/* A light, monochrome thread; the real pointer and native touch scroll stay intact. */
#pointer-trail{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:135;mix-blend-mode:difference;contain:strict;visibility:hidden}
#pointer-trail[data-activity="moving"],#pointer-trail[data-activity="pressed"],#pointer-trail[data-activity="releasing"]{visibility:visible}
@media(prefers-reduced-motion:reduce){#pointer-trail{display:none}}