:root {
      --primary: #0d9488;
      --primary-light: #14b8a6;
      --primary-dark: #0f766e;
      --cyan-accent: #06b6d4;
      --cyan-soft: #ecfeff;
      --teal-soft: #f0fdfa;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #334155;
      --text-light: #64748b;
      --border-color: #ccfbf1;
      --border-light: #e2e8f0;
      --shadow-sm: 0 2px 8px rgba(13, 148, 136, 0.06);
      --shadow-md: 0 8px 24px rgba(13, 148, 136, 0.1);
      --shadow-lg: 0 16px 36px rgba(13, 148, 136, 0.14);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      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-main);
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(20, 184, 166, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.05) 0%, transparent 40%);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
    }

    /* 容器规范 */
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 通用排版 */
    h1, h2, h3, h4 {
      color: var(--text-main);
      font-weight: 700;
      line-height: 1.3;
    }

    .section-title-wrap {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 6px 16px;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary-dark);
      background: var(--cyan-soft);
      border: 1px solid var(--border-color);
      border-radius: 30px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.1rem;
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
    }

    .section-block {
      padding: 72px 0;
      position: relative;
    }

    .section-block.alt-bg {
      background: linear-gradient(180deg, rgba(240, 253, 250, 0.6) 0%, rgba(248, 250, 252, 0.9) 100%);
      border-top: 1px solid rgba(204, 251, 241, 0.6);
      border-bottom: 1px solid rgba(204, 251, 241, 0.6);
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      text-decoration: none;
      transition: var(--transition);
      cursor: pointer;
      border: none;
      line-height: 1.2;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, var(--cyan-accent) 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(13, 148, 136, 0.35);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(13, 148, 136, 0.45);
      color: #ffffff;
    }

    .btn-secondary {
      background: #ffffff;
      color: var(--primary-dark);
      border: 1px solid var(--primary);
    }

    .btn-secondary:hover {
      background: var(--teal-soft);
      transform: translateY(-2px);
    }

    .btn-lg {
      padding: 16px 36px;
      font-size: 1.125rem;
      border-radius: var(--radius-md);
    }

    /* 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);
      transition: var(--transition);
    }

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

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

    .brand-logo-box {
      width: 42px;
      height: 42px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .brand-text {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }

    .brand-tag {
      font-size: 0.75rem;
      padding: 2px 8px;
      background: var(--cyan-soft);
      color: var(--primary);
      border-radius: 4px;
      font-weight: 600;
    }

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

    .nav-item-link {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.95rem;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: 6px;
      transition: var(--transition);
    }

    .nav-item-link:hover, .nav-item-link.active {
      color: var(--primary);
      background: var(--teal-soft);
    }

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

    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-light);
      padding: 8px;
      border-radius: 6px;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 首屏 Hero (严格无图，使用纯CSS渐变与科技感结构) */
    .hero-section {
      padding: 80px 0 60px 0;
      background: linear-gradient(180deg, rgba(204, 251, 241, 0.45) 0%, rgba(240, 253, 250, 0.2) 60%, var(--bg-main) 100%);
      position: relative;
      text-align: center;
    }

    .hero-badge-group {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      padding: 6px 18px;
      border-radius: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-badge-group .dot {
      width: 8px;
      height: 8px;
      background: var(--primary-light);
      border-radius: 50%;
      animation: pulse 2s infinite;
    }

    .hero-badge-group span {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary-dark);
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 20px;
      line-height: 1.25;
      letter-spacing: -1px;
    }

    .hero-subtitle {
      font-size: 1.25rem;
      color: var(--text-muted);
      max-width: 840px;
      margin: 0 auto 36px auto;
      line-height: 1.7;
    }

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

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1080px;
      margin: 0 auto;
      text-align: left;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .stat-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: linear-gradient(180deg, var(--primary) 0%, var(--cyan-accent) 100%);
    }

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

    .stat-number {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }

    .stat-number span {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    .stat-label {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .stat-sub {
      font-size: 0.825rem;
      color: var(--text-light);
    }

    /* 多模型生态展示条 */
    .models-stream-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-top: 48px;
      box-shadow: var(--shadow-sm);
    }

    .models-stream-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-muted);
      text-align: center;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }

    .tags-cloud-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-pill {
      font-size: 0.85rem;
      font-weight: 600;
      padding: 6px 14px;
      background: var(--teal-soft);
      color: var(--primary-dark);
      border: 1px solid rgba(13, 148, 136, 0.2);
      border-radius: 20px;
      transition: var(--transition);
    }

    .model-pill:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.05);
    }

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

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

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }

    /* 平台核心能力卡片 */
    .feature-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
      position: relative;
    }

    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: var(--primary-light);
    }

    .feature-icon-box {
      width: 52px;
      height: 52px;
      background: linear-gradient(135deg, var(--teal-soft) 0%, var(--cyan-soft) 100%);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      color: var(--primary);
      margin-bottom: 20px;
    }

    .feature-card h3 {
      font-size: 1.25rem;
      margin-bottom: 12px;
    }

    .feature-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .feature-list {
      list-style: none;
      border-top: 1px dashed var(--border-light);
      padding-top: 14px;
      margin-top: auto;
    }

    .feature-list li {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .feature-list li::before {
      content: "✓";
      color: var(--primary);
      font-weight: bold;
    }

    /* 场景工坊展示 */
    .scenario-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

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

    .scenario-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 12px;
    }

    .scenario-tag {
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      background: var(--cyan-soft);
      color: var(--primary-dark);
      font-weight: 600;
    }

    .scenario-card h4 {
      font-size: 1.15rem;
      margin-bottom: 8px;
    }

    .scenario-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

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

    .process-step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 20px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

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

    .step-badge {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--cyan-accent) 100%);
      color: #ffffff;
      font-size: 1.2rem;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 18px auto;
      box-shadow: 0 4px 10px rgba(13, 148, 136, 0.3);
    }

    .process-step-card h4 {
      font-size: 1.1rem;
      margin-bottom: 10px;
    }

    .process-step-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    /* 案例图片展示容器 */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .case-item:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }

    .case-img-container {
      width: 100%;
      height: 220px;
      background: var(--teal-soft);
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .case-img-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .case-item:hover .case-img-container img {
      transform: scale(1.05);
    }

    .case-body {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .case-body h4 {
      font-size: 1.15rem;
      margin-bottom: 8px;
    }

    .case-body p {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .case-meta {
      margin-top: auto;
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 600;
    }

    /* 对比评测板块 */
    .eval-highlight-box {
      background: linear-gradient(135deg, #ffffff 0%, var(--teal-soft) 100%);
      border: 2px solid var(--primary-light);
      border-radius: var(--radius-lg);
      padding: 36px;
      margin-bottom: 40px;
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }

    .eval-score-wrap {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .eval-big-score {
      font-size: 3.5rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .eval-score-meta h3 {
      font-size: 1.35rem;
      margin-bottom: 4px;
    }

    .eval-stars {
      color: #f59e0b;
      font-size: 1.25rem;
      margin-bottom: 4px;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

    .comparison-table th, .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-light);
    }

    .comparison-table th {
      background: var(--teal-soft);
      font-weight: 700;
      color: var(--text-main);
    }

    .comparison-table th.highlight, .comparison-table td.highlight {
      background: rgba(204, 251, 241, 0.35);
      color: var(--primary-dark);
      font-weight: 600;
    }

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

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

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

    .testimonial-quote {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 18px;
      line-height: 1.6;
      font-style: italic;
    }

    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-light);
      padding-top: 14px;
    }

    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-light) 0%, var(--cyan-accent) 100%);
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
    }

    .author-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-role {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* 需求匹配与联系我们 (表单及联系信息) */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 40px;
      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: 0.95rem;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      background: #fdfdfd;
      color: var(--text-main);
      transition: var(--transition);
      outline: none;
      font-family: inherit;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
      background: #ffffff;
    }

    textarea.form-control {
      resize: vertical;
      min-height: 120px;
    }

    .contact-info-panel {
      background: linear-gradient(180deg, var(--teal-soft) 0%, #ffffff 100%);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .info-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
    }

    .info-icon {
      width: 36px;
      height: 36px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 700;
      flex-shrink: 0;
    }

    .info-detail h5 {
      font-size: 0.95rem;
      margin-bottom: 2px;
    }

    .info-detail p, .info-detail a {
      font-size: 0.9rem;
      color: var(--text-muted);
      text-decoration: none;
    }

    .qr-card-box {
      margin-top: 10px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 16px;
      text-align: center;
    }

    .qr-card-box img {
      width: 140px;
      height: 140px;
      object-fit: contain;
      margin: 0 auto 8px auto;
      display: block;
      border: 1px solid var(--border-light);
      border-radius: 6px;
    }

    .qr-card-box span {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary-dark);
    }

    /* FAQ 手风琴 */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      max-width: 900px;
      margin: 0 auto;
    }

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

    .faq-item:hover {
      border-color: var(--primary-light);
    }

    .faq-question {
      padding: 18px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      font-weight: 600;
      font-size: 1.05rem;
      user-select: none;
      background: #ffffff;
      color: var(--text-main);
    }

    .faq-toggle-icon {
      font-size: 1.25rem;
      color: var(--primary);
      transition: transform 0.3s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: var(--teal-soft);
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      padding: 16px 24px 20px 24px;
      max-height: 300px;
      border-top: 1px solid var(--border-color);
    }

    /* 文章与资讯 */
    .articles-container-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }

    .articles-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 20px;
    }

    .article-item-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 16px;
      background: var(--cyan-soft);
      color: var(--primary-dark);
      text-decoration: none;
      border-radius: 6px;
      font-size: 0.875rem;
      font-weight: 500;
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .article-item-link:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-2px);
    }

    /* 页脚规范 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      border-top: 1px solid #1e293b;
    }

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

    .footer-col h4 {
      color: #f8fafc;
      font-size: 1.1rem;
      margin-bottom: 18px;
    }

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

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

    .footer-links-list a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.9rem;
      transition: var(--transition);
    }

    .footer-links-list a:hover {
      color: var(--cyan-accent);
      padding-left: 4px;
    }

    .footer-friendly-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 10px;
    }

    .footer-friendly-links a {
      color: #cbd5e1;
      text-decoration: none;
      font-size: 0.85rem;
      background: #1e293b;
      padding: 4px 10px;
      border-radius: 4px;
      transition: var(--transition);
    }

    .footer-friendly-links a:hover {
      background: var(--primary);
      color: #ffffff;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.875rem;
    }

    .footer-bottom a {
      color: #94a3b8;
      text-decoration: none;
    }

    .footer-bottom a:hover {
      color: var(--cyan-accent);
    }

    /* 悬浮工具栏 */
    .float-toolbar {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      text-decoration: none;
      font-size: 1.25rem;
      transition: var(--transition);
      position: relative;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.08);
    }

    .float-qr-pop {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      display: none;
      width: 140px;
      text-align: center;
    }

    .float-btn:hover .float-qr-pop {
      display: block;
    }

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

    .float-qr-pop span {
      font-size: 0.75rem;
      color: var(--text-main);
      display: block;
      margin-top: 4px;
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .grid-4, .hero-stats-grid, .process-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .case-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-item-link {
        width: 100%;
        padding: 10px 14px;
      }
      .hero-title {
        font-size: 1.8rem;
      }
      .hero-subtitle {
        font-size: 1.05rem;
      }
      .grid-4, .grid-3, .grid-2, .hero-stats-grid, .process-grid, .case-gallery-grid {
        grid-template-columns: 1fr;
      }
      .eval-highlight-box {
        flex-direction: column;
        text-align: center;
      }
      .eval-score-wrap {
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }

    @keyframes pulse {
      0% { transform: scale(0.95); opacity: 0.8; }
      50% { transform: scale(1.15); opacity: 1; }
      100% { transform: scale(0.95); opacity: 0.8; }
    }