.tengyan-faq-container {
    max-width: 100%;
    font-family: Arial, sans-serif;
    color: #333;
    line-height: 1.6;
  }
  .tengyan-faq-item {
    border-bottom: 1px solid #e0e0e0;
    margin-bottom: 10px;
  }
  .tengyan-faq-item details {
    width: 100%;
  }
  .tengyan-faq-item summary {
    font-size: 16px;
    font-weight: bold;
    color: #1a1a1a;
    padding: 15px 10px 15px 0;
    cursor: pointer;
    list-style: none;
    position: relative;
    outline: none;
  }
  /* 隐藏默认的小三角图标，自定义右侧加号 */
  .tengyan-faq-item summary::-webkit-details-marker {
    display: none;
  }
  .tengyan-faq-item summary::after {
    content: '+';
    position: absolute;
    right: 10px;
    font-size: 20px;
    color: #666;
    transition: transform 0.2s ease;
  }
  .tengyan-faq-item details[open] summary::after {
    content: '−';
    color: #0056b3;
  }
  .tengyan-faq-item details[open] summary {
    color: #0056b3;
  }
  .tengyan-faq-answer {
    padding: 0 10px 15px 0;
    font-size: 14px;
    color: #555;
  }