:root {
  color-scheme: light;
  --paper: #f7f5ef;
  --ink: #263033;
  --muted: #657274;
  --accent: #718a83;
  --line: #dfe4df;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;
  line-height: 1.65;
}
.wrap { width: min(720px, calc(100% - 40px)); margin: 0 auto; }
header { padding: 52px 0 34px; border-bottom: 1px solid var(--line); }
.brand { letter-spacing: .18em; font-size: .78rem; font-weight: 600; color: var(--muted); }
main { padding: 52px 0 80px; }
h1 { margin: 0 0 10px; font-size: clamp(2rem, 7vw, 3.2rem); line-height: 1.08; letter-spacing: -.02em; }
h2 { margin: 42px 0 12px; font-size: 1.1rem; line-height: 1.3; }
p, li { font-size: 1rem; }
.updated { margin: 0 0 38px; color: var(--muted); font-size: .9rem; }
a { color: var(--accent); }
footer { padding: 28px 0 52px; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.link { display: inline-block; margin-top: 24px; font-size: 1.05rem; }
@media (max-width: 520px) {
  .wrap { width: min(100% - 28px, 720px); }
  header { padding-top: 32px; }
  main { padding-top: 36px; }
}