:root {
  --bg: #f7f5ff;
  --card: #ffffff;
  --ink: #1d1640;
  --muted: #5b5480;
  --line: #e2ddf5;
  --brand: #ff5a1f;
  --link: #5a33d6;
  --fill: #fff2a8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #120a3a;
    --card: #1f1557;
    --ink: #f4f1ff;
    --muted: #b9b3e6;
    --line: #362a7a;
    --link: #ffd45c;
    --fill: #6b5600;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
header { background: var(--brand); color: #fff; padding: 20px 16px; }
header a { color: #fff; text-decoration: none; font-weight: 800; font-size: 22px; letter-spacing: .5px; }
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
h1 { font-size: 34px; line-height: 1.15; margin: 0 0 8px; }
h2 { font-size: 21px; margin: 36px 0 8px; }
p, li { color: var(--ink); }
.lede { color: var(--muted); font-size: 19px; margin-top: 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px; margin: 24px 0; }
a { color: var(--link); }
mark.fill { background: var(--fill); color: inherit; padding: 0 4px; border-radius: 4px; }
footer { color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); margin-top: 48px; padding-top: 16px; }
.button { display: inline-block; background: var(--brand); color: #fff; font-weight: 700; padding: 12px 20px; border-radius: 999px; text-decoration: none; }
.button mark.fill { background: #fff2a8; color: #1d1640; }