:root {
  color-scheme: light;
  --ink: #171714;
  --muted: #6b6a63;
  --paper: #f5f3eb;
  --card: #fffefa;
  --line: #d9d5c8;
  --yellow: #f4d33b;
  --red: #d94338;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
}

a { color: inherit; }

.shell {
  width: min(860px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0 40px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 32px;
}

.mark {
  display: grid;
  place-items: center;
  width: 68px;
  height: 68px;
  border: 2px solid var(--ink);
  border-radius: 50%;
  background: var(--yellow);
  font-weight: 900;
  letter-spacing: -0.06em;
}

h1, h2, h3 {
  margin: 0;
  line-height: 1.16;
  letter-spacing: -0.025em;
}

h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.25rem); margin-bottom: 16px; }
h3 { font-size: 1.15rem; margin: 34px 0 8px; }

p, ul { margin: 0 0 16px; }
ul { padding-left: 24px; }

.eyebrow {
  margin: 0 0 4px;
  color: var(--red);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.card {
  padding: clamp(24px, 5vw, 52px);
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--card);
  box-shadow: 0 12px 36px rgba(26, 25, 20, 0.06);
}

.intro > p:not(.eyebrow) { max-width: 620px; color: var(--muted); }

.links {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.links a {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border: 1px solid var(--ink);
  border-radius: 10px;
  text-decoration: none;
  font-weight: 750;
}

.links a:hover, .links a:focus-visible { background: var(--yellow); }

.document h2 { margin-bottom: 8px; }
.document .updated { color: var(--muted); }
.document section { border-top: 1px solid var(--line); margin-top: 30px; }
.back { display: inline-block; margin-bottom: 24px; font-weight: 700; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 0.9rem;
}

footer p { margin: 0; }

@media (max-width: 620px) {
  .shell { padding-top: 32px; }
  footer { flex-direction: column; gap: 4px; }
}