:root {
  --bg: #ffffff;
  --text: #1f2430;
  --muted: #5b6475;
  --accent: #3b4a6b;
  --line: #dde1e8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161b;
    --text: #e8eaf0;
    --muted: #9aa3b5;
    --accent: #9db4e8;
    --line: #2a2f3a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 42rem; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
h1 { font-size: 2.2rem; margin: 0.5rem 0 0.25rem; color: var(--accent); }
h2 { font-size: 1.2rem; margin: 2rem 0 0.4rem; }
.tagline { font-size: 1.15rem; color: var(--muted); margin-top: 0; }
.meta { color: var(--muted); font-size: 0.9rem; }
a { color: var(--accent); }
ul { padding-left: 1.2rem; }
li { margin: 0.25rem 0; }
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }