/* 全局样式 */
  body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #00008B, #8A2BE2);
    color: #FFFFFF;
    line-height: 1.6;
    min-height: 100vh;
  }

  /* 容器布局 */
  .container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
    padding: 20px;
  }

  /* 标题样式 */
  h1, h2, h3, h4 {
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    margin-bottom: 20px;
  }

  h1 {
    font-size: 2.5em;
    text-align: center;
    margin-top: 40px;
  }

  p {
    margin-bottom: 15px;
  }

  /* 卡片布局 */
  .cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
  }

  .card {
    background: linear-gradient(135deg, #00008B, #8A2BE2);
    border-radius: 10px;
    box-shadow: 0px 8px 16px rgba(0, 0, 0, 0.5);
    padding: 20px;
    transition: transform 0.3s ease-in-out;
    position: relative;
  }

  .card:hover {
    transform: scale(1.05) rotate(2deg);
  }

  .card img {
    width: 100%;
    border-radius: 8px;
    margin-bottom: 15px;
  }

  .card h4 {
    margin-bottom: 10px;
    color: #7FFF00;
  }

  .card p {
    font-size: 0.95em;
  }

  /* 代码块样式 */
  pre {
    background: #1e1e1e;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    margin-bottom: 20px;
  }

  code {
    color: #7FFF00;
  }

  /* 表格样式 */
  table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
  }

  table, th, td {
    border: 1px solid #7FFF00;
  }

  th, td {
    padding: 10px;
    text-align: left;
  }

  th {
    background: #7FFF00;
    color: #00008B;
  }

  /* 响应式设计 */
  @media (max-width: 768px) {
    h1 {
      font-size: 2em;
    }

    .card {
      padding: 15px;
    }
  }

  @media (max-width: 480px) {
    .container {
      padding: 10px;
    }

    h1 {
      font-size: 1.8em;
    }

    .card h4 {
      font-size: 1em;
    }

    pre {
      font-size: 0.85em;
    }
  }

  /* 链接样式 */
  a {
    color: #7FFF00;
    text-decoration: none;
  }

  a:hover {
    text-decoration: underline;
  }