:root {
  --case-ink: #3f4854;
  --case-muted: #8b9199;
  --case-rule: #e4e6e8;
  --case-blue: #dce8f4;
  --case-blue-deep: #7f9fbd;
  --case-warm: #f2eee7;
}

body {
  color: var(--case-ink);
  background: #fafbfc;
}

.case-page {
  width: min(1240px, calc(100% - 3rem));
  margin: 0 auto;
}

.case-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-bottom: 1px solid var(--case-rule);
  background: rgba(250, 251, 252, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  font-family: "Geist", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 0.94rem;
}

.case-brand-lockup {
  display: flex;
  gap: 1rem;
}

.case-brand:hover,
.case-brand:focus-visible {
  text-decoration: none;
}

.case-brand > span:first-child {
  transition: color 180ms ease;
}

.case-brand:hover > span:first-child,
.case-brand:focus-visible > span:first-child {
  color: var(--highlight);
}

.case-header-links {
  display: flex;
  gap: clamp(1.2rem, 3vw, 2.5rem);
}

.case-header a:hover,
.case-header a:focus-visible,
.case-actions a:hover,
.case-actions a:focus-visible {
  color: #111;
  text-decoration-color: var(--highlight);
}

.case-layout {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  padding: 3.25rem 0 6rem;
}

.case-rail {
  position: sticky;
  top: 2rem;
  height: fit-content;
  font-size: 0.88rem;
}

.case-back {
  display: inline-block;
  margin-bottom: 2.6rem;
  color: var(--case-ink);
}

.case-index {
  display: grid;
  gap: 0.75rem;
  color: var(--case-muted);
}

.case-index a:hover,
.case-index a:focus-visible {
  color: var(--case-ink);
  text-decoration: none;
}

.case-content {
  min-width: 0;
}

.case-hero,
.case-section {
  scroll-margin-top: 5.25rem;
}

.case-hero {
  animation: case-enter 700ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.case-eyebrow,
.section-kicker,
.case-meta dt,
.recommendation-card > span,
.cohort-card > span {
  color: var(--case-muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-eyebrow {
  max-width: 62ch;
  line-height: 1.45;
  letter-spacing: 0;
  text-transform: none;
}

.case-hero h1 {
  max-width: 16ch;
  margin-top: 1.15rem;
  font-family: "Geist", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: clamp(3.6rem, 7vw, 6.6rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 0.96;
}

.case-hero h1 em {
  font-weight: 400;
}

.case-lede {
  max-width: 46rem;
  margin-top: 1.5rem;
  font-size: clamp(1rem, 1.5vw, 1.2rem);
}

.case-cover {
  min-height: 420px;
  display: grid;
  grid-template-columns: minmax(180px, 0.75fr) auto minmax(260px, 1.15fr);
  gap: clamp(1rem, 4vw, 3.5rem);
  align-items: center;
  margin-top: 3rem;
  padding: clamp(2rem, 6vw, 5rem);
  overflow: hidden;
  background:
    radial-gradient(circle at 25% 20%, rgba(255, 255, 255, 0.95), transparent 16rem),
    linear-gradient(135deg, #e5edf5, #c8d7e5 52%, #f0e9df);
}

.signal-stack {
  display: grid;
  gap: 0.65rem;
}

.signal-stack span {
  display: block;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(63, 72, 84, 0.15);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 30px rgba(63, 72, 84, 0.08);
  font-size: 0.88rem;
}

.signal-stack span:nth-child(2) {
  transform: translateX(1rem);
}

.cover-arrow {
  color: rgba(63, 72, 84, 0.45);
  font-family: "Geist", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 2.5rem;
}

.value-card {
  padding: clamp(1.5rem, 4vw, 3rem);
  background: var(--case-ink);
  color: #fff;
  box-shadow: 0 22px 55px rgba(63, 72, 84, 0.2);
}

.value-card span {
  color: #bfc8d2;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.value-card strong {
  display: block;
  margin-top: 2.5rem;
  font-family: "Geist", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.04;
}

.case-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
  margin: 2.25rem 0 0;
}

.case-meta div {
  border-top: 1px solid var(--case-rule);
  padding-top: 0.9rem;
}

.case-meta dd {
  margin: 0.5rem 0 0;
  color: var(--case-ink);
  font-size: 0.9rem;
  line-height: 1.4;
}

.confidentiality-note {
  margin-top: 1.5rem;
  color: var(--case-muted);
  font-size: 0.8rem;
}

.case-section {
  padding-top: clamp(6rem, 12vw, 10rem);
}

.case-section h2 {
  max-width: 20ch;
  margin-top: 0.8rem;
  font-size: clamp(2.3rem, 5vw, 4.4rem);
  letter-spacing: -0.04em;
  line-height: 1;
}

.section-intro {
  max-width: 46rem;
  margin-top: 1.5rem;
  font-size: 1.05rem;
}

.problem-map {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 3rem;
  border-top: 1px solid var(--case-rule);
  border-bottom: 1px solid var(--case-rule);
}

.problem-map article {
  min-height: 250px;
  padding: 1.25rem;
  border-right: 1px solid var(--case-rule);
}

.problem-map article:last-child {
  border-right: 0;
}

.problem-number,
.principle-index {
  color: var(--case-muted);
  font-family: "Geist", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-style: italic;
}

.problem-map h3 {
  margin-top: 4rem;
  font-size: 1.45rem;
}

.problem-map p {
  margin-top: 0.65rem;
  font-size: 0.9rem;
}

.cohort-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 3rem;
}

.cohort-card {
  min-height: 460px;
  padding: clamp(1.5rem, 4vw, 3rem);
}

.cohort-card h3 {
  max-width: 10ch;
  margin-top: 5rem;
  font-size: clamp(2rem, 4vw, 3.4rem);
  letter-spacing: -0.04em;
  line-height: 1;
}

.cohort-card p {
  max-width: 30rem;
  margin-top: 1.2rem;
}

.cohort-card ul {
  display: grid;
  gap: 0.4rem;
  margin-top: 1.5rem;
}

.cohort-dark {
  background: var(--case-ink);
  color: #fff;
}

.cohort-dark p,
.cohort-dark li,
.cohort-dark > span {
  color: #c8cdd3;
}

.cohort-light {
  background: var(--case-warm);
}

.principle-list {
  margin-top: 3rem;
  border-top: 1px solid var(--case-rule);
}

.principle-row {
  display: grid;
  grid-template-columns: 50px minmax(0, 1fr) minmax(220px, 0.75fr);
  gap: 1.5rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--case-rule);
}

.principle-row h3 {
  font-size: 1.35rem;
}

.principle-row p {
  margin-top: 0.5rem;
  font-size: 0.92rem;
}

.principle-example {
  color: var(--case-muted);
}

.recommendation-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 3rem;
}

.recommendation-card {
  min-height: 360px;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--case-rule);
  background: #fff;
}

.recommendation-card h3 {
  margin-top: 0.65rem;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
}

.recommendation-card > p {
  margin-top: 1.5rem;
  font-size: 0.9rem;
}

.recommendation-wide {
  min-height: 400px;
  grid-column: 1 / -1;
  background: var(--case-blue);
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: 5rem;
}

.metric-row div {
  padding-top: 1rem;
  border-top: 1px solid var(--case-rule);
}

.metric-row strong {
  display: block;
  font-family: "Geist", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 2.5rem;
  font-weight: 400;
}

.metric-row span {
  color: var(--case-muted);
  font-size: 0.8rem;
}

.status-list {
  display: grid;
  gap: 0.7rem;
  margin-top: 4.2rem;
}

.status-list span {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--case-rule);
  font-size: 0.88rem;
}

.status-list i {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--highlight);
}

.scoreboard {
  height: 150px;
  display: flex;
  align-items: end;
  gap: clamp(0.5rem, 2vw, 1.3rem);
  margin-top: 3rem;
  padding-top: 1rem;
  border-bottom: 1px solid rgba(63, 72, 84, 0.3);
}

.scoreboard span {
  width: min(8%, 55px);
  height: var(--height);
  background: var(--case-ink);
}

.reflection-section {
  padding-bottom: 4rem;
}

.reflection-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--case-rule);
}

.reflection-grid p {
  font-size: 1rem;
}

.case-actions {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 4rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--case-rule);
  font-size: 0.9rem;
}

@keyframes case-enter {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .case-hero {
    animation: none;
  }
}

@media (max-width: 900px) {
  .case-layout {
    grid-template-columns: 1fr;
  }

  .case-rail {
    position: static;
  }

  .case-index {
    display: none;
  }

  .case-back {
    margin-bottom: 0;
  }

  .case-cover {
    min-height: 360px;
  }

  .case-meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .case-page {
    width: calc(100% - 1.5rem);
  }

  .case-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.8rem;
    padding: 0.9rem 0;
  }

  .case-header-links {
    width: 100%;
    justify-content: space-between;
  }

  .case-layout {
    padding-top: 2rem;
  }

  .case-hero h1 {
    font-size: clamp(3rem, 14vw, 4rem);
  }

  .case-cover {
    min-height: 520px;
    grid-template-columns: 1fr;
  }

  .signal-stack span:nth-child(2) {
    transform: none;
  }

  .cover-arrow {
    transform: rotate(90deg);
    text-align: center;
  }

  .case-meta,
  .problem-map,
  .cohort-grid,
  .recommendation-grid,
  .reflection-grid {
    grid-template-columns: 1fr;
  }

  .problem-map article {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--case-rule);
  }

  .problem-map article:last-child {
    border-bottom: 0;
  }

  .problem-map h3,
  .cohort-card h3 {
    margin-top: 2.5rem;
  }

  .cohort-card {
    min-height: 390px;
  }

  .principle-row {
    grid-template-columns: 36px 1fr;
  }

  .principle-example {
    grid-column: 2;
  }

  .recommendation-wide {
    grid-column: auto;
  }

  .case-actions {
    align-items: flex-start;
    flex-direction: column;
  }
}

.clerestory-case {
  --case-ink: #173d2a;
  --case-muted: #6b766f;
  --case-rule: rgba(23, 61, 42, 0.16);
  background: #f4f1e9;
}

.clerestory-case .case-header {
  background: rgba(244, 241, 233, 0.88);
}

.clerestory-case .case-hero h1 {
  max-width: 14ch;
}

.clerestory-gallery {
  display: grid;
  gap: clamp(1rem, 2.5vw, 2rem);
  margin-top: 2.5rem;
}

.clerestory-gallery-process {
  grid-template-columns: 1.08fr 0.92fr;
}

.clerestory-gallery-final {
  grid-template-columns: 0.72fr 1.28fr;
  align-items: start;
}

.clerestory-figure {
  min-width: 0;
  margin: 0;
}

.clerestory-figure-wide {
  grid-row: span 2;
}

.clerestory-figure-tall {
  grid-row: span 2;
}

.clerestory-figure img {
  width: 100%;
  display: block;
  background: #fff;
  object-fit: cover;
}

.clerestory-gallery-process .clerestory-figure-wide img {
  aspect-ratio: 4 / 5;
}

.clerestory-gallery-process .clerestory-figure:not(.clerestory-figure-wide) img {
  aspect-ratio: 16 / 9;
}

.clerestory-gallery-final .clerestory-figure-tall img {
  aspect-ratio: 2 / 3;
}

.clerestory-gallery-final .clerestory-figure:not(.clerestory-figure-tall) img {
  aspect-ratio: 3 / 2;
}

.clerestory-figure figcaption {
  margin-top: 0.65rem;
  color: var(--case-muted);
  font-size: 0.78rem;
}

@media (max-width: 680px) {
  .clerestory-gallery-process,
  .clerestory-gallery-final {
    grid-template-columns: 1fr;
  }

  .clerestory-figure-wide,
  .clerestory-figure-tall {
    grid-row: auto;
  }

  .clerestory-gallery-process .clerestory-figure-wide img,
  .clerestory-gallery-final .clerestory-figure-tall img {
    aspect-ratio: auto;
  }
}