/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0a0e27;
            --primary-light: #1a1a3e;
            --primary-dark: #060914;
            --accent: #ff6b35;
            --accent-hover: #e85a2a;
            --gold: #ffd700;
            --gold-light: #ffe44d;
            --bg: #f0f2f5;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #555;
            --text-muted: #888;
            --border: #e8e8ef;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 40px rgba(255, 107, 53, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height: 72px;
            --container: 1200px;
            --gap: 32px;
            --gap-sm: 20px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font: inherit;
            color: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: var(--primary);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 var(--gap);
        }
        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 var(--gap);
        }

        /* ===== 导航 ===== */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            transition: var(--transition);
        }
        header.scrolled {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.25);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
        }
        header.scrolled .nav-logo,
        header.scrolled .nav-link {
            color: var(--primary);
        }
        header.scrolled .nav-cta {
            background: var(--accent);
            color: #fff;
        }
        header.scrolled .nav-cta:hover {
            background: var(--accent-hover);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 var(--gap);
        }
        .nav-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .nav-logo i {
            font-size: 1.8rem;
            color: var(--gold);
        }
        .nav-logo span {
            background: linear-gradient(135deg, #fff 30%, var(--gold) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        header.scrolled .nav-logo span {
            background: linear-gradient(135deg, var(--primary) 30%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-logo:hover {
            opacity: 0.85;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
        }
        .nav-link.active {
            color: var(--gold);
            background: rgba(255, 215, 0, 0.12);
        }
        header.scrolled .nav-link {
            color: var(--text);
        }
        header.scrolled .nav-link:hover {
            background: rgba(0, 0, 0, 0.05);
            color: var(--accent);
        }
        header.scrolled .nav-link.active {
            color: var(--accent);
            background: rgba(255, 107, 53, 0.1);
        }
        .nav-cta {
            padding: 10px 26px;
            border-radius: 50px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 2px solid transparent;
            margin-left: 8px;
        }
        .nav-cta:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.35);
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: #fff;
            padding: 6px 10px;
            border-radius: var(--radius-xs);
            background: rgba(255, 255, 255, 0.1);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        header.scrolled .nav-toggle {
            color: var(--primary);
            background: rgba(0, 0, 0, 0.05);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-dark);
            overflow: hidden;
            padding: 120px 0 80px;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.5;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 39, 0.92) 0%, rgba(26, 26, 62, 0.7) 50%, rgba(10, 14, 39, 0.88) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
            padding: 0 var(--gap);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 22px;
            border-radius: 50px;
            background: rgba(255, 215, 0, 0.15);
            border: 1px solid rgba(255, 215, 0, 0.25);
            color: var(--gold);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 28px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            font-size: 0.9rem;
        }
        .hero-title {
            font-size: clamp(2.8rem, 8vw, 5.2rem);
            font-weight: 900;
            color: #fff;
            line-height: 1.08;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--gold) 0%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: clamp(1.05rem, 2vw, 1.35rem);
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-btn {
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-btn-primary {
            background: var(--accent);
            color: #fff;
            border: 2px solid var(--accent);
        }
        .hero-btn-primary:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(255, 107, 53, 0.4);
        }
        .hero-btn-secondary {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }
        .hero-btn-secondary:hover {
            border-color: var(--gold);
            color: var(--gold);
            transform: translateY(-3px);
            background: rgba(255, 215, 0, 0.08);
        }
        .hero-scroll {
            position: absolute;
            bottom: 36px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            color: rgba(255, 255, 255, 0.4);
            font-size: 1.6rem;
            animation: float 2.4s ease-in-out infinite;
        }
        @keyframes float {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(10px);
            }
        }

        /* ===== 板块通用 ===== */
        section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(255, 107, 53, 0.1);
            color: var(--accent);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 580px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-desc-wide {
            max-width: 720px;
        }

        /* ===== 特色板块 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(255, 107, 53, 0.15);
        }
        .feature-icon {
            width: 68px;
            height: 68px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
            color: #fff;
            transition: var(--transition);
        }
        .feature-card:nth-child(1) .feature-icon {
            background: linear-gradient(135deg, #ff6b35, #ff8a5c);
        }
        .feature-card:nth-child(2) .feature-icon {
            background: linear-gradient(135deg, #1a73e8, #4a9eff);
        }
        .feature-card:nth-child(3) .feature-icon {
            background: linear-gradient(135deg, #0f3460, #1a5276);
        }
        .feature-card:nth-child(4) .feature-icon {
            background: linear-gradient(135deg, #e94560, #ff6b81);
        }
        .feature-card:hover .feature-icon {
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== 赛事分类 ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }
        .category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            background: var(--bg-card);
            border: 1px solid var(--border);
            aspect-ratio: 4 / 3;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .category-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover img {
            transform: scale(1.06);
        }
        .category-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 14, 39, 0.85) 0%, transparent 60%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 24px 22px;
            transition: var(--transition);
        }
        .category-card:hover .category-overlay {
            background: linear-gradient(to top, rgba(10, 14, 39, 0.92) 0%, rgba(10, 14, 39, 0.2) 60%);
        }
        .category-overlay h3 {
            color: #fff;
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .category-overlay p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.88rem;
        }
        .category-tag {
            position: absolute;
            top: 16px;
            right: 16px;
            background: rgba(255, 107, 53, 0.9);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        /* ===== 资讯列表 ===== */
        .news-section {
            background: var(--bg);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap);
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .news-card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .news-card-image {
            transform: scale(1.02);
        }
        .news-card-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .news-card-tag {
            padding: 3px 12px;
            border-radius: 50px;
            background: rgba(255, 107, 53, 0.1);
            color: var(--accent);
            font-size: 0.78rem;
            font-weight: 600;
        }
        .news-card-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-card-title {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-title a {
            color: inherit;
        }
        .news-card-title a:hover {
            color: var(--accent);
        }
        .news-card-desc {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }
        .news-card-link {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--accent);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .news-card-link:hover {
            gap: 10px;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            font-size: 1.05rem;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .news-empty i {
            font-size: 2.4rem;
            margin-bottom: 16px;
            color: var(--text-muted);
            opacity: 0.4;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }
        .stats-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 215, 0, 0.2);
        }
        .stat-number {
            font-size: clamp(2.4rem, 4vw, 3.2rem);
            font-weight: 900;
            color: var(--gold);
            margin-bottom: 6px;
            line-height: 1.1;
        }
        .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            font-weight: 500;
        }

        /* ===== 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 48px;
            left: calc(12.5% + 16px);
            right: calc(12.5% + 16px);
            height: 2px;
            background: linear-gradient(to right, var(--accent), var(--gold), var(--accent));
            opacity: 0.2;
        }
        .step-card {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .step-number {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            background: linear-gradient(135deg, var(--accent), var(--gold));
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.25);
            transition: var(--transition);
        }
        .step-card:hover .step-number {
            transform: scale(1.1);
            box-shadow: 0 12px 36px rgba(255, 107, 53, 0.35);
        }
        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--primary);
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            max-width: 200px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-card);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 107, 53, 0.2);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            background: transparent;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-question:hover {
            background: rgba(255, 107, 53, 0.04);
        }
        .faq-question i {
            color: var(--accent);
            font-size: 0.9rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-title {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 18px 44px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 700;
            background: var(--accent);
            color: #fff;
            border: 2px solid var(--accent);
            transition: var(--transition);
        }
        .cta-btn:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(255, 107, 53, 0.4);
        }
        .cta-btn i {
            font-size: 1.1rem;
        }

        /* ===== 页脚 ===== */
        footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .nav-logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--gold);
            transform: translateX(4px);
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a:hover {
            color: var(--gold);
        }
        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .categories-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
                --gap: 20px;
                --gap-sm: 14px;
            }
            section {
                padding: 56px 0;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px var(--gap);
                gap: 4px;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid var(--border);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-link {
                color: var(--text);
                padding: 12px 18px;
                width: 100%;
                border-radius: var(--radius-xs);
            }
            .nav-link:hover {
                background: rgba(255, 107, 53, 0.06);
                color: var(--accent);
            }
            .nav-link.active {
                color: var(--accent);
                background: rgba(255, 107, 53, 0.1);
            }
            .nav-cta {
                width: 100%;
                text-align: center;
                margin-left: 0;
                margin-top: 8px;
            }
            .nav-toggle {
                display: block;
            }
            .hero {
                min-height: 92vh;
                padding: 100px 0 60px;
            }
            .hero-title {
                font-size: clamp(2.2rem, 10vw, 3.2rem);
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--gap-sm);
            }
            .feature-card {
                padding: 24px 18px;
            }
            .feature-icon {
                width: 54px;
                height: 54px;
                font-size: 1.4rem;
            }
            .categories-grid {
                grid-template-columns: 1fr;
                gap: var(--gap-sm);
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: var(--gap-sm);
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--gap-sm);
            }
            .stat-item {
                padding: 24px 12px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--gap-sm);
            }
            .step-card {
                padding: 16px 8px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .section-title {
                font-size: clamp(1.5rem, 5vw, 1.9rem);
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 18px;
                font-size: 0.9rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
            .cta-btn {
                padding: 14px 32px;
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            :root {
                --gap: 16px;
            }
            section {
                padding: 40px 0;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                gap: 20px;
            }
            .hero-title {
                font-size: clamp(1.8rem, 12vw, 2.6rem);
            }
            .hero-sub {
                font-size: 0.95rem;
            }
            .hero-btn {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
            .nav-logo {
                font-size: 1.3rem;
            }
            .nav-logo i {
                font-size: 1.4rem;
            }
        }

        /* ===== 工具 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-8 {
            gap: 8px;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0a1628;
            --primary-light: #132240;
            --primary-dark: #050e1a;
            --accent: #f0b429;
            --accent-hover: #d9a220;
            --accent-light: #fce8a0;
            --bg-body: #f4f6fa;
            --bg-card: #ffffff;
            --bg-section-alt: #eef1f7;
            --text-primary: #1a2332;
            --text-secondary: #4a5568;
            --text-muted: #8896a8;
            --text-inverse: #f0f2f5;
            --border-color: #e2e8f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(10, 22, 40, 0.06);
            --shadow-md: 0 8px 30px rgba(10, 22, 40, 0.10);
            --shadow-lg: 0 20px 50px rgba(10, 22, 40, 0.14);
            --shadow-glow: 0 0 40px rgba(240, 180, 41, 0.15);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
            --spacer: 4.5rem;
            --max-width: 1200px;
            --nav-height: 72px;
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        #site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(10, 22, 40, 0.55);
            backdrop-filter: blur(18px) saturate(1.4);
            -webkit-backdrop-filter: blur(18px) saturate(1.4);
            border-bottom: 1px solid rgba(240, 180, 41, 0.15);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
            transition: background var(--transition), box-shadow var(--transition);
        }

        #site-header.scrolled {
            background: rgba(10, 22, 40, 0.92);
            box-shadow: 0 6px 40px rgba(0, 0, 0, 0.35);
        }

        .nav-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            transition: opacity var(--transition);
        }
        .nav-logo i {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .nav-logo:hover {
            color: #fff;
            opacity: 0.85;
        }

        .nav-toggle {
            display: none;
            color: #fff;
            font-size: 1.5rem;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.08);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.18);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links .nav-link {
            color: rgba(255, 255, 255, 0.78);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
            transition: transform var(--transition);
        }
        .nav-links .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-links .nav-link.active {
            color: var(--accent);
            background: rgba(240, 180, 41, 0.12);
        }
        .nav-links .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            transition: all var(--transition);
            margin-left: 12px;
        }
        .nav-cta i {
            font-size: 0.85rem;
        }
        .nav-cta:hover {
            background: var(--accent-hover);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(240, 180, 41, 0.35);
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: var(--primary-dark);
            overflow: hidden;
        }

        .category-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.5;
            transform: scale(1.05);
            animation: heroZoom 20s ease-in-out infinite alternate;
        }

        @keyframes heroZoom {
            0% {
                transform: scale(1.05);
            }
            100% {
                transform: scale(1.15);
            }
        }

        .category-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(10, 22, 40, 0.88) 0%, rgba(10, 22, 40, 0.60) 50%, rgba(10, 22, 40, 0.92) 100%);
            z-index: 1;
        }

        .category-hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }

        .category-hero-content .hero-badge {
            display: inline-block;
            background: rgba(240, 180, 41, 0.18);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 2px;
            padding: 6px 22px;
            border-radius: 40px;
            border: 1px solid rgba(240, 180, 41, 0.25);
            margin-bottom: 24px;
            text-transform: uppercase;
        }

        .category-hero-content h1 {
            font-size: 3.8rem;
            font-weight: 900;
            color: #fff;
            line-height: 1.1;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .category-hero-content h1 span {
            color: var(--accent);
        }

        .category-hero-content p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 620px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .category-hero-content .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            transition: all var(--transition);
        }
        .btn-primary i {
            font-size: 0.9rem;
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(240, 180, 41, 0.35);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: all var(--transition);
        }
        .btn-outline i {
            font-size: 0.9rem;
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(240, 180, 41, 0.08);
            transform: translateY(-3px);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--spacer) 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: var(--primary);
            color: var(--text-inverse);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: #fff;
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: rgba(240, 180, 41, 0.12);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 1.5px;
            padding: 4px 18px;
            border-radius: 40px;
            border: 1px solid rgba(240, 180, 41, 0.18);
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .section-header h2 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-dark .section-header h2 {
            color: #fff;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            line-height: 1.7;
        }
        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== 分类简介 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .intro-text h3 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--primary);
        }
        .intro-text p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .intro-text .intro-features {
            margin-top: 24px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .intro-text .intro-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-primary);
            font-weight: 500;
        }
        .intro-text .intro-features li i {
            color: var(--accent);
            font-size: 1rem;
        }

        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            transform: perspective(800px) rotateY(-3deg);
            transition: transform var(--transition);
        }
        .intro-image:hover {
            transform: perspective(800px) rotateY(0deg);
        }
        .intro-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        /* ===== 赛事卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
            gap: 28px;
        }

        .sport-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border-color);
        }
        .sport-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(240, 180, 41, 0.2);
        }

        .sport-card-image {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .sport-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .sport-card:hover .sport-card-image img {
            transform: scale(1.08);
        }
        .sport-card-image .card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(10, 22, 40, 0.5) 0%, transparent 60%);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .sport-card:hover .card-overlay {
            opacity: 1;
        }
        .sport-card-image .card-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent);
            color: var(--primary);
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 40px;
            letter-spacing: 0.5px;
        }

        .sport-card-body {
            padding: 22px 24px 26px;
        }
        .sport-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .sport-card-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .sport-card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .sport-card-body .card-meta i {
            margin-right: 4px;
        }
        .sport-card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--accent);
            margin-top: 12px;
            transition: gap var(--transition);
        }
        .sport-card-body .card-link:hover {
            gap: 12px;
            color: var(--accent-hover);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }
        .stat-item {
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(240, 180, 41, 0.2);
            transform: translateY(-4px);
        }
        .stat-item .stat-icon {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .stat-item .stat-number .stat-suffix {
            font-size: 1.6rem;
            color: var(--accent);
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 8px;
            font-weight: 500;
        }

        /* ===== 指南详情 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .guide-step {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .guide-step:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(240, 180, 41, 0.15);
        }
        .guide-step .step-number {
            font-size: 3rem;
            font-weight: 900;
            color: rgba(240, 180, 41, 0.12);
            position: absolute;
            top: 12px;
            right: 20px;
            line-height: 1;
            font-family: sans-serif;
        }
        .guide-step .step-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 18px;
            display: inline-block;
        }
        .guide-step h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--primary);
            position: relative;
            z-index: 1;
        }
        .guide-step p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(240, 180, 41, 0.2);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 20px 28px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            list-style: none;
            transition: background var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 1.6rem;
            font-weight: 300;
            color: var(--accent);
            transition: transform var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item[open] summary {
            background: rgba(240, 180, 41, 0.04);
        }
        .faq-item .faq-answer {
            padding: 0 28px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 64px 24px;
        }
        .cta-inner h2 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-inner .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== 页脚 ===== */
        footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
            border-top: 1px solid rgba(240, 180, 41, 0.08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand .nav-logo {
            font-size: 1.3rem;
            margin-bottom: 16px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
            margin-bottom: 20px;
        }

        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary);
            transform: translateY(-3px);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            opacity: 0.9;
        }
        .footer-col ul li {
            margin-bottom: 12px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }
        .footer-col ul li a i {
            font-size: 0.75rem;
            width: 18px;
            color: var(--accent);
            opacity: 0.6;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom-links {
            display: flex;
            gap: 24px;
        }
        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.35);
            transition: color var(--transition);
        }
        .footer-bottom-links a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-grid {
                grid-template-columns: 1fr 1fr;
            }
            .category-hero-content h1 {
                font-size: 2.8rem;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(10, 22, 40, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px 28px;
                gap: 12px;
                border-bottom: 2px solid rgba(240, 180, 41, 0.1);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
                pointer-events: none;
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-links .nav-link {
                font-size: 1.1rem;
                padding: 14px 20px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links .nav-link::after {
                display: none;
            }
            .nav-cta {
                width: 100%;
                justify-content: center;
                margin-left: 0;
                margin-top: 8px;
                padding: 14px 20px;
            }

            .category-hero {
                min-height: 60vh;
                padding: 100px 20px 60px;
            }
            .category-hero-content h1 {
                font-size: 2.2rem;
            }
            .category-hero-content p {
                font-size: 1rem;
            }

            .section {
                padding: 3rem 0;
            }
            .section-header h2 {
                font-size: 1.9rem;
            }
            .section-header p {
                font-size: 1rem;
            }

            .intro-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .intro-text .intro-features {
                grid-template-columns: 1fr;
            }
            .intro-image img {
                height: 240px;
            }

            .card-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .sport-card-image {
                height: 150px;
            }
            .sport-card-body {
                padding: 16px 18px 20px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                padding: 24px 12px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }

            .guide-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .faq-item summary {
                padding: 16px 20px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 20px 16px;
            }

            .cta-inner h2 {
                font-size: 1.8rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .nav-logo span {
                font-size: 1.1rem;
            }
            .nav-logo i {
                font-size: 1.2rem;
            }

            .category-hero-content h1 {
                font-size: 1.8rem;
            }

            .card-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }

            .section-header h2 {
                font-size: 1.6rem;
            }

            .cta-inner h2 {
                font-size: 1.5rem;
            }

            .container {
                padding: 0 16px;
            }
            .nav-inner {
                padding: 0 16px;
            }
        }

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

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --accent: #f0c040;
            --accent-hover: #e0b030;
            --accent-glow: rgba(240, 192, 64, 0.3);
            --bg-dark: #0b0f1e;
            --bg-section: #f8f9fc;
            --bg-card: #ffffff;
            --text-main: #1a1a2e;
            --text-light: #4a4a6a;
            --text-weak: #8888a0;
            --border-light: #e8e8f0;
            --border-card: #f0f0f5;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
            --shadow-glow: 0 0 40px rgba(240, 192, 64, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-dark);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; border: none; outline: none; }
        ul { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-main); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        h4 { font-size: 1.1rem; }

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

        /* ===== Header / Navigation ===== */
        #site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(11, 15, 30, 0.75);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            box-shadow: 0 4px 30px rgba(0,0,0,0.2);
            transition: background var(--transition), box-shadow var(--transition);
        }
        #site-header.scrolled {
            background: rgba(11, 15, 30, 0.92);
            box-shadow: 0 8px 40px rgba(0,0,0,0.35);
        }
        .nav-inner {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .nav-logo i { color: var(--accent); font-size: 1.6rem; }
        .nav-logo span { background: linear-gradient(135deg, #fff 60%, var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-logo:hover { color: #fff; opacity: 0.9; }
        .nav-toggle { display: none; color: #fff; font-size: 1.5rem; padding: 8px; border-radius: var(--radius-sm); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .nav-link {
            color: rgba(255,255,255,0.75);
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
            text-decoration: none;
        }
        .nav-link:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav-link.active { color: #fff; background: rgba(240,192,64,0.15); }
        .nav-link.active::after { content: ''; position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; border-radius: 2px; background: var(--accent); }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 100px;
            background: linear-gradient(135deg, var(--accent), #e0a800);
            color: #1a1a2e;
            font-weight: 700;
            font-size: 0.95rem;
            text-decoration: none;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(240,192,64,0.25);
            margin-left: 8px;
        }
        .nav-cta:hover { background: linear-gradient(135deg, #e0b030, #c89400); color: #1a1a2e; transform: translateY(-2px); box-shadow: 0 8px 30px rgba(240,192,64,0.35); }

        /* ===== Hero / Banner ===== */
        .article-hero {
            position: relative;
            padding: calc(var(--header-height) + 60px) 0 80px;
            background: var(--bg-dark);
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .article-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.3;
            z-index: 0;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11,15,30,0.6) 0%, rgba(11,15,30,0.9) 70%, var(--bg-dark) 100%);
            z-index: 1;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            margin-bottom: 20px;
        }
        .article-hero-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(240,192,64,0.15);
            color: var(--accent);
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(240,192,64,0.2);
        }
        .article-hero-date {
            color: var(--text-weak);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-hero h1 {
            color: #fff;
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            line-height: 1.25;
            max-width: 900px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .article-hero-desc {
            color: rgba(255,255,255,0.7);
            font-size: 1.1rem;
            margin-top: 16px;
            max-width: 720px;
            line-height: 1.6;
        }

        /* ===== Article Main ===== */
        .article-main {
            background: var(--bg-section);
            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: 48px 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-main);
        }
        .article-body .content p { margin-bottom: 1.5em; }
        .article-body .content h2, .article-body .content h3 { margin-top: 1.5em; margin-bottom: 0.6em; }
        .article-body .content ul, .article-body .content ol { margin-bottom: 1.5em; padding-left: 1.5em; }
        .article-body .content li { margin-bottom: 0.5em; }
        .article-body .content img { border-radius: var(--radius-md); margin: 1.5em 0; }
        .article-body .content a { color: var(--primary-light); text-decoration: underline; }
        .article-body .content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(240,192,64,0.06);
            padding: 16px 24px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-footer-meta {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border-light);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-section);
            color: var(--text-light);
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.85rem;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .article-tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-weak);
            font-size: 0.9rem;
        }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-section);
            color: var(--text-light);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .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-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i { color: var(--accent); }
        .sidebar-list li { margin-bottom: 12px; }
        .sidebar-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-main);
            font-size: 0.95rem;
            transition: all var(--transition);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: var(--bg-section);
            border: 1px solid var(--border-light);
        }
        .sidebar-list a:hover { color: var(--primary); border-color: var(--primary-light); transform: translateX(4px); }
        .sidebar-list a i { color: var(--accent); font-size: 0.8rem; margin-top: 4px; flex-shrink: 0; }
        .sidebar-cta {
            text-align: center;
        }
        .sidebar-cta p { color: var(--text-light); font-size: 0.95rem; margin-bottom: 16px; }
        .sidebar-cta .btn-primary { width: 100%; justify-content: center; }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 40px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
        }
        .not-found-box i { font-size: 4rem; color: var(--accent); margin-bottom: 20px; display: block; }
        .not-found-box h2 { font-size: 1.8rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-light); margin-bottom: 24px; font-size: 1.05rem; }
        .not-found-box .btn-primary { display: inline-flex; }

        /* ===== Related Section ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-dark);
        }
        .related-section .section-title { color: #fff; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .related-card {
            background: rgba(255,255,255,0.04);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(255,255,255,0.06);
            transition: all var(--transition);
        }
        .related-card:hover { transform: translateY(-6px); border-color: rgba(240,192,64,0.2); box-shadow: 0 12px 40px rgba(0,0,0,0.3); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
        .related-card-body { padding: 20px; }
        .related-card-body h4 { color: #fff; font-size: 1rem; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card-body p { color: rgba(255,255,255,0.55); font-size: 0.85rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; font-size: 0.8rem; color: rgba(255,255,255,0.4); }
        .related-card-meta .badge { background: rgba(240,192,64,0.12); color: var(--accent); padding: 2px 10px; border-radius: 100px; font-size: 0.75rem; }

        /* ===== Features ===== */
        .features-section {
            padding: 80px 0;
            background: var(--bg-section);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 40px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            transition: all var(--transition);
        }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--accent); }
        .feature-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(240,192,64,0.12), rgba(240,192,64,0.04));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--accent);
        }
        .feature-card h4 { margin-bottom: 12px; }
        .feature-card p { color: var(--text-light); font-size: 0.95rem; line-height: 1.6; }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg-dark);
        }
        .faq-section .section-title { color: #fff; }
        .faq-list {
            max-width: 800px;
            margin: 40px auto 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: rgba(255,255,255,0.04);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.06);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: rgba(240,192,64,0.15); }
        .faq-question {
            padding: 20px 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover { background: rgba(255,255,255,0.03); }
        .faq-question i { color: var(--accent); transition: transform var(--transition); font-size: 0.9rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 28px;
            color: rgba(255,255,255,0.65);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 28px 24px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-section);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.06;
        }
        .cta-box {
            position: relative;
            z-index: 1;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            border-radius: var(--radius-xl);
            padding: 64px 48px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }
        .cta-box h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: 16px; }
        .cta-box p { color: rgba(255,255,255,0.75); font-size: 1.1rem; max-width: 600px; margin: 0 auto 32px; }
        .cta-box .btn-primary { font-size: 1.1rem; padding: 16px 48px; background: var(--accent); color: #1a1a2e; }
        .cta-box .btn-primary:hover { background: var(--accent-hover); transform: translateY(-3px); box-shadow: 0 12px 40px rgba(240,192,64,0.3); }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 100px;
            background: linear-gradient(135deg, var(--accent), #e0a800);
            color: #1a1a2e;
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(240,192,64,0.2);
            border: none;
        }
        .btn-primary:hover { background: linear-gradient(135deg, #e0b030, #c89400); color: #1a1a2e; transform: translateY(-2px); box-shadow: 0 8px 30px rgba(240,192,64,0.3); }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 100px;
            border: 2px solid rgba(255,255,255,0.2);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            transition: all var(--transition);
            background: transparent;
        }
        .btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(240,192,64,0.06); }

        /* ===== Section Title ===== */
        .section-title {
            text-align: center;
            margin-bottom: 16px;
            font-weight: 800;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 8px;
        }
        .section-subtitle.light { color: rgba(255,255,255,0.6); }

        /* ===== Footer ===== */
        footer {
            background: #080b17;
            color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
            border-top: 1px solid rgba(255,255,255,0.04);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .nav-logo { margin-bottom: 16px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.5); max-width: 360px; }
        .footer-social { display: flex; gap: 12px; margin-top: 20px; }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.6);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .footer-social a:hover { background: var(--accent); color: #1a1a2e; transform: translateY(-2px); }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul a {
            color: rgba(255,255,255,0.5);
            font-size: 0.9rem;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
        .footer-col ul a i { width: 16px; font-size: 0.8rem; color: var(--accent); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom-links { display: flex; gap: 20px; }
        .footer-bottom-links a { color: rgba(255,255,255,0.35); font-size: 0.85rem; transition: color var(--transition); }
        .footer-bottom-links a:hover { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            .nav-toggle { display: block; }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(11,15,30,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid rgba(255,255,255,0.06);
                box-shadow: 0 20px 60px rgba(0,0,0,0.4);
            }
            .nav-links.open { display: flex; }
            .nav-link { width: 100%; padding: 12px 16px; }
            .nav-cta { width: 100%; justify-content: center; margin-left: 0; margin-top: 8px; }
            .article-hero { padding: calc(var(--header-height) + 40px) 0 50px; min-height: auto; }
            .article-body { padding: 28px 20px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .footer-bottom-links { justify-content: center; }
            .cta-box { padding: 40px 24px; }
            .article-hero h1 { font-size: 1.6rem; }
            .sidebar-card { padding: 20px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-body { padding: 20px 16px; }
            .article-footer-meta { flex-direction: column; align-items: flex-start; }
            .related-card img { height: 140px; }
            .feature-card { padding: 24px 16px; }
            .faq-question { padding: 16px 18px; font-size: 0.95rem; }
            .faq-answer { padding: 0 18px; font-size: 0.9rem; }
            .faq-item.active .faq-answer { padding: 0 18px 18px; }
            .cta-box h2 { font-size: 1.3rem; }
            .cta-box .btn-primary { padding: 14px 28px; font-size: 1rem; width: 100%; justify-content: center; }
            .not-found-box { padding: 40px 20px; }
            .nav-logo span { font-size: 1.1rem; }
            .nav-logo i { font-size: 1.3rem; }
        }

        /* ===== Focus & Accessibility ===== */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-primary:focus-visible, .nav-cta:focus-visible { outline-color: #fff; }