:root {
  --bg: #f6f7f9;
  --fg: #16202a;
  --muted: #5b6874;
  --line: #dde3e8;
  --accent: #0b6e86;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f151b;
    --fg: #e3eaf0;
    --muted: #94a3af;
    --line: #26323c;
    --accent: #52c4db;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main {
  max-width: 680px;
  margin: 0 auto;
  padding: 56px 20px 72px;
}
.eyebrow {
  font: 12px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 12px;
}
h1 { font-size: 30px; line-height: 1.15; margin: 0 0 16px; text-wrap: balance; }
h2 { font-size: 18px; margin: 36px 0 8px; }
p, li { color: var(--fg); }
.muted { color: var(--muted); }
a { color: var(--accent); }
ul { padding-left: 20px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }
footer { margin-top: 48px; font-size: 14px; color: var(--muted); }