/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #dc2626;
            --color-primary-dark: #b91c1c;
            --color-primary-light: #fef2f2;
            --color-secondary: #1e293b;
            --color-secondary-light: #334155;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-bg: #f8fafc;
            --color-bg-alt: #f1f5f9;
            --color-bg-dark: #0f172a;
            --color-text: #1e293b;
            --color-text-light: #64748b;
            --color-text-inverse: #ffffff;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-error: #ef4444;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12), 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.16), 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-glow: 0 0 30px rgba(220, 38, 38, 0.25);
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 40px;
            --spacing-2xl: 64px;
            --spacing-3xl: 96px;
            --max-width: 1200px;
            --header-height: 72px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 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(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 4px;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-text);
        }

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

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

        /* ===== Section ===== */
        .section {
            padding: var(--spacing-2xl) 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-inverse);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: var(--color-text-inverse);
        }

        .section-title {
            font-size: 2rem;
            text-align: center;
            margin-bottom: var(--spacing-sm);
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-light);
            text-align: center;
            max-width: 640px;
            margin: 0 auto var(--spacing-2xl);
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-xl) 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: var(--spacing-xl);
            }
        }

        /* ===== Grid ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: var(--spacing-xl);
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
        }

        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
        }

        /* ===== Header & Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            transition: box-shadow var(--transition);
        }
        .header.scrolled {
            box-shadow: var(--shadow-md);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--color-primary);
        }
        .logo:hover {
            color: var(--color-primary-dark);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-xl);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-light);
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: var(--radius-sm);
            position: relative;
            transition: color var(--transition);
        }
        .nav-links a:hover {
            color: var(--color-primary);
        }
        .nav-links a.active {
            color: var(--color-primary);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: 10px 24px;
            background: var(--color-primary);
            color: var(--color-text-inverse);
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: var(--radius-md);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 4px 14px rgba(220, 38, 38, 0.35);
        }
        .nav-cta i {
            font-size: 1rem;
        }
        .nav-cta:hover {
            background: var(--color-primary-dark);
            color: var(--color-text-inverse);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(220, 38, 38, 0.4);
        }

        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: var(--spacing-sm);
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--color-bg-alt);
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: var(--spacing-lg);
                gap: var(--spacing-md);
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                background: var(--color-primary-light);
                padding: var(--spacing-sm) var(--spacing-md);
                border-radius: var(--radius-md);
            }
            .nav-cta {
                padding: 8px 18px;
                font-size: 0.85rem;
            }
            .nav-toggle {
                display: block;
            }
            .logo {
                font-size: 1.1rem;
            }
        }

        /* ===== Hero ===== */
        .hero {
            padding: calc(var(--header-height) + var(--spacing-2xl)) 0 var(--spacing-2xl);
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
            position: relative;
            overflow: hidden;
            min-height: 70vh;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(220, 38, 38, 0.15) 0%, transparent 70%);
        }

        .hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: 6px 18px;
            background: rgba(220, 38, 38, 0.2);
            color: #fca5a5;
            font-size: 0.85rem;
            font-weight: 500;
            border-radius: 100px;
            border: 1px solid rgba(220, 38, 38, 0.3);
            margin-bottom: var(--spacing-lg);
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            font-size: 0.8rem;
        }

        .hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: var(--color-text-inverse);
            letter-spacing: -0.03em;
            line-height: 1.15;
            margin-bottom: var(--spacing-md);
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }
        .hero h1 span {
            color: #fca5a5;
            background: linear-gradient(135deg, #fca5a5, #ef4444);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto var(--spacing-xl);
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: 14px 36px;
            background: var(--color-primary);
            color: var(--color-text-inverse);
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 6px 24px rgba(220, 38, 38, 0.4);
        }
        .btn-primary i {
            font-size: 1.1rem;
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            color: var(--color-text-inverse);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(220, 38, 38, 0.5);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: 14px 36px;
            background: rgba(255, 255, 255, 0.1);
            color: var(--color-text-inverse);
            font-weight: 600;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
            border: 2px solid rgba(255, 255, 255, 0.2);
            transition: background var(--transition), border-color var(--transition), transform var(--transition);
        }
        .btn-secondary i {
            font-size: 1.1rem;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(255, 255, 255, 0.35);
            color: var(--color-text-inverse);
            transform: translateY(-3px);
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: var(--spacing-2xl);
            margin-top: var(--spacing-2xl);
            padding-top: var(--spacing-xl);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-text-inverse);
            display: block;
            line-height: 1.2;
        }
        .hero-stat .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: var(--spacing-xs);
        }

        @media (max-width: 768px) {
            .hero {
                min-height: auto;
                padding: calc(var(--header-height) + var(--spacing-xl)) 0 var(--spacing-xl);
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: var(--spacing-lg);
                flex-wrap: wrap;
            }
            .hero-stat .num {
                font-size: 1.4rem;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
        }

        /* ===== Features / 优势 ===== */
        .feature-card {
            background: var(--color-text-inverse);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: transform var(--transition), box-shadow var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .feature-card .icon {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-md);
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin: 0 auto var(--spacing-md);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            margin-bottom: var(--spacing-sm);
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }

        /* ===== Category / 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--spacing-lg);
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--color-text-inverse);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: transform var(--transition), box-shadow var(--transition);
            display: block;
            color: var(--color-text);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            color: var(--color-text);
        }
        .category-card .thumb {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .category-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover .thumb img {
            transform: scale(1.06);
        }
        .category-card .info {
            padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
        }
        .category-card .info h3 {
            font-size: 1.1rem;
            margin-bottom: var(--spacing-xs);
        }
        .category-card .info p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
        }
        .category-card .tag {
            display: inline-block;
            padding: 2px 12px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 100px;
            margin-top: var(--spacing-sm);
        }

        /* ===== CMS 资讯列表 ===== */
        .post-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
        }
        .post-card {
            display: flex;
            gap: var(--spacing-md);
            background: var(--color-text-inverse);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .post-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .post-card .thumb {
            width: 160px;
            min-height: 100px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }
        .post-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .post-card .body {
            flex: 1;
            min-width: 0;
        }
        .post-card .body .meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 0.8rem;
            color: var(--color-text-light);
            margin-bottom: var(--spacing-xs);
        }
        .post-card .body .meta .cat {
            padding: 1px 10px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.75rem;
        }
        .post-card .body h4 {
            font-size: 1rem;
            margin-bottom: var(--spacing-xs);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card .body h4 a {
            color: var(--color-text);
        }
        .post-card .body h4 a:hover {
            color: var(--color-primary);
        }
        .post-card .body p {
            font-size: 0.88rem;
            color: var(--color-text-light);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card .body .time {
            font-size: 0.78rem;
            color: var(--color-text-light);
            margin-top: var(--spacing-xs);
        }

        .empty-tip {
            text-align: center;
            padding: var(--spacing-2xl) 0;
            color: var(--color-text-light);
            font-size: 1.05rem;
            grid-column: 1 / -1;
        }
        .empty-tip i {
            font-size: 2.5rem;
            display: block;
            margin-bottom: var(--spacing-md);
            color: var(--color-border);
        }

        @media (max-width: 768px) {
            .post-list {
                grid-template-columns: 1fr;
            }
            .post-card {
                flex-direction: column;
            }
            .post-card .thumb {
                width: 100%;
                aspect-ratio: 16/9;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-xl);
            text-align: center;
        }
        .stat-item .num {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--color-primary);
            line-height: 1.2;
            display: block;
        }
        .stat-item .num span {
            font-size: 1.8rem;
        }
        .stat-item .label {
            font-size: 0.95rem;
            color: var(--color-text-light);
            margin-top: var(--spacing-xs);
        }
        .section-dark .stat-item .num {
            color: #fca5a5;
        }
        .section-dark .stat-item .label {
            color: rgba(255, 255, 255, 0.65);
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-lg);
            }
            .stat-item .num {
                font-size: 2rem;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-xl);
            position: relative;
        }
        .steps::before {
            content: '';
            position: absolute;
            top: 48px;
            left: 15%;
            right: 15%;
            height: 3px;
            background: linear-gradient(to right, var(--color-primary), var(--color-accent));
            border-radius: 2px;
            opacity: 0.4;
        }
        .step {
            text-align: center;
            position: relative;
        }
        .step .num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-text-inverse);
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-md);
            position: relative;
            z-index: 2;
            box-shadow: 0 0 0 4px var(--color-text-inverse), 0 0 0 6px var(--color-primary);
        }
        .step h3 {
            font-size: 1.1rem;
            margin-bottom: var(--spacing-xs);
        }
        .step p {
            font-size: 0.92rem;
            color: var(--color-text-light);
        }

        @media (max-width: 768px) {
            .steps {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .steps::before {
                display: none;
            }
            .step .num {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .faq-item {
            background: var(--color-text-inverse);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-md) var(--spacing-lg);
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            background: none;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--color-bg-alt);
        }
        .faq-question i {
            font-size: 0.9rem;
            color: var(--color-text-light);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 var(--spacing-lg);
        }
        .faq-answer p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.8;
            padding-bottom: var(--spacing-md);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--color-primary) 0%, #991b1b 100%);
            border-radius: var(--radius-xl);
            padding: var(--spacing-2xl) var(--spacing-xl);
            text-align: center;
            color: var(--color-text-inverse);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-box .container {
            position: relative;
            z-index: 2;
        }
        .cta-box h2 {
            font-size: 2rem;
            color: var(--color-text-inverse);
            margin-bottom: var(--spacing-sm);
        }
        .cta-box p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 560px;
            margin: 0 auto var(--spacing-lg);
        }
        .cta-box .btn-primary {
            background: var(--color-text-inverse);
            color: var(--color-primary);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
        }
        .cta-box .btn-primary:hover {
            background: #f1f5f9;
            color: var(--color-primary-dark);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.3);
        }

        @media (max-width: 768px) {
            .cta-box {
                padding: var(--spacing-xl) var(--spacing-md);
            }
            .cta-box h2 {
                font-size: 1.4rem;
            }
            .cta-box p {
                font-size: 0.95rem;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }
        .footer-brand .logo {
            color: var(--color-text-inverse);
            margin-bottom: var(--spacing-sm);
        }
        .footer-brand .logo i {
            color: #fca5a5;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 1rem;
            color: var(--color-text-inverse);
            margin-bottom: var(--spacing-md);
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            padding: var(--spacing-xs) 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--color-text-inverse);
        }

        .footer-bottom {
            padding-top: var(--spacing-lg);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            font-size: 0.85rem;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: var(--color-text-inverse);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 实用工具 ===== */
        .text-center {
            text-align: center;
        }
        .mt-lg {
            margin-top: var(--spacing-lg);
        }
        .mt-xl {
            margin-top: var(--spacing-xl);
        }
        .gap-sm {
            gap: var(--spacing-sm);
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c3cf0;
            --primary-dark: #5228c9;
            --primary-light: #8b6cf7;
            --primary-gradient: linear-gradient(135deg, #6c3cf0 0%, #3b82f6 100%);
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --accent: #10b981;
            --bg-dark: #0f0a1e;
            --bg-dark-alt: #1a1230;
            --bg-card: #1e1640;
            --bg-body: #0b0718;
            --text-light: #f1f0ff;
            --text-muted: #a89fc8;
            --text-dim: #6b6190;
            --border-color: #2d2250;
            --border-light: #3d2d6a;
            --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 30px rgba(0,0,0,0.4);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 40px rgba(108,60,240,0.25);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: #fff; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: #fff; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(11, 7, 24, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .header .container {
            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;
            letter-spacing: -0.5px;
            transition: var(--transition);
        }
        .logo i {
            font-size: 28px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover { opacity: 0.85; color: #fff; }
        .nav {
            display: flex;
            align-items: center;
            gap: 30px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: #fff; background: rgba(108,60,240,0.15); }
        .nav-links a.active {
            color: #fff;
            background: var(--primary-gradient);
            box-shadow: 0 4px 20px rgba(108,60,240,0.35);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 50px;
            background: var(--secondary);
            color: #0b0718;
            font-weight: 700;
            font-size: 14px;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(245,158,11,0.3);
        }
        .nav-cta i { font-size: 16px; }
        .nav-cta:hover { background: var(--secondary-dark); color: #0b0718; transform: translateY(-2px); box-shadow: 0 8px 30px rgba(245,158,11,0.4); }
        .nav-toggle { display: none; background: none; color: #fff; font-size: 24px; cursor: pointer; padding: 8px; }

        /* ===== Article Hero ===== */
        .article-hero {
            margin-top: var(--header-height);
            padding: 80px 0 60px;
            background: linear-gradient(135deg, #0f0a1e 0%, #1a1230 50%, #0f0a1e 100%);
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(108,60,240,0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-dim);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a { color: var(--text-muted); }
        .article-breadcrumb a:hover { color: #fff; }
        .article-breadcrumb .sep { color: var(--text-dim); }
        .article-breadcrumb .current { color: var(--primary-light); }
        .article-hero h1 {
            font-size: 40px;
            font-weight: 800;
            max-width: 900px;
            line-height: 1.25;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #fff 60%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            margin-bottom: 8px;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .article-meta i { color: var(--primary-light); font-size: 14px; }
        .article-category-badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            background: rgba(108,60,240,0.2);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 600;
            border: 1px solid rgba(108,60,240,0.3);
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 60px 0 80px;
            background: var(--bg-body);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 50px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px 44px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
        }
        .article-body .content {
            font-size: 16.5px;
            line-height: 1.9;
            color: var(--text-light);
        }
        .article-body .content p { margin-bottom: 20px; }
        .article-body .content h2 {
            font-size: 26px;
            margin: 40px 0 16px;
            color: #fff;
        }
        .article-body .content h3 {
            font-size: 20px;
            margin: 30px 0 12px;
            color: #fff;
        }
        .article-body .content ul, .article-body .content ol {
            margin: 16px 0 20px;
            padding-left: 24px;
        }
        .article-body .content li {
            margin-bottom: 8px;
            color: var(--text-muted);
        }
        .article-body .content a { color: var(--primary-light); text-decoration: underline; text-underline-offset: 3px; }
        .article-body .content a:hover { color: #fff; }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 28px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(108,60,240,0.08);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body .content code {
            background: rgba(255,255,255,0.06);
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 14px;
            color: var(--primary-light);
        }
        .article-body .content pre {
            background: rgba(0,0,0,0.4);
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 24px 0;
            border: 1px solid var(--border-color);
        }
        .article-body .content pre code { background: none; padding: 0; color: var(--text-light); }
        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-not-found i {
            font-size: 64px;
            color: var(--text-dim);
            margin-bottom: 20px;
        }
        .article-not-found h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
            font-size: 16px;
        }
        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 50px;
            background: var(--primary-gradient);
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-back:hover { transform: translateY(-3px); box-shadow: var(--shadow-glow); color: #fff; }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h3 {
            font-size: 18px;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-card h3 i { color: var(--primary-light); font-size: 18px; }
        .sidebar-list { display: flex; flex-direction: column; gap: 12px; }
        .sidebar-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            background: rgba(255,255,255,0.02);
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .sidebar-list a:hover {
            background: rgba(108,60,240,0.08);
            border-color: rgba(108,60,240,0.2);
            transform: translateX(4px);
        }
        .sidebar-list a .num {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(108,60,240,0.15);
            color: var(--primary-light);
            font-size: 12px;
            font-weight: 700;
        }
        .sidebar-list a .text { font-size: 14px; color: var(--text-muted); line-height: 1.4; }
        .sidebar-list a:hover .text { color: #fff; }
        .sidebar-cta {
            background: var(--primary-gradient);
            border: none;
            text-align: center;
            padding: 32px 24px;
        }
        .sidebar-cta h3 { color: #fff; justify-content: center; }
        .sidebar-cta p { color: rgba(255,255,255,0.8); font-size: 14px; margin-bottom: 20px; }
        .sidebar-cta .btn-download {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 15px;
            transition: var(--transition);
        }
        .sidebar-cta .btn-download:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(0,0,0,0.3); color: var(--primary-dark); }

        /* ===== Related Section ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-dark-alt);
            border-top: 1px solid var(--border-color);
        }
        .related-section h2 {
            font-size: 28px;
            margin-bottom: 36px;
            text-align: center;
        }
        .related-section h2 span { 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);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-glow); border-color: var(--primary); }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .related-card .info { padding: 20px 18px; }
        .related-card .info h4 {
            font-size: 16px;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .info p {
            font-size: 13px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark-alt);
            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 { font-size: 20px; margin-bottom: 16px; display: inline-flex; }
        .footer-brand p { color: var(--text-muted); font-size: 14px; max-width: 320px; line-height: 1.7; }
        .footer-col h4 { font-size: 15px; margin-bottom: 18px; color: #fff; }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 14px;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: #fff; padding-left: 6px; }
        .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: 13px;
            color: var(--text-dim);
        }
        .footer-bottom a { color: var(--text-dim); }
        .footer-bottom a:hover { color: var(--primary-light); }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--bg-dark); }
        ::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--primary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; gap: 36px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; background: rgba(11,7,24,0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 20px; gap: 6px; border-bottom: 1px solid var(--border-color); }
            .nav-links.open { display: flex; }
            .nav-links a { width: 100%; text-align: center; padding: 12px; }
            .nav-cta { display: none; }
            .nav-cta.mobile-show { display: inline-flex; margin-top: 8px; width: 100%; justify-content: center; }
            .nav-toggle { display: block; }
            .article-hero h1 { font-size: 28px; }
            .article-body { padding: 28px 20px; }
            .article-meta { gap: 12px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .related-grid { grid-template-columns: 1fr; }
            .sidebar-card { padding: 20px 16px; }
        }
        @media (max-width: 520px) {
            .article-hero { padding: 60px 0 40px; }
            .article-hero h1 { font-size: 22px; }
            .article-body { padding: 20px 14px; }
            .article-body .content { font-size: 15px; }
            .logo { font-size: 18px; }
            .logo i { font-size: 22px; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --secondary: #fdcb6e;
            --secondary-dark: #f0b93d;
            --accent: #fd79a8;
            --accent-dark: #e84393;
            --bg-dark: #0a0a23;
            --bg-darker: #060615;
            --bg-light: #f5f6ff;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8888a8;
            --text-light: #f0f0ff;
            --border: #e8e8f0;
            --border-light: #f0f0f8;
            --shadow-sm: 0 2px 8px rgba(108, 92, 231, 0.08);
            --shadow-md: 0 8px 30px rgba(108, 92, 231, 0.12);
            --shadow-lg: 0 20px 60px rgba(108, 92, 231, 0.18);
            --shadow-hover: 0 16px 48px rgba(108, 92, 231, 0.22);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-w: 1200px;
            --header-h: 72px;
        }

        /* ===== 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-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            min-height: 100vh;
            padding-top: var(--header-h);
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: var(--text-primary);
        }

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

        /* ===== Header / Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(10, 10, 35, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--secondary);
            filter: drop-shadow(0 0 12px rgba(253, 203, 110, 0.4));
        }
        .logo:hover {
            color: var(--secondary);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.35);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 26px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--secondary), #e2b13c);
            color: #1a1a2e;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: 0 4px 20px rgba(253, 203, 110, 0.35);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta i {
            font-size: 1rem;
        }
        .nav-cta:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 32px rgba(253, 203, 110, 0.5);
            color: #1a1a2e;
        }

        .nav-toggle {
            display: none;
            font-size: 1.6rem;
            color: #fff;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            padding: 100px 0 80px;
            background: var(--bg-darker);
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            transform: scale(1.05);
            animation: heroParallax 20s ease-in-out infinite alternate;
        }
        @keyframes heroParallax {
            0% {
                transform: scale(1.05) translate(0, 0);
            }
            100% {
                transform: scale(1.15) translate(-10px, -10px);
            }
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 10, 35, 0.92) 0%, rgba(108, 92, 231, 0.4) 100%);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .category-hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .category-hero h1 i {
            color: var(--secondary);
            margin-right: 12px;
        }
        .category-hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 720px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-top: 8px;
        }
        .hero-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 50px;
            color: #fff;
            font-size: 0.9rem;
            font-weight: 500;
        }
        .hero-tags span i {
            color: var(--secondary);
        }
        .hero-search {
            display: flex;
            max-width: 520px;
            margin: 28px auto 0;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 60px;
            overflow: hidden;
            transition: var(--transition);
        }
        .hero-search:focus-within {
            border-color: var(--secondary);
            box-shadow: 0 0 0 4px rgba(253, 203, 110, 0.15);
        }
        .hero-search input {
            flex: 1;
            padding: 16px 24px;
            background: transparent;
            color: #fff;
            font-size: 1rem;
        }
        .hero-search input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .hero-search button {
            padding: 16px 28px;
            background: var(--secondary);
            color: #1a1a2e;
            font-weight: 700;
            font-size: 1rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .hero-search button:hover {
            background: var(--secondary-dark);
            padding-right: 36px;
        }

        /* ===== Section Common ===== */
        section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-header p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 12px auto 0;
        }

        .section-dark {
            background: var(--bg-dark);
        }
        .section-dark .section-header h2 {
            color: #fff;
        }
        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-light {
            background: #fff;
        }

        /* ===== Game Category Cards ===== */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .cat-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 36px 28px 32px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .cat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }
        .cat-card:hover::before {
            opacity: 1;
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .cat-card .icon {
            font-size: 2.6rem;
            color: var(--primary);
            margin-bottom: 16px;
            display: inline-block;
            background: rgba(108, 92, 231, 0.1);
            width: 68px;
            height: 68px;
            line-height: 68px;
            border-radius: 20px;
            transition: var(--transition);
        }
        .cat-card:hover .icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .cat-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cat-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .cat-card .badge {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(108, 92, 231, 0.1);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* ===== Game Card List ===== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .game-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .game-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .game-card .cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .game-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .game-card:hover .cover img {
            transform: scale(1.06);
        }
        .game-card .cover .tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.3);
        }
        .game-card .cover .tag.hot {
            background: var(--accent);
        }
        .game-card .cover .tag.new {
            background: var(--secondary);
            color: #1a1a2e;
        }
        .game-card .cover .tag.classic {
            background: var(--primary-light);
            color: #1a1a2e;
        }
        .game-card .info {
            padding: 22px 24px 24px;
        }
        .game-card .info h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .game-card .info .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .game-card .info .meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .game-card .info .meta i {
            color: var(--primary);
        }
        .game-card .info .desc {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .game-card .info .actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .game-card .info .actions .btn-download {
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .game-card .info .actions .btn-download:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.3);
            color: #fff;
        }
        .game-card .info .actions .btn-detail {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            background: rgba(108, 92, 231, 0.08);
            color: var(--primary);
            font-weight: 500;
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .game-card .info .actions .btn-detail:hover {
            background: rgba(108, 92, 231, 0.18);
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .feature-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 36px 32px 32px;
            text-align: center;
            transition: var(--transition);
        }
        .feature-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(108, 92, 231, 0.3);
            transform: translateY(-4px);
        }
        .feature-item .f-icon {
            font-size: 2.4rem;
            color: var(--secondary);
            margin-bottom: 16px;
            display: inline-block;
            width: 72px;
            height: 72px;
            line-height: 72px;
            border-radius: 24px;
            background: rgba(253, 203, 110, 0.1);
            transition: var(--transition);
        }
        .feature-item:hover .f-icon {
            background: rgba(253, 203, 110, 0.2);
            transform: scale(1.06);
        }
        .feature-item h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .feature-item p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 32px 20px;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .num {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-item .num span {
            font-size: 1.6rem;
        }
        .stat-item .label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ===== Download Flow ===== */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .flow-step {
            text-align: center;
            padding: 36px 20px 32px;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            position: relative;
            transition: var(--transition);
        }
        .flow-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .flow-step::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            line-height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.3);
        }
        .flow-step .f-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin: 8px 0 14px;
            display: inline-block;
        }
        .flow-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .flow-step p {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            width: 100%;
            padding: 20px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            text-align: left;
            gap: 16px;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 1.2rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 28px;
        }
        .faq-answer p {
            padding-bottom: 24px;
            color: var(--text-secondary);
            font-size: 0.98rem;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 28px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #4a3db8 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 60px 24px;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 42px;
            border-radius: 60px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
            transition: var(--transition);
        }
        .cta-btn:hover {
            transform: translateY(-4px) scale(1.02);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
            color: var(--primary-dark);
        }
        .cta-btn i {
            font-size: 1.2rem;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-darker);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== Load More ===== */
        .load-more-wrap {
            text-align: center;
            margin-top: 40px;
        }
        .btn-load {
            padding: 14px 40px;
            border-radius: 60px;
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .btn-load:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(108, 92, 231, 0.25);
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.3rem;
            box-shadow: 0 8px 24px rgba(108, 92, 231, 0.3);
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: var(--transition);
        }
        .back-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-top:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(108, 92, 231, 0.45);
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .cat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }

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

            .nav-links {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(10, 10, 35, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
                z-index: 999;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-links a {
                width: 100%;
                padding: 14px 18px;
                font-size: 1.05rem;
                border-radius: var(--radius-sm);
            }
            .nav-toggle {
                display: block;
            }

            .category-hero {
                padding: 72px 0 56px;
                min-height: 320px;
            }
            .category-hero h1 {
                font-size: 2.2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .hero-tags span {
                font-size: 0.8rem;
                padding: 6px 14px;
            }

            section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }

            .cat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .game-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-btn {
                padding: 14px 32px;
                font-size: 1rem;
            }
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .category-hero p {
                font-size: 0.92rem;
            }
            .hero-search {
                flex-direction: column;
                border-radius: var(--radius-md);
            }
            .hero-search input {
                padding: 14px 18px;
            }
            .hero-search button {
                padding: 12px 18px;
                justify-content: center;
            }
            .cat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .cat-card {
                padding: 24px 16px 20px;
            }
            .cat-card .icon {
                width: 54px;
                height: 54px;
                line-height: 54px;
                font-size: 2rem;
            }
            .cat-card h3 {
                font-size: 1rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-item .num {
                font-size: 2rem;
            }
            .flow-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .flow-step {
                padding: 28px 16px 24px;
            }
            .game-card .info {
                padding: 16px 18px 20px;
            }
            .game-card .info .actions {
                flex-wrap: wrap;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-answer p {
                font-size: 0.9rem;
            }
            .footer-grid {
                gap: 20px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .cta-section .container {
                padding: 40px 16px;
            }
            .nav-cta {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .nav-cta span {
                display: none;
            }
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-up {
            animation: fadeUp 0.6s ease forwards;
        }
        .fade-up-delay-1 {
            animation-delay: 0.1s;
        }
        .fade-up-delay-2 {
            animation-delay: 0.2s;
        }
        .fade-up-delay-3 {
            animation-delay: 0.3s;
        }
        .fade-up-delay-4 {
            animation-delay: 0.4s;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 16px 0 0;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .breadcrumb a:hover {
            color: var(--secondary);
        }
        .breadcrumb span {
            color: rgba(255, 255, 255, 0.4);
        }
        .breadcrumb .current {
            color: var(--secondary);
            font-weight: 500;
        }