Library logo sources
The site animates the original library marks. The SVG includes in
_includes/library-logos/ preserve the original visible geometry and colours,
with prefixed IDs and classes for signal, circuit and light effects. SPD Learn
uses its unchanged official PNG with a subtle surface highlight.
_sass/_library-logos.scss defines motion; assets/js/library-logos.js handles
pause, offscreen suspension and reduced motion. Run
node scripts/check-library-logos.cjs to check the controls and SVG/image readiness.