:root {
  --bg: #f6f5ef;
  --fg: #222;
  --muted: #6b6b6b;
  --line: #e3e1d2;
  --link: #1e6fb0;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #121212; --fg: #ddd; --muted: #8a8a8a; --line: #2a2a2a; --link: #5aa9e6; }
}

body { margin: 0; background: var(--bg); color: var(--fg); font: 15px/1.5 system-ui, sans-serif; }
a { color: var(--link); }
.about { max-width: 720px; margin: 0 auto; padding: 24px 16px 48px; }
.back { display: inline-block; margin-bottom: 16px; text-decoration: none; }
h1 { font-size: 26px; margin: 0 0 8px; }
.lead { margin: 0 0 24px; }
section { border-top: 1px solid var(--line); padding-top: 16px; margin-top: 16px; }
h2 { font-size: 18px; margin: 0 0 4px; }
.intro { color: var(--muted); margin: 0 0 8px; }
ul { list-style: none; margin: 0; padding: 0; }
li { padding: 6px 0; }
.meta, .note { font-size: 13px; color: var(--muted); }
.files { margin-top: 32px; font-size: 13px; color: var(--muted); }