/* 基础重置 */
* { box-sizing: border-box; margin: 0; }
body {
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto;
  padding: 1rem;
  color: #333;
}

/* 文章卡片 */
.article-card {
  border: 1px solid #eee;
  border-radius: 8px;
  padding: 1.5rem;
  margin: 1rem 0;
  transition: transform 0.2s;
}
.article-card:hover {
  transform: translateY(-3px);
}

/* Markdown 内容渲染 */
.post-content {
  margin: 2rem 0;
}
.post-content h1 { font-size: 2rem; }
.post-content img { max-width: 100%; }
.post-content pre {
  background: #f8f8f8;
  padding: 1rem;
  overflow-x: auto;
}