:root {
      --primary: #10b981;
      --primary-dark: #059669;
      --primary-light: #ecfdf5;
      --primary-soft: #d1fae5;
      --mint-accent: #34d399;
      --text-main: #1e293b;
      --text-muted: #475569;
      --text-subtle: #64748b;
      --bg-page: #f8faf9;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --border-light: #f1f5f9;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.25s ease-in-out;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: radial-gradient(at 0% 0%, rgba(16, 185, 129, 0.04) 0px, transparent 50%),
                        radial-gradient(at 100% 100%, rgba(52, 211, 153, 0.05) 0px, transparent 50%);
      background-attachment: fixed;
    }

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

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      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;
    }
    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-logo-wrap {
      width: 130px;
      display: flex;
      align-items: center;
    }
    .brand-title-badge {
      display: inline-flex;
      align-items: center;
      padding: 2px 8px;
      font-size: 11px;
      font-weight: 600;
      color: var(--primary-dark);
      background: var(--primary-soft);
      border-radius: var(--radius-sm);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      display: inline-block;
      padding: 8px 11px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary-dark);
      background-color: var(--primary-light);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-left: 12px;
    }
    .btn-header-cta {
      display: inline-flex;
      align-items: center;
      padding: 8px 18px;
      font-size: 13px;
      font-weight: 600;
      color: #ffffff;
      background: var(--primary);
      border-radius: 9999px;
      box-shadow: 0 2px 4px rgba(16, 185, 129, 0.25);
    }
    .btn-header-cta:hover {
      background: var(--primary-dark);
      color: #ffffff;
      transform: translateY(-1px);
    }
    .nav-toggle-btn {
      display: none;
      background: transparent;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 6px;
      cursor: pointer;
    }
    .nav-toggle-btn svg {
      display: block;
      width: 22px;
      height: 22px;
      stroke: var(--text-main);
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      padding: 12px 24px;
      border-radius: var(--radius-md);
      transition: var(--transition);
      cursor: pointer;
      border: none;
      font-size: 15px;
      text-align: center;
    }
    .btn-primary {
      background: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      box-shadow: 0 6px 14px rgba(16, 185, 129, 0.4);
      transform: translateY(-2px);
      color: #ffffff;
    }
    .btn-secondary {
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid var(--border-color);
    }
    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary-dark);
      background: var(--primary-light);
    }

    /* 通用版块样式 */
    .section-block {
      padding: 72px 0;
      border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    }
    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px auto;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.5px;
      color: var(--primary-dark);
      background: var(--primary-soft);
      border-radius: 9999px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 28px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 12px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 80px 0 60px 0;
      background: linear-gradient(180deg, rgba(236, 253, 245, 0.7) 0%, rgba(248, 250, 249, 1) 100%);
      position: relative;
    }
    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-badge-row {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      margin-bottom: 20px;
      flex-wrap: wrap;
    }
    .hero-pill {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-dark);
      background: #ffffff;
      padding: 6px 16px;
      border-radius: 9999px;
      border: 1px solid var(--mint-accent);
      box-shadow: var(--shadow-sm);
    }
    .hero-title {
      font-size: 40px;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      color: var(--primary-dark);
    }
    .hero-lead {
      font-size: 17px;
      color: var(--text-muted);
      max-width: 740px;
      margin: 0 auto 32px auto;
      line-height: 1.7;
    }
    .hero-buttons {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 24px;
    }
    .metric-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: var(--transition);
    }
    .metric-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .metric-value {
      font-size: 30px;
      font-weight: 800;
      color: var(--primary-dark);
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .metric-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 平台矩阵 */
    .model-tags-wrapper {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      background: #ffffff;
      padding: 28px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .model-chip {
      background: var(--primary-light);
      border: 1px solid var(--primary-soft);
      color: var(--text-main);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }
    .model-chip:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-2px);
    }

    /* 服务能力卡片网格 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: var(--mint-accent);
    }
    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      background: var(--primary-light);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }
    .service-icon-box svg {
      width: 24px;
      height: 24px;
      stroke-width: 2;
      stroke: currentColor;
    }
    .service-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .service-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }
    .service-meta-tag {
      margin-top: 18px;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary-dark);
      display: inline-block;
    }

    /* 案例中心 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .case-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .case-img-wrap {
      aspect-ratio: 16/9;
      background: #f1f5f9;
      overflow: hidden;
    }
    .case-img-wrap.square {
      aspect-ratio: 1/1;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .case-card:hover .case-img-wrap img {
      transform: scale(1.03);
    }
    .case-info {
      padding: 20px;
    }
    .case-info h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .case-info p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 流程与步骤 */
    .step-grid {
      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: 28px 20px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .step-number {
      width: 38px;
      height: 38px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
      font-size: 15px;
    }
    .step-item h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .step-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比表格与评测 */
    .eval-overview-card {
      background: linear-gradient(135deg, var(--primary-light) 0%, #ffffff 100%);
      border: 2px solid var(--mint-accent);
      border-radius: var(--radius-md);
      padding: 32px;
      margin-bottom: 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }
    .eval-score-box {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }
    .score-number {
      font-size: 48px;
      font-weight: 900;
      color: var(--primary-dark);
      line-height: 1;
    }
    .score-total {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-subtle);
    }
    .stars-indicator {
      color: #eab308;
      font-size: 20px;
      margin-top: 4px;
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .data-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .data-table th, .data-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-light);
    }
    .data-table th {
      background-color: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .data-table tr:last-child td {
      border-bottom: none;
    }
    .data-table tr:hover td {
      background-color: var(--primary-light);
    }
    .highlight-cell {
      font-weight: 700;
      color: var(--primary-dark);
    }

    /* 需求匹配与表单 */
    .form-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
      max-width: 800px;
      margin: 0 auto;
    }
    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-bottom: 20px;
    }
    .form-group.full {
      grid-column: span 2;
    }
    .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-color: #fcfdfd;
      transition: var(--transition);
      outline: none;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
      background-color: #ffffff;
    }
    textarea.form-control {
      min-height: 120px;
      resize: vertical;
    }
    .form-submit-row {
      text-align: center;
      margin-top: 10px;
    }

    /* FAQ 手风琴 */
    .faq-list {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: var(--primary);
    }
    .faq-question {
      width: 100%;
      padding: 18px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: none;
      border: none;
      cursor: pointer;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      text-align: left;
    }
    .faq-icon {
      width: 20px;
      height: 20px;
      flex-shrink: 0;
      transition: transform 0.25s ease;
      stroke: var(--text-subtle);
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
      stroke: var(--primary-dark);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #fcfdfd;
    }
    .faq-answer-inner {
      padding: 0 24px 20px 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 客户评价 */
    .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: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .review-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--mint-accent);
    }
    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
      font-style: italic;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-light);
      padding-top: 14px;
    }
    .author-avatar {
      width: 42px;
      height: 42px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }
    .author-info h5 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 12px;
      color: var(--text-subtle);
    }

    /* 文章与资讯列表 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .article-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;
      transition: var(--transition);
    }
    .article-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .article-card h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .article-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 16px;
    }
    .article-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-subtle);
    }
    .article-link {
      font-weight: 600;
      color: var(--primary-dark);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 加盟代理板块 */
    .partner-banner {
      background: linear-gradient(135deg, #10b981 0%, #059669 100%);
      border-radius: var(--radius-lg);
      padding: 48px 40px;
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      flex-wrap: wrap;
    }
    .partner-text h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .partner-text p {
      font-size: 15px;
      opacity: 0.95;
      max-width: 600px;
      line-height: 1.6;
    }
    .partner-action .btn {
      background: #ffffff;
      color: var(--primary-dark);
      box-shadow: var(--shadow-md);
    }
    .partner-action .btn:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }

    /* 联系我们与二维码展示 */
    .contact-card-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .contact-details {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }
    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 24px;
    }
    .contact-icon {
      width: 40px;
      height: 40px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .contact-info h5 {
      font-size: 14px;
      color: var(--text-subtle);
      margin-bottom: 4px;
    }
    .contact-info p {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
    }
    .qr-showcase {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px;
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-sm);
    }
    .qr-image-container {
      width: 170px;
      height: 170px;
      padding: 10px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      background: #ffffff;
    }
    .qr-image-container img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    /* 友情链接与版权页脚 */
    .site-footer {
      background: #f1f5f9;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px 0;
      color: var(--text-muted);
    }
    .footer-links-row {
      margin-bottom: 30px;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--border-color);
    }
    .footer-links-title {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      list-style: none;
    }
    .links-list a {
      font-size: 13px;
      color: var(--text-muted);
    }
    .links-list a:hover {
      color: var(--primary-dark);
      text-decoration: underline;
    }
    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
      color: var(--text-subtle);
    }

    /* 悬浮工具栏 */
    .float-panel {
      position: fixed;
      right: 24px;
      bottom: 32px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: var(--transition);
    }
    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      transform: scale(1.05);
    }
    .float-btn svg {
      width: 20px;
      height: 20px;
      stroke: currentColor;
    }

    /* 响应式断点 */
    @media (max-width: 992px) {
      .service-grid, .case-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .nav-links {
        display: none;
      }
      .nav-toggle-btn {
        display: block;
      }
      .mobile-menu-active .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        gap: 8px;
      }
      .mobile-menu-active .nav-links li a {
        display: block;
        padding: 10px 14px;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .contact-card-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 640px) {
      .hero-title {
        font-size: 28px;
      }
      .service-grid, .case-grid, .reviews-grid, .articles-grid, .step-grid {
        grid-template-columns: 1fr;
      }
      .hero-metrics {
        grid-template-columns: 1fr;
      }
      .partner-banner {
        padding: 32px 24px;
        flex-direction: column;
        text-align: center;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }