body {
  max-width: 800px;
  margin: 40px auto;
  padding: 0 10px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #222;
  background: #fff;
}

h1, h2, h3 {
  line-height: 1.2;
}

hr {
  border: 0;
  border-top: 1px solid #ccc;
  margin: 20px 0;
}

a {
  color: #1e90ff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.back-link {
  margin-bottom: 20px;
  display: inline-block;
}

.meta {
  font-family: monospace;
  color: #666;
}

.post-list {
  list-style-type: none;
  padding-left: 0;
}

.post-item {
  margin-bottom: 20px;
}

.post-date {
  font-family: monospace;
  color: #666;
  margin-right: 10px;
}

pre {
  background: #f4f4f4;
  padding: 15px;
  overflow-x: auto;
  font-family: monospace;
  border-left: 4px solid #1e90ff;
}

code {
  font-family: monospace;
  background: #f4f4f4;
  padding: 2px 5px;
  border-radius: 3px;
}

@media (prefers-color-scheme: dark) {
  body {
    color: #eaeaea;
    background: #121212;
  }

  a {
    color: #1e90ff;
  }

  hr {
    border-top: 1px solid #444;
  }

  .meta, 
  .post-date {
    color: #aaa;
  }

  pre {
    background: #1e1e1e;
  }

  code {
    background: #2a2a2a;
  }
}