:root {
      --primary: #2563eb;
      --primary-hover: #1d4ed8;
      --primary-light: #eff6ff;
      --accent: #0ea5e9;
      --accent-warm: #f97316;
      --success: #10b981;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-soft: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #3b82f6;
      --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: 12px;
      --container-width: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
    }

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
    }

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

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

    .brand-logo-container {
      max-height: 42px;
      display: flex;
      align-items: center;
    }

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

    .brand-name {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.02em;
    }

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

    .nav-links li a {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 14px;
      border-radius: 6px;
      display: inline-block;
    }

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

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

    .btn-portal {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary);
      color: #ffffff;
      padding: 9px 18px;
      border-radius: 8px;
      font-size: 0.875rem;
      font-weight: 600;
      box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
    }

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

    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: 1px solid var(--border-color);
      padding: 8px;
      border-radius: 6px;
      cursor: pointer;
      font-size: 1.2rem;
      color: var(--text-main);
    }

    /* 首屏 Hero（无图纯净高亮鲜活风） */
    .hero-section {
      background: linear-gradient(135deg, #ffffff 0%, #eff6ff 50%, #f0fdf4 100%);
      border-bottom: 1px solid var(--border-color);
      padding: 80px 0 70px;
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid #bfdbfe;
      padding: 6px 16px;
      border-radius: 9999px;
      color: var(--primary);
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .hero-title {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      max-width: 960px;
      margin: 0 auto 20px;
      letter-spacing: -0.03em;
    }

    .hero-lead {
      font-size: 1.125rem;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px;
    }

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

    .btn-hero-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--primary);
      color: #ffffff;
      padding: 14px 32px;
      border-radius: 10px;
      font-size: 1.05rem;
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
      transition: all 0.2s ease;
    }

    .btn-hero-primary:hover {
      background: var(--primary-hover);
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
    }

    .btn-hero-outline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      padding: 14px 28px;
      border-radius: 10px;
      font-size: 1.05rem;
      font-weight: 600;
      box-shadow: var(--shadow-sm);
    }

    .btn-hero-outline:hover {
      background: var(--bg-main);
      border-color: #cbd5e1;
    }

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1060px;
      margin: 0 auto;
    }

    .metric-card {
      background: #ffffff;
      padding: 24px 20px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: left;
    }

    .metric-num {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .metric-label {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .metric-desc {
      font-size: 0.775rem;
      color: var(--text-soft);
      line-height: 1.4;
    }

    /* 区域通则 */
    .section-wrap {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
      background-color: var(--bg-card);
    }

    .section-wrap.alt-bg {
      background-color: var(--bg-main);
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 12px;
      border-radius: 9999px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.125rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
      letter-spacing: -0.02em;
    }

    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 平台核心模型支撑条 */
    .model-ticker {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }

    .model-chip {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: 8px;
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--text-muted);
      box-shadow: 0 1px 2px rgba(0,0,0,0.02);
      transition: all 0.2s ease;
    }

    .model-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }

    /* 平台介绍两栏 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .intro-text-box h3 {
      font-size: 1.75rem;
      font-weight: 700;
      margin-bottom: 18px;
      color: var(--text-main);
    }

    .intro-text-box p {
      font-size: 1rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .intro-features {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }

    .intro-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.9375rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .check-icon {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: #dcfce7;
      color: #15803d;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      flex-shrink: 0;
      margin-top: 2px;
    }

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

    .preview-stat-row {
      display: flex;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 16px;
      margin-bottom: 16px;
    }

    .preview-stat-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
      margin-bottom: 0;
    }

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

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #93c5fd;
    }

    .service-card-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--accent);
      background: #f0f9ff;
      display: inline-block;
      padding: 4px 10px;
      border-radius: 6px;
      margin-bottom: 14px;
      align-self: flex-start;
    }

    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 0.90rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 16px;
    }

    .service-action-link {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .service-action-link:hover {
      text-decoration: underline;
    }

    /* 流程步骤 */
    .steps-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .step-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px 22px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-badge {
      width: 38px;
      height: 38px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.125rem;
      margin-bottom: 18px;
    }

    .step-item h3 {
      font-size: 1.125rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

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

    /* 案例中心展示 */
    .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);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .case-img-wrap {
      width: 100%;
      height: 220px;
      background: #f1f5f9;
      overflow: hidden;
    }

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

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

    .case-body {
      padding: 22px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .case-category {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 6px;
    }

    .case-body h3 {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .case-body p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 14px;
      flex-grow: 1;
    }

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

    /* 对比评测表格与卡片 */
    .rating-banner {
      background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
      color: #ffffff;
      padding: 32px;
      border-radius: var(--radius);
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .rating-content h3 {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 6px;
    }

    .rating-stars {
      color: #facc15;
      font-size: 1.25rem;
      letter-spacing: 2px;
    }

    .rating-score-box {
      background: rgba(255, 255, 255, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.25);
      padding: 16px 28px;
      border-radius: 10px;
      text-align: center;
    }

    .score-large {
      font-size: 2.25rem;
      font-weight: 900;
      line-height: 1;
    }

    .score-total {
      font-size: 0.875rem;
      opacity: 0.85;
      margin-top: 4px;
    }

    .comparison-table-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

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

    .comparison-table th,
    .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.9375rem;
    }

    .comparison-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 700;
    }

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

    .comparison-table .highlight-col {
      background: #eff6ff;
      color: var(--primary);
      font-weight: 700;
    }

    /* 价格与 Token 比价 */
    .token-pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .pricing-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 32px 26px;
      box-shadow: var(--shadow-sm);
      position: relative;
      display: flex;
      flex-direction: column;
    }

    .pricing-card.popular {
      border-color: var(--primary);
      box-shadow: var(--shadow-lg);
      transform: scale(1.02);
    }

    .popular-tag {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--accent-warm);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 9999px;
    }

    .pricing-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .pricing-price {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--primary);
      margin: 16px 0 6px;
      line-height: 1;
    }

    .pricing-price span {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-soft);
    }

    .pricing-features {
      list-style: none;
      margin: 24px 0;
      flex-grow: 1;
    }

    .pricing-features li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .btn-pricing {
      display: block;
      width: 100%;
      text-align: center;
      padding: 12px 0;
      border-radius: 8px;
      font-weight: 600;
      font-size: 0.9375rem;
      background: var(--primary);
      color: #ffffff;
    }

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

    /* 需求匹配表单 & 联系 */
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .contact-info-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .contact-info-panel h3 {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--text-main);
    }

    .contact-info-panel p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    .contact-items {
      list-style: none;
      margin-bottom: 28px;
    }

    .contact-items li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 16px;
      font-size: 0.9375rem;
      color: var(--text-muted);
    }

    .contact-items strong {
      color: var(--text-main);
      min-width: 80px;
    }

    .qrcode-box {
      display: flex;
      align-items: center;
      gap: 20px;
      background: var(--bg-main);
      padding: 18px;
      border-radius: 10px;
      border: 1px solid var(--border-color);
    }

    .qrcode-box img {
      width: 96px;
      height: 96px;
      border-radius: 6px;
      object-fit: cover;
    }

    .form-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-group label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      font-size: 0.9375rem;
      color: var(--text-main);
      background-color: #ffffff;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--border-focus);
      box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
    }

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

    .btn-submit {
      width: 100%;
      background: var(--primary);
      color: #ffffff;
      padding: 13px;
      border: none;
      border-radius: 8px;
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
    }

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

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

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

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

    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #e0e7ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }

    .reviewer-meta h4 {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .reviewer-meta span {
      font-size: 0.8125rem;
      color: var(--text-soft);
    }

    .review-body {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .review-stars {
      color: #f59e0b;
      font-size: 0.875rem;
    }

    /* 常见问题 FAQ 折叠 */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
    }

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

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 22px;
      background: transparent;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.25rem;
      color: var(--text-soft);
      transition: transform 0.2s ease;
    }

    .faq-answer {
      display: none;
      padding: 0 22px 18px;
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.6;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .faq-item.open .faq-answer {
      display: block;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }

    /* 文章与资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .news-date {
      font-size: 0.775rem;
      color: var(--text-soft);
      margin-bottom: 8px;
    }

    .news-card h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .news-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .news-link {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
    }

    .article-tags-wrap {
      margin-top: 36px;
      padding: 20px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
    }

    .article-links-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 12px;
    }

    .article-chip {
      background: var(--bg-main);
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    .article-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    /* 宣传图画廊展示区 */
    .banner-gallery {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 30px;
    }

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

    .ai-page-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    /* 加盟代理模块 */
    .agent-box {
      background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 50%, #eff6ff 100%);
      border: 1px solid #bbf7d0;
      border-radius: var(--radius);
      padding: 44px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      flex-wrap: wrap;
    }

    .agent-info h3 {
      font-size: 1.65rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .agent-info p {
      font-size: 0.95rem;
      color: var(--text-muted);
      max-width: 650px;
    }

    .btn-agent {
      background: var(--success);
      color: #ffffff;
      padding: 14px 28px;
      border-radius: 8px;
      font-weight: 700;
      font-size: 1rem;
      box-shadow: 0 4px 10px rgba(16, 185, 129, 0.25);
    }

    .btn-agent:hover {
      background: #059669;
      color: #ffffff;
    }

    /* 友情链接与主页脚 */
    .friendly-links-section {
      padding: 30px 0;
      border-bottom: 1px solid var(--border-color);
      background-color: #ffffff;
    }

    .friendly-title {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--text-soft);
      margin-bottom: 12px;
    }

    .friendly-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friendly-links-wrap a {
      font-size: 0.8125rem;
      color: var(--text-muted);
      background: var(--bg-main);
      padding: 6px 12px;
      border-radius: 6px;
      border: 1px solid var(--border-color);
    }

    .friendly-links-wrap a:hover {
      color: var(--primary);
      border-color: var(--primary);
    }

    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 48px 0 32px;
      color: var(--text-muted);
    }

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

    .footer-col h4 {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 18px;
    }

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

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

    .footer-col ul li a {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

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

    .footer-brand p {
      font-size: 0.875rem;
      line-height: 1.6;
      margin: 14px 0;
      color: var(--text-muted);
    }

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8125rem;
      color: var(--text-soft);
    }

    /* 浮动客服入口 */
    .float-dock {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .dock-btn {
      width: 48px;
      height: 48px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      color: var(--primary);
      cursor: pointer;
      position: relative;
      transition: all 0.2s ease;
    }

    .dock-btn:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-lg);
      background: var(--primary);
      color: #ffffff;
    }

    .dock-qr-popup {
      position: absolute;
      right: 58px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: 8px;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      display: none;
      width: 140px;
      text-align: center;
    }

    .dock-btn:hover .dock-qr-popup {
      display: block;
    }

    .dock-qr-popup img {
      width: 100%;
      height: auto;
      border-radius: 4px;
    }

    .dock-qr-popup span {
      display: block;
      font-size: 0.75rem;
      color: var(--text-main);
      margin-top: 4px;
      font-weight: 600;
    }

    /* 移动适配 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.125rem;
      }
      .hero-metrics,
      .services-grid,
      .steps-container,
      .case-grid,
      .token-pricing-grid,
      .reviews-grid,
      .news-grid,
      .banner-gallery,
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .intro-grid,
      .contact-container {
        grid-template-columns: 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;
        align-items: stretch;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        padding: 12px 20px;
      }
      .nav-links.show {
        display: flex;
      }
      .hero-metrics,
      .services-grid,
      .steps-container,
      .case-grid,
      .token-pricing-grid,
      .reviews-grid,
      .news-grid,
      .banner-gallery,
      .footer-grid,
      .intro-features {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 1.75rem;
      }
      .rating-banner {
        flex-direction: column;
        text-align: center;
      }
      .agent-box {
        flex-direction: column;
        text-align: center;
      }
    }