/* 全局重置与变量 */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    :root {
      --primary: #6c5ce7;
      --primary-dark: #5346c9;
      --secondary: #fd79a8;
      --accent: #00cec9;
      --accent2: #fdcb6e;
      --accent3: #e17055;
      --dark: #2d3436;
      --gray: #636e72;
      --light: #f8f9fd;
      --white: #ffffff;
      --shadow: 0 10px 30px rgba(108, 92, 231, 0.12);
      --shadow-hover: 0 18px 40px rgba(108, 92, 231, 0.22);
      --radius: 16px;
      --radius-sm: 12px;
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
      --rainbow: linear-gradient(90deg, #6c5ce7, #a29bfe, #fd79a8, #fdcb6e, #00cec9, #6c5ce7);
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
      color: var(--dark);
      background: var(--white);
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    ul {
      list-style: none;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(108, 92, 231, 0.1);
      transition: var(--transition);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo-area {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .ai-page-logo {
      height: 40px;
      width: auto;
    }
    .logo-text {
      font-size: 1.25rem;
      font-weight: 800;
      background: var(--rainbow);
      background-size: 300% 100%;
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      animation: rainbowMove 8s linear infinite;
    }
    @keyframes rainbowMove {
      0% { background-position: 0% 50%; }
      100% { background-position: 300% 50%; }
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      flex-wrap: wrap;
    }
    .nav-links a {
      display: inline-block;
      padding: 8px 12px;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--dark);
      border-radius: 8px;
      transition: var(--transition);
      white-space: nowrap;
    }
    .nav-links a:hover {
      color: var(--primary);
      background: rgba(108, 92, 231, 0.08);
    }
    .nav-cta {
      display: inline-block;
      padding: 10px 24px;
      background: var(--primary);
      color: #fff !important;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.92rem;
      transition: var(--transition);
      margin-left: 8px;
      box-shadow: 0 4px 14px rgba(108, 92, 231, 0.4);
    }
    .nav-cta:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(108, 92, 231, 0.5);
    }
    .mobile-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-toggle span {
      display: block;
      width: 26px;
      height: 2.5px;
      background: var(--dark);
      border-radius: 2px;
      transition: var(--transition);
    }
    /* Hero 首屏 - 无图片 */
    .hero {
      position: relative;
      padding: 90px 0 80px;
      background: linear-gradient(135deg, #f8f6ff 0%, #f0f4ff 40%, #fff5f9 100%);
      overflow: hidden;
    }
    .hero::before {
      content: '';
      position: absolute;
      width: 600px;
      height: 600px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(108,92,231,0.15) 0%, transparent 70%);
      top: -200px;
      right: -100px;
      animation: floatOrb 14s ease-in-out infinite;
    }
    .hero::after {
      content: '';
      position: absolute;
      width: 400px;
      height: 400px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(253,121,168,0.13) 0%, transparent 70%);
      bottom: -150px;
      left: -100px;
      animation: floatOrb 18s ease-in-out infinite reverse;
    }
    @keyframes floatOrb {
      0%, 100% { transform: translate(0, 0) scale(1); }
      50% { transform: translate(40px, -30px) scale(1.1); }
    }
    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      color: var(--dark);
    }
    .hero-content h1 .highlight {
      background: var(--rainbow);
      background-size: 200% 100%;
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      animation: rainbowMove 6s linear infinite;
    }
    .hero-sub {
      font-size: 1.08rem;
      color: var(--gray);
      margin-bottom: 18px;
      max-width: 520px;
    }
    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 18px;
    }
    .hero-badges span {
      padding: 6px 16px;
      background: #fff;
      border: 1px solid rgba(108, 92, 231, 0.2);
      border-radius: 50px;
      font-size: 0.82rem;
      color: var(--primary);
      font-weight: 600;
      box-shadow: 0 2px 8px rgba(108,92,231,0.06);
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 10px;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 34px;
      background: var(--primary);
      color: #fff;
      border-radius: 50px;
      font-weight: 700;
      font-size: 1rem;
      border: none;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 8px 26px rgba(108, 92, 231, 0.42);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-3px);
      box-shadow: 0 14px 34px rgba(108, 92, 231, 0.5);
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 30px;
      background: transparent;
      color: var(--primary);
      border: 2px solid var(--primary);
      border-radius: 50px;
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-3px);
      box-shadow: 0 10px 26px rgba(108,92,231,0.35);
    }
    .hero-stats {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }
    .stat-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 26px 22px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(108,92,231,0.08);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .stat-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--rainbow);
      background-size: 100% 300%;
    }
    .stat-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    .stat-num {
      font-size: 2rem;
      font-weight: 800;
      background: var(--rainbow);
      background-size: 200% 100%;
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      line-height: 1.2;
    }
    .stat-label {
      font-size: 0.88rem;
      color: var(--gray);
      margin-top: 4px;
    }
    /* 通用区块 */
    .section {
      padding: 80px 0;
    }
    .section-alt {
      background: var(--light);
    }
    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }
    .section-tag {
      display: inline-block;
      padding: 6px 18px;
      background: rgba(108, 92, 231, 0.1);
      color: var(--primary);
      border-radius: 50px;
      font-size: 0.82rem;
      font-weight: 700;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }
    .section-head h2 {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 14px;
    }
    .section-head p {
      color: var(--gray);
      font-size: 1rem;
    }
    /* 平台介绍 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 50px;
      align-items: center;
    }
    .intro-text h2 {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 18px;
      color: var(--dark);
    }
    .intro-text p {
      color: var(--gray);
      margin-bottom: 16px;
      font-size: 1rem;
    }
    .intro-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }
    .intro-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      padding: 12px 14px;
      background: #fff;
      border-radius: var(--radius-sm);
      box-shadow: 0 4px 14px rgba(108,92,231,0.06);
      border: 1px solid rgba(108,92,231,0.06);
      transition: var(--transition);
    }
    .intro-feature-item:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow);
    }
    .intro-feature-item .icon {
      width: 32px;
      height: 32px;
      border-radius: 10px;
      background: rgba(108,92,231,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-size: 1rem;
      color: var(--primary);
    }
    .intro-feature-item h4 {
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 2px;
    }
    .intro-feature-item p {
      font-size: 0.78rem;
      color: var(--gray);
      margin: 0;
    }
    .intro-visual {
      position: relative;
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-hover);
    }
    .intro-visual img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.6s ease;
    }
    .intro-visual:hover img {
      transform: scale(1.03);
    }
    /* 服务能力卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 24px;
    }
    .service-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 30px 24px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(108,92,231,0.06);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .service-card::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: var(--rainbow);
      background-size: 300% 100%;
      opacity: 0;
      transition: var(--transition);
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .service-card:hover::after {
      opacity: 1;
      animation: rainbowMove 3s linear infinite;
    }
    .service-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(108,92,231,0.12), rgba(253,121,168,0.1));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 18px;
    }
    .service-card h3 {
      font-size: 1.08rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--dark);
    }
    .service-card p {
      font-size: 0.88rem;
      color: var(--gray);
      line-height: 1.55;
    }
    /* 模型标签云 */
    .model-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 36px;
    }
    .model-tag {
      padding: 8px 18px;
      background: #fff;
      border-radius: 50px;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--primary);
      border: 1px solid rgba(108,92,231,0.18);
      transition: var(--transition);
      cursor: default;
      box-shadow: 0 2px 8px rgba(108,92,231,0.04);
    }
    .model-tag:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(108,92,231,0.3);
    }
    /* 流程步骤 */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      counter-reset: step;
    }
    .step-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 30px 22px;
      text-align: center;
      box-shadow: var(--shadow);
      border: 1px solid rgba(108,92,231,0.06);
      transition: var(--transition);
      position: relative;
    }
    .step-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    .step-num {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), #a29bfe);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      margin: 0 auto 18px;
    }
    .step-card h3 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 0.84rem;
      color: var(--gray);
    }
    /* 案例展示 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 24px;
    }
    .case-card {
      border-radius: var(--radius);
      overflow: hidden;
      background: #fff;
      box-shadow: var(--shadow);
      transition: var(--transition);
      border: 1px solid rgba(108,92,231,0.06);
    }
    .case-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .case-img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }
    .case-body {
      padding: 20px 22px 24px;
    }
    .case-body h3 {
      font-size: 1.02rem;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .case-body p {
      font-size: 0.84rem;
      color: var(--gray);
    }
    .case-tag {
      display: inline-block;
      padding: 3px 12px;
      background: rgba(108,92,231,0.08);
      color: var(--primary);
      border-radius: 50px;
      font-size: 0.72rem;
      font-weight: 600;
      margin-bottom: 8px;
    }
    /* 对比表格 */
    .compare-table-wrap {
      overflow-x: auto;
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      background: #fff;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 700px;
    }
    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      text-align: left;
      font-size: 0.9rem;
      border-bottom: 1px solid rgba(108,92,231,0.08);
    }
    .compare-table thead th {
      background: linear-gradient(135deg, var(--primary), #8e7cf0);
      color: #fff;
      font-weight: 700;
      font-size: 0.92rem;
    }
    .compare-table tbody tr:hover {
      background: rgba(108,92,231,0.03);
    }
    .compare-table td:first-child {
      font-weight: 600;
      color: var(--dark);
    }
    .rating-stars {
      color: #fdcb6e;
      font-size: 1.05rem;
      letter-spacing: 2px;
    }
    .score-badge {
      display: inline-block;
      padding: 4px 14px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #fff;
      border-radius: 50px;
      font-weight: 800;
      font-size: 0.9rem;
    }
    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 24px;
    }
    .review-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 28px 26px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(108,92,231,0.06);
      transition: var(--transition);
      position: relative;
    }
    .review-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    .review-card::before {
      content: '"';
      position: absolute;
      top: 10px;
      right: 22px;
      font-size: 4rem;
      line-height: 1;
      color: rgba(108,92,231,0.08);
      font-family: Georgia, serif;
      font-weight: 900;
    }
    .review-stars {
      color: #fdcb6e;
      font-size: 0.95rem;
      letter-spacing: 2px;
      margin-bottom: 10px;
    }
    .review-text {
      font-size: 0.9rem;
      color: var(--gray);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .review-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 700;
      font-size: 0.9rem;
      flex-shrink: 0;
    }
    .review-info h4 {
      font-size: 0.9rem;
      font-weight: 700;
    }
    .review-info p {
      font-size: 0.78rem;
      color: var(--gray);
    }
    /* 表单 */
    .form-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: start;
    }
    .form-info h2 {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .form-info p {
      color: var(--gray);
      margin-bottom: 24px;
      font-size: 0.95rem;
    }
    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      margin-bottom: 20px;
    }
    .contact-item .ci-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: rgba(108,92,231,0.09);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.15rem;
      flex-shrink: 0;
    }
    .contact-item h4 {
      font-size: 0.92rem;
      font-weight: 700;
      margin-bottom: 2px;
    }
    .contact-item p {
      font-size: 0.86rem;
      color: var(--gray);
      margin: 0;
      word-break: break-all;
    }
    .contact-qr {
      margin-top: 10px;
    }
    .contact-qr img {
      width: 140px;
      height: 140px;
      border-radius: 12px;
      border: 1px solid rgba(108,92,231,0.15);
      object-fit: cover;
    }
    .contact-qr p {
      font-size: 0.78rem;
      color: var(--gray);
      margin-top: 6px;
    }
    .enquiry-form {
      background: #fff;
      border-radius: var(--radius);
      padding: 36px 32px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(108,92,231,0.08);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 0.86rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--dark);
    }
    .form-group label .required {
      color: var(--accent3);
      margin-left: 2px;
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1.5px solid rgba(108,92,231,0.2);
      border-radius: 10px;
      font-size: 0.92rem;
      font-family: inherit;
      color: var(--dark);
      background: #fafbff;
      transition: var(--transition);
      outline: none;
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      background: #fff;
      box-shadow: 0 0 0 3px rgba(108,92,231,0.12);
    }
    .form-group textarea {
      resize: vertical;
      min-height: 100px;
    }
    .form-submit {
      width: 100%;
      padding: 14px;
      background: var(--primary);
      color: #fff;
      border: none;
      border-radius: 50px;
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 8px 24px rgba(108,92,231,0.35);
    }
    .form-submit:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(108,92,231,0.45);
    }
    /* 文章列表 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 20px;
    }
    .article-card {
      background: #fff;
      border-radius: var(--radius-sm);
      padding: 22px 20px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(108,92,231,0.06);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .article-card h3 {
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 8px;
      line-height: 1.5;
    }
    .article-card p {
      font-size: 0.82rem;
      color: var(--gray);
      margin-bottom: 14px;
    }
    .article-link {
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: var(--transition);
    }
    .article-link:hover {
      gap: 8px;
    }
    /* FAQ */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #fff;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      box-shadow: 0 2px 12px rgba(108,92,231,0.06);
      border: 1px solid rgba(108,92,231,0.08);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item:hover {
      box-shadow: 0 6px 20px rgba(108,92,231,0.1);
    }
    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 24px;
      font-size: 0.95rem;
      font-weight: 600;
      cursor: pointer;
      color: var(--dark);
      transition: var(--transition);
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: rgba(108,92,231,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      transition: var(--transition);
      font-size: 0.85rem;
      color: var(--primary);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      background: var(--primary);
      color: #fff;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    }
    .faq-answer-inner {
      padding: 0 24px 20px;
      font-size: 0.88rem;
      color: var(--gray);
      line-height: 1.7;
    }
    /* Token 比价 */
    .price-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
      gap: 20px;
    }
    .price-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 28px 24px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(108,92,231,0.08);
      text-align: center;
      transition: var(--transition);
    }
    .price-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    .price-card .model-name {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .price-card .price-value {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .price-card .price-unit {
      font-size: 0.8rem;
      color: var(--gray);
      margin-bottom: 12px;
    }
    .price-card .price-compare {
      font-size: 0.8rem;
      color: var(--accent3);
      text-decoration: line-through;
    }
    .price-card .price-save {
      display: inline-block;
      margin-top: 10px;
      padding: 4px 14px;
      background: rgba(0,206,201,0.1);
      color: var(--accent);
      border-radius: 50px;
      font-size: 0.78rem;
      font-weight: 700;
    }
    /* 时间线 */
    .timeline {
      position: relative;
      max-width: 800px;
      margin: 0 auto;
      padding-left: 40px;
    }
    .timeline::before {
      content: '';
      position: absolute;
      left: 14px;
      top: 0;
      bottom: 0;
      width: 3px;
      background: linear-gradient(to bottom, var(--primary), var(--secondary), var(--accent2));
      border-radius: 3px;
    }
    .timeline-item {
      position: relative;
      margin-bottom: 36px;
      padding-left: 20px;
    }
    .timeline-item::before {
      content: '';
      position: absolute;
      left: -32px;
      top: 6px;
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: var(--primary);
      border: 3px solid #fff;
      box-shadow: 0 0 0 3px rgba(108,92,231,0.2);
    }
    .timeline-item h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 4px;
    }
    .timeline-item p {
      font-size: 0.86rem;
      color: var(--gray);
    }
    /* 服务网络 */
    .network-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 20px;
    }
    .network-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 24px 22px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(108,92,231,0.06);
      transition: var(--transition);
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .network-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .network-dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--accent);
      flex-shrink: 0;
      box-shadow: 0 0 0 4px rgba(0,206,201,0.15);
    }
    .network-card h4 {
      font-size: 0.92rem;
      font-weight: 700;
    }
    .network-card p {
      font-size: 0.8rem;
      color: var(--gray);
    }
    /* 友情链接 */
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
      margin-top: 30px;
    }
    .friend-links a {
      padding: 8px 20px;
      background: #fff;
      border: 1px solid rgba(108,92,231,0.15);
      border-radius: 50px;
      font-size: 0.84rem;
      color: var(--gray);
      transition: var(--transition);
    }
    .friend-links a:hover {
      color: var(--primary);
      border-color: var(--primary);
      box-shadow: 0 4px 14px rgba(108,92,231,0.12);
      transform: translateY(-2px);
    }
    /* 页脚 */
    .site-footer {
      background: #1a1a2e;
      color: #c8c8d4;
      padding: 60px 0 30px;
      position: relative;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand .footer-logo {
      height: 36px;
      margin-bottom: 14px;
    }
    .footer-brand p {
      font-size: 0.86rem;
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .footer-social {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .footer-social span {
      font-size: 0.8rem;
      padding: 5px 12px;
      background: rgba(255,255,255,0.06);
      border-radius: 50px;
    }
    .footer-col h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul li a {
      font-size: 0.86rem;
      color: #c8c8d4;
      transition: var(--transition);
    }
    .footer-col ul li a:hover {
      color: var(--accent2);
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding-top: 24px;
      text-align: center;
      font-size: 0.8rem;
      color: #8a8a9e;
    }
    /* 浮动客服 */
    .float-service {
      position: fixed;
      right: 22px;
      bottom: 100px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .float-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      box-shadow: 0 6px 20px rgba(108,92,231,0.4);
      cursor: pointer;
      transition: var(--transition);
      border: none;
      position: relative;
    }
    .float-btn:hover {
      transform: translateY(-4px) scale(1.06);
      box-shadow: 0 12px 28px rgba(108,92,231,0.5);
    }
    .float-btn.qq {
      background: linear-gradient(135deg, #00b4d8, #0077b6);
      box-shadow: 0 6px 20px rgba(0,119,182,0.4);
    }
    .float-btn.wechat {
      background: linear-gradient(135deg, #07c160, #05a34e);
      box-shadow: 0 6px 20px rgba(7,193,96,0.4);
    }
    .float-tip {
      position: absolute;
      right: 64px;
      top: 50%;
      transform: translateY(-50%) scale(0.9);
      background: rgba(30,30,46,0.92);
      color: #fff;
      padding: 6px 14px;
      border-radius: 8px;
      font-size: 0.78rem;
      white-space: nowrap;
      opacity: 0;
      pointer-events: none;
      transition: var(--transition);
    }
    .float-btn:hover .float-tip {
      opacity: 1;
      transform: translateY(-50%) scale(1);
    }
    .back-top {
      position: fixed;
      right: 22px;
      bottom: 30px;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #fff;
      border: 1px solid rgba(108,92,231,0.2);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      box-shadow: 0 4px 16px rgba(0,0,0,0.1);
      cursor: pointer;
      z-index: 999;
      transition: var(--transition);
      opacity: 0;
      pointer-events: none;
    }
    .back-top.show {
      opacity: 1;
      pointer-events: auto;
    }
    .back-top:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-3px);
    }
    /* 滚动渐入 */
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }
    /* 响应式 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .hero-content h1 {
        font-size: 2.4rem;
      }
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        max-width: 500px;
      }
      .intro-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .form-wrap {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 16px 24px 24px;
        gap: 0;
        box-shadow: 0 12px 30px rgba(0,0,0,0.08);
        border-bottom: 1px solid rgba(108,92,231,0.1);
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links a {
        padding: 12px 8px;
        border-bottom: 1px solid rgba(108,92,231,0.06);
      }
      .nav-links a:last-child {
        border-bottom: none;
      }
      .nav-cta {
        margin-left: 0;
        margin-top: 10px;
        text-align: center;
      }
      .mobile-toggle {
        display: flex;
      }
      .hero {
        padding: 60px 0 50px;
      }
      .hero-content h1 {
        font-size: 1.9rem;
      }
      .hero-sub {
        font-size: 0.95rem;
      }
      .section {
        padding: 56px 0;
      }
      .section-head h2 {
        font-size: 1.6rem;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .hero-stats {
        grid-template-columns: 1fr 1fr;
      }
      .intro-features {
        grid-template-columns: 1fr;
      }
      .float-service {
        right: 14px;
        bottom: 80px;
      }
      .float-btn {
        width: 46px;
        height: 46px;
        font-size: 1.1rem;
      }
      .back-top {
        right: 14px;
        bottom: 24px;
      }
    }
    @media (max-width: 480px) {
      .container {
        padding: 0 16px;
      }
      .hero-content h1 {
        font-size: 1.65rem;
      }
      .hero-actions {
        flex-direction: column;
      }
      .btn-primary, .btn-outline {
        width: 100%;
        justify-content: center;
      }
      .hero-stats {
        grid-template-columns: 1fr;
      }
      .stat-num {
        font-size: 1.6rem;
      }
      .enquiry-form {
        padding: 24px 18px;
      }
      .case-img {
        height: 170px;
      }
    }