/* roulang page: index */
/* ========== Design Variables ========== */
        :root {
            --color-bg-primary: #0b0a14;
            --color-bg-secondary: #121024;
            --color-bg-card: #1a1832;
            --color-bg-card-hover: #222044;
            --color-bg-sidebar: #0d0c1a;
            --color-bg-hero-overlay: rgba(11, 10, 20, 0.75);
            --color-accent: #7c5cfc;
            --color-accent-light: #9b82ff;
            --color-accent-glow: rgba(124, 92, 252, 0.35);
            --color-accent-soft: rgba(124, 92, 252, 0.12);
            --color-secondary: #ff5e7a;
            --color-secondary-light: #ff7b93;
            --color-tertiary: #3dd9c1;
            --color-text-primary: #eceaf5;
            --color-text-secondary: #b5b2cc;
            --color-text-muted: #7a7799;
            --color-text-on-accent: #ffffff;
            --color-border: #28254a;
            --color-border-light: #353160;
            --color-border-subtle: #1e1c38;
            --color-success: #3dd9c1;
            --color-warning: #f5a623;
            --color-tag-bg: rgba(124, 92, 252, 0.18);
            --color-tag-text: #b9a9ff;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 9999px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.4);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.55);
            --shadow-glow: 0 0 40px var(--color-accent-glow);
            --shadow-card: 0 4px 20px rgba(0,0,0,0.35);
            --shadow-card-hover: 0 10px 36px rgba(0,0,0,0.5), 0 0 0 1px rgba(124,92,252,0.15);
            --transition-fast: 0.15s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1.2);
            --sidebar-width: 248px;
            --sidebar-collapsed: 72px;
            --header-mobile-height: 60px;
            --font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-size-xs: 0.75rem;
            --font-size-sm: 0.875rem;
            --font-size-base: 1rem;
            --font-size-lg: 1.125rem;
            --font-size-xl: 1.25rem;
            --font-size-2xl: 1.5rem;
            --font-size-3xl: 2rem;
            --font-size-4xl: 2.75rem;
            --font-size-5xl: 3.5rem;
            --line-height-tight: 1.2;
            --line-height-normal: 1.6;
            --line-height-relaxed: 1.75;
            --spacing-xs: 6px;
            --spacing-sm: 12px;
            --spacing-md: 20px;
            --spacing-lg: 32px;
            --spacing-xl: 48px;
            --spacing-2xl: 64px;
            --spacing-3xl: 88px;
        }

        /* ========== Reset & Base ========== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }
        body {
            font-family: var(--font-family);
            font-size: var(--font-size-base);
            line-height: var(--line-height-normal);
            color: var(--color-text-primary);
            background-color: var(--color-bg-primary);
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, textarea, select {
            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 {
            font-weight: 700;
            line-height: var(--line-height-tight);
        }
        :focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ========== App Shell Layout ========== */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--color-bg-sidebar);
            border-right: 1px solid var(--color-border-subtle);
            display: flex;
            flex-direction: column;
            z-index: 100;
            transition: transform var(--transition-normal), width var(--transition-normal);
            overflow-y: auto;
            overflow-x: hidden;
        }
        .sidebar-logo-area {
            padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
            border-bottom: 1px solid var(--color-border-subtle);
            flex-shrink: 0;
        }
        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: var(--font-size-xl);
            font-weight: 800;
            color: var(--color-text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .sidebar-logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow);
        }
        .sidebar-logo .logo-text {
            background: linear-gradient(135deg, var(--color-accent-light), #c4b5ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .sidebar-nav {
            flex: 1;
            padding: var(--spacing-md) var(--spacing-sm);
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: 13px 18px;
            border-radius: var(--radius-md);
            color: var(--color-text-secondary);
            font-weight: 500;
            font-size: var(--font-size-sm);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }
        .sidebar-nav a:hover {
            background: var(--color-accent-soft);
            color: var(--color-text-primary);
        }
        .sidebar-nav a.active {
            background: var(--color-accent);
            color: var(--color-text-on-accent);
            font-weight: 600;
            box-shadow: var(--shadow-glow);
        }
        .sidebar-nav a .nav-icon {
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .sidebar-nav a .nav-badge {
            margin-left: auto;
            background: var(--color-secondary);
            color: #fff;
            font-size: 0.7rem;
            padding: 3px 9px;
            border-radius: var(--radius-full);
            font-weight: 600;
            line-height: 1;
        }
        .sidebar-footer {
            padding: var(--spacing-md);
            border-top: 1px solid var(--color-border-subtle);
            flex-shrink: 0;
        }
        .sidebar-footer .user-status {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            font-size: var(--font-size-xs);
            color: var(--color-text-muted);
        }
        .sidebar-footer .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-success);
            box-shadow: 0 0 8px var(--color-success);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        /* ========== Main Content ========== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-width: 0;
            transition: margin-left var(--transition-normal);
        }

        /* ========== Mobile Header ========== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-mobile-height);
            background: var(--color-bg-sidebar);
            border-bottom: 1px solid var(--color-border-subtle);
            z-index: 99;
            align-items: center;
            padding: 0 var(--spacing-md);
            gap: var(--spacing-sm);
        }
        .mobile-header .hamburger {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--color-text-primary);
            flex-shrink: 0;
            transition: background var(--transition-fast);
        }
        .mobile-header .hamburger:hover {
            background: var(--color-accent-soft);
        }
        .mobile-header .mobile-logo {
            font-weight: 800;
            font-size: var(--font-size-lg);
            flex: 1;
            text-align: center;
            background: linear-gradient(135deg, var(--color-accent-light), #c4b5ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.7);
            z-index: 98;
            opacity: 0;
            transition: opacity var(--transition-normal);
            pointer-events: none;
        }
        .mobile-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }

        /* ========== Section Common ========== */
        .section {
            padding: var(--spacing-2xl) var(--spacing-lg);
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }
        .section-header .section-label {
            display: inline-block;
            font-size: var(--font-size-xs);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-accent-light);
            background: var(--color-accent-soft);
            padding: 6px 16px;
            border-radius: var(--radius-full);
            margin-bottom: var(--spacing-sm);
        }
        .section-header h2 {
            font-size: var(--font-size-3xl);
            color: var(--color-text-primary);
            margin-bottom: var(--spacing-xs);
            letter-spacing: 0.01em;
        }
        .section-header p {
            font-size: var(--font-size-lg);
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        .container-wide {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* ========== Hero Section ========== */
        .hero-section {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: var(--spacing-3xl) var(--spacing-lg);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--color-bg-hero-overlay);
            background: linear-gradient(135deg, rgba(11,10,20,0.9) 0%, rgba(11,10,20,0.6) 50%, rgba(11,10,20,0.85) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 700px;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent-soft);
            border: 1px solid var(--color-border-light);
            color: var(--color-accent-light);
            font-size: var(--font-size-sm);
            font-weight: 600;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            margin-bottom: var(--spacing-md);
            animation: fadeInUp 0.7s ease forwards;
        }
        .hero-content .hero-badge .badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            box-shadow: 0 0 10px var(--color-accent);
        }
        .hero-content h1 {
            font-size: var(--font-size-5xl);
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.02em;
            animation: fadeInUp 0.7s ease 0.1s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--color-accent-light), var(--color-tertiary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: var(--font-size-xl);
            color: var(--color-text-secondary);
            line-height: var(--line-height-relaxed);
            margin-bottom: var(--spacing-lg);
            animation: fadeInUp 0.7s ease 0.2s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            animation: fadeInUp 0.7s ease 0.3s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(24px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            font-weight: 600;
            font-size: var(--font-size-base);
            border-radius: var(--radius-md);
            transition: all var(--transition-normal);
            white-space: nowrap;
            letter-spacing: 0.01em;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 4px 20px var(--color-accent-glow);
        }
        .btn-primary:hover {
            background: var(--color-accent-light);
            box-shadow: 0 8px 32px var(--color-accent-glow);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px var(--color-accent-glow);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-text-primary);
            border: 2px solid var(--color-border);
        }
        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent-light);
            background: var(--color-accent-soft);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-lg {
            padding: 17px 36px;
            font-size: var(--font-size-lg);
            border-radius: var(--radius-lg);
        }
        .btn-sm {
            padding: 9px 18px;
            font-size: var(--font-size-sm);
            border-radius: var(--radius-sm);
        }

        /* ========== Features Section ========== */
        .features-section {
            background: var(--color-bg-secondary);
            padding: var(--spacing-2xl) var(--spacing-lg);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .feature-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-subtle);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            text-align: center;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: var(--color-accent);
            border-radius: 0 0 4px 4px;
            opacity: 0;
            transition: opacity var(--transition-normal);
        }
        .feature-card:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto var(--spacing-md);
            border-radius: var(--radius-md);
            background: var(--color-accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--color-accent-light);
            transition: all var(--transition-normal);
        }
        .feature-card:hover .feature-icon {
            background: var(--color-accent);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .feature-card h3 {
            font-size: var(--font-size-lg);
            color: var(--color-text-primary);
            margin-bottom: var(--spacing-xs);
        }
        .feature-card p {
            font-size: var(--font-size-sm);
            color: var(--color-text-muted);
            line-height: var(--line-height-relaxed);
        }

        /* ========== Category Cards ========== */
        .category-section {
            padding: var(--spacing-2xl) var(--spacing-lg);
            background: var(--color-bg-primary);
        }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 260px;
            cursor: pointer;
            transition: all var(--transition-slow);
            border: 1px solid var(--color-border-subtle);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border-light);
        }
        .category-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .category-card:hover img {
            transform: scale(1.08);
        }
        .category-card .card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(11,10,20,0.95) 0%, rgba(11,10,20,0.3) 50%, rgba(11,10,20,0.1) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: var(--spacing-lg);
        }
        .category-card .card-overlay h3 {
            font-size: var(--font-size-2xl);
            color: #fff;
            margin-bottom: 4px;
            font-weight: 700;
        }
        .category-card .card-overlay span {
            font-size: var(--font-size-sm);
            color: var(--color-accent-light);
            font-weight: 500;
        }
        .category-card .card-tag {
            position: absolute;
            top: var(--spacing-md);
            right: var(--spacing-md);
            background: var(--color-accent);
            color: #fff;
            font-size: var(--font-size-xs);
            font-weight: 700;
            padding: 5px 12px;
            border-radius: var(--radius-full);
            z-index: 2;
        }

        /* ========== CMS News List ========== */
        .news-section {
            padding: var(--spacing-2xl) var(--spacing-lg);
            background: var(--color-bg-secondary);
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            padding: var(--spacing-md);
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-subtle);
            border-radius: var(--radius-md);
            transition: all var(--transition-normal);
        }
        .news-item:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-card-hover);
            transform: translateX(4px);
            background: var(--color-bg-card-hover);
        }
        .news-item .news-thumb {
            width: 80px;
            height: 60px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-secondary);
        }
        .news-item .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-item .news-info h4 {
            font-size: var(--font-size-base);
            color: var(--color-text-primary);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            font-weight: 600;
        }
        .news-item .news-info .news-meta {
            font-size: var(--font-size-xs);
            color: var(--color-text-muted);
            display: flex;
            gap: var(--spacing-sm);
            align-items: center;
        }
        .news-item .news-arrow {
            color: var(--color-text-muted);
            font-size: 1.2rem;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .news-item:hover .news-arrow {
            color: var(--color-accent);
            transform: translateX(3px);
        }
        .news-empty {
            text-align: center;
            padding: var(--spacing-xl);
            color: var(--color-text-muted);
            font-size: var(--font-size-lg);
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--color-border);
        }
        .news-tag {
            display: inline-block;
            font-size: var(--font-size-xs);
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            background: var(--color-tag-bg);
            color: var(--color-tag-text);
            margin-right: 6px;
        }

        /* ========== Stats Section ========== */
        .stats-section {
            padding: var(--spacing-2xl) var(--spacing-lg);
            background: var(--color-bg-primary);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .stat-card {
            text-align: center;
            padding: var(--spacing-lg);
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-subtle);
            border-radius: var(--radius-lg);
            transition: all var(--transition-normal);
        }
        .stat-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
        }
        .stat-card .stat-number {
            font-size: var(--font-size-4xl);
            font-weight: 800;
            color: var(--color-accent-light);
            margin-bottom: 4px;
            letter-spacing: -0.02em;
        }
        .stat-card .stat-label {
            font-size: var(--font-size-sm);
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* ========== FAQ Section ========== */
        .faq-section {
            padding: var(--spacing-2xl) var(--spacing-lg);
            background: var(--color-bg-secondary);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-normal);
        }
        .faq-item:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-md) var(--spacing-lg);
            font-weight: 600;
            font-size: var(--font-size-base);
            color: var(--color-text-primary);
            text-align: left;
            transition: color var(--transition-fast);
            gap: var(--spacing-md);
        }
        .faq-question:hover {
            color: var(--color-accent-light);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: var(--color-accent-light);
            flex-shrink: 0;
            transition: all var(--transition-normal);
        }
        .faq-answer {
            padding: 0 var(--spacing-lg) var(--spacing-md);
            font-size: var(--font-size-sm);
            color: var(--color-text-secondary);
            line-height: var(--line-height-relaxed);
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--color-accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-item.open {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-card);
        }

        /* ========== CTA Section ========== */
        .cta-section {
            padding: var(--spacing-2xl) var(--spacing-lg);
            background: var(--color-bg-primary);
            text-align: center;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--color-bg-card), var(--color-bg-card-hover));
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-xl);
            padding: var(--spacing-2xl) var(--spacing-lg);
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: var(--color-accent-glow);
            filter: blur(80px);
            z-index: 0;
        }
        .cta-box > * {
            position: relative;
            z-index: 1;
        }
        .cta-box h2 {
            font-size: var(--font-size-3xl);
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }
        .cta-box p {
            font-size: var(--font-size-lg);
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-lg);
        }
        .cta-box .cta-actions {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--color-bg-sidebar);
            border-top: 1px solid var(--color-border-subtle);
            padding: var(--spacing-xl) var(--spacing-lg);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            max-width: 1200px;
            margin: 0 auto;
        }
        .footer-col h4 {
            font-size: var(--font-size-sm);
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: var(--spacing-md);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: var(--font-size-sm);
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }
        .footer-brand {
            font-size: var(--font-size-lg);
            font-weight: 800;
            color: var(--color-text-primary);
            margin-bottom: var(--spacing-sm);
            background: linear-gradient(135deg, var(--color-accent-light), #c4b5ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }
        .footer-bottom {
            max-width: 1200px;
            margin: var(--spacing-lg) auto 0;
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--color-border-subtle);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: var(--font-size-xs);
            color: var(--color-text-muted);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1200px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            :root {
                --font-size-5xl: 2.8rem;
                --font-size-4xl: 2.2rem;
                --font-size-3xl: 1.7rem;
            }
        }
        @media (max-width: 1024px) {
            :root { --sidebar-width: 210px; }
            .hero-content h1 { font-size: 2.4rem; }
        }
        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
                z-index: 99;
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: var(--shadow-lg);
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .mobile-overlay {
                display: block;
            }
            .hero-section {
                min-height: 440px;
                padding-top: calc(var(--header-mobile-height) + var(--spacing-xl));
                padding-left: var(--spacing-md);
                padding-right: var(--spacing-md);
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-content p {
                font-size: var(--font-size-base);
            }
            .features-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .category-card { height: 200px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .stat-card .stat-number { font-size: 2rem; }
            .news-item { flex-direction: column; align-items: flex-start; }
            .news-item .news-thumb { width: 100%; height: 140px; }
            .footer-grid { grid-template-columns: 1fr; }
            .section { padding: var(--spacing-xl) var(--spacing-md); }
            .section-header h2 { font-size: 1.5rem; }
            .section-header p { font-size: var(--font-size-base); }
            .cta-box { padding: var(--spacing-lg) var(--spacing-md); }
            .cta-box h2 { font-size: 1.6rem; }
            .btn-lg { padding: 14px 24px; font-size: var(--font-size-base); }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            :root {
                --spacing-2xl: 40px;
                --spacing-3xl: 56px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: 1fr; }
            .stat-card .stat-number { font-size: 1.7rem; }
            .hero-content h1 { font-size: 1.6rem; }
            .category-card { height: 170px; }
            .faq-question { font-size: var(--font-size-sm); padding: var(--spacing-sm) var(--spacing-md); }
            .faq-answer { padding: 0 var(--spacing-md) var(--spacing-sm); font-size: var(--font-size-xs); }
            .footer-bottom { flex-direction: column; text-align: center; }
            :root {
                --spacing-lg: 24px;
                --spacing-xl: 32px;
            }
        }

        /* ========== Scrollbar ========== */
        .sidebar::-webkit-scrollbar { width: 4px; }
        .sidebar::-webkit-scrollbar-track { background: transparent; }
        .sidebar::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 10px; }
        .sidebar::-webkit-scrollbar-thumb:hover { background: var(--color-border-light); }

        /* ========== Utility Animations ========== */
        .fade-in {
            animation: fadeIn 0.6s ease forwards;
        }
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

/* roulang page: article */
:root {
            --color-primary: #2563eb;
            --color-primary-dark: #1d4ed8;
            --color-primary-light: #3b82f6;
            --color-accent: #0891b2;
            --color-accent-light: #06b6d4;
            --color-bg: #f1f5f9;
            --color-surface: #ffffff;
            --color-sidebar: #0f172a;
            --color-sidebar-hover: #1e293b;
            --color-sidebar-active: #1e3a5f;
            --color-text: #1e293b;
            --color-text-secondary: #475569;
            --color-text-muted: #64748b;
            --color-text-light: #94a3b8;
            --color-text-on-dark: #e2e8f0;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15), 0 8px 16px rgba(0, 0, 0, 0.06);
            --font-size-xs: 12px;
            --font-size-sm: 14px;
            --font-size-base: 16px;
            --font-size-md: 17px;
            --font-size-lg: 18px;
            --font-size-xl: 20px;
            --font-size-2xl: 24px;
            --font-size-3xl: 30px;
            --font-size-4xl: 36px;
            --font-size-5xl: 42px;
            --sidebar-width: 250px;
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        }

        *,
        *::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: var(--font-size-base);
            line-height: 1.6;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--color-sidebar);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.15);
            transition: transform var(--transition-slow);
            overflow-y: auto;
            overflow-x: hidden;
        }

        .sidebar-brand {
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            flex-shrink: 0;
        }

        .sidebar-brand .brand-name {
            font-size: var(--font-size-xl);
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }

        .sidebar-brand .brand-subtitle {
            font-size: var(--font-size-xs);
            color: var(--color-text-light);
            margin-top: 4px;
            letter-spacing: 0.04em;
        }

        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--color-text-on-dark);
            font-size: var(--font-size-sm);
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.01em;
        }

        .sidebar-nav a:hover {
            background: var(--color-sidebar-hover);
            color: #ffffff;
        }

        .sidebar-nav a.active {
            background: var(--color-sidebar-active);
            color: #ffffff;
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--color-primary-light);
        }

        .sidebar-nav .nav-icon {
            font-size: 18px;
            width: 24px;
            text-align: center;
            flex-shrink: 0;
        }

        .sidebar-nav .nav-badge {
            margin-left: auto;
            font-size: 10px;
            background: linear-gradient(135deg, #ef4444, #f97316);
            color: #fff;
            padding: 3px 8px;
            border-radius: 20px;
            font-weight: 600;
            letter-spacing: 0.03em;
            animation: badgePulse 2s ease-in-out infinite;
        }

        @keyframes badgePulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.75;
            }
        }

        .sidebar-footer-info {
            padding: 16px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: var(--font-size-xs);
            color: var(--color-text-light);
            flex-shrink: 0;
        }

        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            width: calc(100% - var(--sidebar-width));
            transition: margin-left var(--transition-slow), width var(--transition-slow);
        }

        .mobile-top-bar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--color-sidebar);
            z-index: 999;
            align-items: center;
            padding: 0 16px;
            gap: 12px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }

        .mobile-top-bar .hamburger {
            width: 36px;
            height: 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            padding: 6px;
            cursor: pointer;
            flex-shrink: 0;
        }

        .mobile-top-bar .hamburger span {
            display: block;
            height: 2.5px;
            background: #ffffff;
            border-radius: 2px;
            transition: all var(--transition-fast);
            width: 100%;
        }

        .mobile-top-bar .hamburger.open span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .mobile-top-bar .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .mobile-top-bar .hamburger.open span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .mobile-top-bar .mobile-brand {
            font-weight: 700;
            font-size: var(--font-size-lg);
            color: #ffffff;
            letter-spacing: 0.02em;
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition-base);
            pointer-events: none;
        }

        .sidebar-overlay.visible {
            opacity: 1;
            pointer-events: auto;
        }

        .article-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 60px 40px;
            color: #ffffff;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(15, 23, 42, 0.7) 40%, rgba(8, 145, 178, 0.45) 100%);
            z-index: 1;
        }

        .article-banner-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: var(--font-size-sm);
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.5);
            font-size: var(--font-size-xs);
        }

        .breadcrumb .current {
            color: #ffffff;
            font-weight: 500;
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-banner .article-meta-top {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .article-category-tag {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: var(--font-size-xs);
            font-weight: 600;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        .article-date-badge {
            font-size: var(--font-size-sm);
            color: rgba(255, 255, 255, 0.75);
        }

        .article-banner h1 {
            font-size: var(--font-size-4xl);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.01em;
            margin: 0;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }

        .article-body-section {
            max-width: 860px;
            margin: 0 auto;
            padding: 40px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            margin-top: -30px;
            position: relative;
            z-index: 5;
        }

        .article-featured-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: var(--shadow-lg);
        }

        .article-featured-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform var(--transition-slow);
        }

        .article-featured-image:hover img {
            transform: scale(1.01);
        }

        .article-content {
            font-size: var(--font-size-md);
            line-height: 1.85;
            color: var(--color-text);
        }

        .article-content p {
            margin-bottom: 20px;
        }

        .article-content h2 {
            font-size: var(--font-size-2xl);
            font-weight: 700;
            margin-top: 36px;
            margin-bottom: 16px;
            color: var(--color-text);
            letter-spacing: -0.01em;
        }

        .article-content h3 {
            font-size: var(--font-size-xl);
            font-weight: 600;
            margin-top: 28px;
            margin-bottom: 12px;
            color: var(--color-text);
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }

        .article-content ul {
            list-style: disc;
        }
        .article-content ol {
            list-style: decimal;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-content blockquote {
            border-left: 4px solid var(--color-primary);
            background: #f8fafc;
            padding: 20px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: italic;
            color: var(--color-text-secondary);
        }

        .article-content code {
            background: #f1f5f9;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
        }

        .article-not-found {
            text-align: center;
            padding: 60px 40px;
        }

        .article-not-found .not-found-icon {
            font-size: 64px;
            margin-bottom: 20px;
        }

        .article-not-found h3 {
            font-size: var(--font-size-2xl);
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--color-text-muted);
            margin-bottom: 24px;
            font-size: var(--font-size-lg);
        }

        .back-home-btn {
            display: inline-block;
            background: var(--color-primary);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: var(--font-size-base);
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }

        .back-home-btn:hover {
            background: var(--color-primary-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .related-section {
            max-width: 860px;
            margin: 50px auto 0;
            padding: 0 20px;
        }

        .related-section .section-label {
            font-size: var(--font-size-xs);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-primary);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .related-section h2 {
            font-size: var(--font-size-3xl);
            font-weight: 700;
            margin-bottom: 32px;
            letter-spacing: -0.01em;
            color: var(--color-text);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .related-card .card-image {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

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

        .related-card:hover .card-image img {
            transform: scale(1.06);
        }

        .related-card .card-body {
            padding: 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card .card-category {
            font-size: var(--font-size-xs);
            color: var(--color-primary);
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 6px;
        }

        .related-card .card-title {
            font-size: var(--font-size-base);
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-text);
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-meta {
            font-size: var(--font-size-xs);
            color: var(--color-text-muted);
            margin-top: 10px;
        }

        .faq-section {
            max-width: 860px;
            margin: 60px auto 0;
            padding: 0 20px;
        }

        .faq-section .section-label {
            font-size: var(--font-size-xs);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-primary);
            font-weight: 700;
            margin-bottom: 8px;
            text-align: center;
        }

        .faq-section h2 {
            font-size: var(--font-size-3xl);
            font-weight: 700;
            margin-bottom: 36px;
            letter-spacing: -0.01em;
            color: var(--color-text);
            text-align: center;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }

        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: var(--font-size-base);
            color: var(--color-text);
            text-align: left;
            transition: color var(--transition-fast);
            gap: 16px;
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #f1f5f9;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .faq-item.open .faq-arrow {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: all var(--transition-base);
            color: var(--color-text-secondary);
        }

        .faq-item.open .faq-answer {
            padding: 0 24px 20px;
            max-height: 300px;
        }

        .cta-section {
            max-width: 860px;
            margin: 60px auto 0;
            padding: 0 20px;
        }

        .cta-card {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f172a 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            border-radius: var(--radius-xl);
            padding: 50px 40px;
            text-align: center;
            color: #ffffff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-xl);
        }

        .cta-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 23, 42, 0.65);
            z-index: 1;
            border-radius: var(--radius-xl);
        }

        .cta-card>* {
            position: relative;
            z-index: 2;
        }

        .cta-card h2 {
            font-size: var(--font-size-3xl);
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .cta-card p {
            font-size: var(--font-size-lg);
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            line-height: 1.6;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary-cta {
            display: inline-block;
            background: var(--color-primary);
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: var(--font-size-base);
            transition: all var(--transition-fast);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.4);
            letter-spacing: 0.02em;
        }

        .btn-primary-cta:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 6px 24px rgba(37, 99, 235, 0.55);
            transform: translateY(-2px);
        }

        .btn-outline-cta {
            display: inline-block;
            background: transparent;
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: var(--font-size-base);
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .btn-outline-cta:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }

        .site-footer {
            margin-top: 60px;
            background: var(--color-sidebar);
            color: var(--color-text-on-dark);
            padding: 50px 40px 30px;
            margin-left: 0;
            width: 100%;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 30px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .footer-col .footer-brand {
            font-size: var(--font-size-xl);
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.02em;
        }

        .footer-col h4 {
            font-size: var(--font-size-sm);
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: var(--color-text-light);
            font-size: var(--font-size-sm);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #ffffff;
            text-decoration: underline;
        }

        .footer-bottom {
            max-width: 1100px;
            margin: 30px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            justify-content: space-between;
            font-size: var(--font-size-xs);
            color: var(--color-text-light);
            flex-wrap: wrap;
            gap: 8px;
        }

        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .article-banner h1 {
                font-size: var(--font-size-3xl);
            }

            .article-body-section {
                padding: 30px 24px;
                margin-top: -20px;
                border-radius: var(--radius-md);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                box-shadow: none;
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: 4px 0 30px rgba(0, 0, 0, 0.4);
            }

            .sidebar-overlay {
                display: block;
            }

            .mobile-top-bar {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                width: 100%;
                padding-top: 56px;
            }

            .article-banner {
                padding: 40px 20px;
            }

            .article-banner h1 {
                font-size: var(--font-size-2xl);
            }

            .article-body-section {
                padding: 24px 16px;
                margin: -16px 12px 0;
                border-radius: var(--radius-md);
            }

            .article-content {
                font-size: var(--font-size-base);
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .related-section {
                padding: 0 12px;
                margin-top: 36px;
            }

            .related-section h2 {
                font-size: var(--font-size-2xl);
            }

            .faq-section {
                padding: 0 12px;
                margin-top: 40px;
            }

            .cta-section {
                padding: 0 12px;
                margin-top: 40px;
            }
            .cta-card {
                padding: 36px 20px;
            }
            .cta-card h2 {
                font-size: var(--font-size-2xl);
            }

            .site-footer {
                padding: 36px 20px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }

            .breadcrumb .current {
                max-width: 180px;
            }
        }

        @media (max-width: 520px) {
            .article-banner {
                padding: 30px 16px;
            }
            .article-banner h1 {
                font-size: var(--font-size-xl);
            }
            .article-body-section {
                padding: 20px 14px;
                margin: -12px 8px 0;
            }
            .article-content {
                font-size: var(--font-size-sm);
                line-height: 1.75;
            }
            .related-card .card-image {
                height: 160px;
            }
            .cta-card {
                padding: 28px 16px;
            }
            .cta-buttons {
                flex-direction: column;
                gap: 10px;
            }
            .btn-primary-cta,
            .btn-outline-cta {
                text-align: center;
                width: 100%;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #6C5CE7;
            --color-primary-dark: #5A4BD1;
            --color-primary-light: #8B7DF0;
            --color-accent: #FF6B6B;
            --color-accent-gold: #FFD93D;
            --color-bg: #f0f2f5;
            --color-bg-alt: #1a1a2e;
            --color-bg-card: #ffffff;
            --color-bg-sidebar: #1a1a2e;
            --color-sidebar-hover: #252540;
            --color-text: #2d3436;
            --color-text-light: #555;
            --color-text-muted: #8a8fa3;
            --color-text-on-dark: #d0d3e0;
            --color-text-white: #ffffff;
            --color-border: #e8eaef;
            --color-border-light: #f0f1f5;
            --color-success: #00b894;
            --color-warning: #fdcb6e;
            --color-shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --color-shadow-md: 0 4px 20px rgba(0,0,0,0.10);
            --color-shadow-lg: 0 8px 36px rgba(0,0,0,0.14);
            --color-shadow-xl: 0 16px 48px rgba(0,0,0,0.18);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 50px;
            --font-size-xs: 0.75rem;
            --font-size-sm: 0.85rem;
            --font-size-base: 1rem;
            --font-size-md: 1.1rem;
            --font-size-lg: 1.25rem;
            --font-size-xl: 1.5rem;
            --font-size-2xl: 2rem;
            --font-size-3xl: 2.5rem;
            --font-size-hero: 3rem;
            --spacing-xs: 6px;
            --spacing-sm: 12px;
            --spacing-md: 20px;
            --spacing-lg: 32px;
            --spacing-xl: 48px;
            --spacing-2xl: 64px;
            --spacing-3xl: 80px;
            --sidebar-width: 240px;
            --sidebar-collapsed: 0px;
            --topbar-height: 56px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4,0,0.2,1);
            --transition-bounce: 0.4s cubic-bezier(0.34,1.56,0.64,1);
            --font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
        }

        *,*::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-family);
            font-size:var(--font-size-base);
            line-height:1.7;
            color:var(--color-text);
            background:var(--color-bg);
            min-height:100vh;
            overflow-x:hidden;
        }
        a{text-decoration:none;color:inherit;transition:color var(--transition-fast);}
        img{max-width:100%;height:auto;display:block;}
        ul,ol{list-style:none;}
        button,input,select,textarea{font-family:inherit;font-size:inherit;border:none;outline:none;background:none;}
        button{cursor:pointer;}
        h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;color:var(--color-text);}
        p{margin-bottom:0.6em;}
        p:last-child{margin-bottom:0;}

        /* ========== SIDEBAR (桌面端固定) ========== */
        .app-sidebar{
            position:fixed;
            top:0;
            left:0;
            width:var(--sidebar-width);
            height:100vh;
            background:var(--color-bg-sidebar);
            z-index:1000;
            display:flex;
            flex-direction:column;
            transition:transform var(--transition-smooth), box-shadow var(--transition-smooth);
            overflow-y:auto;
            overflow-x:hidden;
            box-shadow:2px 0 24px rgba(0,0,0,0.25);
        }
        .sidebar-brand{
            display:flex;
            align-items:center;
            gap:var(--spacing-sm);
            padding:var(--spacing-lg) var(--spacing-md);
            border-bottom:1px solid rgba(255,255,255,0.08);
            flex-shrink:0;
        }
        .sidebar-brand-icon{
            width:40px;
            height:40px;
            border-radius:var(--radius-md);
            background:linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            display:flex;
            align-items:center;
            justify-content:center;
            font-size:1.3rem;
            color:#fff;
            flex-shrink:0;
        }
        .sidebar-brand-text{
            font-size:var(--font-size-lg);
            font-weight:700;
            color:var(--color-text-white);
            letter-spacing:0.5px;
            white-space:nowrap;
        }
        .sidebar-brand-sub{
            font-size:var(--font-size-xs);
            color:var(--color-text-muted);
            display:block;
            font-weight:400;
            letter-spacing:1px;
        }
        .sidebar-nav{
            flex:1;
            padding:var(--spacing-md);
            display:flex;
            flex-direction:column;
            gap:4px;
        }
        .sidebar-nav a{
            display:flex;
            align-items:center;
            gap:var(--spacing-sm);
            padding:12px 16px;
            border-radius:var(--radius-md);
            color:var(--color-text-on-dark);
            font-size:var(--font-size-sm);
            font-weight:500;
            transition:all var(--transition-fast);
            position:relative;
            white-space:nowrap;
        }
        .sidebar-nav a:hover{
            background:var(--color-sidebar-hover);
            color:var(--color-text-white);
            transform:translateX(2px);
        }
        .sidebar-nav a.active{
            background:linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color:#fff;
            font-weight:600;
            box-shadow:0 4px 16px rgba(108,92,231,0.35);
        }
        .sidebar-nav a .nav-icon{
            font-size:1.1rem;
            width:22px;
            text-align:center;
            flex-shrink:0;
        }
        .sidebar-nav a .nav-badge{
            margin-left:auto;
            font-size:var(--font-size-xs);
            background:var(--color-accent);
            color:#fff;
            padding:3px 10px;
            border-radius:var(--radius-full);
            font-weight:600;
            letter-spacing:0.5px;
            animation:pulse-badge 2s ease-in-out infinite;
        }
        @keyframes pulse-badge{
            0%,100%{transform:scale(1);}
            50%{transform:scale(1.08);}
        }
        .sidebar-divider{
            height:1px;
            background:rgba(255,255,255,0.08);
            margin:var(--spacing-sm) 0;
        }
        .sidebar-footer-info{
            padding:var(--spacing-md);
            border-top:1px solid rgba(255,255,255,0.08);
            flex-shrink:0;
        }
        .sidebar-footer-info p{
            font-size:var(--font-size-xs);
            color:var(--color-text-muted);
            line-height:1.5;
            margin:0;
        }

        /* ========== 移动端顶部栏 ========== */
        .mobile-topbar{
            display:none;
            position:fixed;
            top:0;
            left:0;
            right:0;
            height:var(--topbar-height);
            background:var(--color-bg-sidebar);
            z-index:999;
            align-items:center;
            padding:0 var(--spacing-md);
            box-shadow:0 2px 12px rgba(0,0,0,0.2);
        }
        .mobile-topbar .hamburger-btn{
            width:40px;
            height:40px;
            display:flex;
            align-items:center;
            justify-content:center;
            border-radius:var(--radius-sm);
            color:#fff;
            font-size:1.4rem;
            flex-shrink:0;
            transition:background var(--transition-fast);
        }
        .mobile-topbar .hamburger-btn:hover{
            background:rgba(255,255,255,0.1);
        }
        .mobile-topbar .topbar-logo{
            font-size:var(--font-size-md);
            font-weight:700;
            color:#fff;
            margin-left:var(--spacing-sm);
            letter-spacing:0.5px;
        }

        /* ========== OVERLAY (移动端) ========== */
        .sidebar-overlay{
            display:none;
            position:fixed;
            inset:0;
            background:rgba(0,0,0,0.55);
            z-index:998;
            opacity:0;
            transition:opacity var(--transition-smooth);
            pointer-events:none;
        }
        .sidebar-overlay.active{
            opacity:1;
            pointer-events:auto;
        }
        .mobile-close-sidebar{
            display:none;
            position:absolute;
            top:12px;
            right:12px;
            width:36px;
            height:36px;
            border-radius:50%;
            background:rgba(255,255,255,0.1);
            color:#fff;
            font-size:1.2rem;
            align-items:center;
            justify-content:center;
            z-index:1001;
            transition:background var(--transition-fast);
        }
        .mobile-close-sidebar:hover{
            background:rgba(255,255,255,0.2);
        }

        /* ========== 主内容区 ========== */
        .main-content{
            margin-left:var(--sidebar-width);
            min-height:100vh;
            display:flex;
            flex-direction:column;
            transition:margin var(--transition-smooth);
        }

        /* ========== 分类Banner ========== */
        .category-banner{
            position:relative;
            background:linear-gradient(135deg, var(--color-bg-alt) 0%, #252540 50%, #1f1f3a 100%);
            background-image:url('/assets/images/backpic/back-1.png');
            background-size:cover;
            background-position:center;
            background-blend-mode:overlay;
            min-height:320px;
            display:flex;
            align-items:center;
            justify-content:center;
            text-align:center;
            padding:var(--spacing-3xl) var(--spacing-lg);
            overflow:hidden;
        }
        .category-banner::before{
            content:'';
            position:absolute;
            inset:0;
            background:linear-gradient(180deg, rgba(26,26,46,0.7) 0%, rgba(26,26,46,0.85) 100%);
            z-index:1;
        }
        .category-banner::after{
            content:'';
            position:absolute;
            top:-60px;
            right:-60px;
            width:220px;
            height:220px;
            border-radius:50%;
            background:radial-gradient(circle, rgba(108,92,231,0.25) 0%, transparent 70%);
            z-index:1;
            pointer-events:none;
        }
        .banner-inner{
            position:relative;
            z-index:2;
            max-width:700px;
            width:100%;
        }
        .banner-breadcrumb{
            display:flex;
            align-items:center;
            justify-content:center;
            gap:8px;
            font-size:var(--font-size-sm);
            color:var(--color-text-muted);
            margin-bottom:var(--spacing-md);
        }
        .banner-breadcrumb a{
            color:var(--color-text-on-dark);
            transition:color var(--transition-fast);
        }
        .banner-breadcrumb a:hover{
            color:var(--color-primary-light);
        }
        .banner-breadcrumb .sep{
            color:var(--color-text-muted);
            font-size:0.7rem;
        }
        .banner-breadcrumb .current{
            color:var(--color-primary-light);
            font-weight:500;
        }
        .banner-title{
            font-size:var(--font-size-hero);
            font-weight:800;
            color:#fff;
            margin-bottom:var(--spacing-sm);
            letter-spacing:1px;
        }
        .banner-title .highlight{
            color:var(--color-primary-light);
        }
        .banner-subtitle{
            font-size:var(--font-size-lg);
            color:var(--color-text-on-dark);
            margin-bottom:var(--spacing-lg);
            line-height:1.6;
        }
        .banner-search-wrap{
            display:flex;
            max-width:480px;
            margin:0 auto;
            gap:0;
            background:#fff;
            border-radius:var(--radius-full);
            overflow:hidden;
            box-shadow:var(--color-shadow-lg);
        }
        .banner-search-wrap input{
            flex:1;
            padding:14px 20px;
            font-size:var(--font-size-sm);
            color:var(--color-text);
            background:transparent;
        }
        .banner-search-wrap input::placeholder{
            color:var(--color-text-muted);
        }
        .banner-search-wrap button{
            padding:14px 24px;
            background:var(--color-primary);
            color:#fff;
            font-weight:600;
            font-size:var(--font-size-sm);
            transition:all var(--transition-fast);
            white-space:nowrap;
            letter-spacing:0.5px;
        }
        .banner-search-wrap button:hover{
            background:var(--color-primary-dark);
        }
        .banner-stats{
            display:flex;
            justify-content:center;
            gap:var(--spacing-xl);
            margin-top:var(--spacing-lg);
            flex-wrap:wrap;
        }
        .banner-stat-item{
            text-align:center;
        }
        .banner-stat-num{
            font-size:var(--font-size-2xl);
            font-weight:800;
            color:#fff;
            display:block;
        }
        .banner-stat-label{
            font-size:var(--font-size-xs);
            color:var(--color-text-muted);
            letter-spacing:0.5px;
        }

        /* ========== 通用容器 ========== */
        .section-container{
            max-width:1100px;
            margin:0 auto;
            padding:var(--spacing-2xl) var(--spacing-lg);
        }
        .section-header{
            text-align:center;
            margin-bottom:var(--spacing-xl);
        }
        .section-header h2{
            font-size:var(--font-size-2xl);
            font-weight:700;
            margin-bottom:var(--spacing-xs);
        }
        .section-header .section-subtitle{
            color:var(--color-text-muted);
            font-size:var(--font-size-sm);
        }

        /* ========== 筛选标签栏 ========== */
        .filter-bar{
            display:flex;
            flex-wrap:wrap;
            gap:var(--spacing-xs);
            justify-content:center;
            margin-bottom:var(--spacing-lg);
            padding:0 var(--spacing-lg);
        }
        .filter-tag{
            padding:10px 22px;
            border-radius:var(--radius-full);
            font-size:var(--font-size-sm);
            font-weight:500;
            cursor:pointer;
            background:var(--color-bg-card);
            color:var(--color-text-light);
            border:2px solid var(--color-border);
            transition:all var(--transition-fast);
            user-select:none;
            white-space:nowrap;
        }
        .filter-tag:hover{
            border-color:var(--color-primary-light);
            color:var(--color-primary);
            background:rgba(108,92,231,0.04);
        }
        .filter-tag.active{
            background:var(--color-primary);
            color:#fff;
            border-color:var(--color-primary);
            font-weight:600;
            box-shadow:0 4px 14px rgba(108,92,231,0.3);
        }
        .filter-count{
            display:inline-block;
            background:rgba(255,255,255,0.25);
            padding:2px 8px;
            border-radius:var(--radius-full);
            font-size:var(--font-size-xs);
            margin-left:4px;
        }
        .filter-tag.active .filter-count{
            background:rgba(255,255,255,0.3);
        }

        /* ========== 游戏卡片网格 ========== */
        .games-grid{
            display:grid;
            grid-template-columns:repeat(3, 1fr);
            gap:var(--spacing-md);
            padding:0 var(--spacing-lg);
        }
        .game-card{
            background:var(--color-bg-card);
            border-radius:var(--radius-lg);
            overflow:hidden;
            box-shadow:var(--color-shadow-sm);
            transition:all var(--transition-smooth);
            cursor:pointer;
            position:relative;
            border:1px solid var(--color-border-light);
            display:flex;
            flex-direction:column;
        }
        .game-card:hover{
            transform:translateY(-6px);
            box-shadow:var(--color-shadow-lg);
            border-color:transparent;
        }
        .game-card-img-wrap{
            position:relative;
            aspect-ratio:16/10;
            overflow:hidden;
            background:#eef0f5;
        }
        .game-card-img-wrap img{
            width:100%;
            height:100%;
            object-fit:cover;
            transition:transform var(--transition-smooth);
        }
        .game-card:hover .game-card-img-wrap img{
            transform:scale(1.06);
        }
        .game-card-badge{
            position:absolute;
            top:12px;
            left:12px;
            padding:5px 14px;
            border-radius:var(--radius-full);
            font-size:var(--font-size-xs);
            font-weight:700;
            letter-spacing:0.5px;
            z-index:2;
        }
        .badge-hot{
            background:var(--color-accent);
            color:#fff;
        }
        .badge-new{
            background:var(--color-success);
            color:#fff;
        }
        .badge-recommend{
            background:var(--color-accent-gold);
            color:#333;
        }
        .game-card-body{
            padding:var(--spacing-md);
            flex:1;
            display:flex;
            flex-direction:column;
            gap:6px;
        }
        .game-card-category{
            font-size:var(--font-size-xs);
            color:var(--color-primary);
            font-weight:600;
            letter-spacing:0.5px;
            text-transform:uppercase;
        }
        .game-card-title{
            font-size:var(--font-size-md);
            font-weight:700;
            color:var(--color-text);
            line-height:1.3;
        }
        .game-card-desc{
            font-size:var(--font-size-xs);
            color:var(--color-text-muted);
            line-height:1.5;
            flex:1;
        }
        .game-card-meta{
            display:flex;
            align-items:center;
            justify-content:space-between;
            padding-top:var(--spacing-xs);
            border-top:1px solid var(--color-border-light);
            font-size:var(--font-size-xs);
            color:var(--color-text-muted);
        }
        .game-card-rating{
            display:flex;
            align-items:center;
            gap:4px;
            color:var(--color-accent-gold);
            font-weight:600;
        }
        .game-card-rating .star{
            font-size:0.9rem;
        }
        .game-card-players{
            color:var(--color-text-muted);
        }
        .game-card-btn{
            display:inline-block;
            padding:8px 18px;
            border-radius:var(--radius-full);
            background:var(--color-primary);
            color:#fff;
            font-size:var(--font-size-xs);
            font-weight:600;
            text-align:center;
            transition:all var(--transition-fast);
            letter-spacing:0.5px;
            margin-top:auto;
        }
        .game-card-btn:hover{
            background:var(--color-primary-dark);
            box-shadow:0 4px 14px rgba(108,92,231,0.3);
        }
        .game-card.hidden-card{
            display:none;
        }

        /* ========== 无结果提示 ========== */
        .no-results{
            display:none;
            text-align:center;
            padding:var(--spacing-2xl);
            color:var(--color-text-muted);
            font-size:var(--font-size-md);
            grid-column:1/-1;
        }
        .no-results.visible{
            display:block;
        }

        /* ========== 热门排行区块 ========== */
        .ranking-section{
            background:var(--color-bg-alt);
            padding:var(--spacing-2xl) 0;
        }
        .ranking-section .section-header h2{
            color:#fff;
        }
        .ranking-section .section-subtitle{
            color:var(--color-text-muted);
        }
        .ranking-list{
            max-width:800px;
            margin:0 auto;
            padding:0 var(--spacing-lg);
            display:flex;
            flex-direction:column;
            gap:var(--spacing-sm);
        }
        .ranking-item{
            display:flex;
            align-items:center;
            gap:var(--spacing-md);
            background:rgba(255,255,255,0.04);
            border-radius:var(--radius-md);
            padding:var(--spacing-md);
            transition:all var(--transition-fast);
            border:1px solid rgba(255,255,255,0.06);
        }
        .ranking-item:hover{
            background:rgba(255,255,255,0.08);
            border-color:rgba(255,255,255,0.12);
        }
        .ranking-pos{
            width:44px;
            height:44px;
            border-radius:var(--radius-md);
            display:flex;
            align-items:center;
            justify-content:center;
            font-weight:800;
            font-size:var(--font-size-lg);
            flex-shrink:0;
            background:rgba(255,255,255,0.08);
            color:var(--color-text-muted);
        }
        .ranking-pos.top1{background:linear-gradient(135deg, #FFD93D, #f0c040);color:#333;}
        .ranking-pos.top2{background:linear-gradient(135deg, #b0bec5, #90a4ae);color:#fff;}
        .ranking-pos.top3{background:linear-gradient(135deg, #e8a87c, #d4956b);color:#fff;}
        .ranking-info{flex:1;min-width:0;}
        .ranking-title{font-weight:700;color:#fff;font-size:var(--font-size-sm);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
        .ranking-cat{font-size:var(--font-size-xs);color:var(--color-text-muted);}
        .ranking-rating{color:var(--color-accent-gold);font-weight:700;font-size:var(--font-size-sm);flex-shrink:0;}

        /* ========== 下载指南 ========== */
        .steps-section{
            background:var(--color-bg-card);
        }
        .steps-grid{
            display:grid;
            grid-template-columns:repeat(4, 1fr);
            gap:var(--spacing-md);
            padding:0 var(--spacing-lg);
        }
        .step-card{
            text-align:center;
            padding:var(--spacing-lg) var(--spacing-md);
            border-radius:var(--radius-lg);
            background:var(--color-bg);
            border:1px solid var(--color-border-light);
            transition:all var(--transition-fast);
            position:relative;
        }
        .step-card:hover{
            box-shadow:var(--color-shadow-md);
            transform:translateY(-3px);
        }
        .step-number{
            width:52px;
            height:52px;
            border-radius:50%;
            background:linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color:#fff;
            font-weight:800;
            font-size:var(--font-size-lg);
            display:flex;
            align-items:center;
            justify-content:center;
            margin:0 auto var(--spacing-md);
            box-shadow:0 6px 20px rgba(108,92,231,0.3);
        }
        .step-card h3{
            font-size:var(--font-size-md);
            margin-bottom:var(--spacing-xs);
        }
        .step-card p{
            font-size:var(--font-size-sm);
            color:var(--color-text-muted);
            line-height:1.6;
            margin:0;
        }
        .step-arrow{
            display:none;
        }

        /* ========== FAQ区块 ========== */
        .faq-section{
            background:var(--color-bg);
        }
        .faq-list{
            max-width:750px;
            margin:0 auto;
            padding:0 var(--spacing-lg);
            display:flex;
            flex-direction:column;
            gap:var(--spacing-sm);
        }
        .faq-item{
            background:var(--color-bg-card);
            border-radius:var(--radius-md);
            border:1px solid var(--color-border-light);
            overflow:hidden;
            transition:all var(--transition-fast);
        }
        .faq-item:hover{
            border-color:var(--color-primary-light);
        }
        .faq-item summary{
            padding:var(--spacing-md);
            font-weight:600;
            font-size:var(--font-size-sm);
            cursor:pointer;
            list-style:none;
            display:flex;
            align-items:center;
            justify-content:space-between;
            user-select:none;
            color:var(--color-text);
        }
        .faq-item summary::-webkit-details-marker{display:none;}
        .faq-item summary .faq-icon{
            width:28px;
            height:28px;
            border-radius:50%;
            background:var(--color-bg);
            display:flex;
            align-items:center;
            justify-content:center;
            transition:all var(--transition-fast);
            font-size:0.7rem;
            flex-shrink:0;
            color:var(--color-text-muted);
        }
        .faq-item[open] summary .faq-icon{
            transform:rotate(45deg);
            background:var(--color-primary);
            color:#fff;
        }
        .faq-item .faq-answer{
            padding:0 var(--spacing-md) var(--spacing-md);
            font-size:var(--font-size-sm);
            color:var(--color-text-light);
            line-height:1.7;
        }

        /* ========== CTA区块 ========== */
        .cta-section{
            background:linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            padding:var(--spacing-3xl) var(--spacing-lg);
            text-align:center;
            position:relative;
            overflow:hidden;
        }
        .cta-section::before{
            content:'';
            position:absolute;
            top:-80px;
            left:-80px;
            width:300px;
            height:300px;
            border-radius:50%;
            background:rgba(255,255,255,0.06);
            pointer-events:none;
        }
        .cta-section::after{
            content:'';
            position:absolute;
            bottom:-60px;
            right:-60px;
            width:240px;
            height:240px;
            border-radius:50%;
            background:rgba(255,255,255,0.04);
            pointer-events:none;
        }
        .cta-inner{
            position:relative;
            z-index:2;
            max-width:600px;
            margin:0 auto;
        }
        .cta-section h2{
            font-size:var(--font-size-2xl);
            color:#fff;
            margin-bottom:var(--spacing-sm);
        }
        .cta-section p{
            color:rgba(255,255,255,0.8);
            font-size:var(--font-size-md);
            margin-bottom:var(--spacing-lg);
        }
        .cta-btn-group{
            display:flex;
            gap:var(--spacing-md);
            justify-content:center;
            flex-wrap:wrap;
        }
        .btn-cta-primary{
            padding:14px 32px;
            border-radius:var(--radius-full);
            background:#fff;
            color:var(--color-primary);
            font-weight:700;
            font-size:var(--font-size-sm);
            letter-spacing:0.5px;
            transition:all var(--transition-fast);
            box-shadow:0 8px 28px rgba(0,0,0,0.2);
        }
        .btn-cta-primary:hover{
            transform:translateY(-2px);
            box-shadow:0 12px 36px rgba(0,0,0,0.3);
            background:#fefefe;
        }
        .btn-cta-secondary{
            padding:14px 32px;
            border-radius:var(--radius-full);
            background:transparent;
            color:#fff;
            font-weight:600;
            font-size:var(--font-size-sm);
            letter-spacing:0.5px;
            border:2px solid rgba(255,255,255,0.4);
            transition:all var(--transition-fast);
        }
        .btn-cta-secondary:hover{
            border-color:#fff;
            background:rgba(255,255,255,0.1);
        }

        /* ========== FOOTER ========== */
        .site-footer{
            background:var(--color-bg-alt);
            color:var(--color-text-on-dark);
            padding:var(--spacing-2xl) var(--spacing-lg) var(--spacing-lg);
            flex-shrink:0;
        }
        .footer-grid{
            display:grid;
            grid-template-columns:1.5fr 1fr 1fr 1fr;
            gap:var(--spacing-xl);
            max-width:1100px;
            margin:0 auto var(--spacing-xl);
        }
        .footer-brand{
            font-size:var(--font-size-lg);
            font-weight:700;
            color:#fff;
            letter-spacing:0.5px;
        }
        .footer-col h4{
            font-size:var(--font-size-sm);
            font-weight:600;
            color:#fff;
            margin-bottom:var(--spacing-sm);
            letter-spacing:0.5px;
        }
        .footer-col ul{
            display:flex;
            flex-direction:column;
            gap:6px;
        }
        .footer-col ul li a{
            font-size:var(--font-size-sm);
            color:var(--color-text-muted);
            transition:color var(--transition-fast);
        }
        .footer-col ul li a:hover{
            color:var(--color-primary-light);
        }
        .footer-bottom{
            border-top:1px solid rgba(255,255,255,0.08);
            padding-top:var(--spacing-md);
            display:flex;
            justify-content:space-between;
            flex-wrap:wrap;
            gap:var(--spacing-sm);
            font-size:var(--font-size-xs);
            color:var(--color-text-muted);
            max-width:1100px;
            margin:0 auto;
        }

        /* ========== 响应式设计 ========== */
        @media (max-width:1200px){
            .games-grid{grid-template-columns:repeat(2, 1fr);}
            .steps-grid{grid-template-columns:repeat(2, 1fr);}
        }
        @media (max-width:1024px){
            .app-sidebar{
                transform:translateX(-100%);
                box-shadow:none;
            }
            .app-sidebar.sidebar-open{
                transform:translateX(0);
                box-shadow:4px 0 32px rgba(0,0,0,0.4);
            }
            .mobile-close-sidebar{
                display:flex;
            }
            .sidebar-overlay{
                display:block;
            }
            .mobile-topbar{
                display:flex;
            }
            .main-content{
                margin-left:0;
                padding-top:var(--topbar-height);
            }
            .sidebar-footer-info{
                padding-bottom:var(--spacing-2xl);
            }
            .category-banner{
                min-height:260px;
                padding:var(--spacing-2xl) var(--spacing-md);
            }
            .banner-title{font-size:var(--font-size-2xl);}
            .banner-subtitle{font-size:var(--font-size-md);}
            .footer-grid{
                grid-template-columns:1fr 1fr;
                gap:var(--spacing-lg);
            }
        }
        @media (max-width:768px){
            .games-grid{grid-template-columns:1fr;max-width:420px;margin:0 auto;}
            .steps-grid{grid-template-columns:1fr;max-width:380px;margin:0 auto;}
            .banner-title{font-size:var(--font-size-xl);}
            .banner-subtitle{font-size:var(--font-size-sm);}
            .banner-stats{gap:var(--spacing-md);}
            .banner-stat-num{font-size:var(--font-size-xl);}
            .filter-bar{gap:6px;}
            .filter-tag{padding:8px 16px;font-size:var(--font-size-xs);}
            .section-header h2{font-size:var(--font-size-xl);}
            .ranking-item{padding:var(--spacing-sm);}
            .ranking-pos{width:36px;height:36px;font-size:var(--font-size-sm);}
            .cta-section h2{font-size:var(--font-size-xl);}
            .footer-grid{grid-template-columns:1fr;text-align:center;}
            .footer-bottom{flex-direction:column;text-align:center;justify-content:center;}
            .footer-col ul{align-items:center;}
        }
        @media (max-width:520px){
            .category-banner{min-height:220px;padding:var(--spacing-xl) var(--spacing-sm);}
            .banner-title{font-size:var(--font-size-lg);}
            .banner-search-wrap{max-width:100%;}
            .banner-search-wrap input{padding:12px 14px;}
            .banner-search-wrap button{padding:12px 16px;font-size:var(--font-size-xs);}
            .game-card-body{padding:var(--spacing-sm);}
            .cta-btn-group{flex-direction:column;align-items:center;}
        }