:root {
      --primary-color: #0da86c;
      --primary-hover: #0a8e5a;
      --primary-light: #e6f9f0;
      --primary-soft: #f2fbf7;
      --primary-border: #bbf0d7;
      --accent-color: #10b981;
      --text-main: #142820;
      --text-muted: #4b6358;
      --text-subtle: #738a80;
      --bg-body: #f7fbf9;
      --bg-card: #ffffff;
      --border-color: #e2ede7;
      --shadow-sm: 0 2px 8px rgba(13, 168, 108, 0.05);
      --shadow-md: 0 8px 24px rgba(13, 168, 108, 0.08);
      --shadow-lg: 0 16px 36px rgba(13, 168, 108, 0.12);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --container-width: 1200px;
      --transition: all 0.28s ease;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-body);
      color: var(--text-main);
      line-height: 1.65;
      font-size: 15px;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

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

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      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-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .logo-area .logo-img-wrapper {
      max-height: 46px;
      max-width: 160px;
      display: flex;
      align-items: center;
    }

    .logo-area .brand-sub {
      font-size: 13px;
      color: var(--text-muted);
      border-left: 1px solid var(--primary-border);
      padding-left: 12px;
      font-weight: 500;
      display: none;
    }

    @media (min-width: 768px) {
      .logo-area .brand-sub {
        display: block;
      }
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
    }

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

    .nav-links li a {
      display: block;
      padding: 8px 14px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-main);
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover {
      color: var(--primary-color);
      background-color: var(--primary-soft);
    }

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

    .btn-header {
      padding: 9px 18px;
      font-size: 14px;
      font-weight: 600;
      color: #ffffff;
      background-color: var(--primary-color);
      border-radius: var(--radius-sm);
      box-shadow: 0 4px 12px rgba(13, 168, 108, 0.25);
    }

    .btn-header:hover {
      background-color: var(--primary-hover);
      color: #ffffff;
    }

    .menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 8px;
      border-radius: var(--radius-sm);
      cursor: pointer;
    }

    .menu-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background-color: var(--text-main);
      margin: 4px 0;
      transition: var(--transition);
    }

    /* 首屏 Hero - 无图片，春绿薄荷纯净清新渐变与几何卡片 */
    .hero-section {
      background: linear-gradient(135deg, #e9fbf3 0%, #f6fcf9 50%, #dff7ec 100%);
      padding: 80px 0 70px 0;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--primary-border);
    }

    .hero-content {
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background-color: #ffffff;
      border: 1px solid var(--primary-border);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-color);
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      background-color: var(--accent-color);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent-color);
    }

    .hero-title {
      font-size: 40px;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-desc {
      font-size: 17px;
      color: var(--text-muted);
      margin-bottom: 36px;
      max-width: 740px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-btn-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .btn-main-action {
      background-color: var(--primary-color);
      color: #ffffff;
      padding: 14px 34px;
      font-size: 16px;
      font-weight: 600;
      border-radius: var(--radius-md);
      box-shadow: 0 8px 20px rgba(13, 168, 108, 0.3);
    }

    .btn-main-action:hover {
      background-color: var(--primary-hover);
      color: #ffffff;
      transform: translateY(-2px);
    }

    .btn-secondary-action {
      background-color: #ffffff;
      color: var(--primary-color);
      border: 1px solid var(--primary-border);
      padding: 14px 28px;
      font-size: 16px;
      font-weight: 600;
      border-radius: var(--radius-md);
    }

    .btn-secondary-action:hover {
      background-color: var(--primary-soft);
      border-color: var(--primary-color);
    }

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

    .stat-card {
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid var(--primary-border);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .stat-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-color);
    }

    .stat-val {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 通用Section布局 */
    .section {
      padding: 70px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .section-alt {
      background-color: #ffffff;
    }

    .section-header {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 48px auto;
    }

    .section-tag {
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-color);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
      display: inline-block;
    }

    .section-title {
      font-size: 28px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .section-intro {
      font-size: 15px;
      color: var(--text-muted);
    }

    /* 平台介绍与关于我们 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-info h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .about-info p {
      margin-bottom: 16px;
      color: var(--text-muted);
    }

    .highlight-pill-group {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }

    .highlight-pill {
      background: var(--primary-soft);
      border: 1px solid var(--primary-border);
      color: var(--primary-color);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 500;
    }

    .media-card-frame {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      background-color: #ffffff;
    }

    /* 模型矩阵徽标池 */
    .model-tags-box {
      background: var(--primary-soft);
      border: 1px solid var(--primary-border);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-top: 30px;
    }

    .model-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 12px;
    }

    .model-item {
      background: #ffffff;
      border: 1px solid var(--primary-border);
      color: var(--text-main);
      font-size: 13px;
      font-weight: 500;
      padding: 5px 12px;
      border-radius: var(--radius-sm);
      box-shadow: 0 1px 3px rgba(0,0,0,0.02);
    }

    /* 服务能力与场景网格 */
    .cards-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .feature-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-color);
    }

    .feature-icon-bar {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--primary-light);
      color: var(--primary-color);
      font-weight: 700;
      font-size: 18px;
      margin-bottom: 16px;
    }

    .feature-card h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .feature-card p {
      color: var(--text-muted);
      font-size: 14px;
      flex-grow: 1;
    }

    /* 流程步骤 */
    .steps-wrapper {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .step-num {
      width: 36px;
      height: 36px;
      line-height: 36px;
      border-radius: 50%;
      background: var(--primary-color);
      color: #ffffff;
      font-weight: 700;
      margin: 0 auto 16px auto;
    }

    .step-item h4 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 8px;
    }

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

    /* 对比评测专属样式 */
    .eval-highlight-box {
      background: linear-gradient(135deg, #ffffff 0%, #edf9f3 100%);
      border: 2px solid var(--primary-border);
      border-radius: var(--radius-lg);
      padding: 30px;
      margin-bottom: 36px;
      box-shadow: var(--shadow-md);
    }

    .eval-badge-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 24px;
      padding-bottom: 20px;
      border-bottom: 1px solid var(--primary-border);
    }

    .score-wrap {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }

    .score-num {
      font-size: 42px;
      font-weight: 900;
      color: var(--primary-color);
    }

    .score-max {
      font-size: 18px;
      color: var(--text-subtle);
    }

    .star-rating {
      color: #f59e0b;
      font-size: 20px;
      font-weight: 700;
      letter-spacing: 2px;
    }

    .compare-table-wrapper {
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

    .compare-table th {
      background: var(--primary-soft);
      color: var(--text-main);
      font-weight: 600;
    }

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

    .highlight-col {
      background-color: rgba(13, 168, 108, 0.04);
      font-weight: 600;
      color: var(--primary-color);
    }

    /* 案例中心展示 */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

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

    .case-image-holder {
      background: var(--primary-soft);
      overflow: hidden;
    }

    .case-content {
      padding: 20px;
    }

    .case-content h4 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 8px;
    }

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

    /* 需求匹配表单与联系方式 */
    .form-grid-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: start;
    }

    .contact-card-group {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }

    .contact-item-row {
      display: flex;
      gap: 16px;
      margin-bottom: 20px;
      align-items: flex-start;
    }

    .contact-icon {
      width: 40px;
      height: 40px;
      border-radius: 8px;
      background: var(--primary-light);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
    }

    .qr-box {
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px dashed var(--border-color);
      text-align: center;
    }

    .qr-box .qr-img-wrapper {
      max-width: 140px;
      margin: 12px auto;
      border: 2px solid var(--primary-border);
      border-radius: var(--radius-sm);
      overflow: hidden;
    }

    .form-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      background-color: var(--bg-body);
      transition: var(--transition);
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: var(--primary-color);
      background-color: #ffffff;
      box-shadow: 0 0 0 3px rgba(13, 168, 108, 0.15);
    }

    .btn-submit {
      width: 100%;
      background-color: var(--primary-color);
      color: #ffffff;
      padding: 13px;
      font-size: 16px;
      font-weight: 600;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 6px 16px rgba(13, 168, 108, 0.25);
      transition: var(--transition);
    }

    .btn-submit:hover {
      background-color: var(--primary-hover);
    }

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-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;
    }

    .review-user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    .review-user-meta h4 {
      font-size: 15px;
      font-weight: 600;
    }

    .review-user-meta span {
      font-size: 12px;
      color: var(--text-subtle);
    }

    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* FAQ 折叠面板 */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--text-main);
    }

    .faq-question:hover {
      color: var(--primary-color);
      background-color: var(--primary-soft);
    }

    .faq-icon {
      font-size: 18px;
      font-weight: 400;
      color: var(--primary-color);
      transition: var(--transition);
    }

    .faq-answer {
      padding: 0 24px 18px 24px;
      font-size: 14px;
      color: var(--text-muted);
      display: none;
      border-top: 1px solid transparent;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      display: block;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 资讯与友情链接 */
    .news-list-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

    .news-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
    }

    .news-card h4 a:hover {
      color: var(--primary-color);
    }

    .ext-links-bar {
      margin-top: 20px;
      padding: 16px;
      background: var(--primary-soft);
      border-radius: var(--radius-sm);
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }

    .ext-links-bar a {
      color: var(--primary-color);
      font-size: 13px;
      font-weight: 500;
      text-decoration: underline;
    }

    /* 页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 24px 0;
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .footer-col ul {
      list-style: none;
    }

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

    .footer-col ul li a {
      color: var(--text-muted);
      font-size: 14px;
    }

    .footer-col ul li a:hover {
      color: var(--primary-color);
    }

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      text-align: center;
      color: var(--text-subtle);
      font-size: 13px;
    }

    .friend-links-area {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
      margin-bottom: 16px;
    }

    .friend-links-area a {
      color: var(--text-muted);
      font-size: 13px;
    }

    .friend-links-area a:hover {
      color: var(--primary-color);
    }

    /* 悬浮客服挂件与返回顶部 */
    .float-dock {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .dock-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--primary-border);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-color);
      font-weight: 700;
      cursor: pointer;
      font-size: 14px;
      transition: var(--transition);
    }

    .dock-btn:hover {
      background: var(--primary-color);
      color: #ffffff;
      transform: scale(1.06);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 32px;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cards-grid-3, .cards-grid-4, .steps-wrapper, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid, .case-gallery-grid, .form-grid-layout, .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .menu-toggle {
        display: block;
      }
      .nav-wrapper {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 20px;
        box-shadow: var(--shadow-md);
      }
      .nav-wrapper.active {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 10px 0;
        border-bottom: 1px solid var(--border-color);
      }
    }

    @media (max-width: 600px) {
      .hero-title {
        font-size: 26px;
      }
      .hero-stats-grid, .cards-grid-3, .cards-grid-4, .steps-wrapper, .reviews-grid, .news-list-grid {
        grid-template-columns: 1fr;
      }
      .eval-badge-row {
        flex-direction: column;
        align-items: flex-start;
      }
      .btn-main-action, .btn-secondary-action {
        width: 100%;
        text-align: center;
      }
    }