/* v0.4.3 — explicit target feedback for external file drag; no activation for node move. */
@keyframes twinDropPulse {0%,100%{stroke-opacity:1;stroke-width:4}50%{stroke-opacity:.35;stroke-width:7}}
.twin-drop-focus{animation:twinDropPulse .75s ease-in-out infinite;filter:drop-shadow(0 0 3px #f59e0b)}

/* v0.4.5 topology readability */