:root {
  --ink: #1a1d21;
  --muted: #5b6570;
  --line: #e3e6ea;
  --bg: #ffffff;
  --accent: #1f4b3f;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 46rem; margin: 0 auto; padding: 3.5rem 1.5rem 5rem; }
header { border-bottom: 1px solid var(--line); padding-bottom: 1.5rem; margin-bottom: 2.5rem; }
.brand { font-size: 1.05rem; font-weight: 600; letter-spacing: .01em; color: var(--accent); text-decoration: none; }
nav { margin-top: .75rem; font-size: .9rem; }
nav a { color: var(--muted); text-decoration: none; margin-right: 1.25rem; }
nav a:hover { color: var(--ink); }
h1 { font-size: 1.9rem; line-height: 1.25; margin: 0 0 .75rem; letter-spacing: -.01em; }
h2 { font-size: 1.1rem; margin: 2.25rem 0 .5rem; }
p, li { color: #2c3238; }
.lede { font-size: 1.1rem; color: var(--muted); margin-bottom: 2rem; }
.meta { font-size: .85rem; color: var(--muted); }
ul { padding-left: 1.15rem; }
li { margin-bottom: .35rem; }
footer { border-top: 1px solid var(--line); margin-top: 4rem; padding-top: 1.5rem; font-size: .85rem; color: var(--muted); }
footer a { color: var(--muted); }
code { background: #f4f6f8; padding: .1em .35em; border-radius: 3px; font-size: .9em; }
@media (prefers-color-scheme: dark) {
  :root { --ink: #e8eaed; --muted: #9aa4ae; --line: #2a2f35; --bg: #14171a; --accent: #7fbfa8; }
  p, li { color: #d3d8dd; }
  code { background: #21262b; }
}