:root {
  --bg: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --accent: #6d28d9;
  --card: #f5f3ff;
  --rule: #e5e5ea;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111014;
    --text: #f2f2f7;
    --muted: #a1a1aa;
    --accent: #c4b5fd;
    --card: #1e1b2e;
    --rule: #2c2c34;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
header img { width: 48px; height: 48px; border-radius: 11px; }
header a { color: var(--text); text-decoration: none; font-weight: 600; font-size: 20px; }
nav { margin-left: auto; display: flex; gap: 16px; font-size: 15px; }
nav a { color: var(--muted); text-decoration: none; }
nav a[aria-current="page"] { color: var(--accent); }
h1 { font-size: 34px; line-height: 1.2; margin: 8px 0 4px; }
h2 { font-size: 22px; margin: 36px 0 8px; }
h3 { font-size: 18px; margin: 24px 0 4px; }
a { color: var(--accent); }
.updated { color: var(--muted); font-size: 15px; margin: 0 0 24px; }
.summary { background: var(--card); border-radius: 14px; padding: 16px 20px; margin: 16px 0 8px; }
.summary p { margin: 0; }
.hero { text-align: center; padding: 48px 0 24px; }
.hero img { width: 128px; height: 128px; border-radius: 28px; }
.hero p { color: var(--muted); font-size: 20px; margin: 8px 0 24px; }
.links { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; }
footer { border-top: 1px solid var(--rule); margin-top: 48px; padding-top: 16px; color: var(--muted); font-size: 14px; }
@media (max-width: 480px) {
  nav { gap: 12px; font-size: 14px; }
  h1 { font-size: 28px; }
}