:root {
  --ink: #1c1c1e;
  --muted: #6b6b70;
  --bg: #fdfdfb;
  --rule: #e2e2dd;
  --link: #1a6b52;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #ececef;
    --muted: #9a9aa0;
    --bg: #16161a;
    --rule: #2c2c32;
    --link: #6cc3a1;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
  max-width: 36rem;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

h1 {
  font-size: 1.7rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 0 0 0.4rem;
}

h2 {
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  margin: 2.4rem 0 0.6rem;
}

p, li { margin: 0 0 1rem; }
ul { padding-left: 1.2rem; }
li { margin-bottom: 0.6rem; }

a { color: var(--link); }
a:hover { text-decoration: none; }

.dateline {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2.5rem;
}

.lede { font-size: 1.1rem; }

nav {
  margin-top: 4rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--rule);
  font-size: 0.9rem;
  color: var(--muted);
}

nav a { margin-right: 1.2rem; }