/* 基础重置 */
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
      background-color: #f8fafc;
      color: #334155;
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
    }

    /* 变量设计：斑斓彩调风 (基于紫色、粉色、蓝色渐变及点缀) */
    :root {
      --primary: #8b5cf6;
      --secondary: #ec4899;
      --accent: #3b82f6;
      --dark: #0f172a;
      --light: #f8fafc;
      --border-color: #e2e8f0;
      --gradient-vibrant: linear-gradient(135deg, #8b5cf6, #ec4899, #3b82f6);
      --gradient-light: linear-gradient(135deg, #e0e7ff, #fae8ff);
      --text-main: #1e293b;
      --text-muted: #64748b;
    }

    /* 统一布局容器 */
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 导航栏 */
    header {
      background-color: rgba(255, 255, 255, 0.95);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1000;
      backdrop-filter: blur(10px);
    }
    .nav-wrapper {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 70px;
    }
    .logo-area {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .logo-area img {
      max-height: 45px;
    }
    .logo-text {
      font-weight: 800;
      font-size: 1.25rem;
      background: var(--gradient-vibrant);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .nav-links {
      display: flex;
      gap: 20px;
      align-items: center;
    }
    .nav-links a {
      font-size: 0.95rem;
      color: var(--text-main);
      font-weight: 500;
      transition: color 0.3s;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 按钮样式 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 24px;
      border-radius: 8px;
      font-weight: 600;
      transition: all 0.3s ease;
      cursor: pointer;
      border: none;
    }
    .btn-gradient {
      background: var(--gradient-vibrant);
      color: #fff;
    }
    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
    }
    .btn-outline {
      background: transparent;
      border: 1.5px solid var(--primary);
      color: var(--primary);
    }
    .btn-outline:hover {
      background: var(--gradient-light);
      transform: translateY(-2px);
    }

    /* 首屏 Hero 区域 (无图片) */
    .hero-section {
      padding: 100px 0 80px;
      background: radial-gradient(circle at 10% 20%, rgba(236, 72, 153, 0.08) 0%, rgba(139, 92, 246, 0.08) 40%, rgba(59, 130, 246, 0.08) 90%);
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .hero-h1 {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 20px;
      line-height: 1.25;
    }
    .hero-h1 span {
      color: var(--primary);
      position: relative;
      display: inline-block;
    }
    .hero-desc {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 800px;
      margin: 0 auto 35px;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 15px;
      margin-bottom: 50px;
    }
    .hero-actions .btn {
      padding: 14px 35px;
      font-size: 1.05rem;
    }

    /* 数据指标卡片 */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    .stat-card {
      background: #ffffff;
      padding: 24px;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
      transition: transform 0.3s;
    }
    .stat-card:hover {
      transform: translateY(-5px);
    }
    .stat-number {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 5px;
    }
    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 通用区块排版 */
    section {
      padding: 80px 0;
    }
    .section-title-wrap {
      text-align: center;
      margin-bottom: 50px;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      font-size: 0.8rem;
      font-weight: 700;
      background: var(--gradient-light);
      color: var(--primary);
      border-radius: 20px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--dark);
    }
    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      margin-top: 8px;
    }

    /* 关于我们 - 平台介绍 */
    .about-section {
      background-color: #fff;
    }
    .about-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .about-content h3 {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 15px;
      color: var(--dark);
    }
    .about-content p {
      margin-bottom: 15px;
      color: var(--text-muted);
    }
    .about-features {
      margin-top: 25px;
    }
    .about-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 15px;
    }
    .about-feature-icon {
      background: var(--gradient-light);
      color: var(--primary);
      width: 24px;
      height: 24px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
      font-size: 0.8rem;
    }

    /* 全平台 AIGC 服务 (支持AI平台) */
    .platforms-box {
      background: #ffffff;
      padding: 40px;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    }
    .platform-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
    }
    .platform-tag {
      padding: 8px 18px;
      border-radius: 30px;
      background-color: #f1f5f9;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-main);
      border: 1px solid transparent;
      transition: all 0.3s;
    }
    .platform-tag:hover {
      background: var(--gradient-light);
      border-color: var(--primary);
      color: var(--primary);
      transform: scale(1.05);
    }

    /* 一站式AIGC制作场景与行业解决方案 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }
    .service-card {
      background: #ffffff;
      border-radius: 16px;
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 6px rgba(0,0,0,0.02);
      transition: all 0.3s;
      position: relative;
      overflow: hidden;
    }
    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--gradient-vibrant);
      opacity: 0;
      transition: opacity 0.3s;
    }
    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 10px 25px rgba(139, 92, 246, 0.1);
    }
    .service-card:hover::before {
      opacity: 1;
    }
    .service-icon {
      font-size: 2rem;
      margin-bottom: 20px;
    }
    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--dark);
    }
    .service-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 全行业解决方案 */
    .solutions-tabs-wrapper {
      background-color: #f1f5f9;
      padding: 40px 20px;
      border-radius: 16px;
    }
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .solution-item {
      background: #fff;
      padding: 25px;
      border-radius: 12px;
      text-align: center;
      border: 1px solid var(--border-color);
    }
    .solution-item h4 {
      font-size: 1.1rem;
      color: var(--dark);
      margin-bottom: 10px;
    }
    .solution-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 全国服务网络 */
    .network-container {
      background: #fff;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      padding: 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .network-map-placeholder {
      background: var(--gradient-light);
      border-radius: 12px;
      height: 300px;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
      border: 1px dashed var(--primary);
    }
    .map-pulse {
      position: absolute;
      width: 12px;
      height: 12px;
      background: var(--secondary);
      border-radius: 50%;
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { transform: scale(1); opacity: 1; }
      100% { transform: scale(3); opacity: 0; }
    }
    .network-nodes {
      display: flex;
      flex-direction: column;
      gap: 15px;
    }
    .network-node-item {
      padding: 15px;
      border-left: 3px solid var(--accent);
      background: #f8fafc;
    }
    .network-node-item h4 {
      font-size: 1rem;
      color: var(--dark);
    }
    .network-node-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 标准化 AIGC 流程 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 15px;
      position: relative;
      margin-top: 30px;
    }
    .process-step {
      background: #ffffff;
      padding: 20px;
      border-radius: 10px;
      border: 1px solid var(--border-color);
      text-align: center;
      position: relative;
    }
    .process-step-num {
      width: 32px;
      height: 32px;
      background: var(--gradient-vibrant);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      margin: 0 auto 12px;
    }
    .process-step h4 {
      font-size: 0.95rem;
      margin-bottom: 6px;
      color: var(--dark);
    }
    .process-step p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 技术标准 */
    .tech-standards {
      background-color: #fff;
    }
    .standards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }
    .standard-card {
      padding: 25px;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      background: #f8fafc;
    }
    .standard-card h4 {
      font-size: 1.15rem;
      color: var(--dark);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .standard-card h4::before {
      content: "✓";
      color: #10b981;
      font-weight: bold;
    }
    .standard-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 客户案例中心 & 图片应用 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }
    .case-card {
      background: #ffffff;
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 10px rgba(0,0,0,0.02);
    }
    .case-img-wrap {
      width: 100%;
      height: 240px;
      overflow: hidden;
      background-color: #f1f5f9;
      position: relative;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s;
    }
    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }
    .case-content {
      padding: 25px;
    }
    .case-tag {
      display: inline-block;
      padding: 3px 10px;
      background: var(--gradient-light);
      color: var(--primary);
      font-size: 0.8rem;
      font-weight: 600;
      border-radius: 4px;
      margin-bottom: 12px;
    }
    .case-content h4 {
      font-size: 1.2rem;
      color: var(--dark);
      margin-bottom: 8px;
    }
    .case-content p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 对比评测 (满分 10 分，推荐星级五星，评分 9.9) */
    .evaluation-section {
      background-color: #ffffff;
    }
    .eval-box {
      background: linear-gradient(135deg, #1e293b, #0f172a);
      color: #ffffff;
      border-radius: 20px;
      padding: 45px;
      box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
    }
    .eval-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid rgba(255,255,255,0.1);
      padding-bottom: 25px;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 20px;
    }
    .eval-score-wrap {
      display: flex;
      align-items: center;
      gap: 15px;
    }
    .eval-score-huge {
      font-size: 4rem;
      font-weight: 900;
      color: #fff;
      line-height: 1;
      background: var(--gradient-vibrant);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .eval-score-label {
      font-size: 1rem;
      color: #94a3b8;
    }
    .eval-stars {
      color: #fbbf24;
      font-size: 1.5rem;
      letter-spacing: 2px;
    }
    .eval-table-wrapper {
      overflow-x: auto;
    }
    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .eval-table th, .eval-table td {
      padding: 15px;
      border-bottom: 1px solid rgba(255,255,255,0.1);
      font-size: 0.95rem;
    }
    .eval-table th {
      color: #94a3b8;
      font-weight: 600;
    }
    .eval-table td strong {
      color: #38bdf8;
    }
    .badge-highlight {
      background: var(--gradient-vibrant);
      color: white;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 0.75rem;
    }

    /* Token 比价参考 & 价格参考 */
    .token-section {
      background-color: #f8fafc;
    }
    .token-table-wrap {
      background: #ffffff;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    }
    .token-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .token-table th, .token-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
    }
    .token-table th {
      background-color: #f1f5f9;
      color: var(--dark);
      font-weight: 700;
    }
    .token-table tr:last-child td {
      border-bottom: none;
    }

    /* 职业技术培训 & 人工智能培训 */
    .training-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 15px;
    }
    .training-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 25px 20px;
      border-radius: 12px;
      text-align: center;
      transition: all 0.3s;
      box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    }
    .training-card:hover {
      border-color: var(--primary);
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(139, 92, 246, 0.1);
    }
    .training-icon {
      width: 50px;
      height: 50px;
      background: var(--gradient-light);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 15px;
      color: var(--primary);
      font-size: 1.25rem;
      font-weight: bold;
    }
    .training-card h4 {
      font-size: 1rem;
      color: var(--dark);
      margin-bottom: 10px;
    }
    .training-card p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 智能需求匹配与联系我们表单 */
    .contact-layout {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
    }
    .form-box {
      background: #ffffff;
      padding: 40px;
      border-radius: 20px;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0,0,0,0.02);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--dark);
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1.5px solid var(--border-color);
      border-radius: 8px;
      outline: none;
      transition: border-color 0.3s;
      font-family: inherit;
    }
    .form-control:focus {
      border-color: var(--primary);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 120px;
    }
    .info-box {
      background: linear-gradient(135deg, #e0e7ff, #fae8ff);
      padding: 40px;
      border-radius: 20px;
      border: 1px solid rgba(139,92,246,0.1);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .info-details {
      margin-top: 20px;
    }
    .info-item {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 15px;
    }
    .info-item-label {
      font-weight: bold;
      color: var(--dark);
    }

    /* 加盟代理 */
    .agent-section {
      background-color: #fff;
    }
    .agent-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }
    .agent-card {
      background: #f8fafc;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 35px;
      text-align: center;
    }
    .agent-card h4 {
      font-size: 1.25rem;
      color: var(--dark);
      margin-bottom: 12px;
    }
    .agent-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    /* 客户评论卡片 (6 条) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 25px;
      box-shadow: 0 4px 6px rgba(0,0,0,0.01);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .review-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--gradient-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: var(--primary);
    }
    .review-meta h5 {
      font-size: 0.9rem;
      color: var(--dark);
      font-weight: 600;
    }
    .review-meta span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* FAQ 折叠面板 (不少于 10 条) */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 15px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      overflow: hidden;
      transition: all 0.3s;
    }
    .faq-header {
      padding: 18px 24px;
      font-weight: 600;
      color: var(--dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #ffffff;
    }
    .faq-header::after {
      content: '+';
      font-size: 1.2rem;
      color: var(--text-muted);
      transition: transform 0.3s;
    }
    .faq-item.active .faq-header::after {
      content: '-';
    }
    .faq-body {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out, padding 0.3s ease-out;
      color: var(--text-muted);
      font-size: 0.9rem;
      background-color: #fafafa;
    }
    .faq-item.active .faq-body {
      padding: 18px 24px;
      max-height: 500px;
    }

    /* 常见问题自助排查 */
    .troubleshoot-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 35px;
    }
    .troubleshoot-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .troubleshoot-item {
      padding: 15px;
      background: #f8fafc;
      border-radius: 8px;
    }
    .troubleshoot-item h5 {
      font-size: 0.95rem;
      margin-bottom: 6px;
      color: var(--dark);
    }
    .troubleshoot-item p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* AI术语百科 & 标签云 */
    .encyclopedia-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .encyclopedia-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 20px;
    }
    .encyclopedia-card h5 {
      font-size: 1rem;
      color: var(--dark);
      margin-bottom: 8px;
      border-left: 3px solid var(--primary);
      padding-left: 8px;
    }
    .encyclopedia-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 资讯与知识库 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }
    .article-card {
      background: #ffffff;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      padding: 25px;
    }
    .article-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 12px;
    }
    .article-link {
      display: inline-block;
      margin-top: 15px;
      font-size: 0.85rem;
      color: var(--primary);
      font-weight: 600;
    }

    /* 页脚与友情链接 */
    footer {
      background-color: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      border-top: 1px solid #1e293b;
    }
    .footer-layout {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-about h4 {
      color: #ffffff;
      margin-bottom: 15px;
    }
    .footer-links h4 {
      color: #ffffff;
      margin-bottom: 15px;
    }
    .footer-links ul {
      list-style: none;
    }
    .footer-links ul li {
      margin-bottom: 10px;
    }
    .footer-links ul li a {
      transition: color 0.3s;
    }
    .footer-links ul li a:hover {
      color: #ffffff;
    }
    .friend-links-box {
      margin-top: 30px;
      padding-top: 20px;
      border-top: 1px solid #1e293b;
    }
    .friend-links-title {
      font-size: 0.9rem;
      color: #64748b;
      margin-bottom: 10px;
    }
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .friend-links a {
      font-size: 0.85rem;
      color: #64748b;
      transition: color 0.3s;
    }
    .friend-links a:hover {
      color: #38bdf8;
    }
    .copyright-area {
      text-align: center;
      padding-top: 20px;
      border-top: 1px solid #1e293b;
      font-size: 0.8rem;
    }

    /* 悬浮客服面板 */
    .float-kefu {
      position: fixed;
      right: 25px;
      bottom: 25px;
      z-index: 999;
    }
    .kefu-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--gradient-vibrant);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 15px rgba(0,0,0,0.15);
      cursor: pointer;
      font-size: 1.25rem;
    }
    .kefu-card {
      position: absolute;
      bottom: 60px;
      right: 0;
      background: #ffffff;
      border-radius: 12px;
      box-shadow: 0 10px 25px rgba(0,0,0,0.15);
      width: 260px;
      border: 1px solid var(--border-color);
      display: none;
      padding: 20px;
    }
    .kefu-card.active {
      display: block;
    }
    .kefu-qr {
      text-align: center;
      margin-bottom: 10px;
    }
    .kefu-qr img {
      width: 150px;
      height: 150px;
    }
    .kefu-info {
      font-size: 0.8rem;
      color: var(--text-muted);
      text-align: center;
      line-height: 1.5;
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(3, 1fr);
      }
      .training-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .about-layout {
        grid-template-columns: 1fr;
      }
      .cases-grid {
        grid-template-columns: 1fr;
      }
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-layout {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .hero-h1 {
        font-size: 2rem;
      }
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        gap: 15px;
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .training-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .reviews-grid {
        grid-template-columns: 1fr;
      }
      .agent-grid {
        grid-template-columns: 1fr;
      }
      .network-container {
        grid-template-columns: 1fr;
      }
      .standards-grid {
        grid-template-columns: 1fr;
      }
      .troubleshoot-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .encyclopedia-grid {
        grid-template-columns: 1fr;
      }
      .articles-grid {
        grid-template-columns: 1fr;
      }
    }