:root {
      --primary: #d9232e;
      --primary-dark: #b81c25;
      --primary-light: #fff1f0;
      --primary-gradient: linear-gradient(135deg, #e62e39 0%, #c41823 100%);
      --accent: #ff4d4f;
      --text-main: #1f2329;
      --text-muted: #5c6470;
      --text-light: #8f959e;
      --bg-page: #faf8f8;
      --bg-card: #ffffff;
      --border-color: #f0d5d7;
      --border-subtle: #f5e8e8;
      --shadow-sm: 0 2px 8px rgba(217, 35, 46, 0.05);
      --shadow-md: 0 8px 24px rgba(217, 35, 46, 0.08);
      --shadow-lg: 0 16px 36px rgba(217, 35, 46, 0.12);
      --container-width: 1200px;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      line-height: 1.6;
      color: var(--text-main);
      background-color: var(--bg-page);
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

    ul, ol {
      list-style: none;
    }

    .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);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }

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

    .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
      object-fit: contain;
    }

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

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

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

    .nav-links li a {
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
      display: inline-block;
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      text-align: center;
    }

    .btn-primary {
      background: var(--primary-gradient);
      color: #fff;
      box-shadow: 0 4px 12px rgba(217, 35, 46, 0.25);
    }

    .btn-primary:hover {
      box-shadow: 0 6px 16px rgba(217, 35, 46, 0.35);
      transform: translateY(-1px);
    }

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

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

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    /* 区域通用样式 */
    section {
      padding: 70px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      background: var(--primary-light);
      border: 1px solid var(--border-color);
      border-radius: 20px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }

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

    /* 首屏 Hero */
    .hero-section {
      padding: 90px 0 80px 0;
      background: radial-gradient(circle at 50% 20%, #ffe8ea 0%, #fff7f7 50%, var(--bg-page) 100%);
      text-align: center;
      border-bottom: 1px solid var(--border-subtle);
    }

    .hero-content {
      max-width: 860px;
      margin: 0 auto;
    }

    .hero-badge-wrap {
      margin-bottom: 20px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 18px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary-dark);
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 30px;
      box-shadow: var(--shadow-sm);
    }

    .hero-badge span.pulse-dot {
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 0 3px rgba(217, 35, 46, 0.2);
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 24px;
      letter-spacing: -1px;
    }

    .hero-title .highlight {
      color: var(--primary);
      background: linear-gradient(180deg, transparent 65%, #ffd2d5 65%);
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
    }

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

    .hero-cta .btn {
      padding: 13px 32px;
      font-size: 1.05rem;
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 30px;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .stat-item h3 {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }

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

    /* 模型滚动标签云 */
    .model-tag-cloud {
      margin-top: 40px;
      text-align: center;
    }

    .model-tag-cloud-title {
      font-size: 0.85rem;
      color: var(--text-light);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

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

    .model-tag {
      padding: 5px 14px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 20px;
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 平台介绍 */
    .platform-intro-section {
      background: #ffffff;
      border-bottom: 1px solid var(--border-subtle);
    }

    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .intro-text-box h2 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 20px;
      line-height: 1.35;
    }

    .intro-text-box p {
      color: var(--text-muted);
      margin-bottom: 16px;
      font-size: 1rem;
    }

    .intro-feature-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }

    .feature-pill {
      background: var(--primary-light);
      border: 1px solid var(--border-color);
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--primary-dark);
    }

    .feature-pill-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
    }

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

    .preview-header {
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 16px;
      margin-bottom: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .preview-header h4 {
      font-size: 1.1rem;
      color: var(--primary);
    }

    .preview-badge {
      background: var(--primary);
      color: #fff;
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: 12px;
    }

    .preview-body ul li {
      padding: 10px 0;
      border-bottom: 1px dashed #eddcd9;
      font-size: 0.95rem;
      display: flex;
      justify-content: space-between;
    }

    .preview-body ul li:last-child {
      border-bottom: none;
    }

    .preview-body span.val {
      font-weight: 700;
      color: var(--primary-dark);
    }

    /* 服务能力卡片与一站式制作 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

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

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 18px;
      border: 1px solid var(--border-color);
    }

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

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .card-footer-tag {
      margin-top: 16px;
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 600;
      display: inline-block;
    }

    /* 行业方案展示 */
    .solution-section {
      background: #ffffff;
    }

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

    .solution-box {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      background: #fffdfd;
      transition: all 0.25s ease;
    }

    .solution-box:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    .solution-box h4 {
      font-size: 1.15rem;
      color: var(--primary);
      margin-bottom: 10px;
    }

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

    /* 服务网络 */
    .network-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }

    .network-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 16px;
    }

    .network-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }

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

    /* 标准流程步骤 */
    .steps-section {
      background: #ffffff;
    }

    .steps-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .step-item {
      background: #fff8f8;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
    }

    .step-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      margin-bottom: 14px;
      box-shadow: 0 4px 10px rgba(217, 35, 46, 0.3);
    }

    .step-item h4 {
      font-size: 1.15rem;
      margin-bottom: 8px;
    }

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

    /* 案例中心展示 */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
    }

    .case-gallery-col {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

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

    .case-img-box {
      width: 100%;
      background: #f7f1f1;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .case-img-box img {
      width: 100%;
      max-width: 100%;
      height: auto;
      display: block;
      transition: transform 0.3s ease;
    }

    .case-item-card:hover .case-img-box img {
      transform: scale(1.02);
    }

    .case-info {
      padding: 18px 20px;
    }

    .case-info h4 {
      font-size: 1.05rem;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .case-info p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .banner-strip-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 30px;
    }

    .banner-strip-item {
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: #fff;
    }

    .banner-strip-item img {
      width: 100%;
      height: auto;
      display: block;
    }

    /* 对比评测 板块 */
    .compare-section {
      background: linear-gradient(180deg, #ffffff 0%, #fff7f7 100%);
    }

    .score-badge-card {
      background: #ffffff;
      border: 2px solid var(--primary);
      border-radius: var(--radius-lg);
      padding: 24px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      box-shadow: var(--shadow-md);
    }

    .score-badge-left {
      display: flex;
      align-items: center;
      gap: 20px;
    }

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

    .score-stars {
      color: #ff9800;
      font-size: 1.25rem;
      margin-bottom: 4px;
    }

    .score-badge-right {
      display: flex;
      gap: 12px;
    }

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

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

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-subtle);
      font-size: 0.95rem;
    }

    .compare-table th {
      background: #fff0f1;
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table tr:hover td {
      background: #fffafb;
    }

    .compare-table .brand-col {
      color: var(--primary);
      font-weight: 700;
      background: #fff8f8;
    }

    .tag-yes {
      color: #108ee9;
      font-weight: 600;
    }

    .tag-best {
      color: var(--primary);
      font-weight: 700;
    }

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

    .token-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .token-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border-subtle);
    }

    .token-header h4 {
      font-size: 1.15rem;
      font-weight: 700;
    }

    .token-price {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary);
    }

    .token-price small {
      font-size: 0.85rem;
      font-weight: normal;
      color: var(--text-muted);
    }

    .token-list li {
      font-size: 0.88rem;
      padding: 6px 0;
      color: var(--text-muted);
      display: flex;
      justify-content: space-between;
    }

    /* 需求匹配 & 联系我们表单 */
    .contact-form-section {
      background: #ffffff;
    }

    .form-box-wrapper {
      max-width: 800px;
      margin: 0 auto;
      background: #fffefe;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

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

    .form-label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-control {
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      background: #fff;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s ease;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(217, 35, 46, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

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

    .review-content {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      position: relative;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-subtle);
      padding-top: 14px;
    }

    .user-avatar-circle {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
      border: 1px solid var(--border-color);
    }

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

    .user-info-text p {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* 加盟代理模块 */
    .partner-section {
      background: radial-gradient(circle at 50% 50%, #fff1f2 0%, #faf8f8 100%);
    }

    .partner-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: 3fr 2fr;
      gap: 30px;
      align-items: center;
    }

    .partner-features {
      list-style: none;
      margin: 20px 0;
    }

    .partner-features li {
      padding: 8px 0;
      font-size: 0.95rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .partner-qr-box {
      text-align: center;
      background: #fffbfb;
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
    }

    .partner-qr-img {
      max-width: 160px;
      height: auto;
      margin: 0 auto 12px auto;
      display: block;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
    }

    /* FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color 0.2s ease;
    }

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

    .faq-question {
      padding: 18px 24px;
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-toggle-icon {
      font-size: 1.2rem;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #fffdfd;
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.6;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 24px 18px 24px;
    }

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

    /* 行业资讯 & AI 百科 */
    .news-encyclopedia-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    .content-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }

    .content-box h3 {
      font-size: 1.25rem;
      margin-bottom: 18px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border-subtle);
      color: var(--primary);
    }

    .article-link-list li {
      padding: 10px 0;
      border-bottom: 1px dashed var(--border-subtle);
      font-size: 0.93rem;
      display: flex;
      justify-content: space-between;
    }

    .article-link-list li:last-child {
      border-bottom: none;
    }

    .article-link-list a:hover {
      color: var(--primary);
    }

    /* 底部通用区域 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 24px 0;
      color: var(--text-muted);
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .footer-col ul li {
      margin-bottom: 8px;
      font-size: 0.9rem;
    }

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

    .footer-qr-wrap {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .footer-qr-img {
      width: 80px;
      height: 80px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
    }

    .footer-friend-links {
      border-top: 1px solid var(--border-subtle);
      padding: 20px 0;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 14px;
      font-size: 0.88rem;
    }

    .footer-friend-links a {
      color: var(--text-muted);
    }

    .footer-friend-links a:hover {
      color: var(--primary);
    }

    .footer-bottom-bar {
      border-top: 1px solid var(--border-subtle);
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
      color: var(--text-light);
    }

    /* 浮动侧边客服组件 */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .kefu-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(217, 35, 46, 0.4);
      position: relative;
    }

    .kefu-popover {
      display: none;
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 16px;
      box-shadow: var(--shadow-lg);
      width: 200px;
      text-align: center;
    }

    .kefu-btn:hover .kefu-popover {
      display: block;
    }

    .back-top-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--text-muted);
      border: 1px solid var(--border-color);
      display: none;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: var(--shadow-sm);
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .services-grid,
      .token-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-container,
      .network-grid,
      .solution-tabs,
      .banner-strip-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
      .case-gallery-grid {
        grid-template-columns: 1fr;
      }
      .partner-card {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 20px;
        box-shadow: var(--shadow-md);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
        width: 100%;
      }
      .nav-actions {
        display: none;
      }
      .hero-title {
        font-size: 2rem;
      }
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
      .intro-grid,
      .news-encyclopedia-grid,
      .services-grid,
      .token-grid,
      .reviews-grid,
      .steps-container,
      .network-grid,
      .solution-tabs,
      .banner-strip-grid,
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom-bar {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
      .score-badge-card {
        flex-direction: column;
        text-align: center;
      }
      .score-badge-left {
        flex-direction: column;
      }
    }