@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");
:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #334155;
  --heading: #0f172a;
  --muted: #64748b;
  --link: #047857;
  --border: #e2e8f0;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --card: #1e293b;
    --text: #cbd5e1;
    --heading: #f8fafc;
    --muted: #94a3b8;
    --link: #34d399;
    --border: #334155;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 "Inter", ui-sans-serif, system-ui, sans-serif;
}
main {
  max-width: 720px;
  margin: 32px auto;
  padding: 32px 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
}
@media (max-width: 760px) {
  main { margin: 0; border: 0; border-radius: 0; padding: 24px 16px; }
}
h1, h2 { color: var(--heading); line-height: 1.25; }
h1 { font-size: 1.9rem; margin: 0.5rem 0 0.25rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 0.5rem; }
ul { padding-left: 1.25rem; }
li { margin: 0.35rem 0; }
a { color: var(--link); }
.updated, .back { color: var(--muted); font-size: 0.9rem; }
.back a { text-decoration: none; }
.links { margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--border); }