.cart-library {
  width: min(100% - 2rem, 64rem);
  margin-block: clamp(2rem, 7vw, 5rem) 4rem;
}
.cart-intro {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: end;
  gap: 1.25rem 2rem;
  margin-bottom: 3rem;
}
.cart-intro h1 { letter-spacing: -.035em; }
.cart-intro p { max-width: 53ch; margin-bottom: 0; }
.cart-pack {
  display: grid;
  gap: .15rem;
  padding: .65rem 1rem;
  border: 1px solid currentColor;
  border-radius: .65rem;
  text-decoration: none;
}
.cart-pack:hover { text-decoration: underline; }
.cart-pack span { font-size: .85em; font-weight: 400; }
.cart-group + .cart-group { margin-top: 2.25rem; }
.cart-group ul { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.cart-group li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) max-content minmax(12rem, 15rem) max-content;
  align-items: center;
  gap: .65rem 1.25rem;
  padding: .85rem 0;
  border-bottom: 1px solid var(--line);
}
.cart-description h3, .cart-description p { margin: 0; }
.cart-description p { font-size: .9em; margin-top: .2rem; }
.cart-duration { font-size: .9em; font-variant-numeric: tabular-nums; }
.cart-group audio { display: block; width: 100%; height: 44px; }
.cart-download { display: inline-flex; align-items: center; min-height: 44px; }
.cart-usage { margin-top: 2rem; max-width: 65ch; }
@media (max-width: 44em) {
  .cart-group li { grid-template-columns: minmax(0, 1fr) max-content; }
}
@media (max-width: 23em) {
  .cart-group audio { grid-column: 1 / -1; }
  .cart-download { justify-self: start; }
}

.cart-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px solid var(--line);
}
.cart-tabs a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: .35rem .9rem;
  color: var(--fg);
  border-bottom: 3px solid transparent;
  text-decoration: none;
}
.cart-tabs a:hover { text-decoration: underline; }
.cart-tabs a[aria-current="page"] {
  border-bottom-color: var(--accent);
  color: var(--accent);
}
.cart-empty { margin-block: 1.5rem 3rem; }