/* 全局重置与基础样式 */
    :root {
      --primary: #ff007f;
      --secondary: #00f0ff;
      --accent: #7000ff;
      --dark: #0f172a;
      --light: #f8fafc;
      --gray: #64748b;
      --border: #e2e8f0;
      --card-bg: #ffffff;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      scroll-behavior: smooth;
    }
    
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--light);
      color: var(--dark);
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

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

    /* 高饱和艳彩风渐变背景修饰 */
    .neon-gradient-text {
      background: linear-gradient(135deg, var(--primary), var(--accent), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      font-weight: 800;
    }

    .neon-btn {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff !important;
      font-weight: bold;
      border: none;
      padding: 12px 28px;
      border-radius: 50px;
      box-shadow: 0 4px 15px rgba(255, 0, 127, 0.4);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: var(--transition);
    }

    .neon-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 240, 255, 0.6);
      background: linear-gradient(135deg, var(--accent), var(--secondary));
    }

    .section-title {
      font-size: 2rem;
      text-align: center;
      margin-bottom: 12px;
      font-weight: 800;
      color: var(--dark);
    }

    .section-subtitle {
      text-align: center;
      color: var(--gray);
      margin-bottom: 40px;
      font-size: 1rem;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }

    section {
      padding: 80px 0;
      border-bottom: 1px solid var(--border);
    }

    /* 头部导航 */
    header {
      background: rgba(255, 255, 255, 0.9);
      backdrop-filter: blur(10px);
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid var(--border);
      box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    }

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

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

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

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

    .nav-link {
      font-weight: 500;
      color: var(--dark);
      font-size: 0.95rem;
    }

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

    .nav-btn {
      padding: 8px 18px;
      font-size: 0.9rem;
    }

    .menu-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
    }

    .menu-toggle span {
      width: 25px;
      height: 3px;
      background: var(--dark);
      border-radius: 3px;
      transition: var(--transition);
    }

    /* Hero 首屏 - 无任何图片 */
    .hero-section {
      background: radial-gradient(circle at 10% 20%, rgba(255, 0, 127, 0.05) 0%, rgba(0, 240, 255, 0.05) 90.1%);
      padding: 100px 0 80px 0;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .hero-content {
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-tag {
      background: rgba(255, 0, 127, 0.1);
      color: var(--primary);
      padding: 6px 16px;
      border-radius: 20px;
      font-size: 0.9rem;
      font-weight: 600;
      display: inline-block;
      margin-bottom: 20px;
    }

    .hero-title {
      font-size: 3rem;
      line-height: 1.2;
      margin-bottom: 24px;
    }

    .hero-desc {
      font-size: 1.2rem;
      color: var(--gray);
      margin-bottom: 35px;
      line-height: 1.8;
    }

    .hero-btns {
      display: flex;
      justify-content: center;
      gap: 20px;
      margin-bottom: 50px;
    }

    .hero-primary-btn {
      font-size: 1.1rem;
      padding: 14px 40px;
    }

    .hero-sec-btn {
      border: 2px solid var(--accent);
      color: var(--accent);
      font-weight: bold;
      padding: 12px 38px;
      border-radius: 50px;
      transition: var(--transition);
    }

    .hero-sec-btn:hover {
      background: var(--accent);
      color: #fff;
    }

    /* 数据指标卡片 */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 30px;
    }

    .stat-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 24px;
      box-shadow: 0 4px 6px rgba(0,0,0,0.02);
      transition: var(--transition);
    }

    .stat-card:hover {
      transform: translateY(-5px);
      border-color: var(--primary);
    }

    .stat-num {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--gray);
    }

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

    .about-text h3 {
      font-size: 1.8rem;
      margin-bottom: 15px;
      color: var(--dark);
    }

    .about-text p {
      color: var(--gray);
      margin-bottom: 20px;
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 20px;
    }

    .tag-item {
      background: #f1f5f9;
      color: var(--dark);
      padding: 6px 12px;
      border-radius: 6px;
      font-size: 0.85rem;
      font-weight: 500;
    }

    /* 服务能力卡片 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .service-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 30px;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      opacity: 0;
      transition: var(--transition);
    }

    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 10px 30px rgba(0,0,0,0.08);
      border-color: transparent;
    }

    .service-card:hover::before {
      opacity: 1;
    }

    .service-icon {
      font-size: 2.5rem;
      margin-bottom: 20px;
    }

    .service-card h3 {
      font-size: 1.3rem;
      margin-bottom: 12px;
    }

    .service-card p {
      color: var(--gray);
      font-size: 0.95rem;
    }

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

    .step-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 24px;
      text-align: center;
      position: relative;
    }

    .step-num {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      margin: 0 auto 15px auto;
    }

    .step-title {
      font-weight: bold;
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 0.85rem;
      color: var(--gray);
    }

    /* 对比表格 */
    .table-container {
      overflow-x: auto;
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 16px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    }

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

    .comparison-table th, .comparison-table td {
      padding: 16px 24px;
      border-bottom: 1px solid var(--border);
    }

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

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

    .highlight-cell {
      background: rgba(255, 0, 127, 0.02);
      font-weight: bold;
      color: var(--primary);
    }

    .score-badge {
      display: inline-block;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      padding: 6px 12px;
      border-radius: 20px;
      font-size: 0.9rem;
      font-weight: 800;
    }

    /* 培训板块 */
    .training-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .training-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 35px;
      box-shadow: 0 5px 15px rgba(0,0,0,0.02);
    }

    .training-card h3 {
      font-size: 1.5rem;
      margin-bottom: 20px;
      color: var(--dark);
      border-left: 4px solid var(--primary);
      padding-left: 12px;
    }

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

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

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

    .course-name {
      font-weight: 600;
    }

    .course-badge {
      background: rgba(0, 240, 255, 0.1);
      color: #0099bb;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 0.8rem;
    }

    /* 案例展示区 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .case-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    }

    .case-img-wrap {
      position: relative;
      background: #e2e8f0;
      aspect-ratio: 16/9;
      overflow: hidden;
    }

    .case-body {
      padding: 20px;
    }

    .case-title {
      font-weight: 700;
      font-size: 1.1rem;
      margin-bottom: 10px;
    }

    .case-desc {
      font-size: 0.9rem;
      color: var(--gray);
    }

    /* 用户评论 */
    .comment-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .comment-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 24px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.02);
    }

    .comment-text {
      font-style: italic;
      color: var(--gray);
      margin-bottom: 20px;
      font-size: 0.95rem;
    }

    .comment-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .user-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--secondary), var(--accent));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
    }

    .user-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
    }

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

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

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

    .faq-header {
      padding: 18px 24px;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #fff;
      transition: var(--transition);
    }

    .faq-header:hover {
      background: #fafafa;
    }

    .faq-icon {
      transition: var(--transition);
      display: inline-block;
      width: 20px;
      text-align: center;
    }

    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      padding: 0 24px;
      color: var(--gray);
      font-size: 0.95rem;
    }

    .faq-item.active .faq-content {
      padding: 18px 24px;
      border-top: 1px solid var(--border);
    }

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

    /* 自助排查与百科 */
    .trouble-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    .trouble-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 25px;
    }

    .trouble-card h3 {
      margin-bottom: 15px;
      font-size: 1.25rem;
    }

    .trouble-list {
      list-style-type: decimal;
      padding-left: 20px;
      color: var(--gray);
    }

    .trouble-list li {
      margin-bottom: 10px;
    }

    /* 资讯列表 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .news-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 20px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .news-card h4 {
      font-size: 1.1rem;
      margin-bottom: 10px;
    }

    .news-card a {
      color: var(--accent);
      font-weight: 600;
      margin-top: 15px;
      display: inline-block;
    }

    /* 表单与需求匹配 */
    .form-wrapper {
      max-width: 700px;
      margin: 0 auto;
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 40px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    }

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

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

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

    .form-control {
      padding: 12px;
      border: 1px solid var(--border);
      border-radius: 8px;
      font-size: 0.95rem;
      background: var(--light);
      transition: var(--transition);
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: #fff;
    }

    /* 浮动客服 & 返回顶部 */
    .float-widgets {
      position: fixed;
      right: 20px;
      bottom: 20px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

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

    .float-btn:hover {
      background: var(--primary);
      color: #fff;
    }

    .qrcode-popover {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 10px;
      box-shadow: 0 10px 20px rgba(0,0,0,0.15);
      display: none;
      width: 150px;
    }

    .float-btn:hover .qrcode-popover {
      display: block;
    }

    /* 页脚 */
    footer {
      background: var(--dark);
      color: #f8fafc;
      padding: 60px 0 20px 0;
    }

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

    .footer-info img {
      margin-bottom: 20px;
    }

    .footer-links h5 {
      font-size: 1.1rem;
      margin-bottom: 20px;
      color: #fff;
    }

    .footer-links ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      color: #94a3b8;
    }

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

    .footer-qr {
      text-align: center;
    }

    .footer-qr img {
      width: 100px;
      margin: 0 auto 10px auto;
      border-radius: 4px;
    }

    .footer-bottom {
      border-top: 1px solid #334155;
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    .friend-links {
      margin-top: 20px;
      display: flex;
      flex-wrap: wrap;
      gap: 15px;
      font-size: 0.85rem;
      color: #64748b;
      border-top: 1px solid #334155;
      padding-top: 15px;
    }

    .friend-links a {
      color: #94a3b8;
    }

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

    /* 移动端适配 */
    @media (max-width: 992px) {
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .service-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .comment-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        padding: 20px;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
      }
      .nav-menu.active {
        display: flex;
      }
      .menu-toggle {
        display: flex;
      }
      .hero-title {
        font-size: 2.2rem;
      }
      .about-layout {
        grid-template-columns: 1fr;
      }
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .service-grid {
        grid-template-columns: 1fr;
      }
      .flow-steps {
        grid-template-columns: 1fr;
      }
      .case-grid {
        grid-template-columns: 1fr;
      }
      .comment-grid {
        grid-template-columns: 1fr;
      }
      .training-grid {
        grid-template-columns: 1fr;
      }
      .trouble-grid {
        grid-template-columns: 1fr;
      }
      .news-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
    }