/* 全局重置与基础样式 */
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    :root {
      --primary-color: #0052cc;
      --secondary-color: #00d2fc;
      --accent-color: #00b894;
      --text-dark: #2d3436;
      --text-muted: #636e72;
      --bg-light: #f4f7f6;
      --bg-white: #ffffff;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
      --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
      --shadow-lg: 0 16px 40px rgba(0,0,0,0.12);
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
      --border-radius: 12px;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
      color: var(--text-dark);
      background-color: var(--bg-light);
    }
    body {
      line-height: 1.6;
    }
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    ul {
      list-style: none;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    input, select, textarea, button {
      font-family: inherit;
    }

    /* 顶部导航 */
    header {
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      box-shadow: var(--shadow-sm);
      position: sticky;
      top: 0;
      z-index: 1000;
      height: 70px;
      display: flex;
      align-items: center;
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .logo-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }
    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .nav-menu {
      display: flex;
      gap: 20px;
      align-items: center;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-dark);
      padding: 6px 12px;
      border-radius: 6px;
    }
    .nav-link:hover {
      color: var(--primary-color);
      background-color: rgba(0, 82, 204, 0.05);
    }
    .nav-buttons {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-outline {
      border: 2px solid var(--primary-color);
      color: var(--primary-color);
      padding: 8px 18px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 0.9rem;
    }
    .btn-outline:hover {
      background-color: var(--primary-color);
      color: var(--bg-white);
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      color: var(--bg-white);
      padding: 10px 22px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 0.9rem;
      box-shadow: 0 4px 15px rgba(0, 82, 204, 0.2);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 82, 204, 0.3);
    }
    
    /* 移动端菜单按钮 */
    .menu-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      padding: 4px;
    }
    .menu-toggle span {
      width: 25px;
      height: 3px;
      background-color: var(--text-dark);
      border-radius: 3px;
      transition: var(--transition);
    }

    /* 1. Hero 首屏 - 高亮度鲜活风，且不能使用任何图片 */
    .hero-section {
      position: relative;
      background: radial-gradient(circle at 80% 20%, rgba(0, 210, 252, 0.12) 0%, transparent 50%),
                  radial-gradient(circle at 10% 80%, rgba(0, 184, 148, 0.1) 0%, transparent 40%),
                  linear-gradient(135deg, #ffffff 0%, #f0f6ff 100%);
      padding: 100px 0 80px;
      overflow: hidden;
      text-align: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      background: rgba(0, 82, 204, 0.08);
      color: var(--primary-color);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 0.85rem;
      font-weight: 700;
      margin-bottom: 24px;
      letter-spacing: 1px;
    }
    h1.hero-title {
      font-size: 2.8rem;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    h1.hero-title span {
      background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 700px;
      margin: 0 auto 36px;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-hero-primary {
      background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
      color: #fff;
      padding: 14px 32px;
      font-size: 1.05rem;
      border-radius: 30px;
      font-weight: 700;
      box-shadow: 0 10px 25px rgba(0, 82, 204, 0.25);
    }
    .btn-hero-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 30px rgba(0, 82, 204, 0.35);
    }
    .btn-hero-secondary {
      background-color: #fff;
      border: 2px solid #e2e8f0;
      color: var(--text-dark);
      padding: 14px 32px;
      font-size: 1.05rem;
      border-radius: 30px;
      font-weight: 700;
      box-shadow: var(--shadow-sm);
    }
    .btn-hero-secondary:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
      transform: translateY(-3px);
    }

    /* 装饰性炫彩网格 - 替代图片 */
    .hero-grid-bg {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-top: 50px;
      padding: 0 20px;
    }
    .hero-card-stat {
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.8);
      border-radius: var(--border-radius);
      padding: 20px 30px;
      min-width: 180px;
      box-shadow: var(--shadow-md);
      transition: var(--transition);
    }
    .hero-card-stat:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
    }
    .stat-num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 通用区域排版 */
    section {
      padding: 80px 0;
    }
    section.alt-bg {
      background-color: var(--bg-white);
    }
    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px;
    }
    .section-tag {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--accent-color);
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 12px;
      display: inline-block;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
    }

    /* 2. 关于我们 */
    .about-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .about-content h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--primary-color);
    }
    .about-text {
      color: var(--text-muted);
      margin-bottom: 24px;
      font-size: 1rem;
      line-height: 1.8;
    }
    .about-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .about-feat-item {
      background: var(--bg-light);
      padding: 16px;
      border-radius: 8px;
      border-left: 4px solid var(--accent-color);
    }
    .about-feat-title {
      font-weight: 700;
      font-size: 0.95rem;
      margin-bottom: 6px;
    }
    .about-feat-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .about-right {
      background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
      border-radius: var(--border-radius);
      padding: 40px;
      color: #fff;
      position: relative;
    }
    .about-quote {
      font-size: 1.15rem;
      font-weight: 600;
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .about-author {
      font-size: 0.9rem;
      opacity: 0.9;
    }

    /* 3. 全平台AIGC服务 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
      gap: 30px;
    }
    .service-card {
      background-color: var(--bg-white);
      border-radius: var(--border-radius);
      padding: 36px;
      box-shadow: var(--shadow-sm);
      border: 1px solid rgba(0,0,0,0.03);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(0, 82, 204, 0.15);
    }
    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
      opacity: 0;
      transition: var(--transition);
    }
    .service-card:hover::before {
      opacity: 1;
    }
    .service-icon-box {
      width: 56px;
      height: 56px;
      background-color: rgba(0, 82, 204, 0.08);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 24px;
      color: var(--primary-color);
      font-size: 1.5rem;
    }
    .service-card:hover .service-icon-box {
      background-color: var(--primary-color);
      color: #fff;
    }
    .service-card h3 {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .service-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .model-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .model-tag {
      background-color: var(--bg-light);
      color: var(--text-dark);
      padding: 4px 10px;
      font-size: 0.75rem;
      border-radius: 20px;
      font-weight: 600;
    }

    /* 4. 一站式AIGC制作 & 5. 全行业解决方案 */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }
    .showcase-item {
      background-color: var(--bg-light);
      border-radius: var(--border-radius);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      min-height: 280px;
    }
    .showcase-item.accent-box {
      background: linear-gradient(135deg, rgba(0, 82, 204, 0.04) 0%, rgba(0, 210, 252, 0.04) 100%);
      border: 1px dashed rgba(0, 82, 204, 0.2);
    }
    .showcase-item h4 {
      font-size: 1.4rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--primary-color);
    }
    .showcase-item p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .tag-cloud span {
      background-color: #fff;
      border: 1px solid rgba(0,0,0,0.06);
      padding: 6px 14px;
      font-size: 0.8rem;
      border-radius: 30px;
      font-weight: 600;
    }

    /* 6. 全国服务网络 & 7. 标准化AIGC流程 */
    .flow-network-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
    }
    .flow-steps {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .step-item {
      display: flex;
      gap: 16px;
      background-color: var(--bg-white);
      padding: 20px;
      border-radius: var(--border-radius);
      box-shadow: var(--shadow-sm);
    }
    .step-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background-color: var(--accent-color);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      flex-shrink: 0;
    }
    .step-info h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .step-info p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .network-card {
      background: linear-gradient(135deg, #1e272e 0%, #2f3640 100%);
      color: #fff;
      padding: 40px;
      border-radius: var(--border-radius);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .network-card h4 {
      font-size: 1.6rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--secondary-color);
    }
    .network-dots {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 30px;
    }
    .net-dot {
      background-color: rgba(255,255,255,0.06);
      padding: 12px;
      border-radius: 8px;
      text-align: center;
      border: 1px solid rgba(255,255,255,0.1);
    }
    .net-dot strong {
      display: block;
      color: var(--secondary-color);
      font-size: 1.1rem;
    }
    .net-dot span {
      font-size: 0.75rem;
      opacity: 0.8;
    }

    /* 8. 技术标准 & 18. AI术语百科 */
    .standards-container {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
    }
    .standard-box {
      background-color: var(--bg-white);
      border: 1px solid rgba(0, 82, 204, 0.08);
      border-radius: var(--border-radius);
      padding: 30px;
    }
    .standard-box h4 {
      font-size: 1.15rem;
      color: var(--primary-color);
      margin-bottom: 10px;
      font-weight: 700;
    }
    .standard-box p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 9. 客户案例中心 - 图片规范融入 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .case-card {
      background-color: var(--bg-white);
      border-radius: var(--border-radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      border: 1px solid rgba(0,0,0,0.02);
    }
    .case-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }
    .case-img-wrapper {
      position: relative;
      aspect-ratio: 16 / 10;
      background-color: #e2e8f0;
      overflow: hidden;
    }
    .case-img-wrapper.square {
      aspect-ratio: 1 / 1;
    }
    .case-img-wrapper img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .case-card:hover .case-img-wrapper img {
      transform: scale(1.05);
    }
    .case-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      background-color: rgba(0,0,0,0.7);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 4px;
    }
    .case-info {
      padding: 24px;
    }
    .case-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .case-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 10. 对比评测 */
    .comparison-section {
      background: linear-gradient(135deg, rgba(0, 82, 204, 0.02) 0%, rgba(0, 210, 252, 0.02) 100%);
    }
    .rating-badge {
      background: linear-gradient(135deg, #ff9f43 0%, #ff5252 100%);
      color: #fff;
      padding: 16px 28px;
      border-radius: var(--border-radius);
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      box-shadow: 0 8px 24px rgba(255, 82, 82, 0.2);
      margin-bottom: 30px;
    }
    .rating-score {
      font-size: 2.2rem;
      font-weight: 800;
    }
    .rating-stars {
      color: #ffd200;
      font-size: 1.2rem;
      margin-top: 4px;
    }
    .compare-table-wrapper {
      width: 100%;
      overflow-x: auto;
      background-color: var(--bg-white);
      border-radius: var(--border-radius);
      box-shadow: var(--shadow-sm);
    }
    table.compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 700px;
      text-align: left;
    }
    table.compare-table th, table.compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid #e2e8f0;
      font-size: 0.95rem;
    }
    table.compare-table th {
      background-color: rgba(0, 82, 204, 0.03);
      font-weight: 700;
      color: var(--text-dark);
    }
    table.compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-feature {
      font-weight: 600;
      color: var(--text-dark);
    }
    .compare-highlight {
      background-color: rgba(0, 82, 204, 0.04);
      color: var(--primary-color);
      font-weight: 700;
    }

    /* 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-color: var(--bg-white);
      border: 1px solid rgba(0,0,0,0.06);
      border-radius: var(--border-radius);
      padding: 24px;
      text-align: center;
      transition: var(--transition);
    }
    .training-card:hover {
      border-color: var(--accent-color);
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
    }
    .training-icon {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background-color: rgba(0, 184, 148, 0.1);
      color: var(--accent-color);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      font-size: 1.25rem;
    }
    .training-card h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .training-card p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 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-color: var(--bg-white);
      border-radius: 8px;
      margin-bottom: 12px;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      border: 1px solid rgba(0,0,0,0.02);
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 1rem;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
      transition: var(--transition);
    }
    .faq-question:hover {
      background-color: rgba(0, 82, 204, 0.02);
    }
    .faq-icon-arrow {
      transition: transform 0.3s;
    }
    .faq-item.active .faq-icon-arrow {
      transform: rotate(180deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background-color: #fafbfc;
    }
    .faq-answer-content {
      padding: 20px 24px;
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 19. 行业资讯 / 知识库 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .news-card {
      background-color: var(--bg-white);
      border-radius: var(--border-radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      border: 1px solid rgba(0,0,0,0.02);
    }
    .news-tag {
      font-size: 0.75rem;
      color: var(--accent-color);
      font-weight: 700;
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.5;
    }
    .news-title a:hover {
      color: var(--primary-color);
    }
    .news-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 16px;
    }
    .news-meta {
      font-size: 0.75rem;
      color: var(--text-muted);
      display: flex;
      justify-content: space-between;
      border-top: 1px solid #f1f5f9;
      padding-top: 12px;
    }

    /* 6条用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .review-card {
      background-color: var(--bg-white);
      border-radius: var(--border-radius);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      border: 1px solid rgba(0,0,0,0.02);
    }
    .review-text {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .review-avatar-placeholder {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      border-radius: 50%;
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
    }
    .review-user-info h5 {
      font-size: 0.95rem;
      font-weight: 700;
    }
    .review-user-info p {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 11. 智能需求匹配 & 20. 联系我们 & 21. 加盟代理 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1.2fr 1.8fr;
      gap: 50px;
    }
    .contact-info-panel {
      background: linear-gradient(135deg, var(--primary-color) 0%, #003b99 100%);
      color: #fff;
      padding: 40px;
      border-radius: var(--border-radius);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .contact-header-block h4 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 12px;
      color: var(--secondary-color);
    }
    .contact-details {
      display: flex;
      flex-direction: column;
      gap: 20px;
      margin: 30px 0;
    }
    .contact-detail-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
    }
    .contact-detail-item i {
      font-size: 1.2rem;
      color: var(--secondary-color);
    }
    .kefu-qrcode {
      background-color: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.15);
      border-radius: 8px;
      padding: 16px;
      text-align: center;
    }
    .kefu-qrcode img {
      width: 120px;
      height: 120px;
      margin: 0 auto 10px;
      border-radius: 4px;
    }
    .kefu-qrcode p {
      font-size: 0.8rem;
      color: #fff;
      opacity: 0.9;
    }

    /* 表单组件 */
    .form-card {
      background-color: var(--bg-white);
      border-radius: var(--border-radius);
      padding: 40px;
      box-shadow: var(--shadow-md);
      border: 1px solid rgba(0,0,0,0.02);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-group label {
      display: block;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      border: 2px solid #e2e8f0;
      border-radius: 8px;
      padding: 12px 16px;
      font-size: 0.95rem;
      transition: var(--transition);
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(0, 82, 204, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 120px;
    }
    .btn-submit {
      width: 100%;
      background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
      color: #fff;
      border: none;
      padding: 14px;
      font-size: 1rem;
      font-weight: 700;
      border-radius: 8px;
      cursor: pointer;
      box-shadow: 0 4px 15px rgba(0, 82, 204, 0.2);
      transition: var(--transition);
    }
    .btn-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 82, 204, 0.3);
    }

    /* 友情链接与底部导航区域 */
    .footer-links-grid {
      border-top: 1px solid #e2e8f0;
      padding: 30px 0;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 20px;
    }
    .footer-links-block {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links-block strong {
      font-size: 0.9rem;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .footer-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 15px;
    }
    .footer-links-list a {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .footer-links-list a:hover {
      color: var(--primary-color);
    }

    /* 页脚 */
    footer {
      background-color: #1e272e;
      color: #a4b0be;
      padding: 40px 0 20px;
      font-size: 0.85rem;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.06);
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
    }
    .footer-logo {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-logo img {
      height: 30px;
      width: auto;
      
    }

    /* 浮动客服入口 & 返回顶部 */
    .floating-actions {
      position: fixed;
      right: 24px;
      bottom: 24px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      z-index: 999;
    }
    .floating-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background-color: var(--bg-white);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid rgba(0,0,0,0.05);
      position: relative;
    }
    .floating-btn:hover {
      background-color: var(--primary-color);
      color: #fff;
      transform: translateY(-2px);
    }
    .floating-btn.kefu-btn {
      background-color: var(--accent-color);
      color: #fff;
    }
    .floating-btn.kefu-btn:hover {
      background-color: #009473;
    }
    
    /* 客服二维码悬浮气泡 */
    .kefu-popover {
      position: absolute;
      bottom: 60px;
      right: 0;
      background-color: var(--bg-white);
      box-shadow: var(--shadow-lg);
      border-radius: 8px;
      padding: 16px;
      display: none;
      flex-direction: column;
      align-items: center;
      border: 1px solid rgba(0,0,0,0.1);
      width: 160px;
    }
    .floating-btn.kefu-btn:hover .kefu-popover {
      display: flex;
    }
    .kefu-popover img {
      width: 120px;
      height: 120px;
      margin-bottom: 8px;
    }
    .kefu-popover span {
      font-size: 0.75rem;
      color: var(--text-dark);
      font-weight: 600;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .about-grid, .flow-network-grid, .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
      }
      .showcase-grid {
        grid-template-columns: 1fr;
      }
      .cases-grid, .reviews-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: flex;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--bg-white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-top: 1px solid #e2e8f0;
      }
      .nav-menu.active {
        display: flex;
      }
      .nav-buttons {
        display: none;
      }
      h1.hero-title {
        font-size: 2rem;
      }
      .hero-grid-bg {
        flex-direction: column;
        align-items: center;
      }
      .hero-card-stat {
        width: 100%;
        max-width: 280px;
      }
      .cases-grid, .reviews-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }