:root {
  color-scheme: light dark;
  --text: #1c1c1e;
  --muted: #6c6c70;
  --bg: #ffffff;
  --link: #5b3fd6;
  --line: #e5e5ea;
}
@media (prefers-color-scheme: dark) {
  :root { --text: #f2f2f7; --muted: #a1a1a6; --bg: #000000; --link: #a594ff; --line: #2c2c2e; }
}
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
main { max-width: 640px; margin: 0 auto; padding: 48px 16px 64px; }
header { max-width: 640px; margin: 0 auto; padding: 24px 16px 0; }
footer { max-width: 640px; margin: 0 auto; padding: 24px 16px 48px; border-top: 1px solid var(--line); color: var(--muted); font-size: 15px; }
footer a { margin-right: 16px; }
.wordmark { font-size: 20px; font-weight: 700; color: var(--text); text-decoration: none; }
h1 { font-size: 28px; margin: 0 0 4px; }
h2 { font-size: 20px; margin: 32px 0 8px; }
.hero { font-size: 40px; line-height: 1.15; margin: 32px 0 16px; }
.lede { font-size: 20px; color: var(--muted); }
.muted { color: var(--muted); }
a { color: var(--link); }
li { margin: 6px 0; }