:root {
  --bg: #ffffff;
  --ink: #15181e;
  --ink-2: #444b59;
  --line: #d5dae3;
  --accent: #1f47c7;
  --code-bg: #f2f4f8;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10141b;
    --ink: #e8ecf3;
    --ink-2: #b4bccb;
    --line: #2f3746;
    --accent: #9db8ff;
    --code-bg: #1a2029;
  }
}
* { box-sizing: border-box; }
html { font: 18px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; background: var(--bg); color: var(--ink); }
body { margin: 0; }
main, footer { max-width: 40rem; margin: 0 auto; padding: 0 1rem; }
main { padding-top: 3rem; padding-bottom: 2rem; }
.brand { font-weight: 700; color: var(--accent); margin: 0 0 1rem; }
.brand a { text-decoration: none; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 1rem; }
h2 { font-size: 1.25rem; margin: 2rem 0 .5rem; }
.lede { font-size: 1.15rem; color: var(--ink-2); }
a { color: var(--accent); }
a:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9rem; }
pre { background: var(--code-bg); border: 1px solid var(--line); padding: .75rem 1rem; white-space: pre-wrap; overflow-wrap: anywhere; }
footer { border-top: 1px solid var(--line); padding-top: 1rem; padding-bottom: 2rem; font-size: .9rem; color: var(--ink-2); }