.oa-header-dark {
  background: var(--oa-bg-darker);
  border-bottom: 1px solid var(--oa-border-darkest);
  transition: box-shadow .3s ease;
}
.oa-header-dark.is-scrolled {
  box-shadow: 0 4px 24px rgba(0, 0, 0, .24);
}
body.admin-bar .oa-header-dark { top: 32px; }
@media (max-width: 782px) {
  body.admin-bar .oa-header-dark { top: 46px; }
}