:root {
  color-scheme: light dark;
  --bg: #fff;
  --surface: #f5f5f7;
  --card: #fff;
  --text: #0a0a0b;
  --muted: #5d5d63;
  --border: #d2d2d7;
  --accent: #0066cc;
  --focus: #0066cc;
  --pass: #146c3a;
  --fail: #b42318;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0b;
    --surface: #1d1d1f;
    --card: #151517;
    --text: #f5f5f7;
    --muted: #b7b7bd;
    --border: #3a3a3c;
    --accent: #64a9ff;
    --focus: #64a9ff;
    --pass: #61d889;
    --fail: #ff8a80;
  }
}
* { box-sizing: border-box; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
a { color: var(--accent); text-underline-offset: .2em; }
a:hover { text-decoration-thickness: .14em; }
:focus-visible { outline: 4px solid var(--focus); outline-offset: 3px; }
.skip-link {
  position: fixed;
  z-index: 100;
  top: -6rem;
  left: 1rem;
  padding: .7rem 1rem;
  border-radius: .6rem;
  background: var(--text);
  color: var(--bg);
  font-weight: 700;
}
.skip-link:focus { top: 1rem; }
.site-header { border-bottom: 1px solid var(--border); background: color-mix(in srgb, var(--bg) 92%, transparent); }
.header-inner,
.page,
.footer-inner { width: min(72rem, calc(100% - 2rem)); margin-inline: auto; }
.header-inner { display: flex; min-height: 4rem; align-items: center; justify-content: space-between; gap: 1.25rem; }
.brand { color: var(--text); font-weight: 800; text-decoration: none; }
.site-nav { display: flex; flex-wrap: wrap; gap: .25rem; }
.site-nav a { padding: .45rem .65rem; border-radius: 999px; color: var(--muted); font-size: .82rem; font-weight: 650; text-decoration: none; }
.site-nav a:hover,
.site-nav a[aria-current="page"] { background: var(--surface); color: var(--text); }
.page { padding-block: 2.5rem 5rem; }
.breadcrumbs { margin: 0 0 2.5rem; color: var(--muted); font-size: .82rem; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0; padding: 0; list-style: none; }
.breadcrumbs li + li::before { margin-right: .5rem; content: "/"; color: var(--border); }
.eyebrow { margin: 0 0 .7rem; color: var(--accent); font-size: .78rem; font-weight: 750; letter-spacing: .14em; text-transform: uppercase; }
h1,
h2,
h3 { line-height: 1.12; letter-spacing: -.025em; }
h1 { max-width: 17ch; margin: 0; font-size: clamp(2.6rem, 7vw, 5.4rem); }
h2 { margin-top: 3.5rem; font-size: clamp(1.7rem, 4vw, 2.5rem); }
h3 { font-size: 1.15rem; }
.lede { max-width: 47rem; margin-block: 1.3rem 0; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.3rem); }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: .65rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}
.button.primary { border-color: var(--text); background: var(--text); color: var(--bg); }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.card { padding: 1.4rem; border: 1px solid var(--border); border-radius: 1.1rem; background: var(--card); }
.card h2,
.card h3 { margin: 0 0 .65rem; }
.card p { margin: 0; color: var(--muted); }
.card ul { padding-left: 1.2rem; color: var(--muted); }
.card .button { margin-top: 1.2rem; }
.status { display: inline-flex; margin-bottom: .7rem; padding: .2rem .55rem; border-radius: 999px; background: var(--surface); color: var(--muted); font-size: .7rem; font-weight: 750; letter-spacing: .06em; text-transform: uppercase; }
.flow { counter-reset: flow; display: grid; gap: 1rem; margin: 1.5rem 0 0; padding: 0; list-style: none; }
.flow > li { counter-increment: flow; min-width: 0; padding: 1.4rem; border: 1px solid var(--border); border-radius: 1rem; background: var(--card); }
.flow > li::before { content: counter(flow); display: grid; width: 2rem; height: 2rem; place-items: center; margin-bottom: .8rem; border-radius: 999px; background: var(--surface); color: var(--accent); font-size: .78rem; font-weight: 800; }
.flow h2 { margin: 0 0 .6rem; font-size: 1.4rem; }
.flow p { color: var(--muted); }
.comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.comparison > * { min-width: 0; }
.comparison .fail { border-color: color-mix(in srgb, var(--fail) 45%, var(--border)); }
.comparison .pass { border-color: color-mix(in srgb, var(--pass) 45%, var(--border)); }
.label-fail { color: var(--fail); font-weight: 800; }
.label-pass { color: var(--pass); font-weight: 800; }
pre { max-width: 100%; overflow-x: auto; padding: 1rem; border-radius: .8rem; background: #111114; color: #f5f5f7; font: .85rem/1.65 ui-monospace, SFMono-Regular, Menlo, monospace; }
.note { padding: 1rem; border-left: .3rem solid var(--accent); background: var(--surface); color: var(--muted); }
.site-footer { border-top: 1px solid var(--border); }
.footer-inner { padding-block: 2rem; color: var(--muted); font-size: .85rem; }
@media (max-width: 760px) {
  .header-inner { align-items: flex-start; flex-direction: column; padding-block: .8rem; }
  .site-nav { width: 100%; overflow-x: auto; flex-wrap: nowrap; padding-bottom: .35rem; }
  .site-nav a { white-space: nowrap; }
  .grid,
  .comparison { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}