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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ffd23f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.ib {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.ib__icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #c2361a;
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 16px;
  line-height: 1;
  font-family: inherit;
  transform-origin: center;
}

.ib__msg {
  margin: 0;
  color: #17141a;
  font-weight: 500;
  font-size: 12px;
  line-height: 1.3;
  font-family: inherit;
}

@keyframes ib-bounce {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  20% {
    transform: translateY(-10px) scale(1.15);
  }
  40% {
    transform: translateY(0) scale(0.95);
  }
  55% {
    transform: translateY(-4px) scale(1.05);
  }
  70% {
    transform: translateY(0) scale(1);
  }
}
.ib__icon.ib--bounce {
  animation: ib-bounce 700ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

.ib.is-demo .ib__icon {
  animation: ib-bounce 700ms cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@media (prefers-reduced-motion: reduce) {
  .ib__icon.ib--bounce,
  .ib.is-demo .ib__icon {
    animation: none !important;
  }
}