:root {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #202421;
  background: #f7f8f4;
  line-height: 1.65;
  color-scheme: light dark;
}

* { box-sizing: border-box; }
body { margin: 0; }
main, header, footer { max-width: 760px; margin: auto; padding: 24px; }
header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
nav { display: flex; flex-wrap: wrap; gap: 16px; }
a { color: #5851cc; text-underline-offset: 4px; overflow-wrap: anywhere; }
a:focus-visible, summary:focus-visible { outline: 3px solid currentColor; outline-offset: 4px; }
nav a[aria-current="page"] { font-weight: 650; text-decoration-thickness: 2px; }
h1 { font-size: clamp(2rem, 6vw, 3rem); line-height: 1.15; letter-spacing: -.04em; text-wrap: balance; }
h2 { font-size: 1.2rem; margin-top: 32px; line-height: 1.4; }
p, ul { margin-block: 12px; }
li { margin-block: 8px; }
.brand { font-weight: 650; text-decoration: none; }
.meta { color: #5e6661; font-size: .9rem; }
.summary { border: 1px solid #e1e4df; background: #fff; border-radius: 20px; padding: 20px; margin: 24px 0; }
.summary p { margin: 0; }
details { padding: 16px 0; border-bottom: 1px solid #e1e4df; }
summary { font-weight: 600; cursor: pointer; }
details[open] summary { margin-bottom: 12px; }
.next-step { margin-top: 32px; }
footer { font-size: .9rem; color: #5e6661; }
footer p { margin-block: 6px; }
.skip-link { position: absolute; top: -100px; left: 16px; background: #fff; padding: 8px 12px; border-radius: 8px; }
.skip-link:focus { top: 12px; }

@media (prefers-color-scheme: dark) {
  :root { background: #181b19; color: #eef0ec; }
  .summary, .skip-link { background: #222723; border-color: #3b423d; }
  .meta, footer { color: #b7c1ba; }
  a { color: #b6afff; }
  details { border-color: #3b423d; }
}