* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
      background: #f0f5fe;
      color: #1a2a4a;
      line-height: 1.6;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 通用按钮 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 30px;
      border-radius: 40px;
      font-weight: 700;
      font-size: 1rem;
      text-decoration: none;
      transition: all 0.25s ease;
      cursor: pointer;
      border: none;
      gap: 8px;
      letter-spacing: 0.3px;
    }
    .btn-primary {
      background: #1a4bff;
      color: #fff;
      box-shadow: 0 8px 20px rgba(26, 75, 255, 0.3);
    }
    .btn-primary:hover {
      background: #0a3ad0;
      transform: translateY(-2px);
      box-shadow: 0 12px 26px rgba(26, 75, 255, 0.4);
    }
    .btn-outline {
      background: transparent;
      color: #1a4bff;
      border: 2px solid #1a4bff;
    }
    .btn-outline:hover {
      background: #e8edff;
      transform: translateY(-2px);
    }
    .btn-light {
      background: #fff;
      color: #1a4bff;
      box-shadow: 0 6px 16px rgba(0,0,0,0.08);
    }
    .btn-light:hover {
      background: #f0f5ff;
      transform: translateY(-2px);
    }
    /* 导航 */
    .site-header {
      background: #ffffff;
      box-shadow: 0 4px 20px rgba(0, 30, 80, 0.06);
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 72px;
      flex-wrap: wrap;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      color: #1a2a4a;
      font-weight: 700;
      font-size: 1.3rem;
    }
    .brand img {
      max-height: 40px;
      width: auto;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
      flex-wrap: wrap;
    }
    .nav-links a {
      padding: 8px 14px;
      text-decoration: none;
      color: #2e3e5e;
      font-weight: 500;
      font-size: 0.95rem;
      border-radius: 30px;
      transition: background 0.2s, color 0.2s;
      white-space: nowrap;
    }
    .nav-links a:hover {
      background: #e8edff;
      color: #1a4bff;
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .nav-cta .btn {
      padding: 8px 20px;
      font-size: 0.9rem;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.8rem;
      color: #1a2a4a;
      cursor: pointer;
      padding: 4px 10px;
    }
    /* Hero */
    .hero {
      background: linear-gradient(135deg, #0a2a6e 0%, #1a4bff 70%, #3a6aff 100%);
      padding: 80px 0 90px;
      position: relative;
      overflow: hidden;
      color: #fff;
    }
    .hero::before {
      content: '';
      position: absolute;
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
      top: -200px;
      right: -100px;
      border-radius: 50%;
    }
    .hero::after {
      content: '';
      position: absolute;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
      bottom: -150px;
      left: -100px;
      border-radius: 50%;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 800px;
    }
    .hero-badge {
      display: inline-block;
      background: rgba(255,255,255,0.15);
      backdrop-filter: blur(4px);
      padding: 6px 18px;
      border-radius: 40px;
      font-size: 0.85rem;
      letter-spacing: 1px;
      margin-bottom: 24px;
      border: 1px solid rgba(255,255,255,0.25);
    }
    .hero h1 {
      font-size: 2.9rem;
      line-height: 1.2;
      margin-bottom: 20px;
      font-weight: 800;
      letter-spacing: -0.5px;
    }
    .hero h1 span {
      color: #ffd966;
    }
    .hero p {
      font-size: 1.15rem;
      opacity: 0.92;
      margin-bottom: 32px;
      max-width: 640px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }
    .hero-stats {
      display: flex;
      gap: 40px;
      margin-top: 50px;
      flex-wrap: wrap;
    }
    .hero-stat-item {
      display: flex;
      flex-direction: column;
    }
    .hero-stat-num {
      font-size: 1.8rem;
      font-weight: 800;
      color: #ffd966;
    }
    .hero-stat-label {
      font-size: 0.9rem;
      opacity: 0.8;
    }
    /* 通用节标题 */
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: #0a1e3c;
      margin-bottom: 12px;
      letter-spacing: -0.3px;
      line-height: 1.3;
    }
    .section-sub {
      color: #4e5e7e;
      font-size: 1.05rem;
      max-width: 700px;
      margin-bottom: 40px;
    }
    .section-tag {
      display: inline-block;
      background: #e8edff;
      color: #1a4bff;
      font-weight: 600;
      font-size: 0.8rem;
      padding: 4px 14px;
      border-radius: 30px;
      letter-spacing: 0.5px;
      margin-bottom: 16px;
    }
    /* 服务卡片网格 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 24px;
    }
    .service-card {
      background: #fff;
      border-radius: 20px;
      padding: 28px 24px;
      box-shadow: 0 6px 18px rgba(0, 20, 60, 0.05);
      transition: all 0.3s ease;
      border: 1px solid rgba(26, 75, 255, 0.08);
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 18px 36px rgba(26, 75, 255, 0.12);
      border-color: rgba(26, 75, 255, 0.2);
    }
    .service-card h3 {
      font-size: 1.15rem;
      margin-bottom: 8px;
      color: #0a1e3c;
    }
    .service-card p {
      font-size: 0.9rem;
      color: #4e5e7e;
      line-height: 1.5;
    }
    .service-icon {
      font-size: 1.8rem;
      margin-bottom: 14px;
      display: block;
    }
    /* 数据指标卡片 */
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }
    .metric-card {
      background: #fff;
      border-radius: 18px;
      padding: 24px 20px;
      text-align: center;
      box-shadow: 0 6px 18px rgba(0,20,60,0.05);
      border: 1px solid #e0e8f5;
      transition: 0.25s;
    }
    .metric-card:hover {
      border-color: #1a4bff;
      box-shadow: 0 12px 24px rgba(26,75,255,0.1);
    }
    .metric-num {
      font-size: 2rem;
      font-weight: 800;
      color: #1a4bff;
    }
    .metric-label {
      font-size: 0.9rem;
      color: #4e5e7e;
      margin-top: 4px;
    }
    /* 流程步骤 */
    .steps {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      counter-reset: step;
    }
    .step-item {
      flex: 1 1 180px;
      background: #fff;
      border-radius: 18px;
      padding: 26px 20px;
      box-shadow: 0 6px 16px rgba(0,20,60,0.04);
      border-left: 5px solid #1a4bff;
      transition: 0.2s;
    }
    .step-item:hover {
      transform: translateY(-4px);
      box-shadow: 0 14px 28px rgba(26,75,255,0.1);
    }
    .step-num {
      font-size: 1.8rem;
      font-weight: 800;
      color: #1a4bff;
      opacity: 0.3;
      margin-bottom: 6px;
    }
    .step-item h4 {
      font-size: 1.05rem;
      margin-bottom: 6px;
      color: #0a1e3c;
    }
    .step-item p {
      font-size: 0.88rem;
      color: #4e5e7e;
    }
    /* 对比表格 */
    .table-wrap {
      overflow-x: auto;
      background: #fff;
      border-radius: 20px;
      box-shadow: 0 8px 24px rgba(0,20,60,0.06);
      padding: 8px;
      margin-top: 10px;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 650px;
    }
    .compare-table th {
      background: #f0f5fe;
      color: #0a1e3c;
      font-weight: 700;
      padding: 16px 20px;
      text-align: left;
      border-bottom: 2px solid #d0def5;
      font-size: 0.95rem;
    }
    .compare-table td {
      padding: 14px 20px;
      border-bottom: 1px solid #e8effa;
      color: #2e3e5e;
      font-size: 0.92rem;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-table .highlight {
      background: #e8f0fe;
    }
    .rating-star {
      color: #ffb800;
      font-weight: 700;
    }
    .score-big {
      font-size: 1.4rem;
      font-weight: 800;
      color: #1a4bff;
    }
    /* FAQ */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 900px;
    }
    .faq-item {
      background: #fff;
      border-radius: 16px;
      box-shadow: 0 4px 14px rgba(0,20,60,0.04);
      border: 1px solid #e0e8f5;
      overflow: hidden;
      transition: 0.2s;
    }
    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 24px;
      cursor: pointer;
      font-weight: 600;
      color: #0a1e3c;
      font-size: 1rem;
      gap: 16px;
    }
    .faq-question:hover {
      background: #f8faff;
    }
    .faq-icon {
      font-size: 1.3rem;
      transition: transform 0.3s;
      color: #1a4bff;
      flex-shrink: 0;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.3s;
      padding: 0 24px;
      color: #4e5e7e;
      font-size: 0.92rem;
      line-height: 1.6;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 24px 20px;
    }
    /* 评论卡片 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 22px;
    }
    .review-card {
      background: #fff;
      border-radius: 18px;
      padding: 24px;
      box-shadow: 0 6px 16px rgba(0,20,60,0.04);
      border: 1px solid #e8effa;
      transition: 0.25s;
    }
    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 14px 28px rgba(26,75,255,0.08);
    }
    .review-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #e8edff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #1a4bff;
      font-size: 1.1rem;
    }
    .review-name {
      font-weight: 700;
      color: #0a1e3c;
      font-size: 0.95rem;
    }
    .review-role {
      font-size: 0.8rem;
      color: #7e8da6;
    }
    .review-text {
      color: #3e4e6e;
      font-size: 0.92rem;
      line-height: 1.6;
    }
    .review-stars {
      color: #ffb800;
      margin-top: 10px;
      letter-spacing: 2px;
    }
    /* 表单 */
    .form-card {
      background: #fff;
      border-radius: 24px;
      padding: 40px;
      box-shadow: 0 12px 32px rgba(0,20,60,0.08);
      max-width: 700px;
      margin: 0 auto;
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-weight: 600;
      font-size: 0.88rem;
      margin-bottom: 6px;
      color: #1a2a4a;
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 16px;
      border-radius: 12px;
      border: 1px solid #d0def5;
      font-size: 0.95rem;
      background: #f8faff;
      transition: 0.2s;
      font-family: inherit;
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      outline: none;
      border-color: #1a4bff;
      box-shadow: 0 0 0 3px rgba(26,75,255,0.12);
      background: #fff;
    }
    .form-group textarea {
      min-height: 100px;
      resize: vertical;
    }
    /* 标签云 */
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 10px;
    }
    .tag-cloud span {
      background: #fff;
      border: 1px solid #d0def5;
      padding: 6px 16px;
      border-radius: 40px;
      font-size: 0.85rem;
      color: #2e3e5e;
      transition: 0.2s;
    }
    .tag-cloud span:hover {
      background: #1a4bff;
      color: #fff;
      border-color: #1a4bff;
    }
    /* 案例展示 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 22px;
    }
    .case-item {
      background: #fff;
      border-radius: 18px;
      overflow: hidden;
      box-shadow: 0 6px 18px rgba(0,20,60,0.05);
      transition: 0.25s;
      border: 1px solid #e8effa;
    }
    .case-item:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 30px rgba(26,75,255,0.1);
    }
    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: #eef3fe;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s;
    }
    .case-item:hover .case-img-wrap img {
      transform: scale(1.04);
    }
    .case-info {
      padding: 18px 20px;
    }
    .case-info h4 {
      font-size: 1rem;
      margin-bottom: 4px;
      color: #0a1e3c;
    }
    .case-info p {
      font-size: 0.85rem;
      color: #6e7e9e;
    }
    /* 文章列表 */
    .article-list {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 16px;
    }
    .article-item {
      background: #fff;
      padding: 20px 22px;
      border-radius: 14px;
      box-shadow: 0 4px 12px rgba(0,20,60,0.03);
      border-left: 4px solid #1a4bff;
      transition: 0.2s;
    }
    .article-item:hover {
      background: #f8faff;
      transform: translateX(4px);
    }
    .article-item a {
      text-decoration: none;
      color: #1a2a4a;
      font-weight: 600;
      font-size: 0.95rem;
      display: block;
    }
    .article-item a:hover {
      color: #1a4bff;
    }
    /* 页脚 */
    .site-footer {
      background: #0a1e3c;
      color: #c0d0e8;
      padding: 50px 0 24px;
      margin-top: 70px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 36px;
    }
    .footer-brand h4 {
      color: #fff;
      font-size: 1.3rem;
      margin-bottom: 10px;
    }
    .footer-brand p {
      font-size: 0.88rem;
      line-height: 1.7;
      max-width: 280px;
    }
    .footer-col h5 {
      color: #fff;
      font-size: 1rem;
      margin-bottom: 14px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col li {
      margin-bottom: 8px;
    }
    .footer-col a {
      color: #b0c4e0;
      text-decoration: none;
      font-size: 0.88rem;
      transition: color 0.2s;
    }
    .footer-col a:hover {
      color: #fff;
    }
    .footer-qr {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-qr img {
      width: 100px;
      height: 100px;
      object-fit: contain;
      background: #fff;
      border-radius: 8px;
      padding: 4px;
    }
    .footer-bottom {
      border-top: 1px solid #1e3a5e;
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 0.8rem;
      color: #7e9ac0;
    }
    .footer-friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px 20px;
      margin-bottom: 20px;
      padding-top: 10px;
    }
    .footer-friend-links a {
      color: #b0c4e0;
      text-decoration: none;
      font-size: 0.82rem;
      transition: 0.2s;
    }
    .footer-friend-links a:hover {
      color: #fff;
    }
    /* 浮动客服 */
    .float-kefu {
      position: fixed;
      bottom: 30px;
      right: 30px;
      z-index: 200;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .float-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: #1a4bff;
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      box-shadow: 0 6px 16px rgba(26,75,255,0.35);
      cursor: pointer;
      border: none;
      transition: 0.25s;
      text-decoration: none;
    }
    .float-btn:hover {
      background: #0a3ad0;
      transform: scale(1.06);
    }
    .float-qr-pop {
      position: absolute;
      bottom: 60px;
      right: 0;
      background: #fff;
      padding: 10px;
      border-radius: 16px;
      box-shadow: 0 12px 30px rgba(0,0,0,0.15);
      display: none;
      width: 140px;
      text-align: center;
    }
    .float-qr-pop img {
      width: 100%;
      border-radius: 8px;
    }
    .float-qr-pop p {
      font-size: 0.75rem;
      color: #1a2a4a;
      margin-top: 6px;
    }
    .float-kefu:hover .float-qr-pop {
      display: block;
    }
    /* 滚动渐入 */
    .fade-up {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .fade-up.visible {
      opacity: 1;
      transform: translateY(0);
    }
    /* 响应式 */
    @media (max-width: 992px) {
      .hero h1 { font-size: 2.2rem; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; width: 100%; flex-direction: column; gap: 4px; padding: 12px 0; }
      .nav-links.show { display: flex; }
      .nav-links a { padding: 10px 16px; width: 100%; }
      .menu-toggle { display: block; }
      .nav-cta .btn { display: none; }
      .nav-wrap { align-items: flex-start; }
      .hero { padding: 60px 0 60px; }
      .hero h1 { font-size: 1.9rem; }
      .hero-actions { flex-direction: column; align-items: flex-start; }
      .form-row { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 24px; }
      .section-title { font-size: 1.6rem; }
      .float-kefu { bottom: 20px; right: 20px; }
    }
    @media (max-width: 480px) {
      .hero h1 { font-size: 1.6rem; }
      .btn { padding: 10px 22px; font-size: 0.9rem; }
      .form-card { padding: 24px; }
      .hero-stats { gap: 24px; }
    }
    /* 高亮标签 */
    .badge-blue {
      background: #1a4bff;
      color: #fff;
      font-size: 0.75rem;
      border-radius: 40px;
      padding: 2px 12px;
      display: inline-block;
      font-weight: 600;
    }
    .score-highlight {
      background: #e8f0fe;
      border-radius: 10px;
      padding: 4px 12px;
      display: inline-block;
      color: #1a4bff;
      font-weight: 700;
    }
    a.ai-page-home-link {
      color: #1a2a4a;
      text-decoration: none;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: 30px;
      transition: 0.2s;
    }
    a.ai-page-home-link:hover {
      background: #e8edff;
      color: #1a4bff;
    }
    img.ai-page-logo {
      max-width: 100%;
      height: auto;
    }
    .img-responsive {
      max-width: 100%;
      height: auto;
      display: block;
    }