/* 基础样式 */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #0074D9, #FF851B);
    color: #333;
    line-height: 1.6;
    padding: 20px;
  }
  
  /* 响应式布局 */
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  }
  
  @media (max-width: 1440px) {
    .container {
      max-width: 1024px;
    }
  }
  
  @media (max-width: 1200px) {
    .container {
      max-width: 768px;
    }
  }
  
  @media (max-width: 768px) {
    .container {
      padding: 15px;
    }
  }
  
  @media (max-width: 480px) {
    body {
      padding: 10px;
    }
  }
  
  /* 标题样式 */
  h1, h2, h3 {
    font-family: 'Inter', sans-serif;
    color: #0074D9;
    margin-bottom: 15px;
  }
  
  h1 {
    font-size: 2.5em;
    text-align: center;
    margin-bottom: 30px;
  }
  
  h2 {
    font-size: 2em;
    margin-top: 20px;
    margin-bottom: 10px;
  }
  
  h3 {
    font-size: 1.5em;
    margin-top: 15px;
    margin-bottom: 10px;
  }
  
  /* 段落样式 */
  p {
    margin-bottom: 15px;
    font-size: 1em;
  }
  
  /* 代码块样式 */
  pre {
    background: #f4f4f4;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 20px;
  }
  
  code {
    font-family: 'Courier New', Courier, monospace;
    color: #d63384;
  }
  
  /* 表格样式 */
  table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
  }
  
  table, th, td {
    border: 1px solid #ddd;
  }
  
  th, td {
    padding: 10px;
    text-align: left;
  }
  
  th {
    background-color: #f2f2f2;
    color: #0074D9;
  }
  
  /* 按钮样式 */
  button {
    background-color: #FF851B;
    color: #fff;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 5px;
    transition: transform 0.3s ease, background-color 0.3s ease;
    font-size: 1em;
  }
  
  button:hover {
    transform: scale(1.1);
    background-color: #e07b1a;
  }
  
  /* 图标样式 */
  .icon {
    width: 24px;
    height: 24px;
    fill: currentColor;
    transition: transform 0.3s ease;
  }
  
  .icon:hover {
    transform: scale(1.2);
  }
  
  /* 图片样式 */
  img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin-bottom: 20px;
  }
  
  /* 提示文本样式 */
  .notice {
    background: #FFEFD5;
    padding: 15px;
    border-left: 5px solid #FF851B;
    margin-bottom: 20px;
    border-radius: 3px;
  }
  
  /* 链接样式 */
  a {
    color: #0074D9;
    text-decoration: none;
    transition: color 0.3s ease;
  }
  
  a:hover {
    color: #FF851B;
  }
  
  /* 加载动画 */
  .loader {
    border: 8px solid #f3f3f3;
    border-top: 8px solid #0074D9;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 2s linear infinite;
    margin: 0 auto;
  }
  
  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }
  
  /* 背景动画 */
  body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,135,27,0.3), transparent);
    animation: aurora-move 15s linear infinite;
    z-index: -1;
  }
  
  @keyframes aurora-move {
    0% { transform: translateX(0) translateY(0); }
    50% { transform: translateX(50px) translateY(-50px); }
    100% { transform: translateX(0) translateY(0); }
  }
  
  /* 高亮类 */
  .highlight {
    color: #FF851B;
    font-weight: bold;
  }
  
  /* 文章示例展示 */
  .example-article {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin-bottom: 30px;
  }
  
  .example-article h2 {
    text-align: center;
    color: #2ECC40;
  }
  
  /* 自适应图片 */
  .responsive-img {
    width: 100%;
    height: auto;
    border-radius: 5px;
  }
  
  /* 网格系统 */
  .grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
  }
  
  /* 情感社区互动效果 */
  .interactive:hover {
    animation: pulse 1s infinite;
  }
  
  @keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
  }