/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-bg: #0b0b1a;
            --color-bg-alt: #111128;
            --color-bg-card: rgba(20, 20, 50, 0.85);
            --color-bg-card-hover: rgba(30, 30, 70, 0.95);
            --color-primary: #00d4ff;
            --color-primary-dim: rgba(0, 212, 255, 0.15);
            --color-primary-glow: rgba(0, 212, 255, 0.35);
            --color-secondary: #7c3aed;
            --color-secondary-glow: rgba(124, 58, 237, 0.35);
            --color-accent: #f59e0b;
            --color-text: #f0f0f8;
            --color-text-dim: #9494b8;
            --color-text-muted: #6b6b8a;
            --color-border: rgba(0, 212, 255, 0.18);
            --color-border-hover: rgba(0, 212, 255, 0.45);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 212, 255, 0.06);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(0, 212, 255, 0.2), 0 0 40px rgba(0, 212, 255, 0.08);
            --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --nav-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-body);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
        a:hover, a:focus { color: #66e5ff; }
        a:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; border-radius: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: #fff; }
        ::selection { background: var(--color-primary); color: #0b0b1a; }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--color-bg); }
        ::-webkit-scrollbar-thumb { background: var(--color-primary-dim); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--color-primary-glow); }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow { max-width: 960px; margin: 0 auto; padding: 0 24px; }

        /* ===== 标题装饰 ===== */
        .section-title {
            font-size: 2.25rem;
            text-align: center;
            margin-bottom: 0.5rem;
            background: linear-gradient(135deg, #fff 30%, var(--color-primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-subtitle {
            text-align: center;
            color: var(--color-text-dim);
            font-size: 1.1rem;
            max-width: 640px;
            margin: 0 auto 3rem;
        }
        .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
            border-radius: 4px;
            margin: 0.75rem auto 1.5rem;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(11, 11, 26, 0.88);
            backdrop-filter: blur(18px) saturate(1.2);
            border-bottom: 1px solid var(--color-border);
            transition: background var(--transition), border-color var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 11, 26, 0.96);
            border-bottom-color: rgba(0, 212, 255, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, #00d4ff, #7c3aed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-logo i { font-size: 1.3rem; -webkit-text-fill-color: initial; color: var(--color-primary); }
        .site-logo:hover { opacity: 0.9; }
        .nav-menu { display: flex; align-items: center; gap: 8px; }
        .nav-menu a {
            color: var(--color-text-dim);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            transition: color var(--transition), background var(--transition);
            position: relative;
        }
        .nav-menu a:hover { color: #fff; background: rgba(255,255,255,0.06); }
        .nav-menu a.active {
            color: var(--color-primary);
            background: var(--color-primary-dim);
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            box-shadow: 0 0 10px var(--color-primary-glow);
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary)) !important;
            color: #fff !important;
            padding: 10px 26px !important;
            border-radius: 30px !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 20px rgba(0, 212, 255, 0.25);
            transition: transform var(--transition), box-shadow var(--transition) !important;
            margin-left: 12px;
        }
        .nav-cta:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4) !important;
            color: #fff !important;
        }
        .nav-cta::after { display: none !important; }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border: none;
            background: transparent;
        }
        .hamburger span {
            width: 26px;
            height: 2px;
            background: #fff;
            border-radius: 4px;
            transition: transform var(--transition), opacity var(--transition);
        }
        .hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
        .mobile-overlay {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(11, 11, 26, 0.97);
            backdrop-filter: blur(12px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            padding: 40px 24px;
            gap: 12px;
        }
        .mobile-overlay.open { display: flex; }
        .mobile-overlay a {
            color: var(--color-text-dim);
            font-size: 1.2rem;
            padding: 14px 24px;
            width: 100%;
            max-width: 320px;
            text-align: center;
            border-radius: var(--radius-md);
            transition: background var(--transition), color var(--transition);
        }
        .mobile-overlay a:hover { background: rgba(255,255,255,0.06); color: #fff; }
        .mobile-overlay a.active { color: var(--color-primary); background: var(--color-primary-dim); }
        .mobile-overlay .nav-cta-mobile {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff !important;
            border-radius: 30px;
            margin-top: 16px;
            box-shadow: 0 4px 20px rgba(0, 212, 255, 0.2);
        }
        .mobile-overlay .nav-cta-mobile:hover { transform: scale(1.03); }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            position: relative;
            overflow: hidden;
            background: radial-gradient(ellipse at 30% 40%, rgba(0, 212, 255, 0.06) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 60%, rgba(124, 58, 237, 0.06) 0%, transparent 60%),
                        var(--color-bg);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
            background-size: 50px 50px;
            pointer-events: none;
        }
        .hero-glow {
            position: absolute;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            filter: blur(120px);
            opacity: 0.12;
            pointer-events: none;
        }
        .hero-glow.g1 { background: var(--color-primary); top: -10%; left: -10%; }
        .hero-glow.g2 { background: var(--color-secondary); bottom: -10%; right: -10%; }
        .hero-content { position: relative; z-index: 2; max-width: 800px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.2);
            padding: 6px 20px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: var(--color-primary);
            margin-bottom: 24px;
            letter-spacing: 0.04em;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            font-size: clamp(2.8rem, 8vw, 5.2rem);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #fff 20%, var(--color-primary) 60%, var(--color-secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            color: var(--color-text-dim);
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .btn-primary, .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            box-shadow: 0 4px 24px rgba(0, 212, 255, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 40px rgba(0, 212, 255, 0.45);
            color: #fff;
        }
        .btn-secondary {
            background: rgba(255,255,255,0.06);
            color: #fff;
            border: 1px solid rgba(255,255,255,0.12);
            backdrop-filter: blur(4px);
        }
        .btn-secondary:hover {
            background: rgba(255,255,255,0.12);
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(0,0,0,0.3);
            color: #fff;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            justify-content: center;
            margin-top: 56px;
            flex-wrap: wrap;
        }
        .hero-stat { text-align: center; }
        .hero-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            display: block;
        }
        .hero-stat .label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 2px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        /* ===== 优势卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            text-align: center;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            backdrop-filter: blur(6px);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-hover);
        }
        .feature-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            background: var(--color-primary-dim);
            color: var(--color-primary);
            transition: background var(--transition), color var(--transition);
        }
        .feature-card:hover .icon { background: rgba(0, 212, 255, 0.2); }
        .feature-card h3 { font-size: 1.25rem; margin-bottom: 12px; }
        .feature-card p { color: var(--color-text-dim); font-size: 0.95rem; line-height: 1.7; }

        /* ===== 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }
        .category-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            cursor: pointer;
            display: block;
            text-decoration: none;
            color: inherit;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-hover);
            color: inherit;
        }
        .category-card .cat-icon {
            font-size: 2rem;
            color: var(--color-primary);
            margin-bottom: 12px;
        }
        .category-card h4 { font-size: 1.1rem; margin-bottom: 6px; color: #fff; }
        .category-card p { font-size: 0.85rem; color: var(--color-text-dim); }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .stat-card .stat-icon {
            font-size: 1.8rem;
            color: var(--color-primary);
            margin-bottom: 12px;
        }
        .stat-card .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, #fff, var(--color-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-dim);
            margin-top: 6px;
        }

        /* ===== 最新资讯 ===== */
        .news-list { display: flex; flex-direction: column; gap: 16px; }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .news-item:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-hover);
        }
        .news-meta {
            flex-shrink: 0;
            text-align: center;
            min-width: 60px;
            padding-top: 4px;
        }
        .news-meta .day {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1;
            display: block;
        }
        .news-meta .month {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            text-transform: uppercase;
        }
        .news-body { flex: 1; min-width: 0; }
        .news-body h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
            color: #fff;
            transition: color var(--transition);
        }
        .news-item:hover .news-body h4 { color: var(--color-primary); }
        .news-body p {
            font-size: 0.9rem;
            color: var(--color-text-dim);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 14px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--color-primary-dim);
            color: var(--color-primary);
            border: 1px solid rgba(0, 212, 255, 0.15);
        }
        .tag-alt { background: rgba(124, 58, 237, 0.15); color: #a78bfa; border-color: rgba(124, 58, 237, 0.2); }
        .news-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--color-text-muted);
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }

        /* ===== 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 20px;
            text-align: center;
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 0 24px rgba(0, 212, 255, 0.2);
        }
        .step-card h4 { font-size: 1.1rem; margin-bottom: 10px; color: #fff; }
        .step-card p { font-size: 0.9rem; color: var(--color-text-dim); line-height: 1.6; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover { border-color: var(--color-border-hover); }
        .faq-question {
            width: 100%;
            text-align: left;
            background: transparent;
            border: none;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background var(--transition);
            gap: 16px;
        }
        .faq-question:hover { background: rgba(255,255,255,0.03); }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-icon { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--color-text-dim);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            text-align: center;
            background: radial-gradient(ellipse at 50% 50%, rgba(0, 212, 255, 0.06) 0%, transparent 70%);
            padding: 80px 24px;
            border-top: 1px solid var(--color-border);
        }
        .cta-section h2 {
            font-size: 2.4rem;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff, var(--color-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .cta-section p {
            color: var(--color-text-dim);
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 1.1rem;
        }
        .cta-section .btn-primary { font-size: 1.1rem; padding: 18px 44px; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-alt);
            border-top: 1px solid var(--color-border);
            padding: 48px 24px 32px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
        }
        .footer-brand .site-logo { font-size: 1.3rem; margin-bottom: 12px; }
        .footer-brand p {
            color: var(--color-text-dim);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .footer-col a {
            display: block;
            color: var(--color-text-muted);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-col a:hover { color: var(--color-primary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid var(--color-border);
            margin-top: 32px;
            padding-top: 20px;
            text-align: center;
            color: var(--color-text-muted);
            font-size: 0.85rem;
        }
        .footer-bottom a { color: var(--color-text-muted); }
        .footer-bottom a:hover { color: var(--color-primary); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-inner { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-menu { display: none; }
            .hamburger { display: flex; }
            .hero h1 { font-size: clamp(2.2rem, 10vw, 3.6rem); }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; }
            .hero-stat .num { font-size: 1.5rem; }
            .section { padding: 56px 0; }
            .section-title { font-size: 1.8rem; }
            .features-grid { grid-template-columns: 1fr; gap: 20px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-card .stat-num { font-size: 1.8rem; }
            .steps-grid { grid-template-columns: 1fr; gap: 16px; }
            .news-item { flex-direction: column; gap: 12px; padding: 16px; }
            .news-meta { display: flex; gap: 8px; align-items: center; min-width: auto; }
            .news-meta .day { font-size: 1.2rem; }
            .footer-inner { grid-template-columns: 1fr; gap: 28px; }
            .cta-section h2 { font-size: 1.8rem; }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 16px; }
            .site-logo { font-size: 1.2rem; }
            .hero { padding: 100px 16px 60px; }
            .hero-actions { flex-direction: column; align-items: center; }
            .btn-primary, .btn-secondary { width: 100%; max-width: 280px; justify-content: center; }
            .stats-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .section-title { font-size: 1.5rem; }
            .container { padding: 0 16px; }
            .faq-question { padding: 16px 18px; font-size: 0.95rem; }
            .cta-section { padding: 56px 16px; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --clr-primary: #0b1124;
            --clr-primary-light: #131b3a;
            --clr-accent: #00d4ff;
            --clr-accent-hover: #33ddff;
            --clr-purple: #7c3aed;
            --clr-purple-hover: #8b5cf6;
            --clr-bg: #070c1a;
            --clr-bg-card: rgba(19, 27, 58, 0.85);
            --clr-bg-card-hover: rgba(25, 35, 70, 0.95);
            --clr-text: #ffffff;
            --clr-text-muted: #b0b8d1;
            --clr-text-dim: #7a82a0;
            --clr-border: rgba(0, 212, 255, 0.15);
            --clr-border-hover: rgba(0, 212, 255, 0.35);
            --clr-glow: rgba(0, 212, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45), 0 0 0 1px var(--clr-border);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--clr-border-hover);
            --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.07);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== Base Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a { color: var(--clr-accent); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--clr-accent-hover); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; color: var(--clr-text); }
        h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); letter-spacing: -0.02em; }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); letter-spacing: -0.01em; }
        h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
        h4 { font-size: 1.15rem; }
        p { color: var(--clr-text-muted); margin-bottom: 0; }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        .section-pad { padding: 80px 0; }
        .section-pad-sm { padding: 56px 0; }
        .text-gradient {
            background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-purple) 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ===== Header / Nav (Brand Campaign Style) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(7, 12, 26, 0.85);
            backdrop-filter: blur(16px) saturate(1.4);
            border-bottom: 1px solid var(--clr-border);
            height: var(--header-h);
            transition: background var(--transition), border-color var(--transition);
        }
        .site-header.scrolled {
            background: rgba(7, 12, 26, 0.96);
            border-color: var(--clr-border-hover);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--clr-text);
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .site-logo i {
            font-size: 1.5rem;
            color: var(--clr-accent);
            filter: drop-shadow(0 0 12px rgba(0,212,255,0.3));
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-purple) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--clr-text-muted);
            font-size: 0.92rem;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-menu a:hover {
            color: var(--clr-text);
            background: rgba(255,255,255,0.05);
        }
        .nav-menu a.active {
            color: var(--clr-text);
            background: rgba(0,212,255,0.1);
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--clr-accent);
            box-shadow: 0 0 16px rgba(0,212,255,0.4);
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-purple) 100%) !important;
            color: #fff !important;
            padding: 10px 24px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 20px rgba(0,212,255,0.25);
            transition: all var(--transition) !important;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-cta:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 32px rgba(0,212,255,0.35) !important;
            background: linear-gradient(135deg, var(--clr-accent-hover) 0%, var(--clr-purple-hover) 100%) !important;
        }
        .nav-cta i { font-size: 0.85rem; transition: transform var(--transition); }
        .nav-cta:hover i { transform: translateX(4px); }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .hamburger:hover { background: rgba(255,255,255,0.05); }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            border-radius: 3px;
            background: var(--clr-text);
            transition: all 0.3s ease;
        }
        .hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .hamburger.open span:nth-child(2) { opacity: 0; }
        .hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ===== Hero ===== */
        .hero-section {
            padding: 140px 0 80px;
            background: var(--clr-bg);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--clr-border);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(0,212,255,0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(124,58,237,0.05) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0,212,255,0.1);
            border: 1px solid rgba(0,212,255,0.2);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.82rem;
            color: var(--clr-accent);
            font-weight: 500;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero-title { margin-bottom: 16px; }
        .hero-desc {
            font-size: 1.1rem;
            color: var(--clr-text-muted);
            max-width: 520px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            background: none;
            text-align: center;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-purple) 100%);
            color: #fff;
            box-shadow: 0 4px 24px rgba(0,212,255,0.25);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0,212,255,0.35);
            color: #fff;
        }
        .btn-outline {
            border: 1.5px solid var(--clr-border);
            color: var(--clr-text-muted);
            background: transparent;
        }
        .btn-outline:hover {
            border-color: var(--clr-accent);
            color: var(--clr-accent);
            background: rgba(0,212,255,0.05);
            transform: translateY(-2px);
        }
        .hero-visual {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-card-preview {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            width: 100%;
            max-width: 420px;
            backdrop-filter: blur(8px);
            box-shadow: var(--shadow-card);
        }
        .hero-card-preview .preview-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--clr-border);
        }
        .preview-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--clr-accent), var(--clr-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            font-weight: 700;
            flex-shrink: 0;
        }
        .preview-user h4 { font-size: 1rem; font-weight: 600; }
        .preview-user p { font-size: 0.8rem; color: var(--clr-text-dim); }
        .preview-steps { display: flex; flex-direction: column; gap: 14px; }
        .preview-step {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            background: rgba(255,255,255,0.03);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255,255,255,0.04);
            transition: all var(--transition);
        }
        .preview-step:hover { background: rgba(255,255,255,0.06); border-color: var(--clr-border); }
        .step-num {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(0,212,255,0.12);
            color: var(--clr-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .step-text { font-size: 0.9rem; color: var(--clr-text-muted); font-weight: 500; }
        .step-text strong { color: var(--clr-text); font-weight: 600; }

        /* ===== Process Section ===== */
        .process-section {
            background: var(--clr-primary);
            border-bottom: 1px solid var(--clr-border);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--clr-accent);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 12px;
        }
        .section-title { margin-bottom: 16px; }
        .section-desc {
            max-width: 640px;
            color: var(--clr-text-muted);
            font-size: 1.05rem;
            margin-bottom: 40px;
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .process-card {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .process-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--clr-accent), var(--clr-purple));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .process-card:hover::before { opacity: 1; }
        .process-card:hover {
            border-color: var(--clr-border-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }
        .process-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            margin: 0 auto 20px;
            background: rgba(0,212,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--clr-accent);
            transition: all var(--transition);
        }
        .process-card:hover .process-icon {
            background: rgba(0,212,255,0.15);
            box-shadow: 0 0 30px rgba(0,212,255,0.1);
        }
        .process-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .process-card p { font-size: 0.9rem; color: var(--clr-text-dim); }

        /* ===== Features Section ===== */
        .features-section {
            background: var(--clr-bg);
            border-bottom: 1px solid var(--clr-border);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: all var(--transition);
        }
        .feature-card:hover {
            border-color: var(--clr-border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(124,58,237,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--clr-purple);
            margin-bottom: 18px;
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: rgba(124,58,237,0.2);
        }
        .feature-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .feature-card p { font-size: 0.92rem; color: var(--clr-text-dim); line-height: 1.7; }

        /* ===== Stats Section ===== */
        .stats-section {
            background: var(--clr-primary);
            border-bottom: 1px solid var(--clr-border);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 32px 16px;
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            transition: all var(--transition);
        }
        .stat-item:hover {
            border-color: var(--clr-border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-purple) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 0.92rem;
            color: var(--clr-text-dim);
            font-weight: 500;
        }

        /* ===== Popular Games Section ===== */
        .games-section {
            background: var(--clr-bg);
            border-bottom: 1px solid var(--clr-border);
        }
        .games-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .game-card {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .game-card:hover {
            border-color: var(--clr-border-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }
        .game-thumb {
            height: 180px;
            background: linear-gradient(135deg, rgba(0,212,255,0.08), rgba(124,58,237,0.08));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: var(--clr-accent);
            position: relative;
            border-bottom: 1px solid var(--clr-border);
        }
        .game-thumb .game-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0,212,255,0.15);
            border: 1px solid rgba(0,212,255,0.25);
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            color: var(--clr-accent);
            font-weight: 600;
            backdrop-filter: blur(4px);
        }
        .game-info {
            padding: 20px 22px 24px;
        }
        .game-info h4 { font-size: 1.05rem; margin-bottom: 4px; }
        .game-info p { font-size: 0.85rem; color: var(--clr-text-dim); margin-bottom: 14px; }
        .game-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(255,255,255,0.04);
            color: var(--clr-text-dim);
            border: 1px solid rgba(255,255,255,0.06);
        }
        .tag-hot {
            background: rgba(0,212,255,0.1);
            color: var(--clr-accent);
            border-color: rgba(0,212,255,0.15);
        }
        .tag-new {
            background: rgba(124,58,237,0.1);
            color: var(--clr-purple);
            border-color: rgba(124,58,237,0.15);
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            background: var(--clr-primary);
            border-bottom: 1px solid var(--clr-border);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover { border-color: var(--clr-border-hover); }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            color: var(--clr-text);
            font-weight: 600;
            font-size: 1rem;
            text-align: left;
            transition: all var(--transition);
        }
        .faq-question:hover { color: var(--clr-accent); }
        .faq-question i {
            font-size: 0.8rem;
            color: var(--clr-accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            color: var(--clr-text-dim);
            font-size: 0.92rem;
            line-height: 1.8;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--clr-bg);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(0,212,255,0.04) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-box {
            position: relative;
            z-index: 2;
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius-xl);
            padding: 64px 48px;
            max-width: 760px;
            margin: 0 auto;
            box-shadow: var(--shadow-card);
        }
        .cta-box h2 { margin-bottom: 12px; }
        .cta-box p { color: var(--clr-text-dim); margin-bottom: 32px; font-size: 1.05rem; }
        .cta-box .btn { font-size: 1.05rem; padding: 16px 40px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--clr-primary);
            border-top: 1px solid var(--clr-border);
            padding: 60px 0 0;
        }
        .footer-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
        }
        .footer-brand .site-logo { font-size: 1.25rem; margin-bottom: 12px; }
        .footer-brand p { font-size: 0.9rem; color: var(--clr-text-dim); max-width: 320px; line-height: 1.7; }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--clr-text);
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 0.88rem;
            color: var(--clr-text-dim);
            transition: all var(--transition);
        }
        .footer-col a:hover { color: var(--clr-accent); padding-left: 6px; }
        .footer-col a i { margin-right: 8px; width: 18px; text-align: center; color: var(--clr-accent); }
        .footer-bottom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 24px 24px 28px;
            border-top: 1px solid var(--clr-border);
            margin-top: 40px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--clr-text-dim);
        }
        .footer-bottom a { color: var(--clr-text-dim); }
        .footer-bottom a:hover { color: var(--clr-accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-grid { grid-template-columns: 1fr; gap: 40px; text-align: center; }
            .hero-desc { margin-left: auto; margin-right: auto; }
            .hero-actions { justify-content: center; }
            .hero-card-preview { margin: 0 auto; }
            .process-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .features-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .games-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            :root { --header-h: 64px; }
            .section-pad { padding: 56px 0; }
            .section-pad-sm { padding: 40px 0; }
            .hamburger { display: flex; }
            .nav-menu {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(7,12,26,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--clr-border);
                transform: translateY(-110%);
                opacity: 0;
                transition: all 0.4s ease;
                pointer-events: none;
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-menu a { width: 100%; padding: 12px 16px; font-size: 1rem; }
            .nav-menu a.active::after { display: none; }
            .nav-cta { justify-content: center; margin-top: 8px; }
            .hero-section { padding: 110px 0 56px; }
            .hero-title { font-size: clamp(1.8rem, 6vw, 2.6rem); }
            .hero-desc { font-size: 1rem; }
            .process-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .features-grid { grid-template-columns: 1fr; gap: 16px; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-number { font-size: 1.8rem; }
            .games-grid { grid-template-columns: 1fr; gap: 16px; }
            .footer-inner { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-box { padding: 40px 24px; }
            .cta-box .btn { width: 100%; justify-content: center; }
        }
        @media (max-width: 520px) {
            .process-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-actions .btn { justify-content: center; }
            .container { padding: 0 16px; }
            .header-inner { padding: 0 16px; }
            .footer-inner { padding: 0 16px; }
            .footer-bottom { padding: 20px 16px 24px; }
            .cta-box { padding: 32px 20px; border-radius: var(--radius-lg); }
        }

        /* ===== Foundation Overrides ===== */
        .grid-container { max-width: var(--container-max); padding-left: 24px; padding-right: 24px; }
        @media (max-width: 520px) { .grid-container { padding-left: 16px; padding-right: 16px; } }
        .grid-x { margin-left: -12px; margin-right: -12px; }
        .cell { padding: 0 12px; }
        /* Ensure Foundation doesn't break our custom spacing */
        .site-header .grid-container, .site-footer .grid-container { padding-left: 0; padding-right: 0; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c3bf1;
            --primary-dark: #5228c9;
            --primary-light: #8f6ef7;
            --secondary: #f73d93;
            --accent: #00d4aa;
            --bg-dark: #0b0819;
            --bg-card: #13102a;
            --bg-section: #0f0c22;
            --text-main: #f0eef9;
            --text-muted: #8a86b0;
            --text-light: #b8b4d9;
            --border-color: #2a2744;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 30px rgba(108, 59, 241, 0.2);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-body);
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
        }

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

        /* ===== Header & Navigation ===== */
        .site-header {
            background: rgba(11, 8, 25, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0 24px;
        }

        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.3px;
        }
        .site-logo i {
            color: var(--secondary);
            font-size: 1.6rem;
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu a {
            color: var(--text-light);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .nav-menu a:hover {
            color: var(--text-main);
            background: rgba(108, 59, 241, 0.12);
        }
        .nav-menu a.active {
            color: var(--text-main);
            background: rgba(108, 59, 241, 0.18);
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-menu a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 20px rgba(108, 59, 241, 0.35);
        }
        .nav-menu a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(108, 59, 241, 0.5);
            color: #fff;
        }
        .nav-menu a.nav-cta:active {
            transform: translateY(0);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            padding: 60px 0 40px;
            position: relative;
            background: linear-gradient(180deg, rgba(108, 59, 241, 0.08) 0%, transparent 100%);
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: var(--text-muted);
        }
        .article-breadcrumb a:hover {
            color: var(--accent);
        }
        .article-breadcrumb .sep {
            color: var(--border-color);
        }
        .article-breadcrumb .current {
            color: var(--text-light);
        }
        .article-category-badge {
            display: inline-block;
            background: rgba(108, 59, 241, 0.2);
            color: var(--primary-light);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            border: 1px solid rgba(108, 59, 241, 0.2);
        }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 16px;
            max-width: 900px;
            letter-spacing: -0.5px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            color: var(--text-muted);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .article-meta i {
            margin-right: 5px;
            color: var(--primary-light);
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
        }

        /* ===== Article Body ===== */
        .article-section {
            padding: 20px 0 60px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .article-content p {
            margin-bottom: 1.2em;
            color: var(--text-light);
            font-size: 1.05rem;
            line-height: 1.85;
        }
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--text-main);
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            font-weight: 700;
            line-height: 1.35;
        }
        .article-content h2 {
            font-size: 1.6rem;
        }
        .article-content h3 {
            font-size: 1.3rem;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 1.2em;
            padding-left: 1.5em;
            color: var(--text-light);
        }
        .article-content li {
            margin-bottom: 0.4em;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(108, 59, 241, 0.08);
            padding: 16px 24px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-content a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content a:hover {
            color: var(--primary-light);
        }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 1.5em 0;
        }
        .article-content code {
            background: rgba(0, 0, 0, 0.3);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--accent);
        }
        .article-content hr {
            border: none;
            height: 1px;
            background: var(--border-color);
            margin: 2em 0;
        }

        /* ===== Article Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i {
            color: var(--secondary);
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.95rem;
        }
        .sidebar-card ul li a:hover {
            color: var(--accent);
        }
        .sidebar-card ul li a i {
            color: var(--primary-light);
            font-size: 0.8rem;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, rgba(108, 59, 241, 0.15), rgba(247, 61, 147, 0.1));
            border: 1px solid rgba(108, 59, 241, 0.2);
        }
        .sidebar-cta p {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-bottom: 16px;
        }
        .sidebar-cta .btn {
            width: 100%;
            text-align: center;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 4px 20px rgba(108, 59, 241, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(108, 59, 241, 0.5);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-main);
            border: 1px solid var(--border-color);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(108, 59, 241, 0.1);
            color: var(--text-main);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
        }
        .not-found-box i {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            font-size: 1.8rem;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-muted);
            font-size: 1.1rem;
            margin-bottom: 24px;
        }
        .not-found-box a {
            color: var(--accent);
        }

        /* ===== Article Nav ===== */
        .article-nav-section {
            padding: 20px 0 60px;
        }
        .article-nav-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .article-nav-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .article-nav-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .article-nav-card .label {
            font-size: 0.8rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 6px;
        }
        .article-nav-card .title {
            font-size: 1rem;
            color: var(--text-main);
            font-weight: 600;
        }
        .article-nav-card.next {
            text-align: right;
        }

        /* ===== FAQ ===== */
        .article-faq {
            padding: 60px 0;
            background: var(--bg-section);
        }
        .article-faq h2 {
            text-align: center;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 40px;
            color: var(--text-main);
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-item .q {
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .faq-item .q i {
            color: var(--secondary);
            font-size: 0.85rem;
        }
        .faq-item .a {
            color: var(--text-light);
            font-size: 0.95rem;
            padding-left: 24px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(135deg, rgba(108, 59, 241, 0.12), rgba(247, 61, 147, 0.06));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-light);
            font-size: 1.1rem;
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: rgba(11, 8, 25, 0.95);
            border-top: 1px solid var(--border-color);
            padding: 48px 24px 24px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .site-logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h5 {
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .article-hero h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 60px;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(11, 8, 25, 0.98);
                backdrop-filter: blur(18px);
                border-bottom: 1px solid var(--border-color);
                padding: 16px 24px;
                gap: 6px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 12px 16px;
                width: 100%;
            }
            .nav-menu a.nav-cta {
                justify-content: center;
                margin-top: 8px;
            }
            .nav-menu a.active::after {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .article-hero {
                padding: 36px 0 24px;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-content {
                padding: 24px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .article-nav-grid {
                grid-template-columns: 1fr;
            }
            .article-nav-card.next {
                text-align: left;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.35rem;
            }
            .article-content {
                padding: 16px;
            }
            .article-content p {
                font-size: 0.95rem;
            }
            .article-meta {
                gap: 12px;
                font-size: 0.8rem;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .sidebar-card {
                padding: 16px;
            }
        }

        /* ===== Foundation Overrides ===== */
        .grid-container {
            max-width: var(--max-width);
            padding: 0 24px;
        }
        @media print {
            .site-header,
            .site-footer,
            .article-sidebar,
            .cta-section,
            .article-faq {
                display: none;
            }
            .article-content {
                box-shadow: none;
                border: none;
                background: #fff;
                color: #000;
            }
            .article-content p {
                color: #333;
            }
            body {
                background: #fff;
            }
        }