/* 全局样式 */
    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.8;
      margin: 0;
      padding: 0;
      background-color: #f5f7fa;
      color: #333;
    }
    
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 首字母大写样式 - 仅应用于长段落 */
    .first-letter-drop:first-letter {
      font-size: 2.5em;
      font-weight: bold;
      color: #2c3e50;
      float: left;
      line-height: 0.8;
      margin-right: 8px;
    }

    /* 标题样式 */
    h1 {
      font-size: 2.8rem;
      color: #2c3e50;
      text-align: center;
      margin: 40px 0 60px;
      padding-bottom: 15px;
      border-bottom: 3px solid #3498db;
      font-weight: 700;
    }

    h2 {
      font-size: 2.2rem;
      color: #3498db;
      margin: 60px 0 30px;
      padding-left: 15px;
      border-left: 4px solid #2c3e50;
    }

    h3 {
      font-size: 1.6rem;
      color: #2c3e50;
      margin: 30px 0 20px;
    }

    /* 段落样式 */
    p {
      color: #333;
      margin-bottom: 25px;
      font-size: 1.05rem;
    }

    /* 表格样式 */
    table {
      border-collapse: collapse;
      width: 100%;
      margin: 30px 0;
      background-color: #fff;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
      border-radius: 8px;
      overflow: hidden;
    }

    th, td {
      padding: 15px;
      text-align: left;
      border-bottom: 1px solid #e0e0e0;
    }

    th {
      background-color: #2c3e50;
      color: white;
      font-weight: 600;
    }

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

    tr:hover {
      background-color: #f8f9fa;
    }

    /* 列表样式 */
    ul, ol {
      padding-left: 25px;
      margin-bottom: 25px;
    }

    li {
      margin-bottom: 10px;
    }

    /* 插图样式 */
    .img-container {
      margin: 40px 0;
    }

    .single-img {
      text-align: center;
    }

    .side-by-side {
      display: flex;
      align-items: center;
      gap: 30px;
      flex-wrap: wrap;
    }

    .img-wrapper {
      flex: 1;
      min-width: 300px;
    }

    .text-wrapper {
      flex: 1;
      min-width: 300px;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto; /* 确保图片居中 */
      border-radius: 8px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s ease;
    }

    img:hover {
      transform: translateY(-5px);
    }

    .img-desc {
      color: #666;
      font-size: 0.95rem;
      margin-top: 12px;
      text-align: center;
      font-style: italic;
      text-transform: none; /* 确保图片说明首字母不大写 */
    }

    /* 步骤图样式 */
    .steps-container {
      display: flex;
      flex-wrap: wrap;
      gap: 25px;
      margin: 40px 0;
    }

    .step-item {
      flex: 1;
      min-width: 250px;
    }

    .step-number {
      display: inline-block;
      width: 30px;
      height: 30px;
      background-color: #3498db;
      color: white;
      border-radius: 50%;
      text-align: center;
      line-height: 30px;
      margin-right: 10px;
      font-weight: bold;
    }

    /* 链接样式 */
    a {
      color: #3498db;
      text-decoration: none;
      font-weight: 500;
    }

    a:hover {
      text-decoration: underline;
    }

    /* FAQ样式 */
    dl {
      margin: 30px 0;
    }

    dt {
      font-weight: bold;
      color: #2c3e50;
      margin-top: 20px;
      font-size: 1.1rem;
    }

    dd {
      margin-left: 20px;
      color: #555;
      margin-bottom: 10px;
    }

    /* 用户评价样式 */
    .testimonials {
      margin: 50px 0;
    }

    .testimonial {
      background-color: #fff;
      padding: 30px;
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
      margin-bottom: 30px;
      position: relative;
    }

    .testimonial:before {
      content: """;
      font-size: 5rem;
      color: #e6f2ff;
      position: absolute;
      top: 10px;
      left: 15px;
      font-family: Georgia, serif;
    }

    .testimonial-text {
      position: relative;
      z-index: 1;
      padding-left: 20px;
    }

    .testimonial-author {
      font-weight: bold;
      color: #2c3e50;
      margin-top: 15px;
      font-size: 1rem; /* 正常大小，不使用特大写 */
    }

    /* 响应式调整 */
    @media (max-width: 768px) {
      h1 {
        font-size: 2.2rem;
      }
      
      h2 {
        font-size: 1.8rem;
      }
      
      .side-by-side {
        flex-direction: column;
      }
    }