/* roulang page: index */
:root {
            --bg-primary: #080B1A;
            --bg-secondary: #0D1230;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --text-primary: #F8FAFC;
            --text-secondary: #B0B8C8;
            --text-muted: #7A849A;
            --accent-blue: #3B82F6;
            --accent-cyan: #22D3EE;
            --accent-violet: #8B5CF6;
            --border-light: rgba(255, 255, 255, 0.12);
            --border-glow: rgba(59, 130, 246, 0.5);
            --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.5);
            --shadow-glow-strong: 0 0 32px rgba(59, 130, 246, 0.7);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
        }

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

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

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

        ::selection {
            background: rgba(59, 130, 246, 0.4);
            color: #fff;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 4px;
            border-radius: 4px;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            color: inherit;
        }

        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 6px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-section-mobile) 0;
            }
        }

        .section-alt {
            background: var(--bg-secondary);
        }

        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            transition: all var(--transition-base);
        }
        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 24px rgba(59, 130, 246, 0.15);
            transform: translateY(-2px);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            background: linear-gradient(135deg, #3B82F6 0%, #22D3EE 100%);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(255, 255, 255, 0.2);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-3px);
            filter: brightness(1.1);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
            filter: brightness(0.95);
        }
        .btn-primary:disabled {
            background: #3a4256;
            box-shadow: none;
            cursor: not-allowed;
            transform: none;
            color: #8b96b0;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition-base);
            border: 1px solid rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(59, 130, 246, 0.5);
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.25);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
            background: rgba(255, 255, 255, 0.06);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-cyan {
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent-cyan);
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .badge-blue {
            background: rgba(59, 130, 246, 0.15);
            color: var(--accent-blue);
            border: 1px solid rgba(59, 130, 246, 0.3);
        }
        .badge-violet {
            background: rgba(139, 92, 246, 0.15);
            color: #a78bfa;
            border: 1px solid rgba(139, 92, 246, 0.3);
        }

        .section-label {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 10px;
            display: inline-block;
        }

        .section-title {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.35;
            letter-spacing: 0.01em;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 24px;
            }
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            max-width: 780px;
            margin-bottom: 32px;
        }

        .glow-border {
            border: 1px solid rgba(59, 130, 246, 0.3);
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.2), inset 0 0 20px rgba(59, 130, 246, 0.05);
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 11, 26, 0.9);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(8, 11, 26, 0.98);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 22px;
            letter-spacing: 0.03em;
        }
        .nav-logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, #3B82F6, #22D3EE, #8B5CF6);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.5);
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            flex-wrap: nowrap;
        }
        .nav-menu li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 14px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-menu li a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.07);
        }
        .nav-menu li a.active-nav {
            color: var(--text-primary);
            background: rgba(59, 130, 246, 0.15);
            border: 1px solid rgba(59, 130, 246, 0.25);
        }

        .nav-cta {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 5px 12px;
            border-radius: 50px;
            background: rgba(239, 68, 68, 0.2);
            border: 1px solid rgba(239, 68, 68, 0.4);
            font-size: 12px;
            font-weight: 700;
            color: #fca5a5;
            white-space: nowrap;
            animation: pulse-badge 2s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }

        .mobile-menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-light);
            cursor: pointer;
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-menu-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        .mobile-menu-toggle svg {
            width: 24px;
            height: 24px;
            stroke: var(--text-primary);
        }

        .mobile-nav-panel {
            display: none;
            flex-direction: column;
            background: rgba(8, 11, 26, 0.98);
            border-bottom: 1px solid var(--border-light);
            padding: 16px 0 24px;
        }
        .mobile-nav-panel.open {
            display: flex;
        }
        .mobile-nav-panel a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: all var(--transition-fast);
        }
        .mobile-nav-panel a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }
        .mobile-nav-panel a.active-nav {
            color: var(--text-primary);
            background: rgba(59, 130, 246, 0.15);
        }

        @media (max-width: 1024px) {
            .nav-menu {
                gap: 2px;
            }
            .nav-menu li a {
                padding: 10px 8px;
                font-size: 13px;
            }
            .nav-badge {
                display: none;
            }
        }
        @media (max-width: 820px) {
            .nav-menu {
                display: none;
            }
            .nav-cta .btn-primary {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
        }

        /* Hero - 白皮书获客 */
        .hero-section {
            padding: 60px 0 80px;
            position: relative;
            overflow: hidden;
            background: linear-gradient(180deg, #080B1A 0%, #0D1230 60%, #080B1A 100%);
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-bg-glow {
            position: absolute;
            top: -200px;
            right: -100px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.3) 0%, transparent 70%);
            pointer-events: none;
            z-index: 1;
        }
        .hero-bg-glow-second {
            position: absolute;
            bottom: -300px;
            left: -150px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.2) 0%, transparent 70%);
            pointer-events: none;
            z-index: 1;
        }

        .hero-h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.01em;
            margin-bottom: 20px;
            color: #fff;
            text-shadow: 0 0 40px rgba(59, 130, 246, 0.3);
        }
        .hero-desc {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 500px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-cover {
            width: 100%;
            max-width: 420px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5), 0 0 40px rgba(59, 130, 246, 0.2);
            border: 1px solid var(--border-light);
            background: var(--bg-secondary);
            position: relative;
        }
        .hero-cover img {
            width: 100%;
            aspect-ratio: 3/4;
            object-fit: cover;
        }
        .hero-cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 11, 26, 0.2) 0%, rgba(8, 11, 26, 0.9) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 24px;
        }
        .hero-cover-overlay h3 {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .hero-cover-overlay p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 32px 0 56px;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-h1 {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 16px;
            }
            .hero-actions {
                gap: 12px;
            }
            .hero-cover {
                max-width: 100%;
            }
        }

        /* KPI 看板 */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .kpi-card {
            text-align: center;
            padding: 24px 20px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(10px);
            transition: all var(--transition-base);
        }
        .kpi-card:hover {
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
            transform: translateY(-2px);
        }
        .kpi-number {
            font-size: 36px;
            font-weight: 800;
            background: linear-gradient(135deg, #fff, #93C5FD);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .kpi-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
        }
        @media (max-width: 768px) {
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .kpi-number {
                font-size: 28px;
            }
        }

        /* 服务矩阵 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .service-card {
            padding: 28px 24px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(14px);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .service-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .service-card:hover::after {
            opacity: 1;
        }
        .service-card:hover {
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 0 24px rgba(59, 130, 246, 0.2);
            transform: translateY(-3px);
        }
        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(59, 130, 246, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--accent-blue);
        }
        .service-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .service-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        @media (max-width: 768px) {
            .service-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* 结果对比 */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .comparison-card {
            padding: 28px 26px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            transition: all var(--transition-base);
        }
        .comparison-card:hover {
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: 0 0 18px rgba(59, 130, 246, 0.15);
        }
        .comparison-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-light);
        }
        .comparison-title {
            font-size: 18px;
            font-weight: 700;
        }
        .comparison-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .comparison-list li .icon-check {
            color: #34D399;
            font-weight: 800;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .comparison-list li .icon-x {
            color: #F87171;
            font-weight: 800;
            flex-shrink: 0;
            margin-top: 2px;
        }
        @media (max-width: 768px) {
            .comparison-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* 流程步骤 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .step-card {
            padding: 26px 22px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            position: relative;
            transition: all var(--transition-base);
            text-align: center;
        }
        .step-card:hover {
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.15);
            transform: translateY(-3px);
        }
        .step-number {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, #3B82F6, #22D3EE);
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.4);
        }
        .step-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        @media (max-width: 768px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* 成果数据 */
        .result-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .result-card {
            padding: 24px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            transition: all var(--transition-base);
            text-align: center;
        }
        .result-card:hover {
            border-color: rgba(139, 92, 246, 0.4);
            box-shadow: 0 0 20px rgba(139, 92, 246, 0.2);
            transform: translateY(-2px);
        }
        .result-value {
            font-size: 42px;
            font-weight: 800;
            background: linear-gradient(135deg, #C4B5FD, #8B5CF6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .result-label {
            font-size: 15px;
            color: var(--text-secondary);
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .result-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .result-value {
                font-size: 32px;
            }
        }

        /* 玩家评价 */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .testimonial-card {
            padding: 26px 24px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .testimonial-card:hover {
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: 0 0 18px rgba(59, 130, 246, 0.15);
            transform: translateY(-2px);
        }
        .testimonial-quote {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            flex-grow: 1;
            font-style: normal;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }
        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, #3B82F6, #8B5CF6);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
            font-size: 16px;
            flex-shrink: 0;
        }
        .testimonial-name {
            font-size: 14px;
            font-weight: 700;
        }
        .testimonial-role {
            font-size: 13px;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* 适用人群 */
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .audience-card {
            padding: 22px 20px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            text-align: center;
            transition: all var(--transition-base);
        }
        .audience-card:hover {
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.15);
            transform: translateY(-2px);
        }
        .audience-icon {
            font-size: 32px;
            margin-bottom: 10px;
            display: block;
        }
        .audience-name {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .audience-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .audience-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
        }

        /* 品牌介绍 */
        .brand-section {
            background: linear-gradient(135deg, #0D1230 0%, #151B3A 100%);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            position: relative;
            overflow: hidden;
        }
        .brand-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }
        .brand-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -80px;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }
        .brand-section h3 {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 16px;
            position: relative;
            z-index: 2;
        }
        .brand-section p {
            font-size: 16px;
            line-height: 2;
            color: var(--text-secondary);
            position: relative;
            z-index: 2;
            max-width: 900px;
        }
        @media (max-width: 768px) {
            .brand-section {
                padding: 28px 20px;
                border-radius: var(--radius-md);
            }
            .brand-section h3 {
                font-size: 20px;
            }
            .brand-section p {
                font-size: 15px;
                line-height: 1.9;
            }
        }

        /* 里程碑 */
        .milestone-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            position: relative;
            padding-left: 40px;
        }
        .milestone-list::before {
            content: '';
            position: absolute;
            left: 16px;
            top: 12px;
            bottom: 12px;
            width: 2px;
            background: linear-gradient(180deg, #3B82F6, #22D3EE, #8B5CF6);
            border-radius: 2px;
        }
        .milestone-item {
            position: relative;
            padding: 18px 24px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            transition: all var(--transition-base);
        }
        .milestone-item:hover {
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 0 18px rgba(59, 130, 246, 0.15);
            transform: translateX(4px);
        }
        .milestone-item::before {
            content: '';
            position: absolute;
            left: -30px;
            top: 27px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-blue);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.6);
            border: 2px solid #080B1A;
        }
        .milestone-date {
            font-size: 13px;
            font-weight: 700;
            color: var(--accent-cyan);
            letter-spacing: 0.06em;
            margin-bottom: 6px;
        }
        .milestone-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .milestone-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .milestone-list {
                padding-left: 28px;
            }
            .milestone-list::before {
                left: 10px;
            }
            .milestone-item::before {
                left: -23px;
                width: 10px;
                height: 10px;
            }
        }

        /* 资讯卡片 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .news-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            transition: all var(--transition-base);
        }
        .news-card:hover {
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 0 24px rgba(59, 130, 246, 0.2);
            transform: translateY(-3px);
        }
        .news-image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .news-body {
            padding: 20px;
        }
        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
            font-weight: 600;
        }
        .news-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.5;
            color: var(--text-primary);
        }
        .news-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-link {
            display: inline-block;
            margin-top: 12px;
            font-size: 14px;
            font-weight: 700;
            color: var(--accent-cyan);
            transition: color var(--transition-fast);
        }
        .news-link:hover {
            color: #fff;
        }
        @media (max-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* 平台保障 */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .security-card {
            padding: 26px 22px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            text-align: center;
            transition: all var(--transition-base);
        }
        .security-card:hover {
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.15);
            transform: translateY(-2px);
        }
        .security-icon {
            font-size: 36px;
            margin-bottom: 10px;
            display: block;
        }
        .security-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .security-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .security-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* 专题推荐 */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .topic-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .topic-card:hover {
            border-color: rgba(139, 92, 246, 0.4);
            box-shadow: 0 0 20px rgba(139, 92, 246, 0.2);
            transform: translateY(-3px);
        }
        .topic-image {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .topic-body {
            padding: 16px 18px;
        }
        .topic-name {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .topic-count {
            font-size: 13px;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .topic-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
        }

        /* CTA 转化板块 */
        .cta-banner {
            padding: 52px 44px;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, #0D1230 0%, #1a1f45 50%, #0D1230 100%);
            border: 1px solid var(--border-light);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -150px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 400px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.3) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-banner h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }
        .cta-banner p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            position: relative;
            z-index: 2;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }
        .cta-banner .btn-primary {
            position: relative;
            z-index: 2;
        }
        @media (max-width: 768px) {
            .cta-banner {
                padding: 32px 20px;
                border-radius: var(--radius-md);
            }
            .cta-banner h3 {
                font-size: 22px;
            }
        }

        /* 分类导航 */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        .category-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            transition: all var(--transition-base);
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px 20px;
            cursor: pointer;
        }
        .category-card:hover {
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 0 18px rgba(59, 130, 246, 0.2);
            transform: translateY(-2px);
        }
        .category-thumb {
            width: 56px;
            height: 56px;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .category-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .category-info {
            flex-grow: 1;
        }
        .category-name {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 2px;
        }
        .category-desc {
            font-size: 13px;
            color: var(--text-muted);
        }
        .category-arrow {
            font-size: 20px;
            color: var(--accent-cyan);
            font-weight: 800;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }
        .category-card:hover .category-arrow {
            transform: translateX(4px);
        }
        @media (max-width: 768px) {
            .category-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 800px;
        }
        .faq-item {
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: rgba(34, 211, 238, 0.35);
        }
        .faq-item summary {
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 700;
            font-size: 16px;
            color: var(--text-primary);
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: background var(--transition-fast);
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            background: rgba(255, 255, 255, 0.04);
        }
        .faq-item summary::after {
            content: '+';
            font-size: 22px;
            font-weight: 700;
            color: var(--accent-cyan);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            content: '−';
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 22px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* Footer */
        .site-footer {
            background: #050710;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 48px 0 28px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand-text {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .footer-links-title {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
            letter-spacing: 0.03em;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 22px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-bottom-links a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: var(--text-secondary);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        /* Form styles */
        .dark-input {
            width: 100%;
            padding: 14px 18px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-primary);
            font-size: 15px;
            transition: all var(--transition-fast);
        }
        .dark-input::placeholder {
            color: var(--text-muted);
        }
        .dark-input:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
            outline: none;
        }
        .form-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 6px;
            display: block;
        }
        .form-group {
            margin-bottom: 16px;
        }

        /* 资源下载墙 */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .resource-card {
            padding: 22px 18px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            text-align: center;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .resource-card:hover {
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.15);
            transform: translateY(-3px);
        }
        .resource-icon {
            font-size: 32px;
            margin-bottom: 10px;
            display: block;
        }
        .resource-name {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .resource-size {
            font-size: 13px;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .resource-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
        }

        /* 数据指标 */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            padding: 24px 20px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            text-align: center;
            transition: all var(--transition-base);
        }
        .metric-card:hover {
            border-color: rgba(139, 92, 246, 0.4);
            box-shadow: 0 0 18px rgba(139, 92, 246, 0.15);
            transform: translateY(-2px);
        }
        .metric-value {
            font-size: 32px;
            font-weight: 800;
            background: linear-gradient(135deg, #6EE7B7, #34D399);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .metric-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .metric-value {
                font-size: 26px;
            }
        }

        /* 误区澄清 */
        .myth-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
        }
        .myth-card {
            padding: 22px 24px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(12px);
            transition: all var(--transition-base);
        }
        .myth-card:hover {
            border-color: rgba(239, 68, 68, 0.35);
            box-shadow: 0 0 18px rgba(239, 68, 68, 0.1);
        }
        .myth-title {
            font-size: 16px;
            font-weight: 700;
            color: #FCA5A5;
            margin-bottom: 6px;
        }
        .myth-correct {
            font-size: 15px;
            font-weight: 600;
            color: #6EE7B7;
            margin-bottom: 8px;
        }
        .myth-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .myth-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #080B1A;
            --bg-secondary: #0D1230;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --text-primary: #F8FAFC;
            --text-secondary: #B0B8C8;
            --text-muted: #7A849A;
            --accent-blue: #3B82F6;
            --accent-cyan: #22D3EE;
            --accent-violet: #8B5CF6;
            --border-light: rgba(255, 255, 255, 0.12);
            --border-glow: rgba(59, 130, 246, 0.5);
            --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.5);
            --shadow-glow-strong: 0 0 32px rgba(59, 130, 246, 0.7);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
        }

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

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

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-cyan);
        }
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 4px;
            border-radius: 4px;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            color: inherit;
        }
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 6px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

        .section-alt {
            background: var(--bg-secondary);
        }

        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            transition: all var(--transition-base);
        }
        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 24px rgba(59, 130, 246, 0.15);
            transform: translateY(-2px);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            background: linear-gradient(135deg, #3B82F6 0%, #22D3EE 100%);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(255, 255, 255, 0.2);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-3px);
            filter: brightness(1.1);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
            filter: brightness(0.95);
        }
        .btn-primary:disabled {
            background: #3a4256;
            box-shadow: none;
            cursor: not-allowed;
            transform: none;
            color: #8b96b0;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition-base);
            border: 1px solid rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(59, 130, 246, 0.5);
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.25);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
            background: rgba(255, 255, 255, 0.06);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-cyan {
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent-cyan);
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .badge-blue {
            background: rgba(59, 130, 246, 0.15);
            color: var(--accent-blue);
            border: 1px solid rgba(59, 130, 246, 0.3);
        }
        .badge-violet {
            background: rgba(139, 92, 246, 0.15);
            color: var(--accent-violet);
            border: 1px solid rgba(139, 92, 246, 0.3);
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 11, 26, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding: 14px 24px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 22px;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            white-space: nowrap;
        }
        .nav-logo:hover {
            color: var(--text-primary);
        }
        .nav-logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.45);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-menu a {
            display: inline-block;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-menu a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-menu a.active-nav {
            color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.3);
            font-weight: 600;
        }
        .nav-cta {
            padding: 10px 22px;
            font-size: 14px;
        }
        .mobile-menu-toggle {
            display: none;
            font-size: 28px;
            color: var(--text-primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-light);
            line-height: 1;
        }

        /* Hero */
        .category-hero {
            padding: 56px 0 48px;
            background: linear-gradient(180deg, #0D1230 0%, #080B1A 100%);
            border-bottom: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -120px;
            left: -60px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        .breadcrumb .separator {
            opacity: 0.5;
        }
        .breadcrumb .current {
            color: var(--accent-cyan);
            font-weight: 600;
        }
        .category-hero h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
            letter-spacing: 0.01em;
        }
        .category-hero .hero-sub {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }
        .hero-tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
            position: relative;
            z-index: 1;
        }
        .hero-tag-row .badge {
            font-size: 13px;
            cursor: default;
        }

        /* Guide list */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 20px rgba(59, 130, 246, 0.2);
            transform: translateY(-3px);
        }
        .guide-card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }
        .guide-card-body {
            padding: 20px 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .guide-card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
            flex: 1;
        }
        .guide-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .guide-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-cyan);
            transition: color var(--transition-fast);
            cursor: pointer;
        }
        .guide-card-link:hover {
            color: #fff;
        }
        .guide-card-meta {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Editor picks */
        .editor-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }
        .editor-card {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .editor-card:hover {
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            transform: translateY(-2px);
        }
        .editor-card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }
        .editor-card-body {
            padding: 12px 14px 14px;
        }
        .editor-card-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* Tag cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-light);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .tag-chip:hover {
            background: rgba(59, 130, 246, 0.15);
            border-color: rgba(59, 130, 246, 0.5);
            color: var(--accent-cyan);
            box-shadow: 0 0 14px rgba(59, 130, 246, 0.25);
            transform: translateY(-2px);
        }

        /* Stats */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }
        .stat-item:hover {
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 0 24px rgba(59, 130, 246, 0.15);
        }
        .stat-number {
            font-size: 40px;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
            margin-bottom: 8px;
            text-shadow: 0 0 24px rgba(34, 211, 238, 0.4);
        }
        .stat-label {
            font-size: 15px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.3);
        }
        .faq-item summary {
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: color var(--transition-fast);
        }
        .faq-item summary:hover {
            color: var(--accent-cyan);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--text-muted);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
            color: var(--accent-cyan);
        }
        .faq-answer {
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* CTA */
        .cta-box {
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(34, 211, 238, 0.1) 100%);
            border: 1px solid rgba(59, 130, 246, 0.35);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: all var(--transition-base);
        }
        .cta-box:hover {
            border-color: rgba(59, 130, 246, 0.6);
            box-shadow: 0 0 40px rgba(59, 130, 246, 0.25);
        }
        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }

        /* Section title */
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.4;
            letter-spacing: 0.01em;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 720px;
        }
        .section-head {
            margin-bottom: 36px;
        }

        /* Footer */
        .site-footer {
            background: #060915;
            border-top: 1px solid var(--border-light);
            padding: 56px 0 32px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .footer-brand-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 360px;
        }
        .footer-links-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 4px;
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .footer-bottom-links a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: var(--accent-cyan);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .editor-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-menu {
                gap: 2px;
            }
            .nav-menu a {
                padding: 7px 10px;
                font-size: 14px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-section-mobile) 0;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 10px 16px;
                gap: 12px;
            }
            .nav-logo {
                font-size: 18px;
            }
            .nav-logo-mark {
                width: 34px;
                height: 34px;
                font-size: 16px;
                border-radius: 8px;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(8, 11, 26, 0.98);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 12px 16px;
                font-size: 16px;
                display: block;
            }
            .mobile-menu-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .nav-cta {
                display: none;
            }
            .category-hero {
                padding: 36px 0 32px;
            }
            .category-hero h1 {
                font-size: 26px;
                line-height: 1.4;
            }
            .category-hero .hero-sub {
                font-size: 15px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .editor-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 30px;
            }
            .section-title {
                font-size: 22px;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .cta-box h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .btn-primary {
                padding: 12px 24px;
                font-size: 15px;
            }
            .btn-secondary {
                padding: 11px 20px;
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .editor-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr;
            }
            .stat-number {
                font-size: 28px;
            }
            .guide-card-title {
                font-size: 15px;
            }
            .guide-card-desc {
                font-size: 13px;
            }
            .tag-chip {
                padding: 8px 16px;
                font-size: 13px;
            }
            .breadcrumb {
                font-size: 12px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #080B1A;
            --bg-secondary: #0D1230;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --text-primary: #F8FAFC;
            --text-secondary: #B0B8C8;
            --text-muted: #7A849A;
            --accent-blue: #3B82F6;
            --accent-cyan: #22D3EE;
            --accent-violet: #8B5CF6;
            --border-light: rgba(255, 255, 255, 0.12);
            --border-glow: rgba(59, 130, 246, 0.5);
            --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.5);
            --shadow-glow-strong: 0 0 32px rgba(59, 130, 246, 0.7);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
        }
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 4px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            color: inherit;
        }
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 6px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            transition: all var(--transition-base);
        }
        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 24px rgba(59, 130, 246, 0.15);
            transform: translateY(-2px);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            background: linear-gradient(135deg, #3B82F6 0%, #22D3EE 100%);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(255, 255, 255, 0.2);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-3px);
            filter: brightness(1.1);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
            filter: brightness(0.95);
        }
        .btn-primary:disabled {
            background: #3a4256;
            box-shadow: none;
            cursor: not-allowed;
            transform: none;
            color: #8b96b0;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition-base);
            border: 1px solid rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(59, 130, 246, 0.5);
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.25);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
            background: rgba(255, 255, 255, 0.06);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-cyan {
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent-cyan);
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .badge-blue {
            background: rgba(59, 130, 246, 0.15);
            color: var(--accent-blue);
            border: 1px solid rgba(59, 130, 246, 0.3);
        }
        .badge-violet {
            background: rgba(139, 92, 246, 0.15);
            color: var(--accent-violet);
            border: 1px solid rgba(139, 92, 246, 0.3);
        }
        .badge-gold {
            background: rgba(251, 191, 36, 0.15);
            color: #FBBF24;
            border: 1px solid rgba(251, 191, 36, 0.3);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 11, 26, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 0 0;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 22px;
            letter-spacing: 0.04em;
            color: var(--text-primary);
            white-space: nowrap;
        }
        .nav-logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, #3B82F6, #22D3EE);
            color: #fff;
            font-size: 18px;
            font-weight: 900;
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.6);
            flex-shrink: 0;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu a {
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-menu a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-menu a.active-nav {
            color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.1);
            box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.25);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 50px;
            background: linear-gradient(135deg, #3B82F6, #22D3EE);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.4);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .nav-cta:hover {
            box-shadow: 0 0 24px rgba(59, 130, 246, 0.65);
            transform: translateY(-2px);
            color: #fff;
        }
        .nav-badge {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            border-radius: 50px;
            font-size: 11px;
            font-weight: 700;
            background: rgba(251, 191, 36, 0.2);
            color: #FBBF24;
            border: 1px solid rgba(251, 191, 36, 0.35);
            margin-left: 6px;
            animation: pulse-badge 2.4s ease-in-out infinite;
            white-space: nowrap;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.6;
            }
        }
        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            cursor: pointer;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .mobile-menu-btn span {
            width: 20px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .mobile-nav-panel {
            display: none;
            background: rgba(8, 11, 26, 0.98);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 12px 0;
        }
        .mobile-nav-panel.open {
            display: block;
        }
        .mobile-nav-panel ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .mobile-nav-panel a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .mobile-nav-panel a.active-nav {
            color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.06);
        }
        .mobile-nav-panel a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }

        .category-hero {
            position: relative;
            padding: 56px 0 48px;
            background: linear-gradient(180deg, #0D1230 0%, #080B1A 100%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.12);
            filter: blur(60px);
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 10%;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.08);
            filter: blur(50px);
            pointer-events: none;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        .breadcrumb-sep {
            opacity: 0.5;
        }
        .category-hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .category-hero-text {
            flex: 1 1 600px;
            max-width: 720px;
        }
        .category-hero-text h1 {
            font-size: 36px;
            font-weight: 900;
            letter-spacing: 0.02em;
            line-height: 1.25;
            margin: 0 0 12px;
            color: var(--text-primary);
        }
        .category-hero-text .hero-sub {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 620px;
            margin: 0;
        }
        .category-hero-stats {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-shrink: 0;
            padding: 16px 24px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .stat-num {
            font-size: 24px;
            font-weight: 900;
            color: var(--accent-cyan);
            letter-spacing: 0.02em;
        }
        .hero-stat-item .stat-label {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 2px;
        }
        .hero-stat-divider {
            width: 1px;
            height: 40px;
            background: rgba(255, 255, 255, 0.12);
        }

        .review-card {
            overflow: hidden;
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }
        .review-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .review-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .review-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .review-card .score-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 15px;
            color: #fff;
            background: linear-gradient(135deg, #3B82F6, #22D3EE);
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.7);
            border: 2px solid rgba(255, 255, 255, 0.3);
            letter-spacing: -0.03em;
        }
        .review-card .card-body {
            padding: 18px 20px 20px;
        }
        .review-card .card-category {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-cyan);
            letter-spacing: 0.06em;
            margin-bottom: 6px;
            text-transform: uppercase;
        }
        .review-card .card-title {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.45;
            margin: 0 0 8px;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .review-card .card-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }
        .review-card .card-footer-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .review-card .card-meta {
            font-size: 12px;
            color: var(--text-muted);
        }
        .review-card .card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-cyan);
            transition: color var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .review-card .card-link:hover {
            color: #67E8F9;
        }

        .editor-pick-card {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 18px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-base);
        }
        .editor-pick-card:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(59, 130, 246, 0.3);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
            transform: translateX(4px);
        }
        .editor-pick-card .pick-img {
            width: 72px;
            height: 72px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .editor-pick-card .pick-num {
            font-size: 24px;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.15);
            flex-shrink: 0;
            width: 32px;
            text-align: center;
            letter-spacing: -0.04em;
        }
        .editor-pick-card .pick-body {
            flex: 1;
            min-width: 0;
        }
        .editor-pick-card .pick-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .editor-pick-card .pick-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }
        .editor-pick-card .pick-tag {
            display: inline-flex;
            align-items: center;
            padding: 2px 10px;
            border-radius: 50px;
            font-size: 11px;
            font-weight: 600;
            background: rgba(139, 92, 246, 0.15);
            color: var(--accent-violet);
            border: 1px solid rgba(139, 92, 246, 0.3);
            margin-top: 6px;
        }

        .tag-pill {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition-base);
            cursor: pointer;
            white-space: nowrap;
        }
        .tag-pill:hover {
            background: rgba(59, 130, 246, 0.12);
            border-color: rgba(59, 130, 246, 0.4);
            color: var(--accent-cyan);
            box-shadow: 0 4px 14px rgba(59, 130, 246, 0.18);
            transform: translateY(-2px);
        }

        .stat-bar-card {
            padding: 26px 24px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            transition: all var(--transition-base);
        }
        .stat-bar-card:hover {
            border-color: rgba(59, 130, 246, 0.3);
            background: rgba(255, 255, 255, 0.06);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
        }
        .stat-bar-card .stat-icon {
            font-size: 28px;
            margin-bottom: 10px;
            display: block;
        }
        .stat-bar-card .stat-value {
            font-size: 32px;
            font-weight: 900;
            color: var(--accent-cyan);
            letter-spacing: 0.02em;
            line-height: 1.2;
        }
        .stat-bar-card .stat-name {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        .faq-item {
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item.active {
            border-color: rgba(59, 130, 246, 0.35);
            background: rgba(59, 130, 246, 0.06);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-primary);
            user-select: none;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            font-size: 16px;
            font-weight: 400;
            color: var(--text-secondary);
            transition: all var(--transition-base);
        }
        .faq-item.active .faq-icon {
            background: rgba(59, 130, 246, 0.25);
            color: var(--accent-cyan);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .cta-banner {
            position: relative;
            padding: 48px 40px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(139, 92, 246, 0.15) 50%, rgba(34, 211, 238, 0.12) 100%);
            border: 1px solid rgba(59, 130, 246, 0.3);
            box-shadow: 0 20px 48px rgba(0, 0, 0, 0.35), 0 0 40px rgba(59, 130, 246, 0.15);
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.15);
            filter: blur(50px);
            pointer-events: none;
        }
        .cta-banner-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .cta-banner-text h3 {
            font-size: 24px;
            font-weight: 800;
            margin: 0 0 8px;
            color: var(--text-primary);
        }
        .cta-banner-text p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
            max-width: 480px;
            line-height: 1.7;
        }

        .site-footer {
            background: #060915;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .footer-brand-text {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 340px;
            margin: 0;
        }
        .footer-links-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            flex-wrap: wrap;
        }
        .footer-bottom p {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0 0 4px;
            line-height: 1.6;
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-bottom-links a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: var(--accent-cyan);
        }

        .section-title {
            font-size: 26px;
            font-weight: 800;
            letter-spacing: 0.02em;
            line-height: 1.35;
            margin: 0 0 10px;
            color: var(--text-primary);
        }
        .section-sub {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 32px;
            max-width: 600px;
        }
        .section-header-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }
        .section-header-row .section-title {
            margin-bottom: 0;
        }
        .more-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .more-link:hover {
            color: #67E8F9;
            transform: translateX(3px);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .nav-menu a {
                padding: 8px 12px;
                font-size: 14px;
            }
            .nav-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
            .category-hero-stats {
                gap: 18px;
                padding: 14px 18px;
            }
            .hero-stat-item .stat-num {
                font-size: 20px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-section-mobile) 0;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                height: 60px;
                gap: 12px;
            }
            .nav-brand {
                font-size: 18px;
            }
            .nav-logo-mark {
                width: 32px;
                height: 32px;
                font-size: 15px;
                border-radius: 8px;
            }
            .nav-menu {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .mobile-nav-panel.open {
                display: block;
            }
            .category-hero {
                padding: 32px 0 36px;
            }
            .category-hero-content {
                flex-direction: column;
            }
            .category-hero-stats {
                width: 100%;
                justify-content: space-around;
            }
            .category-hero-text h1 {
                font-size: 26px;
            }
            .category-hero-text .hero-sub {
                font-size: 14px;
            }
            .section-title {
                font-size: 21px;
            }
            .section-header-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .cta-banner {
                padding: 32px 24px;
            }
            .cta-banner-inner {
                flex-direction: column;
                text-align: center;
            }
            .cta-banner-text p {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 12px;
            }
            .footer-bottom-links {
                flex-wrap: wrap;
                justify-content: center;
            }
            .editor-pick-card {
                flex-direction: row;
                align-items: flex-start;
            }
            .editor-pick-card .pick-img {
                width: 56px;
                height: 56px;
            }
            .editor-pick-card .pick-num {
                font-size: 18px;
                width: 24px;
            }
        }

        @media (max-width: 520px) {
            .category-hero-text h1 {
                font-size: 22px;
                line-height: 1.3;
            }
            .hero-stat-item .stat-num {
                font-size: 18px;
            }
            .hero-stat-divider {
                height: 28px;
            }
            .stat-bar-card .stat-value {
                font-size: 24px;
            }
            .btn-primary {
                padding: 12px 24px;
                font-size: 14px;
            }
            .btn-secondary {
                padding: 11px 20px;
                font-size: 13px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-answer-inner {
                padding: 0 16px 16px;
                font-size: 13px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #080B1A;
            --bg-secondary: #0D1230;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --text-primary: #F8FAFC;
            --text-secondary: #B0B8C8;
            --text-muted: #7A849A;
            --accent-blue: #3B82F6;
            --accent-cyan: #22D3EE;
            --accent-violet: #8B5CF6;
            --border-light: rgba(255, 255, 255, 0.12);
            --border-glow: rgba(59, 130, 246, 0.5);
            --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.5);
            --shadow-glow-strong: 0 0 32px rgba(59, 130, 246, 0.7);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
        }
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 4px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            color: inherit;
        }
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 6px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        .section-alt {
            background: var(--bg-secondary);
        }
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            transition: all var(--transition-base);
        }
        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 24px rgba(59, 130, 246, 0.15);
            transform: translateY(-2px);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            background: linear-gradient(135deg, #3B82F6 0%, #22D3EE 100%);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(255, 255, 255, 0.2);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-3px);
            filter: brightness(1.1);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
            filter: brightness(0.95);
        }
        .btn-primary:disabled {
            background: #3a4256;
            box-shadow: none;
            cursor: not-allowed;
            transform: none;
            color: #8b96b0;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition-base);
            border: 1px solid rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(59, 130, 246, 0.5);
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.25);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
            background: rgba(255, 255, 255, 0.06);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-cyan {
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent-cyan);
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .badge-blue {
            background: rgba(59, 130, 246, 0.15);
            color: var(--accent-blue);
            border: 1px solid rgba(59, 130, 246, 0.3);
        }
        .badge-violet {
            background: rgba(139, 92, 246, 0.15);
            color: var(--accent-violet);
            border: 1px solid rgba(139, 92, 246, 0.3);
        }

        /* 导航样式 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 11, 26, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 14px 24px;
            max-width: 1200px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            letter-spacing: 0.03em;
            white-space: nowrap;
            color: var(--text-primary);
        }
        .nav-logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 10px;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.55);
            flex-shrink: 0;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-menu a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-menu a.active-nav {
            color: #fff;
            background: rgba(59, 130, 246, 0.22);
            border: 1px solid rgba(59, 130, 246, 0.4);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.2);
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            background: rgba(34, 211, 238, 0.12);
            color: var(--accent-cyan);
            border: 1px solid rgba(34, 211, 238, 0.25);
            white-space: nowrap;
        }
        .nav-status-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent-cyan);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.7);
            animation: pulse-dot 1.8s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(0.8);
            }
        }
        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .mobile-menu-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* 分类Hero样式 */
        .cat-hero {
            position: relative;
            background: linear-gradient(180deg, #0B1027 0%, #0D1230 100%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            overflow: hidden;
            padding: 48px 0 40px;
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }
        .cat-hero::after {
            content: '';
            position: absolute;
            bottom: -120px;
            left: -60px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .breadcrumb {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        .breadcrumb-sep {
            color: var(--text-muted);
            opacity: 0.6;
        }
        .breadcrumb-current {
            color: var(--accent-cyan);
            font-weight: 600;
        }
        .cat-hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
        }
        .cat-hero-text {
            flex: 1 1 520px;
            max-width: 680px;
        }
        .cat-hero h1 {
            font-size: 32px;
            font-weight: 900;
            letter-spacing: 0.02em;
            line-height: 1.3;
            margin: 0 0 12px 0;
            color: var(--text-primary);
        }
        .cat-hero-sub {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 560px;
            margin: 0;
        }
        .cat-hero-side {
            flex-shrink: 0;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 14px;
        }
        .countdown-ring {
            position: relative;
            width: 92px;
            height: 92px;
            border-radius: 50%;
            background: conic-gradient(var(--accent-cyan) 0deg 70deg, rgba(255, 255, 255, 0.08) 70deg 360deg);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 24px rgba(34, 211, 238, 0.3);
        }
        .countdown-ring::after {
            content: '';
            position: absolute;
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: #0B1027;
        }
        .countdown-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            font-weight: 800;
            font-size: 22px;
            color: var(--accent-cyan);
            line-height: 1.2;
        }
        .countdown-inner small {
            display: block;
            font-size: 10px;
            font-weight: 600;
            color: var(--text-muted);
            letter-spacing: 0.05em;
        }
        .hero-sell-points {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: flex-end;
        }
        .hero-sell-point {
            font-size: 12px;
            font-weight: 600;
            padding: 6px 12px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
            white-space: nowrap;
        }

        /* 资讯列表卡片 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .news-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4), 0 0 22px rgba(59, 130, 246, 0.18);
            transform: translateY(-3px);
        }
        .news-card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #0D1230;
        }
        .news-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }
        .news-card:hover .news-card-cover img {
            transform: scale(1.04);
        }
        .news-card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(8, 11, 26, 0.4) 100%);
            pointer-events: none;
        }
        .news-card-tag {
            position: absolute;
            top: 10px;
            left: 10px;
            z-index: 2;
            display: inline-flex;
            padding: 4px 10px;
            border-radius: 50px;
            font-size: 11px;
            font-weight: 700;
            background: rgba(8, 11, 26, 0.78);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--accent-cyan);
            letter-spacing: 0.03em;
        }
        .news-card-body {
            padding: 18px 18px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .news-card-meta-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--text-muted);
            flex-shrink: 0;
        }
        .news-card-title {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--text-primary);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 48px;
        }
        .news-card-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
            flex: 1;
        }
        .news-card-link {
            align-self: flex-start;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-fast);
        }
        .news-card-link:hover {
            color: #fff;
            gap: 10px;
        }
        .news-card-link svg {
            width: 14px;
            height: 14px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2.5;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        /* 编辑推荐 */
        .featured-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }
        .featured-item {
            display: flex;
            gap: 16px;
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 14px;
            transition: all var(--transition-base);
            align-items: center;
        }
        .featured-item:hover {
            background: var(--bg-card-hover);
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35), 0 0 16px rgba(34, 211, 238, 0.12);
            transform: translateY(-2px);
        }
        .featured-thumb {
            width: 100px;
            height: 64px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: #0D1230;
        }
        .featured-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .featured-info {
            flex: 1;
            min-width: 0;
        }
        .featured-info-top {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 4px;
            flex-wrap: wrap;
        }
        .featured-label {
            font-size: 11px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 50px;
            background: rgba(139, 92, 246, 0.15);
            color: var(--accent-violet);
            border: 1px solid rgba(139, 92, 246, 0.3);
            white-space: nowrap;
        }
        .featured-category {
            font-size: 11px;
            color: var(--text-muted);
            font-weight: 600;
        }
        .featured-title {
            font-size: 14px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .featured-title a:hover {
            color: var(--accent-cyan);
        }

        /* 标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-light);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }
        .tag-cloud a::before {
            content: '#';
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 13px;
        }
        .tag-cloud a:hover {
            background: rgba(59, 130, 246, 0.15);
            border-color: rgba(59, 130, 246, 0.4);
            color: #fff;
            box-shadow: 0 0 14px rgba(59, 130, 246, 0.2);
            transform: translateY(-2px);
        }

        /* 数据统计 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .stat-card {
            text-align: center;
            padding: 26px 18px;
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(139, 92, 246, 0.35);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3), 0 0 18px rgba(139, 92, 246, 0.15);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 36px;
            font-weight: 900;
            line-height: 1.2;
            background: linear-gradient(135deg, #3B82F6 0%, #22D3EE 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 6px;
            letter-spacing: 0.01em;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .stat-desc {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 700;
            font-size: 15px;
            color: var(--text-primary);
            transition: all var(--transition-fast);
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent-cyan);
            font-size: 14px;
            font-weight: 700;
            transition: transform var(--transition-fast);
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
            border-top: 1px dashed rgba(255, 255, 255, 0.08);
            padding-top: 14px;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA订阅区 */
        .cta-section {
            background: linear-gradient(135deg, #0B1027 0%, #1A1150 50%, #0D1230 100%);
            border: 1px solid rgba(59, 130, 246, 0.25);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4), 0 0 32px rgba(59, 130, 246, 0.12);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 300px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section h2 {
            position: relative;
            z-index: 2;
            font-size: 26px;
            font-weight: 800;
            margin: 0 0 12px 0;
            line-height: 1.4;
        }
        .cta-section p {
            position: relative;
            z-index: 2;
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }
        .cta-actions {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .subscribe-input-group {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 50px;
            padding: 5px 6px 5px 20px;
            transition: border-color var(--transition-fast);
            max-width: 380px;
            width: 100%;
        }
        .subscribe-input-group:focus-within {
            border-color: rgba(59, 130, 246, 0.5);
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.22);
        }
        .subscribe-input-group input {
            flex: 1;
            background: none;
            border: none;
            outline: none;
            color: var(--text-primary);
            font-size: 14px;
            padding: 8px 0;
            min-width: 0;
        }
        .subscribe-input-group input::placeholder {
            color: var(--text-muted);
            font-size: 14px;
        }

        /* 页脚 */
        .site-footer {
            background: #060812;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 52px 0 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 18px;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .footer-brand-text {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 320px;
            margin: 0;
        }
        .footer-links-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.9;
        }
        .footer-bottom p {
            margin: 0;
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            font-size: 12px;
        }
        .footer-bottom-links a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: var(--accent-cyan);
        }

        /* 移动端导航菜单 */
        .mobile-nav-menu {
            display: none;
            flex-direction: column;
            width: 100%;
            padding: 12px 0 8px;
            gap: 4px;
            background: rgba(8, 11, 26, 0.96);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .mobile-nav-menu a {
            display: block;
            padding: 10px 16px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }
        .mobile-nav-menu a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .mobile-nav-menu a.active-nav {
            background: rgba(59, 130, 246, 0.2);
            color: #fff;
            border: 1px solid rgba(59, 130, 246, 0.35);
        }
        .mobile-nav-menu.show {
            display: flex;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: var(--spacing-section-mobile) 0;
            }
            .nav-container {
                padding: 12px 16px;
            }
            .nav-menu {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .nav-cta .btn-primary {
                padding: 10px 18px;
                font-size: 13px;
            }
            .nav-status {
                display: none;
            }
            .cat-hero {
                padding: 32px 0 28px;
            }
            .cat-hero h1 {
                font-size: 24px;
            }
            .cat-hero-sub {
                font-size: 14px;
            }
            .cat-hero-content {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
            }
            .cat-hero-side {
                align-items: flex-start;
                width: 100%;
            }
            .countdown-ring {
                width: 72px;
                height: 72px;
            }
            .countdown-ring::after {
                width: 56px;
                height: 56px;
            }
            .countdown-inner {
                font-size: 18px;
            }
            .countdown-inner small {
                font-size: 9px;
            }
            .hero-sell-points {
                justify-content: flex-start;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .news-card-title {
                font-size: 15px;
                min-height: 44px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 28px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h2 {
                font-size: 20px;
            }
            .subscribe-input-group {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .featured-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .featured-thumb {
                width: 100%;
                height: auto;
                aspect-ratio: 16 / 9;
            }
            .btn-primary {
                padding: 12px 24px;
                font-size: 14px;
            }
            .btn-secondary {
                padding: 11px 20px;
                font-size: 13px;
            }
            .cat-hero h1 {
                font-size: 21px;
            }
            .tag-cloud a {
                padding: 8px 14px;
                font-size: 13px;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #080B1A;
            --bg-secondary: #0D1230;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --text-primary: #F8FAFC;
            --text-secondary: #B0B8C8;
            --text-muted: #7A849A;
            --accent-blue: #3B82F6;
            --accent-cyan: #22D3EE;
            --accent-violet: #8B5CF6;
            --border-light: rgba(255, 255, 255, 0.12);
            --border-glow: rgba(59, 130, 246, 0.5);
            --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.5);
            --shadow-glow-strong: 0 0 32px rgba(59, 130, 246, 0.7);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
        }

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

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

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 4px;
            border-radius: 4px;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            color: inherit;
        }

        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 6px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

        .section-alt {
            background: var(--bg-secondary);
        }

        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            transition: all var(--transition-base);
        }

        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 24px rgba(59, 130, 246, 0.15);
            transform: translateY(-2px);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            background: linear-gradient(135deg, #3B82F6 0%, #22D3EE 100%);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(255, 255, 255, 0.2);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-3px);
            filter: brightness(1.1);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
            filter: brightness(0.95);
        }

        .btn-primary:disabled {
            background: #3a4256;
            box-shadow: none;
            cursor: not-allowed;
            transform: none;
            color: #8b96b0;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition-base);
            border: 1px solid rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(59, 130, 246, 0.5);
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.25);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0);
            background: rgba(255, 255, 255, 0.06);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .badge-cyan {
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent-cyan);
            border: 1px solid rgba(34, 211, 238, 0.3);
        }

        .badge-blue {
            background: rgba(59, 130, 246, 0.15);
            color: #93c5fd;
            border: 1px solid rgba(59, 130, 246, 0.3);
        }

        .badge-violet {
            background: rgba(139, 92, 246, 0.15);
            color: #c4b5fd;
            border: 1px solid rgba(139, 92, 246, 0.3);
        }

        .badge-green {
            background: rgba(34, 197, 94, 0.15);
            color: #86efac;
            border: 1px solid rgba(34, 197, 94, 0.3);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(8, 11, 26, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--transition-base);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            font-size: 22px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            box-shadow: 0 0 18px rgba(59, 130, 246, 0.4);
            transition: all var(--transition-base);
        }

        .nav-logo:hover .nav-logo-mark {
            box-shadow: 0 0 26px rgba(59, 130, 246, 0.65);
            transform: scale(1.05);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav-menu a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-menu a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-menu a.active-nav {
            color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.1);
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 50px;
            background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            transition: all var(--transition-base);
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.35);
            white-space: nowrap;
        }

        .nav-cta:hover {
            box-shadow: 0 0 28px rgba(139, 92, 246, 0.55);
            transform: translateY(-2px);
            filter: brightness(1.08);
        }

        .nav-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 12px;
            border-radius: 50px;
            background: rgba(34, 197, 94, 0.12);
            color: #86efac;
            font-size: 12px;
            font-weight: 600;
            border: 1px solid rgba(34, 197, 94, 0.25);
            white-space: nowrap;
        }

        .nav-status-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #22c55e;
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.6);
            }
        }

        .mobile-nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
        }

        .mobile-nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .mobile-nav-menu {
            display: none;
            flex-direction: column;
            padding: 16px 0 20px;
            gap: 4px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-nav-menu a {
            padding: 12px 16px;
            border-radius: 8px;
            font-size: 16px;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .mobile-nav-menu a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
        }

        .mobile-nav-menu a.active-nav {
            color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.1);
            font-weight: 600;
        }

        .mobile-nav-open .mobile-nav-menu {
            display: flex;
        }

        .download-hero {
            position: relative;
            padding: 64px 0 72px;
            background: url('/assets/images/cd758a95961cf8dc.webp') center center / cover no-repeat;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .download-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 11, 26, 0.88) 0%, rgba(13, 18, 48, 0.75) 50%, rgba(8, 11, 26, 0.92) 100%);
            z-index: 1;
        }

        .download-hero::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.25) 0%, rgba(34, 211, 238, 0.08) 40%, transparent 70%);
            border-radius: 50%;
            z-index: 2;
            pointer-events: none;
            animation: hero-glow 8s ease-in-out infinite alternate;
        }

        @keyframes hero-glow {
            0% {
                opacity: 0.6;
                transform: translate(0, 0) scale(1);
            }
            100% {
                opacity: 1;
                transform: translate(-30px, 20px) scale(1.15);
            }
        }

        .download-hero-content {
            position: relative;
            z-index: 3;
            max-width: 720px;
        }

        .download-hero h1 {
            font-size: 38px;
            font-weight: 900;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
            color: var(--text-primary);
        }

        .download-hero .hero-sub {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 560px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--accent-cyan);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--text-primary);
        }

        .breadcrumb-sep {
            opacity: 0.5;
            font-size: 12px;
        }

        .hero-stats-row {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 8px;
        }

        .hero-stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .hero-stat-item strong {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-primary);
        }

        .section-title-wrap {
            margin-bottom: 40px;
        }

        .section-title-wrap h2 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 12px;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }

        .section-title-wrap p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 640px;
        }

        .download-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .download-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
        }

        .download-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 28px rgba(59, 130, 246, 0.2);
            transform: translateY(-4px);
        }

        .download-card-img {
            position: relative;
            height: 190px;
            overflow: hidden;
            background: var(--bg-secondary);
        }

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

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

        .download-card-img .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }

        .download-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .download-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 8px;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .download-card-body .card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .download-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 16px;
            margin-top: auto;
        }

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

        .download-card .btn-primary,
        .download-card .btn-secondary {
            width: 100%;
            padding: 10px 18px;
            font-size: 14px;
            border-radius: 10px;
        }

        .featured-section {
            background: var(--bg-secondary);
            padding: var(--spacing-section) 0;
        }

        .featured-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .featured-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .featured-card:hover {
            border-color: rgba(139, 92, 246, 0.45);
            box-shadow: 0 10px 32px rgba(0, 0, 0, 0.4), 0 0 20px rgba(139, 92, 246, 0.2);
            transform: translateY(-4px);
        }

        .featured-card-img {
            height: 120px;
            overflow: hidden;
        }

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

        .featured-card:hover .featured-card-img img {
            transform: scale(1.05);
        }

        .featured-card-body {
            padding: 14px 16px;
        }

        .featured-card-body h4 {
            font-size: 15px;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 4px;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .featured-card-body p {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud a {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-light);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .tag-cloud a:hover {
            background: rgba(59, 130, 246, 0.15);
            border-color: rgba(59, 130, 246, 0.4);
            color: var(--text-primary);
            box-shadow: 0 0 14px rgba(59, 130, 246, 0.2);
            transform: translateY(-2px);
        }

        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35), 0 0 18px rgba(34, 211, 238, 0.15);
            transform: translateY(-2px);
        }

        .stat-card .stat-number {
            font-size: 36px;
            font-weight: 900;
            line-height: 1.2;
            background: linear-gradient(135deg, #3B82F6 0%, #22D3EE 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 8px;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-primary);
            transition: all var(--transition-fast);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.15);
            color: var(--accent-cyan);
            font-size: 18px;
            transition: all var(--transition-fast);
            font-weight: 700;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 240px;
            padding: 0 22px 18px;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(34, 211, 238, 0.2);
        }

        .cta-panel {
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(139, 92, 246, 0.12) 50%, rgba(34, 211, 238, 0.1) 100%);
            border: 1px solid rgba(59, 130, 246, 0.3);
            border-radius: var(--radius-lg);
            padding: 52px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -40%;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-panel h3 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }

        .cta-panel p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            position: relative;
            z-index: 2;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }

        .cta-panel .btn-primary {
            position: relative;
            z-index: 2;
        }

        .site-footer {
            background: #060812;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 32px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            font-size: 20px;
            margin-bottom: 16px;
        }

        .footer-brand-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-links-title {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--text-muted);
            transition: all var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--accent-cyan);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: var(--text-muted);
            line-height: 2;
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .footer-bottom-links a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--text-primary);
        }

        @media (max-width: 1024px) {
            .download-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .download-hero h1 {
                font-size: 32px;
            }
            .nav-menu {
                gap: 2px;
            }
            .nav-menu a {
                padding: 8px 10px;
                font-size: 14px;
            }
            .nav-cta {
                padding: 9px 16px;
                font-size: 13px;
            }
            .nav-status {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-section-mobile) 0;
            }
            .header-inner {
                height: 64px;
            }
            .nav-menu {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .mobile-nav-toggle {
                display: flex;
            }
            .mobile-nav-menu {
                display: flex;
            }
            .mobile-nav-hidden .mobile-nav-menu {
                display: none;
            }
            .download-hero {
                padding: 40px 0 48px;
                min-height: 320px;
            }
            .download-hero h1 {
                font-size: 26px;
                line-height: 1.4;
            }
            .download-hero .hero-sub {
                font-size: 15px;
                line-height: 1.7;
            }
            .hero-stats-row {
                gap: 12px;
            }
            .hero-stat-item strong {
                font-size: 15px;
            }
            .download-grid {
                grid-template-columns: 1fr;
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .featured-card-img {
                height: 100px;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-card .stat-number {
                font-size: 28px;
            }
            .cta-panel {
                padding: 36px 20px;
            }
            .cta-panel h3 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .section-title-wrap h2 {
                font-size: 22px;
            }
            .tag-cloud a {
                padding: 8px 16px;
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .download-hero h1 {
                font-size: 22px;
            }
            .download-hero .hero-sub {
                font-size: 14px;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 20px 14px;
            }
            .stat-card .stat-number {
                font-size: 24px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 14px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
            .download-card-body {
                padding: 16px;
            }
            .download-card-img {
                height: 160px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 22px;
                font-size: 14px;
            }
        }

/* roulang page: category6 */
:root {
            --bg-primary: #080B1A;
            --bg-secondary: #0D1230;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --text-primary: #F8FAFC;
            --text-secondary: #B0B8C8;
            --text-muted: #7A849A;
            --accent-blue: #3B82F6;
            --accent-cyan: #22D3EE;
            --accent-violet: #8B5CF6;
            --border-light: rgba(255, 255, 255, 0.12);
            --border-glow: rgba(59, 130, 246, 0.5);
            --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.5);
            --shadow-glow-strong: 0 0 32px rgba(59, 130, 246, 0.7);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
        }

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

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 4px;
            border-radius: 4px;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            color: inherit;
        }

        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 6px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

        .section-alt {
            background: var(--bg-secondary);
        }

        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            transition: all var(--transition-base);
        }

        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 24px rgba(59, 130, 246, 0.15);
            transform: translateY(-2px);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            background: linear-gradient(135deg, #3B82F6 0%, #22D3EE 100%);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(255, 255, 255, 0.2);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-3px);
            filter: brightness(1.1);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
            filter: brightness(0.95);
        }
        .btn-primary:disabled {
            background: #3a4256;
            box-shadow: none;
            cursor: not-allowed;
            transform: none;
            color: #8b96b0;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition-base);
            border: 1px solid rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(59, 130, 246, 0.5);
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.25);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
            background: rgba(255, 255, 255, 0.06);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-cyan {
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent-cyan);
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .badge-blue {
            background: rgba(59, 130, 246, 0.15);
            color: var(--accent-blue);
            border: 1px solid rgba(59, 130, 246, 0.3);
        }
        .badge-violet {
            background: rgba(139, 92, 246, 0.15);
            color: var(--accent-violet);
            border: 1px solid rgba(139, 92, 246, 0.3);
        }

        .header-main {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(8, 11, 26, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: wrap;
            min-height: 72px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            letter-spacing: 0.02em;
        }
        .nav-logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, #3B82F6, #22D3EE);
            border-radius: 12px;
            font-size: 20px;
            font-weight: 900;
            box-shadow: 0 0 18px rgba(59, 130, 246, 0.5);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-menu a {
            padding: 8px 14px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-menu a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-menu a.active-nav {
            color: #fff;
            background: rgba(59, 130, 246, 0.22);
            box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.35);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: 50px;
            background: linear-gradient(135deg, #3B82F6, #22D3EE);
            font-weight: 700;
            font-size: 14px;
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.4);
            transition: all var(--transition-base);
        }
        .nav-cta:hover {
            box-shadow: 0 0 26px rgba(59, 130, 246, 0.7);
            transform: translateY(-2px);
        }
        .mobile-menu-btn {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }
        .mobile-menu-btn span {
            display: block;
            width: 20px;
            height: 2px;
            background: #fff;
            margin: 3px 0;
            border-radius: 2px;
        }
        .mobile-nav-panel {
            display: none;
            flex-direction: column;
            gap: 6px;
            padding: 12px 16px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .mobile-nav-panel.open {
            display: flex;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: #fff;
        }

        .faq-item {
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(255, 255, 255, 0.04);
            border-radius: 14px;
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.35);
            background: rgba(255, 255, 255, 0.06);
        }
        .faq-question {
            width: 100%;
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            text-align: left;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            color: #fff;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: all var(--transition-base);
            padding: 0 20px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 260px;
            padding: 0 20px 20px;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.18);
            color: var(--accent-cyan);
            font-weight: 900;
            font-size: 18px;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(34, 211, 238, 0.2);
        }

        .site-footer {
            background: #05070F;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 48px 0 28px;
            color: var(--text-secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 22px;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand-text {
            max-width: 320px;
            line-height: 1.8;
            color: var(--text-muted);
            font-size: 14px;
        }
        .footer-links-title {
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            font-size: 15px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 14px;
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .footer-bottom-links a {
            color: var(--text-muted);
        }
        .footer-bottom-links a:hover {
            color: #fff;
        }
        .hero-faq {
            background: radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.35), transparent 32%), radial-gradient(circle at 80% 30%, rgba(34, 211, 238, 0.18), transparent 30%), linear-gradient(140deg, #0A0F22 0%, #0D1230 55%, #080B1A 100%);
            position: relative;
            overflow: hidden;
            padding: 64px 0 40px;
        }
        .hero-faq::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(255,255,255,0.04) 0%, transparent 30%, rgba(255,255,255,0.02) 50%, transparent 70%);
            pointer-events: none;
        }
        .hero-faq-inner {
            position: relative;
            z-index: 2;
        }
        .hero-faq h1 {
            font-size: 34px;
            font-weight: 900;
            line-height: 1.3;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
        }
        .hero-faq .subtitle {
            color: var(--text-secondary);
            max-width: 720px;
            font-size: 16px;
            line-height: 1.8;
        }
        .cover-resource {
            border-radius: 14px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.4);
        }
        .cover-resource img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: transform var(--transition-base);
        }
        .cover-resource:hover img {
            transform: scale(1.04);
        }
        .topic-card {
            padding: 16px;
            display: block;
            height: 100%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            transition: all var(--transition-base);
        }
        .topic-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 0 18px rgba(59, 130, 246, 0.18);
        }
        .topic-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .topic-card p {
            font-size: 14px;
            color: var(--text-secondary);
        }
        .tag-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 14px;
            color: var(--text-secondary);
            transition: all var(--transition-base);
        }
        .tag-link:hover {
            color: #fff;
            border-color: rgba(34, 211, 238, 0.5);
            box-shadow: 0 0 14px rgba(34, 211, 238, 0.18);
        }
        .stat-number {
            font-size: 32px;
            font-weight: 900;
            background: linear-gradient(135deg, #3B82F6, #22D3EE);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: inline-block;
        }
        .section-title {
            font-size: 28px;
            font-weight: 800;
            letter-spacing: 0.01em;
            margin-bottom: 10px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .nav-menu {
                gap: 2px;
            }
        }
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            .mobile-menu-btn {
                display: inline-flex;
            }
            .nav-cta {
                display: none;
            }
            .hero-faq h1 {
                font-size: 28px;
            }
            .section {
                padding: var(--spacing-section-mobile) 0;
            }
            .section-title {
                font-size: 24px;
            }
            .stat-number {
                font-size: 26px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-faq h1 {
                font-size: 24px;
            }
            .btn-primary {
                padding: 12px 24px;
                font-size: 15px;
            }
            .btn-secondary {
                padding: 11px 22px;
                font-size: 14px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 14px;
            }
        }

/* roulang page: category5 */
:root {
            --bg-primary: #080B1A;
            --bg-secondary: #0D1230;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --text-primary: #F8FAFC;
            --text-secondary: #B0B8C8;
            --text-muted: #7A849A;
            --accent-blue: #3B82F6;
            --accent-cyan: #22D3EE;
            --accent-violet: #8B5CF6;
            --border-light: rgba(255, 255, 255, 0.12);
            --border-glow: rgba(59, 130, 246, 0.5);
            --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.5);
            --shadow-glow-strong: 0 0 32px rgba(59, 130, 246, 0.7);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
        }

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

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 4px;
            border-radius: 4px;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            color: inherit;
        }

        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 6px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

        .section-alt {
            background: var(--bg-secondary);
        }

        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            transition: all var(--transition-base);
        }

        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 24px rgba(59, 130, 246, 0.15);
            transform: translateY(-2px);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            background: linear-gradient(135deg, #3B82F6 0%, #22D3EE 100%);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(255, 255, 255, 0.2);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-3px);
            filter: brightness(1.1);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
            filter: brightness(0.95);
        }

        .btn-primary:disabled {
            background: #3a4256;
            box-shadow: none;
            cursor: not-allowed;
            transform: none;
            color: #8b96b0;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition-base);
            border: 1px solid rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(59, 130, 246, 0.5);
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.25);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0);
            background: rgba(255, 255, 255, 0.06);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .badge-cyan {
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent-cyan);
            border: 1px solid rgba(34, 211, 238, 0.3);
        }

        .badge-blue {
            background: rgba(59, 130, 246, 0.15);
            color: var(--accent-blue);
            border: 1px solid rgba(59, 130, 246, 0.3);
        }

        .badge-violet {
            background: rgba(139, 92, 246, 0.15);
            color: var(--accent-violet);
            border: 1px solid rgba(139, 92, 246, 0.3);
        }

        .badge-green {
            background: rgba(34, 197, 94, 0.15);
            color: #4ADE80;
            border: 1px solid rgba(34, 197, 94, 0.3);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 11, 26, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 14px 0;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .nav-logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            font-size: 18px;
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.45);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }

        .nav-menu a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-menu a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-menu a.active-nav {
            color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.25);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            white-space: nowrap;
            transition: all var(--transition-base);
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.4);
        }

        .nav-cta:hover {
            box-shadow: var(--shadow-glow-strong);
            transform: translateY(-2px);
        }

        .nav-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            border-radius: 50px;
            background: rgba(34, 197, 94, 0.12);
            color: #4ADE80;
            font-size: 12px;
            font-weight: 600;
            border: 1px solid rgba(34, 197, 94, 0.25);
            white-space: nowrap;
        }

        .nav-status-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #4ADE80;
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-light);
        }

        .mobile-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .topics-hero {
            position: relative;
            padding: 48px 0 56px;
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            overflow: hidden;
        }

        .topics-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .topics-hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--accent-cyan);
        }

        .breadcrumb-sep {
            opacity: 0.5;
        }

        .hero-stack {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 20px;
            align-items: stretch;
        }

        .hero-main-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(59, 130, 246, 0.3);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4), 0 0 32px rgba(59, 130, 246, 0.12);
            position: relative;
            overflow: hidden;
        }

        .hero-main-card::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-side-cards {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .hero-side-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px 20px;
            display: flex;
            align-items: center;
            gap: 16px;
            flex: 1;
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .hero-side-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(34, 211, 238, 0.35);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.15);
            transform: translateY(-2px);
        }

        .hero-side-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(59, 130, 246, 0.15);
            border: 1px solid rgba(59, 130, 246, 0.25);
            font-size: 22px;
            flex-shrink: 0;
        }

        .h1-title {
            font-size: 34px;
            font-weight: 900;
            line-height: 1.3;
            letter-spacing: 0.01em;
            color: var(--text-primary);
            margin: 0 0 12px 0;
        }

        .h1-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 600px;
            margin: 0;
        }

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

        .topic-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .topic-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4), 0 0 20px rgba(59, 130, 246, 0.12);
            transform: translateY(-3px);
        }

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

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

        .topic-card:hover .topic-card-image img {
            transform: scale(1.05);
        }

        .topic-card-image-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(8, 11, 26, 0.7) 100%);
            pointer-events: none;
        }

        .topic-card-body {
            padding: 18px 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .topic-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 8px 0;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .topic-card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 16px 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .topic-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            font-size: 12px;
            color: var(--text-muted);
        }

        .topic-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-cyan);
            transition: all var(--transition-fast);
        }

        .topic-card-link:hover {
            color: #fff;
            gap: 10px;
        }

        .editor-pick {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .editor-pick-item {
            display: flex;
            align-items: center;
            gap: 14px;
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .editor-pick-item:hover {
            background: var(--bg-card-hover);
            border-color: rgba(139, 92, 246, 0.35);
            box-shadow: 0 0 16px rgba(139, 92, 246, 0.18);
            transform: translateY(-2px);
        }

        .editor-pick-image {
            width: 72px;
            height: 72px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
        }

        .editor-pick-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

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

        .editor-pick-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 4px 0;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .editor-pick-sub {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-light);
            color: var(--text-secondary);
            font-size: 13px;
            font-weight: 500;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .tag-item:hover {
            background: rgba(59, 130, 246, 0.15);
            border-color: rgba(59, 130, 246, 0.4);
            color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.2);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .stat-item {
            text-align: center;
            padding: 24px 16px;
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }

        .stat-item:hover {
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
            transform: translateY(-2px);
        }

        .stat-number {
            font-size: 36px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: rgba(34, 211, 238, 0.3);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: all var(--transition-fast);
        }

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

        .faq-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.15);
            border: 1px solid rgba(59, 130, 246, 0.25);
            font-size: 16px;
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            margin: 0;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .cta-panel {
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(34, 211, 238, 0.1) 50%, rgba(139, 92, 246, 0.15) 100%);
            border: 1px solid rgba(59, 130, 246, 0.3);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .site-footer {
            background: #060810;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 18px;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .footer-brand-text {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }

        .footer-links-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-bottom-links a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--accent-cyan);
        }

        .section-title {
            font-size: 26px;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 12px 0;
            line-height: 1.4;
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 32px 0;
            max-width: 700px;
        }

        .section-header {
            margin-bottom: 32px;
        }

        .section-header-flex {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .divider-glow {
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.5), rgba(34, 211, 238, 0.5), transparent);
            margin: 0 0 16px 0;
            border-radius: 2px;
        }

        @media (max-width: 1024px) {
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .h1-title {
                font-size: 28px;
            }
            .nav-menu {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .nav-status {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-section-mobile) 0;
            }
            .container {
                padding: 0 16px;
            }
            .hero-stack {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .hero-main-card {
                padding: 24px 20px;
            }
            .hero-side-card {
                padding: 16px 16px;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .editor-pick {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 28px;
            }
            .h1-title {
                font-size: 24px;
            }
            .section-title {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-panel {
                padding: 28px 20px;
            }
            .nav-logo {
                font-size: 17px;
            }
            .nav-cta span {
                display: none;
            }
            .nav-cta {
                padding: 8px 14px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .h1-title {
                font-size: 21px;
            }
            .hero-main-card {
                padding: 20px 16px;
            }
            .topic-card-image {
                height: 160px;
            }
            .section-title {
                font-size: 20px;
            }
        }