/* 基础样式 */
  body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: radial-gradient(circle, rgb(0, 34, 102), transparent);
    color: #333;
    line-height: 1.6;
  }

  h1, h2, h3, h4 {
    color: #FFC107; /* 明黄色 */
    margin-bottom: 20px;
    font-weight: 700;
  }

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

  h2 {
    font-size: 2em;
  }

  h3 {
    font-size: 1.75em;
  }

  h4 {
    font-size: 1.5em;
  }

  p {
    font-size: 1em;
    margin-bottom: 15px;
  }

  ul, ol {
    margin-bottom: 20px;
    padding-left: 20px;
  }

  li {
    margin-bottom: 10px;
  }

  a {
    color: #0B4E8B; /* 深蓝色 */
    text-decoration: none;
  }

  a:hover {
    text-decoration: underline;
  }

  /* 按钮样式 */
  .button {
    background: linear-gradient(135deg, #FFC107, #FFA726);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.3s ease, background-color 0.3s ease;
  }

  .button:hover {
    transform: scale(1.1);
    background: linear-gradient(135deg, #FFA726, #FF9800);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
  }

  /* 容器与网格系统 */
  .container {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
    padding: 40px;
    max-width: 1200px;
    margin: 0 auto;
  }

  .module {
    grid-column: span 4;
    background-color: rgba(245, 245, 245, 0.9);
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .module:hover {
    transform: rotate(2deg) scale(1.05);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  }

  /* 图标与图像 */
  .icon {
    font-size: 24px;
    color: #FFC107;
    margin-right: 10px;
  }

  .image {
    width: 100%;
    height: auto;
    border-radius: 5px;
    margin-bottom: 20px;
  }

  /* 代码块样式 */
  pre {
    background-color: #f5f5f5;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
  }

  code {
    color: #D32F2F;
    font-size: 0.95em;
  }

  /* 数据可视化图表 */
  .bar-chart {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    height: 200px;
    margin-bottom: 20px;
  }

  .bar {
    width: 20%;
    background-color: #0B4E8B;
    border-radius: 3px 3px 0 0;
    transition: height 0.3s ease, background-color 0.3s ease;
  }

  .bar:hover {
    background-color: #1565C0;
  }

  /* 动画与交互动效 */
  @keyframes aurora-move {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }

  .animated-background {
    background: radial-gradient(circle, rgb(255, 87, 34), transparent);
    animation: aurora-move 15s linear infinite;
  }

  /* 响应式设计 */
  @media (max-width: 1440px) {
    .container {
      padding: 30px;
    }
  }

  @media (max-width: 1200px) {
    .module {
      grid-column: span 6;
    }
  }

  @media (max-width: 1024px) {
    .module {
      grid-column: span 6;
    }
  }

  @media (max-width: 768px) {
    .module {
      grid-column: span 12;
    }
  }

  @media (max-width: 480px) {
    h1 {
      font-size: 2em;
    }
    h2 {
      font-size: 1.75em;
    }
    .button {
      padding: 8px 16px;
      font-size: 0.9em;
    }
  }

  @media (max-width: 320px) {
    .container {
      padding: 20px;
    }
    h1 {
      font-size: 1.8em;
    }
    h2 {
      font-size: 1.5em;
    }
    .button {
      padding: 6px 12px;
      font-size: 0.8em;
    }
  }

  /* 光标悬停效果 */
  .hover-effect:hover {
    filter: brightness(1.1);
    transform: scale(1.02);
  }

  /* 分隔线 */
  .divider {
    height: 2px;
    background: linear-gradient(90deg, #0B4E8B, #FFC107);
    margin: 40px 0;
    border: none;
  }

  /* 提示样式 */
  .note {
    background-color: rgba(255, 255, 255, 0.8);
    padding: 15px;
    border-left: 5px solid #FFC107;
    margin-bottom: 20px;
    border-radius: 3px;
  }

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

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

  th {
    background-color: #0B4E8B;
    color: white;
  }

  td {
    background-color: rgba(245, 245, 245, 0.9);
  }