:root {
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --secondary: #06b6d4;
      --accent-pink: #ec4899;
      --accent-amber: #f59e0b;
      --accent-emerald: #10b981;
      --accent-purple: #8b5cf6;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-lg: 0 20px 30px -10px rgba(79, 70, 229, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
    }

    body {
      background: radial-gradient(circle at 10% 0%, rgba(79, 70, 229, 0.06) 0%, transparent 40%),
                  radial-gradient(circle at 90% 20%, rgba(6, 182, 212, 0.07) 0%, transparent 40%),
                  radial-gradient(circle at 50% 80%, rgba(236, 72, 153, 0.04) 0%, transparent 50%),
                  var(--bg-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

    /* 斑斓色彩渐变工具 */
    .gradient-text-rainbow {
      background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 35%, #ec4899 70%, #f59e0b 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .gradient-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      border-radius: 9999px;
      font-size: 0.875rem;
      font-weight: 600;
      color: #3730a3;
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.12), rgba(6, 182, 212, 0.12));
      border: 1px solid rgba(79, 70, 229, 0.2);
      margin-bottom: 16px;
    }

    /* 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);
      transition: all 0.3s ease;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
      color: var(--text-main);
    }
    .brand-area .ai-page-logo {
      height: 38px;
      width: auto;
      object-fit: contain;
    }
    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #1e1b4b;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-item a, .ai-page-home-link {
      display: block;
      padding: 8px 12px;
      color: var(--text-muted);
      font-size: 0.925rem;
      font-weight: 500;
      text-decoration: none;
      transition: color 0.2s ease;
      white-space: nowrap;
    }
    .nav-item a:hover, .ai-page-home-link:hover {
      color: var(--primary);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 0.95rem;
      text-decoration: none;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      cursor: pointer;
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
      color: #ffffff;
    }
    .btn-outline {
      background: #ffffff;
      color: #4338ca;
      border-color: #c7d2fe;
    }
    .btn-outline:hover {
      background: #f5f3ff;
      border-color: #818cf8;
      color: #3730a3;
    }
    .btn-coral {
      background: linear-gradient(135deg, #ec4899 0%, #f59e0b 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(236, 72, 153, 0.3);
    }
    .btn-coral:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(236, 72, 153, 0.4);
      color: #ffffff;
    }

    /* 移动端菜单切换 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      padding: 8px;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 通用区块排版 */
    section {
      padding: 70px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 14px;
      color: #0f172a;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Hero 首屏（无图片，纯CSS与斑斓卡片设计） */
    .hero-section {
      padding: 60px 0 80px;
      text-align: center;
      position: relative;
      background: radial-gradient(circle at 50% -20%, rgba(99, 102, 241, 0.15) 0%, rgba(255, 255, 255, 0) 70%);
    }
    .hero-content {
      max-width: 920px;
      margin: 0 auto;
    }
    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      letter-spacing: -1px;
      margin-bottom: 20px;
      color: #0f172a;
    }
    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-muted);
      margin-bottom: 32px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-buttons {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }
    .hero-highlights {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }
    .highlight-card {
      background: #ffffff;
      padding: 20px 16px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      position: relative;
      overflow: hidden;
    }
    .highlight-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, #4f46e5, #06b6d4);
    }
    .highlight-card:nth-child(2)::before {
      background: linear-gradient(90deg, #06b6d4, #10b981);
    }
    .highlight-card:nth-child(3)::before {
      background: linear-gradient(90deg, #f59e0b, #ec4899);
    }
    .highlight-card:nth-child(4)::before {
      background: linear-gradient(90deg, #8b5cf6, #4f46e5);
    }
    .highlight-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .highlight-value {
      font-size: 1.75rem;
      font-weight: 800;
      color: #1e1b4b;
      margin-bottom: 4px;
    }
    .highlight-label {
      font-size: 0.875rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 平台介绍 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .intro-feature-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 24px;
    }
    .intro-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      background: #ffffff;
      padding: 16px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .feature-icon-box {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.15));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      color: var(--primary);
      flex-shrink: 0;
    }
    .intro-visual-card {
      background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      position: relative;
    }
    .model-tags-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 20px;
    }
    .model-chip {
      padding: 6px 12px;
      border-radius: 6px;
      font-size: 0.8rem;
      font-weight: 600;
      background: #ffffff;
      border: 1px solid #cbd5e1;
      color: #334155;
      transition: all 0.2s ease;
    }
    .model-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: scale(1.05);
    }

    /* 服务矩阵网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: #c7d2fe;
    }
    .service-badge {
      align-self: flex-start;
      padding: 4px 10px;
      border-radius: 6px;
      font-size: 0.75rem;
      font-weight: 700;
      margin-bottom: 16px;
      text-transform: uppercase;
    }
    .badge-purple { background: #ede9fe; color: #6d28d9; }
    .badge-blue { background: #e0f2fe; color: #0369a1; }
    .badge-pink { background: #fce7f3; color: #be185d; }
    .badge-amber { background: #fef3c7; color: #b45309; }
    .badge-emerald { background: #d1fae5; color: #047857; }
    .badge-indigo { background: #e0e7ff; color: #4338ca; }

    .service-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 10px;
    }
    .service-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    /* 场景解决方案 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .scenario-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 22px;
      border: 1px solid var(--border-color);
      transition: all 0.25s ease;
    }
    .scenario-item:hover {
      border-color: var(--secondary);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .scenario-header {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
    }
    .scenario-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--accent-pink);
    }
    .scenario-item:nth-child(2n) .scenario-dot { background: var(--secondary); }
    .scenario-item:nth-child(3n) .scenario-dot { background: var(--primary); }
    .scenario-item:nth-child(4n) .scenario-dot { background: var(--accent-amber); }
    .scenario-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #0f172a;
    }
    .scenario-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 流程步骤 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .process-step {
      background: #ffffff;
      padding: 28px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .step-number {
      width: 44px;
      height: 44px;
      margin: 0 auto 16px;
      border-radius: 50%;
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      font-weight: 800;
    }
    .step-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: #1e1b4b;
    }
    .step-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    /* 对比评测专属样式 */
    .rating-banner {
      background: linear-gradient(135deg, #312e81 0%, #1e1b4b 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      box-shadow: var(--shadow-lg);
    }
    .rating-score-box {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .score-num {
      font-size: 3.5rem;
      font-weight: 900;
      color: #fbbf24;
      line-height: 1;
    }
    .stars-icon {
      color: #fbbf24;
      font-size: 1.4rem;
      margin-bottom: 4px;
    }
    .table-container {
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .comparison-table th, .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 0.95rem;
    }
    .comparison-table th {
      background: #f8fafc;
      font-weight: 700;
      color: #1e293b;
    }
    .comparison-table th.highlight-col, .comparison-table td.highlight-col {
      background: rgba(79, 70, 229, 0.04);
      font-weight: 600;
      color: #4338ca;
    }
    .status-check {
      color: var(--accent-emerald);
      font-weight: 700;
    }
    .status-cross {
      color: #94a3b8;
    }

    /* Token比价卡片 */
    .token-pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .pricing-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
    }
    .pricing-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-lg);
    }
    .pricing-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: linear-gradient(135deg, #ec4899, #f59e0b);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 9999px;
    }
    .price-amount {
      font-size: 2.2rem;
      font-weight: 900;
      color: #0f172a;
      margin: 16px 0;
    }
    .price-amount span {
      font-size: 0.9rem;
      font-weight: normal;
      color: var(--text-light);
    }
    .pricing-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 24px;
      font-size: 0.925rem;
      color: var(--text-muted);
    }
    .pricing-list li::before {
      content: "✓";
      color: var(--accent-emerald);
      margin-right: 8px;
      font-weight: bold;
    }

    /* 案例与素材图片展示区 */
    .media-gallery-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      margin-bottom: 30px;
    }
    .gallery-img-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      background: #ffffff;
    }
    .gallery-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }
    .gallery-img-box:hover img {
      transform: scale(1.02);
    }
    .banner-display {
      margin-top: 30px;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }
    .banner-display img {
      width: 100%;
      display: block;
      height: auto;
    }

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 16px;
    }
    .user-avatar-initial {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, #6366f1, #06b6d4);
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .user-meta-name {
      font-weight: 700;
      font-size: 0.95rem;
      color: #0f172a;
    }
    .user-meta-role {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ 折叠面板 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color 0.2s ease;
    }
    .faq-question {
      width: 100%;
      text-align: left;
      padding: 20px 24px;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: #1e293b;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }
    .faq-icon {
      font-size: 1.25rem;
      color: var(--primary);
      transition: transform 0.3s ease;
      flex-shrink: 0;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.6;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding-bottom: 20px;
    }

    /* AI百科与资讯 */
    .knowledge-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .article-link-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-decoration: none;
      color: inherit;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.25s ease;
    }
    .article-link-card:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .article-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
    }
    .article-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 需求表单与联系我们 */
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }
    .contact-info-panel {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin: 20px 0;
    }
    .info-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--text-muted);
    }
    .qr-box {
      margin-top: 16px;
      background: #f8fafc;
      border-radius: var(--radius-md);
      padding: 16px;
      text-align: center;
      border: 1px dashed var(--border-color);
      max-width: 180px;
    }
    .qr-box img {
      max-width: 140px;
      height: auto;
      display: block;
      margin: 0 auto 8px;
      border-radius: 6px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: #334155;
      margin-bottom: 6px;
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: #0f172a;
      background: #f8fafc;
      transition: all 0.2s ease;
      outline: none;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    }
    .form-textarea {
      resize: vertical;
      min-height: 100px;
    }

    /* 加盟代理板块 */
    .partner-card {
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.08) 0%, rgba(6, 182, 212, 0.08) 100%);
      border: 1px solid rgba(79, 70, 229, 0.2);
      border-radius: var(--radius-lg);
      padding: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
    }
    .partner-features {
      display: flex;
      gap: 24px;
      margin-top: 16px;
    }
    .partner-pill {
      background: #ffffff;
      padding: 8px 16px;
      border-radius: 9999px;
      font-size: 0.875rem;
      font-weight: 600;
      color: #3730a3;
      border: 1px solid #c7d2fe;
    }

    /* 友情链接与页脚 */
    .footer-section {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 40px 0 24px;
      color: var(--text-muted);
    }
    .friendly-links-wrap {
      padding-bottom: 24px;
      border-bottom: 1px solid #f1f5f9;
      margin-bottom: 24px;
    }
    .links-title {
      font-size: 0.875rem;
      font-weight: 700;
      color: #334155;
      margin-bottom: 12px;
    }
    .links-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .links-flex a {
      color: var(--text-light);
      text-decoration: none;
      font-size: 0.875rem;
      transition: color 0.2s ease;
    }
    .links-flex a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.85rem;
      color: var(--text-light);
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 悬浮客服挂件与返回顶部 */
    .floating-widget {
      position: fixed;
      right: 24px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      z-index: 999;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      text-decoration: none;
      cursor: pointer;
      transition: all 0.25s ease;
      font-size: 1.2rem;
    }
    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.1);
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .services-grid, .knowledge-grid, .reviews-grid, .token-pricing-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenarios-grid, .hero-highlights, .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .media-gallery-grid {
        grid-template-columns: 1fr;
      }
      .contact-layout {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-item a, .ai-page-home-link {
        width: 100%;
        padding: 12px;
      }
      .header-actions {
        display: none;
      }
      .hero-h1 {
        font-size: 2rem;
      }
      .services-grid, .scenarios-grid, .knowledge-grid, .reviews-grid, .hero-highlights, .process-timeline, .token-pricing-grid {
        grid-template-columns: 1fr;
      }
      .partner-card {
        flex-direction: column;
        text-align: center;
      }
      .rating-banner {
        flex-direction: column;
        text-align: center;
        gap: 16px;
      }
      .rating-score-box {
        flex-direction: column;
      }
    }