.catalogue-download { position: relative; }
.catalogue-download summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0;
  color: var(--blue);
  font-size: .9rem;
  font-weight: 800;
  cursor: pointer;
  list-style: none;
}
.catalogue-download summary::-webkit-details-marker { display: none; }
.catalogue-download summary span {
  width: 7px;
  height: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform .16s;
}
.catalogue-download[open] summary span { transform: rotate(225deg) translate(-2px, -1px); }
.catalogue-download:not([open]) .catalogue-menu { display: none; }
.catalogue-download .catalogue-menu {
  position: absolute;
  top: calc(100% + 17px);
  right: 0;
  z-index: 30;
  width: 290px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 18px 42px rgba(21, 22, 28, .18);
}
.catalogue-download .catalogue-menu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 16px;
  color: var(--ink);
  font-size: .85rem;
  line-height: 1.25;
  text-decoration: none;
}
.catalogue-download .catalogue-menu a + a { border-top: 1px solid var(--line); }
.catalogue-download .catalogue-menu a:hover { color: #fff; background: var(--blue); }
.catalogue-download .catalogue-menu b { flex: none; color: var(--blue); font-size: .66rem; letter-spacing: .1em; }
.catalogue-download .catalogue-menu a:hover b { color: #fff; }

/* The compact header hides ordinary navigation links.  Catalogue choices
   remain visible when the native dropdown is opened. */
@media (max-width: 900px) {
  .site-header nav .catalogue-download .catalogue-menu a { display: flex; }
}

@media (max-width: 560px) {
  .catalogue-download .catalogue-menu {
    position: fixed;
    top: 104px;
    right: 14px;
    left: 14px;
    width: auto;
  }
}