/* 基础样式 */
body {
  font-family: 'Georgia', serif;
  line-height: 1.6;
  color: #333;
  background-color: #f8f9fa;
}

/* 标题样式 */
h1, h2, h3 {
  color: #2c3e50;
  margin-top: 1.5em;
  margin-bottom: 0.5em;
}

h1 {
  border-bottom: 2px solid #3498db;
  padding-bottom: 0.3em;
}

/* 导航栏 */
.navbar {
  background-color: #2c3e50;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar a {
  color: #ecf0f1;
  font-weight: 500;
}

.navbar a:hover {
  color: #3498db;
}

/* 内容区域 */
.main-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 2em;
  background-color: white;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

/* 代码块 */
pre {
  background-color: #f8f9fa;
  padding: 1em;
  border-radius: 4px;
  border: 1px solid #ddd;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .main-content {
    padding: 1em;
  }
  
  h1 {
    font-size: 1.8em;
  }
}