:root {
      --primary: #0052d9;
      --primary-hover: #003ebd;
      --secondary: #00a6ff;
      --dark: #0f172a;
      --light: #f8fafc;
      --gray: #64748b;
      --border: #e2e8f0;
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      --shadow: 0 10px 30px -10px rgba(0, 82, 217, 0.1);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-family: var(--font);
      color: var(--dark);
      background-color: var(--light);
    }

    body {
      overflow-x: hidden;
      line-height: 1.6;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

    ul {
      list-style: none;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 头部导航 */
    header {
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }

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

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

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

    .logo-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
    }

    .nav-links {
      display: flex;
      gap: 20px;
      align-items: center;
    }

    .nav-links a {
      font-size: 14px;
      font-weight: 500;
      color: var(--dark);
      padding: 5px 10px;
      border-radius: 4px;
    }

    .nav-links a:hover {
      color: var(--primary);
      background-color: rgba(0, 82, 217, 0.05);
    }

    .nav-btn {
      background-color: var(--primary);
      color: #fff !important;
      padding: 8px 16px !important;
      border-radius: 6px;
      font-weight: 600;
    }

    .nav-btn:hover {
      background-color: var(--primary-hover);
    }

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

    .menu-toggle span {
      width: 25px;
      height: 3px;
      background-color: var(--dark);
      border-radius: 2px;
      transition: var(--transition);
    }

    /* 1. Hero 首页 (首屏无图) */
    .hero {
      background: linear-gradient(135deg, #e0f2fe 0%, #dbeafe 50%, #eff6ff 100%);
      padding: 100px 0 80px 0;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      width: 300px;
      height: 300px;
      background: rgba(0, 166, 255, 0.15);
      border-radius: 50%;
      top: -100px;
      right: -50px;
      filter: blur(80px);
    }

    .hero::after {
      content: '';
      position: absolute;
      width: 400px;
      height: 400px;
      background: rgba(0, 82, 217, 0.1);
      border-radius: 50%;
      bottom: -150px;
      left: -100px;
      filter: blur(100px);
    }

    .hero-tag {
      display: inline-block;
      background-color: #fff;
      border: 1px solid var(--primary);
      color: var(--primary);
      padding: 6px 16px;
      border-radius: 50px;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: 0 4px 10px rgba(0, 82, 217, 0.05);
    }

    .hero h1 {
      font-size: 40px;
      line-height: 1.3;
      color: var(--dark);
      margin-bottom: 20px;
      font-weight: 800;
    }

    .hero p {
      font-size: 18px;
      color: var(--gray);
      max-width: 800px;
      margin: 0 auto 40px auto;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 20px;
      position: relative;
      z-index: 10;
    }

    .btn-main {
      background-color: var(--primary);
      color: #fff;
      padding: 14px 32px;
      border-radius: 8px;
      font-size: 16px;
      font-weight: 600;
      box-shadow: 0 8px 20px rgba(0, 82, 217, 0.2);
    }

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

    .btn-sub {
      background-color: #fff;
      color: var(--dark);
      border: 1px solid var(--border);
      padding: 14px 32px;
      border-radius: 8px;
      font-size: 16px;
      font-weight: 600;
    }

    .btn-sub:hover {
      background-color: #f1f5f9;
      transform: translateY(-2px);
    }

    /* 数据指标卡片 */
    .stats-section {
      margin-top: -40px;
      position: relative;
      z-index: 20;
      padding-bottom: 60px;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .stat-card {
      background-color: #fff;
      border-radius: 12px;
      padding: 30px 20px;
      text-align: center;
      box-shadow: var(--shadow);
      border: 1px solid rgba(0, 82, 217, 0.05);
    }

    .stat-num {
      font-size: 36px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 5px;
    }

    .stat-title {
      font-size: 14px;
      color: var(--gray);
      font-weight: 500;
    }

    /* 页面通用标题结构 */
    .section-title {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-title h2 {
      font-size: 32px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 12px;
    }

    .section-title p {
      font-size: 16px;
      color: var(--gray);
      max-width: 600px;
      margin: 0 auto;
    }

    /* 模块样式 */
    section {
      padding: 80px 0;
      background-color: #fff;
    }

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

    /* 2. 关于我们 + 18. AI 术语百科 */
    .about-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: start;
    }

    .about-content h3 {
      font-size: 24px;
      color: var(--primary);
      margin-bottom: 15px;
    }

    .about-text {
      font-size: 16px;
      color: var(--dark);
      line-height: 1.8;
      margin-bottom: 20px;
    }

    .about-highlights {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 30px;
    }

    .highlight-item {
      background: #f8fafc;
      padding: 15px;
      border-left: 4px solid var(--primary);
      border-radius: 0 8px 8px 0;
    }

    .highlight-item h4 {
      font-size: 15px;
      margin-bottom: 5px;
    }

    .highlight-item p {
      font-size: 13px;
      color: var(--gray);
    }

    .wiki-card {
      background: linear-gradient(135deg, #0052d9 0%, #002e7d 100%);
      color: #fff;
      border-radius: 12px;
      padding: 30px;
      box-shadow: var(--shadow);
    }

    .wiki-card h3 {
      font-size: 20px;
      margin-bottom: 15px;
      border-bottom: 1px solid rgba(255,255,255,0.2);
      padding-bottom: 10px;
    }

    .wiki-item {
      margin-bottom: 15px;
    }

    .wiki-item:last-child {
      margin-bottom: 0;
    }

    .wiki-word {
      font-weight: 700;
      color: var(--secondary);
    }

    .wiki-desc {
      font-size: 13px;
      opacity: 0.9;
    }

    /* 3. 全平台AIGC服务 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .service-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 30px;
      transition: var(--transition);
    }

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

    .service-icon {
      width: 50px;
      height: 50px;
      background: rgba(0, 82, 217, 0.1);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary);
      font-size: 24px;
      font-weight: bold;
    }

    .service-card h3 {
      font-size: 20px;
      margin-bottom: 10px;
    }

    .service-card p {
      color: var(--gray);
      font-size: 14px;
      margin-bottom: 20px;
    }

    .model-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .model-tag {
      font-size: 11px;
      background: var(--light);
      padding: 3px 8px;
      border-radius: 4px;
      border: 1px solid #e2e8f0;
    }

    /* 4. 一站式AIGC制作 */
    .production-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .prod-card {
      background: #fff;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0,0,0,0.05);
      transition: var(--transition);
      border: 1px solid var(--border);
    }

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

    .prod-info {
      padding: 20px;
    }

    .prod-info h3 {
      font-size: 18px;
      margin-bottom: 8px;
    }

    .prod-info p {
      font-size: 13px;
      color: var(--gray);
    }

    /* 5. 全行业解决方案 */
    .sol-tab-container {
      display: flex;
      flex-direction: column;
      gap: 30px;
    }

    .sol-tabs {
      display: flex;
      justify-content: center;
      gap: 15px;
    }

    .sol-tab-btn {
      padding: 10px 24px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 30px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
    }

    .sol-tab-btn.active, .sol-tab-btn:hover {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }

    .sol-content {
      background: #fff;
      border-radius: 16px;
      padding: 40px;
      box-shadow: var(--shadow);
      display: none;
    }

    .sol-content.active {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      align-items: center;
    }

    .sol-detail h3 {
      font-size: 24px;
      margin-bottom: 15px;
    }

    .sol-detail p {
      color: var(--gray);
      margin-bottom: 25px;
    }

    .sol-list li {
      margin-bottom: 12px;
      padding-left: 20px;
      position: relative;
    }

    .sol-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      color: var(--primary);
      font-weight: bold;
    }

    .sol-image-placeholder {
      background: linear-gradient(135deg, #e0f2fe 0%, #bfdbfe 100%);
      height: 300px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: var(--primary);
    }

    /* 6. 全国服务网络 */
    .network-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .network-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .network-card {
      background: #fff;
      padding: 20px;
      border-radius: 8px;
      border: 1px solid var(--border);
    }

    .network-card h4 {
      color: var(--primary);
      margin-bottom: 8px;
    }

    .network-card p {
      font-size: 13px;
      color: var(--gray);
    }

    .network-map-area {
      background: radial-gradient(circle, #eff6ff 0%, #dbeafe 100%);
      border-radius: 16px;
      height: 350px;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--border);
      position: relative;
    }

    .network-badge {
      background: var(--primary);
      color: white;
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 14px;
      font-weight: bold;
    }

    /* 7. 标准化AIGC流程 & 8. 技术标准 */
    .workflow-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .wf-step {
      background: #fff;
      border-radius: 12px;
      padding: 30px 20px;
      position: relative;
      border: 1px solid var(--border);
    }

    .wf-step::after {
      content: "➔";
      position: absolute;
      right: -15px;
      top: 50%;
      transform: translateY(-50%);
      font-size: 20px;
      color: var(--primary);
      z-index: 10;
    }

    .wf-step:last-child::after {
      content: "";
    }

    .wf-num {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      margin-bottom: 15px;
    }

    .wf-step h3 {
      font-size: 18px;
      margin-bottom: 10px;
    }

    .wf-step p {
      font-size: 13px;
      color: var(--gray);
    }

    /* 9. 客户案例中心 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .case-card {
      background: #fff;
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    }

    .case-img-wrap {
      aspect-ratio: 16/10;
      overflow: hidden;
      background: #f1f5f9;
    }

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

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

    .case-body {
      padding: 20px;
    }

    .case-tag {
      font-size: 12px;
      color: var(--primary);
      background: rgba(0,82,217,0.08);
      padding: 3px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 10px;
    }

    .case-body h3 {
      font-size: 16px;
      margin-bottom: 8px;
    }

    .case-body p {
      font-size: 13px;
      color: var(--gray);
    }

    /* 10. 对比评测 */
    .compare-section {
      background: linear-gradient(180deg, #f8fafc 0%, #eff6ff 100%);
    }

    .compare-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.5fr;
      gap: 40px;
      align-items: center;
    }

    .score-card {
      background: #fff;
      border-radius: 16px;
      padding: 40px;
      text-align: center;
      box-shadow: var(--shadow);
      border: 2px solid var(--primary);
    }

    .score-stars {
      color: #fbbf24;
      font-size: 28px;
      margin-bottom: 15px;
    }

    .score-num {
      font-size: 72px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .score-total {
      font-size: 20px;
      color: var(--gray);
      margin-bottom: 10px;
    }

    .score-label {
      font-size: 18px;
      font-weight: 700;
    }

    .compare-table-wrapper {
      background: #fff;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0,0,0,0.05);
      border: 1px solid var(--border);
    }

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

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border);
      font-size: 14px;
    }

    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
    }

    .compare-table td:nth-child(2) {
      font-weight: 600;
      color: var(--primary);
    }

    /* 12. Token比价参考 */
    .pricing-table-container {
      background: #fff;
      border-radius: 12px;
      border: 1px solid var(--border);
      overflow-x: auto;
    }

    .pricing-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 800px;
    }

    .pricing-table th, .pricing-table td {
      padding: 15px 20px;
      text-align: left;
      border-bottom: 1px solid var(--border);
      font-size: 14px;
    }

    .pricing-table th {
      background: var(--light);
      font-weight: 700;
    }

    .pricing-table tr:hover {
      background: rgba(0, 82, 217, 0.02);
    }

    .price-low {
      color: #10b981;
      font-weight: bold;
    }

    /* 13. 职业技术培训 + 14. 人工智能培训 */
    .training-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .train-card {
      background: #fff;
      border-radius: 12px;
      border: 1px solid var(--border);
      padding: 30px;
      position: relative;
      display: flex;
      flex-direction: column;
    }

    .train-badge {
      position: absolute;
      top: 20px;
      right: 20px;
      background: rgba(0, 82, 217, 0.08);
      color: var(--primary);
      font-size: 11px;
      padding: 4px 10px;
      border-radius: 4px;
      font-weight: 600;
    }

    .train-card h3 {
      font-size: 18px;
      margin: 15px 0 10px 0;
    }

    .train-card p {
      font-size: 13px;
      color: var(--gray);
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .train-footer {
      border-top: 1px solid var(--border);
      padding-top: 15px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
    }

    /* 21. 加盟代理 */
    .agency-box {
      background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
      border-radius: 16px;
      padding: 50px;
      border: 1px solid rgba(0, 82, 217, 0.1);
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }

    .agency-content h3 {
      font-size: 28px;
      margin-bottom: 15px;
      color: var(--primary);
    }

    .agency-content p {
      margin-bottom: 25px;
      color: var(--dark);
    }

    .agency-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 15px;
      margin-bottom: 30px;
    }

    .agency-feat-item {
      background: #fff;
      padding: 12px;
      border-radius: 8px;
      font-size: 13px;
      font-weight: 600;
      box-shadow: 0 2px 5px rgba(0,0,0,0.02);
    }

    .agency-action {
      background: #fff;
      padding: 30px;
      border-radius: 12px;
      box-shadow: var(--shadow);
      text-align: center;
    }

    .agency-action h4 {
      margin-bottom: 10px;
      font-size: 16px;
    }

    /* 15. 帮助中心 + 16. FAQ + 17. 常见问题自助排查 */
    .faq-container {
      max-width: 800px;
      margin: 0 auto;
    }

    .faq-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
    }

    .faq-header {
      padding: 20px;
      background: #fff;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      transition: var(--transition);
    }

    .faq-header:hover {
      background: #f8fafc;
      color: var(--primary);
    }

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

    .faq-body {
      padding: 0 20px;
      max-height: 0;
      overflow: hidden;
      transition: var(--transition);
      background: #f8fafc;
      font-size: 14px;
      color: var(--gray);
    }

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

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

    /* 6条用户评论 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .testi-card {
      background: #fff;
      border-radius: 12px;
      padding: 30px;
      box-shadow: 0 4px 15px rgba(0,0,0,0.03);
      border: 1px solid var(--border);
    }

    .testi-header {
      display: flex;
      align-items: center;
      gap: 15px;
      margin-bottom: 15px;
    }

    .testi-avatar {
      width: 45px;
      height: 45px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 18px;
    }

    .testi-meta h4 {
      font-size: 15px;
    }

    .testi-meta span {
      font-size: 12px;
      color: var(--gray);
    }

    .testi-body {
      font-size: 14px;
      color: var(--dark);
      line-height: 1.6;
    }

    /* 19. 行业资讯 / 知识库 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
    }

    .art-card {
      background: #fff;
      border-radius: 8px;
      border: 1px solid var(--border);
      padding: 20px;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .art-card h4 {
      font-size: 14px;
      margin-bottom: 10px;
      line-height: 1.4;
      flex-grow: 1;
    }

    .art-link {
      font-size: 12px;
      color: var(--primary);
      font-weight: 600;
    }

    .art-link:hover {
      text-decoration: underline;
    }

    /* 11. 智能需求匹配 + 20. 联系我们 (表单) */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 50px;
    }

    .contact-info {
      padding-right: 20px;
    }

    .contact-info h3 {
      font-size: 24px;
      margin-bottom: 20px;
    }

    .contact-details {
      margin-bottom: 30px;
    }

    .contact-detail-item {
      display: flex;
      align-items: center;
      gap: 15px;
      margin-bottom: 15px;
    }

    .contact-icon {
      font-size: 20px;
      color: var(--primary);
      width: 40px;
      height: 40px;
      background: rgba(0, 82, 217, 0.05);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .qr-area {
      display: flex;
      gap: 20px;
      align-items: center;
      background: #f8fafc;
      padding: 20px;
      border-radius: 12px;
      border: 1px solid var(--border);
    }

    .qr-img {
      width: 100px;
      height: 100px;
      object-fit: cover;
      border-radius: 6px;
    }

    .qr-text p {
      font-size: 13px;
      color: var(--gray);
    }

    .contact-form-card {
      background: #fff;
      padding: 40px;
      border-radius: 16px;
      box-shadow: var(--shadow);
      border: 1px solid var(--border);
    }

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

    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px;
      border: 1px solid var(--border);
      border-radius: 6px;
      font-family: inherit;
      font-size: 14px;
      transition: var(--transition);
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(0, 82, 217, 0.1);
    }

    .btn-submit {
      width: 100%;
      background: var(--primary);
      color: #fff;
      padding: 14px;
      border: none;
      border-radius: 6px;
      font-weight: bold;
      cursor: pointer;
      font-size: 15px;
      transition: var(--transition);
    }

    .btn-submit:hover {
      background: var(--primary-hover);
    }

    /* 友情链接与页脚 */
    .links-section {
      background: #f8fafc;
      padding: 40px 0;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .links-container {
      display: flex;
      flex-wrap: wrap;
      gap: 15px;
      align-items: center;
    }

    .links-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--gray);
      margin-right: 15px;
    }

    .links-container a {
      font-size: 13px;
      color: var(--gray);
      background: #fff;
      padding: 5px 12px;
      border-radius: 4px;
      border: 1px solid var(--border);
    }

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

    footer {
      background-color: var(--dark);
      color: #94a3b8;
      padding: 60px 0 30px 0;
      font-size: 14px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr repeat(3, 1fr);
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand p {
      margin-top: 15px;
      font-size: 13px;
      line-height: 1.8;
    }

    .footer-column h4 {
      color: #fff;
      font-size: 15px;
      margin-bottom: 20px;
    }

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

    .footer-column ul li a:hover {
      color: #fff;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
    }

    /* 浮动客服 */
    .float-contact {
      position: fixed;
      right: 20px;
      bottom: 20px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-item {
      width: 50px;
      height: 50px;
      background: var(--primary);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 15px rgba(0,0,0,0.15);
      cursor: pointer;
      font-weight: bold;
      position: relative;
    }

    .float-item:hover .float-tooltip {
      opacity: 1;
      visibility: visible;
      transform: translateX(0);
    }

    .float-tooltip {
      position: absolute;
      right: 60px;
      background: #fff;
      color: var(--dark);
      padding: 15px;
      border-radius: 8px;
      box-shadow: var(--shadow);
      width: 180px;
      opacity: 0;
      visibility: hidden;
      transform: translateX(10px);
      transition: var(--transition);
      border: 1px solid var(--border);
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid, .production-grid, .cases-grid, .training-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid, .network-container, .compare-wrapper, .agency-box, .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .workflow-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .wf-step::after {
        display: none;
      }
      .articles-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
        border-top: 1px solid var(--border);
      }
      .nav-links.active {
        display: flex;
      }
      .menu-toggle {
        display: flex;
      }
      .hero h1 {
        font-size: 28px;
      }
      .stats-grid, .services-grid, .production-grid, .cases-grid, .training-grid, .testimonials-grid, .workflow-timeline, .articles-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
      .sol-content.active {
        grid-template-columns: 1fr;
      }
    }