-4px);
            border-color: rgba(240, 192, 64, 0.2);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .card-body {
            padding: 1.5rem 1.5rem 1.8rem;
        }
        .card-tag {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            border-radius: 12px;
            font-size: 0.7rem;
            font-weight: 600;
            background: rgba(240, 192, 64, 0.1);
            color: var(--primary);
            border: 1px solid rgba(240, 192, 64, 0.1);
            margin-bottom: 0.6rem;
        }
        .card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        .card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-top: 0.8rem;
            font-size: 0.8rem;
            color: var(--text-weak);
        }
        .card-meta i {
            margin-right: 0.3rem;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            background: transparent;
            color: var(--text-main);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #d4a830);
            color: #0b0d12;
            box-shadow: 0 0 20px rgba(240, 192, 64, 0.15);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(240, 192, 64, 0.3);
            background: linear-gradient(135deg, var(--primary-hover), #e0b840);
        }
        .btn-outline {
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(240, 192, 64, 0.05);
        }
        .btn-sm {
            padding: 0.45rem 1.1rem;
            font-size: 0.82rem;
        }
        .btn i {
            font-size: 0.85rem;
        }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 0.2rem 0.8rem;
            border-radius: 14px;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(240, 192, 64, 0.08);
            color: var(--primary);
            border: 1px solid rgba(240, 192, 64, 0.1);
        }
        .badge-hot {
            background: rgba(255, 107, 53, 0.12);
            color: var(--secondary);
            border-color: rgba(255, 107, 53, 0.15);
        }
        .badge-new {
            background: rgba(0, 212, 255, 0.1);
            color: var(--accent);
            border-color: rgba(0, 212, 255, 0.12);
        }
        .badge i {
            font-size: 0.6rem;
            margin-right: 0.3rem;
        }

        /* ===== 图文混合区块 ===== */
        .media-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .media-block.reverse {
            direction: rtl;
        }
        .media-block.reverse>* {
            direction: ltr;
        }
        .media-block .media-content h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: var(--text-main);
        }
        .media-block .media-content p {
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 1.2rem;
        }
        .media-block .media-img img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }
        @media(max-width:900px) {
            .media-block {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .media-block.reverse {
                direction: ltr;
            }
            .media-block .media-content h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .stat-item {
            text-align: center;
            padding: 1.8rem 1rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: rgba(240, 192, 64, 0.15);
            transform: translateY(-2px);
        }
        .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 0.4rem;
        }
        @media(max-width:768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .stat-item .num {
                font-size: 1.8rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(240, 192, 64, 0.1);
        }
        .faq-q {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
        }
        .faq-q i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-q.open i {
            transform: rotate(180deg);
        }
        .faq-a {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
            display: none;
        }
        .faq-a.open {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, #141820 0%, #1a1f2e 100%);
            border: 1px solid rgba(240, 192, 64, 0.1);
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            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: 0.06;
            mix-blend-mode: screen;
        }
        .cta-block .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.8rem;
        }
        .cta-block p {
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 1.8rem;
            font-size: 1.05rem;
        }
        .cta-block .btn-group {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        @media(max-width:768px) {
            .cta-block {
                padding: 2.5rem 1.5rem;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 0.92rem;
            }
        }

        /* ===== 特色功能列表 ===== */
        .feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1.2rem;
        }
        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
            padding: 1rem 1.2rem;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .feature-item:hover {
            border-color: rgba(240, 192, 64, 0.12);
            background: var(--bg-card-hover);
        }
        .feature-item .icon {
            font-size: 1.2rem;
            color: var(--primary);
            min-width: 1.6rem;
            padding-top: 0.1rem;
        }
        .feature-item .text strong {
            display: block;
            font-size: 0.92rem;
            color: var(--text-main);
            margin-bottom: 0.15rem;
        }
        .feature-item .text span {
            font-size: 0.82rem;
            color: var(--text-secondary);
        }

        /* ===== 文章列表 ===== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .article-row {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            padding: 1rem 1.2rem;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-row:hover {
            border-color: rgba(240, 192, 64, 0.12);
            background: var(--bg-card-hover);
            transform: translateX(4px);
        }
        .article-row .rank {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
            min-width: 2rem;
            text-align: center;
        }
        .article-row .info {
            flex: 1;
        }
        .article-row .info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 0.15rem;
        }
        .article-row .info p {
            font-size: 0.82rem;
            color: var(--text-weak);
        }
        .article-row .badge {
            flex-shrink: 0;
        }

        /* ===== 页脚 ===== */
        footer {
            background: #0a0c10;
            border-top: 1px solid var(--border-color);
            padding: 3.5rem 0 0;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
            padding-bottom: 2rem;
        }
        footer .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 0.8rem;
        }
        footer .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.7;
            max-width: 280px;
        }
        footer h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 1rem;
            letter-spacing: 0.3px;
        }
        footer ul li {
            margin-bottom: 0.5rem;
        }
        footer ul li a {
            font-size: 0.88rem;
            color: var(--text-weak);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: var(--transition);
        }
        footer ul li a:hover {
            color: var(--primary);
        }
        footer ul li a i {
            color: var(--primary);
            font-size: 0.6rem;
        }
        footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem 0;
            border-top: 1px solid var(--border-color);
            font-size: 0.82rem;
            color: var(--text-weak);
        }
        footer .footer-social {
            display: flex;
            gap: 0.8rem;
        }
        footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2.2rem;
            height: 2.2rem;
            border-radius: 50%;
            background: rgba(240, 192, 64, 0.06);
            color: var(--text-secondary);
            font-size: 1rem;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        footer .footer-social a:hover {
            background: rgba(240, 192, 64, 0.12);
            color: var(--primary);
            border-color: rgba(240, 192, 64, 0.15);
            transform: translateY(-2px);
        }
        @media(max-width:900px) {
            footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            footer .footer-brand {
                grid-column: 1 / -1;
            }
            footer .footer-brand p {
                max-width: 100%;
            }
        }
        @media(max-width:520px) {
            footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            footer .footer-bottom {
                flex-direction: column;
                gap: 0.8rem;
                text-align: center;
            }
        }

        /* ===== 工具类 ===== */
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mt-3 {
            margin-top: 3rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .gap-1 {
            gap: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

        /* ===== 热门排行特殊 ===== */
        .hot-list .article-row:first-child .rank {
            color: var(--secondary);
            font-size: 1.5rem;
        }
        .hot-list .article-row:nth-child(2) .rank {
            color: var(--primary);
        }
        .hot-list .article-row:nth-child(3) .rank {
            color: var(--accent);
        }