:root {
            --primary: #FFD700; /* 鲜黄 */
            --primary-hover: #E6C200;
            --accent-dark: #121212; /* 深黑 */
            --text-main: #2D2D2D;
            --text-light: #5A5A5A;
            --bg-base: #FFFFFF;
            --bg-section: #FAFAFA;
            --bg-card: #FFFFFF;
            --border-color: #EBEBEB;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
            --max-width: 1200px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: var(--bg-base);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

        /* 统一外层居中容器 */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: 80px 0;
            background-color: var(--bg-base);
        }

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

        /* 标题组件 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2rem;
            color: var(--accent-dark);
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
            padding-bottom: 8px;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: all 0.3s ease;
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .logo-area {
            display: flex;
            align-items: center;
        }

        .ai-page-logo {
            height: 40px;
            width: auto;
            object-fit: contain;
        }

        .brand-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-dark);
            margin-left: 10px;
        }

        .nav-menu {
            display: flex;
            gap: 20px;
            align-items: center;
            list-style: none;
        }

        .nav-menu a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 12px;
            border-radius: 4px;
        }

        .nav-menu a:hover {
            background-color: var(--primary);
            color: var(--accent-dark);
        }

        .nav-btn {
            background-color: var(--accent-dark);
            color: var(--primary) !important;
            font-weight: 600 !important;
            border-radius: 4px;
            padding: 8px 16px !important;
        }

        .nav-btn:hover {
            background-color: var(--primary) !important;
            color: var(--accent-dark) !important;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--accent-dark);
            transition: 0.3s;
        }

        /* 占位填充，防固定导航遮挡首屏 */
        .header-placeholder {
            height: 70px;
        }

        /* Hero 首屏 (首屏无图) */
        .hero {
            position: relative;
            background: radial-gradient(circle at 10% 20%, rgba(255, 215, 0, 0.15) 0%, rgba(255, 255, 255, 0) 90%), var(--bg-base);
            padding: 100px 0 120px 0;
            text-align: center;
            border-bottom: 1px solid var(--border-color);
        }

        .hero h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            color: var(--accent-dark);
            margin-bottom: 24px;
            font-weight: 800;
        }

        .hero h1 span {
            background: linear-gradient(120deg, var(--accent-dark) 0%, #000000 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
        }

        .hero .subtitle {
            font-size: 1.25rem;
            color: var(--text-light);
            max-width: 800px;
            margin: 0 auto 40px auto;
        }

        .hero-btn-group {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--accent-dark);
            font-weight: 700;
            font-size: 1.1rem;
            padding: 14px 32px;
            border-radius: 8px;
            border: 2px solid var(--primary);
            box-shadow: 0 4px 14px rgba(255, 215, 0, 0.4);
            cursor: pointer;
        }

        .btn-primary:hover {
            background-color: var(--accent-dark);
            border-color: var(--accent-dark);
            color: var(--primary);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--accent-dark);
            font-weight: 600;
            font-size: 1.1rem;
            padding: 14px 32px;
            border-radius: 8px;
            border: 2px solid var(--accent-dark);
            cursor: pointer;
        }

        .btn-secondary:hover {
            background-color: var(--accent-dark);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* 亮点标签云 */
        .hero-badges {
            margin-top: 50px;
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .badge-item {
            background-color: #FFFEE0;
            border: 1px solid #FFE480;
            color: #665000;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* 数据指标 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: -50px;
            position: relative;
            z-index: 10;
        }

        .stat-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-top: 4px solid var(--primary);
            padding: 30px 20px;
            text-align: center;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-dark);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
            font-weight: 500;
        }

        /* 关于我们与平台介绍 */
        .intro-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .intro-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--accent-dark);
        }

        .intro-text p {
            color: var(--text-light);
            margin-bottom: 16px;
            font-size: 1rem;
        }

        .intro-features {
            list-style: none;
            margin-top: 24px;
        }

        .intro-features li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .intro-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #000;
            background-color: var(--primary);
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: bold;
        }

        .intro-media {
            background-color: #FFFEE0;
            border: 2px dashed var(--primary);
            padding: 40px;
            border-radius: 12px;
            text-align: center;
        }

        .intro-media h4 {
            font-size: 1.4rem;
            margin-bottom: 10px;
            color: var(--accent-dark);
        }

        /* 服务能力卡片 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: bold;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: var(--accent-dark);
        }

        .service-card p {
            font-size: 0.95rem;
            color: var(--text-light);
        }

        /* 支持模型滚动/展示区 */
        .models-box {
            background-color: var(--accent-dark);
            color: #FFFFFF;
            padding: 40px 20px;
            border-radius: 12px;
            text-align: center;
            margin-top: 40px;
        }

        .models-box h4 {
            font-size: 1.2rem;
            margin-bottom: 20px;
            color: var(--primary);
            letter-spacing: 1px;
        }

        .models-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .model-tag {
            background-color: rgba(255,255,255,0.1);
            color: #E0E0E0;
            padding: 6px 14px;
            border-radius: 4px;
            font-size: 0.85rem;
            transition: all 0.2s;
        }

        .model-tag:hover {
            background-color: var(--primary);
            color: var(--accent-dark);
            font-weight: bold;
        }

        /* 制作场景及案例展示 (图文混合版式) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .case-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .case-image-wrapper {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #EEE;
            position: relative;
        }

        .case-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .case-content {
            padding: 24px;
        }

        .case-tag {
            background-color: var(--primary);
            color: var(--accent-dark);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 12px;
        }

        .case-content h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--accent-dark);
        }

        .case-content p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 16px;
        }

        /* 解决方案区 (标签导航形式) */
        .solutions-wrapper {
            display: grid;
            grid-template-columns: 250px 1fr;
            gap: 30px;
        }

        .solution-tabs {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .tab-btn {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 15px 20px;
            text-align: left;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }

        .tab-btn.active, .tab-btn:hover {
            background-color: var(--primary);
            border-color: var(--primary);
            color: var(--accent-dark);
        }

        .solution-content {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
        }

        .solution-panel {
            display: none;
        }

        .solution-panel.active {
            display: block;
        }

        .solution-panel h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--accent-dark);
        }

        .solution-panel p {
            color: var(--text-light);
            margin-bottom: 20px;
        }

        .solution-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .sol-feat-item {
            padding: 10px;
            background-color: var(--bg-section);
            border-left: 3px solid var(--primary);
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* 服务网络 */
        .network-section {
            text-align: center;
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .network-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 6px;
        }

        .network-card h4 {
            color: var(--accent-dark);
            margin-bottom: 6px;
        }

        .network-card p {
            font-size: 0.85rem;
            color: var(--text-light);
        }

        /* 流程步骤与时间线 */
        .process-flow {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 40px;
            position: relative;
            flex-wrap: wrap;
        }

        .process-step {
            flex: 1;
            min-width: 150px;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 24px 16px;
            text-align: center;
            border-radius: 8px;
            position: relative;
        }

        .process-step::after {
            content: '→';
            position: absolute;
            right: -15px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.5rem;
            color: var(--primary);
            z-index: 2;
        }

        .process-step:last-child::after {
            display: none;
        }

        .step-num {
            width: 36px;
            height: 36px;
            background-color: var(--accent-dark);
            color: var(--primary);
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px auto;
        }

        .process-step h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            color: var(--accent-dark);
        }

        .process-step p {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        /* 对比评测板块 */
        .rating-box {
            background-color: #FFFEE0;
            border: 1px solid #FFE480;
            border-radius: 8px;
            padding: 24px;
            margin-bottom: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .rating-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-dark);
        }

        .rating-stars {
            color: #FF9900;
            font-size: 1.5rem;
            font-weight: 700;
        }

        .rating-score {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-dark);
        }

        .compare-table-wrapper {
            width: 100%;
            overflow-x: auto;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

        .compare-table th, .compare-table td {
            padding: 16px;
            border-bottom: 1px solid var(--border-color);
        }

        .compare-table th {
            background-color: var(--accent-dark);
            color: #FFFFFF;
        }

        .compare-table th.highlight {
            background-color: var(--primary);
            color: var(--accent-dark);
        }

        .compare-table tr:hover {
            background-color: #FFFEE8;
        }

        .compare-table td.highlight {
            font-weight: bold;
            color: var(--accent-dark);
            background-color: rgba(255,215,0,0.05);
        }

        /* Token 比价 */
        .price-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .price-card {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 24px;
            background-color: var(--bg-card);
        }

        .price-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 12px;
            margin-bottom: 16px;
        }

        .price-model {
            font-weight: 700;
            font-size: 1.1rem;
        }

        .price-tag {
            background-color: #E2FFDB;
            color: #276A16;
            font-size: 0.75rem;
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: bold;
        }

        .price-body p {
            font-size: 0.9rem;
            margin-bottom: 8px;
            color: var(--text-light);
        }

        .price-body span {
            color: #D32F2F;
            font-weight: 700;
        }

        /* 职业培训组件 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .training-card {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            background-color: var(--bg-card);
            text-align: center;
            transition: all 0.3s;
        }

        .training-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .training-icon {
            font-size: 2rem;
            margin-bottom: 12px;
        }

        .training-card h4 {
            font-size: 1.05rem;
            color: var(--accent-dark);
            margin-bottom: 8px;
        }

        .training-card p {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        /* 需求匹配表单 */
        .form-section-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .form-info h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--accent-dark);
        }

        .form-info p {
            color: var(--text-light);
            margin-bottom: 24px;
        }

        .contact-methods {
            list-style: none;
        }

        .contact-methods li {
            margin-bottom: 16px;
            font-size: 0.95rem;
        }

        .contact-methods strong {
            color: var(--accent-dark);
        }

        .feedback-form {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 8px;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 0.95rem;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
        }

        /* FAQ折叠面板 */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: 6px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-question {
            background-color: var(--bg-card);
            padding: 16px 20px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.2rem;
            color: var(--text-light);
        }

        .faq-item.active .faq-question::after {
            content: '−';
        }

        .faq-answer {
            background-color: var(--bg-section);
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            font-size: 0.9rem;
            color: var(--text-light);
        }

        .faq-item.active .faq-answer {
            padding: 16px 20px;
            max-height: 200px;
            border-top: 1px solid var(--border-color);
        }

        /* 常见问题排查与百科标签 */
        .wiki-section {
            margin-top: 40px;
            padding-top: 40px;
            border-top: 1px dashed var(--border-color);
        }

        .wiki-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .wiki-card h4 {
            margin-bottom: 12px;
            color: var(--accent-dark);
        }

        .wiki-card ul {
            list-style: none;
        }

        .wiki-card li {
            font-size: 0.9rem;
            margin-bottom: 8px;
            position: relative;
            padding-left: 15px;
        }

        .wiki-card li::before {
            content: '•';
            position: absolute;
            left: 0;
            color: var(--primary);
        }

        /* 客户评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .comment-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
        }

        .comment-content {
            font-style: italic;
            font-size: 0.95rem;
            color: var(--text-main);
            margin-bottom: 20px;
        }

        .comment-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .author-avatar {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 0.9rem;
        }

        .author-info h4 {
            font-size: 0.9rem;
            color: var(--accent-dark);
        }

        .author-info p {
            font-size: 0.75rem;
            color: var(--text-light);
        }

        /* 最新资讯 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .news-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 8px;
        }

        .news-card span {
            font-size: 0.75rem;
            color: var(--text-light);
        }

        .news-card h4 {
            font-size: 1.1rem;
            margin: 8px 0 12px 0;
            color: var(--accent-dark);
        }

        .news-card a {
            color: #0066CC;
            font-size: 0.9rem;
            font-weight: 600;
        }

        .news-card a:hover {
            text-decoration: underline;
        }

        /* 加盟代理 */
        .partner-box {
            background-color: var(--accent-dark);
            color: #FFFFFF;
            padding: 60px 40px;
            border-radius: 12px;
            text-align: center;
        }

        .partner-box h3 {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .partner-box p {
            max-width: 700px;
            margin: 0 auto 30px auto;
            color: #D0D0D0;
        }

        /* 侧边浮动客服 & 二维码 */
        .float-service {
            position: fixed;
            right: 20px;
            bottom: 80px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: var(--accent-dark);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            font-size: 0.8rem;
            font-weight: bold;
            text-align: center;
            line-height: 1.2;
            border: none;
            position: relative;
        }

        .float-btn:hover {
            background-color: var(--primary);
            color: var(--accent-dark);
        }

        .qr-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 10px;
            border-radius: 8px;
            box-shadow: var(--shadow-md);
            display: none;
            text-align: center;
            width: 140px;
        }

        .qr-popover img {
            width: 100%;
            height: auto;
        }

        .qr-popover p {
            font-size: 0.75rem;
            color: var(--accent-dark);
            margin-top: 4px;
        }

        .float-btn:hover .qr-popover {
            display: block;
        }

        /* 页脚 */
        footer {
            background-color: var(--accent-dark);
            color: #A0A0A0;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
            border-top: 4px solid var(--primary);
        }

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

        .footer-logo {
            margin-bottom: 16px;
        }

        .footer-col h4 {
            color: #FFFFFF;
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #A0A0A0;
        }

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

        .footer-qr {
            max-width: 120px;
            background-color: #FFF;
            padding: 8px;
            border-radius: 4px;
        }

        .footer-qr img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 友情链接 */
        .friendship-links {
            border-top: 1px solid #333;
            padding-top: 20px;
            margin-top: 20px;
            font-size: 0.8rem;
        }

        .friendship-links a {
            color: #888;
            margin-right: 15px;
            display: inline-block;
        }

        .friendship-links a:hover {
            color: var(--primary);
        }

        .copyright-bar {
            border-top: 1px solid #222;
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .intro-wrapper, .solutions-wrapper, .form-section-wrapper {
                grid-template-columns: 1fr;
            }
            .solution-tabs {
                flex-direction: row;
                overflow-x: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #FFFFFF;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
                box-shadow: var(--shadow-sm);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .process-flow {
                flex-direction: column;
            }
            .process-step::after {
                content: '↓';
                right: auto;
                left: 50%;
                bottom: -20px;
                top: auto;
                transform: translateX(-50%);
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .wiki-grid {
                grid-template-columns: 1fr;
            }
        }