:root {
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --rainbow-1: #ef4444;
      --rainbow-2: #f59e0b;
      --rainbow-3: #10b981;
      --rainbow-4: #06b6d4;
      --rainbow-5: #6366f1;
      --rainbow-6: #ec4899;
      --rainbow-gradient: linear-gradient(135deg, #ef4444 0%, #f59e0b 20%, #10b981 40%, #06b6d4 60%, #6366f1 80%, #ec4899 100%);
      --rainbow-soft: linear-gradient(135deg, rgba(239, 68, 68, 0.08), rgba(245, 158, 11, 0.08), rgba(16, 185, 129, 0.08), rgba(6, 182, 212, 0.08), rgba(99, 102, 241, 0.08));
      --bg-page: #fafbfc;
      --bg-card: #ffffff;
      --text-main: #1f2937;
      --text-muted: #4b5563;
      --text-sub: #6b7280;
      --border-color: #e5e7eb;
      --border-light: #f3f4f6;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.08);
      --container-max: 1200px;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --radius-pill: 9999px;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    .section-wrap {
      padding: 70px 0;
      position: relative;
    }

    .section-head {
      text-align: center;
      margin-bottom: 48px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 16px;
      background: var(--rainbow-soft);
      border: 1px solid rgba(99, 102, 241, 0.2);
      border-radius: var(--radius-pill);
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    .rainbow-bar {
      height: 4px;
      width: 60px;
      background: var(--rainbow-gradient);
      margin: 14px auto 0;
      border-radius: var(--radius-pill);
    }

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

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .logo-box img.ai-page-logo {
      height: 38px;
      width: auto;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: #f3f4f6;
    }

    .header-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn-nav-portal {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 0.95rem;
      font-weight: 600;
      color: #ffffff;
      background: var(--rainbow-gradient);
      border-radius: var(--radius-pill);
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    }

    .btn-nav-portal:hover {
      opacity: 0.95;
      transform: translateY(-1px);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .mobile-menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      margin: 5px 0;
      transition: all 0.3s ease;
    }

    /* 首屏 Hero 无图片纯科技感设计 */
    .hero-section {
      padding: 90px 0 70px;
      background: radial-gradient(circle at 50% 20%, rgba(99, 102, 241, 0.08) 0%, rgba(245, 158, 11, 0.05) 40%, rgba(255, 255, 255, 0) 70%), var(--bg-page);
      border-bottom: 1px solid var(--border-light);
      position: relative;
    }

    .hero-container {
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffffff;
      border: 1px solid rgba(99, 102, 241, 0.25);
      border-radius: var(--radius-pill);
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--rainbow-3);
      box-shadow: 0 0 8px var(--rainbow-3);
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      color: #111827;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title .rainbow-text {
      background: var(--rainbow-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.75;
      max-width: 820px;
      margin: 0 auto 36px;
    }

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

    .btn-hero-primary {
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff;
      background: var(--rainbow-gradient);
      border-radius: var(--radius-pill);
      box-shadow: 0 8px 24px rgba(239, 68, 68, 0.25);
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-hero-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(99, 102, 241, 0.35);
      color: #ffffff;
    }

    .btn-hero-secondary {
      padding: 14px 30px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-pill);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .btn-hero-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #f9fafb;
    }

    .hero-features-chips {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 10px;
    }

    .chip-item {
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
      box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
    }

    /* 指标统计面板 */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: -25px;
      position: relative;
      z-index: 10;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-top: 4px solid var(--rainbow-5);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      box-shadow: var(--shadow-md);
      transition: transform 0.3s ease;
    }

    .stat-card:nth-child(1) { border-top-color: var(--rainbow-1); }
    .stat-card:nth-child(2) { border-top-color: var(--rainbow-2); }
    .stat-card:nth-child(3) { border-top-color: var(--rainbow-3); }
    .stat-card:nth-child(4) { border-top-color: var(--rainbow-4); }

    .stat-card:hover {
      transform: translateY(-4px);
    }

    .stat-num {
      font-size: 2.2rem;
      font-weight: 800;
      color: #111827;
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .stat-label {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .stat-detail {
      font-size: 0.8rem;
      color: var(--text-sub);
    }

    /* 平台介绍与多模型聚合 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: stretch;
    }

    .intro-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .intro-card h3 {
      font-size: 1.45rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: #111827;
    }

    .intro-card p {
      font-size: 0.98rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .model-tags-container {
      background: #f9fafb;
      border-radius: var(--radius-sm);
      padding: 18px;
      border: 1px solid var(--border-light);
    }

    .model-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .model-badge {
      padding: 4px 10px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 4px;
      font-size: 0.82rem;
      font-weight: 500;
      color: #334155;
    }

    .feature-point-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .feature-point-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    .check-icon {
      color: var(--rainbow-3);
      font-weight: bold;
      flex-shrink: 0;
      font-size: 1.1rem;
    }

    /* 服务能力卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      border-top: 3px solid transparent;
    }

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

    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: var(--rainbow-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 18px;
      color: var(--primary);
    }

    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: #111827;
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .service-tag-bar {
      margin-top: 16px;
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .service-sub-tag {
      font-size: 0.78rem;
      padding: 2px 8px;
      border-radius: 4px;
      background: #f3f4f6;
      color: #4b5563;
    }

    /* 行业方案展示与图文组合 */
    .industry-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .industry-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .industry-img-box {
      width: 100%;
      height: 240px;
      background-color: #f1f5f9;
      overflow: hidden;
      position: relative;
    }

    .industry-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .industry-card:hover .industry-img-box img {
      transform: scale(1.03);
    }

    .industry-content {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .industry-content h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: #111827;
      margin-bottom: 10px;
    }

    .industry-content p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
    }

    /* 流程步骤 */
    .process-steps-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .process-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .step-badge {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--rainbow-gradient);
      color: #ffffff;
      font-weight: 800;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      box-shadow: 0 4px 10px rgba(99, 102, 241, 0.25);
    }

    .process-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: #111827;
      margin-bottom: 8px;
    }

    .process-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 对比评测表格板块 */
    .evaluation-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .eval-highlight-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      padding-bottom: 24px;
      margin-bottom: 24px;
      border-bottom: 1px solid var(--border-color);
    }

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

    .eval-stars {
      color: #f59e0b;
      font-size: 1.3rem;
      letter-spacing: 2px;
    }

    .eval-score-num {
      font-size: 2.2rem;
      font-weight: 900;
      color: #111827;
      line-height: 1;
    }

    .eval-score-total {
      font-size: 0.95rem;
      color: var(--text-sub);
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

    .eval-table th,
    .eval-table td {
      padding: 16px 18px;
      border-bottom: 1px solid var(--border-color);
    }

    .eval-table th {
      background-color: #f9fafb;
      font-weight: 700;
      color: #111827;
    }

    .eval-table tr.highlight-row {
      background-color: rgba(99, 102, 241, 0.03);
    }

    .eval-tag-good {
      color: #059669;
      font-weight: 600;
    }

    .eval-tag-poor {
      color: #9ca3af;
    }

    /* 服务网络与加盟代理 */
    .network-agent-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    .agent-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .agent-card h3 {
      font-size: 1.35rem;
      font-weight: 700;
      color: #111827;
      margin-bottom: 14px;
    }

    .agent-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
    }

    .agent-perks {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      margin-bottom: 24px;
    }

    .agent-perks li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.92rem;
      color: var(--text-main);
    }

    .agent-perks li::before {
      content: "•";
      color: var(--rainbow-5);
      font-size: 1.3rem;
    }

    /* FAQ 手风琴 */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: border-color 0.2s ease;
    }

    .faq-item.open {
      border-color: var(--primary);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 600;
      color: #111827;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--text-sub);
      transition: transform 0.3s ease;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background-color: #fafbfc;
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.7;
      padding: 0 24px;
    }

    .faq-item.open .faq-answer {
      max-height: 300px;
      padding: 0 24px 20px 24px;
    }

    /* 客户评价 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-stars {
      color: #f59e0b;
      margin-bottom: 12px;
      font-size: 0.95rem;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-light);
      padding-top: 14px;
    }

    .author-avatar-text {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--rainbow-soft);
      border: 1px solid rgba(99, 102, 241, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
      font-size: 0.9rem;
    }

    .author-info h5 {
      font-size: 0.92rem;
      font-weight: 600;
      color: #111827;
    }

    .author-info p {
      font-size: 0.8rem;
      color: var(--text-sub);
    }

    /* 需求匹配与表单板块 */
    .form-section-inner {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 36px;
      align-items: center;
    }

    .form-info h3 {
      font-size: 1.7rem;
      font-weight: 800;
      color: #111827;
      margin-bottom: 16px;
      line-height: 1.35;
    }

    .form-info p {
      font-size: 0.98rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .contact-methods {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .contact-icon-badge {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: #eff6ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
    }

    .form-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: #374151;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 10px 14px;
      font-size: 0.95rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background-color: #fafbfc;
      color: var(--text-main);
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
      background-color: #ffffff;
    }

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    .btn-submit {
      width: 100%;
      padding: 12px 20px;
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      background: var(--rainbow-gradient);
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
      transition: opacity 0.2s ease;
    }

    .btn-submit:hover {
      opacity: 0.95;
    }

    /* 最新文章与行业资讯 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: #111827;
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .article-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .article-link {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

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

    /* 宣传物料图文呼应区 */
    .banner-showcase {
      margin-top: 40px;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      background-color: #ffffff;
    }

    .banner-showcase img.ai-page-image {
      width: 100%;
      height: auto;
      max-height: 380px;
      object-fit: cover;
    }

    /* 友情链接专区 */
    .friends-link-section {
      padding: 30px 0;
      border-top: 1px solid var(--border-color);
      background-color: #f9fafb;
    }

    .friends-head {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .friends-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friends-list a {
      font-size: 0.88rem;
      color: var(--text-muted);
      background: #ffffff;
      padding: 4px 12px;
      border-radius: 4px;
      border: 1px solid var(--border-color);
    }

    .friends-list a:hover {
      color: var(--primary);
      border-color: var(--primary);
    }

    /* 底部通用 Footer */
    .site-footer {
      background-color: #111827;
      color: #9ca3af;
      padding: 50px 0 24px;
      font-size: 0.9rem;
      border-top: 4px solid var(--rainbow-5);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-desc {
      font-size: 0.88rem;
      line-height: 1.7;
      margin-bottom: 16px;
      color: #d1d5db;
    }

    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links-list li a {
      color: #9ca3af;
    }

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

    .footer-qr-wrap {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .footer-qr-img {
      width: 90px;
      height: 90px;
      background: #ffffff;
      padding: 4px;
      border-radius: var(--radius-sm);
    }

    .footer-qr-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .footer-bottom-bar {
      border-top: 1px solid #1f2937;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.85rem;
    }

    .footer-bottom-bar a {
      color: #9ca3af;
    }

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

    /* 悬浮客服挂件 */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      align-items: flex-end;
      gap: 10px;
    }

    .kefu-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: var(--rainbow-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
      cursor: pointer;
      border: none;
      font-size: 1.3rem;
      transition: transform 0.2s ease;
    }

    .kefu-btn:hover {
      transform: scale(1.06);
    }

    .kefu-popover {
      display: none;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 16px;
      box-shadow: var(--shadow-lg);
      width: 190px;
      text-align: center;
    }

    .floating-kefu:hover .kefu-popover {
      display: block;
    }

    .kefu-popover img {
      width: 120px;
      height: 120px;
      margin: 0 auto 8px;
    }

    .kefu-popover p {
      font-size: 0.82rem;
      color: var(--text-muted);
      line-height: 1.4;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .services-grid,
      .reviews-grid,
      .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        width: 100%;
        padding: 12px 14px;
      }
      .hero-title {
        font-size: 2rem;
      }
      .services-grid,
      .reviews-grid,
      .articles-grid,
      .industry-grid,
      .network-agent-grid,
      .intro-grid,
      .form-section-inner,
      .process-steps-wrap,
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .header-action .btn-nav-portal {
        display: none;
      }
    }