/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #00d4ff;
            --primary-dark: #0099cc;
            --primary-glow: rgba(0, 212, 255, 0.3);
            --secondary: #a855f7;
            --secondary-glow: rgba(168, 85, 247, 0.3);
            --accent: #f97316;
            --accent-glow: rgba(249, 115, 22, 0.3);
            --bg-deep: #080c18;
            --bg-dark: #0d1225;
            --bg-card: #131b36;
            --bg-card-hover: #1a2448;
            --border-color: #1e2d5a;
            --border-glow: rgba(0, 212, 255, 0.15);
            --text-primary: #f0f4ff;
            --text-secondary: #b0c4e8;
            --text-muted: #6b7fa8;
            --font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.1);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-deep);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 通用标题 ===== */
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--primary);
            background: rgba(0, 212, 255, 0.08);
            padding: 4px 16px;
            border-radius: 20px;
            border: 1px solid rgba(0, 212, 255, 0.15);
            margin-bottom: 12px;
        }
        .section-tag i {
            font-size: 12px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-title .highlight {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-desc {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-desc {
            margin: 0 auto;
        }
        .section-header-left {
            text-align: left;
        }
        .section-header-left .section-desc {
            margin: 0;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 12px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 40px;
            transition: all var(--transition);
            border: 2px solid transparent;
            position: relative;
            overflow: hidden;
            letter-spacing: 0.3px;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #00a3cc);
            color: #080c18;
            border-color: var(--primary);
            box-shadow: 0 0 25px var(--primary-glow);
        }
        .btn-primary:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 0 40px var(--primary-glow);
            color: #080c18;
        }
        .btn-primary:active {
            transform: translateY(0) scale(0.98);
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border-color: var(--border-color);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            background: rgba(0, 212, 255, 0.05);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--accent), #ea580c);
            color: #fff;
            border-color: var(--accent);
            box-shadow: 0 0 25px var(--accent-glow);
        }
        .btn-accent:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 0 40px var(--accent-glow);
            color: #fff;
        }
        .btn-accent:active {
            transform: translateY(0) scale(0.98);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
            gap: 6px;
        }
        .btn-lg {
            padding: 16px 44px;
            font-size: 18px;
            gap: 12px;
        }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 3px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }
        .badge-primary {
            background: rgba(0, 212, 255, 0.12);
            color: var(--primary);
            border: 1px solid rgba(0, 212, 255, 0.2);
        }
        .badge-secondary {
            background: rgba(168, 85, 247, 0.12);
            color: var(--secondary);
            border: 1px solid rgba(168, 85, 247, 0.2);
        }
        .badge-accent {
            background: rgba(249, 115, 22, 0.12);
            color: var(--accent);
            border: 1px solid rgba(249, 115, 22, 0.2);
        }
        .badge-hot {
            background: rgba(239, 68, 68, 0.15);
            color: #ef4444;
            border: 1px solid rgba(239, 68, 68, 0.25);
            animation: pulse-badge 2s infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
        }

        .tag {
            display: inline-block;
            padding: 2px 12px;
            font-size: 12px;
            font-weight: 500;
            border-radius: 4px;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 212, 255, 0.05);
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-color), transparent);
            margin: 0;
            border: none;
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(8, 12, 24, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(30, 45, 90, 0.4);
            transition: background var(--transition);
        }
        .header.scrolled {
            background: rgba(8, 12, 24, 0.96);
            border-bottom-color: rgba(0, 212, 255, 0.1);
        }

        .header .container-wide {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #080c18;
            font-weight: 900;
            box-shadow: 0 0 20px var(--primary-glow);
        }
        .logo span {
            background: linear-gradient(135deg, var(--text-primary), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 30px;
            transition: all var(--transition);
            position: relative;
        }
        .nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav a.active {
            color: var(--primary);
            background: rgba(0, 212, 255, 0.08);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 10px var(--primary-glow);
        }

        .nav-cta {
            margin-left: 12px;
        }
        .nav-cta .btn {
            padding: 8px 24px;
            font-size: 14px;
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--text-primary);
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--primary);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            overflow: hidden;
            background: var(--bg-deep);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 212, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(168, 85, 247, 0.06) 0%, transparent 60%),
                linear-gradient(180deg, rgba(8, 12, 24, 0.6) 0%, rgba(8, 12, 24, 0.95) 100%);
        }
        .hero-grid {
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
            background-size: 60px 60px;
            z-index: 0;
            opacity: 0.5;
        }
        .hero .container {
            position: relative;
            z-index: 1;
            width: 100%;
        }

        .hero-content {
            max-width: 780px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid rgba(0, 212, 255, 0.15);
            padding: 5px 16px 5px 12px;
            border-radius: 30px;
            font-size: 14px;
            color: var(--primary);
            margin-bottom: 24px;
            animation: fadeInUp 0.6s ease;
        }
        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 12px var(--primary-glow);
            animation: dot-pulse 2s infinite;
        }
        @keyframes dot-pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(0.8);
            }
        }

        .hero h1 {
            font-size: 56px;
            font-weight: 900;
            line-height: 1.1;
            color: var(--text-primary);
            margin-bottom: 20px;
            letter-spacing: -1px;
            animation: fadeInUp 0.6s ease 0.1s both;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero h1 .highlight-block {
            display: block;
        }

        .hero p {
            font-size: 20px;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: 36px;
            animation: fadeInUp 0.6s ease 0.2s both;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            animation: fadeInUp 0.6s ease 0.3s both;
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 56px;
            animation: fadeInUp 0.6s ease 0.4s both;
        }
        .hero-stat {
            text-align: left;
        }
        .hero-stat .num {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.1;
        }
        .hero-stat .num i {
            color: var(--primary);
            font-size: 24px;
            margin-right: 4px;
        }
        .hero-stat .label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        @keyframes fadeInUp {
            0% {
                opacity: 0;
                transform: translateY(30px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== 板块间距 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-dark);
        }
        .section-deep {
            background: var(--bg-deep);
        }

        /* ===== 卡片通用 ===== */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition);
        }
        .card:hover {
            border-color: rgba(0, 212, 255, 0.2);
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }

        /* ===== 特色/优势板块 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card:hover {
            border-color: rgba(0, 212, 255, 0.2);
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            background: rgba(0, 212, 255, 0.08);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--primary);
            transition: all var(--transition);
            border: 1px solid rgba(0, 212, 255, 0.1);
        }
        .feature-card:hover .feature-icon {
            background: rgba(0, 212, 255, 0.15);
            box-shadow: 0 0 30px var(--primary-glow);
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 游戏分类网格 ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition));
            cursor: pointer;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
        }
        .category-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 212, 255, 0.25);
            box-shadow: var(--shadow-glow);
        }
        .category-card .cat-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            z-index: 0;
            transition: transform 0.6s ease;
        }
        .category-card:hover .cat-bg {
            transform: scale(1.05);
        }
        .category-card .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(8, 12, 24, 0.92) 0%, rgba(8, 12, 24, 0.3) 60%, rgba(8, 12, 24, 0.1) 100%);
            z-index: 1;
        }
        .category-card .cat-content {
            position: relative;
            z-index: 2;
            padding: 32px 28px;
            width: 100%;
        }
        .category-card .cat-content .badge {
            margin-bottom: 12px;
        }
        .category-card h3 {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .category-card p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            max-width: 320px;
        }
        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            transition: gap var(--transition);
        }
        .category-card:hover .cat-link {
            gap: 14px;
        }

        /* ===== 资讯/列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition);
        }
        .news-card:hover {
            border-color: rgba(0, 212, 255, 0.2);
            background: var(--bg-card-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow);
        }
        .news-card .news-img {
            width: 160px;
            min-height: 120px;
            border-radius: var(--radius-sm);
            background-size: cover;
            background-position: center;
            flex-shrink: 0;
            border: 1px solid var(--border-color);
        }
        .news-card .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-card .news-body .badge {
            margin-bottom: 8px;
        }
        .news-card .news-body h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-body h4 a {
            color: var(--text-primary);
        }
        .news-card .news-body h4 a:hover {
            color: var(--primary);
        }
        .news-card .news-body .excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 10px;
        }
        .news-card .news-body .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .news-card .news-body .meta i {
            margin-right: 4px;
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            background: var(--bg-card);
            border: 1px dashed var(--border-color);
            border-radius: var(--radius-md);
            color: var(--text-muted);
            font-size: 16px;
        }
        .news-empty i {
            font-size: 40px;
            display: block;
            margin-bottom: 16px;
            color: var(--border-color);
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }
        .step-card:hover {
            border-color: rgba(0, 212, 255, 0.2);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .step-card .step-num {
            width: 52px;
            height: 52px;
            margin: 0 auto 20px;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(168, 85, 247, 0.12));
            border: 1px solid rgba(0, 212, 255, 0.15);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            transition: all var(--transition);
        }
        .step-card:hover .step-num {
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(168, 85, 247, 0.2));
            box-shadow: 0 0 30px var(--primary-glow);
            transform: scale(1.08);
        }
        .step-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .step-connector {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(0, 212, 255, 0.15);
        }
        .faq-item.active {
            border-color: rgba(0, 212, 255, 0.25);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            background: transparent;
            transition: all var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(0, 212, 255, 0.08);
            color: var(--primary);
            transition: all var(--transition);
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
            background: rgba(0, 212, 255, 0.15);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }
        .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .cta-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.05) 0%, transparent 70%);
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 38px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 15px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 16px;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: rgba(0, 212, 255, 0.1);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .categories-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero h1 {
                font-size: 44px;
            }
            .section-title {
                font-size: 30px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }

            .nav {
                display: none;
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(8, 12, 24, 0.98);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-color);
                padding: 16px 20px;
                flex-direction: column;
                gap: 4px;
                align-items: stretch;
            }
            .nav.open {
                display: flex;
            }
            .nav a {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: 8px;
            }
            .nav a.active::after {
                display: none;
            }
            .nav a.active {
                background: rgba(0, 212, 255, 0.1);
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 8px;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
                padding: 12px;
            }

            .nav-toggle {
                display: flex;
            }

            .hero {
                min-height: auto;
                padding: 100px 0 60px;
            }
            .hero h1 {
                font-size: 34px;
            }
            .hero h1 .highlight-block {
                display: inline;
            }
            .hero p {
                font-size: 17px;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
                margin-top: 36px;
            }
            .hero-stat .num {
                font-size: 26px;
            }

            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .section-desc {
                font-size: 15px;
            }
            .section-header {
                margin-bottom: 32px;
            }

            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .feature-card {
                padding: 24px 16px;
            }
            .feature-icon {
                width: 52px;
                height: 52px;
                font-size: 22px;
            }
            .feature-card h3 {
                font-size: 17px;
            }

            .categories-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-card {
                min-height: 240px;
            }
            .category-card .cat-content {
                padding: 24px 20px;
            }
            .category-card h3 {
                font-size: 20px;
            }

            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .step-card {
                padding: 24px 16px;
            }

            .news-card {
                flex-direction: column;
            }
            .news-card .news-img {
                width: 100%;
                min-height: 180px;
            }

            .cta-section h2 {
                font-size: 28px;
            }
            .cta-section p {
                font-size: 16px;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .container-wide {
                padding: 0 16px;
            }

            .hero h1 {
                font-size: 28px;
            }
            .hero p {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }

            .section-title {
                font-size: 22px;
            }

            .features-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .categories-grid {
                grid-template-columns: 1fr;
            }

            .news-card .news-img {
                min-height: 140px;
            }

            .faq-question {
                padding: 16px 16px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 14px;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 16px;
            }

            .cta-section h2 {
                font-size: 24px;
            }
            .cta-actions {
                flex-direction: column;
            }
            .cta-actions .btn {
                width: 100%;
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

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

        /* ===== 选中文本 ===== */
        ::selection {
            background: rgba(0, 212, 255, 0.25);
            color: var(--text-primary);
        }

        /* ===== 渐入动画 ===== */
        .animate-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .animate-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 通用辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mt-48 {
            margin-top: 48px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
    :root {
        --primary: #6c5ce7;
        --primary-dark: #5a4bd1;
        --primary-light: #a29bfe;
        --primary-gradient: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
        --secondary: #fd79a8;
        --secondary-dark: #e84393;
        --accent: #00cec9;
        --accent-dark: #00b5b0;
        --bg-dark: #0a0a1a;
        --bg-card: #12122a;
        --bg-card-hover: #1a1a3a;
        --bg-section: #0f0f25;
        --bg-section-alt: #151530;
        --text-primary: #f0f0ff;
        --text-secondary: #b0b0d0;
        --text-muted: #7070a0;
        --border-color: rgba(108, 92, 231, 0.25);
        --border-glow: rgba(108, 92, 231, 0.4);
        --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
        --shadow-glow: 0 0 30px rgba(108, 92, 231, 0.2);
        --radius-sm: 8px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
        --container: 1200px;
        --container-wide: 1400px;
        --header-height: 72px;
    }

    /* ===== 基础 Reset ===== */
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    body {
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-primary);
        background: var(--bg-dark);
        min-height: 100vh;
        overflow-x: hidden;
    }
    a {
        color: var(--primary-light);
        text-decoration: none;
        transition: var(--transition);
    }
    a:hover {
        color: #fff;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
        border-radius: var(--radius-sm);
    }
    button,
    input,
    textarea {
        font-family: inherit;
        font-size: inherit;
        border: none;
        outline: none;
        background: none;
        color: inherit;
    }
    button {
        cursor: pointer;
    }
    ul,
    ol {
        list-style: none;
    }
    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        line-height: 1.3;
        font-weight: 700;
        color: var(--text-primary);
    }

    /* ===== 容器 ===== */
    .container {
        max-width: var(--container);
        margin: 0 auto;
        padding: 0 24px;
    }
    .container-wide {
        max-width: var(--container-wide);
        margin: 0 auto;
        padding: 0 24px;
    }
    .container-narrow {
        max-width: 860px;
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== 导航 ===== */
    .header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgba(10, 10, 26, 0.92);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border-color);
        height: var(--header-height);
        transition: var(--transition);
    }
    .header.scrolled {
        background: rgba(10, 10, 26, 0.98);
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
    }
    .header .container-wide {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 22px;
        font-weight: 800;
        color: #fff;
        text-decoration: none;
        letter-spacing: 0.5px;
    }
    .logo:hover {
        color: #fff;
    }
    .logo-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        border-radius: 10px;
        background: var(--primary-gradient);
        font-size: 20px;
        font-weight: 800;
        color: #fff;
        box-shadow: 0 0 20px rgba(108, 92, 231, 0.3);
    }
    .nav {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .nav a {
        padding: 8px 18px;
        border-radius: var(--radius-sm);
        font-size: 15px;
        font-weight: 500;
        color: var(--text-secondary);
        transition: var(--transition);
        position: relative;
    }
    .nav a:hover {
        color: #fff;
        background: rgba(108, 92, 231, 0.15);
    }
    .nav a.active {
        color: #fff;
        background: rgba(108, 92, 231, 0.2);
    }
    .nav a.active::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 50%;
        transform: translateX(-50%);
        width: 20px;
        height: 3px;
        border-radius: 2px;
        background: var(--primary-gradient);
    }
    .nav-cta {
        margin-left: 12px;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 28px;
        border-radius: var(--radius-sm);
        font-weight: 600;
        font-size: 15px;
        transition: var(--transition);
        border: none;
        cursor: pointer;
        text-decoration: none;
        line-height: 1.4;
    }
    .btn:focus-visible {
        outline: 2px solid var(--primary-light);
        outline-offset: 3px;
    }
    .btn-primary {
        background: var(--primary-gradient);
        color: #fff;
        box-shadow: 0 4px 20px rgba(108, 92, 231, 0.35);
    }
    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 30px rgba(108, 92, 231, 0.5);
        color: #fff;
    }
    .btn-primary:active {
        transform: translateY(0);
        box-shadow: 0 2px 12px rgba(108, 92, 231, 0.3);
    }
    .btn-secondary {
        background: rgba(108, 92, 231, 0.15);
        color: var(--primary-light);
        border: 1px solid var(--border-color);
    }
    .btn-secondary:hover {
        background: rgba(108, 92, 231, 0.25);
        color: #fff;
        border-color: var(--primary);
    }
    .btn-sm {
        padding: 8px 20px;
        font-size: 14px;
    }
    .btn-lg {
        padding: 16px 36px;
        font-size: 17px;
        border-radius: var(--radius-md);
    }
    .nav-toggle {
        display: none;
        font-size: 24px;
        color: var(--text-primary);
        padding: 6px 10px;
        border-radius: var(--radius-sm);
        background: rgba(108, 92, 231, 0.1);
        border: 1px solid var(--border-color);
        transition: var(--transition);
    }
    .nav-toggle:hover {
        background: rgba(108, 92, 231, 0.2);
    }

    /* ===== 页面标题区 ===== */
    .page-banner {
        padding: calc(var(--header-height) + 40px) 0 40px;
        background: var(--bg-section);
        border-bottom: 1px solid var(--border-color);
        position: relative;
        overflow: hidden;
    }
    .page-banner::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -20%;
        width: 500px;
        height: 500px;
        background: radial-gradient(circle, rgba(108, 92, 231, 0.12) 0%, transparent 70%);
        border-radius: 50%;
        pointer-events: none;
    }
    .page-banner .container-narrow {
        position: relative;
        z-index: 1;
    }
    .page-breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 14px;
        color: var(--text-muted);
        margin-bottom: 16px;
        flex-wrap: wrap;
    }
    .page-breadcrumb a {
        color: var(--text-muted);
    }
    .page-breadcrumb a:hover {
        color: var(--primary-light);
    }
    .page-breadcrumb .sep {
        color: var(--text-muted);
        font-size: 12px;
    }
    .page-breadcrumb .current {
        color: var(--text-secondary);
    }
    .page-title {
        font-size: 36px;
        font-weight: 800;
        color: #fff;
        line-height: 1.25;
        margin-bottom: 16px;
        letter-spacing: -0.5px;
    }
    .page-meta {
        display: flex;
        align-items: center;
        gap: 20px;
        flex-wrap: wrap;
        color: var(--text-muted);
        font-size: 14px;
    }
    .page-meta .meta-item {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .page-meta .meta-item i {
        font-size: 14px;
        color: var(--primary-light);
    }
    .page-meta .badge {
        display: inline-block;
        padding: 3px 14px;
        border-radius: 20px;
        font-size: 12px;
        font-weight: 600;
        background: rgba(108, 92, 231, 0.2);
        color: var(--primary-light);
        border: 1px solid rgba(108, 92, 231, 0.3);
    }

    /* ===== 文章主体 ===== */
    .article-main {
        padding: 50px 0 60px;
        background: var(--bg-dark);
    }
    .article-body {
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-color);
        padding: 40px 48px;
        box-shadow: var(--shadow-md);
    }
    .article-body .featured-image {
        width: 100%;
        border-radius: var(--radius-md);
        margin-bottom: 32px;
        aspect-ratio: 16/9;
        object-fit: cover;
        background: var(--bg-card-hover);
        box-shadow: var(--shadow-sm);
    }
    .article-body .content {
        font-size: 16px;
        line-height: 1.9;
        color: var(--text-secondary);
    }
    .article-body .content p {
        margin-bottom: 20px;
    }
    .article-body .content h2,
    .article-body .content h3 {
        color: #fff;
        margin-top: 36px;
        margin-bottom: 16px;
    }
    .article-body .content h2 {
        font-size: 24px;
    }
    .article-body .content h3 {
        font-size: 20px;
    }
    .article-body .content ul,
    .article-body .content ol {
        margin-bottom: 20px;
        padding-left: 24px;
    }
    .article-body .content li {
        margin-bottom: 8px;
        list-style: disc;
    }
    .article-body .content a {
        color: var(--accent);
        text-decoration: underline;
    }
    .article-body .content a:hover {
        color: #fff;
    }
    .article-body .content blockquote {
        border-left: 4px solid var(--primary);
        padding: 16px 24px;
        margin: 24px 0;
        background: rgba(108, 92, 231, 0.08);
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-secondary);
        font-style: italic;
    }
    .article-body .content img {
        border-radius: var(--radius-md);
        margin: 24px 0;
        box-shadow: var(--shadow-sm);
    }
    .article-body .content code {
        background: rgba(108, 92, 231, 0.15);
        padding: 2px 10px;
        border-radius: 4px;
        font-size: 14px;
        color: var(--primary-light);
    }
    .article-body .content pre {
        background: var(--bg-card-hover);
        border-radius: var(--radius-md);
        padding: 24px;
        overflow-x: auto;
        margin: 24px 0;
        border: 1px solid var(--border-color);
    }
    .article-body .content pre code {
        background: none;
        padding: 0;
        color: var(--text-secondary);
    }

    .article-not-found {
        text-align: center;
        padding: 80px 24px;
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-color);
    }
    .article-not-found .icon-big {
        font-size: 64px;
        color: var(--primary-light);
        margin-bottom: 24px;
        opacity: 0.6;
    }
    .article-not-found h2 {
        font-size: 28px;
        margin-bottom: 12px;
    }
    .article-not-found p {
        color: var(--text-muted);
        margin-bottom: 28px;
        font-size: 16px;
    }

    /* ===== 文章标签与分享 ===== */
    .article-footer-bar {
        margin-top: 36px;
        padding-top: 28px;
        border-top: 1px solid var(--border-color);
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 16px;
    }
    .article-tags {
        display: flex;
        align-items: center;
        gap: 8px;
        flex-wrap: wrap;
    }
    .article-tags .tag-label {
        color: var(--text-muted);
        font-size: 14px;
    }
    .article-tags .tag {
        display: inline-block;
        padding: 4px 16px;
        border-radius: 20px;
        font-size: 13px;
        font-weight: 500;
        background: rgba(108, 92, 231, 0.12);
        color: var(--primary-light);
        border: 1px solid rgba(108, 92, 231, 0.2);
        transition: var(--transition);
    }
    .article-tags .tag:hover {
        background: rgba(108, 92, 231, 0.25);
        color: #fff;
    }
    .article-share {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .article-share .share-label {
        color: var(--text-muted);
        font-size: 14px;
    }
    .article-share a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: rgba(108, 92, 231, 0.1);
        color: var(--text-secondary);
        border: 1px solid var(--border-color);
        transition: var(--transition);
        font-size: 16px;
    }
    .article-share a:hover {
        background: var(--primary-gradient);
        color: #fff;
        border-color: transparent;
        transform: translateY(-2px);
    }

    /* ===== 相关文章 ===== */
    .related-section {
        padding: 50px 0;
        background: var(--bg-section);
        border-top: 1px solid var(--border-color);
    }
    .related-section .section-title {
        font-size: 26px;
        font-weight: 700;
        margin-bottom: 32px;
        color: #fff;
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .related-section .section-title i {
        color: var(--primary-light);
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .related-card {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        border: 1px solid var(--border-color);
        overflow: hidden;
        transition: var(--transition);
    }
    .related-card:hover {
        transform: translateY(-4px);
        border-color: var(--border-glow);
        box-shadow: var(--shadow-glow);
    }
    .related-card .card-img {
        width: 100%;
        aspect-ratio: 16/9;
        object-fit: cover;
        background: var(--bg-card-hover);
    }
    .related-card .card-body {
        padding: 18px 20px 20px;
    }
    .related-card .card-cat {
        font-size: 12px;
        color: var(--primary-light);
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        margin-bottom: 6px;
    }
    .related-card .card-title {
        font-size: 16px;
        font-weight: 600;
        color: #fff;
        line-height: 1.4;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        transition: var(--transition);
    }
    .related-card:hover .card-title {
        color: var(--primary-light);
    }
    .related-card .card-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-top: 10px;
        font-size: 13px;
        color: var(--text-muted);
    }

    /* ===== CTA ===== */
    .cta-section {
        padding: 60px 0;
        background: var(--bg-section-alt);
        border-top: 1px solid var(--border-color);
    }
    .cta-box {
        background: var(--bg-card);
        border-radius: var(--radius-xl);
        border: 1px solid var(--border-color);
        padding: 50px 48px;
        text-align: center;
        position: relative;
        overflow: hidden;
        box-shadow: var(--shadow-md);
    }
    .cta-box::before {
        content: '';
        position: absolute;
        top: -40%;
        right: -10%;
        width: 400px;
        height: 400px;
        background: radial-gradient(circle, rgba(108, 92, 231, 0.1) 0%, transparent 70%);
        border-radius: 50%;
        pointer-events: none;
    }
    .cta-box h3 {
        font-size: 28px;
        font-weight: 700;
        margin-bottom: 12px;
        color: #fff;
    }
    .cta-box p {
        color: var(--text-secondary);
        font-size: 16px;
        max-width: 560px;
        margin: 0 auto 28px;
    }
    .cta-box .btn-group {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 16px;
        flex-wrap: wrap;
    }

    /* ===== 页脚 ===== */
    .footer {
        background: var(--bg-section);
        border-top: 1px solid var(--border-color);
        padding: 50px 0 0;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.8fr 1fr 1fr 1fr;
        gap: 36px;
        padding-bottom: 36px;
        border-bottom: 1px solid var(--border-color);
    }
    .footer-brand .logo {
        margin-bottom: 16px;
    }
    .footer-brand p {
        color: var(--text-muted);
        font-size: 14px;
        line-height: 1.8;
        max-width: 340px;
    }
    .footer h4 {
        font-size: 16px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 18px;
        letter-spacing: 0.3px;
    }
    .footer-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .footer-links a {
        font-size: 14px;
        color: var(--text-muted);
        transition: var(--transition);
    }
    .footer-links a:hover {
        color: var(--primary-light);
        padding-left: 4px;
    }
    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 22px 0;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 14px;
        color: var(--text-muted);
    }
    .footer-bottom a {
        color: var(--text-muted);
    }
    .footer-bottom a:hover {
        color: var(--primary-light);
    }
    .footer-social {
        display: flex;
        gap: 10px;
    }
    .footer-social a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        border-radius: 50%;
        background: rgba(108, 92, 231, 0.1);
        color: var(--text-secondary);
        border: 1px solid var(--border-color);
        transition: var(--transition);
        font-size: 17px;
    }
    .footer-social a:hover {
        background: var(--primary-gradient);
        color: #fff;
        border-color: transparent;
        transform: translateY(-2px);
    }

    /* ===== 回到顶部 ===== */
    .back-to-top {
        position: fixed;
        bottom: 30px;
        right: 30px;
        width: 48px;
        height: 48px;
        border-radius: 50%;
        background: var(--primary-gradient);
        color: #fff;
        border: none;
        box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
        font-size: 20px;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: var(--transition);
        opacity: 0;
        visibility: hidden;
        transform: translateY(20px);
        z-index: 999;
    }
    .back-to-top.visible {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    .back-to-top:hover {
        transform: translateY(-4px);
        box-shadow: 0 8px 30px rgba(108, 92, 231, 0.6);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .related-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .page-title {
            font-size: 30px;
        }
        .article-body {
            padding: 32px 28px;
        }
    }

    @media (max-width: 768px) {
        .nav {
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(10, 10, 26, 0.98);
            backdrop-filter: blur(20px);
            flex-direction: column;
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-lg);
            transform: translateY(-120%);
            opacity: 0;
            transition: var(--transition);
            pointer-events: none;
            gap: 4px;
        }
        .nav.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .nav a {
            width: 100%;
            padding: 14px 18px;
            font-size: 16px;
            border-radius: var(--radius-sm);
        }
        .nav a.active::after {
            display: none;
        }
        .nav .nav-cta {
            margin-left: 0;
            width: 100%;
            margin-top: 8px;
        }
        .nav .nav-cta .btn {
            width: 100%;
            justify-content: center;
        }
        .nav-toggle {
            display: block;
        }
        .page-title {
            font-size: 24px;
        }
        .page-banner {
            padding: calc(var(--header-height) + 24px) 0 28px;
        }
        .article-body {
            padding: 24px 18px;
            border-radius: var(--radius-md);
        }
        .article-body .featured-image {
            margin-bottom: 20px;
        }
        .article-footer-bar {
            flex-direction: column;
            align-items: flex-start;
        }
        .related-grid {
            grid-template-columns: 1fr;
        }
        .cta-box {
            padding: 36px 24px;
        }
        .cta-box h3 {
            font-size: 22px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
        .back-to-top {
            bottom: 20px;
            right: 20px;
            width: 42px;
            height: 42px;
            font-size: 18px;
        }
        .page-meta {
            gap: 12px;
        }
    }

    @media (max-width: 520px) {
        .container,
        .container-wide,
        .container-narrow {
            padding: 0 16px;
        }
        .page-title {
            font-size: 20px;
        }
        .article-body {
            padding: 18px 14px;
        }
        .article-body .content {
            font-size: 15px;
        }
        .logo {
            font-size: 18px;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            font-size: 16px;
        }
        .cta-box {
            padding: 28px 18px;
        }
        .cta-box h3 {
            font-size: 20px;
        }
        .related-section .section-title {
            font-size: 20px;
        }
    }

/* roulang page: category1 */
/* ===== Design Variable System ===== */
        :root {
            --primary: #7c3aed;
            --primary-light: #a78bfa;
            --primary-dark: #5b21b6;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #06b6d4;
            --accent-light: #22d3ee;
            --bg-dark: #0f0e17;
            --bg-card: #1a1a2e;
            --bg-card-hover: #242442;
            --bg-section: #14142a;
            --bg-section-alt: #1a1a32;
            --text-white: #f1f5f9;
            --text-light: #c4b5fd;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --border-color: #2d2d5e;
            --border-glow: rgba(124, 58, 237, 0.3);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(124, 58, 237, 0.08);
            --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-max: 1240px;
            --header-h: 72px;
        }

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

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1360px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: rgba(15, 14, 23, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
        }
        .header .container-wide {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
            transition: opacity var(--transition);
        }
        .logo:hover {
            opacity: 0.85;
            color: var(--text-white);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
            font-weight: 900;
            color: #fff;
            box-shadow: 0 0 20px rgba(124, 58, 237, 0.35);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all var(--transition);
            position: relative;
        }
        .nav a:hover {
            color: var(--text-white);
            background: rgba(124, 58, 237, 0.12);
        }
        .nav a.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 4px 16px rgba(124, 58, 237, 0.35);
        }
        .nav-cta {
            margin-left: 12px;
        }
        .nav-cta .btn {
            padding: 8px 22px;
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: 100px;
            background: linear-gradient(135deg, var(--secondary), #d97706);
            color: #0f0e17;
            border: none;
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .nav-cta .btn:hover {
            transform: translateY(-2px) scale(1.03);
            box-shadow: 0 8px 32px rgba(245, 158, 11, 0.45);
            color: #0f0e17;
        }
        .nav-cta .btn i {
            font-size: 0.9rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(124, 58, 237, 0.15);
        }

        /* ===== Page Hero / Banner ===== */
        .page-hero {
            padding: 120px 0 72px;
            background: linear-gradient(160deg, #0f0e17 0%, #1a0a2e 60%, #0f0e17 100%);
            position: relative;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.15), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 18px;
            background: linear-gradient(135deg, #f1f5f9, #a78bfa, #22d3ee);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .page-hero .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-dim);
            margin-bottom: 20px;
        }
        .page-hero .breadcrumb a {
            color: var(--primary-light);
        }
        .page-hero .breadcrumb a:hover {
            color: var(--secondary);
        }
        .page-hero .breadcrumb span {
            color: var(--text-muted);
        }
        .page-hero .badge-group {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 12px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(124, 58, 237, 0.15);
            border: 1px solid rgba(124, 58, 237, 0.25);
            color: var(--text-light);
            backdrop-filter: blur(4px);
        }
        .badge i {
            color: var(--secondary);
            font-size: 0.7rem;
        }
        .badge-hot {
            background: rgba(245, 158, 11, 0.18);
            border-color: rgba(245, 158, 11, 0.3);
            color: var(--secondary-light);
        }
        .badge-new {
            background: rgba(6, 182, 212, 0.15);
            border-color: rgba(6, 182, 212, 0.25);
            color: var(--accent-light);
        }

        /* ===== Section Shared ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            background: linear-gradient(135deg, #f1f5f9, #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-header p {
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 28px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-8px);
            border-color: var(--border-glow);
            box-shadow: 0 16px 48px rgba(124, 58, 237, 0.2), 0 0 0 1px rgba(124, 58, 237, 0.15);
        }
        .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: #1a1a2e;
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card:hover .card-img img {
            transform: scale(1.06);
        }
        .card-img .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 700;
            background: rgba(124, 58, 237, 0.8);
            backdrop-filter: blur(4px);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .card-img .card-tag.hot {
            background: rgba(245, 158, 11, 0.85);
        }
        .card-img .card-tag.new {
            background: rgba(6, 182, 212, 0.85);
        }
        .card-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-white);
            line-height: 1.4;
        }
        .card-body h3 a {
            color: var(--text-white);
        }
        .card-body h3 a:hover {
            color: var(--primary-light);
        }
        .card-body p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid rgba(45, 45, 94, 0.5);
            font-size: 0.82rem;
            color: var(--text-dim);
        }
        .card-meta .meta-left {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .card-meta i {
            margin-right: 4px;
            color: var(--primary-light);
        }
        .card-meta .rating {
            color: var(--secondary);
        }
        .card-meta .btn-text {
            color: var(--primary-light);
            font-weight: 600;
            font-size: 0.82rem;
            transition: color var(--transition);
        }
        .card-meta .btn-text:hover {
            color: var(--secondary);
        }

        /* ===== Featured / Large Card ===== */
        .featured-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            margin-bottom: 40px;
            transition: all var(--transition);
        }
        .featured-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 16px 48px rgba(124, 58, 237, 0.18);
        }
        .featured-card .fc-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: #1a1a2e;
        }
        .featured-card .fc-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .featured-card:hover .fc-img img {
            transform: scale(1.05);
        }
        .featured-card .fc-body {
            padding: 36px 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-card .fc-body .fc-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 700;
            background: rgba(245, 158, 11, 0.2);
            color: var(--secondary-light);
            border: 1px solid rgba(245, 158, 11, 0.2);
            margin-bottom: 14px;
            width: fit-content;
        }
        .featured-card .fc-body h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 14px;
            color: var(--text-white);
        }
        .featured-card .fc-body p {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .featured-card .fc-body .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.9rem;
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary-light);
            transition: all var(--transition);
            width: fit-content;
        }
        .featured-card .fc-body .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 20px rgba(124, 58, 237, 0.3);
        }

        /* ===== Category Filter ===== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-bottom: 44px;
        }
        .filter-bar .filter-btn {
            padding: 8px 24px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            background: transparent;
            border: 1.5px solid var(--border-color);
            color: var(--text-muted);
            cursor: pointer;
            transition: all var(--transition);
        }
        .filter-bar .filter-btn:hover {
            border-color: var(--primary);
            color: var(--text-white);
            background: rgba(124, 58, 237, 0.08);
        }
        .filter-bar .filter-btn.active {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-color: transparent;
            color: #fff;
            box-shadow: 0 4px 16px rgba(124, 58, 237, 0.3);
        }

        /* ===== Stats / Data Row ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }
        .stat-item {
            text-align: center;
            padding: 24px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .stat-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ===== Tips / List ===== */
        .tips-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }
        .tip-item {
            display: flex;
            gap: 16px;
            padding: 18px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            align-items: flex-start;
        }
        .tip-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .tip-item .tip-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(124, 58, 237, 0.15);
            color: var(--primary-light);
            font-size: 1.1rem;
        }
        .tip-item .tip-content h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-white);
        }
        .tip-item .tip-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            transition: background var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            background: rgba(124, 58, 237, 0.06);
        }
        .faq-question i {
            color: var(--primary-light);
            font-size: 0.9rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(160deg, #1a0a2e, #0f0e17);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center/cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 72px 24px;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 900;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #f1f5f9, #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .cta-section p {
            color: var(--text-muted);
            font-size: 1.1rem;
            max-width: 540px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-group {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .cta-section .btn-primary {
            padding: 14px 40px;
            border-radius: 100px;
            font-weight: 700;
            font-size: 1rem;
            background: linear-gradient(135deg, var(--secondary), #d97706);
            color: #0f0e17;
            border: none;
            box-shadow: 0 4px 24px rgba(245, 158, 11, 0.3);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .btn-primary:hover {
            transform: translateY(-3px) scale(1.03);
            box-shadow: 0 10px 40px rgba(245, 158, 11, 0.45);
            color: #0f0e17;
        }
        .cta-section .btn-outline-light {
            padding: 14px 36px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 1rem;
            background: transparent;
            border: 1.5px solid var(--text-muted);
            color: var(--text-light);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .btn-outline-light:hover {
            border-color: var(--primary-light);
            color: var(--text-white);
            background: rgba(124, 58, 237, 0.08);
        }

        /* ===== Footer ===== */
        .footer {
            background: #0a0a12;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            color: var(--text-dim);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--text-dim);
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
            font-size: 0.85rem;
            color: var(--text-dim);
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom a {
            color: var(--text-dim);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        .footer-social {
            display: flex;
            gap: 16px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(124, 58, 237, 0.08);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .footer-social a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .page-hero h1 {
                font-size: 2.6rem;
            }
            .featured-card {
                grid-template-columns: 1fr;
            }
            .featured-card .fc-img {
                aspect-ratio: 16/7;
            }
            .featured-card .fc-body {
                padding: 28px 32px;
            }
            .featured-card .fc-body h3 {
                font-size: 1.3rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 64px;
            }
            .nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: rgba(15, 14, 23, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 28px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                gap: 6px;
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav a {
                padding: 12px 20px;
                font-size: 1rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 10px;
                width: 100%;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
            }
            .nav-toggle {
                display: block;
            }
            .page-hero {
                padding: 100px 0 52px;
                min-height: 300px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
            .tips-list {
                grid-template-columns: 1fr;
            }
            .filter-bar .filter-btn {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .featured-card .fc-body {
                padding: 22px 24px;
            }
            .featured-card .fc-body h3 {
                font-size: 1.15rem;
            }
            .cta-section .container {
                padding: 48px 24px;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 12px;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero .badge-group {
                gap: 8px;
            }
            .badge {
                font-size: 0.7rem;
                padding: 4px 12px;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .card-body {
                padding: 16px 18px 20px;
            }
            .card-body h3 {
                font-size: 1.05rem;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 16px 12px;
            }
            .stat-item .stat-number {
                font-size: 1.5rem;
            }
            .featured-card .fc-body {
                padding: 18px 18px 22px;
            }
            .featured-card .fc-body h3 {
                font-size: 1rem;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-section .btn-primary,
            .cta-section .btn-outline-light {
                padding: 12px 28px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }
            .footer {
                padding: 40px 0 24px;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 3px;
        }
        .btn:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .anim-fade-up {
            animation: fadeUp 0.6s ease forwards;
        }
        .anim-delay-1 {
            animation-delay: 0.1s;
        }
        .anim-delay-2 {
            animation-delay: 0.2s;
        }
        .anim-delay-3 {
            animation-delay: 0.3s;
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --secondary: #fd79a8;
            --secondary-dark: #e84393;
            --accent: #00cec9;
            --accent-dark: #00b894;
            --bg-dark: #0a0a1a;
            --bg-card: #12122a;
            --bg-section: #0f0f25;
            --bg-light: #1a1a3e;
            --text: #f0f0ff;
            --text-muted: #9a9ac0;
            --text-soft: #b8b8e0;
            --border: #2a2a5a;
            --border-light: #3a3a6a;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(108, 92, 231, 0.18);
            --shadow-lg: 0 16px 56px rgba(108, 92, 231, 0.28);
            --shadow-glow: 0 0 40px rgba(108, 92, 231, 0.12);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-h: 76px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg-dark);
            min-height: 100vh;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        p {
            color: var(--text-soft);
            margin-bottom: 0.75rem;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 28px;
        }
        .section {
            padding: 80px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--primary-light);
            background: rgba(108, 92, 231, 0.12);
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 16px;
            border: 1px solid rgba(108, 92, 231, 0.2);
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--text), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 40px;
            line-height: 1.7;
        }
        .text-center {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }
        .grid-2,
        .grid-3,
        .grid-4 {
            display: grid;
            gap: 28px;
        }
        .grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all var(--transition);
            cursor: pointer;
            border: 2px solid transparent;
            background: transparent;
            color: var(--text);
            text-decoration: none;
        }
        .btn:hover,
        .btn:focus-visible {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            text-decoration: none;
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover,
        .btn-primary:focus-visible {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            border-color: var(--primary-light);
            color: #fff;
            box-shadow: 0 8px 32px rgba(108, 92, 231, 0.35);
        }
        .btn-secondary {
            background: transparent;
            color: var(--text);
            border-color: var(--border-light);
        }
        .btn-secondary:hover,
        .btn-secondary:focus-visible {
            border-color: var(--primary-light);
            color: var(--primary-light);
            background: rgba(108, 92, 231, 0.08);
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #0a0a1a;
            border-color: var(--accent);
        }
        .btn-accent:hover {
            background: linear-gradient(135deg, var(--accent-dark), var(--accent));
            color: #0a0a1a;
            box-shadow: 0 8px 32px rgba(0, 206, 201, 0.3);
        }
        .btn-sm {
            padding: 10px 22px;
            font-size: 0.9rem;
        }
        .btn-lg {
            padding: 18px 44px;
            font-size: 1.1rem;
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 10, 26, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(42, 42, 90, 0.5);
            height: var(--header-h);
            transition: background var(--transition);
        }
        .header .container-wide {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text);
            text-decoration: none;
            transition: opacity var(--transition);
        }
        .logo:hover {
            opacity: 0.88;
            color: var(--text);
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-size: 1.5rem;
            font-weight: 800;
            flex-shrink: 0;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.3);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-soft);
            transition: all var(--transition);
            position: relative;
            text-decoration: none;
        }
        .nav a:hover {
            color: var(--text);
            background: rgba(108, 92, 231, 0.08);
        }
        .nav a.active {
            color: #fff;
            background: rgba(108, 92, 231, 0.18);
            box-shadow: inset 0 0 0 1px rgba(108, 92, 231, 0.25);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--primary-light);
        }
        .nav-cta {
            margin-left: 12px;
        }
        .nav-cta .btn {
            padding: 8px 20px;
            font-size: 0.88rem;
            border-radius: 50px;
        }
        .nav-toggle {
            display: none;
            background: none;
            color: var(--text);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(108, 92, 231, 0.1);
        }

        /* ===== Hero / Banner ===== */
        .hero {
            position: relative;
            padding: 140px 0 100px;
            min-height: 520px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.18;
            pointer-events: none;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(108, 92, 231, 0.15) 0%, transparent 70%),
                radial-gradient(ellipse at 80% 60%, rgba(0, 206, 201, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #fff, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(108, 92, 231, 0.15);
            border: 1px solid rgba(108, 92, 231, 0.25);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--primary-light);
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            font-size: 1rem;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid rgba(42, 42, 90, 0.5);
        }
        .hero-stat h3 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            -webkit-text-fill-color: var(--accent);
        }
        .hero-stat p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 32px 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-glow);
        }
        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        }
        .card-icon.accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
        }
        .card-icon.secondary {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
        }
        .card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            padding: 3px 12px;
            border-radius: 50px;
            background: rgba(108, 92, 231, 0.12);
            color: var(--primary-light);
            border: 1px solid rgba(108, 92, 231, 0.15);
            margin-bottom: 14px;
        }

        /* ===== Feature / Content Cards with Image ===== */
        .feature-card {
            display: flex;
            flex-direction: column;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-glow);
        }
        .feature-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            flex-shrink: 0;
        }
        .feature-card .card-body {
            padding: 24px 24px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .feature-card .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .feature-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 16px;
        }
        .feature-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 14px;
            margin-top: auto;
        }
        .feature-card .card-meta a {
            color: var(--primary-light);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .feature-card .card-meta a:hover {
            color: var(--accent);
        }

        /* ===== Steps / Timeline ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 28px;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 32px 28px;
            position: relative;
            transition: all var(--transition);
            counter-increment: step;
        }
        .step-item:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .step-item::before {
            content: counter(step);
            position: absolute;
            top: 24px;
            right: 24px;
            font-size: 2.8rem;
            font-weight: 900;
            color: rgba(108, 92, 231, 0.12);
            line-height: 1;
            transition: color var(--transition);
        }
        .step-item:hover::before {
            color: rgba(108, 92, 231, 0.25);
        }
        .step-item .step-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            margin-bottom: 18px;
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== Stats / Data ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
        }
        .stat-item:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .stat-item .stat-num {
            font-size: 2.8rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            background: none;
            color: var(--text);
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            transition: background var(--transition);
            border: none;
        }
        .faq-question:hover {
            background: rgba(108, 92, 231, 0.04);
        }
        .faq-question i {
            font-size: 1.2rem;
            color: var(--primary-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-answer p {
            margin-bottom: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-item.open .faq-answer {
            max-height: 240px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.10), rgba(0, 206, 201, 0.06));
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-box {
            text-align: center;
            padding: 40px 20px;
        }
        .cta-box h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-box p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 540px;
            margin: 0 auto 32px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border);
            padding: 60px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.2rem;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 360px;
            line-height: 1.7;
        }
        .footer h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text);
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color var(--transition);
            text-decoration: none;
        }
        .footer-links a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(108, 92, 231, 0.08);
            color: var(--text-soft);
            font-size: 1.1rem;
            transition: all var(--transition);
            border: 1px solid transparent;
            text-decoration: none;
        }
        .footer-social a:hover {
            background: rgba(108, 92, 231, 0.18);
            border-color: rgba(108, 92, 231, 0.3);
            color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero h1 {
                font-size: 2.6rem;
            }
            .section-title {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .nav {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(10, 10, 26, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
            }
            .nav.open {
                display: flex;
            }
            .nav a {
                padding: 12px 18px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav a.active::after {
                display: none;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                width: 100%;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .nav-toggle {
                display: block;
            }
            .hero {
                padding: 120px 0 70px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat h3 {
                font-size: 1.6rem;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-num {
                font-size: 2rem;
            }
            .section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-box h2 {
                font-size: 1.8rem;
            }
            .steps {
                grid-template-columns: 1fr;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 16px 18px;
            }
        }
        @media (max-width: 520px) {
            .container,
            .container-wide {
                padding: 0 16px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 16px;
            }
            .stat-item .stat-num {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .card {
                padding: 24px 20px;
            }
            .feature-card .card-img {
                height: 160px;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 1rem;
            }
            .footer-grid {
                gap: 24px;
            }
        }

        /* ===== Utility ===== */
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }
        .gap-16 {
            gap: 16px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(108, 92, 231, 0.12);
            color: var(--primary-light);
            border: 1px solid rgba(108, 92, 231, 0.15);
        }
        .badge-success {
            background: rgba(0, 206, 201, 0.12);
            color: var(--accent);
            border-color: rgba(0, 206, 201, 0.2);
        }
        .badge-warning {
            background: rgba(253, 121, 168, 0.12);
            color: var(--secondary);
            border-color: rgba(253, 121, 168, 0.2);
        }