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);
}

.panel {
  box-sizing: border-box;
  position: relative;
  width: clamp(220px, 62vmin, 300px);
  padding: 24px;
  display: grid;
  gap: 12px;
}

.panel__bar {
  display: block;
  height: 12px;
  border-radius: 4px;
  background: rgba(255, 247, 230, 0.16);
}

.panel__bar--lg {
  width: 78%;
}

.panel__bar--sm {
  width: 52%;
}

.badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  border-radius: 999px;
  background: #62b29d;
  color: #17141a;
  font-weight: 800;
  font-size: clamp(11px, 3vw, 12px);
  line-height: 1;
  font-family: inherit;
  letter-spacing: 0.04em;
  opacity: 0;
  transform: translateX(40px);
}

.stage.is-demo .badge {
  animation: slide-in 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes slide-in {
  0% {
    opacity: 0;
    transform: translateX(40px);
  }
  30% {
    opacity: 1;
    transform: translateX(0);
  }
  65% {
    opacity: 1;
    transform: translateX(0);
  }
  100% {
    opacity: 0;
    transform: translateX(40px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .badge {
    animation: none;
    opacity: 1;
    transform: none;
  }
}