:root {
  --bg: #ffffff;
  --text: #1d1d1f;
  --muted: #5f6368;
  --link: #0a58ca;
  --rule: #e3e3e6;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141416;
    --text: #e8e8ea;
    --muted: #a0a0a8;
    --link: #7cb4ff;
    --rule: #2c2c31;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 42rem;
  margin: 0 auto;
  padding: 2.5rem 1rem 3rem;
}

h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 0.5rem; }
h2 { font-size: 1.2rem; margin: 2rem 0 0.5rem; }
p, ul { margin: 0 0 1rem; }
ul { padding-left: 1.25rem; }
li { margin-bottom: 0.35rem; }

a { color: var(--link); text-underline-offset: 0.15em; }

.lede { color: var(--muted); font-size: 1.05rem; }
.meta { color: var(--muted); font-size: 0.9rem; }

nav { font-size: 0.95rem; margin-bottom: 2rem; }

footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9rem;
}