.scoreboard {
  background: #222;
  padding: 20px;
  border: 8px solid #555;
  border-radius: 8px;
  text-align: center;
  color: #fff;
  font-family: 'Courier New', monospace;
}

.scoreboard .digit {
  position: relative;
  display: inline-block;
  width: 1ch;
  font-size: var(--font-size);
  margin: 0 0.1ch;
}

.digit::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--bulb-size);
  height: var(--bulb-size);
  background: radial-gradient(circle, rgba(255,200,100,0.8), rgba(180,120,80,0.2));
  border-radius: 50%;
  transform: translate(-50%, -50%);
  filter: blur(2px);
  z-index: -1;
  animation: glow 2s infinite alternate;
}

@keyframes glow {
  from { opacity: 0.6; }
  to { opacity: 1; }
}