:root {
      --primary: #1254ec;
      --primary-hover: #0c43c2;
      --primary-light: #eef4ff;
      --secondary: #00d2ff;
      --accent: #2563eb;
      --dark: #0f172a;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --shadow-sm: 0 2px 4px rgba(18, 84, 236, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(18, 84, 236, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 20px 30px -10px rgba(18, 84, 236, 0.12);
      --radius: 12px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      color: var(--text-main);
      background-color: var(--bg-page);
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

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

    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
      display: block;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-item {
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      border-radius: 6px;
      transition: var(--transition);
      display: inline-block;
    }

    .nav-item:hover, .ai-page-home-link:hover {
      color: var(--primary);
      background: var(--primary-light);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn-solid {
      background: var(--primary);
      color: #ffffff !important;
      padding: 10px 22px;
      border-radius: 8px;
      font-weight: 600;
      font-size: 0.95rem;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--primary);
      box-shadow: 0 4px 14px rgba(18, 84, 236, 0.28);
      cursor: pointer;
      transition: var(--transition);
    }

    .btn-solid:hover {
      background: var(--primary-hover);
      box-shadow: 0 6px 20px rgba(18, 84, 236, 0.35);
      transform: translateY(-1px);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--primary) !important;
      padding: 10px 22px;
      border-radius: 8px;
      font-weight: 600;
      font-size: 0.95rem;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--primary);
      cursor: pointer;
      transition: var(--transition);
    }

    .btn-outline:hover {
      background: var(--primary-light);
      transform: translateY(-1px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 4px;
    }

    /* 模块通用标题 */
    .section-padding {
      padding: 80px 0;
    }

    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: 20px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

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

    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
    }

    /* Hero 首屏 (严格无图片，深蓝渐变几何卡片) */
    .hero-section {
      background: radial-gradient(circle at 10% 20%, rgba(18, 84, 236, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(0, 210, 255, 0.08) 0%, transparent 40%),
                  #ffffff;
      padding: 90px 0 80px;
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }

    .hero-content {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #e8f0fe;
      border: 1px solid rgba(18, 84, 236, 0.2);
      padding: 6px 16px;
      border-radius: 30px;
      color: var(--primary);
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 2.85rem;
      font-weight: 900;
      color: var(--dark);
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 20px;
    }

    .hero-desc {
      font-size: 1.2rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 36px;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }

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

    .btn-hero-primary {
      background: linear-gradient(135deg, var(--primary) 0%, #0045d8 100%);
      color: #ffffff !important;
      padding: 14px 36px;
      font-size: 1.1rem;
      font-weight: 700;
      border-radius: 10px;
      box-shadow: 0 10px 25px rgba(18, 84, 236, 0.35);
      border: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: var(--transition);
    }

    .btn-hero-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 30px rgba(18, 84, 236, 0.45);
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(18, 84, 236, 0.3);
    }

    .stat-num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
      font-family: inherit;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 平台介绍 */
    .about-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-text h3 {
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 16px;
    }

    .about-text p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 1.02rem;
    }

    .about-features {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .feature-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      background: var(--bg-page);
      padding: 12px 16px;
      border-radius: 8px;
    }

    .feature-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--primary);
      margin-top: 6px;
      flex-shrink: 0;
    }

    .feature-item span {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .about-visual {
      background: linear-gradient(135deg, #1254ec 0%, #032b85 100%);
      border-radius: 12px;
      padding: 36px 30px;
      color: #ffffff;
    }

    .about-visual-title {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 14px;
      color: #ffffff;
    }

    .about-visual-list li {
      margin-bottom: 12px;
      font-size: 0.95rem;
      display: flex;
      align-items: center;
      gap: 10px;
      color: rgba(255, 255, 255, 0.9);
    }

    /* 服务能力卡片与场景网格 */
    .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);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(18, 84, 236, 0.35);
    }

    .service-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }

    .service-icon-box {
      width: 44px;
      height: 44px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
    }

    .service-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--dark);
    }

    .service-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
    }

    .service-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .chip {
      background: var(--bg-page);
      border: 1px solid var(--border-color);
      padding: 3px 10px;
      border-radius: 4px;
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 行业模型矩阵标签云 */
    .model-matrix-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 32px;
      margin-top: 40px;
      box-shadow: var(--shadow-sm);
    }

    .model-matrix-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--dark);
      text-align: center;
    }

    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-tag {
      background: #f1f5f9;
      color: #334155;
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 0.88rem;
      font-weight: 600;
      border: 1px solid #e2e8f0;
      transition: var(--transition);
    }

    .model-tag:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
    }

    /* 流程与标准 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px 20px;
      position: relative;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .step-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }

    .step-num {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      font-weight: 800;
      margin: 0 auto 16px;
    }

    .step-name {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--dark);
    }

    .step-detail {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 案例展示区（含图片规范） */
    .case-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      align-items: stretch;
    }

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

    .case-img-box {
      width: 100%;
      background: #eaeff8;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

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

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

    .case-info {
      padding: 24px;
    }

    .case-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
    }

    .case-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    /* 对比评测表格与卡片 */
    .eval-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .eval-score-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 24px;
      margin-bottom: 24px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .eval-badge-block {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .eval-stars {
      color: #f59e0b;
      font-size: 1.6rem;
      letter-spacing: 2px;
    }

    .eval-score-val {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--primary);
    }

    .eval-score-total {
      font-size: 1.1rem;
      color: var(--text-muted);
    }

    .table-container {
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }

    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .custom-table th, .custom-table td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

    .custom-table th {
      background: var(--bg-page);
      color: var(--dark);
      font-weight: 700;
    }

    .highlight-col {
      background: rgba(18, 84, 236, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

    /* Token 比价卡片组 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .token-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 32px 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }

    .token-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-lg);
    }

    .token-featured-tag {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: #ffffff;
      font-size: 0.78rem;
      font-weight: 700;
      padding: 2px 14px;
      border-radius: 20px;
    }

    .token-type {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 12px;
    }

    .token-price {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 6px;
    }

    .token-price-unit {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .token-features {
      text-align: left;
      margin-bottom: 24px;
      padding-top: 16px;
      border-top: 1px solid var(--border-color);
    }

    .token-features li {
      font-size: 0.9rem;
      color: var(--text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 需求匹配与联系我们表单 */
    .form-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: 1fr 1.3fr;
      gap: 40px;
    }

    .form-info h3 {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 16px;
    }

    .form-info p {
      color: var(--text-muted);
      margin-bottom: 28px;
      font-size: 0.98rem;
    }

    .contact-item-group {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

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

    .qr-box {
      margin-top: 20px;
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 16px;
      background: var(--bg-page);
      border-radius: 8px;
      border: 1px solid var(--border-color);
    }

    .qr-box img {
      width: 80px;
      height: 80px;
      display: block;
      border-radius: 4px;
    }

    .form-inner {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--dark);
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: 6px;
      font-size: 0.95rem;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
      background: #ffffff;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(18, 84, 236, 0.12);
    }

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

    /* 用户评论网格 */
    .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);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(18, 84, 236, 0.3);
    }

    .review-comment {
      font-size: 0.95rem;
      color: var(--text-main);
      line-height: 1.6;
      margin-bottom: 20px;
      font-style: normal;
    }

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

    .user-avatar-tag {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }

    .user-meta-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--dark);
    }

    .user-meta-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* FAQ 手风琴 */
    .faq-list {
      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: 8px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: var(--transition);
      user-select: none;
    }

    .faq-question:hover {
      background: var(--bg-page);
      color: var(--primary);
    }

    .faq-icon {
      font-size: 1.2rem;
      font-weight: 400;
      transition: transform 0.28s ease;
      color: var(--primary);
    }

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

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

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

    /* 文章列表与资讯 */
    .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);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .article-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }

    .article-tag-time {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 12px;
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .article-card-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--dark);
      line-height: 1.45;
      margin-bottom: 12px;
    }

    .article-link-action {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 页脚 */
    .site-footer {
      background: #0b1329;
      color: #94a3b8;
      padding-top: 60px;
      padding-bottom: 30px;
      border-top: 1px solid #1e293b;
    }

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

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

    .footer-links-list li {
      margin-bottom: 10px;
    }

    .footer-links-list a {
      color: #94a3b8;
      font-size: 0.9rem;
    }

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

    .friendly-links-wrap {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friendly-links-title {
      font-size: 0.9rem;
      font-weight: 700;
      color: #cbd5e1;
      margin-bottom: 12px;
    }

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

    .friendly-links-list a {
      color: #94a3b8;
      font-size: 0.88rem;
    }

    .friendly-links-list a:hover {
      color: #38bdf8;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动客服 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(18, 84, 236, 0.4);
      cursor: pointer;
      border: none;
      transition: var(--transition);
      position: relative;
    }

    .float-btn:hover {
      transform: scale(1.08);
      background: var(--primary-hover);
    }

    .float-qr-pop {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 12px;
      box-shadow: var(--shadow-lg);
      display: none;
      width: 140px;
      text-align: center;
      color: var(--dark);
      font-size: 0.8rem;
    }

    .float-btn:hover .float-qr-pop {
      display: block;
    }

    .float-qr-pop img {
      width: 100%;
      height: auto;
      display: block;
      margin-bottom: 6px;
    }

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

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 2rem;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-box, .form-wrapper {
        grid-template-columns: 1fr;
      }
      .services-grid, .token-grid, .reviews-grid, .articles-grid, .flow-steps {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }