/* FAQ 外部容器 */
  .faq-container {
    max-width: 800px;
    margin: 40px auto;
    font-family: 'Arial', sans-serif;
  }

  /* 银色渐变装饰条 */
  .faq-container::before {
    content: "";
    display: block;
    height: 4px;
    background: linear-gradient(90deg, #d1d9e1, #ffffff, #d1d9e1);
    margin-bottom: 20px;
    border-radius: 2px;
  }

  /* 模块分类小标题 */
  .faq-category-title {
    color: #234F96;
    font-size: 18px;
    font-weight: bold;
    margin: 30px 0 15px 0;
    padding-bottom: 8px;
    border-bottom: 2px solid #C8D5DE;
  }

  /* 每个折叠面板的样式 */
  .faq-item {
    background-color: #ffffff;
    border: 1px solid #C8D5DE;
    border-radius: 6px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0,0,0,0.02);
  }

  /* 问题行 (标题) 样式 */
  .faq-item summary {
    padding: 16px 20px;
    font-size: 16px;
    font-weight: 600;
    color: #234F96;
    background-color: #f8fafc;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease, color 0.3s ease;
  }

  /* 自定义右侧加减号 */
  .faq-item summary::after {
    content: "+";
    color: #C8D5DE;
    font-size: 22px;
    font-weight: 300;
    transition: transform 0.3s ease;
  }

  /* 隐藏 Safari 默认的箭头 */
  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .faq-item summary:hover {
    background-color: #eef2f6;
  }

  /* 面板展开时的样式 */
  .faq-item[open] summary {
    background: linear-gradient(135deg, #234F96, #2d5db0);
    color: #ffffff;
    border-bottom: 1px solid #C8D5DE;
  }

  .faq-item[open] summary::after {
    content: "−";
    color: #ffffff;
    transform: rotate(180deg);
  }

  /* 答案内容区域 */
  .faq-answer {
    padding: 20px;
    font-size: 15px;
    line-height: 1.6;
    color: #4a5568;
    background-color: #ffffff;
    border-top: 1px solid #f1f5f9;
  }