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);
}

.mockup {
  box-sizing: border-box;
  width: clamp(220px, 62vmin, 300px);
  aspect-ratio: 4/3;
  border-radius: 16px;
  background: #fff7e6;
  border: 1px solid rgba(23, 20, 26, 0.12);
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  overflow: hidden;
}

.mockup__bar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  background: rgba(23, 20, 26, 0.06);
}

.mockup__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(23, 20, 26, 0.18);
}

.mockup__dot:first-child {
  background: #2f6df6;
}

.mockup__body {
  display: grid;
  gap: 12px;
  padding: 24px;
}

.mockup__block {
  display: block;
  height: 16px;
  border-radius: 4px;
  background: rgba(23, 20, 26, 0.1);
}

.mockup__block--lg {
  width: 72%;
}

.mockup__block--sm {
  width: 46%;
}

.stage.is-demo .mockup {
  animation: float 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes float {
  0% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-16px) rotate(-1.2deg);
  }
  100% {
    transform: translateY(0) rotate(0deg);
  }
}
@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .mockup {
    animation: none;
    transform: none;
  }
}