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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.pill {
  position: relative;
  display: inline-block;
  padding: 8px 24px;
  border-radius: 999px;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.08em;
  color: #fff;
  background: #2f6df6;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  overflow: hidden;
}

.pill__glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #ffd23f, #c3add7);
  opacity: 0;
}

.pill__text {
  position: relative;
}

.stage.is-demo .pill__glow {
  animation: glow-cross 2s ease-out infinite;
}

@keyframes glow-cross {
  0%, 10% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  90%, 100% {
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .pill__glow {
    animation: none;
    opacity: 0.5;
  }
}