* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    :root {
      --rainbow-1: #f97316;
      --rainbow-2: #ef4444;
      --rainbow-3: #8b5cf6;
      --rainbow-4: #06b6d4;
      --rainbow-5: #10b981;
      --rainbow-6: #f59e0b;
      --bg-soft: #fdf8f3;
      --bg-white: #ffffff;
      --text-dark: #1e1b18;
      --text-body: #3d3632;
      --text-muted: #6b625c;
      --border-light: #f0e6de;
      --radius-lg: 24px;
      --radius-md: 16px;
      --radius-sm: 10px;
      --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.04);
      --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.08);
      --container-width: 1200px;
      --container-padding: 24px;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
      background: var(--bg-soft);
      color: var(--text-body);
      line-height: 1.6;
      font-size: 16px;
      overflow-x: hidden;
    }
    .container {
      max-width: var(--container-width);
      margin: 0 auto;
      padding-left: var(--container-padding);
      padding-right: var(--container-padding);
      width: 100%;
    }
    /* 顶部导航 */
    .site-header {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-top: 12px;
      padding-bottom: 12px;
      gap: 16px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
      text-decoration: none;
      color: var(--text-dark);
      font-weight: 700;
      font-size: 1.2rem;
    }
    .brand img {
      max-width: 100%;
      height: auto;
      max-height: 38px;
      width: auto;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
      flex-wrap: wrap;
    }
    .nav-links li {
      position: relative;
    }
    .nav-links a {
      display: block;
      padding: 8px 12px;
      color: var(--text-body);
      text-decoration: none;
      font-size: 0.9rem;
      font-weight: 500;
      border-radius: 6px;
      transition: color 0.2s, background 0.2s;
      white-space: nowrap;
    }
    .nav-links a:hover {
      color: var(--rainbow-1);
      background: rgba(249, 115, 22, 0.06);
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      padding: 10px 22px;
      border-radius: 50px;
      font-size: 0.9rem;
      font-weight: 600;
      text-decoration: none;
      border: none;
      cursor: pointer;
      transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
      line-height: 1.4;
      white-space: nowrap;
    }
    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--rainbow-1), var(--rainbow-2));
      color: #ffffff;
    }
    .btn-outline {
      background: transparent;
      border: 1.5px solid var(--border-light);
      color: var(--text-dark);
    }
    .btn-outline:hover {
      border-color: var(--rainbow-1);
      color: var(--rainbow-1);
    }
    .btn-rainbow {
      background: linear-gradient(135deg, var(--rainbow-3), var(--rainbow-4));
      color: #ffffff;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      flex-direction: column;
      gap: 5px;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-dark);
      border-radius: 2px;
      transition: 0.2s;
    }
    /* 首屏 - 无图片 */
    .hero {
      padding: 60px 0 80px;
      background: radial-gradient(circle at 10% 30%, rgba(249, 115, 22, 0.08), transparent 50%),
                  radial-gradient(circle at 90% 70%, rgba(139, 92, 246, 0.08), transparent 50%),
                  radial-gradient(circle at 50% 30%, rgba(6, 182, 212, 0.06), transparent 60%);
      position: relative;
      overflow: hidden;
    }
    .hero::before {
      content: '';
      position: absolute;
      top: -120px;
      right: -80px;
      width: 400px;
      height: 400px;
      background: linear-gradient(135deg, rgba(249, 115, 22, 0.12), rgba(139, 92, 246, 0.08));
      border-radius: 50%;
      filter: blur(60px);
      pointer-events: none;
    }
    .hero::after {
      content: '';
      position: absolute;
      bottom: -100px;
      left: -60px;
      width: 360px;
      height: 360px;
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(16, 185, 129, 0.06));
      border-radius: 50%;
      filter: blur(60px);
      pointer-events: none;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 820px;
      margin: 0 auto;
      text-align: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(249, 115, 22, 0.1);
      color: var(--rainbow-1);
      padding: 6px 18px;
      border-radius: 50px;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 20px;
      animation: fadeInUp 0.6s ease-out;
    }
    .hero h1 {
      font-size: clamp(2rem, 5vw, 3.4rem);
      font-weight: 800;
      line-height: 1.2;
      color: var(--text-dark);
      margin-bottom: 20px;
      letter-spacing: -0.02em;
      animation: fadeInUp 0.6s ease-out 0.1s both;
    }
    .hero h1 .rainbow-text {
      background: linear-gradient(135deg, var(--rainbow-1), var(--rainbow-3), var(--rainbow-4));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .hero-desc {
      font-size: 1.1rem;
      color: var(--text-muted);
      max-width: 640px;
      margin: 0 auto 28px;
      animation: fadeInUp 0.6s ease-out 0.2s both;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      justify-content: center;
      margin-bottom: 44px;
      animation: fadeInUp 0.6s ease-out 0.3s both;
    }
    .hero-metrics {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px 48px;
      animation: fadeInUp 0.6s ease-out 0.4s both;
    }
    .hero-metric {
      text-align: center;
    }
    .hero-metric strong {
      display: block;
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--text-dark);
    }
    .hero-metric span {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    /* 数据指标卡片 */
    .metrics-section {
      padding: 20px 0 60px;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
      gap: 20px;
    }
    .metric-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-light);
      transition: transform 0.25s, box-shadow 0.25s;
      animation: fadeInUp 0.5s ease-out both;
    }
    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .metric-card .icon-emoji {
      font-size: 1.8rem;
      display: block;
      margin-bottom: 8px;
    }
    .metric-card h3 {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 4px;
    }
    .metric-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    /* 通用区块 */
    .section {
      padding: 70px 0;
    }
    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 48px;
    }
    .section-tag {
      display: inline-block;
      background: rgba(249, 115, 22, 0.08);
      color: var(--rainbow-1);
      padding: 4px 16px;
      border-radius: 50px;
      font-size: 0.8rem;
      font-weight: 600;
      margin-bottom: 14px;
      letter-spacing: 0.02em;
    }
    .section-title {
      font-size: clamp(1.6rem, 3.5vw, 2.2rem);
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 14px;
      line-height: 1.3;
    }
    .section-sub {
      font-size: 1rem;
      color: var(--text-muted);
      max-width: 600px;
      margin: 0 auto;
    }
    /* 关于我们 / 平台介绍 */
    .about-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 48px;
      align-items: start;
    }
    .about-text h2 {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 16px;
    }
    .about-text p {
      margin-bottom: 16px;
      color: var(--text-body);
      font-size: 1rem;
    }
    .about-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }
    .about-feature {
      background: var(--bg-white);
      border-radius: var(--radius-sm);
      padding: 18px 16px;
      border: 1px solid var(--border-light);
      transition: border-color 0.2s, transform 0.2s;
    }
    .about-feature:hover {
      border-color: var(--rainbow-1);
      transform: translateY(-2px);
    }
    .about-feature h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 4px;
    }
    .about-feature p {
      font-size: 0.82rem;
      color: var(--text-muted);
      margin-bottom: 0;
    }
    .about-visual {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-light);
    }
    .about-visual h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 20px;
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .tag-cloud span {
      display: inline-block;
      background: var(--bg-soft);
      border: 1px solid var(--border-light);
      padding: 6px 14px;
      border-radius: 50px;
      font-size: 0.82rem;
      color: var(--text-body);
      transition: background 0.2s, border-color 0.2s, transform 0.2s;
    }
    .tag-cloud span:hover {
      background: #fff;
      border-color: var(--rainbow-1);
      transform: translateY(-1px);
    }
    /* 服务能力卡片 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 24px;
    }
    .service-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(249, 115, 22, 0.3);
    }
    .service-icon {
      font-size: 2rem;
      margin-bottom: 14px;
      display: block;
    }
    .service-card h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .service-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      flex: 1;
    }
    /* 流程步骤 */
    .steps-row {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 20px;
      counter-reset: step;
    }
    .step-item {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      border: 1px solid var(--border-light);
      position: relative;
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .step-item:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }
    .step-num {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--rainbow-1), var(--rainbow-2));
      color: #fff;
      font-weight: 700;
      font-size: 1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 14px;
    }
    .step-item h3 {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .step-item p {
      font-size: 0.82rem;
      color: var(--text-muted);
    }
    /* 案例展示 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 24px;
    }
    .case-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: var(--bg-soft);
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .case-img-wrap img {
      max-width: 100%;
      height: auto;
      object-fit: contain;
      display: block;
    }
    .case-card-body {
      padding: 18px 16px;
    }
    .case-card-body h3 {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .case-card-body p {
      font-size: 0.82rem;
      color: var(--text-muted);
    }
    /* 对比评测表格 */
    .compare-wrap {
      overflow-x: auto;
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 720px;
      font-size: 0.9rem;
    }
    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 1px solid var(--border-light);
    }
    .compare-table th {
      background: var(--bg-soft);
      font-weight: 700;
      color: var(--text-dark);
      white-space: nowrap;
    }
    .compare-table td:first-child {
      font-weight: 600;
      color: var(--text-dark);
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-table .highlight {
      background: rgba(249, 115, 22, 0.04);
    }
    .compare-rating {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 24px;
      justify-content: center;
      margin-top: 32px;
      background: var(--bg-white);
      padding: 28px 32px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
    }
    .rating-score {
      display: flex;
      align-items: baseline;
      gap: 4px;
    }
    .rating-score strong {
      font-size: 2.6rem;
      font-weight: 800;
      color: var(--rainbow-1);
      line-height: 1;
    }
    .rating-score span {
      font-size: 1rem;
      color: var(--text-muted);
    }
    .rating-stars {
      font-size: 1.2rem;
      color: #f59e0b;
      letter-spacing: 2px;
    }
    .rating-recommend {
      font-size: 0.95rem;
      color: var(--text-body);
    }
    /* 用户评论 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
    }
    .review-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 24px 22px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: transform 0.25s, box-shadow 0.25s;
      display: flex;
      flex-direction: column;
    }
    .review-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }
    .review-stars {
      color: #f59e0b;
      font-size: 0.95rem;
      letter-spacing: 2px;
      margin-bottom: 12px;
    }
    .review-text {
      font-size: 0.9rem;
      color: var(--text-body);
      flex: 1;
      margin-bottom: 16px;
      line-height: 1.7;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .review-avatar {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--rainbow-1), var(--rainbow-3));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.85rem;
      flex-shrink: 0;
    }
    .review-user-info strong {
      display: block;
      font-size: 0.85rem;
      color: var(--text-dark);
    }
    .review-user-info span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }
    /* 文章列表 */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 20px;
    }
    .article-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 22px 20px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
      display: flex;
      flex-direction: column;
      text-decoration: none;
      color: inherit;
    }
    .article-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(249, 115, 22, 0.3);
    }
    .article-date {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .article-card h3 {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-dark);
      line-height: 1.4;
      flex: 1;
    }
    .article-more {
      margin-top: 16px;
      font-size: 0.82rem;
      color: var(--rainbow-1);
      font-weight: 600;
    }
    /* FAQ */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: var(--bg-white);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-light);
      overflow: hidden;
      transition: border-color 0.2s;
    }
    .faq-item.active {
      border-color: rgba(249, 115, 22, 0.4);
    }
    .faq-question {
      width: 100%;
      background: none;
      border: none;
      padding: 18px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-dark);
      text-align: left;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      font-family: inherit;
      transition: background 0.2s;
    }
    .faq-question:hover {
      background: rgba(249, 115, 22, 0.03);
    }
    .faq-question::after {
      content: '+';
      font-size: 1.3rem;
      font-weight: 400;
      color: var(--rainbow-1);
      transition: transform 0.3s;
      line-height: 1;
      flex-shrink: 0;
    }
    .faq-item.active .faq-question::after {
      content: '−';
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 22px;
    }
    .faq-item.active .faq-answer {
      max-height: 400px;
      padding: 0 22px 18px;
    }
    .faq-answer p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    /* 表单 */
    .form-wrap {
      max-width: 720px;
      margin: 0 auto;
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 40px 36px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      margin-bottom: 18px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full {
      grid-column: 1 / -1;
    }
    .form-group label {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-dark);
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      font-family: inherit;
      background: var(--bg-soft);
      color: var(--text-dark);
      transition: border-color 0.2s, box-shadow 0.2s;
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      outline: none;
      border-color: var(--rainbow-1);
      box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
      background: #fff;
    }
    .form-group textarea {
      resize: vertical;
      min-height: 100px;
    }
    .form-submit {
      width: 100%;
      padding: 14px;
      font-size: 1rem;
      margin-top: 8px;
    }
    /* 联系我们 / 客服信息 */
    .contact-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
      margin-top: 40px;
    }
    .contact-item {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      border: 1px solid var(--border-light);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .contact-item:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }
    .contact-item .contact-icon {
      font-size: 1.6rem;
      margin-bottom: 8px;
      display: block;
    }
    .contact-item h4 {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 4px;
    }
    .contact-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
      word-break: break-all;
    }
    .contact-item img {
      max-width: 120px;
      height: auto;
      margin: 8px auto 0;
      display: block;
      border-radius: 8px;
    }
    /* 友情链接 */
    .friend-links {
      padding: 32px 0;
      border-top: 1px solid var(--border-light);
    }
    .friend-links-inner {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px 18px;
      justify-content: center;
    }
    .friend-links-label {
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--text-muted);
    }
    .friend-links a {
      font-size: 0.82rem;
      color: var(--text-muted);
      text-decoration: none;
      transition: color 0.2s;
    }
    .friend-links a:hover {
      color: var(--rainbow-1);
    }
    /* 页脚 */
    .site-footer {
      background: #1e1b18;
      color: #d6cfc8;
      padding: 48px 0 0;
      margin-top: 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 32px;
      padding-bottom: 36px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-brand p {
      font-size: 0.85rem;
      color: #a89f97;
      margin-top: 12px;
      line-height: 1.7;
      max-width: 300px;
    }
    .footer-brand .brand {
      color: #fff;
    }
    .footer-col h4 {
      font-size: 0.9rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col a {
      color: #a89f97;
      text-decoration: none;
      font-size: 0.85rem;
      transition: color 0.2s;
    }
    .footer-col a:hover {
      color: var(--rainbow-1);
    }
    .footer-bottom {
      padding: 20px 0;
      text-align: center;
      font-size: 0.82rem;
      color: #8a8078;
    }
    /* 浮动客服 */
    .float-service {
      position: fixed;
      right: 20px;
      bottom: 100px;
      z-index: 900;
      display: flex;
      flex-direction: column;
      gap: 10px;
      align-items: center;
    }
    .float-service button {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      border: none;
      background: linear-gradient(135deg, var(--rainbow-1), var(--rainbow-3));
      color: #fff;
      font-size: 1.2rem;
      cursor: pointer;
      box-shadow: 0 6px 20px rgba(249, 115, 22, 0.35);
      transition: transform 0.2s, box-shadow 0.2s;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .float-service button:hover {
      transform: scale(1.08);
      box-shadow: 0 8px 28px rgba(249, 115, 22, 0.45);
    }
    .back-top {
      position: fixed;
      right: 20px;
      bottom: 40px;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: 1px solid var(--border-light);
      background: var(--bg-white);
      color: var(--text-dark);
      font-size: 1.1rem;
      cursor: pointer;
      box-shadow: var(--shadow-card);
      transition: opacity 0.3s, transform 0.2s;
      opacity: 0;
      pointer-events: none;
      z-index: 900;
    }
    .back-top.show {
      opacity: 1;
      pointer-events: auto;
    }
    .back-top:hover {
      transform: translateY(-3px);
    }
    /* 客服弹窗 */
    .service-modal {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.4);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 1200;
      padding: 20px;
    }
    .service-modal.open {
      display: flex;
    }
    .service-modal-box {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 28px 24px;
      max-width: 340px;
      width: 100%;
      text-align: center;
      position: relative;
    }
    .service-modal-box h3 {
      font-size: 1rem;
      color: var(--text-dark);
      margin-bottom: 16px;
    }
    .service-modal-box img {
      max-width: 180px;
      height: auto;
      margin: 0 auto 12px;
      display: block;
      border-radius: 8px;
    }
    .service-modal-box p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .modal-close {
      position: absolute;
      top: 10px;
      right: 14px;
      background: none;
      border: none;
      font-size: 1.4rem;
      cursor: pointer;
      color: var(--text-muted);
      line-height: 1;
    }
    /* 动画 */
    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(24px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }
    /* 响应式 */
    @media (max-width: 1024px) {
      .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 820px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 12px 20px 20px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: 0 16px 30px rgba(0, 0, 0, 0.06);
        gap: 4px;
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links a {
        padding: 10px 12px;
        font-size: 0.95rem;
      }
      .menu-toggle {
        display: flex;
      }
      .header-inner {
        position: relative;
      }
      .nav-cta .btn-outline {
        display: none;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .compare-rating {
        padding: 22px 18px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
      }
    }
    @media (max-width: 560px) {
      .hero {
        padding: 40px 0 56px;
      }
      .hero-metrics {
        gap: 16px 32px;
      }
      .section {
        padding: 50px 0;
      }
      .form-wrap {
        padding: 28px 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .about-features {
        grid-template-columns: 1fr;
      }
      .compare-table th,
      .compare-table td {
        padding: 12px 14px;
        font-size: 0.82rem;
      }
      .float-service {
        right: 14px;
        bottom: 80px;
      }
      .back-top {
        right: 14px;
        bottom: 24px;
      }
    }