/* Virtual joystick anchored where the player puts their thumb. */
.td-base{
  position:fixed; display:none;
  width:130px; height:130px; border-radius:50%;
  background:#00f5ff14; border:1px solid #00f5ff44;
  pointer-events:none; z-index:4;
}
.td-knob{
  position:fixed; display:none;
  width:54px; height:54px; border-radius:50%;
  background:#00f5ff55; border:2px solid #00f5ff;
  box-shadow:0 0 18px #00f5ffaa;
  pointer-events:none; z-index:5;
}