:root {
      --primary-purple: #7028e4;
      --primary-gradient: linear-gradient(135deg, #7028e4 0%, #e5b2ca 50%, #9055ff 100%);
      --accent-purple: #8b3dff;
      --bg-light: #f8f6fc;
      --bg-card: #ffffff;
      --text-main: #1f1d2b;
      --text-muted: #5e5a73;
      --border-color: #e9e3f5;
      --container-width: 1200px;
      --shadow-sm: 0 4px 12px rgba(112, 40, 228, 0.05);
      --shadow-md: 0 10px 30px rgba(112, 40, 228, 0.1);
      --shadow-lg: 0 16px 40px rgba(112, 40, 228, 0.16);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
    }

    body {
      background: radial-gradient(circle at 10% 0%, rgba(229, 178, 202, 0.25) 0%, transparent 40%),
                  radial-gradient(circle at 90% 20%, rgba(144, 85, 255, 0.15) 0%, transparent 45%),
                  #f8f6fc;
      line-height: 1.6;
      overflow-x: hidden;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo-wrapper {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

    .logo-img-box {
      max-width: 160px;
      display: flex;
      align-items: center;
    }

    .logo-img-box img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      color: var(--text-main);
      text-decoration: none;
      font-weight: 500;
      font-size: 15px;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: all 0.25s ease;
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--primary-purple);
      background-color: rgba(112, 40, 228, 0.06);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-md);
      text-decoration: none;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      cursor: pointer;
      border: 1px solid transparent;
    }

    .btn-primary {
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(112, 40, 228, 0.3);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(112, 40, 228, 0.45);
      color: #ffffff;
    }

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

    .btn-outline:hover {
      background: rgba(112, 40, 228, 0.05);
      transform: translateY(-2px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    /* 区域通栏基底 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 6px 16px;
      background: rgba(112, 40, 228, 0.08);
      border: 1px solid rgba(112, 40, 228, 0.2);
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-purple);
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .section-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 首屏 Hero（无图片纯CSS科技感） */
    .hero-section {
      padding: 100px 0 80px;
      position: relative;
      overflow: hidden;
    }

    .hero-content {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }

    .hero-h1 {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-h1 span {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.8;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 18px;
      margin-bottom: 50px;
      flex-wrap: wrap;
    }

    .hero-cta-group .btn-lg {
      padding: 14px 36px;
      font-size: 17px;
      border-radius: 12px;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 30px;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(112, 40, 228, 0.3);
    }

    .stat-number {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary-purple);
      margin-bottom: 6px;
    }

    .stat-label {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 网格卡片 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(112, 40, 228, 0.35);
    }

    .card-icon {
      width: 52px;
      height: 52px;
      background: rgba(112, 40, 228, 0.08);
      color: var(--primary-purple);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: bold;
      margin-bottom: 20px;
    }

    .card-title {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .card-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 流程步骤 */
    .step-item {
      position: relative;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
    }

    .step-badge {
      display: inline-block;
      width: 32px;
      height: 32px;
      line-height: 32px;
      text-align: center;
      background: var(--primary-purple);
      color: #ffffff;
      border-radius: 50%;
      font-weight: 700;
      font-size: 14px;
      margin-bottom: 16px;
    }

    /* 案例图片流 */
    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }

    .case-img-holder {
      width: 100%;
      aspect-ratio: 16 / 9;
      background-color: #eee;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .case-img-holder.square {
      aspect-ratio: 1 / 1;
    }

    .case-img-holder img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .case-card:hover .case-img-holder img {
      transform: scale(1.04);
    }

    .case-info {
      padding: 20px;
    }

    /* 对比表格 */
    .table-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 15px;
    }

    .compare-table th,
    .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
    }

    .compare-table th {
      background: rgba(112, 40, 228, 0.04);
      color: var(--text-main);
      font-weight: 700;
    }

    .compare-table tr:last-child td {
      border-bottom: none;
    }

    .highlight-col {
      background: rgba(112, 40, 228, 0.03);
      font-weight: 600;
      color: var(--primary-purple);
    }

    .score-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #fff0f5;
      color: #d11e64;
      padding: 4px 12px;
      border-radius: 20px;
      font-weight: 700;
      font-size: 14px;
    }

    /* 评价卡片 */
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .avatar-placeholder {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, #7028e4, #e5b2ca);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }

    .user-meta h4 {
      font-size: 15px;
      color: var(--text-main);
    }

    .user-meta p {
      font-size: 13px;
      color: var(--text-muted);
    }

    .testimonial-body {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* FAQ 手风琴 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

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

    .faq-question {
      padding: 18px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      font-weight: 600;
      font-size: 16px;
      color: var(--text-main);
      transition: background 0.2s;
    }

    .faq-question:hover {
      background: rgba(112, 40, 228, 0.02);
    }

    .faq-arrow {
      font-size: 14px;
      color: var(--primary-purple);
      transition: transform 0.3s ease;
    }

    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #faf8fd;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 250px;
      padding: 16px 22px 20px;
      border-top: 1px solid var(--border-color);
    }

    /* 资讯与链接 */
    .article-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .article-list {
      list-style: none;
    }

    .article-list li {
      padding: 10px 0;
      border-bottom: 1px dashed var(--border-color);
    }

    .article-list li:last-child {
      border-bottom: none;
    }

    .article-list a {
      color: var(--text-main);
      text-decoration: none;
      font-size: 14px;
      transition: color 0.2s;
    }

    .article-list a:hover {
      color: var(--primary-purple);
    }

    /* 表单区 */
    .form-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      background: #faf9fd;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary-purple);
      background: #ffffff;
    }

    textarea.form-control {
      min-height: 110px;
      resize: vertical;
    }

    /* 底部通用区域 */
    .site-footer {
      background: #191426;
      color: #d1ccdf;
      padding: 60px 0 30px;
      font-size: 14px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 16px;
      margin-bottom: 20px;
      position: relative;
    }

    .footer-col p {
      line-height: 1.8;
      margin-bottom: 12px;
      color: #a7a1bc;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a,
    .friend-links a {
      color: #a7a1bc;
      text-decoration: none;
      transition: color 0.2s;
    }

    .footer-links a:hover,
    .friend-links a:hover {
      color: #ffffff;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 10px;
    }

    .friend-links a {
      background: rgba(255, 255, 255, 0.06);
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 12px;
    }

    .qr-box {
      max-width: 120px;
      background: #ffffff;
      padding: 6px;
      border-radius: var(--radius-sm);
      margin-top: 10px;
    }

    .qr-box img {
      width: 100%;
      height: auto;
      display: block;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      text-align: center;
      color: #837c9f;
      font-size: 13px;
    }

    /* 浮动客服 */
    .float-kefu {
      position: fixed;
      right: 20px;
      bottom: 80px;
      z-index: 999;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 50px;
      padding: 8px 16px;
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      transition: transform 0.2s;
    }

    .float-kefu:hover {
      transform: translateY(-3px);
    }

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

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero-h1 { font-size: 32px; }
      .grid-4, .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active { display: flex; }
      .mobile-menu-btn { display: block; }
      .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
      .hero-stats-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .section-wrap { padding: 50px 0; }
      .hero-section { padding: 60px 0 40px; }
      .form-wrapper { padding: 20px; }
    }