/* roulang page: index */
:root {
            --primary: #00d4ff;
            --primary-dark: #0099cc;
            --primary-light: #66e5ff;
            --primary-glow: rgba(0, 212, 255, 0.25);
            --secondary: #8b5cf6;
            --secondary-dark: #7c3aed;
            --secondary-light: #a78bfa;
            --bg-dark: #0a0e1a;
            --bg-card: #111827;
            --bg-surface: #0f172a;
            --bg-elevated: #1a2332;
            --text-primary: #f8fafc;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: #1e293b;
            --border-glow: rgba(0, 212, 255, 0.15);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
            --shadow-glow: 0 4px 30px rgba(0,212,255,0.12);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* 霓虹渐变文字 */
        .text-glow {
            background: linear-gradient(135deg, #00d4ff 0%, #8b5cf6 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* 霓虹边框 */
        .border-glow {
            border: 1px solid var(--border-glow);
            box-shadow: 0 0 20px rgba(0,212,255,0.06), inset 0 0 20px rgba(0,212,255,0.02);
        }

        .border-glow:hover {
            border-color: rgba(0,212,255,0.3);
            box-shadow: 0 0 30px rgba(0,212,255,0.12), inset 0 0 30px rgba(0,212,255,0.04);
        }

        /* 霓虹按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 50px;
            background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
            color: #0a0e1a;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0,212,255,0.25);
            text-decoration: none;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 35px rgba(0,212,255,0.35);
            color: #0a0e1a;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(0,212,255,0.2);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 50px;
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            font-size: 1.05rem;
            border: 1.5px solid var(--primary);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-secondary:hover {
            background: rgba(0,212,255,0.08);
            border-color: var(--primary-light);
            color: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 4px 20px rgba(0,212,255,0.1);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 50px;
            background: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(139,92,246,0.25);
            text-decoration: none;
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 35px rgba(139,92,246,0.35);
            color: #fff;
        }

        /* 卡片 */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            padding: 32px 28px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .card:hover {
            border-color: rgba(0,212,255,0.2);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        .card-elevated {
            background: var(--bg-elevated);
            border: 1px solid rgba(0,212,255,0.08);
            box-shadow: 0 8px 40px rgba(0,0,0,0.3);
        }

        /* 徽章 */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: rgba(0,212,255,0.1);
            color: var(--primary);
            border: 1px solid rgba(0,212,255,0.15);
        }
        .badge-accent {
            background: rgba(139,92,246,0.1);
            color: var(--secondary-light);
            border-color: rgba(139,92,246,0.15);
        }
        .badge-gold {
            background: rgba(251,191,36,0.1);
            color: #fbbf24;
            border-color: rgba(251,191,36,0.15);
        }

        /* 统计数字 */
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, #00d4ff 0%, #8b5cf6 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        /* 分隔线 */
        .divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, #00d4ff, #8b5cf6);
            border-radius: 4px;
            margin: 16px 0 24px 0;
        }
        .divider-center {
            margin-left: auto;
            margin-right: auto;
        }

        /* 导航 */
        .navbar {
            background: rgba(10, 14, 26, 0.92);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid rgba(0,212,255,0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0 24px;
            transition: var(--transition);
        }
        .navbar-scrolled {
            background: rgba(10, 14, 26, 0.98);
            box-shadow: 0 4px 30px rgba(0,0,0,0.4);
        }
        .navbar-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .navbar-logo {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, #00d4ff 0%, #8b5cf6 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 0.02em;
            white-space: nowrap;
            text-decoration: none;
        }
        .navbar-logo:hover {
            opacity: 0.9;
        }
        .navbar-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .navbar-links a {
            padding: 8px 18px;
            border-radius: 50px;
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            text-decoration: none;
            position: relative;
        }
        .navbar-links a:hover {
            color: var(--text-primary);
            background: rgba(0,212,255,0.06);
        }
        .navbar-links a.active {
            color: var(--primary);
            background: rgba(0,212,255,0.1);
            box-shadow: 0 0 20px rgba(0,212,255,0.06);
        }
        .navbar-links a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 12px rgba(0,212,255,0.4);
        }
        .navbar-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .navbar-toggle:hover {
            background: rgba(255,255,255,0.05);
        }
        @media (max-width: 768px) {
            .navbar-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(10,14,26,0.98);
                backdrop-filter: blur(24px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid rgba(0,212,255,0.08);
                box-shadow: 0 20px 40px rgba(0,0,0,0.5);
            }
            .navbar-links.open {
                display: flex;
            }
            .navbar-links a {
                width: 100%;
                padding: 12px 18px;
            }
            .navbar-toggle {
                display: block;
            }
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 24px;
            background: linear-gradient(135deg, #0a0e1a 0%, #0f172a 50%, #0a0e1a 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0,212,255,0.04) 0%, transparent 70%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 50px;
            background: rgba(0,212,255,0.08);
            border: 1px solid rgba(0,212,255,0.12);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 28px;
            backdrop-filter: blur(4px);
        }
        .hero h1 {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
        }
        .hero p {
            font-size: clamp(1.05rem, 2vw, 1.25rem);
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 40px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-actions .btn-primary,
        .hero-actions .btn-secondary {
            min-width: 180px;
            justify-content: center;
        }

        /* 板块通用 */
        .section {
            padding: 100px 0;
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 60px;
        }
        .section-header h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            line-height: 1.7;
        }
        .section-header .divider {
            margin: 16px auto 24px;
        }

        /* 网格 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-3, .grid-4 {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section {
                padding: 60px 0;
            }
            .section-header {
                margin-bottom: 40px;
            }
        }
        @media (max-width: 520px) {
            .grid-3, .grid-4 {
                grid-template-columns: 1fr;
            }
            .hero {
                min-height: auto;
                padding: 60px 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                max-width: 300px;
            }
        }

        /* 特色图标卡片 */
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            background: rgba(0,212,255,0.08);
            color: var(--primary);
            margin-bottom: 18px;
            border: 1px solid rgba(0,212,255,0.08);
            transition: var(--transition);
        }
        .card:hover .feature-icon {
            background: rgba(0,212,255,0.14);
            border-color: rgba(0,212,255,0.2);
            box-shadow: 0 0 30px rgba(0,212,255,0.08);
        }
        .feature-icon.accent {
            background: rgba(139,92,246,0.08);
            color: var(--secondary-light);
            border-color: rgba(139,92,246,0.08);
        }
        .card:hover .feature-icon.accent {
            background: rgba(139,92,246,0.14);
            border-color: rgba(139,92,246,0.2);
        }

        /* 资讯列表 */
        .post-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(30,41,59,0.5);
            transition: var(--transition);
        }
        .post-item:last-child {
            border-bottom: none;
        }
        .post-item:hover {
            padding-left: 8px;
        }
        .post-thumb {
            width: 120px;
            min-height: 80px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-elevated);
        }
        .post-info h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .post-info h3 a {
            color: var(--text-primary);
            text-decoration: none;
        }
        .post-info h3 a:hover {
            color: var(--primary);
        }
        .post-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .post-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .post-excerpt {
            color: var(--text-secondary);
            font-size: 0.92rem;
            margin-top: 6px;
            line-height: 1.6;
        }
        @media (max-width: 640px) {
            .post-item {
                flex-direction: column;
                gap: 12px;
            }
            .post-thumb {
                width: 100%;
                height: 180px;
            }
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            padding: 24px 28px;
            margin-bottom: 16px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: rgba(0,212,255,0.12);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            gap: 16px;
        }
        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 16px;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(0,212,255,0.04) 0%, rgba(139,92,246,0.04) 100%);
            border: 1px solid rgba(0,212,255,0.06);
            border-radius: var(--radius);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 50%, rgba(0,212,255,0.03) 0%, transparent 50%),
                        radial-gradient(circle at 70% 50%, rgba(139,92,246,0.03) 0%, transparent 50%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
        }
        .cta-section p {
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
            position: relative;
        }
        .cta-section .btn-primary {
            position: relative;
        }

        /* 页脚 */
        .footer {
            background: rgba(10,14,26,0.9);
            border-top: 1px solid rgba(0,212,255,0.04);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            font-size: 1.2rem;
            font-weight: 700;
            background: linear-gradient(135deg, #00d4ff 0%, #8b5cf6 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(30,41,59,0.5);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section {
                padding: 40px 24px;
            }
        }

        /* 滚动渐入动画 */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 图片遮罩与装饰 */
        .img-frame {
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            transition: var(--transition);
        }
        .img-frame:hover {
            border-color: rgba(0,212,255,0.15);
            box-shadow: var(--shadow-glow);
        }

        /* 标签 */
        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(0,212,255,0.06);
            color: var(--text-secondary);
            border: 1px solid rgba(0,212,255,0.06);
            transition: var(--transition);
        }
        .tag:hover {
            background: rgba(0,212,255,0.1);
            color: var(--primary);
            border-color: rgba(0,212,255,0.12);
        }

        /* 列表样式 */
        .list-check {
            list-style: none;
            padding: 0;
        }
        .list-check li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 8px 0;
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .list-check li i {
            color: var(--primary);
            margin-top: 2px;
            flex-shrink: 0;
        }

        /* 状态徽章动画 */
        .badge-pulse {
            animation: pulse-glow 2s ease-in-out infinite;
        }
        @keyframes pulse-glow {
            0%, 100% { box-shadow: 0 0 8px rgba(0,212,255,0.1); }
            50% { box-shadow: 0 0 20px rgba(0,212,255,0.25); }
        }

        /* 选择文本颜色 */
        ::selection {
            background: rgba(0,212,255,0.2);
            color: #fff;
        }

        /* 滚动条 */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: #1e293b;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #334155;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #00e5ff;
            --primary-dark: #00b8d4;
            --accent: #aa00ff;
            --accent-light: #d500f9;
            --bg-dark: #08081a;
            --bg-card: #0f0f2a;
            --bg-card-hover: #181845;
            --text-white: #f0f0ff;
            --text-muted: #9090b0;
            --text-dim: #606080;
            --border-glow: rgba(0, 229, 255, 0.15);
            --border-accent: rgba(170, 0, 255, 0.25);
            --shadow-neon: 0 0 30px rgba(0, 229, 255, 0.08);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6);
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--accent-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-dark);
            border-radius: 6px;
        }

        /* ===== Navigation ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 8, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glow);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .navbar.scrolled {
            background: rgba(8, 8, 26, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
        }
        .navbar-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .navbar-logo {
            font-size: 1.5rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 1px;
            transition: opacity 0.3s ease;
            white-space: nowrap;
        }
        .navbar-logo:hover {
            opacity: 0.85;
            -webkit-text-fill-color: transparent;
        }
        .navbar-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-links li a {
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all 0.3s ease;
            position: relative;
            letter-spacing: 0.3px;
        }
        .navbar-links li a:hover {
            color: var(--text-white);
            background: rgba(0, 229, 255, 0.06);
        }
        .navbar-links li a.active {
            color: var(--primary);
            background: rgba(0, 229, 255, 0.1);
            box-shadow: inset 0 0 20px rgba(0, 229, 255, 0.05), 0 0 20px rgba(0, 229, 255, 0.02);
        }
        .navbar-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 30%;
            height: 2px;
            background: var(--primary);
            border-radius: 4px;
            box-shadow: 0 0 12px var(--primary);
        }
        .navbar-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s ease;
        }
        .navbar-toggle:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 8, 26, 0.88) 0%, rgba(8, 8, 26, 0.72) 50%, rgba(8, 8, 26, 0.88) 100%);
            z-index: 1;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 80%, rgba(0, 229, 255, 0.06), transparent 70%);
            z-index: 1;
        }
        .article-hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }
        .article-hero .hero-category {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 40px;
            background: rgba(0, 229, 255, 0.12);
            border: 1px solid rgba(0, 229, 255, 0.2);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--primary);
            letter-spacing: 1px;
            margin-bottom: 20px;
            backdrop-filter: blur(6px);
        }
        .article-hero h1 {
            font-size: clamp(1.8rem, 5vw, 3rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-white);
            margin-bottom: 20px;
            text-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
        }
        .article-hero .hero-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 0.95rem;
            color: var(--text-muted);
        }
        .article-hero .hero-meta i {
            margin-right: 6px;
            color: var(--primary);
        }
        .article-hero .hero-meta span {
            display: inline-flex;
            align-items: center;
        }

        /* ===== Article Body ===== */
        .article-section {
            padding: 60px 0 80px;
            background: var(--bg-dark);
        }
        .article-wrapper {
            max-width: 820px;
            margin: 0 auto;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            border: 1px solid var(--border-glow);
            box-shadow: var(--shadow-card), var(--shadow-neon);
        }
        .article-wrapper .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: #d0d0e0;
        }
        .article-wrapper .article-content p {
            margin-bottom: 1.4em;
        }
        .article-wrapper .article-content h2,
        .article-wrapper .article-content h3,
        .article-wrapper .article-content h4 {
            color: var(--text-white);
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            font-weight: 600;
        }
        .article-wrapper .article-content h2 {
            font-size: 1.6rem;
            border-left: 4px solid var(--primary);
            padding-left: 16px;
        }
        .article-wrapper .article-content h3 {
            font-size: 1.25rem;
        }
        .article-wrapper .article-content ul,
        .article-wrapper .article-content ol {
            margin: 1em 0;
            padding-left: 1.8em;
        }
        .article-wrapper .article-content ul li {
            list-style: disc;
            margin-bottom: 0.4em;
        }
        .article-wrapper .article-content ol li {
            list-style: decimal;
            margin-bottom: 0.4em;
        }
        .article-wrapper .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-wrapper .article-content a:hover {
            color: var(--accent-light);
        }
        .article-wrapper .article-content blockquote {
            border-left: 4px solid var(--accent);
            padding: 12px 20px;
            margin: 1.5em 0;
            background: rgba(170, 0, 255, 0.06);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: #c0c0d8;
            font-style: italic;
        }
        .article-wrapper .article-content img {
            margin: 1.8em auto;
            border-radius: var(--radius-md);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }
        .article-wrapper .article-content code {
            background: rgba(0, 229, 255, 0.08);
            padding: 2px 10px;
            border-radius: 6px;
            font-size: 0.9em;
            color: var(--primary);
        }
        .article-wrapper .article-content pre {
            background: #0a0a1e;
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-md);
            padding: 20px;
            overflow-x: auto;
            margin: 1.5em 0;
        }
        .article-wrapper .article-content pre code {
            background: none;
            padding: 0;
            color: #e0e0f0;
        }

        /* ===== Article Not Found ===== */
        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-not-found i {
            font-size: 3.5rem;
            color: var(--text-dim);
            margin-bottom: 20px;
            display: block;
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
            font-size: 1.05rem;
        }
        .article-not-found a {
            display: inline-block;
            padding: 12px 32px;
            border-radius: 40px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #0a0a1a;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .article-not-found a:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 229, 255, 0.25);
            color: #0a0a1a;
        }

        /* ===== Article Tags / Share ===== */
        .article-tags {
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border-glow);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-tags .tags-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tags .tags-list span {
            padding: 4px 16px;
            border-radius: 40px;
            background: rgba(0, 229, 255, 0.06);
            border: 1px solid var(--border-glow);
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .article-tags .share-links {
            display: flex;
            gap: 12px;
        }
        .article-tags .share-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glow);
            color: var(--text-muted);
            font-size: 1rem;
            transition: all 0.3s ease;
        }
        .article-tags .share-links a:hover {
            background: rgba(0, 229, 255, 0.12);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 60px 0;
            background: linear-gradient(180deg, var(--bg-dark) 0%, #0c0c24 100%);
        }
        .related-section .section-label {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            background: rgba(170, 0, 255, 0.1);
            border: 1px solid var(--border-accent);
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--accent-light);
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .related-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 40px;
            background: linear-gradient(135deg, var(--text-white), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-glow);
            overflow: hidden;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-card);
        }
        .related-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.7), 0 0 30px rgba(0, 229, 255, 0.05);
            background: var(--bg-card-hover);
        }
        .related-card .card-img {
            height: 180px;
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.5s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 20px 22px 24px;
        }
        .related-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .related-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 14px;
            font-size: 0.8rem;
            color: var(--text-dim);
        }
        .related-card .card-body .card-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            position: relative;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 8, 26, 0.92), rgba(8, 8, 26, 0.8));
            z-index: 1;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 229, 255, 0.06), transparent 70%);
            z-index: 1;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-white);
        }
        .cta-content p {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            padding: 14px 40px;
            border-radius: 40px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border: none;
            color: #0a0a1a;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 20px rgba(0, 229, 255, 0.15);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 40px rgba(0, 229, 255, 0.25);
            color: #0a0a1a;
        }
        .btn-secondary {
            padding: 14px 40px;
            border-radius: 40px;
            background: transparent;
            border: 1px solid var(--border-glow);
            color: var(--text-white);
            font-weight: 500;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 229, 255, 0.04);
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .footer {
            background: #06061a;
            border-top: 1px solid var(--border-glow);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand h3 {
            font-size: 1.4rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color 0.3s ease;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-dim);
        }
        .footer-bottom a {
            color: var(--text-dim);
            transition: color 0.3s ease;
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .navbar-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(8, 8, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                border-bottom: 1px solid var(--border-glow);
                gap: 6px;
            }
            .navbar-links.open {
                display: flex;
            }
            .navbar-links li a {
                padding: 12px 20px;
                width: 100%;
                border-radius: 10px;
            }
            .navbar-links li a.active::after {
                display: none;
            }
            .navbar-toggle {
                display: block;
            }
            .article-hero {
                min-height: 320px;
                padding: 100px 20px 60px;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-wrapper {
                padding: 28px 20px;
                border-radius: var(--radius-md);
            }
            .article-wrapper .article-content {
                font-size: 0.98rem;
            }
            .article-tags {
                flex-direction: column;
                align-items: flex-start;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .cta-content h2 {
                font-size: 1.7rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .navbar-inner {
                padding: 0 16px;
                height: 64px;
            }
            .navbar-logo {
                font-size: 1.2rem;
            }
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-hero .hero-meta {
                font-size: 0.85rem;
                gap: 12px;
            }
            .article-wrapper {
                padding: 20px 16px;
            }
            .cta-content h2 {
                font-size: 1.4rem;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Glow Keyframes ===== */
        @keyframes neon-pulse {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(0, 229, 255, 0.05);
            }
            50% {
                box-shadow: 0 0 40px rgba(0, 229, 255, 0.12);
            }
        }
        .glow-pulse {
            animation: neon-pulse 3s ease-in-out infinite;
        }

/* roulang page: category1 */
:root {
            --primary: #fbbf24;
            --primary-dark: #f59e0b;
            --primary-glow: rgba(251, 191, 36, 0.35);
            --bg-dark: #0b0d17;
            --bg-card: #13172b;
            --bg-card-hover: #1a1f3a;
            --bg-section-alt: #0f1222;
            --text-main: #f1f5f9;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --border-color: rgba(251, 191, 36, 0.15);
            --border-glow: rgba(251, 191, 36, 0.3);
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(251, 191, 36, 0.06);
            --shadow-glow: 0 0 30px rgba(251, 191, 36, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Navigation ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 13, 23, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
            height: 70px;
        }
        .navbar:hover {
            border-bottom-color: var(--border-glow);
        }
        .navbar-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .navbar-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 1px;
            text-shadow: 0 0 20px var(--primary-glow);
            transition: var(--transition);
            white-space: nowrap;
        }
        .navbar-logo:hover {
            color: #fff;
            text-shadow: 0 0 30px var(--primary-glow);
        }
        .navbar-links {
            display: flex;
            list-style: none;
            gap: 8px;
            align-items: center;
        }
        .navbar-links li a {
            display: block;
            padding: 8px 20px;
            border-radius: 8px;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .navbar-links li a:hover {
            color: #fff;
            background: rgba(251, 191, 36, 0.08);
        }
        .navbar-links li a.active {
            color: var(--primary);
            background: rgba(251, 191, 36, 0.12);
            box-shadow: 0 0 20px rgba(251, 191, 36, 0.08);
        }
        .navbar-links li a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--primary-glow);
        }
        .navbar-toggle {
            display: none;
            color: var(--text-main);
            font-size: 1.4rem;
            padding: 8px 12px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .navbar-toggle:hover {
            background: rgba(251, 191, 36, 0.1);
            color: var(--primary);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            background: linear-gradient(135deg, rgba(11, 13, 23, 0.92), rgba(15, 18, 34, 0.88)), url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            text-align: center;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 40%, rgba(251, 191, 36, 0.04), transparent 60%),
                radial-gradient(circle at 70% 60%, rgba(251, 191, 36, 0.03), transparent 50%);
            pointer-events: none;
            animation: heroGlow 12s ease-in-out infinite alternate;
        }
        @keyframes heroGlow {
            0% {
                transform: translate(0, 0) scale(1);
            }
            100% {
                transform: translate(-5%, -5%) scale(1.05);
            }
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 50px;
            background: rgba(251, 191, 36, 0.12);
            border: 1px solid var(--border-glow);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero h1 {
            font-size: clamp(2.6rem, 7vw, 4.5rem);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #fbbf24, #f59e0b, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 60px rgba(251, 191, 36, 0.2);
        }
        .hero p {
            font-size: clamp(1.1rem, 2vw, 1.35rem);
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0b0d17;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 4px 24px var(--primary-glow);
            border: none;
        }
        .btn-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 8px 40px var(--primary-glow);
            color: #0b0d17;
        }
        .btn-primary:active {
            transform: translateY(0) scale(0.98);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(251, 191, 36, 0.25);
            color: var(--text-main);
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        .btn-secondary:hover {
            background: rgba(251, 191, 36, 0.12);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-3px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid rgba(251, 191, 36, 0.08);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
            line-height: 1.2;
        }
        .hero-stat .label {
            font-size: 0.9rem;
            color: var(--text-dim);
            margin-top: 4px;
        }

        /* ===== Sections ===== */
        .section {
            padding: 90px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        .section-header h2 {
            font-size: clamp(2rem, 4vw, 2.8rem);
            font-weight: 800;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .section-subtitle {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            background: rgba(251, 191, 36, 0.1);
            border: 1px solid var(--border-color);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        /* ===== Cards Grid ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            padding: 32px 28px;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .card:hover {
            border-color: var(--border-glow);
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow), var(--shadow-card);
            background: var(--bg-card-hover);
        }
        .card-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 18px;
            display: inline-block;
            text-shadow: 0 0 20px var(--primary-glow);
        }
        .card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }
        .card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .card-badge {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            background: rgba(251, 191, 36, 0.12);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        /* ===== Cover Cards ===== */
        .cover-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .cover-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow), var(--shadow-card);
        }
        .cover-card .cover-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .cover-card:hover .cover-img {
            transform: scale(1.03);
        }
        .cover-card .cover-body {
            padding: 22px 24px 26px;
        }
        .cover-card .cover-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .cover-card .cover-body p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .cover-card .cover-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-dim);
        }
        .cover-card .cover-meta i {
            color: var(--primary);
            width: 16px;
        }
        .cover-tag {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 50px;
            background: rgba(251, 191, 36, 0.1);
            border: 1px solid var(--border-color);
            color: var(--primary);
            font-size: 0.7rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            box-shadow: var(--shadow-card);
        }
        .step-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow), var(--shadow-card);
        }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0b0d17;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 24px var(--primary-glow);
        }
        .step-card .step-icon {
            font-size: 2.4rem;
            color: var(--primary);
            margin: 16px 0 16px;
            display: inline-block;
            text-shadow: 0 0 20px var(--primary-glow);
        }
        .step-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .step-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* ===== Testimonials / Stats ===== */
        .stat-block {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            padding: 32px 20px;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .stat-item:hover {
            border-color: var(--border-glow);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .stat-item .stat-num {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--primary);
            display: block;
            line-height: 1.2;
            text-shadow: 0 0 30px var(--primary-glow);
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 6px;
        }
        .stat-item .stat-icon {
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 12px;
            display: inline-block;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-question {
            width: 100%;
            padding: 20px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 1.05rem;
            font-weight: 600;
            color: #fff;
            text-align: left;
            background: none;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 28px 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-answer p {
            margin-bottom: 8px;
        }
        .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(11, 13, 23, 0.95), rgba(15, 18, 34, 0.9)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .cta-inner {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: clamp(2rem, 4vw, 2.8rem);
            font-weight: 800;
            margin-bottom: 16px;
            color: #fff;
        }
        .cta-inner h2 span {
            color: var(--primary);
        }
        .cta-inner p {
            color: var(--text-muted);
            font-size: 1.1rem;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== Footer ===== */
        .footer {
            background: #080a14;
            border-top: 1px solid var(--border-color);
            padding: 64px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            text-shadow: 0 0 20px var(--primary-glow);
        }
        .footer-brand p {
            color: var(--text-dim);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            color: var(--text-dim);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 28px;
            border-top: 1px solid rgba(251, 191, 36, 0.06);
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .footer-bottom span:last-child {
            font-size: 0.8rem;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-3,
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-block {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero h1 {
                font-size: clamp(2.2rem, 6vw, 3.5rem);
            }
        }

        @media (max-width: 768px) {
            .navbar-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(11, 13, 23, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border-color);
                gap: 4px;
            }
            .navbar-links.open {
                display: flex;
            }
            .navbar-links li a {
                padding: 14px 20px;
                font-size: 1rem;
                border-radius: 8px;
            }
            .navbar-toggle {
                display: block;
            }
            .hero {
                min-height: 80vh;
                padding: 100px 20px 60px;
            }
            .hero-stats {
                gap: 24px;
                padding-top: 28px;
            }
            .hero-stat .num {
                font-size: 1.6rem;
            }
            .section {
                padding: 60px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .grid-3,
            .grid-4,
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .stat-block {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .btn-primary,
            .btn-secondary {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
            .cover-card .cover-img {
                height: 180px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .navbar-inner {
                padding: 0 16px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .stat-block {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .stat-num {
                font-size: 1.8rem;
            }
            .card {
                padding: 24px 20px;
            }
            .faq-question {
                padding: 16px 20px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 20px 16px;
            }
            .footer {
                padding: 40px 0 24px;
            }
        }

        @media (min-width: 769px) {
            .navbar-links {
                display: flex !important;
            }
        }