.concept-heading {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 3rem;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2rem;
}
.concept-heading p { max-width: 37ch; margin: 0; color: var(--muted); }
.concept-switcher { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1rem; }
.concept-switcher button {
  min-height: 44px;
  padding: .55rem 1rem;
  font-weight: 600;
  background: transparent;
  color: var(--deep);
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
}
.concept-switcher button:hover { border-color: var(--pine); }
.concept-switcher button[aria-pressed="true"] { color: white; background: var(--deep); border-color: var(--deep); }
.concept-study {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  margin: 0 0 1rem;
  background: #edeadf;
  color: #263e34;
}
.concept-study > img { display: block; width: 100%; height: clamp(310px, 35vw, 480px); object-fit: cover; }
.concept-study figcaption { align-self: center; padding: clamp(1.5rem, 4vw, 4.5rem); }
.concept-study small { color: #765038; font-size: .8rem; font-weight: 600; }
.concept-study h3 { margin: .9rem 0 1rem; font-size: clamp(1.8rem, 3.4vw, 3.4rem); line-height: 1.04; letter-spacing: -.035em; }
.concept-study p { margin: 0; max-width: 40ch; }
.concept-study ul {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 1rem;
  margin: 1.5rem 0 0;
  padding: .8rem 0 0;
  border-top: 1px solid #c3c2b4;
  list-style: none;
  font-size: .8rem;
  font-weight: 600;
}
.concept-switcher[hidden], .concept-study[hidden] { display: none; }
@media (max-width: 720px) {
  .concept-study { grid-template-columns: 1fr; }
  .concept-study > img { height: auto; max-height: 330px; aspect-ratio: 4 / 3; }
}