/* 核心样式与重置 */
    :root {
      --primary: #6366f1;
      --primary-hover: #4f46e5;
      --secondary: #ec4899;
      --accent: #8b5cf6;
      --dark: #0f172a;
      --light: #f8fafc;
      --text: #334155;
      --border: #e2e8f0;
      --holo-bg: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(236, 72, 153, 0.05) 50%, rgba(139, 92, 246, 0.05) 100%);
      --holo-border: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(236, 72, 153, 0.3), rgba(139, 92, 246, 0.3));
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }

    body {
      background-color: var(--light);
      color: var(--text);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: var(--holo-bg);
      background-attachment: fixed;
    }

    /* 容器规范 */
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 标题规范 */
    h1, h2, h3, h4 {
      color: var(--dark);
      font-weight: 700;
    }

    /* 按钮样式 (具有幻彩光效) */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 16px;
      font-weight: 600;
      border-radius: 8px;
      border: none;
      cursor: pointer;
      transition: all 0.3s ease;
      text-decoration: none;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--accent), var(--secondary));
      color: white;
      box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
    }

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

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

    /* 顶部导航 */
    header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.8);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border);
    }

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

    .logo-container {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .ai-page-logo {
      height: 40px;
    }

    .logo-text {
      font-size: 20px;
      font-weight: 800;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    nav {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .nav-menu {
      display: flex;
      list-style: none;
      gap: 20px;
    }

    .nav-menu a {
      text-decoration: none;
      color: var(--text);
      font-weight: 500;
      font-size: 14px;
      transition: color 0.3s;
    }

    .nav-menu a:hover {
      color: var(--primary);
    }

    .nav-btn {
      padding: 8px 18px;
      font-size: 14px;
    }

    /* 移动端菜单按钮 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 5px;
    }

    .menu-toggle span {
      display: block;
      width: 25px;
      height: 30px;
      position: relative;
    }

    .menu-toggle span::before,
    .menu-toggle span::after,
    .menu-toggle span span {
      content: '';
      position: absolute;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--dark);
      transition: transform 0.3s, top 0.3s, bottom 0.3s;
    }

    .menu-toggle span::before { top: 6px; }
    .menu-toggle span span { top: 14px; }
    .menu-toggle span::after { bottom: 6px; }

    /* 首屏 Hero 区域 (无图片) */
    .hero-section {
      padding: 100px 0 80px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .hero-tag {
      display: inline-block;
      padding: 6px 16px;
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
      border: 1px solid rgba(99, 102, 241, 0.2);
      border-radius: 50px;
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 20px;
    }

    .hero-section h1 {
      font-size: 40px;
      line-height: 1.25;
      margin-bottom: 24px;
      background: linear-gradient(135deg, var(--dark) 30%, var(--accent), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text);
      max-width: 800px;
      margin: 0 auto 36px;
    }

    .hero-btn-group {
      display: flex;
      justify-content: center;
      gap: 15px;
      margin-bottom: 50px;
    }

    /* 数据指标卡片 */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }

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

    .stat-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 10px 25px rgba(99, 102, 241, 0.1);
    }

    .stat-num {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .stat-label {
      font-size: 14px;
      color: var(--text);
    }

    /* 通用模块样式 */
    section {
      padding: 80px 0;
      border-bottom: 1px solid var(--border);
    }

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

    .section-title h2 {
      font-size: 32px;
      margin-bottom: 16px;
      position: relative;
      display: inline-block;
    }

    .section-title h2::after {
      content: '';
      position: absolute;
      bottom: -8px;
      left: 50%;
      transform: translateX(-50%);
      width: 60px;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      border-radius: 2px;
    }

    .section-title p {
      color: var(--text);
      font-size: 16px;
    }

    /* 关于我们 */
    .about-content {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-text h3 {
      font-size: 24px;
      margin-bottom: 16px;
    }

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

    .highlight-box {
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(236, 72, 153, 0.05));
      border-left: 4px solid var(--primary);
      padding: 20px;
      border-radius: 0 8px 8px 0;
      margin-top: 20px;
    }

    /* 全平台 AIGC 服务标签云 */
    .platform-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .tag-item {
      padding: 8px 16px;
      background: white;
      border: 1px solid var(--border);
      border-radius: 30px;
      font-size: 14px;
      color: var(--dark);
      font-weight: 500;
      transition: all 0.3s ease;
      cursor: default;
    }

    .tag-item:hover {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: white;
      border-color: transparent;
      transform: scale(1.05);
    }

    /* 服务能力与场景 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: white;
      padding: 30px;
      border-radius: 12px;
      border: 1px solid var(--border);
      transition: all 0.3s ease;
    }

    .service-card:hover {
      transform: translateY(-5px);
      border-color: var(--primary);
      box-shadow: 0 10px 30px rgba(99, 102, 241, 0.1);
    }

    .service-icon {
      font-size: 36px;
      margin-bottom: 20px;
    }

    .service-card h3 {
      font-size: 20px;
      margin-bottom: 12px;
    }

    .service-card p {
      font-size: 14px;
      color: var(--text);
    }

    /* 流程与步骤 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
      position: relative;
    }

    .process-step {
      text-align: center;
      position: relative;
    }

    .step-num {
      width: 50px;
      height: 50px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: white;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 700;
      margin: 0 auto 20px;
      box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
    }

    .process-step h3 {
      font-size: 16px;
      margin-bottom: 8px;
    }

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

    /* 技术标准 & 解决方案 */
    .solution-tabs {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .solution-item {
      background: white;
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 24px;
      text-align: left;
    }

    .solution-item h3 {
      font-size: 18px;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .solution-item ul {
      list-style-position: inside;
      font-size: 14px;
      color: var(--text);
    }

    .solution-item li {
      margin-bottom: 8px;
    }

    /* 对比评测版块 */
    .review-summary {
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(236, 72, 153, 0.05));
      border: 1px dashed var(--primary);
      border-radius: 12px;
      padding: 30px;
      display: flex;
      align-items: center;
      justify-content: space-around;
      margin-bottom: 40px;
      flex-wrap: wrap;
      gap: 20px;
    }

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

    .score-val {
      font-size: 64px;
      font-weight: 900;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1;
    }

    .stars {
      color: #f59e0b;
      font-size: 24px;
      margin-top: 8px;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: white;
      border-radius: 12px;
      border: 1px solid var(--border);
    }

    table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 800px;
    }

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

    th {
      background: var(--light);
      font-weight: 600;
      color: var(--dark);
    }

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

    .highlight-row {
      background: rgba(99, 102, 241, 0.02);
    }

    .badge {
      display: inline-block;
      padding: 4px 8px;
      font-size: 12px;
      border-radius: 4px;
      font-weight: 600;
    }

    .badge-success {
      background-color: rgba(34, 197, 94, 0.1);
      color: #15803d;
    }

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

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

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

    .case-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s;
    }

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

    .case-info {
      padding: 20px;
    }

    .case-info h3 {
      font-size: 18px;
      margin-bottom: 8px;
    }

    .case-info p {
      font-size: 14px;
      color: var(--text);
    }

    /* 人工智能培训 */
    .training-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
    }

    .training-card {
      background: white;
      padding: 20px;
      border-radius: 10px;
      border: 1px solid var(--border);
      text-align: center;
      box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    }

    .training-card h3 {
      font-size: 16px;
      margin-bottom: 10px;
      color: var(--primary);
    }

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

    /* FAQ 折叠面板 */
    .faq-accordion {
      max-width: 800px;
      margin: 0 auto;
    }

    .faq-item {
      background: white;
      border: 1px solid var(--border);
      border-radius: 8px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color 0.3s;
    }

    .faq-header {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 600;
      color: var(--dark);
    }

    .faq-header::after {
      content: '+';
      font-size: 20px;
      color: var(--text);
      transition: transform 0.3s;
    }

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

    .faq-item.active .faq-header::after {
      content: '-';
      transform: rotate(180deg);
    }

    .faq-content {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      color: var(--text);
      font-size: 14px;
    }

    .faq-item.active .faq-content {
      padding: 0 24px 18px;
      max-height: 200px;
    }

    /* 常见问题自助排查 & 网站术语百科 */
    .help-double-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

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

    .help-box h3 {
      font-size: 20px;
      margin-bottom: 20px;
      border-bottom: 2px solid var(--border);
      padding-bottom: 10px;
    }

    .help-list {
      list-style: none;
    }

    .help-list li {
      margin-bottom: 15px;
      display: flex;
      align-items: flex-start;
      gap: 8px;
    }

    .help-list li strong {
      color: var(--dark);
      font-size: 14px;
    }

    .help-list li p {
      font-size: 13px;
      color: var(--text);
    }

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

    .comment-card {
      background: white;
      border-radius: 12px;
      border: 1px solid var(--border);
      padding: 24px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.01);
    }

    .comment-header {
      display: flex;
      justify-content: space-between;
      margin-bottom: 15px;
    }

    .user-info h4 {
      font-size: 16px;
      color: var(--dark);
    }

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

    .comment-text {
      font-size: 14px;
      color: var(--text);
      font-style: italic;
    }

    /* 行业资讯 / 知识库 */
    .article-section {
      background: white;
    }

    .article-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .article-main {
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-main h3 {
      font-size: 22px;
      margin-bottom: 15px;
    }

    .article-main p {
      font-size: 14px;
      color: var(--text);
      margin-bottom: 20px;
    }

    .article-list {
      display: flex;
      flex-direction: column;
      gap: 15px;
    }

    .article-item {
      padding: 15px;
      border: 1px solid var(--border);
      border-radius: 8px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: all 0.3s;
      text-decoration: none;
      color: inherit;
    }

    .article-item:hover {
      border-color: var(--primary);
      background: rgba(99, 102, 241, 0.02);
    }

    .article-item h4 {
      font-size: 15px;
      color: var(--dark);
    }

    .article-item span {
      font-size: 12px;
      color: var(--text);
    }

    /* 智能需求匹配与联系我们表单 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
    }

    .contact-info h3 {
      font-size: 24px;
      margin-bottom: 16px;
    }

    .contact-info p {
      margin-bottom: 24px;
    }

    .contact-details {
      list-style: none;
      margin-bottom: 30px;
    }

    .contact-details li {
      margin-bottom: 12px;
      font-size: 15px;
    }

    .contact-details strong {
      color: var(--dark);
    }

    .qrcode-area {
      display: flex;
      gap: 20px;
      margin-top: 20px;
    }

    .qrcode-box {
      text-align: center;
      background: white;
      padding: 15px;
      border-radius: 8px;
      border: 1px solid var(--border);
      max-width: 140px;
    }

    .qrcode-box img {
      width: 100px;
      height: 100px;
      object-fit: cover;
      margin-bottom: 8px;
    }

    .qrcode-box span {
      font-size: 12px;
      display: block;
      color: var(--dark);
      font-weight: 600;
    }

    .form-box {
      background: white;
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 30px;
      box-shadow: 0 4px 20px rgba(0,0,0,0.02);
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-group label {
      display: block;
      margin-bottom: 6px;
      font-size: 14px;
      font-weight: 600;
      color: var(--dark);
    }

    .form-control {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border);
      border-radius: 6px;
      font-size: 14px;
      outline: none;
      transition: border-color 0.3s;
    }

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

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 15px;
    }

    /* 友情链接与页脚 */
    footer {
      background: var(--dark);
      color: #94a3b8;
      padding: 60px 0 30px;
      font-size: 14px;
      border-top: none;
    }

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

    .footer-about h4 {
      color: white;
      margin-bottom: 16px;
      font-size: 18px;
    }

    .footer-links h4 {
      color: white;
      margin-bottom: 16px;
      font-size: 16px;
    }

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

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

    .footer-links a {
      color: #94a3b8;
      text-decoration: none;
      transition: color 0.3s;
    }

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

    .friend-links {
      border-top: 1px solid #334155;
      padding-top: 20px;
      margin-bottom: 20px;
    }

    .friend-links h4 {
      color: white;
      font-size: 14px;
      margin-bottom: 12px;
    }

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

    .friend-links-wrapper a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 13px;
    }

    .friend-links-wrapper a:hover {
      color: white;
    }

    .footer-bottom {
      border-top: 1px solid #334155;
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
    }

    .ai-page-home-link {
      color: #94a3b8;
      text-decoration: none;
    }

    .ai-page-home-link:hover {
      color: white;
    }

    /* 浮动客服入口 */
    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 80px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-item {
      width: 50px;
      height: 50px;
      background: white;
      border: 1px solid var(--border);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
      cursor: pointer;
      position: relative;
      transition: all 0.3s;
    }

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

    .float-item svg {
      width: 24px;
      height: 24px;
      fill: currentColor;
    }

    .float-item .popover {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: white;
      border: 1px solid var(--border);
      padding: 15px;
      border-radius: 8px;
      box-shadow: 0 4px 15px rgba(0,0,0,0.15);
      display: none;
      text-align: center;
      width: 140px;
    }

    .float-item:hover .popover {
      display: block;
      color: var(--dark);
    }

    .float-item .popover img {
      width: 100px;
      height: 100px;
      object-fit: cover;
      margin-bottom: 5px;
    }

    .float-item .popover span {
      font-size: 12px;
      font-weight: 600;
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .service-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
      }
      .case-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .comment-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .training-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        border-bottom: 1px solid var(--border);
        padding: 20px;
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
      }

      .nav-menu.active {
        display: flex;
      }

      .menu-toggle {
        display: block;
      }

      .about-content,
      .help-double-grid,
      .contact-wrapper,
      .article-grid {
        grid-template-columns: 1fr;
      }

      .stats-grid,
      .service-grid,
      .case-grid,
      .comment-grid,
      .training-grid {
        grid-template-columns: 1fr;
      }

      .process-timeline {
        grid-template-columns: 1fr;
      }

      .solution-tabs {
        grid-template-columns: 1fr;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }

      .hero-section h1 {
        font-size: 28px;
      }

      .hero-btn-group {
        flex-direction: column;
        align-items: center;
      }

      .hero-btn-group .btn {
        width: 100%;
        max-width: 280px;
      }
    }