* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #1a1a1a;
  background: #fafafa;
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}
header h1 { font-size: 1.4rem; margin: 0 0 0.5rem 0; }
header h1 a { color: inherit; text-decoration: none; }
header nav a { margin-right: 1rem; font-size: 0.9rem; }
nav a { color: #555; text-decoration: none; }
nav a:hover { color: #000; text-decoration: underline; }
main { margin: 2rem 0; }
.intro p { color: #555; }
.post-list { list-style: none; padding: 0; }
.post-list li {
  display: flex;
  gap: 1rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid #eee;
}
.post-list time {
  color: #888;
  font-variant-numeric: tabular-nums;
  font-size: 0.85rem;
  min-width: 6.5rem;
}
.post-list a { color: #0044aa; text-decoration: none; }
.post-list a:hover { text-decoration: underline; }
article h2 { margin-top: 0; font-size: 1.5rem; }
article .meta { color: #888; font-size: 0.85rem; }
article .content h3 { font-size: 1.1rem; margin-top: 1.5rem; }
article .content pre {
  background: #f0f0f0;
  padding: 0.8rem;
  overflow-x: auto;
  font-size: 0.85rem;
  border-radius: 3px;
}
article .content code {
  font-family: 'SF Mono', Menlo, Consolas, monospace;
  background: #f0f0f0;
  padding: 0.1rem 0.3rem;
  border-radius: 2px;
  font-size: 0.9rem;
}
article .content pre code { background: none; padding: 0; }
article .content blockquote {
  border-left: 3px solid #ccc;
  margin-left: 0;
  padding-left: 1rem;
  color: #555;
}
footer {
  margin-top: 4rem;
  padding-top: 1rem;
  border-top: 1px solid #eee;
  color: #888;
  font-size: 0.85rem;
}