/* roulang page: index */
:root {
            --color-primary: #5A4B8C;
            --color-primary-light: #6D5CA7;
            --color-secondary: #00E0FF;
            --color-secondary-20: rgba(0, 224, 255, 0.2);
            --color-dark: #0F0F1A;
            --color-dark-card: #1A1A2E;
            --color-darker-card: #252535;
            --color-text-title: #FFFFFF;
            --color-text-body: #E0E0E0;
            --color-text-muted: #AAAAAA;
            --radius-lg: 0.75rem;
            --radius-xl: 1rem;
            --shadow-glow: 0 0 15px rgba(90, 75, 140, 0.3);
            --shadow-glow-hover: 0 0 20px rgba(0, 224, 255, 0.7);
            --shadow-glow-inner: inset 0 1px 1px rgba(255, 255, 255, 0.1);
            --transition-base: all 0.25s ease-in-out;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Microsoft YaHei', sans-serif;
            background-color: var(--color-dark);
            color: var(--color-text-body);
            line-height: 1.75;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--color-secondary);
            text-decoration: none;
        }
        a:hover {
            color: #FFFFFF;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        /* 定制按钮 */
        .btn-primary {
            background-color: var(--color-primary);
            color: white;
            font-weight: 600;
            padding: 0.875rem 2rem;
            border-radius: var(--radius-lg);
            border: none;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .btn-primary:hover {
            background-color: var(--color-primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow-hover);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--color-secondary);
            border: 1px solid var(--color-secondary);
            font-weight: 600;
            padding: 0.875rem 2rem;
            border-radius: var(--radius-lg);
            transition: var(--transition-base);
        }
        .btn-secondary:hover {
            background-color: rgba(0, 224, 255, 0.1);
            transform: translateY(-2px);
        }
        /* 卡片 */
        .card {
            background-color: var(--color-dark-card);
            border-radius: var(--radius-xl);
            padding: 1.5rem;
            border: 1px solid rgba(90, 75, 140, 0.2);
            box-shadow: var(--shadow-glow-inner), var(--shadow-glow);
            transition: var(--transition-base);
            height: 100%;
        }
        .card:hover {
            transform: translateY(-8px);
            border-color: rgba(0, 224, 255, 0.4);
            box-shadow: var(--shadow-glow-inner), 0 10px 30px rgba(0, 224, 255, 0.2);
        }
        .card-img-top {
            border-radius: calc(var(--radius-xl) - 0.25rem);
            overflow: hidden;
            margin-bottom: 1.25rem;
            position: relative;
        }
        .card-img-top img {
            transition: transform 0.4s ease;
        }
        .card:hover .card-img-top img {
            transform: scale(1.05);
        }
        /* 标签 */
        .badge {
            display: inline-block;
            background-color: rgba(90, 75, 140, 0.3);
            color: var(--color-secondary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }
        /* FAQ */
        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .faq-question {
            padding: 1.5rem 0;
            font-weight: 600;
            font-size: 1.125rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-question:hover {
            color: var(--color-secondary);
        }
        .faq-answer {
            padding-bottom: 1.5rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }
        /* 数字展示 */
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--color-secondary);
            line-height: 1;
            margin-bottom: 0.5rem;
        }
        .stat-label {
            font-size: 1rem;
            color: var(--color-text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        /* 定制容器 */
        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }
        /* 导航相关 */
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 2.5rem;
        }
        @media (max-width: 1024px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-item {
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            transition: color 0.2s;
        }
        .nav-item:hover, .nav-item.active {
            color: var(--color-secondary);
        }
        .nav-item.active {
            font-weight: 600;
            position: relative;
        }
        .nav-item.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--color-secondary);
            border-radius: 1px;
        }
        .mobile-menu-btn {
            display: none;
        }
        @media (max-width: 1024px) {
            .mobile-menu-btn {
                display: block;
            }
        }
        .mobile-menu {
            position: fixed;
            top: 0;
            right: -100%;
            width: 80%;
            max-width: 320px;
            height: 100vh;
            background-color: var(--color-dark-card);
            padding: 2rem;
            z-index: 999;
            transition: right 0.3s ease;
            box-shadow: -10px 0 30px rgba(0, 0, 0, 0.3);
        }
        .mobile-menu.open {
            right: 0;
        }
        .mobile-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 998;
            display: none;
        }
        .mobile-overlay.open {
            display: block;
        }
        /* Hero 背景 */
        .hero-bg {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            overflow: hidden;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to right, rgba(15, 15, 26, 0.9) 0%, rgba(15, 15, 26, 0.6) 100%);
            z-index: 0;
        }
        .hero-content {
            position: relative;
            z-index: 1;
        }
        /* 板块通用 */
        .section {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        @media (max-width: 768px) {
            .section {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
        }
        .section-title {
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--color-text-title);
            margin-bottom: 1rem;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.875rem;
            }
        }
        .section-subtitle {
            font-size: 1.125rem;
            color: var(--color-text-muted);
            max-width: 600px;
            margin-bottom: 3rem;
        }
        /* 流程步骤 */
        .step {
            display: flex;
            align-items: flex-start;
            margin-bottom: 3rem;
            position: relative;
        }
        .step-number {
            width: 60px;
            height: 60px;
            background-color: var(--color-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
            color: white;
            flex-shrink: 0;
            margin-right: 2rem;
            position: relative;
            z-index: 1;
        }
        .step-content {
            padding-top: 0.75rem;
        }
        .step-title {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--color-text-title);
            margin-bottom: 0.5rem;
        }
        .step::after {
            content: '';
            position: absolute;
            top: 60px;
            left: 30px;
            width: 2px;
            height: calc(100% + 2rem);
            background-color: rgba(90, 75, 140, 0.4);
        }
        .step:last-child::after {
            display: none;
        }

/* roulang page: category1 */
:root {
            --color-primary: #5A4B8C;
            --color-secondary: #00E0FF;
            --color-dark: #0F0F1A;
            --color-dark-gray: #1A1A2E;
            --color-card: #252535;
            --color-light-text: #E0E0E0;
            --color-muted: #AAAAAA;
            --radius-lg: 0.75rem;
            --radius-xl: 1rem;
            --shadow-glow: 0 0 15px rgba(90, 75, 140, 0.3);
            --shadow-glow-secondary: 0 0 20px rgba(0, 224, 255, 0.7);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, sans-serif;
            background-color: var(--color-dark);
            color: var(--color-light-text);
            line-height: 1.75;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.2;
            color: #FFFFFF;
        }
        a {
            color: var(--color-secondary);
            text-decoration: none;
            transition: all 0.2s ease;
        }
        a:hover {
            color: #FFFFFF;
        }
        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 1024px) {
            .container-custom {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .nav-desktop {
            display: none;
        }
        @media (min-width: 1024px) {
            .nav-desktop {
                display: flex;
                align-items: center;
                gap: 2.5rem;
            }
        }
        .nav-item {
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
            position: relative;
            padding: 0.5rem 0;
        }
        .nav-item:hover {
            color: var(--color-secondary);
        }
        .nav-item.active {
            color: var(--color-secondary);
            font-weight: 600;
        }
        .nav-item.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--color-secondary);
            border-radius: 1px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.75rem 1.75rem;
            background-color: var(--color-secondary);
            color: var(--color-dark);
            font-weight: 600;
            border-radius: var(--radius-lg);
            transition: all 0.3s ease;
            box-shadow: var(--shadow-glow);
            white-space: nowrap;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow-secondary);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.75rem 1.75rem;
            background-color: transparent;
            color: #FFFFFF;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-lg);
            transition: all 0.3s ease;
        }
        .btn-secondary:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            transform: translateY(-2px);
        }
        .mobile-menu {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            max-width: 320px;
            height: 100vh;
            background-color: var(--color-primary);
            padding: 2rem;
            transition: right 0.3s ease;
            z-index: 100;
            overflow-y: auto;
        }
        .mobile-menu.active {
            right: 0;
        }
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.75);
            z-index: 99;
        }
        .mobile-menu-overlay.active {
            display: block;
        }
        .product-card {
            background-color: var(--color-card-gray);
            border-radius: var(--radius-xl);
            overflow: hidden;
            height: 100%;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: all 0.4s ease;
            box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.05), var(--shadow-glow);
        }
        .product-card:hover {
            transform: translateY(-8px);
            border-color: rgba(0, 224, 255, 0.3);
            box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1), 0 0 25px rgba(0, 224, 255, 0.4);
        }
        .tag {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            background-color: rgba(90, 75, 140, 0.2);
            color: var(--color-secondary);
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 9999px;
            border: 1px solid rgba(90, 75, 140, 0.4);
        }
        .section-padding {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
        }
        .hero-category {
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.9) 0%, rgba(15, 15, 26, 0.95) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            position: relative;
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 80% 20%, rgba(0, 224, 255, 0.1) 0%, transparent 60%);
            pointer-events: none;
        }
        .stats-card {
            background-color: rgba(37, 37, 53, 0.6);
            border-radius: var(--radius-xl);
            border: 1px solid rgba(90, 75, 140, 0.3);
            padding: 2rem;
            backdrop-filter: blur(8px);
            text-align: center;
            transition: all 0.3s ease;
        }
        .stats-card:hover {
            border-color: rgba(0, 224, 255, 0.5);
            transform: translateY(-4px);
        }
        .feature-list li {
            position: relative;
            padding-left: 1.75rem;
            margin-bottom: 0.75rem;
        }
        .feature-list li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: var(--color-secondary);
            font-weight: bold;
        }
        .pagination-item {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2.5rem;
            height: 2.5rem;
            border-radius: var(--radius-lg);
            background-color: var(--color-card-gray);
            color: var(--color-light-text);
            font-weight: 600;
            transition: all 0.2s ease;
        }
        .pagination-item:hover, .pagination-item.active {
            background-color: var(--color-primary);
            color: #FFFFFF;
        }