:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1d1d1d;
  --muted: #5f5f5f;
  --line: #d8d8d8;
  --panel: #f6f6f3;
  --link: #174ea6;
  --accent: #234f39;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151515;
    --fg: #e8e8e8;
    --muted: #ababab;
    --line: #3b3b3b;
    --panel: #1e1e1e;
    --link: #8ab4f8;
    --accent: #91c5a4;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 48px 20px 80px; }
a { color: var(--link); }
h1 { margin: 0; font-size: clamp(2rem, 7vw, 3.2rem); line-height: 1.08; letter-spacing: -.025em; }
h2 { margin: 48px 0 12px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 1.25rem; }
p, li { margin-top: .75rem; margin-bottom: .75rem; }
.eyebrow { color: var(--muted); font-size: .88rem; margin: 0 0 14px; }
.subtitle { color: var(--muted); font-size: 1.15rem; margin: 10px 0 30px; }
.definition { background: var(--panel); border-left: 4px solid var(--accent); padding: 14px 20px; font-size: 1.08rem; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; margin: 28px 0; }
.actions .primary { background: var(--fg); color: var(--bg); text-decoration: none; padding: 9px 13px; border-radius: 3px; }
table { width: 100%; border-collapse: collapse; margin: 18px 0 24px; font-size: .92rem; }
th, td { border: 1px solid var(--line); padding: 9px 11px; text-align: left; vertical-align: top; }
th { background: var(--panel); }
code { background: var(--panel); padding: .1em .3em; border-radius: 2px; font-size: .9em; }
ul, ol { padding-left: 24px; }
.loop { list-style: none; padding-left: 0; counter-reset: apqv-step; }
.loop li { counter-increment: apqv-step; display: grid; grid-template-columns: 34px 1fr; column-gap: 10px; border-top: 1px solid var(--line); padding: 12px 0; margin: 0; }
.loop li::before { content: counter(apqv-step); grid-row: span 2; color: var(--muted); font-variant-numeric: tabular-nums; }
.loop strong, .loop span { display: block; }
.loop span { color: var(--muted); }
footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: .88rem; }

@media (max-width: 620px) {
  main { padding-top: 32px; }
  table { display: block; overflow-x: auto; }
}