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

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

.stage {
  padding: clamp(6px, 2.4vw, 16px);
}

.badge {
  display: inline-block;
  border: 4px solid;
  border-image-slice: 1;
  border-image-source: linear-gradient(90deg, #c2361a, #ff4d1f, #ffd23f, #2f6df6, #c2361a);
  border-radius: 4px;
  padding: 14px 22px;
  font-weight: 700;
  font-size: clamp(13px, 3.6vw, 15px);
  line-height: 1;
  font-family: inherit;
  color: #17141a;
  background: #ffffff;
}

.badge.is-demo {
  animation: hue 2s linear infinite;
}

@keyframes hue {
  to {
    filter: hue-rotate(360deg);
  }
}
@media (prefers-reduced-motion: reduce) {
  .badge.is-demo {
    animation: none;
    filter: none;
  }
}