/* roulang page: index */
:root {
            --primary: #0ea5e9;
            --primary-dark: #0284c7;
            --primary-light: #7dd3fc;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --bg-light: #f8fafc;
            --bg-dark: #0f172a;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --text-light: #f1f5f9;
            --border-color: #e2e8f0;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
            --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
            --transition: 0.2s ease;
        }
        * {
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            color: var(--text-main);
            background: var(--bg-light);
            line-height: 1.6;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        button, input, textarea, select {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        /* 悬浮胶囊导航 */
        .capsule-nav {
            position: fixed;
            top: 1.5rem;
            left: 50%;
            transform: translateX(-50%);
            z-index: 100;
            width: auto;
            max-width: calc(100vw - 2rem);
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(255,255,255,0.5);
            border-radius: 999px;
            padding: 0.5rem 1.2rem;
            box-shadow: 0 8px 32px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.06);
            gap: 1.5rem;
            transition: all 0.3s;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--primary-dark);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .nav-logo i {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 1rem;
            border-radius: 999px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(14,165,233,0.3);
        }
        .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 0.5rem 1.4rem !important;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 12px rgba(14,165,233,0.35);
            transition: all var(--transition);
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 18px rgba(2,132,199,0.4);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-main);
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .capsule-nav {
                top: 1rem;
                padding: 0.6rem 1rem;
                border-radius: 2rem;
                gap: 0.5rem;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 0.5rem);
                left: 50%;
                transform: translateX(-50%);
                width: calc(100vw - 2rem);
                flex-direction: column;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                border-radius: 2rem;
                padding: 1.5rem;
                box-shadow: 0 20px 30px rgba(0,0,0,0.15);
                gap: 0.8rem;
                border: 1px solid rgba(255,255,255,0.8);
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                justify-content: center;
                padding: 0.75rem 1rem;
                font-size: 1rem;
            }
            .mobile-toggle {
                display: block;
            }
        }
        /* Hero */
        .hero-section {
            position: relative;
            min-height: 90vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            color: #fff;
            overflow: hidden;
            margin-bottom: 4rem;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            filter: brightness(0.65);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.7), rgba(14,165,233,0.3));
        }
        .hero-content {
            position: relative;
            z-index: 10;
            max-width: 800px;
            padding: 2rem;
        }
        .hero-content h1 {
            font-size: 3.5rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-shadow: 0 4px 12px rgba(0,0,0,0.3);
        }
        .hero-content p {
            font-size: 1.25rem;
            opacity: 0.9;
            margin-bottom: 2.5rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--primary);
            color: #fff;
            padding: 0.9rem 2.5rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 1.1rem;
            transition: all var(--transition);
            box-shadow: 0 8px 20px rgba(14,165,233,0.4);
            border: none;
            cursor: pointer;
            text-transform: none;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(2,132,199,0.5);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.5);
            padding: 0.8rem 2.2rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            margin-left: 1rem;
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.15);
            border-color: #fff;
        }
        @media (max-width: 768px) {
            .hero-content h1 {
                font-size: 2.5rem;
            }
            .hero-content p {
                font-size: 1.1rem;
            }
        }
        /* 通用板块 */
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 0.75rem;
            color: var(--text-main);
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 650px;
            margin: 0 auto 3rem auto;
        }
        /* 参数卡片 */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 2rem;
        }
        .feature-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-md);
            transition: all 0.3s;
            border: 1px solid var(--border-color);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-xl);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 1.2rem;
            background: rgba(14,165,233,0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--primary);
        }
        .feature-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        /* 分类入口卡片 */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }
        .category-card {
            display: block;
            background: #fff;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all 0.3s;
            border: 1px solid var(--border-color);
            text-decoration: none;
        }
        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-xl);
        }
        .category-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .category-card-body {
            padding: 1.5rem;
        }
        .category-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .category-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        .badge {
            display: inline-block;
            background: rgba(14,165,233,0.1);
            color: var(--primary);
            padding: 0.25rem 1rem;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }
        /* 最新信息列表 */
        .cms-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .cms-item {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .cms-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .cms-item h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .cms-item h3 a:hover {
            color: var(--primary);
        }
        .cms-meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.8rem;
            display: flex;
            gap: 1rem;
        }
        /* 数据区块 */
        .stats-band {
            background: var(--bg-dark);
            color: #fff;
            padding: 4rem 0;
            text-align: center;
        }
        .stats-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 3rem;
        }
        .stat-item h2 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-light);
        }
        .stat-item p {
            font-size: 1rem;
            color: rgba(255,255,255,0.7);
        }
        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
        }
        .faq-question {
            width: 100%;
            padding: 1.2rem 1.5rem;
            text-align: left;
            background: none;
            border: none;
            font-size: 1.05rem;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: #f1f5f9;
        }
        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-muted);
            display: none;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        /* CTA 区块 */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            text-align: center;
            padding: 4rem 2rem;
            border-radius: var(--radius-xl);
            margin: 4rem auto;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .cta-section p {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-bottom: 2rem;
        }
        /* Footer */
        .footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 3rem 0;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 2rem;
        }
        .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
        }
        .footer-links {
            display: flex;
            gap: 2rem;
        }
        .footer-links a {
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .copyright {
            text-align: center;
            margin-top: 2rem;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }
        @media (max-width: 520px) {
            .footer-content {
                flex-direction: column;
                text-align: center;
            }
            .btn-outline {
                margin-left: 0;
                margin-top: 1rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #4F46E5;
            --primary-dark: #3730A3;
            --primary-light: #818CF8;
            --primary-surface: #EEF2FF;
            --accent: #F59E0B;
            --accent-light: #FEF3C7;
            --accent-dark: #D97706;
            --bg: #F8FAFC;
            --bg-white: #FFFFFF;
            --bg-soft: #F1F5F9;
            --text: #1E293B;
            --text-secondary: #64748B;
            --text-weak: #94A3B8;
            --border: #E2E8F0;
            --border-light: #F1F5F9;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.06);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.15), 0 8px 20px rgba(0,0,0,0.08);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --nav-height: 62px;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { text-decoration: none; color: inherit; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }

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

        /* ========== NAVIGATION ========== */
        .capsule-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(226,232,240,0.7);
            border-radius: var(--radius-full);
            box-shadow: var(--shadow-lg);
            width: auto;
            max-width: calc(100vw - 32px);
            transition: var(--transition);
        }
        .capsule-nav.scrolled {
            box-shadow: var(--shadow-xl);
            background: rgba(255,255,255,0.96);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--primary);
            white-space: nowrap;
            padding: 4px 6px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-logo i { font-size: 1.25rem; color: var(--accent); }
        .nav-logo:hover { color: var(--primary-dark); }
        .nav-links { display: flex; align-items: center; gap: 4px; }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover { color: var(--primary); background: var(--primary-surface); }
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-surface);
            font-weight: 600;
        }
        .nav-cta {
            background: var(--primary) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 9px 20px !important;
            border-radius: var(--radius-full) !important;
            box-shadow: 0 2px 8px rgba(79,70,229,0.3);
            transition: var(--transition);
        }
        .nav-cta:hover {
            background: var(--primary-dark) !important;
            box-shadow: 0 4px 16px rgba(79,70,229,0.4);
            transform: translateY(-1px);
            color: #fff !important;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-toggle:hover { color: var(--primary); background: var(--primary-surface); }

        @media (max-width: 768px) {
            .capsule-nav {
                top: 10px;
                padding: 8px 14px;
                border-radius: var(--radius-xl);
                gap: 4px;
            }
            .nav-logo { font-size: 0.95rem; }
            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 10px);
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(255,255,255,0.97);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border-radius: var(--radius-lg);
                padding: 8px;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--border);
                gap: 2px;
            }
            .nav-links.open { display: flex; }
            .nav-links a { width: 100%; justify-content: center; padding: 11px 16px; }
            .nav-cta { width: 100%; justify-content: center; }
            .mobile-toggle { display: flex; align-items: center; justify-content: center; }
        }
        @media (max-width: 520px) {
            .capsule-nav { top: 6px; padding: 7px 12px; border-radius: var(--radius-lg); }
            .nav-logo { font-size: 0.85rem; gap: 5px; }
            .nav-logo i { font-size: 1.05rem; }
            .mobile-toggle { font-size: 1.2rem; padding: 5px 8px; }
        }

        /* ========== ARTICLE BANNER ========== */
        .article-banner {
            position: relative;
            padding: 120px 0 64px;
            background: linear-gradient(160deg, #1E293B 0%, #0F172A 40%, #1a1a2e 100%);
            overflow: hidden;
            margin-bottom: 0;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15,23,42,0.3) 0%, rgba(15,23,42,0.85) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 20px;
            font-size: 0.875rem;
            color: rgba(255,255,255,0.7);
        }
        .breadcrumb a {
            color: rgba(255,255,255,0.8);
            transition: var(--transition);
        }
        .breadcrumb a:hover { color: #fff; }
        .breadcrumb .sep { color: rgba(255,255,255,0.4); font-size: 0.7rem; }
        .breadcrumb .current { color: var(--accent); font-weight: 500; }
        .article-banner-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }
        .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 14px;
            background: rgba(245,158,11,0.2);
            color: var(--accent);
            border: 1px solid rgba(245,158,11,0.3);
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }
        .article-date {
            color: rgba(255,255,255,0.6);
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .article-banner h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.35;
            letter-spacing: -0.02em;
            max-width: 800px;
        }

        @media (max-width: 768px) {
            .article-banner { padding: 100px 0 48px; }
            .article-banner h1 { font-size: 1.6rem; }
            .breadcrumb { font-size: 0.8rem; }
        }
        @media (max-width: 520px) {
            .article-banner { padding: 90px 0 40px; }
            .article-banner h1 { font-size: 1.35rem; }
        }

        /* ========== ARTICLE CONTENT ========== */
        .article-main {
            padding: 0 0 64px;
            flex: 1;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
            margin-top: -30px;
            position: relative;
            z-index: 5;
        }
        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .article-body .content-html {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body .content-html h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
            margin: 32px 0 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-surface);
            letter-spacing: -0.01em;
        }
        .article-body .content-html h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text);
            margin: 24px 0 10px;
        }
        .article-body .content-html p {
            margin-bottom: 16px;
            color: var(--text);
        }
        .article-body .content-html ul,
        .article-body .content-html ol {
            margin: 12px 0 16px 20px;
        }
        .article-body .content-html li {
            margin-bottom: 8px;
            position: relative;
            padding-left: 8px;
        }
        .article-body .content-html ul li::before {
            content: '';
            position: absolute;
            left: -16px;
            top: 10px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
        }
        .article-body .content-html strong { font-weight: 700; color: #0F172A; }
        .article-body .content-html img {
            border-radius: var(--radius);
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content-html blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            margin: 20px 0;
            background: var(--primary-surface);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i { color: var(--accent); }
        .sidebar-recommend-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-recommend-item {
            display: flex;
            gap: 12px;
            align-items: center;
            padding: 10px;
            border-radius: var(--radius);
            transition: var(--transition);
            cursor: pointer;
            border: 1px solid transparent;
        }
        .sidebar-recommend-item:hover {
            background: var(--bg-soft);
            border-color: var(--border);
        }
        .sidebar-recommend-item img {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .sidebar-recommend-item .info h5 {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 4px;
        }
        .sidebar-recommend-item .info span {
            font-size: 0.75rem;
            color: var(--text-weak);
        }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tag {
            padding: 5px 12px;
            background: var(--bg-soft);
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            color: var(--text-secondary);
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .sidebar-tag:hover {
            background: var(--primary-surface);
            color: var(--primary);
            border-color: var(--primary-light);
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }
            .sidebar-card { flex: 1; min-width: 240px; }
        }
        @media (max-width: 768px) {
            .article-body { padding: 28px 20px; border-radius: var(--radius); }
            .article-body .content-html { font-size: 0.98rem; }
            .article-body .content-html h2 { font-size: 1.25rem; }
            .article-layout { margin-top: -20px; }
            .article-sidebar { flex-direction: column; }
            .sidebar-card { min-width: auto; }
        }
        @media (max-width: 520px) {
            .article-body { padding: 20px 16px; }
            .article-body .content-html { font-size: 0.9rem; line-height: 1.75; }
            .article-body .content-html h2 { font-size: 1.15rem; margin-top: 24px; }
        }

        /* ========== NOT FOUND ========== */
        .not-found-section {
            padding: 120px 0 80px;
            text-align: center;
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .not-found-card {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-light);
            max-width: 520px;
            width: 100%;
        }
        .not-found-card .icon-circle {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--primary-surface);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 2rem;
            color: var(--primary);
        }
        .not-found-card h2 { font-size: 1.5rem; font-weight: 700; color: var(--text); margin-bottom: 10px; }
        .not-found-card p { color: var(--text-secondary); margin-bottom: 24px; }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 11px 24px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(79,70,229,0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(79,70,229,0.4);
            transform: translateY(-1px);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 64px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            top: -60px;
            right: -80px;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            bottom: -50px;
            left: -40px;
            pointer-events: none;
        }
        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .cta-inner p {
            color: rgba(255,255,255,0.85);
            font-size: 1.1rem;
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-accent {
            background: var(--accent);
            color: #1E293B;
            box-shadow: 0 4px 16px rgba(245,158,11,0.4);
            font-size: 1rem;
            padding: 13px 32px;
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: 0 6px 24px rgba(245,158,11,0.5);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .cta-section { padding: 48px 0; }
            .cta-inner h2 { font-size: 1.5rem; }
            .cta-inner p { font-size: 0.95rem; }
        }
        @media (max-width: 520px) {
            .cta-section { padding: 40px 0; }
            .cta-inner h2 { font-size: 1.3rem; }
        }

        /* ========== FOOTER ========== */
        .footer {
            background: #0F172A;
            color: rgba(255,255,255,0.7);
            padding: 40px 0 28px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 20px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.1rem;
            color: #fff;
        }
        .footer-logo i { color: var(--accent); font-size: 1.2rem; }
        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .footer-links a {
            color: rgba(255,255,255,0.6);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .footer-links a:hover { color: #fff; }
        .copyright {
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.4);
            padding-top: 16px;
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        @media (max-width: 768px) {
            .footer-content { flex-direction: column; text-align: center; }
            .footer-links { justify-content: center; gap: 14px; }
        }

/* roulang page: category1 */
:root {
            --primary: #4d8af7;
            --primary-light: #6da3f9;
            --primary-dark: #3a6fd4;
            --accent: #ff7b3d;
            --accent-light: #ff9a65;
            --accent-gold: #f5a623;
            --bg-body: #080c14;
            --bg-surface: #0f1520;
            --bg-card: #141d2b;
            --bg-card-hover: #192539;
            --bg-nav: rgba(14, 20, 33, 0.85);
            --bg-badge: rgba(77, 138, 247, 0.15);
            --text: #e4e8f0;
            --text-heading: #f0f3f8;
            --text-muted: #8b95a8;
            --text-dim: #5e687a;
            --border: #1c2840;
            --border-light: #243050;
            --border-glow: rgba(77, 138, 247, 0.35);
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.25);
            --shadow: 0 4px 20px rgba(0,0,0,0.35);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
            --shadow-card: 0 2px 16px rgba(0,0,0,0.3);
            --shadow-card-hover: 0 8px 36px rgba(77,138,247,0.2);
            --shadow-btn: 0 4px 18px rgba(255,123,61,0.35);
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --container-narrow: 960px;
            --nav-height: 64px;
            --section-gap: 72px;
            --section-gap-sm: 48px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg-body);
            min-height: 100vh;
            background-image:
                radial-gradient(ellipse at 15% 20%, rgba(77, 138, 247, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 60%, rgba(255, 123, 61, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 40% 85%, rgba(77, 138, 247, 0.03) 0%, transparent 50%);
            background-attachment: fixed;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input {
            font-family: inherit;
            outline: none;
        }

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

        .container-narrow {
            max-width: var(--container-narrow);
        }

        /* ========== HEADER / NAV ========== */
        .capsule-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: calc(100% - 40px);
            max-width: 1100px;
            background: var(--bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-light);
            border-radius: 50px;
            padding: 8px 16px 8px 22px;
            box-shadow: 0 4px 28px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
            transition: all var(--transition);
        }

        .capsule-nav.scrolled {
            top: 8px;
            box-shadow: 0 6px 36px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.06) inset;
            background: rgba(10, 16, 28, 0.92);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 9px;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-heading);
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-logo i {
            color: var(--primary);
            font-size: 1.35rem;
            transition: transform var(--transition-fast);
        }

        .nav-logo:hover {
            color: #fff;
        }

        .nav-logo:hover i {
            transform: scale(1.12);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 28px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-links a.active {
            color: #fff;
            background: var(--primary-dark);
            font-weight: 600;
            box-shadow: 0 2px 12px rgba(77, 138, 247, 0.3);
        }

        .nav-links a.nav-cta {
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: 28px;
            box-shadow: var(--shadow-btn);
            transition: all var(--transition);
        }

        .nav-links a.nav-cta:hover {
            background: var(--accent-light);
            box-shadow: 0 6px 24px rgba(255, 123, 61, 0.5);
            transform: translateY(-1px);
            color: #fff;
        }

        .nav-links a.nav-cta i {
            margin-right: 5px;
            font-size: 0.9rem;
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            color: #fff;
            font-size: 1.4rem;
            padding: 8px 10px;
            border-radius: 50%;
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-color: var(--bg-surface);
            margin-top: 20px;
            border-radius: 0 0 var(--radius-xl) var(--radius-xl);
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 12, 20, 0.65) 0%, rgba(8, 12, 20, 0.85) 60%, rgba(8, 12, 20, 0.95) 100%);
            z-index: 1;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 30% 40%, rgba(77, 138, 247, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 30%, rgba(255, 123, 61, 0.08) 0%, transparent 45%);
            z-index: 2;
        }

        .banner-content {
            position: relative;
            z-index: 3;
            padding: 80px 24px 60px;
            max-width: 700px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--primary-light);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .breadcrumb .sep {
            color: var(--text-dim);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
        }

        .banner-content h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.03em;
            margin-bottom: 12px;
            line-height: 1.25;
        }

        .banner-content h1 .highlight {
            background: linear-gradient(135deg, var(--primary-light), #8ab8ff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .banner-content .banner-desc {
            font-size: 1.08rem;
            color: var(--text-muted);
            line-height: 1.65;
            max-width: 540px;
            margin: 0 auto 24px;
        }

        .banner-stats {
            display: flex;
            gap: 36px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .banner-stat {
            text-align: center;
        }

        .banner-stat .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
        }

        .banner-stat .stat-num span {
            color: var(--accent-gold);
        }

        .banner-stat .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-sm {
            padding: var(--section-gap-sm) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.02em;
            margin-bottom: 10px;
        }

        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 500px;
            margin: 0 auto;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--primary-light);
            background: var(--bg-badge);
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        /* ========== GAME GRID ========== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .game-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            position: relative;
        }

        .game-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .game-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-surface);
        }

        .game-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .game-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }

        .game-card .card-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: var(--radius-xs);
            letter-spacing: 0.03em;
            z-index: 2;
        }

        .badge-hot {
            background: #e74c3c;
            color: #fff;
        }

        .badge-new {
            background: #27ae60;
            color: #fff;
        }

        .badge-popular {
            background: var(--accent-gold);
            color: #1a1a1a;
        }

        .game-card .card-body {
            padding: 16px 18px 20px;
        }

        .game-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
            line-height: 1.3;
        }

        .game-card .card-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .game-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .game-card .card-meta i {
            font-size: 0.7rem;
            color: var(--primary-light);
        }

        .game-card .card-desc {
            font-size: 0.88rem;
            color: var(--text-dim);
            line-height: 1.5;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: 28px;
            transition: all var(--transition);
            letter-spacing: 0.02em;
            cursor: pointer;
            text-align: center;
            justify-content: center;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 3px 14px rgba(77, 138, 247, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            box-shadow: 0 6px 22px rgba(77, 138, 247, 0.45);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 1px solid var(--border-light);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: #fff;
            background: rgba(77, 138, 247, 0.08);
        }

        .btn-sm {
            font-size: 0.82rem;
            padding: 7px 14px;
            border-radius: 22px;
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }

        .btn-accent:hover {
            background: var(--accent-light);
            box-shadow: 0 6px 24px rgba(255, 123, 61, 0.5);
            transform: translateY(-2px);
        }

        /* ========== RANKING LIST ========== */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 14px 20px;
            transition: all var(--transition);
        }

        .ranking-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            background: var(--bg-card-hover);
        }

        .ranking-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-dim);
            min-width: 44px;
            text-align: center;
            flex-shrink: 0;
        }

        .ranking-item:nth-child(1) .ranking-num {
            color: #f5a623;
        }

        .ranking-item:nth-child(2) .ranking-num {
            color: #a0b4c8;
        }

        .ranking-item:nth-child(3) .ranking-num {
            color: #c48b5c;
        }

        .ranking-thumb {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-surface);
        }

        .ranking-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .ranking-info {
            flex: 1;
            min-width: 0;
        }

        .ranking-info .rank-title {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-heading);
            margin-bottom: 2px;
        }

        .ranking-info .rank-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .ranking-downloads {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--accent-gold);
            flex-shrink: 0;
            white-space: nowrap;
        }

        /* ========== STEPS / GUIDE ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 20px 24px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }

        .step-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            background: var(--bg-card-hover);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-dark);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 16px;
            box-shadow: 0 4px 16px rgba(77, 138, 247, 0.3);
        }

        .step-card h4 {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        /* ========== FEATURE HIGHLIGHTS ========== */
        .features-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 26px 22px 24px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
        }

        .feature-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            background: var(--bg-card-hover);
            transform: translateY(-2px);
        }

        .feature-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            flex-shrink: 0;
        }

        .feature-icon.blue {
            background: rgba(77, 138, 247, 0.18);
            color: var(--primary-light);
        }

        .feature-icon.green {
            background: rgba(39, 174, 96, 0.18);
            color: #2ecc71;
        }

        .feature-icon.orange {
            background: rgba(255, 123, 61, 0.18);
            color: var(--accent-light);
        }

        .feature-card h4 {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-heading);
        }

        .feature-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.55;
            flex: 1;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border-light);
        }

        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-heading);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color var(--transition-fast);
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.75rem;
            color: var(--text-dim);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary-light);
        }

        .faq-item[open] summary {
            color: #fff;
        }

        .faq-item[open] {
            border-color: var(--border-glow);
            box-shadow: 0 4px 20px rgba(77, 138, 247, 0.12);
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--bg-surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-xl);
            padding: 52px 36px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 30%, rgba(77, 138, 247, 0.1) 0%, transparent 65%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            position: relative;
        }

        .cta-section p {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 28px;
            position: relative;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn {
            font-size: 1.05rem;
            padding: 13px 32px;
            position: relative;
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--bg-surface);
            border-top: 1px solid var(--border);
            padding: 36px 0 24px;
            margin-top: var(--section-gap);
        }

        .footer-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 20px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-heading);
        }

        .footer-logo i {
            color: var(--primary);
            font-size: 1.25rem;
        }

        .footer-links {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .footer-links a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: #fff;
        }

        .copyright {
            font-size: 0.82rem;
            color: var(--text-dim);
            text-align: center;
            padding-top: 16px;
            border-top: 1px solid var(--border);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .features-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .banner-content h1 {
                font-size: 2.2rem;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
            .banner-stats {
                gap: 24px;
            }
            .banner-stat .stat-num {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            .capsule-nav {
                border-radius: 36px;
                padding: 8px 14px 8px 18px;
                width: calc(100% - 24px);
                top: 10px;
            }
            .nav-links {
                position: absolute;
                top: calc(100% + 10px);
                left: 0;
                right: 0;
                flex-direction: column;
                background: var(--bg-nav);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border: 1px solid var(--border-light);
                border-radius: var(--radius-lg);
                padding: 12px 8px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                display: none;
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                justify-content: center;
                padding: 11px 16px;
                border-radius: var(--radius);
            }
            .mobile-toggle {
                display: flex;
            }
            .game-grid {
                grid-template-columns: 1fr;
                gap: 14px;
                max-width: 440px;
                margin: 0 auto;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .features-row {
                grid-template-columns: 1fr;
                gap: 12px;
                max-width: 440px;
                margin: 0 auto;
            }
            .page-banner {
                min-height: 260px;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .banner-content {
                padding: 70px 20px 44px;
            }
            .banner-content h1 {
                font-size: 1.8rem;
            }
            .banner-content .banner-desc {
                font-size: 0.95rem;
            }
            .banner-stats {
                gap: 18px;
            }
            .banner-stat .stat-num {
                font-size: 1.3rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 30px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .ranking-item {
                flex-wrap: wrap;
                gap: 10px;
                padding: 12px 14px;
            }
            .ranking-num {
                font-size: 1.2rem;
                min-width: 32px;
            }
            .ranking-thumb {
                width: 40px;
                height: 40px;
                border-radius: 8px;
            }
            .cta-section {
                padding: 36px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer-content {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            .capsule-nav {
                border-radius: 28px;
                padding: 6px 10px 6px 14px;
                width: calc(100% - 16px);
                top: 8px;
            }
            .nav-logo {
                font-size: 1rem;
                gap: 6px;
            }
            .nav-logo i {
                font-size: 1.1rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 10px;
                max-width: 340px;
                margin: 0 auto;
            }
            .page-banner {
                min-height: 220px;
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .banner-content {
                padding: 56px 16px 32px;
            }
            .banner-content h1 {
                font-size: 1.5rem;
            }
            .banner-stats {
                gap: 12px;
                flex-direction: column;
                align-items: center;
            }
            .banner-stat .stat-num {
                font-size: 1.2rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
                gap: 4px;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .game-card .card-body {
                padding: 12px 14px 16px;
            }
            .btn {
                font-size: 0.82rem;
                padding: 8px 16px;
            }
            .ranking-downloads {
                font-size: 0.78rem;
            }
        }

        /* ========== UTILITY ========== */
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mt-sm {
            margin-top: 12px;
        }
        .mt-md {
            margin-top: 24px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }