/* 全局样式 */
  body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1e1e2d, #27293d);
    color: #ffffff;
    line-height: 1.6;
  }

  h1, h2, h3 {
    color: #4a90e2;
    font-weight: bold;
    text-align: center;
    margin-top: 20px;
  }

  p {
    padding: 0 20px;
    text-align: justify;
  }

  pre {
    background: #2e2e3e;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    margin: 20px;
  }

  code {
    color: #4a90e2;
    font-family: 'Courier New', Courier, monospace;
  }

  /* 容器样式 */
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
  }

  /* 网格布局 */
  .grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    padding: 20px;
  }

  /* 卡片样式 */
  .card {
    background: linear-gradient(145deg, #2c3e50, #4a90e2);
    border-radius: 10px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.3);
    padding: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    overflow: hidden;
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 16px 24px rgba(0,0,0,0.4);
  }

  .card img {
    width: 100%;
    border-radius: 5px;
  }

  .card h4 {
    margin: 15px 0 10px;
    color: #ffffff;
  }

  .card p {
    color: #dcdcdc;
  }

  /* 示例数据展示 */
  .example-section {
    background: rgba(255, 255, 255, 0.1);
    padding: 40px 20px;
    border-radius: 10px;
    margin: 40px 20px;
  }

  /* 提示信息 */
  .notice {
    text-align: center;
    font-size: 1.2em;
    margin: 20px 0;
    color: #ffdd57;
  }

  /* 响应式设计 */
  @media (max-width: 768px) {
    h1, h2, h3 {
      font-size: 1.5em;
    }

    .container {
      padding: 10px;
    }

    p {
      padding: 0 10px;
    }
  }

  @media (max-width: 480px) {
    .grid-container {
      grid-template-columns: 1fr;
    }

    .card {
      padding: 15px;
    }
  }