:root {
  --bg: #fbfaf8; --surface: #ffffff; --ink: #1d1f23; --ink-2: #4a4f57; --line: #e4e1dc; --accent: #2f6f5e;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #141518; --surface: #1c1e22; --ink: #ecebe8; --ink-2: #a9adb4; --line: #30333a; --accent: #7cc3ae; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 40px 16px 64px; }
header.site { border-bottom: 1px solid var(--line); background: var(--surface); }
header.site div { max-width: 720px; margin: 0 auto; padding: 14px 16px; display: flex; gap: 20px; flex-wrap: wrap; align-items: baseline; }
header.site b { margin-right: auto; }
header.site a { font-size: 15px; }
@media (max-width: 480px) { header.site div { gap: 4px 20px; } header.site b { flex-basis: 100%; } }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 36px 0 8px; }
h3 { font-size: 16px; margin: 20px 0 4px; }
p, li { color: var(--ink); }
.muted { color: var(--ink-2); }
a { color: var(--accent); }
ul, ol { padding-left: 22px; }
li { margin: 4px 0; }
.box { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px 20px; margin: 20px 0; }
.box p:first-child, .box h3:first-child { margin-top: 0; }
.box p:last-child { margin-bottom: 0; }
code { font-size: 14px; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 14px; color: var(--ink-2); }