/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6c3cf1;
            --primary-dark: #5228c7;
            --primary-light: #8f6ff5;
            --secondary: #f53c7c;
            --secondary-light: #ff6b9d;
            --accent: #00d4aa;
            --accent-glow: rgba(0, 212, 170, 0.3);
            --bg-dark: #0a0a1a;
            --bg-card: #12122a;
            --bg-card-hover: #1a1a3a;
            --bg-section: #0e0e24;
            --bg-gradient: linear-gradient(135deg, #0a0a1a 0%, #1a0a30 50%, #0a0a1a 100%);
            --text-primary: #f0f0ff;
            --text-secondary: #b0b0d0;
            --text-weak: #7070a0;
            --border-color: rgba(108, 60, 241, 0.25);
            --border-glow: rgba(108, 60, 241, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 40px rgba(108, 60, 241, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --nav-height: 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);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== 导航 ===== */
        .navbar {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 48px);
            max-width: var(--container-max);
            height: var(--nav-height);
            background: rgba(10, 10, 30, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-color);
            border-radius: 60px;
            padding: 0 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            z-index: 1000;
            box-shadow: 0 4px 32px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.05);
            transition: var(--transition);
        }
        .navbar.scrolled {
            top: 8px;
            background: rgba(10, 10, 30, 0.95);
            box-shadow: 0 8px 48px rgba(0, 0, 0, 0.7);
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }
        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            box-shadow: 0 0 20px rgba(108, 60, 241, 0.3);
        }
        .navbar-brand .brand-text {
            background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .navbar-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .navbar-links a {
            padding: 8px 18px;
            border-radius: 40px;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .navbar-links a:hover {
            color: var(--text-primary);
            background: rgba(108, 60, 241, 0.15);
        }
        .navbar-links a.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 4px 20px rgba(108, 60, 241, 0.3);
        }
        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .navbar-actions .btn-ghost {
            padding: 8px 20px;
            border-radius: 40px;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .navbar-actions .btn-ghost:hover {
            color: var(--text-primary);
            border-color: var(--primary);
            background: rgba(108, 60, 241, 0.1);
        }
        .navbar-actions .btn-primary {
            padding: 8px 24px;
            border-radius: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 4px 20px rgba(108, 60, 241, 0.3);
            transition: var(--transition);
        }
        .navbar-actions .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(108, 60, 241, 0.45);
        }
        .navbar-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
        }
        .navbar-toggle span {
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        @media (max-width: 768px) {
            .navbar { padding: 0 16px; top: 12px; width: calc(100% - 24px); }
            .navbar-links { display: none; }
            .navbar-actions .btn-ghost, .navbar-actions .btn-primary { display: none; }
            .navbar-toggle { display: flex; }
            .navbar-links.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: calc(var(--nav-height) + 8px);
                left: 8px;
                right: 8px;
                background: rgba(10, 10, 30, 0.98);
                backdrop-filter: blur(20px);
                border: 1px solid var(--border-color);
                border-radius: var(--radius-md);
                padding: 12px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
            }
            .navbar-links.mobile-open a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            background: var(--bg-gradient);
            overflow: hidden;
            padding-top: var(--nav-height);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(108, 60, 241, 0.2) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 50%, rgba(245, 60, 124, 0.15) 0%, transparent 60%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
            padding-top: 40px;
            padding-bottom: 60px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 40px;
            background: rgba(108, 60, 241, 0.15);
            border: 1px solid rgba(108, 60, 241, 0.3);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
            backdrop-filter: blur(10px);
        }
        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(0.8); }
        }
        .hero h1 {
            font-size: clamp(40px, 7vw, 72px);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #fff 0%, var(--primary-light) 40%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: clamp(16px, 2vw, 20px);
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-actions .btn-primary {
            padding: 14px 40px;
            border-radius: 60px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            box-shadow: 0 8px 32px rgba(108, 60, 241, 0.35);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .hero-actions .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 48px rgba(108, 60, 241, 0.5);
        }
        .hero-actions .btn-outline {
            padding: 14px 40px;
            border-radius: 60px;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.03);
        }
        .hero-actions .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(108, 60, 241, 0.1);
            transform: translateY(-3px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 48px;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-stats .stat-item {
            text-align: center;
        }
        .hero-stats .stat-number {
            font-size: 32px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-stats .stat-label {
            font-size: 14px;
            color: var(--text-weak);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero { min-height: 90vh; }
            .hero-stats { gap: 24px; }
            .hero-stats .stat-number { font-size: 26px; }
        }

        /* ===== Section 通用 ===== */
        .section {
            padding: 80px 0;
            position: relative;
        }
        .section-dark {
            background: var(--bg-section);
        }
        .section-darker {
            background: var(--bg-dark);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            margin-bottom: 12px;
        }
        .section-header h2 .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto;
        }
        .section-subtitle {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            background: rgba(108, 60, 241, 0.12);
            border: 1px solid rgba(108, 60, 241, 0.2);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        /* ===== 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
        }
        .category-card {
            padding: 28px 20px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }
        .category-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .category-card:hover::before { opacity: 1; }
        .category-card .icon {
            font-size: 32px;
            margin-bottom: 12px;
        }
        .category-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
        }
        .category-card p {
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 6px;
        }
        .category-card .badge-count {
            display: inline-block;
            margin-top: 10px;
            padding: 2px 12px;
            border-radius: 20px;
            background: rgba(108, 60, 241, 0.15);
            color: var(--primary-light);
            font-size: 12px;
            font-weight: 600;
        }
        @media (max-width: 520px) {
            .category-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .category-card { padding: 20px 12px; }
        }

        /* ===== 内容卡片 ===== */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 24px;
        }
        .content-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .content-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .content-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            transition: var(--transition);
        }
        .content-card:hover .card-img {
            transform: scale(1.03);
        }
        .content-card .card-body {
            padding: 20px 24px 24px;
        }
        .content-card .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            background: rgba(108, 60, 241, 0.12);
            color: var(--primary-light);
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .content-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-card .card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }
        .content-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-weak);
        }
        .content-card .card-meta .date {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        @media (max-width: 520px) {
            .content-grid { grid-template-columns: 1fr; }
        }

        /* ===== 信息板块（图文） ===== */
        .info-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .info-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .info-image img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        .info-image .overlay-glow {
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, rgba(108, 60, 241, 0.1), transparent 60%);
            pointer-events: none;
        }
        .info-content h3 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 800;
            margin-bottom: 16px;
        }
        .info-content p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .info-content .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .info-content .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--text-primary);
        }
        .info-content .feature-list li .check {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(0, 212, 170, 0.15);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .info-grid { grid-template-columns: 1fr; gap: 32px; }
            .info-image img { height: 260px; }
            .info-content { order: -1; }
        }

        /* ===== 数据 / 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .step-card .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 20px rgba(108, 60, 241, 0.3);
        }
        .step-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .step-card .step-icon {
            font-size: 36px;
            margin-bottom: 12px;
        }

        /* ===== 数据仪表板 ===== */
        .dashboard-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
        }
        .dash-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .dash-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .dash-card .dash-number {
            font-size: 36px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .dash-card .dash-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        .dash-card .dash-trend {
            display: inline-block;
            margin-top: 8px;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
        }
        .dash-card .dash-trend.up {
            background: rgba(0, 212, 170, 0.12);
            color: var(--accent);
        }
        .dash-card .dash-trend.down {
            background: rgba(245, 60, 124, 0.12);
            color: var(--secondary);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-item .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            transition: var(--transition);
            user-select: none;
            gap: 16px;
        }
        .faq-item .faq-question::after {
            content: '+';
            font-size: 22px;
            color: var(--primary-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question::after {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }
        .faq-item .faq-answer p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        @media (max-width: 520px) {
            .faq-item .faq-question { padding: 16px 18px; font-size: 15px; }
            .faq-item .faq-answer { padding: 0 18px; }
            .faq-item.active .faq-answer { padding: 0 18px 16px; }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-gradient);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            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;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 80px 24px;
        }
        .cta-section h2 {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-secondary);
            font-size: 18px;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .cta-section .btn-primary {
            padding: 16px 44px;
            border-radius: 60px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            box-shadow: 0 8px 32px rgba(108, 60, 241, 0.35);
            transition: var(--transition);
        }
        .cta-section .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 48px rgba(108, 60, 241, 0.5);
        }
        .cta-section .btn-outline {
            padding: 16px 44px;
            border-radius: 60px;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.03);
        }
        .cta-section .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(108, 60, 241, 0.1);
            transform: translateY(-3px);
        }

        /* ===== 标签云 ===== */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tags-cloud .tag {
            padding: 6px 18px;
            border-radius: 40px;
            background: rgba(108, 60, 241, 0.08);
            border: 1px solid rgba(108, 60, 241, 0.15);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }
        .tags-cloud .tag:hover {
            background: rgba(108, 60, 241, 0.18);
            border-color: var(--primary);
            color: var(--text-primary);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            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-text {
            font-size: 22px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer-brand p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 14px;
            color: var(--text-weak);
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-weak);
        }
        .footer-bottom .social-links {
            display: flex;
            gap: 12px;
        }
        .footer-bottom .social-links a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-weak);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-bottom .social-links a:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(108, 60, 241, 0.1);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 空状态 ===== */
        .empty-state {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-weak);
        }
        .empty-state .empty-icon {
            font-size: 48px;
            margin-bottom: 16px;
            opacity: 0.5;
        }
        .empty-state p {
            font-size: 16px;
        }

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

        /* ===== 实用工具 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .mt-1 { margin-top: 8px; }
        .mt-2 { margin-top: 16px; }
        .mt-3 { margin-top: 24px; }
        .mb-2 { margin-bottom: 16px; }
        .mb-3 { margin-bottom: 24px; }
        .text-center { text-align: center; }
        .text-secondary { color: var(--text-secondary); }
        .gap-2 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== 分割线 ===== */
        .divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin: 0 auto 20px;
        }

        @media (max-width: 1024px) {
            .section { padding: 60px 0; }
        }
        @media (max-width: 520px) {
            .section { padding: 40px 0; }
            .section-header { margin-bottom: 32px; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #00d4ff;
  --primary-dark: #009dcc;
  --primary-glow: rgba(0, 212, 255, 0.3);
  --secondary: #7c3aed;
  --secondary-glow: rgba(124, 58, 237, 0.3);
  --accent: #f59e0b;
  --accent-glow: rgba(245, 158, 11, 0.25);
  --bg-dark: #0a0e1a;
  --bg-card: #111827;
  --bg-card-hover: #1a2332;
  --bg-surface: #0f172a;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(0, 212, 255, 0.15);
  --border-glow: rgba(0, 212, 255, 0.25);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --container-max: 1240px;
  --header-height: 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);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; }
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}

/* ===== 导航 ===== */
.navbar {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 32px);
  max-width: var(--container-max);
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  background: rgba(10, 14, 26, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-color);
  border-radius: 60px;
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transition: background var(--transition), box-shadow var(--transition);
}
.navbar.scrolled { background: rgba(10, 14, 26, 0.94); box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6); }
.navbar-brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon { font-size: 24px; color: var(--primary); text-shadow: 0 0 16px var(--primary-glow); }
.brand-text { font-size: 20px; font-weight: 700; color: var(--text-primary); letter-spacing: 0.5px; white-space: nowrap; }
.brand-text span { color: var(--primary); }
.navbar-links { display: flex; align-items: center; gap: 6px; }
.navbar-links a {
  padding: 8px 20px;
  border-radius: 40px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  position: relative;
  white-space: nowrap;
}
.navbar-links a:hover { color: var(--text-primary); background: rgba(255,255,255,0.06); }
.navbar-links a.active {
  color: var(--bg-dark);
  background: var(--primary);
  box-shadow: 0 0 20px var(--primary-glow);
  font-weight: 600;
}
.navbar-actions { display: flex; align-items: center; gap: 12px; }
.btn-ghost {
  padding: 8px 22px;
  border-radius: 40px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  border: 1px solid var(--border-glow);
  background: transparent;
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
}
.btn-ghost:hover { background: rgba(0, 212, 255, 0.08); box-shadow: 0 0 20px var(--primary-glow); }
.btn-primary {
  padding: 8px 22px;
  border-radius: 40px;
  font-size: 14px;
  font-weight: 600;
  color: var(--bg-dark);
  background: var(--primary);
  box-shadow: 0 0 16px var(--primary-glow);
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary:hover { background: var(--primary-dark); box-shadow: 0 0 32px var(--primary-glow); transform: translateY(-1px); }
.navbar-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; }
.navbar-toggle span { display: block; width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: all var(--transition); }
@media (max-width: 896px) {
  .navbar-links { display: none; position: absolute; top: calc(100% + 8px); left: 16px; right: 16px; background: rgba(10, 14, 26, 0.96); backdrop-filter: blur(20px); border: 1px solid var(--border-color); border-radius: 20px; padding: 16px; flex-direction: column; gap: 4px; box-shadow: var(--shadow-lg); }
  .navbar-links.open { display: flex; }
  .navbar-links a { width: 100%; text-align: center; padding: 12px 20px; font-size: 15px; }
  .navbar-actions .btn-ghost, .navbar-actions .btn-primary { display: none; }
  .navbar-toggle { display: flex; }
}

/* ===== Hero ===== */
.page-hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  background: linear-gradient(160deg, #0a0e1a 0%, #0f1a2e 40%, #0d1117 100%);
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.25;
  z-index: 0;
}
.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.08) 0%, transparent 50%, rgba(124,58,237,0.06) 100%);
  z-index: 1;
}
.page-hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: 40px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid var(--border-glow);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 20px;
  animation: fadeUp 0.8s ease forwards;
}
.hero-badge i { font-size: 14px; }
.page-hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #f1f5f9 0%, var(--primary) 70%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeUp 0.8s ease 0.1s forwards;
  opacity: 0;
}
.page-hero p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 32px;
  animation: fadeUp 0.8s ease 0.2s forwards;
  opacity: 0;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; animation: fadeUp 0.8s ease 0.3s forwards; opacity: 0; }
.hero-actions .btn-primary { padding: 14px 36px; font-size: 16px; }
.hero-actions .btn-ghost { padding: 14px 36px; font-size: 16px; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }

/* ===== 通用板块 ===== */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-surface); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.section-header .subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}
.section-header .section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: 40px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid var(--border-glow);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.card-grid-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card-grid-4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* ===== 分类卡片 ===== */
.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0;
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
}
.category-card:hover { transform: translateY(-6px); border-color: var(--border-glow); box-shadow: var(--shadow-glow), var(--shadow-md); }
.category-card .card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.category-card:hover .card-img { transform: scale(1.04); }
.category-card .card-body { padding: 20px 22px 24px; }
.category-card .card-body h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 6px; color: var(--text-primary); }
.category-card .card-body p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 14px; line-height: 1.6; }
.card-tag {
  display: inline-block;
  padding: 2px 12px;
  border-radius: 40px;
  font-size: 12px;
  font-weight: 500;
  background: rgba(0, 212, 255, 0.1);
  color: var(--primary);
  border: 1px solid var(--border-glow);
}
.category-card .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px 20px;
}
.card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}
.card-link:hover { gap: 12px; color: var(--primary-dark); }

/* ===== 热门赛事卡片 ===== */
.event-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.event-card:hover { transform: translateY(-4px); border-color: var(--border-glow); box-shadow: var(--shadow-glow), var(--shadow-md); }
.event-card .event-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.event-card:hover .event-img { transform: scale(1.04); }
.event-card .event-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.event-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.event-badge {
  padding: 2px 12px;
  border-radius: 40px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.event-badge.live { background: rgba(239, 68, 68, 0.15); color: #ef4444; border: 1px solid rgba(239,68,68,0.2); }
.event-badge.upcoming { background: rgba(0, 212, 255, 0.1); color: var(--primary); border: 1px solid var(--border-glow); }
.event-badge.finished { background: rgba(148, 163, 184, 0.1); color: var(--text-muted); border: 1px solid rgba(148,163,184,0.15); }
.event-date { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }
.event-card .event-body h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 6px; color: var(--text-primary); }
.event-card .event-body p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 12px; line-height: 1.6; flex: 1; }
.event-stats { display: flex; gap: 16px; padding-top: 12px; border-top: 1px solid rgba(255,255,255,0.04); }
.event-stats span { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }
.event-stats i { color: var(--primary); font-size: 14px; }

/* ===== 数据统计 ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 28px;
  text-align: center;
}
.stat-item {
  padding: 36px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}
.stat-item:hover { border-color: var(--border-glow); box-shadow: var(--shadow-glow); transform: translateY(-2px); }
.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--primary);
  text-shadow: 0 0 30px var(--primary-glow);
  line-height: 1.1;
  margin-bottom: 6px;
}
.stat-label { font-size: 0.95rem; color: var(--text-secondary); }
.stat-icon { font-size: 28px; color: var(--primary); margin-bottom: 12px; opacity: 0.7; }

/* ===== 流程步骤 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
  counter-reset: step;
}
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 24px 28px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
}
.step-card:hover { border-color: var(--border-glow); box-shadow: var(--shadow-glow); transform: translateY(-4px); }
.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin: 0 auto 16px;
  box-shadow: 0 0 24px var(--primary-glow);
}
.step-card h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; color: var(--text-primary); }
.step-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item:hover { border-color: var(--border-glow); }
.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: transparent;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition);
}
.faq-question:hover { background: rgba(255,255,255,0.02); }
.faq-question i { color: var(--primary); transition: transform var(--transition); font-size: 14px; }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 20px; }
.faq-answer p { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7; }

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.04) 0%, rgba(124,58,237,0.04) 100%);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.cta-box {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  text-align: center;
  box-shadow: var(--shadow-glow);
}
.cta-box h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); margin-bottom: 12px; }
.cta-box p { font-size: 1rem; color: var(--text-secondary); margin-bottom: 28px; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-box .btn-primary { padding: 14px 40px; font-size: 16px; }
.cta-box .btn-ghost { padding: 14px 40px; font-size: 16px; }

/* ===== 页脚 ===== */
.footer {
  background: var(--bg-card);
  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-text { font-size: 1.3rem; font-weight: 700; color: var(--text-primary); display: block; margin-bottom: 12px; }
.footer-brand .logo-text span { color: var(--primary); }
.footer-brand p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; max-width: 360px; }
.footer-col h4 { font-size: 0.95rem; font-weight: 600; color: var(--text-primary); margin-bottom: 16px; }
.footer-col a {
  display: block;
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 5px 0;
  transition: color var(--transition), padding-left var(--transition);
}
.footer-col a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-bottom p { font-size: 0.85rem; color: var(--text-muted); }
.social-links { display: flex; gap: 12px; }
.social-links a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}
.social-links a:hover { color: var(--primary); border-color: var(--primary-glow); background: rgba(0,212,255,0.08); box-shadow: 0 0 16px var(--primary-glow); transform: translateY(-2px); }
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ===== 响应式微调 ===== */
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-header { margin-bottom: 36px; }
  .page-hero { min-height: 340px; padding: 100px 16px 60px; }
  .card-grid, .card-grid-3, .card-grid-4 { gap: 20px; }
  .stats-grid { gap: 16px; }
  .steps-grid { gap: 20px; }
  .cta-box { padding: 36px 24px; }
}
@media (max-width: 520px) {
  .page-hero h1 { font-size: 2rem; }
  .page-hero p { font-size: 0.95rem; }
  .hero-actions .btn-primary, .hero-actions .btn-ghost { padding: 12px 28px; font-size: 14px; width: 100%; }
  .stat-number { font-size: 2.2rem; }
  .faq-question { font-size: 0.95rem; padding: 16px 18px; }
  .faq-answer { padding: 0 18px; }
  .faq-item.open .faq-answer { padding: 0 18px 16px; }
}

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--border-glow); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ===== 辅助类 ===== */
.glow-text { text-shadow: 0 0 30px var(--primary-glow); }
.glow-border { border-color: var(--border-glow); }
.mt-1 { margin-top: 16px; }
.mt-2 { margin-top: 24px; }
.gap-1 { gap: 12px; }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #00d4ff;
            --primary-dark: #009dcc;
            --secondary: #7c3ff7;
            --secondary-light: #9f6aff;
            --accent: #00ff88;
            --accent-dark: #00cc6a;
            --bg-dark: #070b1a;
            --bg-card: rgba(18, 24, 52, 0.85);
            --bg-nav: rgba(7, 11, 30, 0.75);
            --bg-section: #0a0f26;
            --text-white: #ffffff;
            --text-light: #d0d6f0;
            --text-muted: #8891b5;
            --border-subtle: rgba(0, 212, 255, 0.15);
            --border-glow: rgba(0, 212, 255, 0.35);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 28px;
            --radius-xl: 40px;
            --shadow-sm: 0 2px 12px rgba(0, 212, 255, 0.08);
            --shadow-md: 0 8px 32px rgba(0, 212, 255, 0.12);
            --shadow-lg: 0 20px 60px rgba(0, 212, 255, 0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --container-pad: 24px;
        }

        /* ===== 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-light);
            background: var(--bg-dark);
            min-height: 100vh;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }

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

        ul {
            list-style: none;
        }

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

        /* ===== Utility ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-pad {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
        }

        .tag {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: rgba(0, 212, 255, 0.12);
            color: var(--primary);
            border: 1px solid rgba(0, 212, 255, 0.2);
            transition: var(--transition);
        }
        .tag:hover {
            background: rgba(0, 212, 255, 0.22);
            border-color: var(--primary);
        }

        .tag-accent {
            background: rgba(0, 255, 136, 0.12);
            color: var(--accent);
            border-color: rgba(0, 255, 136, 0.2);
        }
        .tag-accent:hover {
            background: rgba(0, 255, 136, 0.22);
            border-color: var(--accent);
        }

        /* ===== Navigation (Floating Capsule) ===== */
        .navbar {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: calc(100% - 48px);
            max-width: 1160px;
            padding: 10px 28px;
            background: var(--bg-nav);
            backdrop-filter: blur(18px) saturate(1.3);
            -webkit-backdrop-filter: blur(18px) saturate(1.3);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
            transition: var(--transition);
        }

        .navbar.scrolled {
            background: rgba(7, 11, 26, 0.92);
            border-color: var(--border-glow);
            box-shadow: 0 8px 48px rgba(0, 212, 255, 0.12);
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1.2rem;
            letter-spacing: -0.02em;
        }
        .navbar-brand:hover {
            color: var(--text-white);
        }

        .brand-icon {
            font-size: 1.5rem;
            color: var(--primary);
            filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.4));
        }

        .brand-text {
            background: linear-gradient(135deg, var(--text-white), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .navbar-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .navbar-links a {
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            text-decoration: none;
            transition: var(--transition);
            position: relative;
        }
        .navbar-links a:hover {
            color: var(--text-white);
            background: rgba(0, 212, 255, 0.08);
        }
        .navbar-links a.active {
            color: var(--text-white);
            background: rgba(0, 212, 255, 0.15);
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.06);
        }
        .navbar-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
        }

        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-ghost {
            padding: 8px 22px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-light);
            background: transparent;
            border: 1px solid var(--border-subtle);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-ghost:hover {
            color: var(--text-white);
            border-color: var(--primary);
            background: rgba(0, 212, 255, 0.06);
            box-shadow: 0 0 24px rgba(0, 212, 255, 0.08);
        }

        .btn-primary {
            padding: 8px 22px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #ffffff;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            box-shadow: 0 4px 20px rgba(0, 212, 255, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(0, 212, 255, 0.35);
            color: #ffffff;
        }

        .navbar-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: transparent;
            border: none;
        }
        .navbar-toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-light);
            border-radius: 4px;
            transition: var(--transition);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 160px 0 80px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 11, 26, 0.70) 0%, rgba(7, 11, 26, 0.92) 100%);
            z-index: 0;
        }
        .article-hero .container {
            position: relative;
            z-index: 1;
        }

        .article-hero-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            margin-bottom: 20px;
        }
        .article-hero-meta .category-badge {
            padding: 4px 18px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(0, 212, 255, 0.18);
            color: var(--primary);
            border: 1px solid rgba(0, 212, 255, 0.25);
            backdrop-filter: blur(4px);
        }
        .article-hero-meta .date-badge {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-hero-meta .date-badge i {
            color: var(--primary);
        }

        .article-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-white);
            max-width: 900px;
            letter-spacing: -0.03em;
            text-shadow: 0 2px 30px rgba(0, 0, 0, 0.4);
            margin-bottom: 16px;
        }

        .article-hero-desc {
            font-size: 1.15rem;
            color: var(--text-light);
            max-width: 720px;
            line-height: 1.7;
            opacity: 0.85;
        }

        /* ===== Article Content ===== */
        .article-body-section {
            padding: 60px 0 80px;
            background: var(--bg-section);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }

        .article-main {
            min-width: 0;
        }

        .article-content {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 40px 44px;
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-light);
            box-shadow: var(--shadow-sm);
        }
        .article-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 32px 0 16px;
            letter-spacing: -0.01em;
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-white);
            margin: 24px 0 12px;
        }
        .article-content p {
            margin-bottom: 20px;
        }
        .article-content p:last-child {
            margin-bottom: 0;
        }
        .article-content ul,
        .article-content ol {
            margin: 16px 0 20px 24px;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: var(--shadow-md);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(0, 212, 255, 0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--accent);
        }

        /* Article Not Found */
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found .nf-icon {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            opacity: 0.4;
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-not-found .btn-primary {
            display: inline-block;
            padding: 12px 36px;
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-card h3 i {
            color: var(--primary);
        }

        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            background: rgba(0, 212, 255, 0.03);
            border: 1px solid transparent;
            transition: var(--transition);
            text-decoration: none;
            color: var(--text-light);
        }
        .sidebar-list a:hover {
            background: rgba(0, 212, 255, 0.07);
            border-color: var(--border-subtle);
            color: var(--text-white);
        }
        .sidebar-list a .s-icon {
            font-size: 1.2rem;
            color: var(--primary);
            flex-shrink: 0;
            margin-top: 2px;
        }
        .sidebar-list a .s-text {
            font-size: 0.9rem;
            line-height: 1.4;
        }
        .sidebar-list a .s-text small {
            display: block;
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags .tag {
            font-size: 0.75rem;
            padding: 3px 14px;
        }

        /* ===== Related Articles ===== */
        .related-section {
            padding: 60px 0 80px;
            background: var(--bg-dark);
        }
        .related-section .section-title {
            text-align: center;
        }
        .related-section .section-sub {
            text-align: center;
            margin: 0 auto 48px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            text-decoration: none;
            color: var(--text-light);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-md);
            color: var(--text-light);
        }
        .related-card .rc-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #111633;
        }
        .related-card .rc-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
            border-radius: 0;
        }
        .related-card:hover .rc-img img {
            transform: scale(1.05);
        }
        .related-card .rc-body {
            padding: 18px 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .rc-body .rc-cat {
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.8px;
            margin-bottom: 6px;
        }
        .related-card .rc-body h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            line-height: 1.4;
            margin-bottom: 8px;
            transition: var(--transition);
        }
        .related-card:hover .rc-body h4 {
            color: var(--primary);
        }
        .related-card .rc-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
        }
        .related-card .rc-body .rc-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 14px;
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .related-card .rc-body .rc-meta i {
            margin-right: 4px;
            font-size: 0.7rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(7, 11, 26, 0.88), rgba(10, 15, 40, 0.92));
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto 32px;
            opacity: 0.8;
        }
        .cta-section .btn-primary {
            padding: 14px 48px;
            font-size: 1rem;
        }
        .cta-section .btn-ghost {
            padding: 14px 48px;
            font-size: 1rem;
            margin-left: 12px;
        }

        /* ===== Footer ===== */
        .footer {
            background: #050812;
            border-top: 1px solid rgba(0, 212, 255, 0.06);
            padding: 60px 0 30px;
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            background: linear-gradient(135deg, var(--text-white), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            margin-top: 14px;
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--text-muted);
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-muted);
            text-decoration: none;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .social-links {
            display: flex;
            gap: 12px;
        }
        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-muted);
            font-size: 0.8rem;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .social-links a:hover {
            background: rgba(0, 212, 255, 0.1);
            color: var(--primary);
            border-color: var(--border-subtle);
            transform: translateY(-2px);
        }

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

        @media (max-width: 768px) {
            :root {
                --container-pad: 16px;
            }
            .navbar {
                top: 12px;
                padding: 8px 16px;
                border-radius: 24px;
                width: calc(100% - 24px);
            }
            .navbar-links {
                display: none;
                position: absolute;
                top: calc(100% + 12px);
                left: 0;
                right: 0;
                background: var(--bg-nav);
                backdrop-filter: blur(18px);
                border-radius: var(--radius-md);
                padding: 12px;
                flex-direction: column;
                gap: 4px;
                border: 1px solid var(--border-subtle);
                box-shadow: var(--shadow-lg);
            }
            .navbar-links.open {
                display: flex;
            }
            .navbar-links a {
                padding: 10px 18px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .navbar-links a.active::after {
                display: none;
            }
            .navbar-actions .btn-ghost,
            .navbar-actions .btn-primary {
                display: none;
            }
            .navbar-toggle {
                display: flex;
            }

            .article-hero {
                padding: 130px 0 50px;
            }
            .article-hero h1 {
                font-size: 1.8rem;
            }
            .article-hero-desc {
                font-size: 1rem;
            }

            .article-content {
                padding: 24px 20px;
            }
            .article-content h2 {
                font-size: 1.3rem;
            }
            .article-content h3 {
                font-size: 1.1rem;
            }

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

            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .section-title {
                font-size: 1.5rem;
            }
            .section-pad {
                padding: 50px 0;
            }

            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .btn-ghost {
                margin-left: 0;
                margin-top: 12px;
                display: inline-block;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 16px;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .navbar {
                top: 8px;
                padding: 6px 14px;
                border-radius: 20px;
            }
            .brand-text {
                font-size: 0.95rem;
            }
            .brand-icon {
                font-size: 1.2rem;
            }
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-hero-meta {
                gap: 8px;
            }
            .article-hero-meta .category-badge {
                font-size: 0.7rem;
                padding: 2px 12px;
            }
            .article-hero-desc {
                font-size: 0.9rem;
            }
            .article-content {
                padding: 18px 14px;
                font-size: 0.95rem;
            }
            .related-card .rc-body {
                padding: 14px 16px 18px;
            }
            .cta-section .btn-primary,
            .cta-section .btn-ghost {
                padding: 12px 32px;
                font-size: 0.9rem;
            }
            .sidebar-card {
                padding: 20px 16px;
            }
        }