:root {
      --primary-color: #059669;
      --primary-hover: #047857;
      --accent-mint: #10b981;
      --accent-light: #ecfdf5;
      --accent-pale: #f0fdf4;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-soft: #64748b;
      --border-color: #d1fae5;
      --border-subtle: #e2e8f0;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(16, 185, 129, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 10px 15px -3px rgba(5, 150, 105, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-stack);
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.2s ease;
    }

    ul, ol {
      list-style: none;
    }

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

    .section-spacing {
      padding-top: 64px;
      padding-bottom: 64px;
    }

    .section-header {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background-color: var(--accent-light);
      color: var(--primary-color);
      font-size: 0.875rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      border: 1px solid var(--border-color);
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.02em;
    }

    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      margin-top: 10px;
      max-width: 680px;
      margin-left: auto;
      margin-right: auto;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .brand-area .ai-page-logo {
      height: 38px;
      width: auto;
      display: block;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary-color);
      letter-spacing: -0.01em;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-links li a {
      display: block;
      padding: 8px 12px;
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      border: 1px solid transparent;
      text-align: center;
    }

    .btn-primary {
      background-color: var(--primary-color);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(5, 150, 105, 0.25);
    }

    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(5, 150, 105, 0.35);
      color: #ffffff;
    }

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

    .btn-outline:hover {
      background-color: var(--accent-light);
      border-color: var(--accent-mint);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      color: var(--text-main);
    }

    /* 首屏 Hero */
    .hero-section {
      background: linear-gradient(180deg, #ecfdf5 0%, #f0fdf4 50%, var(--bg-page) 100%);
      padding-top: 72px;
      padding-bottom: 72px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-full);
      font-size: 0.875rem;
      color: var(--primary-color);
      font-weight: 600;
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.03em;
      max-width: 900px;
      margin: 0 auto 20px auto;
    }

    .hero-desc {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto 36px auto;
      line-height: 1.7;
    }

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

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

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-stat-card {
      background: #ffffff;
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

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

    .hero-stat-card .num {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--primary-color);
      display: block;
      margin-bottom: 4px;
    }

    .hero-stat-card .label {
      font-size: 0.875rem;
      color: var(--text-soft);
    }

    /* 平台介绍 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: stretch;
    }

    .intro-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .intro-card h3 {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .intro-card p {
      color: var(--text-muted);
      font-size: 0.975rem;
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .intro-feature-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .intro-feature-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
      color: var(--text-main);
      font-weight: 500;
    }

    .intro-feature-item::before {
      content: "✓";
      color: var(--accent-mint);
      font-weight: bold;
    }

    /* 模型矩阵与标签云 */
    .model-tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-tag {
      padding: 8px 16px;
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-full);
      font-size: 0.875rem;
      font-weight: 500;
      color: var(--text-muted);
      transition: all 0.2s ease;
    }

    .model-tag:hover {
      border-color: var(--accent-mint);
      color: var(--primary-color);
      background-color: var(--accent-pale);
      transform: translateY(-1px);
    }

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

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 28px;
      transition: all 0.3s ease;
      position: relative;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      border-color: var(--border-color);
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }

    .service-badge {
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      background: var(--accent-light);
      color: var(--primary-color);
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
    }

    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .service-card p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 行业方案 */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .solution-box {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: left;
      transition: all 0.25s ease;
    }

    .solution-box:hover {
      border-color: var(--accent-mint);
      box-shadow: var(--shadow-md);
    }

    .solution-box h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .solution-box p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

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

    .step-item {
      background: #ffffff;
      padding: 28px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      text-align: center;
      position: relative;
    }

    .step-num {
      width: 44px;
      height: 44px;
      background: var(--accent-light);
      color: var(--primary-color);
      border: 2px solid var(--accent-mint);
      border-radius: var(--radius-full);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .step-item h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

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

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

    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .case-image-wrap {
      width: 100%;
      background: #f1f5f9;
      position: relative;
      aspect-ratio: 16 / 9;
      overflow: hidden;
    }

    .case-image-wrap.square {
      aspect-ratio: 1 / 1;
    }

    .case-image-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

    .case-card:hover .case-image-wrap img {
      transform: scale(1.03);
    }

    .case-content {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .case-content h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .case-content p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
    }

    .case-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.8125rem;
      color: var(--text-soft);
      border-top: 1px solid var(--border-subtle);
      padding-top: 12px;
    }

    /* 宣传图展位 */
    .banner-promo {
      margin-top: 36px;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      background: #ffffff;
      text-align: center;
    }

    .banner-promo img {
      width: 100%;
      height: auto;
      max-height: 380px;
      object-fit: cover;
      display: block;
    }

    /* 对比评测表格 */
    .compare-section {
      background: linear-gradient(180deg, #ffffff 0%, var(--accent-pale) 100%);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .score-banner {
      background: #ffffff;
      border: 2px solid var(--accent-mint);
      border-radius: var(--radius-lg);
      padding: 24px 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 32px;
      box-shadow: var(--shadow-md);
      flex-wrap: wrap;
      gap: 16px;
    }

    .score-left h3 {
      font-size: 1.35rem;
      color: var(--text-main);
      font-weight: 700;
    }

    .score-left p {
      color: var(--text-muted);
      font-size: 0.9375rem;
    }

    .score-right {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .stars {
      color: #f59e0b;
      font-size: 1.25rem;
      letter-spacing: 2px;
    }

    .score-val {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--primary-color);
    }

    .score-max {
      font-size: 1rem;
      color: var(--text-soft);
      font-weight: 500;
    }

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

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.9375rem;
      min-width: 680px;
    }

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

    .compare-table th {
      background: var(--accent-pale);
      color: var(--text-main);
      font-weight: 700;
    }

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

    .compare-table td.highlight {
      background-color: rgba(236, 253, 245, 0.4);
      color: var(--primary-color);
      font-weight: 600;
    }

    /* 代理加盟 & 收益模型 */
    .agent-card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .agent-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .agent-card.featured {
      border: 2px solid var(--accent-mint);
      background: linear-gradient(180deg, #ffffff 0%, var(--accent-pale) 100%);
      transform: scale(1.02);
      box-shadow: var(--shadow-lg);
    }

    .agent-card h4 {
      font-size: 1.3rem;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .agent-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
    }

    .agent-price {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 20px;
    }

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

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

    .testimonial-body {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      font-style: italic;
    }

    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .avatar-placeholder {
      width: 42px;
      height: 42px;
      border-radius: var(--radius-full);
      background: var(--accent-light);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }

    .author-info h5 {
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .author-info span {
      font-size: 0.8rem;
      color: var(--text-soft);
    }

    /* 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: 1fr 1fr;
      gap: 20px;
    }

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

    .form-group.full-width {
      grid-column: span 2;
    }

    .form-group label {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.9375rem;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      outline: none;
      background-color: #f8fafc;
      transition: all 0.2s ease;
      font-family: inherit;
    }

    .form-control:focus {
      background-color: #ffffff;
      border-color: var(--accent-mint);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
    }

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

    /* 常见问题 FAQ */
    .faq-accordion {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.2s ease;
    }

    .faq-item.active {
      border-color: var(--accent-mint);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      padding: 18px 24px;
      text-align: left;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.25rem;
      color: var(--primary-color);
      transition: transform 0.25s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.9375rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 500px;
      padding-bottom: 18px;
    }

    /* 文章与资讯 */
    .articles-container {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }

    .article-links-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 16px;
    }

    .article-link-item {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 12px 16px;
      background: var(--bg-page);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-subtle);
      font-size: 0.9rem;
      color: var(--text-muted);
      transition: all 0.2s ease;
    }

    .article-link-item:hover {
      border-color: var(--accent-mint);
      color: var(--primary-color);
      background: var(--accent-pale);
    }

    /* 联系我们与客服渠道 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
    }

    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

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

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

    .contact-info-item div h5 {
      font-size: 1rem;
      color: var(--text-main);
      margin-bottom: 2px;
    }

    .contact-info-item div p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    .qr-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      text-align: center;
      box-shadow: var(--shadow-md);
    }

    .qr-card img {
      width: 160px;
      height: 160px;
      object-fit: contain;
      margin: 0 auto 16px auto;
      display: block;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      padding: 6px;
    }

    .qr-card p {
      font-size: 0.875rem;
      color: var(--text-soft);
    }

    /* 友情链接与页脚 */
    .site-footer {
      background-color: #064e3b;
      color: #ecfdf5;
      padding-top: 56px;
      padding-bottom: 32px;
      border-top: 1px solid #047857;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 1.05rem;
      color: #ffffff;
      margin-bottom: 18px;
      font-weight: 700;
    }

    .footer-col p {
      font-size: 0.875rem;
      color: #a7f3d0;
      line-height: 1.6;
      margin-bottom: 12px;
    }

    .footer-links-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links-list a {
      color: #a7f3d0;
      font-size: 0.875rem;
    }

    .footer-links-list a:hover {
      color: #ffffff;
      text-decoration: underline;
    }

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

    .friend-links-wrap a {
      display: inline-block;
      padding: 4px 10px;
      background: rgba(255, 255, 255, 0.08);
      color: #d1fae5;
      font-size: 0.8125rem;
      border-radius: var(--radius-sm);
    }

    .friend-links-wrap a:hover {
      background: rgba(255, 255, 255, 0.2);
      color: #ffffff;
    }

    .footer-bottom {
      border-top: 1px solid rgba(209, 250, 229, 0.2);
      padding-top: 24px;
      text-align: center;
      font-size: 0.8125rem;
      color: #6ee7b7;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    .ai-page-home-link {
      color: #ffffff;
      font-weight: 600;
    }

    /* 悬浮客服挂件 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      background: var(--primary-color);
      color: #ffffff;
      border-radius: var(--radius-full);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-lg);
      cursor: pointer;
      border: none;
      font-size: 0.875rem;
      font-weight: bold;
      transition: all 0.2s ease;
    }

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

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .services-grid, .cases-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .solution-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2rem;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .intro-grid, .contact-grid {
        grid-template-columns: 1fr;
      }
      .services-grid, .cases-grid, .testimonials-grid, .agent-card-grid {
        grid-template-columns: 1fr;
      }
      .solution-grid, .process-steps {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .score-banner {
        flex-direction: column;
        align-items: flex-start;
      }
      .article-links-list {
        grid-template-columns: 1fr;
      }
    }