/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #4a6cf7;
            --color-primary-dark: #3a56d4;
            --color-primary-light: #6b8aff;
            --color-secondary: #6c5ce7;
            --color-accent: #f0a500;
            --color-accent-dark: #d48f00;
            --color-bg: #0c0c1d;
            --color-surface: #151530;
            --color-surface-light: #1e1e40;
            --color-card: #1a1a3a;
            --color-card-hover: #222248;
            --color-text: #f0f0f5;
            --color-text-secondary: #a0a0c0;
            --color-text-weak: #6a6a8a;
            --color-border: #2a2a50;
            --color-border-light: #3a3a60;
            --color-success: #00b894;
            --color-warning: #fdcb6e;
            --color-danger: #ff6b6b;
            --color-glass: rgba(21, 21, 48, 0.75);
            --color-glass-border: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 30px rgba(74, 108, 247, 0.2);
            --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-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--color-primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--color-accent);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }
        ul,
        ol {
            list-style: none;
        }

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

        /* ===== 通用组件 ===== */
        .section {
            padding: 90px 0;
            position: relative;
        }
        .section-dark {
            background: var(--color-surface);
        }
        .section-darker {
            background: var(--color-bg);
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            background: linear-gradient(135deg, #ffffff 0%, var(--color-primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-header p {
            font-size: 1.1rem;
            color: var(--color-text-secondary);
            max-width: 640px;
            margin: 0 auto;
        }
        .section-header .subtitle {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 8px;
            -webkit-text-fill-color: var(--color-accent);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            text-decoration: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            box-shadow: 0 4px 20px rgba(74, 108, 247, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(74, 108, 247, 0.5);
            color: #fff;
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--color-accent), #ff6b35);
            color: #1a1a2e;
            box-shadow: 0 4px 20px rgba(240, 165, 0, 0.3);
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(240, 165, 0, 0.45);
            color: #1a1a2e;
        }
        .btn-outline {
            background: transparent;
            color: var(--color-text);
            border: 1.5px solid var(--color-border-light);
        }
        .btn-outline:hover {
            border-color: var(--color-primary);
            background: rgba(74, 108, 247, 0.1);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
            border-radius: var(--radius-lg);
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(74, 108, 247, 0.18);
            color: var(--color-primary-light);
            border: 1px solid rgba(74, 108, 247, 0.2);
        }
        .badge-accent {
            background: rgba(240, 165, 0, 0.18);
            color: var(--color-accent);
            border-color: rgba(240, 165, 0, 0.2);
        }
        .badge-success {
            background: rgba(0, 184, 148, 0.18);
            color: var(--color-success);
            border-color: rgba(0, 184, 148, 0.2);
        }
        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 100px;
            font-size: 0.72rem;
            font-weight: 500;
            background: var(--color-surface-light);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
        }
        .card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: 32px;
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .card:hover {
            background: var(--color-card-hover);
            border-color: var(--color-border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 18px;
            background: rgba(74, 108, 247, 0.15);
            color: var(--color-primary-light);
        }
        .card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .card p {
            color: var(--color-text-secondary);
            font-size: 0.92rem;
            line-height: 1.6;
        }
        .divider {
            width: 100%;
            height: 1px;
            background: var(--color-border);
            margin: 0;
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            transition: var(--transition);
            background: transparent;
        }
        .header.scrolled {
            background: var(--color-glass);
            backdrop-filter: blur(24px) saturate(1.4);
            -webkit-backdrop-filter: blur(24px) saturate(1.4);
            border-bottom: 1px solid var(--color-glass-border);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header .logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            letter-spacing: -0.3px;
        }
        .header .logo i {
            color: var(--color-accent);
            font-size: 1.5rem;
        }
        .header .logo span {
            background: linear-gradient(135deg, #fff 60%, var(--color-primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .header .logo:hover {
            color: #fff;
        }
        .header .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .header .nav-list a {
            color: var(--color-text-secondary);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            text-decoration: none;
            transition: var(--transition);
            position: relative;
        }
        .header .nav-list a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .header .nav-list a.active {
            color: #fff;
            background: rgba(74, 108, 247, 0.2);
        }
        .header .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--color-primary-light);
            border-radius: 2px;
        }
        .header .nav-cta {
            margin-left: 12px;
        }
        .header .nav-cta .btn {
            padding: 8px 22px;
            font-size: 0.85rem;
        }
        .header .menu-toggle {
            display: none;
            background: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px;
            border: none;
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: var(--color-glass);
            backdrop-filter: blur(24px) saturate(1.4);
            -webkit-backdrop-filter: blur(24px) saturate(1.4);
            border-bottom: 1px solid var(--color-glass-border);
            padding: 16px 24px;
            z-index: 999;
            transform: translateY(-105%);
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .mobile-nav.open {
            transform: translateY(0);
        }
        .mobile-nav a {
            display: block;
            padding: 12px 16px;
            color: var(--color-text-secondary);
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: #fff;
            background: rgba(74, 108, 247, 0.15);
        }
        .mobile-nav .btn {
            margin-top: 12px;
            width: 100%;
            justify-content: center;
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding-top: var(--header-height);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(12, 12, 29, 0.88) 0%, rgba(12, 12, 29, 0.6) 50%, rgba(21, 21, 48, 0.7) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 200px;
            background: linear-gradient(to top, var(--color-bg), transparent);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .hero-content {
            max-width: 700px;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 100px;
            background: rgba(74, 108, 247, 0.15);
            border: 1px solid rgba(74, 108, 247, 0.2);
            font-size: 0.82rem;
            color: var(--color-primary-light);
            margin-bottom: 24px;
        }
        .hero-content h1 {
            font-size: 3.4rem;
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 1.15rem;
            color: var(--color-text-secondary);
            max-width: 560px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-content .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .hero-content .hero-actions .btn {
            font-size: 1rem;
            padding: 14px 32px;
        }
        .hero-content .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-content .hero-stats .stat-item h4 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .hero-content .hero-stats .stat-item h4 span {
            color: var(--color-accent);
        }
        .hero-content .hero-stats .stat-item p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            margin-bottom: 0;
        }
        .hero-visual {
            position: absolute;
            right: -60px;
            top: 50%;
            transform: translateY(-50%);
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle at center, rgba(74, 108, 247, 0.12), transparent 70%);
            pointer-events: none;
            z-index: 1;
        }
        .hero-visual::after {
            content: '';
            position: absolute;
            inset: 30px;
            border-radius: 50%;
            border: 1px solid rgba(74, 108, 247, 0.08);
        }

        /* ===== 核心服务 ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .services-grid .card {
            padding: 36px 28px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .services-grid .card .icon-wrap {
            margin: 0 auto 20px;
            width: 64px;
            height: 64px;
            border-radius: 16px;
            font-size: 1.6rem;
        }
        .services-grid .card .icon-wrap.purple {
            background: rgba(108, 92, 231, 0.18);
            color: #a29bfe;
        }
        .services-grid .card .icon-wrap.green {
            background: rgba(0, 184, 148, 0.18);
            color: #55efc4;
        }
        .services-grid .card .icon-wrap.gold {
            background: rgba(240, 165, 0, 0.18);
            color: #fdcb6e;
        }
        .services-grid .card .card-bg-icon {
            position: absolute;
            right: -20px;
            bottom: -20px;
            font-size: 6rem;
            opacity: 0.04;
            color: #fff;
            pointer-events: none;
        }

        /* ===== 热门游戏入口 ===== */
        .games-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .game-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            transition: var(--transition);
            cursor: pointer;
            position: relative;
        }
        .game-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border-light);
        }
        .game-card .game-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            transition: var(--transition);
        }
        .game-card:hover .game-img {
            transform: scale(1.03);
        }
        .game-card .game-info {
            padding: 20px 22px 24px;
        }
        .game-card .game-info h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .game-card .game-info p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin-bottom: 12px;
        }
        .game-card .game-info .game-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .game-card .game-info .game-meta .badge {
            font-size: 0.72rem;
        }
        .game-card .game-info .game-meta span {
            font-size: 0.82rem;
            color: var(--color-text-weak);
        }

        /* ===== 最新资讯 (CMS) ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: 20px;
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .news-card:hover {
            background: var(--color-card-hover);
            border-color: var(--color-border-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .news-card .news-thumb {
            width: 120px;
            height: 90px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-surface-light);
        }
        .news-card .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-card .news-body .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 6px;
            font-size: 0.78rem;
            color: var(--color-text-weak);
        }
        .news-card .news-body .news-meta .badge {
            font-size: 0.68rem;
            padding: 2px 10px;
        }
        .news-card .news-body h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-body h4 a {
            color: var(--color-text);
            text-decoration: none;
        }
        .news-card .news-body h4 a:hover {
            color: var(--color-primary-light);
        }
        .news-card .news-body p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--color-text-weak);
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }
        .news-empty i {
            font-size: 2.4rem;
            margin-bottom: 12px;
            opacity: 0.5;
        }

        /* ===== 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 44px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(to right, var(--color-primary), var(--color-secondary), var(--color-accent));
            opacity: 0.3;
            z-index: 0;
        }
        .step-card {
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: 32px 20px 28px;
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            box-shadow: 0 4px 16px rgba(74, 108, 247, 0.25);
        }
        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-card p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: 36px 20px;
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
            border-color: rgba(74, 108, 247, 0.2);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--color-primary-light);
            margin-bottom: 12px;
        }
        .stat-card .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-card .stat-number span {
            color: var(--color-accent);
        }
        .stat-card .stat-label {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            margin-top: 4px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--color-border-light);
        }
        .faq-item .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-question:hover {
            color: var(--color-primary-light);
        }
        .faq-item .faq-question i {
            color: var(--color-text-weak);
            transition: transform 0.3s ease;
            font-size: 0.9rem;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary-light);
        }
        .faq-item .faq-answer {
            padding: 0 24px 0;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            color: var(--color-text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            padding: 0 24px 22px;
            max-height: 300px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-surface), var(--color-bg));
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            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;
            pointer-events: none;
        }
        .cta-content {
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }
        .cta-content h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .cta-content p {
            color: var(--color-text-secondary);
            font-size: 1.05rem;
            margin-bottom: 28px;
        }
        .cta-content .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }
        .footer-brand .logo i {
            color: var(--color-accent);
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            max-width: 300px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--color-primary-light);
            padding-left: 4px;
        }
        .footer-col .social-links {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }
        .footer-col .social-links a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-surface-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-secondary);
            font-size: 1rem;
            padding: 0;
            border: 1px solid var(--color-border);
        }
        .footer-col .social-links a:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            padding: 0;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
            font-size: 0.82rem;
            color: var(--color-text-weak);
        }
        .footer-bottom a {
            color: var(--color-text-weak);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--color-primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-content h1 {
                font-size: 2.6rem;
            }
            .hero-visual {
                width: 350px;
                height: 350px;
                right: -40px;
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .games-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid::before {
                display: none;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
            .header .nav-list {
                display: none;
            }
            .header .menu-toggle {
                display: block;
            }
            .mobile-nav {
                display: block;
            }
            .hero {
                min-height: 90vh;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-content p {
                font-size: 1rem;
            }
            .hero-content .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .hero-content .hero-stats .stat-item h4 {
                font-size: 1.4rem;
            }
            .hero-visual {
                display: none;
            }
            .services-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .games-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .news-card {
                flex-direction: column;
            }
            .news-card .news-thumb {
                width: 100%;
                height: 160px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-card .stat-number {
                font-size: 1.6rem;
            }
            .cta-content h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .hero-content .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-content .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-content .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 24px 12px;
            }
            .faq-item .faq-question {
                padding: 16px 18px;
                font-size: 0.92rem;
            }
            .footer-grid {
                gap: 20px;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6C5CE7;
            --primary-dark: #5A4BD1;
            --primary-light: #A29BFE;
            --secondary: #00CEC9;
            --secondary-dark: #00B5B0;
            --accent: #FD79A8;
            --bg-dark: #0F0B1A;
            --bg-darker: #0A0714;
            --bg-card: #1A1530;
            --bg-card-hover: #221D3A;
            --bg-surface: #2D2650;
            --text-primary: #F5F3FF;
            --text-secondary: #C8C3E8;
            --text-muted: #8B85B5;
            --border-color: rgba(108, 92, 231, 0.25);
            --border-light: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 40px rgba(108, 92, 231, 0.15);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 7rem;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --glass-bg: rgba(15, 11, 26, 0.72);
            --glass-border: rgba(108, 92, 231, 0.18);
            --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

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

        /* ===== Glass Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--glass-bg);
            backdrop-filter: blur(18px) saturate(1.4);
            -webkit-backdrop-filter: blur(18px) saturate(1.4);
            border-bottom: 1px solid var(--glass-border);
            box-shadow: var(--glass-shadow);
            transition: background var(--transition), box-shadow var(--transition);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.3px;
        }
        .logo i {
            color: var(--secondary);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--text-primary);
            background: rgba(108, 92, 231, 0.15);
        }
        .nav-list a.active {
            color: var(--text-primary);
            background: rgba(108, 92, 231, 0.25);
            box-shadow: 0 0 20px rgba(108, 92, 231, 0.08);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--secondary);
        }
        .nav-list .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(108, 92, 231, 0.4);
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
        }
        .nav-list .nav-cta i {
            font-size: 1rem;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        @media (max-width: 900px) {
            .nav-list {
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(15, 11, 26, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: var(--spacing-sm) var(--spacing-md);
                gap: 6px;
                border-bottom: 1px solid var(--glass-border);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-list a {
                width: 100%;
                padding: 12px 18px;
                border-radius: 12px;
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-list .nav-cta {
                justify-content: center;
                margin-top: 4px;
            }
            .nav-toggle {
                display: block;
            }
        }

        @media (max-width: 480px) {
            .header .container {
                height: 64px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 140px 0 80px;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            min-height: 320px;
            display: flex;
            align-items: center;
            isolation: isolate;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 11, 26, 0.88), rgba(15, 11, 26, 0.70), rgba(15, 11, 26, 0.88));
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 60%, rgba(108, 92, 231, 0.12), transparent 70%);
            z-index: 0;
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 3.2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 50%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-top: 20px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .page-banner .breadcrumb a {
            color: var(--primary-light);
        }
        .page-banner .breadcrumb a:hover {
            color: var(--secondary);
        }
        .page-banner .breadcrumb span {
            color: var(--text-secondary);
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 120px 0 60px;
                min-height: 260px;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
        }
        @media (max-width: 480px) {
            .page-banner h1 {
                font-size: 1.7rem;
            }
            .page-banner p {
                font-size: 0.92rem;
            }
        }

        /* ===== Section Shared ===== */
        .section {
            padding: var(--spacing-xl) 0;
        }
        .section-alt {
            background: var(--bg-darker);
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            margin-bottom: 12px;
            background: linear-gradient(135deg, #fff, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 620px;
            margin-bottom: var(--spacing-lg);
            line-height: 1.8;
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-lg);
        }
        .section-header .section-sub {
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-lg) 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .section-sub {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 480px) {
            .section-title {
                font-size: 1.5rem;
            }
        }

        /* ===== Steps / Timeline ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: var(--spacing-md);
            counter-reset: step-counter;
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
            counter-increment: step-counter;
        }
        .step-card::before {
            content: counter(step-counter);
            position: absolute;
            top: 16px;
            left: 20px;
            font-size: 2.8rem;
            font-weight: 800;
            color: rgba(108, 92, 231, 0.12);
            line-height: 1;
            font-family: 'Inter', sans-serif;
        }
        .step-card:hover {
            transform: translateY(-8px);
            border-color: var(--border-color);
            box-shadow: var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .step-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.2), rgba(0, 206, 201, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: var(--secondary);
            transition: all var(--transition);
        }
        .step-card:hover .step-icon {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 0 30px rgba(108, 92, 231, 0.25);
        }
        .step-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }
        }

        /* ===== Login Methods ===== */
        .methods-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: var(--spacing-md);
        }
        .method-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }
        .method-card:hover {
            border-color: var(--border-color);
            box-shadow: var(--shadow-glow);
            transform: translateY(-5px);
            background: var(--bg-card-hover);
        }
        .method-card .method-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(108, 92, 231, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary-light);
            margin-bottom: 16px;
            transition: all var(--transition);
        }
        .method-card:hover .method-icon {
            background: var(--primary);
            color: #fff;
        }
        .method-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .method-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
            flex: 1;
        }
        .method-card .tag {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(0, 206, 201, 0.12);
            color: var(--secondary);
            border: 1px solid rgba(0, 206, 201, 0.2);
        }
        .method-card .tag.hot {
            background: rgba(253, 121, 168, 0.12);
            color: var(--accent);
            border-color: rgba(253, 121, 168, 0.2);
        }
        .method-card .tag.new {
            background: rgba(108, 92, 231, 0.15);
            color: var(--primary-light);
            border-color: rgba(108, 92, 231, 0.25);
        }

        @media (max-width: 900px) {
            .methods-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .methods-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Security Tips ===== */
        .security-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }
        .security-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-light);
            aspect-ratio: 4/3;
            background: var(--bg-card);
        }
        .security-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .security-image:hover img {
            transform: scale(1.03);
        }
        .security-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .security-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 16px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .security-item:hover {
            border-color: var(--border-color);
            box-shadow: var(--shadow-sm);
            background: var(--bg-card-hover);
        }
        .security-item .s-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(0, 206, 201, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-size: 1rem;
        }
        .security-item .s-content h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 3px;
            color: var(--text-primary);
        }
        .security-item .s-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 900px) {
            .security-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .security-image {
                order: -1;
            }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-color);
        }
        .faq-item.open {
            border-color: var(--border-color);
            box-shadow: var(--shadow-glow);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            text-align: left;
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-question i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--secondary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        @media (max-width: 520px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.88rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.08), rgba(0, 206, 201, 0.06));
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: var(--spacing-lg) 0;
        }
        .cta-box {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-box h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            background: linear-gradient(135deg, #fff, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .cta-box p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .cta-box .btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 35px rgba(108, 92, 231, 0.4);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid var(--border-color);
        }
        .btn-outline:hover {
            border-color: var(--primary-light);
            background: rgba(108, 92, 231, 0.08);
            transform: translateY(-3px);
            color: var(--text-primary);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.88rem;
        }

        @media (max-width: 480px) {
            .cta-box h2 {
                font-size: 1.6rem;
            }
            .cta-box .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Footer (shared) ===== */
        .footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-light);
            padding: var(--spacing-lg) 0 var(--spacing-md);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        .footer-brand .logo {
            font-size: 1.25rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--secondary);
        }
        .footer-col .social-links {
            display: flex;
            gap: 10px;
            margin-top: 12px;
        }
        .footer-col .social-links a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-card);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1.1rem;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            padding: 0;
        }
        .footer-col .social-links a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-3px);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: var(--spacing-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-darker);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--bg-surface);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary-dark);
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .anim-fade-up {
            animation: fadeUp 0.7s ease forwards;
        }
        .anim-delay-1 {
            animation-delay: 0.1s;
        }
        .anim-delay-2 {
            animation-delay: 0.2s;
        }
        .anim-delay-3 {
            animation-delay: 0.3s;
        }
        .anim-delay-4 {
            animation-delay: 0.4s;
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-sm {
            margin-top: var(--spacing-sm);
        }
        .mt-md {
            margin-top: var(--spacing-md);
        }
        .mt-lg {
            margin-top: var(--spacing-lg);
        }
        .mb-sm {
            margin-bottom: var(--spacing-sm);
        }
        .mb-md {
            margin-bottom: var(--spacing-md);
        }
        .mb-lg {
            margin-bottom: var(--spacing-lg);
        }
        .gap-sm {
            gap: var(--spacing-sm);
        }
        .gap-md {
            gap: var(--spacing-md);
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f3460;
            --primary-dark: #0a2647;
            --primary-light: #1a5276;
            --accent: #e8b830;
            --accent-light: #f0d060;
            --accent-dark: #c9a020;
            --bg: #f5f7fa;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #6b7280;
            --text-light: #9ca3af;
            --border: rgba(15, 52, 96, 0.12);
            --border-light: rgba(15, 52, 96, 0.06);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(15, 52, 96, 0.08);
            --shadow-lg: 0 12px 48px rgba(15, 52, 96, 0.14);
            --shadow-hover: 0 16px 56px rgba(15, 52, 96, 0.18);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
            --hero-height: 420px;
        }

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

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

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .header.scrolled {
            background: rgba(255, 255, 255, 0.96);
            box-shadow: 0 2px 32px rgba(15, 52, 96, 0.08);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--accent);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary) 40%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--primary);
            background: rgba(15, 52, 96, 0.06);
        }
        .nav-list a.active {
            color: var(--primary);
            background: rgba(15, 52, 96, 0.1);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-cta {
            padding: 8px 22px !important;
            border-radius: 40px !important;
            font-weight: 600 !important;
            font-size: 0.9rem !important;
        }
        .nav-cta i {
            font-size: 1.05rem;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--primary);
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            line-height: 1.4;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 4px 16px rgba(15, 52, 96, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(15, 52, 96, 0.35);
            color: #fff;
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(232, 184, 48, 0.3);
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(232, 184, 48, 0.4);
            color: var(--primary-dark);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 44px;
            font-size: 1.1rem;
        }

        /* ===== Tags / Badges ===== */
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 500;
            background: rgba(15, 52, 96, 0.08);
            color: var(--primary);
            transition: all var(--transition);
        }
        .tag:hover {
            background: var(--primary);
            color: #fff;
        }
        .tag-accent {
            background: rgba(232, 184, 48, 0.15);
            color: var(--accent-dark);
        }
        .tag-accent:hover {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .badge {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--accent);
            color: var(--primary-dark);
            letter-spacing: 0.3px;
        }

        /* ===== Hero ===== */
        .article-hero {
            position: relative;
            margin-top: var(--nav-height);
            height: var(--hero-height);
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            overflow: hidden;
            background: var(--primary-dark);
        }
        .article-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.5;
            transition: transform 0.6s ease;
        }
        .article-hero:hover .article-hero-bg {
            transform: scale(1.03);
        }
        .article-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 38, 71, 0.85) 0%, rgba(15, 52, 96, 0.7) 100%);
        }
        .article-hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            padding: 0 24px;
        }
        .article-hero .tag {
            background: rgba(232, 184, 48, 0.2);
            color: var(--accent-light);
            margin-bottom: 16px;
            font-size: 0.85rem;
        }
        .article-hero .tag:hover {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .article-hero .meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .article-hero .meta i {
            margin-right: 5px;
            color: var(--accent);
        }
        .article-hero .meta span {
            display: inline-flex;
            align-items: center;
        }

        /* ===== Article Body ===== */
        .article-section {
            padding: 60px 0 40px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
            align-items: start;
        }
        .article-main {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 48px;
            transition: box-shadow var(--transition);
        }
        .article-main:hover {
            box-shadow: var(--shadow-lg);
        }
        .article-main .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text);
        }
        .article-main .content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 36px 0 16px;
            color: var(--primary);
        }
        .article-main .content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin: 28px 0 12px;
            color: var(--primary-light);
        }
        .article-main .content p {
            margin-bottom: 18px;
            color: #2d3748;
        }
        .article-main .content ul,
        .article-main .content ol {
            margin-bottom: 18px;
            padding-left: 24px;
        }
        .article-main .content ul li {
            list-style: disc;
            margin-bottom: 8px;
            color: #2d3748;
        }
        .article-main .content ol li {
            list-style: decimal;
            margin-bottom: 8px;
            color: #2d3748;
        }
        .article-main .content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(232, 184, 48, 0.06);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-main .content img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .article-main .content a {
            color: var(--accent-dark);
            text-decoration: underline;
        }
        .article-main .content a:hover {
            color: var(--primary);
        }
        .article-main .content code {
            background: rgba(15, 52, 96, 0.06);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 0.9em;
            color: var(--primary);
        }

        /* ===== Article Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px;
            transition: box-shadow var(--transition);
        }
        .sidebar-card:hover {
            box-shadow: var(--shadow-lg);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--accent);
        }
        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            transition: all var(--transition);
        }
        .sidebar-card ul li a:hover {
            color: var(--primary);
            transform: translateX(4px);
        }
        .sidebar-card ul li a i {
            color: var(--accent);
            font-size: 0.8rem;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            text-align: center;
            padding: 32px 24px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar-cta h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .sidebar-cta p {
            font-size: 0.9rem;
            opacity: 0.85;
            margin-bottom: 18px;
        }
        .sidebar-cta .btn {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
        }
        .sidebar-cta .btn:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
        }

        /* ===== Share Bar ===== */
        .share-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            flex-wrap: wrap;
        }
        .share-bar span {
            font-weight: 600;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .share-bar a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg);
            color: var(--text-secondary);
            transition: all var(--transition);
            font-size: 1.1rem;
        }
        .share-bar a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Related Articles ===== */
        .related-section {
            padding: 60px 0;
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .related-section .section-title h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .related-section .section-title p {
            color: var(--text-secondary);
            font-size: 1rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.06);
        }
        .related-card .card-img .badge {
            position: absolute;
            top: 16px;
            left: 16px;
        }
        .related-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h3 a {
            color: var(--text);
        }
        .related-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }
        .related-card .card-body .meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .related-card .card-body .meta .tag {
            font-size: 0.72rem;
            padding: 2px 10px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 60px 0;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            margin: 0 24px;
            box-shadow: var(--shadow);
        }
        .faq-section .container {
            max-width: 860px;
        }
        .faq-section .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .faq-section .section-title h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .faq-section .section-title p {
            color: var(--text-secondary);
            font-size: 1rem;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 18px 0;
        }
        .faq-item:first-child {
            padding-top: 0;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            padding: 8px 0;
            gap: 16px;
        }
        .faq-question h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            flex: 1;
            transition: color var(--transition);
        }
        .faq-question:hover h4 {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--bg);
            color: var(--text-secondary);
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 0 0 16px;
        }
        .faq-answer.open {
            max-height: 400px;
            padding: 12px 0 16px 16px;
        }
        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0 60px;
            text-align: center;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-box h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-box p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 32px;
            position: relative;
        }
        .cta-box .btn {
            position: relative;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 60px 0 30px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .logo i {
            color: var(--accent);
        }
        .footer-brand .logo span {
            background: none;
            -webkit-text-fill-color: #fff;
            background-clip: unset;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            padding: 6px 0;
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 6px;
        }
        .footer-col .social-links {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }
        .footer-col .social-links a {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            padding: 0;
            transition: all var(--transition);
        }
        .footer-col .social-links a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 0;
            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, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            padding: 0;
            display: inline;
        }
        .footer-bottom a:hover {
            color: var(--accent);
            padding: 0;
        }

        /* ===== Error State ===== */
        .error-state {
            text-align: center;
            padding: 100px 24px 80px;
            margin-top: var(--nav-height);
        }
        .error-state .error-icon {
            font-size: 4rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .error-state h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .error-state p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--text-light);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== 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);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
                --hero-height: 320px;
            }
            .nav-list a:not(.nav-cta) {
                display: none;
            }
            .nav-list a.nav-cta {
                padding: 6px 16px !important;
                font-size: 0.82rem !important;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-list.open a:not(.nav-cta) {
                display: flex;
            }
            .nav-list.open {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
                border-radius: 0 0 var(--radius) var(--radius);
                align-items: stretch;
            }
            .nav-list.open a {
                justify-content: center;
                padding: 12px 18px;
                border-radius: 10px;
            }
            .nav-list.open a.active::after {
                display: none;
            }
            .nav-list.open a.nav-cta {
                margin-top: 8px;
                justify-content: center;
            }
            .article-hero h1 {
                font-size: 1.8rem;
            }
            .article-hero .meta {
                font-size: 0.8rem;
                gap: 12px;
            }
            .article-main {
                padding: 28px 20px;
            }
            .article-main .content {
                font-size: 0.98rem;
            }
            .article-main .content h2 {
                font-size: 1.35rem;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .related-section {
                padding: 40px 0;
            }
            .faq-section {
                margin: 0 16px;
                padding: 40px 16px;
                border-radius: var(--radius);
            }
            .faq-section .section-title h2 {
                font-size: 1.5rem;
            }
            .cta-box {
                padding: 40px 24px;
                border-radius: var(--radius);
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .error-state {
                padding: 60px 20px 40px;
            }
            .error-state h2 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            :root {
                --hero-height: 280px;
            }
            .container {
                padding: 0 16px;
            }
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-hero .meta {
                font-size: 0.75rem;
                gap: 8px;
                flex-direction: column;
            }
            .article-main {
                padding: 20px 16px;
                border-radius: var(--radius-sm);
            }
            .article-main .content {
                font-size: 0.92rem;
            }
            .article-main .content h2 {
                font-size: 1.2rem;
            }
            .share-bar a {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
            .related-card .card-img {
                height: 160px;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .cta-box h2 {
                font-size: 1.25rem;
            }
            .cta-box p {
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 14px 32px;
                font-size: 1rem;
            }
            .sidebar-card {
                padding: 20px 16px;
            }
        }