:root { --fg: #222; --muted: #666; --bg: #fff; --rule: #ddd; --code-bg: #f5f5f5; --accent: #0b5cad; }
@media (prefers-color-scheme: dark) {
  :root { --fg: #e6e6e6; --muted: #aaa; --bg: #161616; --rule: #333; --code-bg: #222; --accent: #6aa9f0; }
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif; color: var(--fg); background: var(--bg); }
header { display: flex; flex-wrap: wrap; gap: 1rem 2rem; align-items: baseline; padding: 0.9rem 1rem; border-bottom: 1px solid var(--rule); }
header .brand { font-weight: 700; font-size: 1.25rem; color: var(--fg); text-decoration: none; letter-spacing: 0.05em; }
header nav a { margin-right: 1.25rem; }
main { max-width: 60rem; margin: 0 auto; padding: 1rem; }
footer { max-width: 60rem; margin: 2rem auto; padding: 1rem; border-top: 1px solid var(--rule); color: var(--muted); font-size: 0.875rem; }
a { color: var(--accent); }
h1.page-title { font-size: 2rem; margin: 0.5rem 0 1.5rem; padding-bottom: 0.3rem; border-bottom: 1px solid var(--rule); overflow-wrap: anywhere; }
h1, h2, h3 { line-height: 1.25; }
code { background: var(--code-bg); padding: 0.1em 0.3em; border-radius: 3px; font-size: 0.9em; }
pre { background: var(--code-bg); padding: 0.75rem; overflow-x: auto; border-radius: 4px; }
pre code { padding: 0; background: none; }
table { border-collapse: collapse; margin: 1rem 0; display: block; overflow-x: auto; }
th, td { border: 1px solid var(--rule); padding: 0.35rem 0.6rem; vertical-align: top; }
blockquote { margin: 1rem 0; padding: 0.5rem 1rem; border-left: 4px solid var(--accent); background: var(--code-bg); }
img { max-width: 100%; height: auto; }