body {
  margin: 0;
  font-family: Arial, sans-serif;
  color: #222;
  background: #fff;
}

.site-header {
  padding: 20px 0;
  border-bottom: 1px solid #eee;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 24px;
}

.nav a {
  text-decoration: none;
  color: #222;
  font-weight: 500;
}

.nav a:hover {
  text-decoration: underline;
}

.content {
  max-width: 720px;
  margin: 40px auto;
  padding: 0 20px;
}

h1, h2 {
  text-align: center;
  font-weight: 600;
}

article h1 {
  margin-bottom: 24px;
}

p, li {
  line-height: 1.7;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 24px auto;
}

pre {
  overflow-x: auto;
  padding: 16px;
  background: #f5f5f5;
  border-radius: 6px;
}

code {
  font-family: monospace;
}

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

.post-list li {
  margin: 12px 0;
  text-align: center;
}

.codeblock-with-filename {
  margin: 1.5rem 0;
  border: 1px solid #30363d;
  border-radius: 0.5rem;
  overflow: hidden;
  background: #0d1117;
}

.codeblock-filename {
  padding: 0.5rem 0.75rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.85rem;
  color: #c9d1d9;
  background: #161b22;
  border-bottom: 1px solid #30363d;
}

.codeblock-with-filename .highlight {
  margin: 0;
}

.codeblock-with-filename pre {
  margin: 0;
  border-radius: 0;
}