the infinity keyword feels a bit too good to be true without seeing how it handles -iteration-count variations. if we cant precisely control the transition between loops, it might just become another way to create
unpredictable layout shifts ]. im more skeptical about
sibling-index()
because of the potential performance hit on large lists. if u have a thousand elements, calculating that index dynamically during an animation could be a nightmare for the compositor. we need to see actual benchmarks before deciding it replaces our current @keyframes logic. ⚠