:root {
  color-scheme: dark;
  --ink: #f7f0e5;
  --muted: #b6c0d2;
  --navy: #07111f;
  --navy-soft: #0d1b2d;
  --line: rgba(247, 240, 229, 0.14);
  --gold: #f4b94f;
  --gold-soft: rgba(244, 185, 79, 0.13);
  --danger: #ff9c9c;
  --max: 72rem;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 88% 4%, rgba(244, 185, 79, 0.12), transparent 28rem),
    var(--navy);
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.7;
}
a { color: var(--gold); text-underline-offset: 0.2em; }
a:hover, a:focus-visible { color: #ffd98a; }
a:focus-visible { outline: 0.18rem solid var(--gold); outline-offset: 0.25rem; }
.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 10;
  padding: 0.65rem 1rem;
  color: var(--navy);
  background: var(--gold);
  border-radius: 0.4rem;
}
.skip-link:focus { top: 1rem; }
.shell { width: min(calc(100% - 2rem), var(--max)); margin-inline: auto; }
header {
  border-bottom: 1px solid var(--line);
  background: rgba(7, 17, 31, 0.88);
}
.nav {
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  font-weight: 750;
  font-size: 1.2rem;
  text-decoration: none;
  letter-spacing: 0.02em;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  border: 1px solid var(--gold);
  border-radius: 50%;
  color: var(--gold);
}
nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
nav a { color: var(--muted); font-size: 0.92rem; text-decoration: none; }
nav a[aria-current="page"] { color: var(--gold); }
main { min-height: calc(100vh - 14rem); }
.hero { padding: clamp(4rem, 10vw, 8rem) 0 5rem; }
.eyebrow {
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
h1, h2, h3 { line-height: 1.18; text-wrap: balance; }
h1 { max-width: 16ch; margin: 0.5rem 0 1.2rem; font-size: clamp(2.5rem, 8vw, 5.4rem); }
h2 { margin-top: 2.7rem; font-size: clamp(1.45rem, 4vw, 2rem); }
h3 { margin-top: 1.8rem; font-size: 1.08rem; }
.hero p { max-width: 44rem; color: var(--muted); font-size: clamp(1.05rem, 2.6vw, 1.3rem); }
.actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2rem; }
.button {
  display: inline-block;
  padding: 0.75rem 1.05rem;
  border: 1px solid var(--gold);
  border-radius: 0.55rem;
  color: var(--navy);
  background: var(--gold);
  font-weight: 720;
  text-decoration: none;
}
.button.secondary { color: var(--gold); background: transparent; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; padding-bottom: 5rem; }
.card {
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  padding: 1.35rem;
  background: linear-gradient(145deg, rgba(255,255,255,0.035), rgba(255,255,255,0.01));
}
.card h2, .card h3 { margin-top: 0; }
.card p { color: var(--muted); }
.document { width: min(calc(100% - 2rem), 52rem); margin-inline: auto; padding: 3.5rem 0 5rem; }
.document h1 { max-width: 22ch; font-size: clamp(2.2rem, 7vw, 4rem); }
.document p, .document li { color: #d1d8e3; }
.document strong { color: var(--ink); }
.meta, .notice {
  border-left: 0.2rem solid var(--gold);
  padding: 0.8rem 1rem;
  background: var(--gold-soft);
  color: var(--muted);
}
.danger { border-left-color: var(--danger); }
.toc { margin: 2rem 0; padding: 1rem 1.2rem; border: 1px solid var(--line); border-radius: 0.7rem; }
.toc ul { columns: 2; padding-left: 1.2rem; }
footer { border-top: 1px solid var(--line); color: var(--muted); }
.footer-inner { display: flex; justify-content: space-between; gap: 1rem; padding: 2rem 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; }
.footer-links a { color: var(--muted); }
code { color: var(--gold); }

@media (max-width: 48rem) {
  .nav { align-items: flex-start; flex-direction: column; padding: 1rem 0; }
  nav ul { justify-content: flex-start; }
  .grid { grid-template-columns: 1fr; }
  .toc ul { columns: 1; }
  .footer-inner { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }