:root {
      --primary: #4338ca;
      --primary-light: #6366f1;
      --rainbow-1: #ef4444;
      --rainbow-2: #f59e0b;
      --rainbow-3: #10b981;
      --rainbow-4: #06b6d4;
      --rainbow-5: #3b82f6;
      --rainbow-6: #8b5cf6;
      --rainbow-grad: linear-gradient(135deg, #ff4d4d 0%, #f9cb28 25%, #4ade80 50%, #00d2ff 75%, #a855f7 100%);
      --text-main: #1e293b;
      --text-muted: #475569;
      --text-light: #64748b;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
      --shadow-md: 0 10px 25px -5px rgba(0,0,0,0.06), 0 8px 10px -6px rgba(0,0,0,0.04);
      --shadow-lg: 0 20px 30px -10px rgba(99,102,241,0.12);
      --radius: 14px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
    }
    body {
      background: radial-gradient(circle at 10% 0%, rgba(244,63,94,0.04) 0%, transparent 40%),
                  radial-gradient(circle at 90% 20%, rgba(59,130,246,0.05) 0%, transparent 40%),
                  radial-gradient(circle at 50% 80%, rgba(16,185,129,0.04) 0%, transparent 50%),
                  #f8fafc;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }
    .site-container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    /* 顶部彩虹光条 */
    .rainbow-top-bar {
      height: 4px;
      width: 100%;
      background: var(--rainbow-grad);
    }
    /* 头部导航 */
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .logo-container {
      width: 140px;
      height: 42px;
      display: flex;
      align-items: center;
    }
    .ai-page-logo {
      max-width: 100%;
      max-height: 100%;
      object-fit: contain;
      display: block;
    }
    .brand-tag {
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.5px;
      padding: 3px 8px;
      border-radius: 20px;
      background: #eff6ff;
      color: #2563eb;
      border: 1px solid #bfdbfe;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 12px;
      border-radius: 8px;
      display: inline-block;
    }
    .nav-links li a:hover {
      color: var(--primary);
      background-color: #f1f5f9;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-nav-primary {
      padding: 9px 20px;
      background: var(--rainbow-grad);
      color: #ffffff !important;
      font-weight: 600;
      font-size: 14px;
      border-radius: 30px;
      box-shadow: 0 4px 12px rgba(67, 56, 202, 0.25);
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-nav-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(67, 56, 202, 0.35);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 8px 12px;
      border-radius: 8px;
      cursor: pointer;
      font-size: 18px;
    }
    /* 首屏 HERO - 严禁出现任何图片 */
    .hero-section {
      padding: 70px 0 50px;
      position: relative;
      overflow: hidden;
      text-align: center;
    }
    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffffff;
      border: 1px solid #fed7aa;
      box-shadow: 0 2px 10px rgba(245, 158, 11, 0.1);
      border-radius: 30px;
      margin-bottom: 24px;
      font-size: 13px;
      color: #b45309;
      font-weight: 600;
    }
    .rainbow-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--rainbow-grad);
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0%, 100% { transform: scale(1); opacity: 1; }
      50% { transform: scale(1.3); opacity: 0.8; }
    }
    .hero-title {
      font-size: 44px;
      font-weight: 900;
      line-height: 1.25;
      color: #0f172a;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-rainbow-text {
      background: linear-gradient(135deg, #2563eb, #7c3aed, #db2777);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }
    .hero-cta-box {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 44px;
    }
    .btn-hero-main {
      padding: 14px 34px;
      background: var(--rainbow-grad);
      color: #ffffff;
      font-size: 17px;
      font-weight: 700;
      border-radius: 36px;
      box-shadow: 0 8px 24px rgba(219, 39, 119, 0.25);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-hero-main:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(219, 39, 119, 0.35);
      color: #fff;
    }
    .btn-hero-secondary {
      padding: 14px 28px;
      background: #ffffff;
      color: #334155;
      border: 1px solid var(--border-color);
      font-size: 16px;
      font-weight: 600;
      border-radius: 36px;
      box-shadow: var(--shadow-sm);
    }
    .btn-hero-secondary:hover {
      border-color: var(--primary-light);
      color: var(--primary);
      background-color: #f8fafc;
    }
    /* 首屏数据指标卡 */
    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 10px;
    }
    .metric-card {
      background: #ffffff;
      border-radius: var(--radius);
      padding: 24px 16px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: center;
      position: relative;
      overflow: hidden;
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .metric-card::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--rainbow-grad);
    }
    .metric-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .metric-num {
      font-size: 32px;
      font-weight: 900;
      color: #1e1b4b;
      margin-bottom: 4px;
      display: block;
    }
    .metric-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }
    /* 公共区段骨架 */
    section.page-section {
      padding: 64px 0;
      border-bottom: 1px solid rgba(226, 232, 240, 0.7);
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 44px;
    }
    .section-kicker {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 12px;
      border-radius: 16px;
      background: #e0e7ff;
      color: #4338ca;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 12px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
    }
    /* 平台介绍板块 */
    .intro-block {
      background: #ffffff;
      border-radius: 20px;
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: var(--shadow-md);
      position: relative;
    }
    .intro-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 30px;
    }
    .intro-feat-item {
      padding: 20px;
      border-radius: 12px;
      background: #f8fafc;
      border-left: 4px solid var(--primary-light);
    }
    .intro-feat-title {
      font-size: 16px;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 8px;
    }
    .intro-feat-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    /* 宣传图画廊 */
    .banner-gallery-wrap {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-top: 32px;
    }
    .media-card {
      border-radius: 14px;
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: #ffffff;
      box-shadow: var(--shadow-sm);
    }
    .media-card img {
      width: 100%;
      height: 240px;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }
    .media-card:hover img {
      transform: scale(1.03);
    }
    .media-card-caption {
      padding: 12px 16px;
      font-size: 13px;
      font-weight: 600;
      color: #334155;
      background: #ffffff;
    }
    /* 支持的 AI 平台徽章池 */
    .model-tags-container {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }
    .model-tag {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      color: #334155;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
    }
    .model-tag:hover {
      border-color: var(--primary-light);
      color: var(--primary);
      transform: translateY(-2px);
    }
    /* 场景卡片矩阵网格 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .scenario-card {
      background: #ffffff;
      border-radius: 16px;
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .scenario-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }
    .sc-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }
    .sc-icon-box {
      width: 42px;
      height: 42px;
      border-radius: 10px;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
    }
    .sc-title {
      font-size: 17px;
      font-weight: 700;
      color: #0f172a;
    }
    .sc-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .sc-tag {
      display: inline-block;
      font-size: 12px;
      padding: 3px 8px;
      border-radius: 6px;
      background: #f8fafc;
      color: #64748b;
      border: 1px solid #e2e8f0;
    }
    /* 案例中心 */
    .cases-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 20px;
      margin-top: 24px;
    }
    .case-item {
      background: #ffffff;
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .case-item-media {
      width: 100%;
      height: 220px;
      overflow: hidden;
    }
    .case-item-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }
    .case-item-body {
      padding: 20px;
    }
    .case-item-title {
      font-size: 16px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 6px;
    }
    .case-item-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }
    /* 对比评测表格与卡片 */
    .compare-wrapper {
      background: #ffffff;
      border-radius: 20px;
      padding: 36px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }
    .score-summary-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 14px;
      padding: 20px 28px;
      margin-bottom: 28px;
    }
    .score-badge {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .score-circle {
      font-size: 32px;
      font-weight: 900;
      color: #4338ca;
      background: #e0e7ff;
      width: 68px;
      height: 68px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 3px solid #c7d2fe;
    }
    .score-stars {
      color: #f59e0b;
      font-size: 20px;
      letter-spacing: 2px;
    }
    .score-text-title {
      font-size: 18px;
      font-weight: 800;
      color: #0f172a;
    }
    .score-text-desc {
      font-size: 14px;
      color: #64748b;
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 640px;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 14px;
    }
    .compare-table th {
      background: #f8fafc;
      color: #334155;
      font-weight: 700;
    }
    .compare-table tr:hover td {
      background: #fdfdfd;
    }
    .highlight-col {
      background: rgba(99, 102, 241, 0.03);
      font-weight: 600;
      color: #1e1b4b;
    }
    .badge-check {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      color: #15803d;
      font-weight: 600;
    }
    /* 标准流程时间线 */
    .flow-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: #ffffff;
      padding: 24px;
      border-radius: 14px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .step-num {
      font-size: 28px;
      font-weight: 900;
      color: #c7d2fe;
      margin-bottom: 8px;
    }
    .step-name {
      font-size: 16px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 6px;
    }
    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    /* Token 比价与需求匹配表单双栏 */
    .dual-action-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
    .action-panel-card {
      background: #ffffff;
      border-radius: 20px;
      padding: 36px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      flex-direction: column;
    }
    .panel-inner-title {
      font-size: 22px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .panel-inner-desc {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    /* 表单组件 */
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: #334155;
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      font-size: 14px;
      color: #1e293b;
      background: #ffffff;
      outline: none;
      transition: border-color 0.2s;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
    }
    textarea.form-control {
      min-height: 90px;
      resize: vertical;
    }
    .btn-submit-form {
      width: 100%;
      padding: 13px;
      background: var(--rainbow-grad);
      color: #ffffff;
      font-size: 15px;
      font-weight: 700;
      border: none;
      border-radius: 10px;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(67, 56, 202, 0.25);
    }
    .btn-submit-form:hover {
      opacity: 0.95;
      transform: translateY(-1px);
    }
    /* Token 比较列表 */
    .token-price-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .token-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 16px;
      background: #f8fafc;
      border-radius: 10px;
      border: 1px solid #e2e8f0;
    }
    .token-name {
      font-weight: 600;
      font-size: 14px;
      color: #1e293b;
    }
    .token-price-tag {
      font-size: 13px;
      font-weight: 700;
      color: #dc2626;
      background: #fef2f2;
      padding: 4px 10px;
      border-radius: 6px;
      border: 1px solid #fecaca;
    }
    /* 客户评价卡片 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-card {
      background: #ffffff;
      padding: 26px;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-size: 14px;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: normal;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }
    .reviewer-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #e2e8f0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #475569;
      font-size: 14px;
    }
    .reviewer-name {
      font-size: 14px;
      font-weight: 700;
      color: #0f172a;
    }
    .reviewer-role {
      font-size: 12px;
      color: #64748b;
    }
    /* FAQ 折叠面板 */
    .faq-accordion {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 18px 22px;
      font-size: 16px;
      font-weight: 700;
      color: #1e293b;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      transition: background 0.2s;
    }
    .faq-question:hover {
      background: #f8fafc;
    }
    .faq-icon {
      font-size: 20px;
      font-weight: 400;
      color: #94a3b8;
      transition: transform 0.25s ease;
    }
    .faq-answer {
      display: none;
      padding: 0 22px 18px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px solid #f8fafc;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }
    /* 文章与百科资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
    }
    .news-box-card {
      background: #ffffff;
      padding: 28px;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .news-box-title {
      font-size: 18px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 16px;
      border-left: 4px solid var(--primary);
      padding-left: 10px;
    }
    .links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .links-list li a {
      font-size: 14px;
      color: #334155;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 8px 12px;
      border-radius: 8px;
      background: #f8fafc;
      border: 1px solid #f1f5f9;
    }
    .links-list li a:hover {
      color: var(--primary);
      border-color: #cbd5e1;
      background: #f1f5f9;
    }
    /* 加盟代理与被动收入 */
    .agent-banner-card {
      background: linear-gradient(135deg, #eff6ff 0%, #faf5ff 100%);
      border-radius: 20px;
      border: 1px solid #c7d2fe;
      padding: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }
    .agent-content h3 {
      font-size: 24px;
      font-weight: 800;
      color: #1e1b4b;
      margin-bottom: 8px;
    }
    .agent-content p {
      font-size: 15px;
      color: #475569;
      max-width: 680px;
    }
    /* 底部通用板块 */
    footer.site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding-top: 50px;
      padding-bottom: 30px;
      margin-top: auto;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 30px;
      margin-bottom: 36px;
    }
    .footer-col-title {
      font-size: 15px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 16px;
    }
    .footer-links-col {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links-col li a {
      font-size: 13px;
      color: #64748b;
    }
    .footer-links-col li a:hover {
      color: var(--primary);
    }
    .footer-qr-box {
      width: 110px;
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid #e2e8f0;
      padding: 4px;
      background: #ffffff;
    }
    .footer-qr-box img {
      width: 100%;
      height: auto;
      display: block;
    }
    .footer-bottom-bar {
      border-top: 1px solid #f1f5f9;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
      color: #94a3b8;
    }
    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }
    .friend-links-wrap a {
      color: #64748b;
      font-size: 13px;
    }
    .friend-links-wrap a:hover {
      color: var(--primary);
    }
    /* 悬浮客服面板 */
    .float-kefu-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 16px rgba(0,0,0,0.12);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 20px;
      position: relative;
    }
    .float-btn:hover {
      transform: scale(1.05);
    }
    .float-qr-popover {
      display: none;
      position: absolute;
      right: 58px;
      bottom: 0;
      width: 140px;
      background: #ffffff;
      padding: 10px;
      border-radius: 10px;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      text-align: center;
    }
    .float-qr-popover img {
      width: 100%;
      height: auto;
      border-radius: 6px;
      display: block;
    }
    .float-qr-popover span {
      font-size: 11px;
      color: #475569;
      margin-top: 6px;
      display: block;
      font-weight: 600;
    }
    .float-btn.kefu:hover .float-qr-popover {
      display: block;
    }
    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .hero-title { font-size: 34px; }
      .hero-metrics-grid { grid-template-columns: repeat(2, 1fr); }
      .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
      .intro-grid { grid-template-columns: 1fr; }
      .cases-grid { grid-template-columns: 1fr; }
      .flow-steps-grid { grid-template-columns: repeat(2, 1fr); }
      .dual-action-grid { grid-template-columns: 1fr; }
      .reviews-grid { grid-template-columns: 1fr; }
      .news-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
      .nav-links { display: none; }
      .mobile-menu-btn { display: block; }
    }
    @media (max-width: 640px) {
      .hero-title { font-size: 28px; }
      .hero-desc { font-size: 15px; }
      .hero-metrics-grid { grid-template-columns: 1fr; }
      .scenarios-grid { grid-template-columns: 1fr; }
      .flow-steps-grid { grid-template-columns: 1fr; }
      .banner-gallery-wrap { grid-template-columns: 1fr; }
      .score-summary-bar { flex-direction: column; text-align: center; gap: 14px; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom-bar { flex-direction: column; text-align: center; }
    }