:root {
  --bg: #fafafa;
  --fg: #111;
  --muted: #555;
  --code-bg: #f0f0f0;
  --link: #ff6600;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f0f;
    --fg: #eee;
    --muted: #999;
    --code-bg: #1a1a1a;
    --link: #ff8a3d;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 4rem 1.25rem 3rem;
}

.title {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1rem;
  margin: 0 0 0.5rem;
}

.tag {
  color: var(--muted);
  margin: 0 0 3rem;
}

section { margin-bottom: 3rem; }

h2 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

p { margin: 0 0 0.5rem; }

.note {
  color: var(--muted);
  font-size: 0.875rem;
  margin: 0 0 1.25rem;
}

pre {
  background: var(--code-bg);
  padding: 0.75rem 1rem;
  border-radius: 4px;
  overflow-x: auto;
  margin: 0 0 1.25rem;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.875rem;
  line-height: 1.55;
}

a {
  color: var(--link);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

footer {
  color: var(--muted);
  font-size: 0.875rem;
  margin-top: 3rem;
}