/* class7-math-ch4-shorthand.css - Chapter 4 Tier 5 "Shorthand & Substitution"
   (shSeq, shHide, shRead, shOne, shTwo, shScore, shFan).
   Almost everything is shared (class7-math-ch2-common.css + class7-math-ch4-common.css); only Tier 5 touches live here. */
/* input-output fan: the arrows from the expression draw themselves in */
.c72-overlay[id^="shfan"] .c72-svg path[stroke-linecap="round"] { stroke-dasharray: 90; stroke-dashoffset: 90; animation: c74-draw .9s ease forwards; }
@keyframes c74-draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) {
    .c72-overlay[id^="shfan"] .c72-svg path { stroke-dashoffset: 0 !important; }
}