/* No web fonts, no external resources: system fonts only (SPEC_LEGAL 18). */
:root {
  --bg: #ffffff; --text: #16181d; --muted: #5b6270; --line: #e3e6ec; --accent: #2f6bff;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e1014; --text: #eceef2; --muted: #9aa1ad; --line: #262a33; --accent: #6f98ff; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
header, main, footer { max-width: 760px; margin: 0 auto; padding: 16px; }
header { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; border-bottom: 1px solid var(--line); }
header nav { flex: 1; font-size: 14px; }
.brand { font-weight: 800; font-size: 18px; text-decoration: none; color: var(--text); }
.lang { font-size: 14px; }
a { color: var(--accent); }
h1 { font-size: 28px; line-height: 1.25; }
h2 { font-size: 20px; margin-top: 32px; }
blockquote { margin: 16px 0; padding: 8px 16px; border-left: 3px solid var(--line); color: var(--muted); }
.table { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { border: 1px solid var(--line); padding: 6px 8px; text-align: left; vertical-align: top; }
code { font-size: 90%; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; margin-top: 48px; }