.beam-rail{
  position:absolute;
  left:70px;
  right:70px;
  bottom:22px;
  height:22px;
  z-index:1;
  pointer-events:none;
}

.beam-rail-line{
  position:absolute;
  left:0;
  right:0;
  top:50%;
  height:2px;
  transform:translateY(-50%);
  border-radius:999px;
  background:linear-gradient(
    90deg,
    rgba(119,216,255,0) 0%,
    rgba(119,216,255,.95) 16%,
    rgba(255,255,255,.95) 50%,
    rgba(119,216,255,.95) 84%,
    rgba(119,216,255,0) 100%
  );
  box-shadow:
    0 0 8px rgba(119,216,255,.45),
    0 0 18px rgba(119,216,255,.25);
  opacity:.92;
}

.beam-rail-spark{
  position:absolute;
  top:50%;
  width:78px;
  height:4px;
  border-radius:999px;
  transform:translateY(-50%);
  background:linear-gradient(
    90deg,
    rgba(255,255,255,0) 0%,
    rgba(255,255,255,.98) 35%,
    rgba(119,216,255,.95) 100%
  );
  box-shadow:
    0 0 10px rgba(255,255,255,.55),
    0 0 22px rgba(119,216,255,.45);
  opacity:0;
}

.beam-rail-spark-a{
  animation:railSweep 1.8s ease-in-out infinite;
}

.beam-rail-spark-b{
  animation:railSweep 1.8s ease-in-out infinite .9s;
}

@keyframes railSweep{
  0%{ left:0; opacity:0; }
  12%{ opacity:1; }
  72%{ opacity:1; }
  100%{ left:calc(100% - 78px); opacity:0; }
}

.beam-svg-wrap{
  position:absolute;
  inset:0;
  z-index:3;
  pointer-events:none;
  overflow:hidden;
}

.beam-svg{
  width:100%;
  height:100%;
  display:block;
  overflow:visible;
}

.beam-path{
  fill:none;
  stroke-linecap:round;
  stroke-width:3.4;
  opacity:.96;
  filter:
    drop-shadow(0 0 8px rgba(119,216,255,.32))
    drop-shadow(0 0 18px rgba(119,216,255,.18));
}

.beam-path.inbound{
  stroke:url(#beamInboundGradient);
}

.beam-path.outbound{
  stroke:url(#beamOutboundGradient);
}

.beam-path.animate{
  animation:beamSignal 1.05s linear 5;
}

@keyframes beamSignal{
  0%{
    stroke-dashoffset:var(--beam-len);
    opacity:0;
  }
  8%{
    opacity:1;
  }
  52%{
    opacity:.62;
  }
  100%{
    stroke-dashoffset:0;
    opacity:1;
  }
}