.archive-intro,
.archive-list,
.archive-return {
  margin-top: 1.4rem;
  padding: clamp(2.2rem, 4.5vw, 3.75rem);
  border: 1px solid var(--line);
  border-radius: 2rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.archive-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 2rem;
}

.archive-intro h1 {
  max-width: 48rem;
  font-size: clamp(2.8rem, 5vw, 4.35rem);
}

.archive-intro > div > p:last-child {
  max-width: 44rem;
  margin: 1.2rem 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.year-nav {
  display: grid;
  justify-items: end;
  gap: 0.55rem;
}

.year-nav span {
  color: var(--muted);
  font-size: 0.6rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.year-nav a {
  min-width: 4.2rem;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 850;
  text-align: center;
  text-decoration: none;
}

.archive-list-heading {
  margin-bottom: 1.5rem;
}

.archive-list-heading h2,
.archive-return h2 {
  margin-bottom: 0;
  font-size: clamp(2.1rem, 4vw, 3.4rem);
  letter-spacing: -0.055em;
  line-height: 0.96;
}

.archive-week {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: var(--paper);
}

.archive-week summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.25rem;
  cursor: pointer;
  list-style: none;
}

.archive-week summary::-webkit-details-marker {
  display: none;
}

.archive-week summary span:first-child {
  display: grid;
  gap: 0.25rem;
}

.archive-week summary strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.35rem;
  font-weight: 400;
}

.archive-week summary small {
  color: var(--muted);
  font-size: 0.65rem;
}

.summary-marker {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--rose-deep);
  background: var(--surface);
  font-size: 1.2rem;
  transition: transform 150ms ease;
}

.archive-week[open] .summary-marker {
  transform: rotate(45deg);
}

.archive-week-body {
  padding: 0 1.25rem 1.25rem;
  border-top: 1px solid var(--line);
}

.archive-week .week-list {
  margin-top: 0;
  border-top: 0;
}

.archive-week .session-card {
  grid-template-columns: 3rem minmax(0, 1fr);
}

.archive-return {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  background: var(--peach-soft);
}

.archive-return .eyebrow {
  margin-bottom: 0.65rem;
}

@media (max-width: 44rem) {
  .archive-intro,
  .archive-list,
  .archive-return {
    margin-top: 0.9rem;
    padding: 1.85rem 1.35rem;
    border-radius: 1.35rem;
  }

  .archive-intro {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .year-nav {
    justify-items: start;
  }

  .archive-week summary {
    padding: 1rem;
  }

  .archive-week-body {
    padding: 0 0.85rem 0.85rem;
  }

  .archive-return {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .summary-marker {
    transition: none;
  }
}