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);
}

.hero {
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
  width: clamp(220px, 62vmin, 300px);
  aspect-ratio: 4/3;
  border-radius: 16px;
  background: #17141a;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 8px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -60% -60%;
  background: conic-gradient(from 0deg, #d5a9b6, #a994ca, #a3c6d1, #d5a9b6);
  opacity: 0.55;
  pointer-events: none;
}

.hero__eyebrow, .hero__title {
  position: relative;
  z-index: 1;
  margin: 0;
  color: #fff7e6;
}

.hero__eyebrow {
  font-weight: 700;
  font-size: clamp(11px, 3vw, 12px);
  line-height: 1;
  font-family: inherit;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero__title {
  font-weight: 800;
  font-size: clamp(22px, 6vw, 30px);
  line-height: 1.2;
  font-family: inherit;
}

.stage.is-demo .hero::before {
  animation: drift 2s ease-out infinite;
}

@keyframes drift {
  0% {
    transform: translate(-6%, -4%) rotate(0deg);
  }
  50% {
    transform: translate(6%, 5%) rotate(180deg);
  }
  100% {
    transform: translate(-6%, -4%) rotate(360deg);
  }
}
@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .hero::before {
    animation: none;
    transform: none;
  }
}