:root {
  --bg: #ffffff;
  --panel: #f0f0f3;
  --line: #e0e1e6;
  --text: #111113;
  --muted: #60646c;
  --link: #1f6fd6;
  --up: #0fb872;
  --down: #e5484d;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0c;
    --panel: #1b1c1e;
    --line: #2e3135;
    --text: #edeef0;
    --muted: #b0b4ba;
    --link: #6aa7ff;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}
main { max-width: 680px; margin: 0 auto; padding: 32px 16px 56px; }
a { color: var(--link); text-underline-offset: 2px; }
h1 { font-size: 1.75rem; line-height: 1.25; margin: 0 0 4px; }
h2 { font-size: 1.15rem; margin: 32px 0 8px; }
p, li { margin: 0 0 10px; }
ul { padding-left: 1.25em; }
.muted { color: var(--muted); }
.small { font-size: 0.9rem; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; font-weight: 700; }
.brand svg { flex: none; }
header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 28px; }
.hero { padding: 28px 0 8px; }
.hero h1 { font-size: 2.4rem; }
.tagline { font-size: 1.2rem; margin: 6px 0 2px; }
.box { background: var(--panel); border-radius: 12px; padding: 16px; margin: 24px 0; }
.box p:last-child { margin-bottom: 0; }
nav.links { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 24px; }
footer { border-top: 1px solid var(--line); margin-top: 40px; padding-top: 16px; }
footer nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }