html { color-scheme: light; }
html[data-theme="dark"] { color-scheme: dark; }
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) { color-scheme: dark; }
}
.theme-switcher {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  max-width: 100%;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
}
.theme-switcher[hidden] { display: none !important; }
.theme-switcher select {
  box-sizing: border-box;
  min-height: 44px;
  min-width: 104px;
  max-width: 100%;
  padding: 8px 12px;
  border: 1px solid currentColor;
  border-radius: 8px;
  color: inherit;
  background: transparent;
  font: inherit;
  cursor: pointer;
  touch-action: manipulation;
}
.theme-switcher select option { background: Canvas; color: CanvasText; }
.theme-switcher select:focus-visible { outline: 3px solid currentColor; outline-offset: 3px; }
.hub-brand-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }