/* 基础样式 */
  body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1A237E, #0D47A1);
    color: #BDBDBD;
    line-height: 1.6;
  }

  h1, h2, h3, h4 {
    color: #8CFFFF;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
  }

  p {
    margin-bottom: 1em;
  }

  pre, code {
    background: rgba(255, 255, 255, 0.1);
    padding: 10px;
    border-radius: 5px;
    font-family: 'Courier New', Courier, monospace;
    overflow-x: auto;
  }

  table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1em;
  }

  th, td {
    border: 1px solid #BDBDBD;
    padding: 10px;
    text-align: left;
  }

  th {
    background: #0D47A1;
  }

  a {
    color: #8CFFFF;
    text-decoration: none;
    transition: color 0.3s ease;
  }

  a:hover {
    color: #AB47BC;
  }

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

  .grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
  }

  .grid-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 10px;
    transition: transform 0.3s ease;
  }

  .grid-item:hover {
    transform: scale(1.05);
  }

  img {
    width: 100%;
    height: auto;
    border-radius: 10px;
  }

  /* 按钮 */
  .btn {
    display: inline-block;
    padding: 10px 20px;
    background: #8CFFFF;
    color: #1A237E;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease;
    text-decoration: none;
  }

  .btn:hover {
    background: #AB47BC;
  }

  /* 响应式设计 */
  @media (max-width: 1440px) {
    .container {
      width: 95%;
    }
  }

  @media (max-width: 1200px) {
    h1 {
      font-size: 2em;
    }
  }

  @media (max-width: 1024px) {
    .grid-container {
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
  }

  @media (max-width: 768px) {
    h1 {
      font-size: 1.8em;
    }

    .btn {
      padding: 8px 16px;
    }
  }

  @media (max-width: 480px) {
    h1 {
      font-size: 1.5em;
    }

    pre, code {
      font-size: 0.9em;
    }
  }

  @media (max-width: 320px) {
    h1 {
      font-size: 1.2em;
    }

    .btn {
      padding: 6px 12px;
    }
  }