:root { --bg: #ffffff; --fg: #1c1b1f; --muted: #5f5d66; --accent: #2e6b4f; --line: #e3e1e8; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #141316; --fg: #e6e1e6; --muted: #a9a5ad; --accent: #8fd3b0; --line: #2c2a30; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 42rem; margin: 0 auto; padding: 2.5rem 1rem 4rem; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 .25rem; }
h2 { font-size: 1.2rem; margin: 2rem 0 .5rem; }
p, li { color: var(--fg); }
.muted { color: var(--muted); font-size: .95rem; }
.summary { border-left: 4px solid var(--accent); padding: .25rem 0 .25rem 1rem; margin: 1.5rem 0; }
a { color: var(--accent); }
nav.lang { font-size: .95rem; margin-bottom: 1.5rem; }
nav.lang a, nav.lang strong { margin-right: .75rem; }
ul { padding-left: 1.25rem; }
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); }