.case-study-page {
  background: var(--night);
}

.case-header {
  position: relative;
  border-bottom: 1px solid var(--line-light);
  background: var(--night);
}

.case-study-page article {
  overflow: hidden;
}

.case-study-page .case-section,
.case-hero {
  position: relative;
  width: min(100%, var(--max));
  margin-inline: auto;
  padding: var(--section-pad) var(--gutter);
}

.case-hero {
  min-height: calc(100svh - 76px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background:
    radial-gradient(circle at 78% 22%, rgb(71 231 224 / 14%), transparent 26%),
    linear-gradient(132deg, var(--night), var(--deep-water));
}

.case-kicker {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--aqua);
  font: 650 0.62rem/1.4 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.case-hero h1 {
  position: relative;
  z-index: 2;
  max-width: 12ch;
  margin: clamp(2rem, 6vw, 5rem) 0 2rem;
  font-size: clamp(4rem, 8.4vw, 9rem);
  line-height: 0.84;
  letter-spacing: -0.075em;
}

.case-hero h1 em,
.split-heading h2 em {
  color: var(--signal);
  font-style: normal;
}

.case-deck {
  position: relative;
  z-index: 2;
  max-width: 60ch;
  color: var(--fog);
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
}

.case-orbit {
  position: absolute;
  top: 8%;
  right: 3%;
  width: min(43vw, 42rem);
  aspect-ratio: 1;
  border: 1px solid var(--line-light);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--aqua);
  font: 650 0.58rem/1 var(--font-mono);
  letter-spacing: 0.15em;
  opacity: 0.62;
}

.case-orbit i {
  position: absolute;
  inset: calc(13% * var(--ring));
  border: 1px solid var(--line-light);
  border-radius: 50%;
}

.case-orbit i:nth-child(2) { --ring: 1; }
.case-orbit i:nth-child(3) { --ring: 2; }
.case-orbit i:nth-child(4) { --ring: 3; }

.hero-facts {
  position: relative;
  z-index: 2;
  margin: clamp(3rem, 8vw, 7rem) 0 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line-light);
  border-left: 1px solid var(--line-light);
}

.hero-facts div {
  min-height: 8rem;
  padding: 1rem;
  border-right: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

.hero-facts dt {
  color: var(--aqua);
  font: 650 0.58rem/1.4 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-facts dd {
  margin: 1.8rem 0 0;
  color: var(--paper);
  font: 620 clamp(1.15rem, 2vw, 1.7rem)/1.15 var(--font-display);
}

.split-heading,
.cta-grid,
.plugin-card {
  margin-top: clamp(3rem, 7vw, 6rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.78fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: start;
}

.split-heading h2,
.numbers h2,
.plugin-card h2,
.case-cta h2 {
  margin: 0;
  font-size: clamp(3rem, 6vw, 6.2rem);
  line-height: 0.92;
  letter-spacing: -0.06em;
}

.split-heading p,
.plugin-card p,
.case-cta p,
.method-note {
  color: var(--fog);
}

.split-heading p:first-child {
  margin-top: 0;
}

.numbers {
  background: var(--bone);
  color: var(--night);
}

.numbers .section-meta {
  border-color: var(--line-dark);
}

.numbers h2 {
  max-width: 12ch;
  margin-top: clamp(3rem, 7vw, 6rem);
}

.metric-table {
  margin-top: clamp(3rem, 6vw, 5rem);
  overflow-x: auto;
  border: 1px solid rgb(8 11 11 / 45%);
}

.metric-table:focus-visible {
  outline: 3px solid var(--accent-hot-on-light);
  outline-offset: 3px;
}

.metric-table table {
  width: 100%;
  min-width: 48rem;
  border-collapse: collapse;
  background: var(--paper);
}

.metric-table th,
.metric-table td {
  padding: 1rem;
  border-right: 1px solid rgb(8 11 11 / 24%);
  border-bottom: 1px solid rgb(8 11 11 / 24%);
  text-align: left;
  vertical-align: top;
}

.metric-table thead th {
  background: var(--night);
  color: var(--aqua);
  font: 650 0.62rem/1.4 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-table tbody th {
  font-weight: 700;
}

.method-note {
  max-width: 78ch;
  color: #40504e;
  font-size: 0.88rem;
}

.intervention {
  background: var(--eucalyptus-deep);
}

.intervention-grid {
  margin-top: clamp(3rem, 7vw, 6rem);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line-light);
  border-left: 1px solid var(--line-light);
}

.intervention-grid > div {
  min-height: 25rem;
  padding: 1.5rem;
  border-right: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

.intervention-grid > div > span {
  color: var(--aqua);
  font: 650 0.6rem/1 var(--font-mono);
  letter-spacing: 0.09em;
}

.intervention-grid h2 {
  margin: 5rem 0 1rem;
  font-size: clamp(2rem, 3.2vw, 3.4rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.intervention-grid p,
.limits li {
  color: var(--fog);
}

.limits ul {
  margin: 2rem 0 0;
  padding-left: 1.2rem;
}

.limits li + li {
  margin-top: 1rem;
}

.limits strong {
  color: var(--paper);
}

.plugin-card {
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--aqua);
  background: rgb(5 7 11 / 70%);
}

.plugin-actions {
  padding-top: 0.5rem;
}

.plugin-actions .button {
  width: 100%;
  justify-content: space-between;
}

.case-cta {
  background: linear-gradient(132deg, var(--eucalyptus-deep), var(--deep-water));
}

.case-cta h2 {
  max-width: 11ch;
}

.case-cta .hero-actions {
  align-self: end;
}

@media (max-width: 900px) {
  .case-header .header-origin { display: none; }
  .hero-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split-heading,
  .cta-grid,
  .plugin-card { grid-template-columns: 1fr; }
  .intervention-grid { grid-template-columns: 1fr; }
  .intervention-grid > div { min-height: 18rem; }
}

@media (max-width: 700px) {
  .case-header nav a:not(:last-child) { display: none; }
  .case-kicker { display: grid; }
  .case-orbit { width: 78vw; right: -25%; opacity: 0.4; }
  .case-hero h1 { max-width: 100%; font-size: clamp(3.1rem, 13vw, 4.8rem); }
  .hero-facts { grid-template-columns: 1fr; }
  .hero-facts div { min-height: 6rem; }
  .hero-facts dd { margin-top: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .case-study-page *,
  .case-study-page *::before,
  .case-study-page *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}