/* roulang page: index */
:root {
            /* 设计变量 */
            --primary: #0A66C2;
            --primary-dark: #0854a0;
            --secondary-green: #10B981;
            --secondary-amber: #F59E0B;
            --bg-main: #FFFFFF;
            --bg-secondary: #F8FAFC;
            --bg-dark: #1E293B;
            --text-primary: #1F2937;
            --text-secondary: #6B7280;
            --text-light: #F1F5F9;
            --border-color: #E5E7EB;
            --radius-base: 0.5rem;
            --radius-btn: 0.375rem;
            --radius-card: 0.75rem;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --transition-base: all 0.3s ease;
        }
        /* 基础重置 */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--text-primary);
            background-color: var(--bg-main);
            line-height: 1.75;
            font-size: 1rem;
            font-weight: 400;
            margin: 0;
            padding: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-base);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        /* 覆盖 Bootstrap 默认值 */
        .container, .container-fluid {
            max-width: 1140px;
        }
        /* 按钮样式重写 */
        .btn {
            border-radius: var(--radius-btn);
            font-weight: 600;
            padding: 0.75rem 1.75rem;
            transition: var(--transition-base);
        }
        .btn-primary {
            background-color: var(--primary);
            border-color: var(--primary);
            color: white;
        }
        .btn-primary:hover, .btn-primary:focus {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: white;
            transform: translateY(-2px);
        }
        .btn-outline-primary {
            color: var(--primary);
            border-color: var(--primary);
            background-color: transparent;
        }
        .btn-outline-primary:hover {
            background-color: var(--primary);
            border-color: var(--primary);
            color: white;
        }
        .btn-lg {
            padding: 1rem 2.5rem;
            font-size: 1.125rem;
        }
        /* 导航栏 */
        .navbar {
            background-color: var(--bg-main);
            padding-top: 1.5rem;
            padding-bottom: 1.5rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 1030;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.75rem;
            color: var(--primary);
            display: flex;
            align-items: center;
        }
        .navbar-brand i {
            margin-right: 0.5rem;
            color: var(--secondary-green);
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.5rem 1.25rem;
            border-radius: var(--radius-btn);
        }
        .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
            color: var(--primary);
            background-color: rgba(10, 102, 194, 0.08);
        }
        .navbar .cta-btn {
            margin-left: 1rem;
        }
        .navbar-toggler {
            border: none;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        /* Hero 区域 */
        .hero {
            padding: 7rem 0 5rem;
            background: linear-gradient(135deg, #E0F2FE 0%, #FFFFFF 100%);
            overflow: hidden;
        }
        .hero-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .hero-text {
            flex: 1;
            padding-right: 3rem;
        }
        .hero h1 {
            font-size: 2.5rem;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            color: var(--text-primary);
        }
        .hero p.lead {
            font-size: 1.25rem;
            color: var(--text-secondary);
            margin-bottom: 2.5rem;
            max-width: 90%;
        }
        .hero-visual {
            flex: 1;
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
        }
        .hero-visual img {
            width: 100%;
            height: auto;
        }
        /* 通用板块样式 */
        section {
            padding: 5rem 0;
        }
        section.bg-light {
            background-color: var(--bg-secondary) !important;
        }
        section.bg-dark {
            background-color: var(--bg-dark) !important;
            color: var(--text-light);
        }
        .section-title {
            text-align: center;
            margin-bottom: 3.5rem;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: inherit;
        }
        .section-title p {
            font-size: 1.125rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto;
        }
        .section-title.bg-dark p {
            color: rgba(241, 245, 249, 0.8);
        }
        /* 卡片样式 */
        .card {
            border: none;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            height: 100%;
            background-color: var(--bg-main);
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-card-hover);
        }
        .card-icon {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-base);
            background-color: rgba(16, 185, 129, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
        }
        .card-icon i {
            font-size: 1.75rem;
            color: var(--secondary-green);
        }
        .card-body {
            padding: 1.75rem;
        }
        .card-title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
        }
        .card-text {
            color: var(--text-secondary);
            margin-bottom: 1.25rem;
        }
        .card-badge {
            display: inline-block;
            background-color: var(--secondary-amber);
            color: white;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.25rem 0.75rem;
            border-radius: 2rem;
            margin-top: 0.5rem;
        }
        /* 数字卡片/数据块 */
        .data-card {
            text-align: center;
            padding: 2rem;
        }
        .data-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 0.5rem;
        }
        .data-label {
            font-size: 1rem;
            color: var(--text-secondary);
            font-weight: 500;
        }
        /* 流程/步骤样式 */
        .process-step {
            display: flex;
            align-items: flex-start;
            margin-bottom: 2.5rem;
        }
        .step-number {
            flex-shrink: 0;
            width: 3rem;
            height: 3rem;
            border-radius: 50%;
            background-color: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.25rem;
            margin-right: 1.5rem;
        }
        .step-content h4 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }
        /* FAQ 手风琴 */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-base) !important;
            margin-bottom: 1rem;
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--text-primary);
            padding: 1.25rem 1.5rem;
            background-color: var(--bg-main);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background-color: var(--bg-main);
            color: var(--primary);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary);
        }
        .faq-accordion .accordion-body {
            padding: 1.25rem 1.5rem;
            color: var(--text-secondary);
            border-top: 1px solid var(--border-color);
        }
        /* CTA 区域 */
        .cta-section {
            text-align: center;
            padding: 4rem;
            border-radius: var(--radius-card);
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
        }
        .cta-section h2 {
            font-size: 2.25rem;
            margin-bottom: 1rem;
            color: inherit;
        }
        .cta-section p {
            font-size: 1.125rem;
            margin-bottom: 2.5rem;
            opacity: 0.9;
        }
        .cta-section .btn-light {
            background-color: white;
            color: var(--primary);
            border: none;
            font-weight: 700;
        }
        .cta-section .btn-light:hover {
            background-color: var(--bg-secondary);
            transform: translateY(-2px);
        }
        /* 页脚 */
        .site-footer {
            background-color: var(--bg-dark);
            color: var(--text-light);
            padding: 4rem 0 2rem;
        }
        .footer-logo {
            font-size: 1.75rem;
            font-weight: 700;
            color: white;
            margin-bottom: 1.5rem;
            display: block;
        }
        .footer-links h5 {
            color: white;
            font-size: 1.125rem;
            margin-bottom: 1.25rem;
            font-weight: 600;
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        .footer-links a {
            color: rgba(241, 245, 249, 0.7);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 0.25rem;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
            margin-top: 3rem;
            text-align: center;
            color: rgba(241, 245, 249, 0.6);
            font-size: 0.875rem;
        }
        /* 响应式调整 */
        @media (max-width: 992px) {
            .hero-content {
                flex-direction: column;
            }
            .hero-text {
                padding-right: 0;
                margin-bottom: 3rem;
                text-align: center;
            }
            .hero h1 {
                font-size: 2.25rem;
            }
            .hero p.lead {
                max-width: 100%;
            }
            section {
                padding: 4rem 0;
            }
            .cta-section {
                padding: 3rem 1.5rem;
            }
        }
        @media (max-width: 768px) {
            .hero {
                padding: 5rem 0 3rem;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .section-title h2 {
                font-size: 1.75rem;
            }
            .data-number {
                font-size: 2.5rem;
            }
            .cta-section h2 {
                font-size: 1.875rem;
            }
            .navbar .cta-btn {
                margin-left: 0;
                margin-top: 1rem;
                width: 100%;
            }
            .footer-links {
                margin-bottom: 2rem;
            }
        }
        @media (max-width: 576px) {
            .btn-lg {
                padding: 0.875rem 2rem;
                font-size: 1rem;
            }
            .card-body {
                padding: 1.5rem;
            }
        }

/* roulang page: category1 */
:root {
            /* 设计变量 */
            --color-primary: #0A66C2;
            --color-primary-dark: #0854a0;
            --color-secondary-1: #10B981;
            --color-secondary-2: #F59E0B;
            --color-bg-light: #FFFFFF;
            --color-bg-card: #F8FAFC;
            --color-bg-dark: #1E293B;
            --color-text-primary: #1F2937;
            --color-text-secondary: #6B7280;
            --color-text-light: #F1F5F9;
            --color-border: #E5E7EB;
            --radius-base: 0.5rem;
            --radius-button: 0.375rem;
            --radius-large: 0.75rem;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --shadow-nav: 0 2px 4px rgba(0, 0, 0, 0.05);
            --transition-base: all 0.2s ease-in-out;
            --spacing-section-lg: 5rem;
            --spacing-section-md: 3rem;
            --spacing-section-sm: 2rem;
        }
        /* 基础重置 */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--color-text-primary);
            background-color: var(--color-bg-light);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        /* 自定义容器 */
        .container {
            max-width: 1140px;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 1400px) {
            .container {
                max-width: 1320px;
            }
        }
        /* 导航栏定制 - 沿用首页样式 */
        .navbar {
            background-color: var(--color-bg-light);
            padding-top: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-nav);
            position: sticky;
            top: 0;
            z-index: 1030;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--color-text-primary) !important;
            display: inline-flex;
            align-items: center;
        }
        .navbar-brand i {
            color: var(--color-primary);
            margin-right: 0.5rem;
        }
        .navbar-nav .nav-link {
            color: var(--color-text-secondary);
            font-weight: 500;
            padding: 0.5rem 1.25rem;
            position: relative;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--color-primary);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 1.25rem;
            right: 1.25rem;
            height: 3px;
            background-color: var(--color-primary);
            border-radius: 2px;
        }
        .navbar-toggler {
            border: 1px solid var(--color-border);
            padding: 0.375rem 0.75rem;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(10, 102, 194, 0.25);
        }
        .cta-btn {
            background-color: var(--color-primary);
            color: white;
            border: none;
            border-radius: var(--radius-button);
            padding: 0.625rem 1.75rem;
            font-weight: 600;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            white-space: nowrap;
        }
        .cta-btn:hover {
            background-color: var(--color-primary-dark);
            color: white;
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }
        @media (max-width: 991.98px) {
            .navbar-collapse {
                padding-top: 1.5rem;
            }
            .navbar-nav .nav-link.active::after {
                left: 0;
                right: auto;
                width: 4px;
                height: 100%;
                top: 0;
                bottom: auto;
            }
            .d-flex {
                margin-top: 1rem;
                justify-content: center;
            }
        }
        /* 分类页 Hero */
        .category-hero {
            background: linear-gradient(135deg, rgba(224, 242, 254, 0.7) 0%, rgba(255, 255, 255, 1) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding-top: var(--spacing-section-lg);
            padding-bottom: var(--spacing-section-lg);
            margin-bottom: var(--spacing-section-md);
            border-radius: 0 0 var(--radius-large) var(--radius-large);
        }
        .breadcrumb-nav {
            background: transparent;
            padding: 0;
            margin-bottom: 1.5rem;
        }
        .breadcrumb-item a {
            color: var(--color-text-secondary);
        }
        .breadcrumb-item.active {
            color: var(--color-primary);
        }
        .category-hero h1 {
            font-size: 2.5rem;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: var(--color-text-primary);
        }
        .category-hero .lead {
            font-size: 1.25rem;
            color: var(--color-text-secondary);
            max-width: 800px;
        }
        /* 页面主体布局 */
        .page-main {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-section-md);
            padding-bottom: var(--spacing-section-lg);
        }
        /* 左侧锚点导航 */
        .category-sidebar {
            flex: 0 0 250px;
        }
        .sticky-sidebar {
            position: sticky;
            top: 100px;
        }
        .side-nav {
            background-color: var(--color-bg-card);
            border-radius: var(--radius-large);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
        }
        .side-nav h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 1.25rem;
            color: var(--color-text-primary);
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--color-primary);
        }
        .side-nav ul {
            list-style: none;
            padding-left: 0;
        }
        .side-nav li {
            margin-bottom: 0.75rem;
        }
        .side-nav a {
            color: var(--color-text-secondary);
            display: block;
            padding: 0.5rem 0.75rem;
            border-radius: var(--radius-base);
            border-left: 3px solid transparent;
        }
        .side-nav a:hover,
        .side-nav a:focus,
        .side-nav a.active {
            background-color: rgba(10, 102, 194, 0.05);
            color: var(--color-primary);
            border-left-color: var(--color-primary);
        }
        /* 右侧内容区域 */
        .category-content {
            flex: 1 1 700px;
        }
        .content-section {
            margin-bottom: var(--spacing-section-lg);
            scroll-margin-top: 120px;
        }
        .content-section h2 {
            font-size: 2rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            color: var(--color-text-primary);
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--color-border);
            position: relative;
        }
        .content-section h2::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 60px;
            height: 2px;
            background-color: var(--color-primary);
        }
        /* 功能/场景卡片 */
        .feature-card {
            background-color: var(--color-bg-card);
            border-radius: var(--radius-large);
            padding: 2rem;
            box-shadow: var(--shadow-card);
            margin-bottom: 2rem;
            transition: var(--transition-base);
            border: 1px solid transparent;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(10, 102, 194, 0.15);
            transform: translateY(-4px);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            background-color: rgba(10, 102, 194, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
        }
        .feature-icon i {
            font-size: 1.75rem;
            color: var(--color-primary);
        }
        .feature-card h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--color-text-primary);
        }
        .feature-card .subtitle {
            color: var(--color-secondary-1);
            font-weight: 500;
            margin-bottom: 1.25rem;
            display: inline-flex;
            align-items: center;
        }
        .feature-card .subtitle i {
            margin-right: 0.5rem;
        }
        .feature-card ul,
        .feature-card ol {
            padding-left: 1.5rem;
            margin-bottom: 1.5rem;
            color: var(--color-text-secondary);
        }
        .feature-card li {
            margin-bottom: 0.5rem;
        }
        .card-cta {
            margin-top: 1.5rem;
        }
        .btn-outline-primary {
            color: var(--color-primary);
            border-color: var(--color-primary);
            border-radius: var(--radius-button);
            padding: 0.5rem 1.5rem;
            font-weight: 500;
        }
        .btn-outline-primary:hover {
            background-color: var(--color-primary);
            color: white;
            border-color: var(--color-primary);
        }
        /* 技术要点标签 */
        .tech-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin: 1.5rem 0;
        }
        .tech-tag {
            background-color: rgba(16, 185, 129, 0.1);
            color: var(--color-secondary-1);
            padding: 0.375rem 1rem;
            border-radius: 50px;
            font-size: 0.875rem;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
        }
        .tech-tag i {
            margin-right: 0.375rem;
            font-size: 0.875rem;
        }
        /* 流程步骤组件 */
        .process-steps {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .process-step {
            flex: 1 1 200px;
            text-align: center;
            padding: 1.5rem;
            background: white;
            border-radius: var(--radius-large);
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .step-number {
            width: 40px;
            height: 40px;
            background-color: var(--color-primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 1rem;
            font-size: 1.125rem;
        }
        .process-step h4 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
        }
        /* 常见问题 (FAQ) */
        .faq-section {
            background-color: var(--color-bg-card);
            border-radius: var(--radius-large);
            padding: 2.5rem;
            margin-top: var(--spacing-section-md);
        }
        .faq-section h2 {
            border-bottom: none;
            text-align: center;
            margin-bottom: 2rem;
        }
        .faq-section h2::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .accordion-button {
            font-weight: 600;
            color: var(--color-text-primary);
            background-color: white;
            padding: 1.25rem;
            border-radius: var(--radius-base) !important;
            box-shadow: none !important;
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(10, 102, 194, 0.05);
            color: var(--color-primary);
        }
        .accordion-button:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 0.25rem rgba(10, 102, 194,         }
        .accordion-body {
            padding: 1.25rem;
            color: var(--color-text-secondary);
            background-color: white;
            border-radius: 0 0 var(--radius-base) var(--radius-base);
        }
        .accordion-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-base);
            margin-bottom: 1rem;
            overflow: hidden;
        }
        /* 页脚沿用首页样式 */
        .site-footer {
            background-color: var(--color-bg-dark);
            color: var(--color-text-light);
            padding-top: var(--spacing-section-lg);
            padding-bottom: 2rem;
            margin-top: auto;
        }
        .footer-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: white !important;
            display: inline-flex;
            align-items: center;
            margin-bottom: 1rem;
        }
        .footer-logo i {
            color: var(--color-secondary-1);
            margin-right: 0.5rem;
        }
        .text-muted-light {
            color: rgba(241, 245, 249, 0.7) !important;
        }
        .footer-links h5 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 1.25rem;
            color: white;
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        .footer-links a {
            color: rgba(241, 245, 249, 0.7);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 0.25rem;
        }
        .form-control {
            background-color: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: white;
            border-radius: var(--radius-button);
        }
        .form-control::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .form-control:focus {
            background-color: rgba(255, 255, 255, 0.15);
            border-color: var(--color-primary);
            box-shadow: 0 0 0 0.25rem rgba(10, 102, 194, 0.25);
            color: white;
        }
        .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.5);
            color: rgba(255, 255, 255, 0.8);
            border-radius: var(--radius-button);
        }
        .btn-outline-light:hover {
            background-color: white;
            color: var(--color-bg-dark);
            border-color: white;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.5rem;
            margin-top: 2rem;
            text-align: center;
            color: rgba(241, 245, 249, 0.5);
            font-size: 0.875rem;
        }
        /* 响应式调整 */
        @media (max-width: 991.98px) {
            .category-sidebar {
                flex: 0 0 100%;
                margin-bottom: 2rem;
            }
            .sticky-sidebar {
                position: static;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero .lead {
                font-size: 1.125rem;
            }
            .content-section h2 {
                font-size: 1.75rem;
            }
        }
        @media (max-width: 767.98px) {
            .category-hero {
                padding-top: var(--spacing-section-md);
                padding-bottom: var(--spacing-section-md);
            }
            .feature-card {
                padding: 1.5rem;
            }
            .process-steps {
                flex-direction: column;
            }
            .faq-section {
                padding: 1.5rem;
            }
            .site-footer .row > div {
                margin-bottom: 2rem;
            }
        }
        @media (max-width: 575.98px) {
            .category-hero h1 {
                font-size: 1.75rem;
            }
            .content-section h2 {
                font-size: 1.5rem;
            }
            .feature-card h3 {
                font-size: 1.25rem;
            }
        }