:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body {
  margin: 0 auto; max-width: 42rem; padding: 2.5rem 1.25rem 4rem;
  font: 1.05rem/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: #1a1a1a; background: #fdfdfd;
}
@media (prefers-color-scheme: dark) { body { color: #e6e6e6; background: #16181a; } }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 .4rem; }
h2 { font-size: 1.3rem; margin: 2.2rem 0 .6rem; }
h3 { font-size: 1.05rem; margin: 1.6rem 0 .4rem; }
p, li { max-width: 38rem; }
ul { padding-left: 1.25rem; }
li { margin: .35rem 0; }
a { color: #0a58ca; }
@media (prefers-color-scheme: dark) { a { color: #8ab4f8; } }
a:focus-visible { outline: 3px solid currentColor; outline-offset: 2px; }
.tagline { font-size: 1.05rem; margin-top: 0; }
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid #8884; font-size: .95rem; }