.resource-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  margin-block: 0 24px;
  position: relative;
  z-index: 40;
  color: var(--abound-ink-soft);
  font: 600 16px/1.4 var(--abound-font);
}
.resource-location { max-width: 40ch; }
.resource-nav :focus-visible { outline-color: var(--abound-focus) !important; }
.resource-menu { position: relative; flex: 0 0 auto; }
.resource-menu summary {
  cursor: pointer;
  min-height: 48px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--abound-border-strong);
  border-radius: var(--abound-radius-sm);
  background: var(--abound-surface);
  color: var(--abound-purple-deep);
  list-style: none;
}
.resource-menu summary::-webkit-details-marker { display: none; }
.resource-menu summary::after { content: '\2304'; }
.resource-menu[open] summary { background: var(--abound-lavender); }
.resource-menu[open] summary::after { content: '\2303'; }
.resource-menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: min(360px, calc(100vw - 32px));
  max-height: 70vh;
  overflow-y: auto;
  border: 1px solid var(--abound-border-strong);
  border-radius: var(--abound-radius-sm);
  padding: 8px;
  background: var(--abound-surface);
  box-shadow: var(--abound-shadow);
}
.resource-menu ul { list-style: none; padding: 0; margin: 0; }
.resource-menu li { margin: 0; padding: 0; border: 0; }
.resource-menu a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 16px;
  color: var(--abound-ink);
  font-size: 16px;
  text-decoration: none;
  border-radius: var(--abound-radius-sm);
}
.resource-menu a:hover, .resource-menu a:focus-visible { background: var(--abound-surface-muted); }
.resource-menu a[aria-current] { color: var(--abound-purple-deep); background: var(--abound-lavender); font-weight: 700; }
.research-nav .resource-nav { flex: 1; margin: 0; }
.research-nav { gap: 24px; }
.ai-masthead .resource-nav { flex: 1; margin: 0; }
@media (max-width: 640px) {
  .resource-nav { gap: 8px; }
  .resource-location { font-size: 16px; }
  .resource-menu summary { padding-inline: 12px; }
  .research-nav { flex-wrap: wrap; }
  .research-nav .resource-nav { flex: none; width: 100%; }
}
@media print { .resource-nav { display: none !important; } }