.article-main { padding: 0 0 92px; }
.article-hero {
  min-height: 520px;
  display: grid;
  grid-template-columns: 1fr 310px;
  gap: 80px;
  align-items: end;
  padding: 90px 0 65px;
  border-bottom: 1px solid var(--line);
}
.article-hero h1 {
  max-width: 840px;
  font-size: clamp(54px, 7vw, 96px);
}
.article-summary {
  margin: 30px 0 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.65;
}
.article-stamp {
  padding: 24px;
  color: white;
  background: var(--ink);
}
.article-stamp span,
.article-stamp small {
  display: block;
  color: rgba(255,255,255,.55);
  font: 400 10px/1.4 var(--mono);
  text-transform: uppercase;
}
.article-stamp strong {
  display: block;
  margin: 18px 0;
  color: var(--signal);
  font: 500 34px/1 var(--mono);
}
.article-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 760px);
  gap: 80px;
  justify-content: center;
  padding-top: 70px;
}
.audit-rail {
  align-self: start;
  position: sticky;
  top: 24px;
  padding-top: 14px;
  border-top: 3px solid var(--signal);
}
.audit-rail h2 {
  margin: 0 0 18px;
  font: 600 17px/1.2 var(--display);
}
.audit-rail p,
.audit-rail li {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}
.audit-rail ul { margin: 0; padding-left: 16px; }
.audit-rail a { color: var(--teal); }
.article-body > *:first-child { margin-top: 0; }
.article-body h2 {
  margin: 64px 0 20px;
  font: 600 clamp(32px, 4vw, 48px)/1 var(--display);
  letter-spacing: -.04em;
}
.article-body h3 {
  margin: 38px 0 14px;
  font: 600 24px/1.15 var(--display);
}
.article-body p,
.article-body li {
  color: #35444d;
  font-size: 16px;
  line-height: 1.85;
}
.article-body li + li { margin-top: 8px; }
.article-body a { color: var(--teal); font-weight: 700; }
.article-body table {
  min-width: 680px;
  background: var(--surface);
}
.article-body .table-wrap { margin: 28px 0; }
.article-body code {
  font-family: var(--mono);
  font-size: .9em;
}
.article-body pre {
  margin: 28px 0;
  padding: 24px;
  overflow-x: auto;
  color: #e5f0ed;
  background: var(--ink);
  font: 400 13px/1.75 var(--mono);
}
.callout {
  margin: 34px 0;
  padding: 24px 28px;
  border-left: 4px solid var(--signal);
  background: var(--surface);
}
.callout strong { display: block; margin-bottom: 8px; font-family: var(--display); }
.callout p { margin: 0; font-size: 14px; }
.article-next {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 20px;
  align-items: center;
  margin-top: 70px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}
.article-next span { color: var(--signal); font: 500 11px/1 var(--mono); }
.article-next strong { font: 600 22px/1.2 var(--display); }
.article-next i { font-style: normal; font-size: 24px; }

@media (max-width: 900px) {
  .article-hero { grid-template-columns: 1fr; gap: 35px; }
  .article-stamp { max-width: 310px; }
  .article-layout { grid-template-columns: 1fr; gap: 35px; }
  .audit-rail { position: static; }
}
@media (max-width: 620px) {
  .article-hero { min-height: auto; padding: 65px 0 50px; }
  .article-summary { font-size: 16px; }
  .article-layout { padding-top: 45px; }
  .article-body h2 { margin-top: 48px; }
}