:root {
  --text: #10231a;
  --muted: #4b5a52;
  --bg: #ffffff;
  --card: #f2faf5;
  --border: #d9eadf;
  --link: #15803d;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #eaf5ee;
    --muted: #a7b8ae;
    --bg: #0b1410;
    --card: #12201a;
    --border: #213429;
    --link: #4ade80;
  }
}
* { 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; }
a { color: var(--link); }
.brand { margin: 0 0 24px; font-weight: 800; font-size: 18px; }
.brand a { color: #22c55e; text-decoration: none; }
h1 { font-size: 34px; line-height: 1.2; margin: 0 0 4px; }
h2 { font-size: 22px; margin: 36px 0 8px; }
h3 { font-size: 17px; margin: 20px 0 4px; }
.meta { color: var(--muted); margin: 0 0 24px; }
.summary { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 4px 20px; }
.summary h2 { margin-top: 16px; }
ul { padding-left: 22px; }
li { margin: 6px 0; }
.links { display: flex; flex-wrap: wrap; gap: 16px; padding: 0; list-style: none; }