:root {
  color-scheme: light;
  --ink: #12141a;
  --muted: #5c6370;
  --line: #e6e8ee;
  --link: #1a5fd0;
  --paper: #f7f8fb;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
}
main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 3.5rem 1.25rem 4rem;
}
.brand {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 0.75rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 0.5rem; }
p { margin: 0.6rem 0; }
.lead { font-size: 1.05rem; }
.meta { color: var(--muted); font-size: 0.92rem; }
ul { margin: 0.4rem 0 0; padding-left: 1.2rem; }
a { color: var(--link); }
.nav {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
}
.nav li { margin: 0.35rem 0; }
.links {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}