.case-study-index {
  margin: 0 auto;
  max-width: 78rem;
  min-height: 65vh;
  padding: clamp(2.5rem, 6vw, 5.5rem) clamp(1rem, 4vw, 3rem);
}

.case-study-index header {
  max-width: 48rem;
}

.case-study-index h1 {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 7vw, 6.5rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin: 0 0 1.25rem;
}

.case-study-index header > p:last-child {
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.55;
}

.case-study-grid {
  display: grid;
  gap: 1rem;
  grid-auto-rows: 1fr;
  grid-template-columns: repeat(auto-fit, minmax(min(22rem, 100%), 1fr));
  list-style: none;
  margin: clamp(2.5rem, 6vw, 5rem) 0 0;
  padding: 0;
}

.case-study-grid > li {
  display: flex;
}

.case-study-grid a {
  background: var(--panel);
  border: 1px solid var(--border);
  border-top: 0.35rem solid var(--accent);
  border-radius: 0.35rem;
  color: var(--text);
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 15rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  text-decoration: none;
}

.case-study-grid a:hover {
  border-top-color: var(--accent-strong);
  box-shadow: var(--shadow);
}

.case-study-grid span {
  color: var(--muted);
  font: 750 0.72rem/1.2 var(--font-ui);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-study-grid strong {
  font-family: var(--font-serif);
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  font-weight: 550;
  line-height: 1.15;
  margin: 1rem 0;
}

.case-study-grid small {
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.55;
}

.case-study-shell {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  grid-template-columns: minmax(10rem, 14rem) minmax(0, 46rem) minmax(
      10rem,
      14rem
    );
  justify-content: center;
  margin: 0 auto;
  max-width: 92rem;
  padding: clamp(2rem, 5vw, 4rem) clamp(1rem, 3vw, 2.5rem) 5rem;
}

.case-study-main {
  min-width: 0;
}

.case-study-prose {
  padding: 0;
}

.case-study-context,
.case-study-outline {
  align-self: start;
  position: sticky;
  top: 5rem;
}

.case-study-context > p,
.case-study-outline > p {
  color: var(--muted);
  font: 750 0.72rem/1.2 var(--font-ui);
  letter-spacing: 0.08em;
  margin: 0 0 0.75rem;
  text-transform: uppercase;
}

.case-study-context a {
  border-top: 1px solid var(--border);
  color: var(--text);
  display: block;
  font-size: 0.9rem;
  line-height: 1.35;
  padding: 0.65rem 0;
  text-decoration: none;
}

.case-study-context a:hover {
  color: var(--accent-strong);
}

@media (max-width: 68rem) {
  .case-study-shell {
    grid-template-columns: minmax(0, 46rem) minmax(10rem, 14rem);
  }

  .case-study-context {
    display: flex;
    gap: 1rem;
    grid-column: 1 / -1;
    position: static;
  }

  .case-study-context > p {
    margin: 0;
    padding: 0.65rem 0;
  }

  .case-study-context a {
    border-bottom: 1px solid var(--border);
    border-top: 0;
  }
}

@media (max-width: 46rem) {
  .case-study-shell {
    display: block;
  }

  .case-study-context {
    flex-wrap: wrap;
    margin-bottom: 2rem;
  }

  .case-study-outline {
    border-top: 1px solid var(--border);
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    position: static;
  }
}