:root {
  color-scheme: light dark;
  --bg: #fdfbff;
  --fg: #1b1b1f;
  --muted: #5d5e66;
  --accent: #4f5ba8;
  --card: #f1effa;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131318;
    --fg: #e4e1e9;
    --muted: #a9a8b3;
    --accent: #b8c3ff;
    --card: #1f1f26;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 1.0625rem/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 38rem; margin: 0 auto; padding: 3rem 1.25rem 4rem; }
h1 { font-size: 2.25rem; line-height: 1.2; margin: 0 0 0.5rem; }
h2 { font-size: 1.375rem; margin: 2.5rem 0 0.5rem; }
p { margin: 0 0 1rem; }
.muted { color: var(--muted); }
a { color: var(--accent); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.card { background: var(--card); border-radius: 1rem; padding: 1.25rem; margin: 1.5rem 0; }
code.share {
  display: block;
  overflow-wrap: anywhere;
  font: 0.9375rem/1.5 ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  margin: 0 0 1rem;
}
button {
  font: inherit;
  font-weight: 600;
  min-height: 48px;
  padding: 0 1.5rem;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: var(--bg);
  cursor: pointer;
}
footer { margin-top: 3rem; font-size: 0.875rem; color: var(--muted); }