.case-header {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  border-bottom: 1px solid var(--line);
}

.case-header .wordmark-copy small {
  color: var(--ink-faint);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink-soft);
  font-size: 12px;
  transition: color 160ms ease, gap 160ms ease;
}

.back-link:hover {
  gap: 13px;
  color: var(--accent);
}

.case-hero {
  padding-block: clamp(76px, 11vw, 140px) clamp(70px, 9vw, 110px);
}

.case-hero .eyebrow {
  max-width: 850px;
}

.case-hero h1 {
  max-width: 980px;
  margin: 0;
  font-size: clamp(3.2rem, 8vw, 7.7rem);
  font-weight: 650;
  line-height: 0.92;
  letter-spacing: -0.07em;
  text-wrap: balance;
}

.case-deck {
  max-width: 790px;
  margin: 34px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.62;
}

.case-status {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 38px;
}

.status-chip {
  display: inline-flex;
  gap: 7px;
  align-items: center;
  padding: 7px 10px;
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.status-chip.good {
  color: var(--accent);
  border-color: rgba(233, 255, 106, 0.2);
}

.case-overview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-block: 1px solid var(--line);
}

.overview-item {
  min-height: 145px;
  padding: 27px;
  border-left: 1px solid var(--line);
}

.overview-item:last-child {
  border-right: 1px solid var(--line);
}

.overview-item small {
  display: block;
  margin-bottom: 13px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 8px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.overview-item strong,
.overview-item a {
  display: block;
  font-size: 13px;
  font-weight: 580;
  line-height: 1.5;
}

.overview-item a:hover {
  color: var(--accent);
}

.case-section {
  display: grid;
  grid-template-columns: minmax(180px, 0.35fr) minmax(0, 1fr);
  gap: clamp(45px, 9vw, 130px);
  padding-block: clamp(80px, 10vw, 135px);
  border-bottom: 1px solid var(--line);
}

.case-section-label {
  position: sticky;
  top: 100px;
  align-self: start;
  margin: 0;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.case-section-body {
  min-width: 0;
}

.case-section-body > h2 {
  max-width: 800px;
  margin: 0 0 28px;
  font-size: clamp(2.1rem, 4vw, 4rem);
  font-weight: 610;
  line-height: 1.02;
  letter-spacing: -0.05em;
  text-wrap: balance;
}

.case-section-body > h3 {
  margin: 47px 0 13px;
  font-size: 18px;
  font-weight: 620;
  letter-spacing: -0.025em;
}

.case-section-body > p,
.case-section-body > ul,
.case-section-body > ol {
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.78;
}

.case-section-body > p {
  margin: 0 0 20px;
}

.case-section-body > ul,
.case-section-body > ol {
  display: grid;
  gap: 10px;
  padding-left: 20px;
}

.callout {
  max-width: 820px;
  margin: 36px 0;
  padding: 24px 26px;
  background: rgba(233, 255, 106, 0.035);
  border: 1px solid rgba(233, 255, 106, 0.16);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-small) var(--radius-small) 0;
}

.callout strong {
  display: block;
  margin-bottom: 6px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}

.callout p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.7;
}

.architecture {
  display: grid;
  grid-template-columns: repeat(5, minmax(95px, 1fr));
  gap: 17px;
  align-items: stretch;
  max-width: 940px;
  margin: 43px 0 30px;
}

.architecture-node {
  position: relative;
  display: grid;
  align-content: center;
  gap: 7px;
  min-height: 115px;
  padding: 18px;
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
}

.architecture-node:not(:last-child)::after {
  position: absolute;
  top: 50%;
  left: calc(100% + 3px);
  width: 11px;
  content: "→";
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 10px;
  transform: translateY(-50%);
}

.architecture-node small {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 8px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.architecture-node strong {
  font-size: 11px;
  font-weight: 600;
  line-height: 1.45;
}

.architecture-node span {
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 7px;
  line-height: 1.45;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-block: 40px;
}

.metric-card {
  min-height: 130px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.022);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.metric-card small {
  display: block;
  min-height: 32px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 8px;
  line-height: 1.5;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.metric-card strong {
  display: block;
  margin-top: 13px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 570;
}

.metric-card span {
  display: block;
  margin-top: 6px;
  color: var(--ink-faint);
  font-size: 9px;
}

.decision-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 35px;
}

.decision-card {
  padding: 24px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 13px;
}

.decision-card small {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 8px;
  text-transform: uppercase;
}

.decision-card h3 {
  margin: 18px 0 10px;
  font-size: 16px;
  font-weight: 610;
}

.decision-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.68;
}

.code-block {
  position: relative;
  overflow-x: auto;
  max-width: 900px;
  margin: 35px 0;
  padding: 25px;
  color: #dce6e1;
  background: #080d12;
  border: 1px solid var(--line);
  border-radius: 13px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  white-space: pre;
}

.code-block::before {
  display: block;
  margin-bottom: 16px;
  content: "$ reproducibility";
  color: var(--ink-faint);
  font-size: 8px;
}

.case-next {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
  padding-block: 90px;
}

.case-next p {
  margin: 0 0 7px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
}

.case-next h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.8rem);
  font-weight: 610;
  line-height: 1;
  letter-spacing: -0.05em;
}

@media (max-width: 920px) {
  .case-overview { grid-template-columns: repeat(2, 1fr); }
  .overview-item:nth-child(2) { border-right: 1px solid var(--line); }
  .overview-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .case-section { grid-template-columns: 1fr; gap: 28px; }
  .case-section-label { position: static; }
  .architecture { grid-template-columns: 1fr; }
  .architecture-node { min-height: 90px; }
  .architecture-node:not(:last-child)::after { top: auto; right: auto; bottom: -16px; left: 50%; content: "↓"; transform: translateX(-50%); }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .case-header .wordmark-copy { display: grid; }
  .case-hero h1 { font-size: clamp(3.1rem, 17vw, 5.5rem); }
  .case-overview { grid-template-columns: 1fr; }
  .overview-item, .overview-item:nth-child(2), .overview-item:last-child { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .overview-item:last-child { border-bottom: 0; }
  .metric-grid, .decision-grid { grid-template-columns: 1fr; }
  .case-next { grid-template-columns: 1fr; }
}