:root {
  --cream: #F8F4EC;
  --paper: #FFFDF8;
  --teal: #168C85;
  --ink: #1F2E2B;
  --muted: #5E6E66;
  --line: #E8E3D9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --cream: #111A18;
    --paper: #18231F;
    --teal: #4FC1B8;
    --ink: #E9F0EC;
    --muted: #A2B2AA;
    --line: #2A3833;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 24px 16px 64px; }
header { display: flex; justify-content: space-between; align-items: center; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; font-size: 18px; color: var(--ink); text-decoration: none; }
nav, .eyebrow { font-size: 14px; color: var(--muted); }
a { color: var(--teal); }
article { background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 24px 20px; margin-top: 24px; }
h1 { font-size: 28px; line-height: 1.3; margin: 4px 0 12px; }
h2 { font-size: 19px; margin: 28px 0 8px; }
h3 { font-size: 16px; margin: 22px 0 4px; }
.lead { color: var(--muted); }
ul { padding-left: 20px; }
li { margin-bottom: 8px; }
.eyebrow { margin: 0; }