:root {
      --primary-red: #c91818;
      --primary-red-hover: #a81212;
      --primary-red-light: #fff0f0;
      --primary-red-border: #ffd4d4;
      --accent-gold: #d48806;
      --text-main: #1f1f23;
      --text-muted: #595961;
      --text-light: #8c8c96;
      --bg-base: #fcf9f9;
      --bg-card: #ffffff;
      --border-color: #f0d5d5;
      --box-shadow: 0 4px 18px rgba(180, 20, 20, 0.06);
      --box-shadow-hover: 0 8px 24px rgba(180, 20, 20, 0.12);
      --container-max: 1200px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

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

    /* 统一规范的主容器 */
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    header.site-header {
      width: 100%;
      background: rgba(255, 255, 255, 0.98);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1000;
      backdrop-filter: blur(10px);
    }

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

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

    .brand-box .ai-page-logo {
      height: 40px;
      max-width: 100%;
      object-fit: contain;
    }

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

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

    .nav-links a {
      padding: 8px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      position: relative;
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 6px;
      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-red);
      color: #ffffff !important;
      border-color: var(--primary-red);
      box-shadow: 0 4px 12px rgba(201, 24, 24, 0.25);
    }

    .btn-primary:hover {
      background-color: var(--primary-red-hover);
      border-color: var(--primary-red-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(201, 24, 24, 0.35);
    }

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

    .btn-outline:hover {
      background: var(--primary-red-light);
      transform: translateY(-2px);
    }

    .btn-sm {
      padding: 6px 14px;
      font-size: 13px;
    }

    .btn-lg {
      padding: 14px 32px;
      font-size: 16px;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--primary-red);
    }

    /* 主体区域 */
    main {
      width: 100%;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    section {
      width: 100%;
      padding: 70px 0;
    }

    .section-header {
      text-align: center;
      margin-bottom: 45px;
    }

    .section-subtitle {
      color: var(--primary-red);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      margin-bottom: 8px;
      display: inline-block;
      background: var(--primary-red-light);
      padding: 4px 12px;
      border-radius: 20px;
    }

    .section-title {
      font-size: 30px;
      color: var(--text-main);
      margin-bottom: 12px;
      font-weight: 700;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
    }

    /* Hero 首屏 - 纯代码视觉，无图片 */
    .hero-section {
      background: radial-gradient(circle at 50% 10%, #ffe9e9 0%, #ffffff 80%);
      padding: 85px 0 60px 0;
      border-bottom: 1px solid var(--border-color);
      width: 100%;
    }

    .hero-container {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid var(--primary-red-border);
      color: var(--primary-red);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: 0 2px 8px rgba(201, 24, 24, 0.08);
    }

    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      max-width: 900px;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      color: var(--primary-red);
    }

    .hero-lead {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 760px;
      margin-bottom: 35px;
      line-height: 1.6;
    }

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

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      width: 100%;
      margin-top: 10px;
    }

    .metric-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 20px 16px;
      box-shadow: var(--box-shadow);
      text-align: center;
      transition: transform 0.25s ease;
    }

    .metric-card:hover {
      transform: translateY(-4px);
    }

    .metric-num {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary-red);
      margin-bottom: 4px;
      font-family: Arial, sans-serif;
    }

    .metric-name {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 平台支持的大模型矩阵标签云 */
    .model-strip {
      padding: 24px 0;
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      width: 100%;
    }

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

    .tag-chip {
      background: var(--bg-base);
      border: 1px solid var(--border-color);
      color: var(--text-main);
      padding: 4px 12px;
      border-radius: 4px;
      font-size: 13px;
      font-weight: 500;
      transition: all 0.2s ease;
    }

    .tag-chip:hover {
      background: var(--primary-red);
      color: #ffffff;
      border-color: var(--primary-red);
      transform: scale(1.05);
    }

    /* 平台介绍板块 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }

    .intro-text-block h3 {
      font-size: 24px;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.4;
    }

    .intro-text-block p {
      color: var(--text-muted);
      font-size: 15px;
      margin-bottom: 20px;
    }

    .feature-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }

    .feature-list li {
      font-size: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--text-main);
      font-weight: 600;
    }

    .feature-list li::before {
      content: "✓";
      color: var(--primary-red);
      background: var(--primary-red-light);
      border-radius: 50%;
      width: 20px;
      height: 20px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
    }

    .intro-visual-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--box-shadow);
    }

    .intro-card-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .inner-stat-card {
      background: var(--bg-base);
      border: 1px solid var(--primary-red-border);
      border-radius: 8px;
      padding: 16px;
    }

    .inner-stat-card h4 {
      font-size: 16px;
      color: var(--primary-red);
      margin-bottom: 6px;
    }

    .inner-stat-card p {
      font-size: 13px;
      color: var(--text-muted);
      margin: 0;
    }

    /* 服务与核心能力网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 24px;
      box-shadow: var(--box-shadow);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }

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

    .service-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .service-title::before {
      content: "";
      width: 4px;
      height: 16px;
      background: var(--primary-red);
      border-radius: 2px;
      display: inline-block;
    }

    .service-body {
      font-size: 13.5px;
      color: var(--text-muted);
      flex-grow: 1;
      line-height: 1.6;
    }

    /* 一站式创作亮点与多模型协作 */
    .highlight-card-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .highlight-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-top: 4px solid var(--primary-red);
      border-radius: 8px;
      padding: 28px;
      box-shadow: var(--box-shadow);
    }

    .highlight-card h3 {
      font-size: 20px;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .highlight-card p {
      color: var(--text-muted);
      font-size: 14px;
      margin-bottom: 18px;
    }

    .badge-pill-group {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .badge-pill {
      background: var(--primary-red-light);
      color: var(--primary-red);
      font-size: 12px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 4px;
    }

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

    .sol-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 20px;
      transition: all 0.25s ease;
    }

    .sol-card:hover {
      border-color: var(--primary-red);
      box-shadow: var(--box-shadow);
      transform: translateY(-3px);
    }

    .sol-card h4 {
      font-size: 16px;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .sol-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 服务网络与支撑 */
    .network-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 32px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      box-shadow: var(--box-shadow);
    }

    .network-item {
      text-align: center;
      padding: 16px;
      border-right: 1px dashed var(--border-color);
    }

    .network-item:last-child {
      border-right: none;
    }

    .network-item h4 {
      font-size: 17px;
      color: var(--primary-red);
      margin-bottom: 8px;
    }

    .network-item p {
      font-size: 13px;
      color: var(--text-muted);
    }

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

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 24px;
      position: relative;
      box-shadow: var(--box-shadow);
    }

    .step-badge {
      width: 32px;
      height: 32px;
      background: var(--primary-red);
      color: #ffffff;
      font-weight: 700;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      margin-bottom: 14px;
    }

    .step-card h4 {
      font-size: 16px;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .step-card p {
      font-size: 13px;
      color: var(--text-muted);
    }

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

    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      overflow: hidden;
      box-shadow: var(--box-shadow);
      display: flex;
      flex-direction: column;
    }

    .case-media-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #f0f0f0;
      overflow: hidden;
    }

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

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

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

    .case-tag {
      font-size: 12px;
      color: var(--primary-red);
      font-weight: 600;
      margin-bottom: 6px;
    }

    .case-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .case-desc {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 14px;
      flex-grow: 1;
    }

    .case-stat {
      font-size: 12px;
      color: var(--text-main);
      background: var(--bg-base);
      padding: 6px 10px;
      border-radius: 4px;
      font-weight: 600;
    }

    /* 对比评测 板块 */
    .benchmark-section {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .score-summary-card {
      background: radial-gradient(circle at center, #fff6f6 0%, #fff 100%);
      border: 1px solid var(--primary-red-border);
      border-radius: 12px;
      padding: 28px;
      text-align: center;
      margin-bottom: 30px;
      box-shadow: var(--box-shadow);
    }

    .score-number {
      font-size: 54px;
      font-weight: 900;
      color: var(--primary-red);
      line-height: 1;
      margin-bottom: 8px;
      font-family: Arial, sans-serif;
    }

    .score-stars {
      color: #f5a623;
      font-size: 20px;
      margin-bottom: 10px;
    }

    .score-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 600px;
      margin: 0 auto;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      box-shadow: var(--box-shadow);
      background: #ffffff;
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 720px;
    }

    .eval-table th,
    .eval-table td {
      padding: 16px 20px;
      font-size: 14px;
      border-bottom: 1px solid var(--border-color);
    }

    .eval-table th {
      background: #fdf5f5;
      font-weight: 700;
      color: var(--text-main);
    }

    .eval-table tr:hover td {
      background: #fffafa;
    }

    .eval-table .highlight-col {
      background: rgba(201, 24, 24, 0.03);
      font-weight: 600;
      color: var(--primary-red);
    }

    /* 需求匹配与表单 */
    .match-form-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 36px;
      box-shadow: var(--box-shadow);
      max-width: 800px;
      margin: 0 auto;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

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

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

    .form-group label {
      font-size: 13.5px;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid #d9d9df;
      border-radius: 6px;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s ease;
      background: #ffffff;
    }

    .form-control:focus {
      border-color: var(--primary-red);
      box-shadow: 0 0 0 3px rgba(201, 24, 24, 0.1);
    }

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

    /* 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: 10px;
      padding: 28px;
      box-shadow: var(--box-shadow);
      display: flex;
      flex-direction: column;
      text-align: center;
      transition: all 0.25s ease;
    }

    .pricing-card.featured {
      border: 2px solid var(--primary-red);
      position: relative;
      transform: translateY(-4px);
    }

    .pricing-card-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-red);
      color: #ffffff;
      font-size: 11px;
      padding: 2px 12px;
      border-radius: 20px;
      font-weight: 700;
    }

    .pricing-card h4 {
      font-size: 18px;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .pricing-price {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary-red);
      margin-bottom: 16px;
      font-family: Arial, sans-serif;
    }

    .pricing-features {
      list-style: none;
      margin-bottom: 24px;
      flex-grow: 1;
      text-align: left;
    }

    .pricing-features li {
      font-size: 13.5px;
      color: var(--text-muted);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .pricing-features li::before {
      content: "•";
      color: var(--primary-red);
      font-size: 18px;
    }

    /* 客户评论卡片 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 22px;
      box-shadow: var(--box-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      position: relative;
    }

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

    .user-avatar-circle {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-red-light);
      color: var(--primary-red);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
    }

    .user-meta h5 {
      font-size: 14px;
      color: var(--text-main);
      font-weight: 700;
    }

    .user-meta p {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 常见问题 FAQ 折叠面板 */
    .faq-accordion {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 6px;
      overflow: hidden;
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
    }

    .faq-trigger {
      width: 100%;
      padding: 18px 20px;
      text-align: left;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      background: none;
      border: none;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: background 0.2s ease;
    }

    .faq-trigger:hover {
      background: var(--primary-red-light);
    }

    .faq-icon {
      font-size: 18px;
      color: var(--primary-red);
      transition: transform 0.25s ease;
    }

    .faq-content {
      padding: 0 20px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .faq-item.active .faq-content {
      max-height: 200px;
      padding: 0 20px 18px 20px;
    }

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

    /* AI百科与行业资讯 */
    .info-dual-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }

    .info-pane {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 26px;
      box-shadow: var(--box-shadow);
    }

    .info-pane h3 {
      font-size: 18px;
      margin-bottom: 16px;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .info-pane h3::before {
      content: "";
      width: 4px;
      height: 16px;
      background: var(--primary-red);
      display: inline-block;
    }

    .article-simple-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .article-simple-list li a {
      font-size: 14px;
      color: var(--text-muted);
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 8px 0;
      border-bottom: 1px dashed var(--border-color);
    }

    .article-simple-list li a:hover {
      color: var(--primary-red);
      transform: translateX(4px);
    }

    /* 加盟代理与推广躺赚 */
    .agent-banner {
      background: linear-gradient(135deg, #fff5f5 0%, #ffe8e8 100%);
      border: 1px solid var(--primary-red-border);
      border-radius: 12px;
      padding: 40px;
      text-align: center;
      box-shadow: var(--box-shadow);
    }

    .agent-banner h3 {
      font-size: 26px;
      color: var(--text-main);
      margin-bottom: 12px;
      font-weight: 700;
    }

    .agent-banner p {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto 24px;
    }

    /* 联系我们 */
    .contact-card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
      margin-bottom: 30px;
    }

    .contact-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 24px;
      text-align: center;
      box-shadow: var(--box-shadow);
    }

    .contact-item h4 {
      font-size: 16px;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .contact-item p {
      font-size: 14px;
      color: var(--text-muted);
    }

    .qr-container {
      display: flex;
      justify-content: center;
      gap: 40px;
      margin-top: 20px;
      flex-wrap: wrap;
    }

    .qr-box {
      text-align: center;
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 16px;
      border-radius: 8px;
      box-shadow: var(--box-shadow);
    }

    .qr-box img {
      width: 130px;
      height: 130px;
      object-fit: cover;
      display: block;
      margin-bottom: 8px;
      border: 1px solid #eee;
    }

    .qr-box span {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
    }

    /* 底部通用区域 */
    footer.site-footer {
      width: 100%;
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 45px 0 25px 0;
      color: var(--text-muted);
      font-size: 13px;
    }

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

    .footer-col h4 {
      font-size: 15px;
      color: var(--text-main);
      margin-bottom: 14px;
      font-weight: 700;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

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

    .friend-links-area {
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
      margin-bottom: 20px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      font-size: 13px;
    }

    .friend-links-area a {
      color: var(--text-muted);
      margin-right: 8px;
    }

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

    .copyright-bar {
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: var(--text-light);
    }

    /* 浮动客服入口 */
    .float-service-widget {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary-red);
      font-size: 18px;
      font-weight: 700;
      transition: all 0.25s ease;
    }

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

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 32px;
      }
      .services-grid,
      .solutions-grid,
      .cases-grid,
      .token-pricing-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .network-container {
        grid-template-columns: repeat(2, 1fr);
      }
      .network-item {
        border-right: none;
        border-bottom: 1px dashed var(--border-color);
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .intro-grid {
        grid-template-columns: 1fr;
      }
      .info-dual-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-btn {
        display: block;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        flex-direction: column;
        align-items: flex-start;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-menu.show {
        display: flex;
      }
      .nav-links {
        flex-direction: column;
        width: 100%;
        align-items: flex-start;
      }
      .nav-links a {
        padding: 10px 0;
        width: 100%;
      }
      .nav-actions {
        margin-top: 15px;
        width: 100%;
      }
      .nav-actions .btn {
        width: 100%;
      }
      .hero-title {
        font-size: 26px;
      }
      .hero-lead {
        font-size: 15px;
      }
      .services-grid,
      .solutions-grid,
      .cases-grid,
      .token-pricing-grid,
      .reviews-grid,
      .highlight-card-row {
        grid-template-columns: 1fr;
      }
      .hero-metrics {
        grid-template-columns: 1fr;
      }
      .network-container {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-grid .full-span {
        grid-column: span 1;
      }
      .contact-card-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }