/* FIX11: hide known old navigation chrome, never the canonical WDR10 header. */
html body .wdr11-legacy-hidden { display: none !important; }
html body:has(#wdr10-site-header) > header.site-header:not(#wdr10-site-header),
html body:has(#wdr10-site-header) > header.topbar:not(#wdr10-site-header),
html body:has(#wdr10-site-header) > header.legacy-header:not(#wdr10-site-header),
html body:has(#wdr10-site-header) > .site-shell > header.site-header,
html body:has(#wdr10-site-header) > .site-shell > .site-header,
html body:has(#wdr10-site-header) > .page-shell > header.site-header,
html body:has(#wdr10-site-header) > .page-shell > .site-header { display: none !important; }