:root {
  color-scheme: light;
  --paper: oklch(0.965 0.01 83);
  --surface: oklch(0.978 0.009 83);
  --ink: oklch(0.32 0.013 67);
  --muted: oklch(0.48 0.02 75);
  --line: oklch(0.85 0.021 80);
  --amber: oklch(0.48 0.103 66);
  --answer: oklch(0.925 0.038 83);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
}

* { box-sizing: border-box; }
body { margin: 0; }
a { color: var(--amber); text-underline-offset: 0.2em; }
a:hover { text-decoration-thickness: 0.15em; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--amber); outline-offset: 5px; }
.skip { position: absolute; top: -8rem; left: 1rem; padding: 0.75rem; background: var(--surface); }
.skip:focus { top: 1rem; }
.wrap { width: min(100% - 2.5rem, 44rem); margin-inline: auto; }
.site-header { padding-block: 1.25rem; border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 0.7rem; color: var(--ink); text-decoration: none; font-weight: 650; }
.brand img { width: 40px; height: 40px; border-radius: 10px; }
nav { display: flex; gap: 1.25rem; }
nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: 0.95rem; }
nav a[aria-current] { color: var(--ink); font-weight: 650; text-decoration: none; }
main { padding-block: 3.5rem 4rem; }
h1 { margin: 0; font-size: 2.5rem; line-height: 1.12; letter-spacing: -0.035em; font-weight: 700; }
h2 { margin: 2.5rem 0 0.75rem; font-size: 1.45rem; line-height: 1.3; letter-spacing: -0.02em; }
p { margin: 0.75rem 0 1rem; }
.eyebrow { margin: 0 0 0.7rem; color: var(--muted); font-size: 0.85rem; }
.intro { max-width: 38rem; font-size: 1.15rem; line-height: 1.6; }
.muted { color: var(--muted); }
.example { display: flex; align-items: center; justify-content: center; gap: 0.7rem; margin: 2rem 0; padding: 1.75rem 0.75rem; border-block: 1px solid var(--line); font-size: 1.6rem; font-variant-numeric: tabular-nums; }
.example strong { padding: 0.15rem 0.75rem; border: 1px solid var(--amber); border-radius: 0.5rem; color: var(--amber); background: var(--answer); font-weight: 600; }
ol { padding-left: 1.5rem; }
li { padding-left: 0.35rem; margin-block: 0.45rem; }
li::marker { color: var(--muted); }
details { border-bottom: 1px solid var(--line); padding-block: 0.85rem; }
summary { min-height: 44px; display: list-item; align-content: center; cursor: pointer; font-weight: 600; }
details p { margin-left: 1.1rem; }
.contact { display: inline-flex; align-items: center; min-height: 48px; padding: 0.65rem 1rem; border-radius: 0.65rem; background: var(--amber); color: var(--surface); text-decoration: none; font-weight: 600; }
.contact:hover { text-decoration: underline; }
.site-footer { border-top: 1px solid var(--line); padding-block: 1.5rem 2rem; color: var(--muted); font-size: 0.9rem; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.site-footer p { margin: 0; }

@media (max-width: 420px) {
  main { padding-block: 2.5rem 3rem; }
  h1 { font-size: 2.1rem; }
  .example { font-size: 1.4rem; gap: 0.5rem; }
}

@media print {
  .site-header, .site-footer, .skip { display: none; }
  main { padding: 0; }
  .wrap { width: 100%; }
  a { color: inherit; }
}