/* roulang page: index */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #93c5fd;
            --secondary: #10b981;
            --secondary-dark: #059669;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-light: #f9fafb;
            --bg-dark: #1f2937;
            --text-dark: #374151;
            --text-light: #f9fafb;
            --text-muted: #6b7280;
            --border: #d1d5db;
            --border-light: #e5e7eb;
            --radius: 0.5rem;
            --radius-lg: 1rem;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
            --shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.1), 0 2px 4px -1px rgba(37, 99, 235, 0.06);
            --shadow-lg: 0 10px 25px -5px rgba(37, 99, 235, 0.1), 0 10px 10px -5px rgba(37, 99, 235, 0.04);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2rem;
            --spacing-xl: 3rem;
            --spacing-xxl: 5rem;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-dark);
            background-color: var(--bg-light);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: var(--spacing-lg);
            padding-right: var(--spacing-lg);
        }
        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding-left: var(--spacing-lg);
            padding-right: var(--spacing-lg);
        }
        .section {
            padding-top: var(--spacing-xxl);
            padding-bottom: var(--spacing-xxl);
        }
        .section-sm {
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }
        .text-center {
            text-align: center;
        }
        .bg-dark {
            background-color: var(--bg-dark);
            color: var(--text-light);
        }
        .bg-gradient-light {
            background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
        }
        .btn {
            display: inline-block;
            padding: 0.75rem 1.75rem;
            border-radius: var(--radius);
            text-decoration: none;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: all 0.3s ease;
            text-align: center;
            font-size: 1rem;
        }
        .btn-primary {
            background-color: var(--primary);
            color: white;
            box-shadow: var(--shadow);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .btn-secondary {
            background-color: var(--secondary);
            color: white;
        }
        .btn-secondary:hover {
            background-color: var(--secondary-dark);
            transform: translateY(-2px);
        }
        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background-color: var(--primary);
            color: white;
        }
        .card {
            background: white;
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
        }
        .card-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: var(--spacing-sm);
        }
        .card-title {
            font-size: 1.5rem;
            margin-bottom: var(--spacing-sm);
            color: var(--text-dark);
        }
        .card-text {
            color: var(--text-muted);
            flex-grow: 1;
        }
        .card-cta {
            margin-top: var(--spacing-md);
            align-self: flex-start;
        }
        h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: var(--spacing-md);
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: var(--spacing-md);
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }
        h4 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: var(--spacing-xs);
        }
        p {
            margin-bottom: var(--spacing-md);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
        }
        .grid {
            display: grid;
            gap: var(--spacing-lg);
        }
        .grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .grid-featured {
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--spacing-lg);
        }
        .highlight {
            background-color: var(--primary-light);
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: var(--radius);
            color: var(--primary-dark);
            font-weight: 600;
            display: inline-block;
        }
        .badge {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            border-radius: 2rem;
            font-size: 0.875rem;
            font-weight: 600;
            margin-right: var(--spacing-xs);
            margin-bottom: var(--spacing-xs);
        }
        .badge-primary {
            background-color: var(--primary);
            color: white;
        }
        .badge-secondary {
            background-color: var(--secondary);
            color: white;
        }
        .badge-accent {
            background-color: var(--accent);
            color: white;
        }
        .stat-card {
            text-align: center;
            padding: var(--spacing-lg);
            border-radius: var(--radius);
            background: white;
            box-shadow: var(--shadow);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: var(--spacing-xs);
        }
        .stat-label {
            font-size: 1rem;
            color: var(--text-muted);
            font-weight: 600;
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: var(--spacing-md);
        }
        .accordion {
            margin-bottom: var(--spacing-sm);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .accordion-header {
            padding: var(--spacing-md);
            background-color: white;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            border-bottom: 1px solid transparent;
        }
        .accordion-header:hover {
            background-color: var(--bg-light);
        }
        .accordion-header.active {
            border-bottom: 1px solid var(--border);
        }
        .accordion-icon {
            transition: transform 0.3s ease;
        }
        .accordion-header.active .accordion-icon {
            transform: rotate(180deg);
        }
        .accordion-content {
            padding: 0 var(--spacing-md);
            max-height: 0;
            overflow: hidden;
            background-color: white;
            transition: all 0.3s ease;
        }
        .accordion-content.show {
            padding: var(--spacing-md);
            max-height: 500px;
        }
        .accordion-content p {
            margin-bottom: 0;
            border-left: 3px solid var(--primary-light);
            padding-left: var(--spacing-sm);
        }
        .form-group {
            margin-bottom: var(--spacing-md);
        }
        .form-label {
            display: block;
            margin-bottom: var(--spacing-xs);
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            font-size: 1rem;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }
        /* 顶部信息条 */
        .top-bar {
            background-color: var(--bg-dark);
            color: var(--text-light);
            padding: 0.5rem 0;
            font-size: 0.875rem;
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-bar a {
            color: var(--primary-light);
        }
        /* 主导航 */
        .main-nav {
            background-color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--primary);
            text-decoration: none;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 900;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: var(--spacing-xl);
            align-items: center;
        }
        .nav-item a {
            color: var(--text-dark);
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-item a:hover {
            text-decoration: none;
            color: var(--primary);
        }
        .nav-item.active a {
            color: var(--primary);
        }
        .nav-item.active a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background-color: var(--primary);
            border-radius: 1px;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            cursor: pointer;
        }
        /* 页脚 */
        .footer {
            background-color: var(--bg-dark);
            color: var(--text-light);
            padding: var(--spacing-xxl) 0 var(--spacing-lg);
        }
        .footer-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: white;
            margin-bottom: var(--spacing-md);
            display: inline-block;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xxl);
        }
        .footer-title {
            font-size: 1.125rem;
            font-weight: 700;
            margin-bottom: var(--spacing-md);
            color: white;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: var(--spacing-sm);
        }
        .footer-links a {
            color: var(--border);
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: white;
            text-decoration: underline;
        }
        .footer-bottom {
            padding-top: var(--spacing-lg);
            border-top: 1px solid #374151;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            font-size: 0.875rem;
            color: var(--text-muted);
        }
        /* 响应式 */
        @media (max-width: 1024px) {
            .grid-featured {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-lg);
            }
            h1 {
                font-size: 2rem;
            }
           h2 {
                font-size: 1.75rem;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding-top: var(--spacing-xl);
                padding-bottom: var(--spacing-xl);
            }
            .grid-2, .grid-3, .grid-4, .grid-featured {
                grid-template-columns: 1fr;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: white;
                flex-direction: column;
                padding: var(--spacing-lg);
                box-shadow: var(--shadow-lg);
                gap: var(--spacing-md);
            }
            .nav-menu.show {
                display: flex;
            }
            .mobile-menu-btn {
                display: block;
            }
            .hero .grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }
            .footer-bottom {
                flex-direction: column;
                gap: var(--spacing-md);
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding-left: var(--spacing-md);
                padding-right: var(--spacing-md);
            }
            h1 {
                font-size: 1.75rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }

/* roulang page: category1 */
:root {
        --color-primary: #2563EB;
        --color-primary-dark: #1d4ed8;
        --color-secondary: #10B981;
        --color-accent: #F59E0B;
        --color-background: #F9FAFB;
        --color-surface: #FFFFFF;
        --color-text: #374151;
        --color-text-light: #6B7280;
        --color-border: #D1D5DB;
        --color-footer-bg: #1F2937;
        --color-footer-text: #D1D5DB;
        --radius: 0.5rem;
        --shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.1), 0 2px 4px -1px rgba(37, 99, 235, 0.06);
        --shadow-hover: 0 10px 15px -3px rgba(37, 99, 235, 0.1), 0 4px 6px -2px rgba(37, 99, 235, 0.05);
        --spacing-xs: 0.5rem;
        --spacing-sm: 1rem;
        --spacing-md: 1.5rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
        --spacing-xxl: 5rem;
        --container-max: 1280px;
    }
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
        color: var(--color-text);
        background-color: var(--color-background);
        line-height: 1.6;
        font-size: 16px;
    }
    a {
        color: var(--color-primary);
        text-decoration: none;
        transition: color 0.2s ease;
    }
    a:hover {
        color: var(--color-primary-dark);
        text-decoration: underline;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    .container {
        width: 100%;
        max-width: var(--container-max);
        margin: 0 auto;
        padding-left: var(--spacing-lg);
        padding-right: var(--spacing-lg);
    }
    /* 导航 - 复用首页结构，调整active状态 */
    .top-info-bar {
        background-color: #111827;
        color: white;
        font-size: 0.875rem;
        padding: 0.5rem 0;
    }
    .top-info-bar .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .top-info-bar a {
        color: var(--color-footer-text);
    }
    .main-nav {
        background-color: var(--color-surface);
        box-shadow: var(--shadow);
        position: sticky;
        top: 0;
        z-index: 1000;
    }
    .main-nav .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding-top: var(--spacing-sm);
        padding-bottom: var(--spacing-sm);
        position: relative;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: var(--spacing-sm);
        font-weight: 700;
        font-size: 1.5rem;
        color: var(--color-primary);
    }
    .logo-icon {
        background: linear-gradient(135deg, var(--color-primary), #3B82F6);
        color: white;
        width: 2.5rem;
        height: 2.5rem;
        border-radius: var(--radius);
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 800;
    }
    .mobile-menu-btn {
        display: none;
        background: none;
        border: none;
        font-size: 1.5rem;
        color: var(--color-text);
        cursor: pointer;
    }
    .nav-menu {
        display: flex;
        list-style: none;
        align-items: center;
        gap: var(--spacing-xl);
    }
    .nav-item a {
        color: var(--color-text);
        font-weight: 500;
        padding: 0.5rem 0;
        position: relative;
    }
    .nav-item.active a {
        color: var(--color-primary);
        font-weight: 600;
    }
    .nav-item.active a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 3px;
        background-color: var(--color-primary);
        border-radius: 2px;
    }
    .nav-item a:hover {
        color: var(--color-primary);
        text-decoration: none;
    }
    .btn {
        display: inline-block;
        padding: 0.75rem 1.5rem;
        border-radius: var(--radius);
        font-weight: 600;
        text-align: center;
        cursor: pointer;
        border: none;
        transition: all 0.3s ease;
    }
    .btn-primary {
        background-color: var(--color-primary);
        color: white;
    }
    .btn-primary:hover {
        background-color: var(--color-primary-dark);
        transform: translateY(-2px);
        box-shadow: var(--shadow-hover);
        text-decoration: none;
    }
    /* 分类页 Hero */
    .category-hero {
        background: linear-gradient(rgba(249, 250, 251, 0.9), rgba(249, 250, 251, 0.95)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
        padding: var(--spacing-xxl) 0;
        text-align: center;
    }
    .category-hero h1 {
        font-size: 3rem;
        color: var(--color-primary);
        margin-bottom: var(--spacing-md);
        line-height: 1.2;
    }
    .category-hero p {
        font-size: 1.25rem;
        color: var(--color-text-light);
        max-width: 800px;
        margin: 0 auto var(--spacing-xl);
    }
    .hero-stats {
        display: flex;
        justify-content: center;
        gap: var(--spacing-xl);
        flex-wrap: wrap;
        margin-top: var(--spacing-xl);
    }
    .stat-card {
        background: var(--color-surface);
        padding: var(--spacing-lg);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        text-align: center;
        min-width: 180px;
    }
    .stat-number {
        font-size: 2.5rem;
        font-weight: 700;
        color: var(--color-primary);
        display: block;
        line-height: 1;
    }
    .stat-label {
        color: var(--color-text-light);
        font-size: 0.9rem;
        margin-top: var(--spacing-xs);
    }
    /* 解决方案网格 */
    .solutions-section {
        padding: var(--spacing-xxl) 0;
    }
    .section-title {
        text-align: center;
        font-size: 2.5rem;
        margin-bottom: var(--spacing-xl);
        color: var(--color-primary);
    }
    .solutions-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: var(--spacing-lg);
        margin-bottom: var(--spacing-xxl);
    }
    .solution-card {
        background: var(--color-surface);
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .solution-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-hover);
    }
    .solution-img {
        height: 180px;
        background-color: #E5E7EB;
        overflow: hidden;
    }
    .solution-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }
    .solution-card:hover .solution-img img {
        transform: scale(1.05);
    }
    .solution-content {
        padding: var(--spacing-lg);
    }
    .solution-content h3 {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-sm);
        color: var(--color-text);
    }
    .solution-content p {
        color: var(--color-text-light);
        margin-bottom: var(--spacing-md);
    }
    .solution-tags {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
        margin-bottom: var(--spacing-md);
    }
    .tag {
        background-color: #DBEAFE;
        color: var(--color-primary);
        padding: 0.25rem 0.75rem;
        border-radius: 1rem;
        font-size: 0.875rem;
        font-weight: 500;
    }
    .solution-link {
        color: var(--color-primary);
        font-weight: 600;
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
    }
    .solution-link:hover {
        text-decoration: underline;
    }
    /* 流程展示 */
    .workflow-section {
        padding: var(--spacing-xxl) 0;
        background-color: var(--color-surface);
    }
    .workflow-steps {
        display: flex;
        justify-content: space-between;
        position: relative;
        max-width: 1000px;
        margin: 0 auto;
        flex-wrap: wrap;
        gap: var(--spacing-lg);
    }
    .workflow-steps::before {
        content: '';
        position: absolute;
        top: 2.5rem;
        left: 10%;
        width: 80%;
        height: 2px;
        background-color: var(--color-border);
        z-index: 1;
    }
    .step {
        text-align: center;
        flex: 1;
        min-width: 180px;
        position: relative;
        z-index: 2;
    }
    .step-number {
        width: 5rem;
        height: 5rem;
        background-color: var(--color-primary);
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        font-weight: 700;
        margin: 0 auto var(--spacing-md);
        border: 4px solid var(--color-surface);
        box-shadow: var(--shadow);
    }
    .step h4 {
        margin-bottom: var(--spacing-sm);
        color: var(--color-text);
    }
    .step p {
        color: var(--color-text-light);
        font-size: 0.95rem;
    }
    /* FAQ */
    .faq-section {
        padding: var(--spacing-xxl) 0;
    }
    .faq-container {
        max-width: 800px;
        margin: 0 auto;
    }
    .faq-item {
        background: var(--color-surface);
        border-radius: var(--radius);
        margin-bottom: var(--spacing-sm);
        box-shadow: var(--shadow);
        overflow: hidden;
    }
    .faq-question {
        padding: var(--spacing-lg);
        font-weight: 600;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        color: var(--color-text);
        transition: background-color 0.2s ease;
    }
    .faq-question:hover {
        background-color: #F3F4F6;
    }
    .faq-question i {
        transition: transform 0.3s ease;
    }
    .faq-answer {
        padding: 0 var(--spacing-lg);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
        color: var(--color-text-light);
        border-left: 4px solid transparent;
    }
    .faq-item.active .faq-answer {
        max-height: 500px;
        padding-bottom: var(--spacing-lg);
        border-left-color: var(--color-primary);
    }
    .faq-item.active .faq-question i {
        transform: rotate(180deg);
    }
    /* CTA */
    .cta-section {
        padding: var(--spacing-xxl) 0;
        background: linear-gradient(135deg, var(--color-primary), #3B82F6);
        color: white;
        text-align: center;
    }
    .cta-section h2 {
        font-size: 2.5rem;
        margin-bottom: var(--spacing-md);
    }
    .cta-section p {
        font-size: 1.125rem;
        margin-bottom: var(--spacing-xl);
        opacity: 0.9;
        max-width: 700px;
        margin-left: auto;
        margin-right: auto;
    }
    .cta-section .btn {
        background-color: white;
        color: var(--color-primary);
        font-size: 1.125rem;
        padding: 1rem 2.5rem;
    }
    .cta-section .btn:hover {
        background-color: #F0F9FF;
        transform: translateY(-3px);
    }
    /* 页脚 - 复用 */
    .footer {
        background-color: var(--color-footer-bg);
        color: var(--color-footer-text);
        padding: var(--spacing-xxl) 0 var(--spacing-lg);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: var(--spacing-xl);
        margin-bottom: var(--spacing-xl);
    }
    .footer-logo {
        display: inline-flex;
        align-items: center;
        gap: var(--spacing-sm);
        font-size: 1.5rem;
        font-weight: 700;
        color: white;
        margin-bottom: var(--spacing-md);
    }
    .footer-logo i {
        color: var(--color-primary);
    }
    .footer-title {
        color: white;
        margin-bottom: var(--spacing-md);
        font-size: 1.125rem;
    }
    .footer-links {
        list-style: none;
    }
    .footer-links li {
        margin-bottom: var(--spacing-sm);
    }
    .footer-links a {
        color: var(--color-footer-text);
    }
    .footer-links a:hover {
        color: white;
        text-decoration: underline;
    }
    .footer-bottom {
        border-top: 1 solid rgba(255,255,255,0.1);
        padding-top: var(--spacing-lg);
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        font-size: 0.9rem;
    }
    /* 响应式 */
    @media (max-width: 1024px) {
        .category-hero h1 {
            font-size: 2.5rem;
        }
        .workflow-steps::before {
            display: none;
        }
        .workflow-steps {
            flex-direction: column;
            align-items: center;
            gap: var(--spacing-xl);
        }
        .step {
            min-width: 100%;
        }
    }
    @media (max-width: 768px) {
        :root {
            --spacing-xxl: 3rem;
        }
        .mobile-menu-btn {
            display: block;
        }
        .nav-menu {
            position: fixed;
            top: 70px;
            right: -100%;
            flex-direction: column;
            background: var(--color-surface);
            width: 80%;
            max-width: 300px;
            height: calc(100vh - 70px);
            box-shadow: -5px 0 15px rgba(0,0,0,0.1);
            padding: var(--spacing-lg);
            transition: right 0.3s ease;
            gap: 0;
            align-items: stretch;
        }
        .nav-menu.active {
            right: 0;
        }
        .nav-item {
            padding: var(--spacing-md) 0;
            border-bottom: 1px solid var(--color-border);
        }
        .nav-item a {
            display: block;
        }
        .nav-menu .btn {
            margin-top: var(--spacing-md);
        }
        .category-hero h1 {
            font-size: 2rem;
        }
        .hero-stats {
            gap: var(--spacing-md);
        }
        .stat-card {
            min-width: 140px;
            padding: var(--spacing-md);
        }
        .solutions-grid {
            grid-template-columns: 1fr;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            text-align: center;
        }
        .footer-bottom {
            flex-direction: column;
            gap: var(--spacing-md);
            text-align: center;
        }
    }
    @media (max-width: 520px) {
        .container {
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }
        .category-hero h1 {
            font-size: 1.75rem;
        }
        .section-title {
            font-size: 2rem;
        }
        .hero-stats {
            flex-direction: column;
            align-items: center;
        }
    }