:root {
  --bg: #f6f3ec;
  --surface: #ffffff;
  --ink: #1d2a2e;
  --muted: #5a6a6e;
  --accent: #0b3b45;
  --link: #0f6b7a;
  --rule: #e2ddd2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1f24;
    --surface: #10292f;
    --ink: #e8efee;
    --muted: #a3b4b6;
    --accent: #7fd1c4;
    --link: #8fdbe6;
    --rule: #22424a;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--link); }
header.site {
  display: flex; align-items: center; gap: 12px;
  max-width: 760px; margin: 0 auto; padding: 20px 16px 0;
}
header.site a.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 20px; }
header.site img { width: 36px; height: 36px; border-radius: 9px; }
main { max-width: 760px; margin: 0 auto; padding: 8px 16px 48px; }
h1 { font-size: 32px; line-height: 1.2; margin: 28px 0 8px; color: var(--accent); }
h2 { font-size: 21px; margin: 32px 0 6px; }
p, li { margin: 0 0 12px; }
ul { padding-left: 22px; }
.meta { color: var(--muted); font-size: 15px; margin-bottom: 24px; }
.summary { background: var(--surface); border: 1px solid var(--rule); border-radius: 14px; padding: 16px 20px; margin: 20px 0; }
.summary ul { margin: 0; }
.hero { text-align: center; padding: 48px 0 24px; }
.hero img { width: 128px; height: 128px; border-radius: 28px; box-shadow: 0 8px 24px rgba(0,0,0,.18); }
.hero h1 { font-size: 40px; margin-top: 20px; }
.hero p { font-size: 19px; color: var(--muted); }
footer.site { max-width: 760px; margin: 0 auto; padding: 20px 16px 40px; border-top: 1px solid var(--rule); color: var(--muted); font-size: 15px; }
footer.site a { margin-right: 16px; }