.timeline-challenge {
  min-width: 0;
  overflow-wrap: anywhere;
}

.timeline-artworks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(.5rem, 2vw, 1.25rem);
  margin-block: 1.1rem;
}

.timeline-artworks.timeline-triple {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.timeline-artwork {
  margin: 0;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--white);
}

.timeline-art-image {
  display: grid;
  place-items: center;
  height: clamp(8rem, 30vw, 18rem);
  padding: clamp(.35rem, 1.25vw, .9rem);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  text-align: center;
}

.timeline-art-image img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: contain;
}

.timeline-artwork figcaption {
  display: grid;
  gap: .15rem;
  padding: .65rem;
  line-height: 1.35;
}

.timeline-options .chip {
  min-height: 44px;
  max-width: 100%;
  white-space: normal;
}

.timeline-feedback h3 {
  font: clamp(1.45rem, 3vw, 2rem)/1.14 var(--serif);
}

.timeline-plot {
  margin-block: .8rem;
  padding: clamp(.65rem, 2vw, 1.2rem);
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--white);
}

.challenge-date-axis {
  display: flex;
  justify-content: space-between;
  margin: .8rem 0 0 2rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: .75rem;
}

.timeline-date-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.timeline-date-list > li {
  padding: .45rem 0;
}

.timeline-date-list > li + li {
  border-top: 1px solid var(--line);
}

.timeline-track {
  display: grid;
  grid-template-columns: 1.5rem minmax(0, 1fr);
  gap: .5rem;
  align-items: center;
  min-height: 1.75rem;
  margin-bottom: .2rem;
}

.timeline-slot {
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--paper);
  font-size: .75rem;
  font-weight: 700;
}

.timeline-line {
  position: relative;
  height: 1px;
  background: var(--line);
}

.date-band {
  position: absolute;
  top: 50%;
  left: var(--date-left);
  width: var(--date-width);
  height: .55rem;
  transform: translateY(-50%);
  border-radius: 1rem;
  background: var(--green);
}

.date-band.timeline-point {
  width: .65rem;
  height: .65rem;
  transform: translate(-50%, -50%);
}

.timeline-date-detail {
  margin-inline-start: 2rem;
}

.timeline-credit {
  margin-top: .2rem;
}

.timeline-credit summary {
  cursor: pointer;
}

.timeline-credit a + a {
  margin-inline-start: .5rem;
}

.timeline-order-selection {
  padding: .65rem .85rem;
  border-left: 3px solid var(--green);
  background: var(--mint);
}

.timeline-order-selection ol {
  margin-block: .25rem 0;
  padding-inline-start: 1.5rem;
}

.timeline-challenge a {
  text-decoration: underline;
  text-underline-offset: .18em;
}

@media (max-width: 480px) {
  .timeline-options {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
}