:root {
      --primary: #0d9488;
      --primary-hover: #0f766e;
      --primary-dark: #115e59;
      --primary-light: #ccfbf1;
      --primary-bg: #f0fdfa;
      --accent: #06b6d4;
      --accent-soft: #e0f2fe;
      --text-main: #0f172a;
      --text-regular: #334155;
      --text-muted: #64748b;
      --bg-page: #f8fafc;
      --bg-white: #ffffff;
      --border-color: #e2e8f0;
      --border-teal: #99f6e4;
      --shadow-sm: 0 1px 3px rgba(13, 148, 136, 0.08);
      --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
      --shadow-lg: 0 10px 25px -3px rgba(13, 148, 136, 0.12), 0 4px 6px -4px rgba(13, 148, 136, 0.05);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --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", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-regular);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    /* 布局容器 */
    .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: 100;
      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;
    }

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

    .ai-page-logo {
      height: 38px;
      width: auto;
      display: block;
    }

    .brand-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    .brand-tag {
      font-size: 11px;
      background: var(--primary-light);
      color: var(--primary-dark);
      padding: 2px 8px;
      border-radius: 99px;
      font-weight: 600;
    }

    .nav-wrap {
      display: flex;
      align-items: center;
    }

    /* 核心规则：gap必须为0 */
    .nav-links {
      display: flex;
      gap: 0;
      align-items: center;
      list-style: none;
    }

    .nav-links li {
      margin: 0;
      padding: 0;
    }

    .nav-links a {
      display: inline-block;
      padding: 8px 12px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-regular);
      position: relative;
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 18px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      text-align: center;
      line-height: 1.2;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      color: #ffffff;
      box-shadow: 0 2px 6px rgba(13, 148, 136, 0.25);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-hover) 0%, #042f2e 100%);
      transform: translateY(-1px);
      box-shadow: 0 4px 10px rgba(13, 148, 136, 0.35);
      color: #ffffff;
    }

    .btn-outline {
      background: transparent;
      border-color: var(--primary);
      color: var(--primary);
    }

    .btn-outline:hover {
      background: var(--primary-light);
      color: var(--primary-dark);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
      padding: 4px;
    }

    /* 首屏 Hero 区域 - 绝对无任何图片 */
    .hero-section {
      background: linear-gradient(180deg, #e6fffa 0%, #f0fdfa 40%, var(--bg-page) 100%);
      padding: 64px 0 54px;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid #e6f4f2;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid var(--border-teal);
      padding: 6px 14px;
      border-radius: 99px;
      margin-bottom: 18px;
      box-shadow: var(--shadow-sm);
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
      animation: pulse 2s infinite;
    }

    .hero-badge-text {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-dark);
    }

    .hero-title {
      font-size: 34px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .hero-desc {
      font-size: 16px;
      line-height: 1.7;
      color: var(--text-regular);
      margin-bottom: 24px;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 30px;
    }

    .btn-hero-primary {
      padding: 13px 28px;
      font-size: 15px;
      background: linear-gradient(135deg, #0d9488 0%, #0f766e 100%);
      color: #ffffff;
      border-radius: var(--radius-md);
      box-shadow: 0 4px 14px rgba(13, 148, 136, 0.35);
      font-weight: 700;
    }

    .btn-hero-primary:hover {
      background: linear-gradient(135deg, #0f766e 0%, #042f2e 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(13, 148, 136, 0.45);
      color: #ffffff;
    }

    .btn-hero-secondary {
      padding: 13px 24px;
      font-size: 15px;
      background: #ffffff;
      border: 1px solid var(--border-teal);
      color: var(--primary-dark);
      border-radius: var(--radius-md);
      font-weight: 600;
      box-shadow: var(--shadow-sm);
    }

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

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
      padding-top: 18px;
      border-top: 1px solid #d1fae5;
    }

    .stat-item h3 {
      font-size: 22px;
      font-weight: 800;
      color: var(--primary-dark);
      margin-bottom: 2px;
    }

    .stat-item p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 首屏纯 CSS 构造的科技交互仪表板 - 绝无图片 */
    .hero-tech-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid #ccfbf1;
      padding: 24px;
      box-shadow: var(--shadow-lg);
      position: relative;
    }

    .tech-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 12px;
      margin-bottom: 16px;
    }

    .tech-header-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
    }

    .tech-model-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-bottom: 16px;
    }

    .model-pill {
      font-size: 11px;
      padding: 4px 8px;
      background: #f1f5f9;
      color: #334155;
      border-radius: 4px;
      font-family: monospace;
      font-weight: 600;
      border: 1px solid #e2e8f0;
    }

    .model-pill.active {
      background: #ccfbf1;
      color: #0f766e;
      border-color: #5eead4;
    }

    .workflow-preview-box {
      background: #f8fafc;
      border-radius: var(--radius-sm);
      border: 1px dashed #cbd5e1;
      padding: 14px;
      font-size: 12px;
      margin-bottom: 16px;
    }

    .workflow-step {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 8px;
      color: var(--text-regular);
    }

    .workflow-step:last-child {
      margin-bottom: 0;
    }

    .step-badge {
      display: inline-block;
      width: 18px;
      height: 18px;
      line-height: 18px;
      text-align: center;
      background: var(--primary);
      color: #ffffff;
      border-radius: 50%;
      font-size: 10px;
      font-weight: 700;
    }

    .tech-card-bottom {
      background: #f0fdfa;
      border-radius: var(--radius-sm);
      padding: 10px 14px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .tech-rate-info {
      font-size: 12px;
      color: var(--primary-dark);
      font-weight: 600;
    }

    .tech-link {
      font-size: 12px;
      color: var(--primary);
      font-weight: 600;
    }

    /* 通用章节样式 */
    .section-wrap {
      padding: 72px 0;
      border-bottom: 1px solid var(--border-color);
      background-color: var(--bg-white);
    }

    .section-wrap.alt-bg {
      background-color: var(--bg-page);
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 46px;
    }

    .section-subtitle {
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      margin-bottom: 8px;
      display: block;
    }

    .section-title {
      font-size: 28px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.6;
    }

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

    .about-image-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      background: #ffffff;
    }

    .ai-page-image {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }

    .about-feature-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .about-feature-item {
      padding: 14px;
      border-radius: var(--radius-md);
      background: var(--bg-page);
      border: 1px solid var(--border-color);
    }

    .about-feature-item h4 {
      font-size: 14px;
      color: var(--text-main);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .about-feature-item p {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* AIGC 服务卡片 */
    .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: 24px;
      transition: var(--transition);
      position: relative;
    }

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

    .service-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--primary-light);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .service-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 13px;
      color: var(--text-regular);
      line-height: 1.6;
      margin-bottom: 14px;
    }

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

    .service-tag {
      font-size: 11px;
      padding: 3px 8px;
      background: #f1f5f9;
      color: var(--text-muted);
      border-radius: 4px;
    }

    /* 一站式制作 & 行业方案图文展示 */
    .workflow-showcase {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
      margin-bottom: 40px;
    }

    .img-media-container {
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      background: #ffffff;
    }

    .img-media-container img {
      width: 100%;
      height: auto;
      display: block;
    }

    .workflow-details h3 {
      font-size: 22px;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .workflow-details p {
      font-size: 14px;
      color: var(--text-regular);
      line-height: 1.7;
      margin-bottom: 16px;
    }

    /* 标准流程时间线 */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
      position: relative;
    }

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 14px;
      text-align: center;
      position: relative;
      transition: var(--transition);
    }

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

    .step-number {
      width: 32px;
      height: 32px;
      margin: 0 auto 12px;
      background: var(--primary-light);
      color: var(--primary-dark);
      border-radius: 50%;
      font-weight: 700;
      line-height: 32px;
      font-size: 14px;
    }

    .step-card h4 {
      font-size: 14px;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .step-card p {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.4;
    }

    /* 对比评测板块 */
    .rating-banner {
      background: linear-gradient(135deg, #0d9488 0%, #134e4a 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 32px 40px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 30px;
      box-shadow: var(--shadow-lg);
    }

    .rating-left h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .rating-left p {
      font-size: 14px;
      opacity: 0.9;
    }

    .rating-scores {
      display: flex;
      align-items: center;
      gap: 24px;
      text-align: right;
    }

    .score-box .score-val {
      font-size: 44px;
      font-weight: 900;
      line-height: 1;
      color: #5eead4;
    }

    .score-box .score-label {
      font-size: 12px;
      opacity: 0.85;
    }

    .stars-box {
      font-size: 20px;
      color: #facc15;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 13px;
    }

    .eval-table th, 
    .eval-table td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--border-color);
    }

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

    .eval-table tr:hover td {
      background: #f8fafc;
    }

    .eval-table .highlight-col {
      background: #f0fdfa;
      color: var(--primary-dark);
      font-weight: 600;
    }

    .badge-win {
      background: #ccfbf1;
      color: #0f766e;
      padding: 2px 6px;
      border-radius: 4px;
      font-size: 11px;
      font-weight: 700;
    }

    /* Token 比价卡片网格 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .token-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      text-align: center;
      transition: var(--transition);
    }

    .token-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }

    .token-model-name {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .token-official-price {
      font-size: 12px;
      color: var(--text-muted);
      text-decoration: line-through;
      margin-bottom: 4px;
    }

    .token-our-price {
      font-size: 22px;
      font-weight: 800;
      color: var(--primary-dark);
      margin-bottom: 12px;
    }

    .token-discount-pill {
      display: inline-block;
      font-size: 11px;
      background: #dcfce7;
      color: #15803d;
      padding: 2px 8px;
      border-radius: 99px;
      font-weight: 600;
    }

    /* 需求匹配与表单板块 */
    .contact-form-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

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

    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 10px 14px;
      font-size: 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background: #f8fafc;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }

    .form-contact-side {
      background: #f0fdfa;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-teal);
    }

    .contact-qr-box {
      text-align: center;
      margin-bottom: 20px;
      background: #ffffff;
      padding: 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
      box-shadow: var(--shadow-sm);
    }

    .contact-qr-box img {
      width: 130px;
      height: 130px;
      display: block;
      margin: 0 auto;
    }

    .contact-detail-list {
      list-style: none;
      font-size: 13px;
      color: var(--text-regular);
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .contact-detail-list li strong {
      color: var(--text-main);
    }

    /* 客户评论卡片 (6条) */
    .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: 22px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .review-card:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .review-body {
      font-size: 13px;
      color: var(--text-regular);
      line-height: 1.6;
      margin-bottom: 16px;
      position: relative;
    }

    .review-stars {
      color: #f59e0b;
      font-size: 13px;
      margin-bottom: 8px;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 10px;
      border-top: 1px solid #f1f5f9;
      padding-top: 12px;
    }

    .reviewer-avatar-placeholder {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 13px;
    }

    .reviewer-name {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-main);
    }

    .reviewer-title {
      font-size: 11px;
      color: var(--text-muted);
    }

    /* 常见问题 FAQ 折叠面板 (≥10条) */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item.active {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 16px 20px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      user-select: none;
    }

    .faq-icon {
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

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

    .faq-answer {
      display: none;
      padding: 0 20px 16px;
      font-size: 13px;
      color: var(--text-regular);
      line-height: 1.7;
      border-top: 1px solid #f8fafc;
    }

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

    /* 文章与百科模块 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .article-card:hover {
      border-color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }

    .article-badge {
      display: inline-block;
      font-size: 11px;
      background: #f1f5f9;
      color: var(--text-muted);
      padding: 2px 6px;
      border-radius: 4px;
      margin-bottom: 8px;
      align-self: flex-start;
    }

    .article-card h4 {
      font-size: 15px;
      color: var(--text-main);
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .article-link {
      font-size: 13px;
      color: var(--primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 页脚设计 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 48px 0 24px;
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 36px;
    }

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

    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
      font-size: 13px;
      color: var(--text-regular);
    }

    .footer-links-list a:hover {
      color: var(--primary);
    }

    .footer-friendly-links {
      border-top: 1px solid var(--border-color);
      padding: 18px 0;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 14px;
      font-size: 12px;
      color: var(--text-muted);
    }

    .footer-friendly-links a {
      color: var(--text-regular);
    }

    .footer-friendly-links a:hover {
      color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid #f1f5f9;
      padding-top: 20px;
      text-align: center;
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 浮动操作栏 */
    .float-tools {
      position: fixed;
      right: 20px;
      bottom: 24px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 99;
    }

    .float-btn {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
      border: 1px solid var(--border-color);
      cursor: pointer;
      font-size: 14px;
      transition: var(--transition);
      text-decoration: none;
    }

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

    /* 关键帧动画 */
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.9); }
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .about-grid {
        grid-template-columns: 1fr;
      }
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .token-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-form-layout {
        grid-template-columns: 1fr;
      }
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .articles-grid {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-btn {
        display: block;
      }
      .nav-wrap {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        padding: 16px 20px;
      }
      .nav-wrap.open {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
      }
      .nav-links a {
        padding: 10px 0;
        width: 100%;
        border-bottom: 1px solid #f1f5f9;
      }
      .hero-title {
        font-size: 26px;
      }
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .rating-banner {
        flex-direction: column;
        text-align: center;
        gap: 20px;
      }
      .rating-scores {
        text-align: center;
      }
      .reviews-grid {
        grid-template-columns: 1fr;
      }
      .workflow-showcase {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
    }