/* Theme-specific component design; shared structure lives in css/public. */
.site-header { --surface: var(--navigation-surface);
  --ink: var(--navigation-text);
  --muted: var(--navigation-muted);
  --line: var(--navigation-line);
  color-scheme: dark;
  background: var(--navigation-surface);
  color: var(--navigation-text); }