/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --bg-primary: #0a0e17;
            --bg-secondary: #111827;
            --bg-card: #1a2236;
            --bg-card-hover: #1f2a45;
            --neon-primary: #00d4ff;
            --neon-secondary: #7c3aed;
            --neon-glow: rgba(0, 212, 255, 0.25);
            --neon-glow-strong: rgba(0, 212, 255, 0.5);
            --gold: #f59e0b;
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: #1e293b;
            --border-light: #2d3a52;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 76px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-primary);
            min-height: 100vh;
        }
        a {
            color: var(--neon-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: #fff;
        }
        a:focus-visible {
            outline: 2px solid var(--neon-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            line-height: 1.2;
            transition: all var(--transition);
            border: 2px solid transparent;
            position: relative;
            overflow: hidden;
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: var(--neon-primary);
            color: #0a0e17;
            border-color: var(--neon-primary);
            box-shadow: 0 0 20px var(--neon-glow);
        }
        .btn-primary:hover {
            background: #fff;
            border-color: #fff;
            color: #0a0e17;
            box-shadow: 0 0 40px rgba(0, 212, 255, 0.4);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 15px var(--neon-glow);
        }
        .btn-secondary {
            background: transparent;
            color: var(--neon-primary);
            border-color: var(--neon-primary);
        }
        .btn-secondary:hover {
            background: var(--neon-primary);
            color: #0a0e17;
            box-shadow: 0 0 30px var(--neon-glow);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .btn-gold {
            background: var(--gold);
            color: #0a0e17;
            border-color: var(--gold);
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.25);
        }
        .btn-gold:hover {
            background: #fff;
            border-color: #fff;
            color: #0a0e17;
            transform: translateY(-2px);
            box-shadow: 0 0 40px rgba(245, 158, 11, 0.35);
        }
        .btn-sm {
            padding: 10px 22px;
            font-size: 14px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(10, 14, 23, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 212, 255, 0.08);
            transition: background var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 24px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            font-weight: 700;
            box-shadow: 0 0 20px var(--neon-glow);
        }
        .logo span {
            background: linear-gradient(135deg, var(--neon-primary), #fff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 10px 20px;
            border-radius: 50px;
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 15px;
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--neon-primary);
            background: rgba(0, 212, 255, 0.06);
        }
        .nav-list a.active {
            color: #fff;
            background: rgba(0, 212, 255, 0.12);
            box-shadow: inset 0 0 0 1px rgba(0, 212, 255, 0.2), 0 0 20px rgba(0, 212, 255, 0.06);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--neon-primary);
            border-radius: 3px;
            box-shadow: 0 0 12px var(--neon-glow-strong);
        }
        .nav-cta .btn {
            padding: 10px 24px;
            font-size: 14px;
        }
        .mobile-toggle {
            display: none;
            font-size: 28px;
            color: var(--text-primary);
            padding: 4px 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 998;
            backdrop-filter: blur(4px);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--header-height);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            transform: scale(1.05);
            filter: brightness(0.35) saturate(1.2);
            transition: transform 6s ease;
        }
        .hero:hover .hero-bg {
            transform: scale(1);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 23, 0.88) 0%, rgba(10, 14, 23, 0.5) 50%, rgba(0, 212, 255, 0.08) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            padding: 80px 24px 100px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 212, 255, 0.10);
            border: 1px solid rgba(0, 212, 255, 0.2);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            color: var(--neon-primary);
            margin-bottom: 24px;
            letter-spacing: 0.5px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            font-size: 12px;
        }
        .hero-content h1 {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #fff 30%, var(--neon-primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: clamp(1.05rem, 2vw, 1.3rem);
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 100px 0;
            position: relative;
        }
        .section-dark {
            background: var(--bg-secondary);
        }
        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 16px;
            text-align: center;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 56px;
            line-height: 1.7;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--neon-primary), var(--neon-secondary));
            border-radius: 4px;
            margin: 0 auto 24px;
            box-shadow: 0 0 20px var(--neon-glow);
        }

        /* ===== 关于板块 ===== */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .about-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
            position: relative;
        }
        .about-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .about-image:hover img {
            transform: scale(1.03);
        }
        .about-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.06), transparent 50%);
            pointer-events: none;
        }
        .about-text h3 {
            font-size: 1.6rem;
            margin-bottom: 16px;
            color: var(--neon-primary);
        }
        .about-text p {
            color: var(--text-secondary);
            margin-bottom: 20px;
            font-size: 1.02rem;
            line-height: 1.8;
        }
        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 24px;
        }
        .about-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 15px;
        }
        .about-features li i {
            color: var(--neon-primary);
            font-size: 16px;
            width: 28px;
            height: 28px;
            background: rgba(0, 212, 255, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        /* ===== 分类卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 28px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            position: relative;
            box-shadow: var(--shadow-card);
        }
        .category-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 212, 255, 0.2);
            box-shadow: var(--shadow-glow), var(--shadow-card);
            background: var(--bg-card-hover);
        }
        .category-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .category-card:hover .card-img img {
            transform: scale(1.05);
        }
        .category-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(10, 14, 23, 0.5) 0%, transparent 60%);
            pointer-events: none;
        }
        .category-card .card-body {
            padding: 24px 26px 28px;
        }
        .category-card .card-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            background: rgba(0, 212, 255, 0.10);
            color: var(--neon-primary);
            border: 1px solid rgba(0, 212, 255, 0.15);
            margin-bottom: 12px;
        }
        .category-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .category-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .category-card .card-link {
            font-weight: 600;
            font-size: 14px;
            color: var(--neon-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }
        .category-card .card-link:hover {
            gap: 12px;
            color: #fff;
        }

        /* ===== 资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 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);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 212, 255, 0.15);
            box-shadow: var(--shadow-glow), var(--shadow-card);
            background: var(--bg-card-hover);
        }
        .news-card .news-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .news-card:hover .news-img img {
            transform: scale(1.05);
        }
        .news-card .news-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .news-meta .news-cat {
            color: var(--neon-primary);
            font-weight: 600;
            background: rgba(0, 212, 255, 0.06);
            padding: 2px 12px;
            border-radius: 50px;
        }
        .news-meta .news-date {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card h3 a {
            color: var(--text-primary);
        }
        .news-card h3 a:hover {
            color: var(--neon-primary);
        }
        .news-card .news-excerpt {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .news-card .news-readmore {
            font-weight: 600;
            font-size: 14px;
            color: var(--neon-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
            margin-top: auto;
        }
        .news-card .news-readmore:hover {
            gap: 12px;
            color: #fff;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            font-size: 1.1rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-item {
            text-align: center;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 36px 20px 32px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 212, 255, 0.15);
            box-shadow: var(--shadow-glow), var(--shadow-card);
        }
        .stat-icon {
            font-size: 32px;
            color: var(--neon-primary);
            margin-bottom: 12px;
            display: block;
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 4px;
            background: linear-gradient(135deg, #fff, var(--neon-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-label {
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
        }

        /* ===== 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: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(0, 212, 255, 0.12);
        }
        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            text-align: left;
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--text-primary);
            background: none;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--neon-primary);
        }
        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--neon-primary);
            flex-shrink: 0;
            transition: transform var(--transition);
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.98rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(0, 212, 255, 0.04) 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .cta-box {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            padding: 20px 0;
        }
        .cta-box h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-box p {
            color: var(--text-secondary);
            font-size: 1.08rem;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul a:hover {
            color: var(--neon-primary);
        }
        .footer-col ul a i {
            font-size: 12px;
            color: var(--neon-primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.88rem;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--neon-primary);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            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: 18px;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--neon-primary);
            color: #0a0e17;
            border-color: var(--neon-primary);
            transform: translateY(-3px);
            box-shadow: 0 0 20px var(--neon-glow);
        }

        /* ===== 移动端适配 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid {
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .section {
                padding: 60px 0;
            }
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(10, 14, 23, 0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                padding: 14px 20px;
                font-size: 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-list a.active {
                background: rgba(0, 212, 255, 0.10);
            }
            .nav-cta {
                display: none;
            }
            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .nav-overlay.open {
                display: block;
            }
            .hero {
                min-height: 90vh;
            }
            .hero-content {
                padding: 60px 16px 80px;
            }
            .about-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .about-image img {
                height: 280px;
            }
            .about-features {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                padding: 24px 16px 20px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-subtitle {
                margin-bottom: 36px;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 16px 18px;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-content p {
                font-size: 0.98rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .container {
                padding: 0 16px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 15px;
            }
            .news-card .news-img {
                height: 150px;
            }
            .category-card .card-img {
                height: 170px;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
        }

        @media (min-width: 769px) {
            .mobile-toggle {
                display: none !important;
            }
            .nav-overlay {
                display: none !important;
            }
        }

        /* ===== 动画辅助 ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 0.6s ease forwards;
        }
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #ff2d55;
            --primary-dark: #d42045;
            --primary-glow: rgba(255, 45, 85, 0.35);
            --secondary: #0d6efd;
            --secondary-dark: #0a58ca;
            --accent: #ffc107;
            --bg-dark: #0b0e14;
            --bg-card: #131820;
            --bg-card-hover: #1a2330;
            --bg-elevated: #1c2533;
            --bg-nav: rgba(11, 14, 20, 0.92);
            --text-primary: #f0f2f5;
            --text-secondary: #9aa8b9;
            --text-muted: #5e6f82;
            --border-color: #2a3448;
            --border-glow: rgba(255, 45, 85, 0.25);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.04);
            --shadow-glow: 0 0 30px rgba(255, 45, 85, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-dark);
            background-image: radial-gradient(ellipse at 20% 30%, rgba(255, 45, 85, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 70%, rgba(13, 110, 253, 0.04) 0%, transparent 60%);
            min-height: 100vh;
        }
        a {
            color: var(--text-primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul {
            list-style: none;
        }

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

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: var(--bg-nav);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--text-primary);
        }
        .logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-sm);
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 20px var(--primary-glow);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list li a {
            display: block;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-list li a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--primary);
            transform: translateX(-50%);
            transition: var(--transition);
            border-radius: 2px;
            box-shadow: 0 0 10px var(--primary-glow);
        }
        .nav-list li a:hover::after,
        .nav-list li a.active::after {
            width: 60%;
        }
        .nav-list li a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-list li a.active {
            color: var(--primary);
            background: rgba(255, 45, 85, 0.1);
        }
        .nav-cta {
            display: flex;
            align-items: center;
        }
        .nav-cta-mobile {
            display: none;
        }
        .mobile-toggle {
            display: none;
            background: none;
            color: var(--text-primary);
            font-size: 24px;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 20px var(--primary-glow);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px var(--primary-glow);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid var(--border-color);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(255, 45, 85, 0.06);
        }
        .btn-sm {
            padding: 6px 18px;
            font-size: 13px;
            border-radius: var(--radius-sm);
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 17px;
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            background: rgba(255, 45, 85, 0.15);
            color: var(--primary);
            border: 1px solid rgba(255, 45, 85, 0.2);
        }
        .badge-secondary {
            background: rgba(13, 110, 253, 0.15);
            color: var(--secondary);
            border-color: rgba(13, 110, 253, 0.2);
        }
        .badge-accent {
            background: rgba(255, 193, 7, 0.15);
            color: var(--accent);
            border-color: rgba(255, 193, 7, 0.2);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            padding: 140px 0 60px;
            position: relative;
            background: linear-gradient(135deg, rgba(11, 14, 20, 0.92), rgba(20, 30, 50, 0.88)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-bottom: 1px solid var(--border-color);
        }
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 80px;
            background: linear-gradient(to top, var(--bg-dark), transparent);
            pointer-events: none;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
            max-width: 860px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            margin-bottom: 20px;
        }
        .article-meta .badge {
            font-size: 13px;
            padding: 5px 16px;
        }
        .article-meta span {
            color: var(--text-muted);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta span i {
            font-size: 14px;
            color: var(--primary);
        }
        .article-hero h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .article-hero .article-desc {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.6;
            max-width: 720px;
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 28px 0;
            width: 100%;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }
        .article-body p {
            margin-bottom: 20px;
            color: var(--text-secondary);
            font-size: 16.5px;
            line-height: 1.8;
        }
        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 40px 0 16px;
            color: var(--text-primary);
            letter-spacing: -0.3px;
        }
        .article-body h3 {
            font-size: 21px;
            font-weight: 600;
            margin: 32px 0 12px;
            color: var(--text-primary);
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 24px;
            padding-left: 24px;
            color: var(--text-secondary);
        }
        .article-body li {
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(255, 45, 85, 0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
        }
        .article-body .article-tags a {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-body .article-tags a:hover {
            background: rgba(255, 45, 85, 0.1);
            color: var(--primary);
            border-color: var(--primary);
        }
        .article-body .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }
        .article-body .article-share span {
            color: var(--text-muted);
            font-size: 14px;
        }
        .article-body .article-share a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            font-size: 16px;
        }
        .article-body .article-share a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-card h3 i {
            color: var(--primary);
            font-size: 18px;
        }
        .sidebar-related-list li {
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            padding: 14px 0;
        }
        .sidebar-related-list li:last-child {
            border-bottom: none;
        }
        .sidebar-related-list li a {
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .sidebar-related-list li a img {
            width: 68px;
            height: 54px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .sidebar-related-list li a .related-info {
            flex: 1;
        }
        .sidebar-related-list li a .related-info .related-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }
        .sidebar-related-list li a .related-info .related-title:hover {
            color: var(--primary);
        }
        .sidebar-related-list li a .related-info .related-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, rgba(255, 45, 85, 0.12), rgba(13, 110, 253, 0.08));
            border: 1px solid rgba(255, 45, 85, 0.2);
        }
        .sidebar-cta h3 {
            color: var(--primary);
        }
        .sidebar-cta p {
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 18px;
            line-height: 1.6;
        }
        .sidebar-cta .btn {
            width: 100%;
        }

        /* ===== Related Articles Section ===== */
        .related-section {
            padding: 60px 0 80px;
            border-top: 1px solid var(--border-color);
        }
        .related-section .section-title {
            font-size: 28px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 40px;
            color: var(--text-primary);
        }
        .related-section .section-title i {
            color: var(--primary);
            margin-right: 10px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 45, 85, 0.25);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
        }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .related-card .card-body {
            padding: 20px 22px 24px;
        }
        .related-card .card-body .badge {
            margin-bottom: 10px;
        }
        .related-card .card-body h4 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .related-card .card-body h4 a {
            color: var(--text-primary);
        }
        .related-card .card-body h4 a:hover {
            color: var(--primary);
        }
        .related-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .related-card .card-body .card-meta i {
            margin-right: 4px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .footer-col ul li a i {
            font-size: 10px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-col ul li a:hover i {
            color: var(--primary);
            transform: translateX(3px);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom p a {
            color: var(--text-muted);
        }
        .footer-bottom p a:hover {
            color: var(--primary);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            font-size: 16px;
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found-box i {
            font-size: 64px;
            color: var(--primary);
            margin-bottom: 20px;
            opacity: 0.6;
        }
        .not-found-box h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: var(--bg-nav);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 32px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
                pointer-events: none;
                max-height: 80vh;
                overflow-y: auto;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list li a {
                padding: 12px 16px;
                font-size: 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-list li a::after {
                display: none;
            }
            .nav-list li a.active {
                background: rgba(255, 45, 85, 0.12);
                color: var(--primary);
            }
            .nav-cta {
                display: none;
            }
            .nav-cta-mobile {
                display: block;
            }
            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .article-hero {
                padding: 120px 0 40px;
            }
            .article-hero h1 {
                font-size: 26px;
            }
            .article-hero .article-desc {
                font-size: 15px;
            }

            .article-body {
                padding: 24px 20px;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .article-body p {
                font-size: 15px;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .related-section .section-title {
                font-size: 22px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 22px;
            }
            .article-meta {
                gap: 10px;
            }
            .article-meta span {
                font-size: 12px;
            }
            .article-body {
                padding: 18px 14px;
                border-radius: var(--radius-md);
            }
            .sidebar-card {
                padding: 20px;
            }
            .related-card .card-img {
                height: 150px;
            }
        }

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

        /* ===== Selection ===== */
        ::selection {
            background: var(--primary);
            color: #fff;
        }

        /* ===== Focus ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --clr-primary: #00d4ff;
            --clr-primary-hover: #22e0ff;
            --clr-primary-dim: rgba(0, 212, 255, 0.15);
            --clr-secondary: #7c3aed;
            --clr-secondary-hover: #a855f7;
            --clr-accent: #a855f7;
            --clr-accent-glow: rgba(168, 85, 247, 0.4);
            --clr-bg-dark: #0a0a0f;
            --clr-bg-mid: #0f0f1a;
            --clr-bg-card: #1a1a2e;
            --clr-bg-card-hover: #222240;
            --clr-bg-section: #12121f;
            --clr-text-white: #ffffff;
            --clr-text-light: #e2e8f0;
            --clr-text-muted: #94a3b8;
            --clr-border: rgba(0, 212, 255, 0.15);
            --clr-border-hover: rgba(0, 212, 255, 0.35);
            --clr-nav-bg: rgba(10, 10, 15, 0.92);
            --clr-overlay: rgba(0, 0, 0, 0.65);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--clr-border);
            --shadow-card-hover: 0 12px 48px rgba(0, 0, 0, 0.7), 0 0 0 1px var(--clr-primary);
            --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.25);
            --shadow-glow-secondary: 0 0 30px rgba(124, 58, 237, 0.25);
            --transition-speed: 0.3s;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --spacing-section: 96px;
            --spacing-block: 64px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--clr-text-light);
            background: var(--clr-bg-dark);
            min-height: 100vh;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        button:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 4px;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--clr-text-white);
            font-weight: 700;
            line-height: 1.25;
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-speed) ease;
            border: 1px solid transparent;
            cursor: pointer;
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 4px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 20px rgba(0, 212, 255, 0.25);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--clr-primary-hover), var(--clr-secondary-hover));
            box-shadow: 0 6px 30px rgba(0, 212, 255, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(0, 212, 255, 0.2);
        }

        .btn-outline {
            background: transparent;
            color: var(--clr-primary);
            border-color: var(--clr-primary);
        }
        .btn-outline:hover {
            background: var(--clr-primary-dim);
            color: var(--clr-primary-hover);
            border-color: var(--clr-primary-hover);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 13px;
            border-radius: var(--radius-sm);
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 18px;
            border-radius: var(--radius-lg);
        }

        @media (max-width: 520px) {
            .btn-lg {
                padding: 14px 28px;
                font-size: 16px;
            }
            .btn {
                white-space: normal;
            }
        }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            text-transform: uppercase;
            background: var(--clr-primary-dim);
            color: var(--clr-primary);
            border: 1px solid rgba(0, 212, 255, 0.2);
        }
        .badge-secondary {
            background: rgba(124, 58, 237, 0.2);
            color: var(--clr-secondary-hover);
            border-color: rgba(124, 58, 237, 0.25);
        }
        .badge-hot {
            background: rgba(239, 68, 68, 0.2);
            color: #f87171;
            border-color: rgba(239, 68, 68, 0.3);
        }

        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: var(--radius-sm);
            font-size: 12px;
            font-weight: 500;
            background: var(--clr-bg-card);
            color: var(--clr-text-muted);
            border: 1px solid var(--clr-border);
            transition: all var(--transition-speed) ease;
        }
        .tag:hover {
            border-color: var(--clr-primary);
            color: var(--clr-primary);
            background: var(--clr-primary-dim);
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 60px;
            height: 3px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--clr-primary), var(--clr-secondary));
            margin: 16px 0 24px;
        }
        .divider-center {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header / 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--clr-nav-bg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--clr-border);
            transition: background 0.3s ease;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--clr-text-white);
            text-decoration: none;
            letter-spacing: -0.5px;
        }
        .logo:hover {
            color: var(--clr-primary);
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            color: #fff;
            font-weight: 800;
            font-size: 20px;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list li a {
            font-size: 15px;
            font-weight: 500;
            color: var(--clr-text-light);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition-speed) ease;
            text-decoration: none;
        }
        .nav-list li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--clr-primary);
            border-radius: 4px;
            transition: width var(--transition-speed) ease;
            box-shadow: 0 0 10px var(--clr-primary);
        }
        .nav-list li a:hover {
            color: var(--clr-primary);
        }
        .nav-list li a:hover::after {
            width: 100%;
        }
        .nav-list li a.active {
            color: var(--clr-primary);
        }
        .nav-list li a.active::after {
            width: 100%;
        }

        .nav-cta {
            display: flex;
            align-items: center;
        }
        .nav-cta-mobile {
            display: none;
        }

        .mobile-toggle {
            display: none;
            font-size: 24px;
            color: var(--clr-text-white);
            padding: 8px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1px solid var(--clr-border);
            transition: all var(--transition-speed) ease;
        }
        .mobile-toggle:hover {
            border-color: var(--clr-primary);
            color: var(--clr-primary);
        }
        .mobile-toggle:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 4px;
        }

        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--clr-nav-bg);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                flex-direction: column;
                gap: 4px;
                padding: 20px 24px 32px;
                border-bottom: 1px solid var(--clr-border);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s ease;
                pointer-events: none;
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
                max-height: calc(100vh - var(--header-height));
                overflow-y: auto;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list li a {
                font-size: 18px;
                padding: 12px 0;
                display: block;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .nav-list li:last-child a {
                border-bottom: none;
            }
            .nav-list li a::after {
                display: none;
            }
            .nav-list li a.active {
                border-left: 3px solid var(--clr-primary);
                padding-left: 12px;
            }
            .nav-cta {
                display: none;
            }
            .nav-cta-mobile {
                display: block;
            }
            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 140px 0 80px;
            min-height: 420px;
            display: flex;
            align-items: center;
            background: var(--clr-bg-dark);
            overflow: hidden;
        }
        .page-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 0;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 10, 15, 0.88) 0%, rgba(10, 10, 15, 0.6) 50%, rgba(10, 10, 15, 0.92) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 52px;
            font-weight: 800;
            margin-bottom: 12px;
            background: linear-gradient(135deg, #ffffff 40%, var(--clr-primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero .hero-sub {
            font-size: 20px;
            color: var(--clr-text-muted);
            max-width: 640px;
            margin: 0 auto 24px;
            line-height: 1.6;
        }
        .page-hero .hero-meta {
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .page-hero .hero-meta span {
            font-size: 14px;
            color: var(--clr-text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .page-hero .hero-meta i {
            color: var(--clr-primary);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            color: var(--clr-text-muted);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--clr-text-muted);
            text-decoration: none;
            transition: color 0.3s;
        }
        .breadcrumb a:hover {
            color: var(--clr-primary);
        }
        .breadcrumb .sep {
            color: var(--clr-border);
        }
        .breadcrumb .current {
            color: var(--clr-primary);
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 120px 0 60px;
                min-height: 320px;
            }
            .page-hero h1 {
                font-size: 34px;
            }
            .page-hero .hero-sub {
                font-size: 16px;
            }
            .page-hero .hero-meta {
                gap: 12px;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 28px;
            }
            .page-hero .hero-sub {
                font-size: 14px;
            }
            .breadcrumb {
                font-size: 12px;
                flex-wrap: wrap;
            }
        }

        /* ===== Section 通用 ===== */
        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        .section-alt {
            background: var(--clr-bg-section);
        }
        .section-dark {
            background: var(--clr-bg-mid);
        }

        .section-title {
            font-size: 38px;
            font-weight: 800;
            text-align: center;
            margin-bottom: 8px;
        }
        .section-subtitle {
            text-align: center;
            color: var(--clr-text-muted);
            font-size: 17px;
            max-width: 600px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 32px;
            }
        }
        @media (max-width: 520px) {
            .section-title {
                font-size: 24px;
            }
            .section-subtitle {
                font-size: 14px;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card-grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        @media (max-width: 1024px) {
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .card-grid-2 {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== 赛事卡片 ===== */
        .event-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--clr-border);
            transition: all var(--transition-speed) ease;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .event-card:hover {
            border-color: var(--clr-primary);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-6px);
            background: var(--clr-bg-card-hover);
        }
        .event-card .card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--clr-bg-mid);
        }
        .event-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .event-card:hover .card-img img {
            transform: scale(1.05);
        }
        .event-card .card-img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }
        .event-card .card-img .card-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60%;
            background: linear-gradient(transparent, rgba(10, 10, 15, 0.85));
            z-index: 1;
        }
        .event-card .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .event-card .card-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--clr-text-white);
        }
        .event-card .card-body .card-meta {
            font-size: 13px;
            color: var(--clr-text-muted);
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 10px;
        }
        .event-card .card-body .card-meta i {
            color: var(--clr-primary);
            width: 16px;
        }
        .event-card .card-body p {
            font-size: 14px;
            color: var(--clr-text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }
        .event-card .card-body .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid var(--clr-border);
        }
        .event-card .card-body .card-footer .tag {
            font-size: 11px;
        }

        @media (max-width: 520px) {
            .event-card .card-body {
                padding: 16px 18px 20px;
            }
            .event-card .card-body h3 {
                font-size: 17px;
            }
        }

        /* ===== 资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 24px;
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            transition: all var(--transition-speed) ease;
        }
        .news-item:hover {
            border-color: var(--clr-primary-dim);
            background: var(--clr-bg-card-hover);
            transform: translateX(4px);
        }
        .news-item .news-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--clr-primary-dim);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--clr-primary);
            font-size: 18px;
        }
        .news-item .news-content {
            flex: 1;
        }
        .news-item .news-content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--clr-text-white);
            margin-bottom: 4px;
        }
        .news-item .news-content p {
            font-size: 14px;
            color: var(--clr-text-muted);
            line-height: 1.5;
            margin-bottom: 6px;
        }
        .news-item .news-content .news-meta {
            font-size: 12px;
            color: var(--clr-text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .news-item .news-content .news-meta i {
            color: var(--clr-primary);
            width: 14px;
        }

        @media (max-width: 520px) {
            .news-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px 18px;
            }
            .news-item .news-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .news-item .news-content h4 {
                font-size: 15px;
            }
        }

        /* ===== 统计区块 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .stat-item {
            padding: 32px 20px;
            background: var(--clr-bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--clr-border);
            transition: all var(--transition-speed) ease;
        }
        .stat-item:hover {
            border-color: var(--clr-primary);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .stat-item .stat-number {
            font-size: 44px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 15px;
            color: var(--clr-text-muted);
            margin-top: 6px;
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 34px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-item {
                padding: 24px 12px;
            }
            .stat-item .stat-number {
                font-size: 28px;
            }
            .stat-item .stat-label {
                font-size: 13px;
            }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            overflow: hidden;
            transition: all var(--transition-speed) ease;
        }
        .faq-item:hover {
            border-color: var(--clr-border-hover);
        }
        .faq-item .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--clr-text-white);
            transition: background 0.3s ease;
            user-select: none;
        }
        .faq-item .faq-question:hover {
            background: var(--clr-primary-dim);
        }
        .faq-item .faq-question i {
            transition: transform 0.3s ease;
            color: var(--clr-primary);
            font-size: 14px;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--clr-text-muted);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        @media (max-width: 520px) {
            .faq-item .faq-question {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                font-size: 14px;
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--clr-bg-mid);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.08), transparent 70%);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.08), transparent 70%);
            pointer-events: none;
        }
        .cta-box {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 40px;
            background: var(--clr-bg-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--clr-border);
            box-shadow: var(--shadow-card);
            max-width: 800px;
            margin: 0 auto;
        }
        .cta-box h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 17px;
            color: var(--clr-text-muted);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .cta-box .btn-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .cta-box {
                padding: 40px 24px;
            }
            .cta-box h2 {
                font-size: 26px;
            }
            .cta-box p {
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .cta-box {
                padding: 32px 18px;
            }
            .cta-box h2 {
                font-size: 22px;
            }
            .cta-box .btn-group {
                flex-direction: column;
                width: 100%;
            }
            .cta-box .btn-group .btn {
                width: 100%;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--clr-bg-mid);
            border-top: 1px solid var(--clr-border);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--clr-text-muted);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--clr-text-white);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--clr-text-muted);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;
        }
        .footer-col ul li a i {
            font-size: 10px;
            color: var(--clr-primary);
            transition: transform 0.3s ease;
        }
        .footer-col ul li a:hover {
            color: var(--clr-primary);
        }
        .footer-col ul li a:hover i {
            transform: translateX(4px);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            border-top: 1px solid var(--clr-border);
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--clr-text-muted);
        }
        .footer-bottom p a {
            color: var(--clr-text-muted);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .footer-bottom p a:hover {
            color: var(--clr-primary);
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--clr-bg-card);
            color: var(--clr-text-muted);
            font-size: 17px;
            border: 1px solid var(--clr-border);
            transition: all var(--transition-speed) ease;
            text-decoration: none;
        }
        .footer-social a:hover {
            background: var(--clr-primary-dim);
            color: var(--clr-primary);
            border-color: var(--clr-primary);
            transform: translateY(-3px);
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-social {
                justify-content: center;
            }
        }

        /* ===== 子分类标签组 ===== */
        .subcategory-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 20px;
        }
        .subcategory-tags .tag {
            padding: 8px 20px;
            font-size: 14px;
            border-radius: 50px;
            background: var(--clr-bg-card);
            border-color: var(--clr-border);
            color: var(--clr-text-light);
            font-weight: 500;
            cursor: default;
        }
        .subcategory-tags .tag i {
            color: var(--clr-primary);
            margin-right: 6px;
            font-size: 12px;
        }
        .subcategory-tags .tag:hover {
            background: var(--clr-primary-dim);
            border-color: var(--clr-primary);
            color: var(--clr-primary);
            cursor: pointer;
        }

        @media (max-width: 520px) {
            .subcategory-tags .tag {
                padding: 6px 14px;
                font-size: 12px;
            }
        }

        /* ===== 图文介绍区块 ===== */
        .intro-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-block .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--clr-border);
            box-shadow: var(--shadow-card);
            aspect-ratio: 4 / 3;
            background: var(--clr-bg-card);
        }
        .intro-block .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .intro-block .intro-image:hover img {
            transform: scale(1.03);
        }
        .intro-block .intro-text h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .intro-block .intro-text .divider {
            margin-left: 0;
        }
        .intro-block .intro-text p {
            font-size: 16px;
            color: var(--clr-text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .intro-block .intro-text .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 20px;
        }
        .intro-block .intro-text .intro-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--clr-text-light);
        }
        .intro-block .intro-text .intro-features li i {
            color: var(--clr-primary);
            font-size: 14px;
            width: 20px;
            text-align: center;
        }

        @media (max-width: 768px) {
            .intro-block {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .intro-block .intro-text h2 {
                font-size: 28px;
            }
            .intro-block .intro-text .intro-features {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .intro-block .intro-text h2 {
                font-size: 24px;
            }
            .intro-block .intro-text p {
                font-size: 14px;
            }
        }

        /* ===== 联系表单占位 ===== */
        #contact {
            scroll-margin-top: 100px;
        }

        /* ===== 动画辅助 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 选择高亮 ===== */
        ::selection {
            background: var(--clr-primary);
            color: #000;
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--clr-bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--clr-bg-card);
            border-radius: 10px;
            border: 1px solid var(--clr-border);
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--clr-bg-card-hover);
        }