:root {
  --bg: #f5f5f5;
  --card: #ffffff;
  --text: #111111;
  --muted: #6b6b6b;
  --border: #e5e5e5;
  --primary: #111111;
  --primary-text: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0a;
    --card: #141414;
    --text: #f5f5f5;
    --muted: #a3a3a3;
    --border: #2a2a2a;
    --primary: #ffffff;
    --primary-text: #000000;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 20px 16px 48px; }
header.site { display: flex; align-items: center; gap: 12px; padding: 8px 0 20px; }
header.site img { width: 40px; height: 40px; border-radius: 10px; }
header.site a.brand { font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; }
nav.site { margin-left: auto; display: flex; gap: 14px; flex-wrap: wrap; font-size: 0.9rem; }
a { color: var(--text); text-decoration-thickness: 1px; text-underline-offset: 3px; }
h1 { font-size: 1.75rem; line-height: 1.25; margin: 8px 0 8px; }
h2 { font-size: 1.2rem; margin: 32px 0 8px; }
p, li { overflow-wrap: anywhere; }
ul { padding-left: 1.2rem; }
li { margin: 4px 0; }
.muted { color: var(--muted); font-size: 0.9rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 4px 16px 16px; margin: 16px 0; }
.hero { padding: 16px 0 8px; }
.hero p.lead { font-size: 1.1rem; }
footer { margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 0.85rem; color: var(--muted); }
footer a { color: var(--muted); }
.card h2:first-child { margin-top: 16px; }