:root {
  --bg: #fbfbf9; --fg: #1d1f21; --muted: #5c6166; --line: #e3e3de;
  --code-bg: #f0f0eb; --accent: #1f5f8b;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151719; --fg: #e6e6e3; --muted: #9ba1a6; --line: #2b2f33;
    --code-bg: #1f2327; --accent: #7fb4dc;
  }
}
* { 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: 680px; margin: 0 auto; padding: 56px 16px 80px; }
h1 { font-size: 1.9rem; margin: 0 0 4px; letter-spacing: -0.01em; }
.ua { color: var(--muted); font-size: 0.95rem; margin: 0 0 40px; word-break: break-all; }
h2 { font-size: 1.15rem; margin: 40px 0 8px; }
p, li { margin: 0 0 12px; }
ul { padding-left: 1.2em; margin: 0 0 12px; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.92em; }
code { background: var(--code-bg); padding: 1px 5px; border-radius: 4px; }
pre { background: var(--code-bg); padding: 14px 16px; border-radius: 8px; overflow-x: auto; }
pre code { background: none; padding: 0; }
a { color: var(--accent); }
hr { border: 0; border-top: 1px solid var(--line); margin: 56px 0; }
.lang { font-size: 0.85rem; color: var(--muted); margin-bottom: 32px; }