:root {
      --primary-cyan: #00a896;
      --primary-dark-cyan: #028090;
      --deep-navy: #05668d;
      --accent-cyan: #00b4d8;
      --light-cyan-bg: #eef9fc;
      --white: #ffffff;
      --dark-text: #1d2d44;
      --muted-text: #5c6b73;
      --light-border: #e0f2f1;
      --card-shadow: 0 10px 30px rgba(2, 128, 144, 0.08);
      --hover-shadow: 0 15px 35px rgba(2, 128, 144, 0.15);
      --container-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--light-cyan-bg);
      color: var(--dark-text);
      line-height: 1.6;
    }

    .container {
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    header.site-header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid var(--light-border);
      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: 15px;
    }

    .ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }

    .ai-page-home-link {
      color: var(--primary-dark-cyan);
      text-decoration: none;
      font-weight: 600;
      font-size: 15px;
      padding: 6px 12px;
      border-radius: 4px;
      background-color: var(--light-cyan-bg);
      transition: all 0.2s;
    }
    .ai-page-home-link:hover {
      background-color: var(--primary-cyan);
      color: var(--white);
    }

    /* 约束要求：.nav-links的gap属性设置为0 */
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      color: var(--dark-text);
      text-decoration: none;
      font-size: 14px;
      font-weight: 500;
      padding: 8px 12px;
      transition: color 0.2s;
      white-space: nowrap;
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 6px;
      font-size: 14px;
      font-weight: 600;
      text-decoration: none;
      cursor: pointer;
      border: none;
      transition: all 0.3s ease;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary-cyan), var(--primary-dark-cyan));
      color: var(--white);
      box-shadow: 0 4px 12px rgba(0, 168, 150, 0.25);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(0, 168, 150, 0.35);
    }

    .btn-secondary {
      background-color: var(--white);
      color: var(--primary-dark-cyan);
      border: 1px solid var(--primary-cyan);
    }

    .btn-secondary:hover {
      background-color: var(--light-cyan-bg);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--dark-text);
      cursor: pointer;
    }

    /* 通用Section */
    section {
      padding: 80px 0;
    }

    .section-title-wrap {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      background-color: rgba(0, 168, 150, 0.1);
      color: var(--primary-dark-cyan);
      font-size: 13px;
      font-weight: 600;
      border-radius: 20px;
      margin-bottom: 12px;
      letter-spacing: 1px;
    }

    .section-title {
      font-size: 32px;
      color: var(--dark-text);
      font-weight: 700;
      margin-bottom: 12px;
    }

    .section-subtitle {
      font-size: 16px;
      color: var(--muted-text);
      max-width: 700px;
      margin: 0 auto;
    }

    /* 首屏 Hero (无图片，强科技渐变) */
    .hero-section {
      background: linear-gradient(150deg, #e6f7f8 0%, #ffffff 50%, #e0f2f5 100%);
      padding: 90px 0 70px 0;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--light-border);
    }

    .hero-section::before {
      content: '';
      position: absolute;
      top: -100px;
      right: -100px;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(0, 180, 216, 0.15) 0%, rgba(255,255,255,0) 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-content {
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    /* H1改写 控制在20字以内 */
    .hero-h1 {
      font-size: 40px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--dark-text);
      margin-bottom: 20px;
      background: linear-gradient(135deg, #05668d 0%, #00a896 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--muted-text);
      margin-bottom: 35px;
      line-height: 1.7;
    }

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

    .hero-official-btn {
      font-size: 16px;
      padding: 14px 36px;
      background: linear-gradient(135deg, #028090, #00a896);
      color: #fff;
      border-radius: 30px;
      text-decoration: none;
      font-weight: 700;
      box-shadow: 0 8px 25px rgba(0, 168, 150, 0.3);
      transition: all 0.3s;
    }

    .hero-official-btn:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 30px rgba(0, 168, 150, 0.4);
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 30px;
    }

    .stat-card {
      background: var(--white);
      padding: 24px 15px;
      border-radius: 12px;
      border: 1px solid var(--light-border);
      box-shadow: var(--card-shadow);
      text-align: center;
      transition: transform 0.3s ease;
    }

    .stat-card:hover {
      transform: translateY(-5px);
    }

    .stat-num {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary-dark-cyan);
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 13px;
      color: var(--muted-text);
    }

    /* 关于我们 / 平台介绍 */
    .about-section {
      background-color: var(--white);
    }

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

    .about-text p {
      color: var(--muted-text);
      margin-bottom: 16px;
      font-size: 15px;
    }

    .about-highlights {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 15px;
      margin-top: 25px;
    }

    .highlight-item {
      background: var(--light-cyan-bg);
      padding: 15px;
      border-radius: 8px;
      border-left: 4px solid var(--primary-cyan);
    }

    .highlight-item h4 {
      font-size: 15px;
      color: var(--dark-text);
      margin-bottom: 4px;
    }

    .highlight-item p {
      font-size: 12px;
      margin: 0;
    }

    /* AIGC 服务能力 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
      gap: 24px;
    }

    .service-card {
      background: var(--white);
      border-radius: 12px;
      padding: 24px;
      border: 1px solid var(--light-border);
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

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

    .service-icon-box {
      width: 48px;
      height: 48px;
      background: var(--light-cyan-bg);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary-dark-cyan);
      margin-bottom: 16px;
      font-size: 20px;
    }

    .service-card h3 {
      font-size: 18px;
      margin-bottom: 10px;
      color: var(--dark-text);
    }

    .service-card p {
      font-size: 13px;
      color: var(--muted-text);
      line-height: 1.6;
      flex-grow: 1;
    }

    .service-tag {
      margin-top: 15px;
      display: inline-block;
      font-size: 11px;
      padding: 3px 8px;
      background: #e0f2f1;
      color: var(--primary-dark-cyan);
      border-radius: 4px;
      width: fit-content;
    }

    /* 流程与行业方案 */
    .process-section {
      background-color: var(--white);
    }

    .process-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 15px;
      position: relative;
    }

    .step-card {
      text-align: center;
      padding: 20px 10px;
      background: var(--light-cyan-bg);
      border-radius: 10px;
      position: relative;
    }

    .step-num {
      width: 36px;
      height: 36px;
      background: var(--primary-cyan);
      color: var(--white);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      margin: 0 auto 12px auto;
    }

    .step-card h4 {
      font-size: 15px;
      margin-bottom: 6px;
    }

    .step-card p {
      font-size: 12px;
      color: var(--muted-text);
    }

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

    .case-card {
      background: var(--white);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--card-shadow);
      border: 1px solid var(--light-border);
    }

    .case-img-wrap {
      width: 100%;
      height: 200px;
      overflow: hidden;
      background-color: #f0f4f8;
    }

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

    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }

    .case-info {
      padding: 20px;
    }

    .case-info h4 {
      font-size: 17px;
      margin-bottom: 8px;
    }

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

    .banner-gallery {
      margin-top: 40px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 15px;
    }

    .banner-gallery-item {
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    }

    /* 对比评测板块 (五星 9.9分) */
    .evaluation-section {
      background: var(--white);
    }

    .score-box {
      background: linear-gradient(135deg, #05668d, #00a896);
      color: var(--white);
      padding: 30px;
      border-radius: 16px;
      text-align: center;
      margin-bottom: 40px;
      display: flex;
      align-items: center;
      justify-content: space-around;
      flex-wrap: wrap;
      gap: 20px;
    }

    .score-main {
      text-align: center;
    }

    .score-val {
      font-size: 54px;
      font-weight: 900;
      line-height: 1;
    }

    .score-stars {
      color: #ffd166;
      font-size: 24px;
      margin-top: 5px;
    }

    .compare-table-wrap {
      overflow-x: auto;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      background: var(--white);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: var(--card-shadow);
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 1px solid var(--light-border);
      font-size: 14px;
    }

    .compare-table th {
      background: var(--light-cyan-bg);
      color: var(--dark-text);
      font-weight: 700;
    }

    .compare-table tr:hover {
      background: rgba(238, 249, 252, 0.5);
    }

    .highlight-cell {
      color: var(--primary-dark-cyan);
      font-weight: 700;
      background: rgba(0, 168, 150, 0.05);
    }

    /* Token 比价表 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .token-card {
      background: var(--white);
      border: 1px solid var(--light-border);
      padding: 20px;
      border-radius: 10px;
      box-shadow: var(--card-shadow);
    }

    .token-card h4 {
      color: var(--primary-dark-cyan);
      margin-bottom: 10px;
      font-size: 16px;
    }

    .price-tag-wrap {
      display: flex;
      align-items: baseline;
      gap: 10px;
      margin: 10px 0;
    }

    .official-price {
      text-decoration: line-through;
      color: var(--muted-text);
      font-size: 13px;
    }

    .our-price {
      color: #e63946;
      font-size: 20px;
      font-weight: 800;
    }

    /* 用户评论 (6条) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .review-card {
      background: var(--white);
      padding: 24px;
      border-radius: 12px;
      box-shadow: var(--card-shadow);
      border: 1px solid var(--light-border);
    }

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

    .avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-cyan);
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    .user-info h5 {
      font-size: 15px;
    }

    .user-info span {
      font-size: 12px;
      color: var(--muted-text);
    }

    .review-body {
      font-size: 13px;
      color: var(--dark-text);
      line-height: 1.6;
    }

    /* FAQ折叠面板 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--white);
      border-radius: 8px;
      margin-bottom: 12px;
      border: 1px solid var(--light-border);
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 24px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 15px;
    }

    .faq-answer {
      padding: 0 24px 18px 24px;
      color: var(--muted-text);
      font-size: 14px;
      display: none;
      border-top: 1px dashed var(--light-border);
      padding-top: 12px;
    }

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

    .faq-toggle-icon {
      transition: transform 0.3s;
      font-weight: 300;
    }

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

    /* 资讯与百科 */
    .news-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 30px;
    }

    .article-list {
      background: var(--white);
      padding: 24px;
      border-radius: 12px;
      border: 1px solid var(--light-border);
    }

    .article-item {
      padding: 12px 0;
      border-bottom: 1px solid var(--light-border);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .article-item:last-child {
      border-bottom: none;
    }

    .article-item a {
      color: var(--dark-text);
      text-decoration: none;
      font-size: 14px;
      transition: color 0.2s;
    }

    .article-item a:hover {
      color: var(--primary-cyan);
    }

    .wiki-sidebar {
      background: var(--white);
      padding: 24px;
      border-radius: 12px;
      border: 1px solid var(--light-border);
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 15px;
    }

    .tag-item {
      padding: 4px 10px;
      background: var(--light-cyan-bg);
      color: var(--primary-dark-cyan);
      font-size: 12px;
      border-radius: 4px;
      text-decoration: none;
    }

    /* 加盟代理 */
    .agency-banner {
      background: linear-gradient(135deg, #05668d, #028090);
      color: var(--white);
      border-radius: 16px;
      padding: 40px;
      text-align: center;
    }

    .agency-banner h3 {
      font-size: 28px;
      margin-bottom: 12px;
    }

    .agency-banner p {
      font-size: 15px;
      opacity: 0.9;
      max-width: 700px;
      margin: 0 auto 25px auto;
    }

    /* 表单与联系我们 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .contact-info-card {
      background: var(--white);
      padding: 30px;
      border-radius: 12px;
      border: 1px solid var(--light-border);
    }

    .info-list-item {
      display: flex;
      align-items: flex-start;
      gap: 15px;
      margin-bottom: 20px;
    }

    .info-icon {
      width: 40px;
      height: 40px;
      background: var(--light-cyan-bg);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-dark-cyan);
      font-weight: bold;
    }

    .form-card {
      background: var(--white);
      padding: 30px;
      border-radius: 12px;
      border: 1px solid var(--light-border);
      box-shadow: var(--card-shadow);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--dark-text);
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid #d0e4e6;
      border-radius: 6px;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary-cyan);
    }

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

    .qr-img-box {
      width: 130px;
      height: 130px;
      padding: 6px;
      background: #fff;
      border: 1px solid var(--light-border);
      border-radius: 8px;
      margin-top: 10px;
    }

    .qr-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    /* 友情链接与Footer */
    footer.site-footer {
      background-color: #0d1b2a;
      color: #e0e1dd;
      padding: 60px 0 20px 0;
      font-size: 13px;
    }

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

    .footer-col h5 {
      color: var(--white);
      font-size: 16px;
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 8px;
    }

    .footer-links a {
      color: #a3b18a;
      text-decoration: none;
      transition: color 0.2s;
    }

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

    .friend-links-wrap {
      border-top: 1px solid #1b263b;
      padding-top: 20px;
      margin-top: 20px;
    }

    .friend-links-title {
      font-size: 14px;
      color: #8d99ae;
      margin-bottom: 10px;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 15px;
    }

    .friend-links a {
      color: #a3b18a;
      text-decoration: none;
      font-size: 12px;
    }

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

    .footer-bottom {
      border-top: 1px solid #1b263b;
      padding-top: 20px;
      text-align: center;
      color: #778da9;
    }

    /* 悬浮组件 */
    .float-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(--white);
      border-radius: 50%;
      box-shadow: 0 4px 15px rgba(0,0,0,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-dark-cyan);
      text-decoration: none;
      font-weight: bold;
      font-size: 12px;
      cursor: pointer;
      border: 1px solid var(--light-border);
      transition: all 0.2s;
    }

    .float-btn:hover {
      background: var(--primary-cyan);
      color: var(--white);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-stats-grid, .cases-grid, .token-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-steps {
        grid-template-columns: repeat(3, 1fr);
      }
      .about-grid, .contact-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 20px 0;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--light-border);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li a {
        padding: 12px 20px;
        width: 100%;
        display: block;
      }
    }

    @media (max-width: 600px) {
      .hero-h1 {
        font-size: 26px;
      }
      .hero-stats-grid, .cases-grid, .token-grid, .reviews-grid, .process-steps {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .banner-gallery {
        grid-template-columns: repeat(2, 1fr);
      }
    }