.agent-journey{position:absolute;left:0;top:0;width:0;height:0;z-index:61;pointer-events:none}
.agent-journey .flyer{
  position:absolute;left:0;top:0;border-radius:50%;
  border:1.5px solid rgba(122,255,155,.32);
  will-change:transform;
}
.agent-journey .flyer img{width:100%;height:100%;display:block;border-radius:50%;max-width:none}
/* No transition. The flyer switches on instantly, so a fade here left a window
   with the real agent half gone and its double not yet shown — which read as
   the astronaut briefly disappearing. Both sides swap on the same frame. */
.sec-ring .node.departed{opacity:0;pointer-events:none}