.case-study-page {
  --paper: var(--bg);
  --surface: var(--card);
  --surface-2: var(--card);
  --ink: var(--text);
  --ink-soft: var(--muted);
  --ink-2: var(--muted);
  --ink-3: var(--faint);
  --rule: var(--line);
  --accent-dim: color-mix(in srgb, var(--accent) 14%, transparent);
  --code-bg: var(--card);
  --codebg: var(--card);
  --codeink: var(--text);
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
}

.case-study-shell {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 2rem clamp(5rem, 9vw, 8rem);
}

.case-context {
  display: flex;
  gap: .65rem;
  align-items: center;
  padding-top: 2rem;
  color: var(--faint);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.case-context a { color: var(--accent); }

.case-study-content {
  max-width: none;
  margin: 0;
  color: var(--text);
}
.case-study-content > .wrap,
.case-study-content > .page,
.case-study-content .wrap {
  width: 100%;
  max-width: 64rem;
  margin-left: 0;
  margin-right: auto;
  padding-left: 0;
  padding-right: 0;
}
.case-study-content > .wrap,
.case-study-content > .page { padding-top: 0; padding-bottom: 0; }
.case-study-content .col,
.case-study-content .prose { max-width: 49rem; }

.case-study-content .masthead,
.case-study-content .hero {
  margin: 0;
  padding: clamp(2.5rem, 5vw, 4rem) 0 2.5rem;
  border-bottom: 1px solid var(--line);
  background: transparent;
}
.case-study-content .masthead > .wrap,
.case-study-content .hero { max-width: 60rem; }
.case-study-content h1,
.case-study-content h2,
.case-study-content h3,
.case-study-content h4 {
  color: var(--text);
  font-family: var(--serif);
  text-wrap: balance;
}
.case-study-content h1 {
  max-width: 18ch;
  margin: .7rem 0 1.2rem;
  font-size: clamp(2.8rem, 5.5vw, 4.7rem);
  font-weight: 400;
  line-height: .98;
  letter-spacing: -.045em;
}
.case-study-content h1 em { color: var(--accent); font-style: normal; }
.case-study-content h2 {
  margin: 0 0 1.15rem;
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 400;
  line-height: 1.08;
}
.case-study-content h3 { font-size: 1.25rem; line-height: 1.3; }
.case-study-content p,
.case-study-content li { color: var(--muted); }
.case-study-content strong { color: var(--text); }
.case-study-content .standfirst,
.case-study-content .deck,
.case-study-content .lead {
  max-width: 46rem;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  line-height: 1.45;
}
.case-study-content .eyebrow,
.case-study-content .label,
.case-study-content .byline,
.case-study-content .meta,
.case-study-content .meta-line {
  color: var(--accent);
  font-family: var(--sans);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.case-study-content section {
  max-width: 64rem;
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
}
.case-study-content section .wrap { margin-left: 0; }
.case-study-content .keyfigs,
.case-study-content .stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  max-width: 64rem;
  margin: 0;
  border: 1px solid var(--line);
  border-width: 0 0 1px 1px;
  background: transparent;
}
.case-study-content .keyfig,
.case-study-content .stat {
  min-width: 0;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-width: 1px 1px 0 0;
  background: var(--card);
}
.case-study-content .num,
.case-study-content .stat strong {
  color: var(--accent);
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  font-weight: 400;
  line-height: 1;
}
.case-study-content .cap,
.case-study-content .stat span { color: var(--muted); }

.case-study-content .callout,
.case-study-content .note,
.case-study-content .pull,
.case-study-content .tldr,
.case-study-content .abstract,
.case-study-content .lesson,
.case-study-content .trap,
.case-study-content .method,
.case-study-content .step,
.case-study-content .rung {
  border-color: var(--line);
  background: var(--card);
  color: var(--muted);
}
.case-study-content .callout,
.case-study-content .note,
.case-study-content .pull,
.case-study-content .tldr,
.case-study-content .abstract {
  margin: 1.75rem 0;
  padding: 1.25rem 1.4rem;
  border-left: 2px solid var(--accent);
}
.case-study-content .steps,
.case-study-content .methods,
.case-study-content .traps,
.case-study-content .ladder { border-color: var(--line); }

.case-study-content .tablewrap {
  max-width: 64rem;
  margin: 1.6rem 0 2.2rem;
  overflow-x: auto;
  border: 1px solid var(--line);
}
.case-study-content table {
  width: 100%;
  border-collapse: collapse;
  color: var(--text);
  background: var(--card);
  font-family: var(--sans);
  font-size: .875rem;
  font-variant-numeric: tabular-nums;
}
.case-study-content th,
.case-study-content td {
  padding: .8rem .9rem;
  border-color: var(--line);
  color: var(--muted);
  text-align: left;
}
.case-study-content th { color: var(--text); font-weight: 600; }
.case-study-content pre,
.case-study-content code {
  border-color: var(--line);
  background: var(--card);
  color: var(--text);
}
.case-study-content pre {
  max-width: 64rem;
  overflow-x: auto;
  padding: 1rem 1.15rem;
}
.case-study-content svg { max-width: 100%; height: auto; }
.case-study-content .bars,
.case-study-content .dist,
.case-study-content .range,
.case-study-content .diverge { max-width: 64rem; color: var(--text); }

.case-study-content > footer {
  max-width: 49rem;
  margin: 0;
  padding: 2.5rem 0;
  border-top: 0;
  color: var(--faint);
  font-size: .8rem;
}
.case-study-content > footer .wrap { max-width: 49rem; }
.case-study-content > footer p { color: var(--faint); }
.case-study-back {
  display: inline-block;
  margin-top: 2.5rem;
  padding-bottom: .2rem;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.case-study-back:hover { color: var(--accent); }

@media (max-width: 760px) {
  .case-study-shell { padding-left: 1.25rem; padding-right: 1.25rem; }
  .case-study-content .keyfigs,
  .case-study-content .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-study-content h1 { font-size: clamp(2.3rem, 9vw, 3.8rem); overflow-wrap: break-word; }
}
@media (max-width: 430px) {
  .case-study-content .keyfigs,
  .case-study-content .stats { grid-template-columns: 1fr; }
  .case-study-content .keyfig,
  .case-study-content .stat { padding: 1.15rem; }
}