:root {
            --bg-main: #f8fafc;
            --bg-card: #ffffff;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --color-primary: #2563eb;    /* 科技蓝 */
            --color-secondary: #f59e0b;  /* 耀眼黄 */
            --color-accent: #8b5cf6;     /* 极光紫 */
            --color-success: #10b981;    /* 极光绿 */
            --border-color: #e2e8f0;
            --max-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        /* 顶部导航 */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 70px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            text-decoration: none;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            padding: 6px 12px;
            border-radius: 6px;
        }

        .nav-link:hover {
            color: var(--color-primary);
            background: rgba(37, 99, 211, 0.05);
        }

        .header-btn {
            display: inline-block;
            background: var(--color-primary);
            color: #ffffff;
            padding: 8px 16px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            border: 2px solid transparent;
        }

        .header-btn:hover {
            background: #1d4ed8;
            transform: translateY(-1px);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 5px;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background: var(--text-primary);
            transition: var(--transition);
        }

        /* 页面主要区域间距 */
        section {
            padding: 80px 0;
            scroll-margin-top: 70px;
        }

        /* 大气排版标题 */
        .section-title {
            text-align: center;
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-primary);
            position: relative;
        }

        .section-title span {
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto 48px auto;
        }

        /* 1. 首页 (Hero) - 首屏绝无图片 */
        .hero {
            padding-top: 140px;
            padding-bottom: 80px;
            background: radial-gradient(circle at 90% 10%, rgba(139, 92, 246, 0.08) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(37, 99, 211, 0.08) 0%, transparent 40%);
            text-align: center;
        }

        .hero-tag {
            display: inline-block;
            background: rgba(37, 99, 211, 0.1);
            color: var(--color-primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 24px;
            letter-spacing: 1px;
            border: 1px solid rgba(37, 99, 211, 0.2);
        }

        .hero h1 {
            font-size: 48px;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .hero h1 span {
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent), var(--color-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 800px;
            margin: 0 auto 36px auto;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .btn-main {
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            color: #ffffff;
            padding: 14px 32px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 700;
            font-size: 16px;
            box-shadow: 0 10px 20px -5px rgba(37, 99, 211, 0.4);
            transition: var(--transition);
        }

        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 30px -5px rgba(37, 99, 211, 0.5);
        }

        .btn-sub {
            background: #ffffff;
            color: var(--text-primary);
            border: 2px solid var(--border-color);
            padding: 14px 32px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 700;
            font-size: 16px;
            transition: var(--transition);
        }

        .btn-sub:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: translateY(-2px);
        }

        /* 首页数据指标卡片 */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 24px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 16px;
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--color-primary);
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
        }

        .stat-val {
            font-size: 36px;
            font-weight: 800;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 600;
        }

        /* 2. 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--color-primary);
        }

        .about-text p {
            color: var(--text-secondary);
            margin-bottom: 20px;
            font-size: 15px;
        }

        .about-badge-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .about-badge {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 16px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .about-badge-icon {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
        }

        /* 3. 全平台AIGC服务 & 4. 一站式AIGC制作 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--color-primary);
            opacity: 0;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.08);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            font-size: 40px;
            margin-bottom: 20px;
            display: inline-block;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .service-card p {
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 16px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .service-tags span {
            font-size: 12px;
            background: var(--bg-main);
            color: var(--color-accent);
            padding: 4px 10px;
            border-radius: 6px;
            font-weight: 600;
        }

        /* 模型聚合展示 */
        .model-cloud-wrapper {
            margin-top: 40px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            text-align: center;
        }

        .model-cloud-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 24px;
        }

        .model-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .model-tag {
            font-size: 13px;
            padding: 6px 14px;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            color: var(--text-primary);
            font-weight: 500;
            transition: var(--transition);
        }

        .model-tag:hover {
            background: var(--color-primary);
            color: #ffffff;
            border-color: var(--color-primary);
        }

        /* 5. 全行业解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
        }

        .solution-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            transition: var(--transition);
        }

        .solution-card:hover {
            border-color: var(--color-accent);
            transform: scale(1.02);
        }

        .solution-card h4 {
            font-size: 18px;
            margin-bottom: 8px;
            color: var(--color-accent);
        }

        /* 6. 全国服务网络 */
        .network-section {
            background: #ffffff;
            border-radius: 24px;
            padding: 40px;
            border: 1px solid var(--border-color);
        }

        .network-grid {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
            align-items: center;
        }

        .network-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .network-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px;
            border-radius: 8px;
            background: var(--bg-main);
        }

        .network-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-success);
            box-shadow: 0 0 10px var(--color-success);
        }

        /* 7. 标准化AIGC流程 & 8. 技术标准 */
        .flow-timeline {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            position: relative;
        }

        .flow-step {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            position: relative;
            z-index: 2;
        }

        .step-num {
            font-size: 40px;
            font-weight: 900;
            color: rgba(37, 99, 211, 0.15);
            position: absolute;
            top: 10px;
            right: 15px;
        }

        .flow-step h4 {
            font-size: 16px;
            margin-top: 12px;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .flow-step p {
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* 9. 客户案例中心 - 图片展示区域 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 15px 30px -5px rgba(0, 0, 0, 0.1);
        }

        .case-image-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background: #e2e8f0;
            position: relative;
        }

        .case-image-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .case-info {
            padding: 24px;
        }

        .case-tag {
            display: inline-block;
            background: rgba(139, 92, 246, 0.1);
            color: var(--color-accent);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .case-info h4 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .case-info p {
            color: var(--text-secondary);
            font-size: 14px;
        }

        /* 10. 对比评测 - 必须严格遵循指示 */
        .review-section {
            background: linear-gradient(135deg, rgba(37, 99, 211, 0.03), rgba(139, 92, 246, 0.03));
            border-radius: 24px;
            padding: 48px;
            border: 1px solid var(--border-color);
        }

        .score-board {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .score-big {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .score-num {
            font-size: 64px;
            font-weight: 900;
            color: var(--color-primary);
            line-height: 1;
        }

        .score-star-wrapper {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .score-stars {
            color: var(--color-secondary);
            font-size: 24px;
        }

        .score-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 600;
        }

        .compare-table-wrapper {
            overflow-x: auto;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: #ffffff;
            border-radius: 12px;
            overflow: hidden;
            min-width: 600px;
        }

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }

        .compare-table th {
            background: var(--text-primary);
            color: #ffffff;
            font-weight: 700;
        }

        .compare-table tr:hover {
            background: var(--bg-main);
        }

        .highlight-col {
            color: var(--color-primary);
            font-weight: 700;
        }

        /* 11. 智能需求匹配 (带表单) */
        .demand-section {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 24px;
            padding: 48px;
        }

        .demand-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .demand-form-container h3 {
            font-size: 24px;
            margin-bottom: 24px;
        }

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

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border-color);
            border-radius: 8px;
            font-size: 15px;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(37, 99, 211, 0.1);
        }

        .btn-submit {
            background: var(--color-primary);
            color: #ffffff;
            border: none;
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 700;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
        }

        .btn-submit:hover {
            background: #1d4ed8;
        }

        /* 12. Token比价参考 */
        .token-calc-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
        }

        /* 13. 职业技术培训 & 14. 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .training-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            text-align: center;
            transition: var(--transition);
            border-top: 4px solid var(--color-accent);
        }

        .training-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px -10px rgba(139, 92, 246, 0.2);
        }

        .training-icon {
            font-size: 32px;
            margin-bottom: 16px;
            display: block;
        }

        .training-card h4 {
            font-size: 16px;
            margin-bottom: 8px;
        }

        .training-card p {
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* 15. 帮助中心 & 16. FAQ & 17. 常见问题自助排查 & 18. AI术语百科 */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            font-weight: 700;
            font-size: 15px;
        }

        .faq-icon-toggle {
            font-size: 18px;
            transition: var(--transition);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 20px;
            color: var(--text-secondary);
            font-size: 14px;
        }

        .faq-item.active .faq-body {
            padding-bottom: 20px;
        }

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

        /* 19. 行业资讯 / 知识库 */
        .articles-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .article-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            transition: var(--transition);
        }

        .article-card:hover {
            border-color: var(--color-primary);
            box-shadow: 0 8px 20px -5px rgba(37, 99, 211, 0.1);
        }

        .article-card h4 {
            font-size: 16px;
            margin-bottom: 12px;
        }

        .article-link {
            text-decoration: none;
            color: var(--color-primary);
            font-weight: 700;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* 客户评论卡片 - 6条 */
        .reviews-wrapper {
            margin-top: 60px;
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .user-review-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            position: relative;
        }

        .review-quote {
            font-size: 48px;
            color: rgba(37, 99, 211, 0.1);
            position: absolute;
            top: 10px;
            left: 15px;
            line-height: 1;
        }

        .review-content {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
        }

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

        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-weight: 700;
            font-size: 14px;
        }

        .author-info h5 {
            font-size: 14px;
            margin-bottom: 2px;
        }

        .author-info span {
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* 20. 联系我们 & 21. 加盟代理 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .contact-info-panel {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 24px;
            padding: 40px;
        }

        .contact-methods {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-bottom: 32px;
        }

        .contact-method-card {
            background: var(--bg-main);
            padding: 20px;
            border-radius: 12px;
            text-align: center;
        }

        .contact-method-card h5 {
            font-size: 15px;
            margin-bottom: 8px;
        }

        .contact-method-card p {
            font-size: 13px;
            color: var(--text-secondary);
            word-break: break-all;
        }

        .contact-qr-box {
            text-align: center;
            border-top: 1px solid var(--border-color);
            padding-top: 32px;
        }

        .contact-qr-box img {
            width: 150px;
            height: 150px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 12px;
        }

        .agent-card {
            background: linear-gradient(135deg, var(--text-primary), #1e293b);
            color: #ffffff;
            border-radius: 24px;
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .agent-card h3 {
            font-size: 28px;
            margin-bottom: 16px;
            color: var(--color-secondary);
        }

        .agent-list {
            list-style: none;
            margin-bottom: 32px;
        }

        .agent-list li {
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
        }

        .agent-list li::before {
            content: '✓';
            color: var(--color-success);
            font-weight: 900;
        }

        /* 浮动客服入口 */
        .floating-kefu {
            position: fixed;
            bottom: 40px;
            right: 40px;
            background: var(--color-primary);
            color: #ffffff;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 25px rgba(37, 99, 211, 0.3);
            cursor: pointer;
            z-index: 999;
            transition: var(--transition);
        }

        .floating-kefu:hover {
            transform: scale(1.1);
        }

        .kefu-popup {
            position: absolute;
            bottom: 80px;
            right: 0;
            width: 260px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 20px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            display: none;
            text-align: center;
            color: var(--text-primary);
        }

        .kefu-popup img {
            width: 140px;
            height: 140px;
            margin-bottom: 10px;
        }

        /* 友情链接与页脚 */
        .footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            border-top: 1px solid #1e293b;
        }

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

        .footer-brand h4 {
            color: #ffffff;
            margin-bottom: 16px;
        }

        .footer-links h5 {
            color: #ffffff;
            margin-bottom: 16px;
        }

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

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

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .friend-links-box {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            margin-top: 24px;
        }

        .friend-links-box h5 {
            color: #ffffff;
            margin-bottom: 12px;
            font-size: 14px;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .friend-links a {
            color: #64748b;
            text-decoration: none;
            font-size: 13px;
            transition: var(--transition);
        }

        .friend-links a:hover {
            color: #3b82f6;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
        }

        .ai-page-home-link {
            color: var(--color-primary);
            text-decoration: none;
            font-weight: 700;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .about-grid, .demand-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 36px;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }