:root {
      --bg-color: #f8fafc;
      --card-bg: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --neon-cyan: #06b6d4;
      --neon-purple: #8b5cf6;
      --neon-pink: #ec4899;
      --neon-blue: #3b82f6;
      --border-color: #e2e8f0;
      --shadow-glow: 0 10px 25px -5px rgba(6, 182, 212, 0.15), 0 8px 10px -6px rgba(139, 92, 246, 0.1);
      --radius: 12px;
    }

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

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

    a {
      color: inherit;
      text-decoration: none;
    }

    /* 统一主容器 */
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    }

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

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

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

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0; /* 严格按照规则要求: gap属性设置为0 */
      list-style: none;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      transition: all 0.25s ease;
      border-radius: 6px;
    }

    .nav-links li a:hover {
      color: var(--neon-cyan);
      background: rgba(6, 182, 212, 0.08);
    }

    .nav-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-weight: 600;
      border-radius: 30px;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
      color: #ffffff !important;
      box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .nav-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 霓虹特效标题修饰 */
    .section-title-wrap {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 16px;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--neon-purple);
      background: rgba(139, 92, 246, 0.1);
      border: 1px solid rgba(139, 92, 246, 0.2);
      border-radius: 20px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    .section-subtitle {
      margin-top: 10px;
      font-size: 16px;
      color: var(--text-muted);
    }

    /* 1. 首页 Hero 区（无图片纯CSS霓虹风） */
    .hero-section {
      padding: 90px 0 70px;
      background: radial-gradient(circle at 50% 20%, rgba(6, 182, 212, 0.12) 0%, rgba(139, 92, 246, 0.08) 35%, rgba(248, 250, 252, 0) 70%);
      position: relative;
      text-align: center;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffffff;
      border: 1px solid rgba(6, 182, 212, 0.3);
      box-shadow: 0 4px 12px rgba(6, 182, 212, 0.1);
      border-radius: 50px;
      font-size: 14px;
      font-weight: 600;
      color: var(--neon-cyan);
      margin-bottom: 24px;
    }

    .hero-badge span {
      width: 8px;
      height: 8px;
      background: var(--neon-cyan);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--neon-cyan);
    }

    .hero-title {
      font-size: 46px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      background: linear-gradient(135deg, #0f172a 30%, #3b82f6 70%, #8b5cf6 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

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

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    .btn-primary {
      padding: 14px 32px;
      font-size: 16px;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
      border-radius: 30px;
      box-shadow: 0 8px 25px rgba(6, 182, 212, 0.3);
      transition: all 0.3s ease;
      display: inline-block;
    }

    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 30px rgba(139, 92, 246, 0.4);
    }

    .btn-secondary {
      padding: 14px 32px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 30px;
      box-shadow: 0 4px 12px rgba(0,0,0,0.05);
      transition: all 0.3s ease;
      display: inline-block;
    }

    .btn-secondary:hover {
      border-color: var(--neon-cyan);
      color: var(--neon-cyan);
      transform: translateY(-3px);
    }

    /* 纯数据指标卡片 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 60px;
    }

    .metric-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      padding: 24px;
      border-radius: var(--radius);
      box-shadow: 0 4px 15px rgba(0,0,0,0.02);
      transition: all 0.3s ease;
      text-align: center;
    }

    .metric-card:hover {
      border-color: var(--neon-cyan);
      box-shadow: var(--shadow-glow);
      transform: translateY(-4px);
    }

    .metric-number {
      font-size: 36px;
      font-weight: 800;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .metric-label {
      font-size: 14px;
      color: var(--text-muted);
      margin-top: 6px;
      font-weight: 500;
    }

    /* 通用 Section 布局 */
    .page-section {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .page-section:nth-child(even) {
      background-color: #ffffff;
    }

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

    .about-text h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }

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

    .models-badge-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 20px;
    }

    .model-chip {
      padding: 6px 12px;
      background: rgba(6, 182, 212, 0.06);
      border: 1px solid rgba(6, 182, 212, 0.2);
      border-radius: 6px;
      font-size: 13px;
      font-weight: 600;
      color: var(--neon-cyan);
    }

    /* 3. AIGC服务 & 一站式制作 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      position: relative;
      overflow: hidden;
      transition: all 0.3s ease;
    }

    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: linear-gradient(to bottom, var(--neon-cyan), var(--neon-purple));
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-glow);
      border-color: rgba(6, 182, 212, 0.4);
    }

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

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(139, 92, 246, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      color: var(--neon-purple);
      margin-bottom: 18px;
    }

    .service-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .service-desc {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 4. 行业方案 & 服务网络 */
    .network-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .network-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
    }

    .network-card h4 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--text-main);
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 16px;
    }

    .tag-item {
      padding: 6px 14px;
      border-radius: 20px;
      background: var(--bg-color);
      border: 1px solid var(--border-color);
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 5. 标准流程 */
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      text-align: center;
      position: relative;
    }

    .step-number {
      width: 40px;
      height: 40px;
      line-height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
      color: #fff;
      font-weight: 800;
      margin: 0 auto 16px;
    }

    .step-card h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }

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

    /* 6. 对比评测（必须包含评测标准） */
    .rating-banner {
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.08), rgba(139, 92, 246, 0.08));
      border: 1px solid rgba(139, 92, 246, 0.2);
      border-radius: var(--radius);
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
    }

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

    .score-big {
      font-size: 42px;
      font-weight: 900;
      color: var(--neon-purple);
    }

    .score-stars {
      color: #f59e0b;
      font-size: 20px;
    }

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

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      background: var(--card-bg);
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }

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

    .compare-table th {
      background: #f1f5f9;
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table tr:last-child td {
      border-bottom: none;
    }

    .highlight-cell {
      background: rgba(6, 182, 212, 0.05);
      font-weight: 700;
      color: var(--neon-cyan);
    }

    /* 7. Token 比价 & 需求匹配 */
    .token-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

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

    /* 8. 案例中心（含图像素材） */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: 0 4px 12px rgba(0,0,0,0.03);
    }

    .case-img-wrap {
      width: 100%;
      height: 200px;
      overflow: hidden;
      background: #e2e8f0;
    }

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

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

    .case-info {
      padding: 20px;
    }

    .case-info h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .case-info p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 9. 客户评论（6条） */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }

    .user-meta h5 {
      font-size: 15px;
      font-weight: 700;
    }

    .user-meta span {
      font-size: 12px;
      color: var(--text-muted);
    }

    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      font-style: italic;
    }

    /* 10. AI百科与行业资讯 */
    .articles-wrapper {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
    }

    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .article-item-link {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 18px;
      background: var(--bg-color);
      border-radius: 8px;
      border: 1px solid var(--border-color);
      transition: all 0.2s ease;
      font-size: 14px;
      font-weight: 500;
    }

    .article-item-link:hover {
      border-color: var(--neon-cyan);
      color: var(--neon-cyan);
    }

    /* 11. FAQ 折叠面板 */
    .faq-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

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

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

    .faq-answer {
      padding: 0 20px 20px;
      font-size: 14px;
      color: var(--text-muted);
      display: none;
      border-top: 1px solid #f1f5f9;
      margin-top: -5px;
      padding-top: 15px;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .faq-toggle-icon {
      font-size: 18px;
      transition: transform 0.3s ease;
      color: var(--neon-cyan);
    }

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

    /* 12. 加盟代理 */
    .agency-banner {
      background: linear-gradient(135deg, #0f172a, #1e1b4b);
      color: #ffffff;
      border-radius: var(--radius);
      padding: 40px;
      text-align: center;
    }

    .agency-banner h3 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 12px;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-pink));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .agency-banner p {
      color: #94a3b8;
      max-width: 700px;
      margin: 0 auto 24px;
    }

    /* 13. 表单与联系我们 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .contact-info-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
    }

    .qr-group {
      display: flex;
      align-items: center;
      gap: 20px;
      margin-top: 20px;
      padding: 16px;
      background: var(--bg-color);
      border-radius: 8px;
    }

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

    .form-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
    }

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

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

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s ease;
    }

    .form-control:focus {
      border-color: var(--neon-cyan);
      box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
    }

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

    .submit-btn {
      width: 100%;
      padding: 14px;
      border: none;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
      color: #ffffff;
      font-weight: 700;
      font-size: 16px;
      cursor: pointer;
      transition: opacity 0.2s ease;
    }

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

    /* 页脚与版权 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
    }

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

    .footer-col h5 {
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 16px;
    }

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

    .footer-links li {
      margin-bottom: 10px;
      font-size: 14px;
    }

    .footer-links a:hover {
      color: var(--neon-cyan);
    }

    .friendship-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 10px;
    }

    .friendship-links a {
      color: #94a3b8;
      font-size: 13px;
      transition: color 0.2s ease;
    }

    .friendship-links a:hover {
      color: var(--neon-cyan);
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
    }

    /* 浮动组件 */
    .floating-widget {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 15px rgba(0,0,0,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 18px;
      color: var(--text-main);
      transition: all 0.2s ease;
    }

    .float-btn:hover {
      color: var(--neon-cyan);
      transform: translateY(-3px);
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .services-grid, .cases-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid, .process-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .hero-title {
        font-size: 32px;
      }
      .nav-links {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .about-content, .network-grid, .services-grid, .cases-grid, .reviews-grid, .token-grid, .contact-wrapper, .faq-grid, .article-links-grid {
        grid-template-columns: 1fr;
      }
      .metrics-grid, .process-steps {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }