html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.icon-wrap {
  position: relative;
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
}

.icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: #ffb020;
  box-shadow: 0 0 8px #ffb020, 0 0 24px rgba(255, 176, 32, 0.6);
}

.ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid #ffb020;
  opacity: 0;
}

.stage.is-demo .ring--a {
  animation: ring 2s ease-out infinite;
}

.stage.is-demo .ring--b {
  animation: ring 2s ease-out infinite;
  animation-delay: 1s;
}

@keyframes ring {
  0% {
    transform: scale(0.7);
    opacity: 0.8;
  }
  70% {
    transform: scale(1.7);
    opacity: 0;
  }
  100% {
    transform: scale(1.7);
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .ring--a, .stage.is-demo .ring--b {
    animation: none;
    opacity: 0;
  }
}