:root {
      --primary-cyan: #0fa4af;
      --primary-deep: #024959;
      --accent-cyan: #14b8a6;
      --accent-mint: #2dd4bf;
      --bg-light: #f8fafc;
      --bg-card: #ffffff;
      --bg-soft: #f0fdfa;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #ccfbf1;
      --border-light: #e2e8f0;
      --shadow-sm: 0 2px 8px rgba(15, 164, 175, 0.06);
      --shadow-md: 0 10px 25px -5px rgba(2, 73, 89, 0.08);
      --shadow-lg: 0 20px 30px -10px rgba(15, 164, 175, 0.12);
      --max-width: 1200px;
    }

    * {
      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-light);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: radial-gradient(at 0% 0%, rgba(20, 184, 166, 0.05) 0px, transparent 50%),
                        radial-gradient(at 100% 100%, rgba(2, 73, 89, 0.04) 0px, transparent 50%);
      background-attachment: fixed;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    .container {
      width: 100%;
      max-width: var(--max-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, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }

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

    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .ai-page-logo {
      height: 40px;
      width: auto;
      max-width: 100%;
      display: block;
      object-fit: contain;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary-deep);
      letter-spacing: -0.5px;
    }

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

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

    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 14px;
      border-radius: 6px;
      display: block;
    }

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

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-left: 16px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      border-radius: 8px;
      font-size: 0.95rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary-cyan) 0%, var(--primary-deep) 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(15, 164, 175, 0.3);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #0d8f99 0%, #013440 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(15, 164, 175, 0.4);
      color: #ffffff;
    }

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

    .btn-outline:hover {
      background: var(--bg-soft);
      border-color: var(--primary-deep);
      transform: translateY(-2px);
    }

    .btn-sm {
      padding: 6px 14px;
      font-size: 0.85rem;
    }

    .btn-lg {
      padding: 14px 32px;
      font-size: 1.05rem;
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--primary-deep);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* 区域通用标题 */
    .section-wrap {
      padding: 80px 0;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: rgba(20, 184, 166, 0.12);
      color: var(--primary-deep);
      border: 1px solid var(--border-color);
      border-radius: 50px;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 70px 0 80px 0;
      position: relative;
      overflow: hidden;
      background: linear-gradient(180deg, rgba(240, 253, 250, 0.8) 0%, rgba(248, 250, 252, 0) 100%);
    }

    .hero-inner {
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 6px 18px;
      border-radius: 40px;
      font-size: 0.9rem;
      color: var(--primary-deep);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-badge-pulse {
      width: 8px;
      height: 8px;
      background: var(--accent-cyan);
      border-radius: 50%;
      box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.2);
    }

    .hero-title {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 800;
      color: var(--primary-deep);
      margin-bottom: 20px;
    }

    .hero-title span {
      background: linear-gradient(135deg, var(--primary-cyan) 0%, #0d9488 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 36px;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .hero-features-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 20px;
    }

    .hero-feat-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: 12px;
      padding: 24px 18px;
      text-align: left;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      border-top: 3px solid var(--primary-cyan);
    }

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

    .hero-feat-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary-deep);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .hero-feat-text {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 平台核心模型矩阵 */
    .models-bar {
      background: #ffffff;
      border-radius: 14px;
      padding: 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      margin-top: 30px;
    }

    .models-bar-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--primary-deep);
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }

    .models-tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      justify-content: center;
    }

    .model-chip {
      background: var(--bg-soft);
      border: 1px solid var(--border-color);
      color: var(--primary-deep);
      font-size: 0.85rem;
      padding: 4px 12px;
      border-radius: 20px;
      font-weight: 500;
      transition: all 0.2s;
    }

    .model-chip:hover {
      background: var(--primary-cyan);
      color: #ffffff;
      border-color: var(--primary-cyan);
    }

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

    .about-content h3 {
      font-size: 1.8rem;
      color: var(--primary-deep);
      margin-bottom: 18px;
      line-height: 1.35;
    }

    .about-content p {
      font-size: 1rem;
      color: var(--text-muted);
      margin-bottom: 16px;
      line-height: 1.7;
    }

    .about-specs {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }

    .spec-item {
      background: #ffffff;
      padding: 16px;
      border-radius: 8px;
      border-left: 4px solid var(--primary-cyan);
      box-shadow: var(--shadow-sm);
    }

    .spec-num {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary-deep);
    }

    .spec-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    .about-media-box {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-md);
      padding: 12px;
    }

    .about-media-box img {
      width: 100%;
      height: auto;
      display: block;
      border-radius: 8px;
    }

    /* 服务能力卡片网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: 14px;
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: var(--border-color);
    }

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: var(--bg-soft);
      color: var(--primary-cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
    }

    .service-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary-deep);
      margin-bottom: 12px;
    }

    .service-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }

    .service-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: auto;
    }

    .service-tags span {
      font-size: 0.75rem;
      background: var(--bg-light);
      padding: 3px 8px;
      border-radius: 4px;
      color: var(--primary-deep);
      font-weight: 500;
    }

    /* 场景矩阵多列展示 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .scenario-item {
      background: #ffffff;
      padding: 20px;
      border-radius: 10px;
      border: 1px solid var(--border-light);
      transition: all 0.25s ease;
    }

    .scenario-item:hover {
      border-color: var(--accent-cyan);
      background: var(--bg-soft);
    }

    .scenario-item h4 {
      font-size: 1.05rem;
      color: var(--primary-deep);
      margin-bottom: 8px;
    }

    .scenario-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 标准流程时间线 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .flow-step-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: 12px;
      padding: 24px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-badge {
      width: 44px;
      height: 44px;
      background: var(--primary-cyan);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      margin: 0 auto 16px auto;
      font-size: 1.1rem;
    }

    .step-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--primary-deep);
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 对比评测表格与卡片 */
    .eval-highlight {
      background: linear-gradient(135deg, var(--bg-soft) 0%, #ffffff 100%);
      border: 2px solid var(--border-color);
      border-radius: 14px;
      padding: 30px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

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

    .score-stars {
      color: #f59e0b;
      font-size: 1.5rem;
    }

    .score-number {
      font-size: 3rem;
      font-weight: 900;
      color: var(--primary-deep);
      line-height: 1;
    }

    .score-number span {
      font-size: 1.2rem;
      font-weight: 500;
      color: var(--text-muted);
    }

    .eval-info-text h4 {
      font-size: 1.3rem;
      color: var(--primary-deep);
      margin-bottom: 6px;
    }

    .eval-info-text p {
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: 12px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

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

    .compare-table th {
      background: var(--bg-soft);
      font-weight: 700;
      color: var(--primary-deep);
      font-size: 0.95rem;
    }

    .compare-table td {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

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

    .compare-table .brand-col {
      font-weight: 700;
      color: var(--primary-cyan);
      background: rgba(20, 184, 166, 0.04);
    }

    .badge-check {
      color: #059669;
      font-weight: 600;
    }

    /* 案例中心 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: #ffffff;
      border-radius: 12px;
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .case-media {
      width: 100%;
      height: 200px;
      overflow: hidden;
      background: var(--bg-soft);
    }

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

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

    .case-body {
      padding: 20px;
    }

    .case-tag {
      font-size: 0.75rem;
      color: var(--primary-cyan);
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .case-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary-deep);
      margin: 8px 0;
    }

    .case-summary {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 服务网络与加盟代理 */
    .network-agent-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    .agent-card {
      background: #ffffff;
      border-radius: 14px;
      border: 1px solid var(--border-light);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }

    .agent-card h3 {
      font-size: 1.4rem;
      color: var(--primary-deep);
      margin-bottom: 16px;
    }

    .agent-benefits {
      list-style: none;
      margin: 20px 0;
    }

    .agent-benefits li {
      margin-bottom: 12px;
      font-size: 0.95rem;
      color: var(--text-muted);
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }

    .agent-benefits li::before {
      content: "✓";
      color: var(--primary-cyan);
      font-weight: bold;
    }

    /* 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-light);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      font-style: italic;
    }

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

    .reviewer-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--bg-soft);
      color: var(--primary-cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
      border: 1px solid var(--border-color);
    }

    .reviewer-meta h5 {
      font-size: 0.95rem;
      color: var(--primary-deep);
    }

    .reviewer-meta span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 常见问题 FAQ 折叠面板 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: 10px;
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--primary-deep);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      transition: background-color 0.2s ease;
    }

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

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--primary-cyan);
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.65;
      background: #ffffff;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 24px 20px 24px;
    }

    /* 资讯文章列表 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

    .article-link-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: 10px;
      padding: 20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }

    .article-link-card:hover {
      border-color: var(--primary-cyan);
      transform: translateY(-2px);
    }

    .article-link-card h4 {
      font-size: 1.05rem;
      color: var(--primary-deep);
    }

    .article-link-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    .article-urls {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 15px;
      justify-content: center;
    }

    .article-urls a {
      font-size: 0.85rem;
      color: var(--primary-cyan);
      background: #ffffff;
      border: 1px solid var(--border-light);
      padding: 6px 14px;
      border-radius: 6px;
    }

    .article-urls a:hover {
      background: var(--bg-soft);
      border-color: var(--primary-cyan);
    }

    /* 需求匹配与表单 */
    .form-section-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: 16px;
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .form-info h3 {
      font-size: 1.6rem;
      color: var(--primary-deep);
      margin-bottom: 16px;
    }

    .form-info p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.6;
    }

    .contact-item-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .contact-item-row strong {
      color: var(--primary-deep);
    }

    .qr-container {
      margin-top: 24px;
      padding: 16px;
      background: var(--bg-soft);
      border-radius: 10px;
      display: inline-block;
      text-align: center;
      border: 1px dashed var(--border-color);
    }

    .qr-container img {
      width: 130px;
      height: 130px;
      display: block;
      margin: 0 auto 8px auto;
      border-radius: 6px;
    }

    .qr-container span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .custom-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary-deep);
    }

    .form-input,
    .form-select,
    .form-textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-light);
      border-radius: 8px;
      font-size: 0.95rem;
      color: var(--text-main);
      background: var(--bg-light);
      outline: none;
      transition: border-color 0.2s;
    }

    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
      border-color: var(--primary-cyan);
      background: #ffffff;
    }

    .form-textarea {
      resize: vertical;
      min-height: 100px;
    }

    /* 友情链接与版权页脚 */
    .site-footer {
      background: #022b33;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.9rem;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.3rem;
      margin-bottom: 12px;
    }

    .footer-brand p {
      line-height: 1.6;
      font-size: 0.88rem;
      color: #cbd5e1;
    }

    .footer-col h5 {
      color: #ffffff;
      font-size: 1rem;
      margin-bottom: 16px;
      font-weight: 600;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      color: #cbd5e1;
      font-size: 0.88rem;
    }

    .footer-links a:hover {
      color: var(--accent-mint);
    }

    .footer-friendlinks {
      padding: 20px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      margin-bottom: 30px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
    }

    .friendlink-title {
      color: #ffffff;
      font-weight: 600;
      font-size: 0.88rem;
    }

    .footer-friendlinks a {
      color: #cbd5e1;
      font-size: 0.85rem;
    }

    .footer-friendlinks a:hover {
      color: var(--accent-mint);
    }

    .footer-bottom {
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
    }

    .footer-bottom a {
      color: #94a3b8;
    }

    /* 悬浮工具栏 */
    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .tool-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary-deep);
      font-size: 1.1rem;
      transition: all 0.25s ease;
    }

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

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .hero-features-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .cases-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .mobile-toggle {
        display: block;
      }
      .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 24px 20px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: var(--shadow-md);
        display: none;
      }
      .nav-menu.show {
        display: flex;
      }
      .nav-links {
        flex-direction: column;
        width: 100%;
        align-items: stretch;
      }
      .nav-links li a {
        padding: 12px 16px;
      }
      .nav-cta {
        margin-left: 0;
        margin-top: 16px;
        width: 100%;
        justify-content: center;
      }
      .hero-title {
        font-size: 2rem;
      }
      .hero-features-grid {
        grid-template-columns: 1fr;
      }
      .about-grid {
        grid-template-columns: 1fr;
      }
      .services-grid {
        grid-template-columns: 1fr;
      }
      .scenario-grid {
        grid-template-columns: 1fr;
      }
      .flow-steps {
        grid-template-columns: 1fr;
      }
      .cases-grid {
        grid-template-columns: 1fr;
      }
      .reviews-grid {
        grid-template-columns: 1fr;
      }
      .articles-grid {
        grid-template-columns: 1fr;
      }
      .network-agent-grid {
        grid-template-columns: 1fr;
      }
      .form-section-inner {
        grid-template-columns: 1fr;
        padding: 24px;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }