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);
}

.stage {
  padding: clamp(8px, 2.4vw, 16px);
}

.card {
  position: relative;
  width: min(150px, 48vw);
  aspect-ratio: 4/3;
  border-radius: 16px;
  overflow: hidden;
  background: #ffffff;
  box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
  outline: none;
  cursor: pointer;
}

.card__media {
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, #2f6df6 0%, #17141a 100%);
}

.card__body {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 8px 12px;
}

.card__title {
  margin: 0 0 4px;
  font-weight: 700;
  font-size: clamp(11px, 3.2vw, 13px);
  line-height: 1.3;
  font-family: inherit;
  color: #ffffff;
}

.card__meta {
  margin: 0;
  font-weight: 500;
  font-size: clamp(10px, 2.8vw, 11px);
  line-height: 1.3;
  font-family: inherit;
  color: rgba(255, 255, 255, 0.85);
}

.badge {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2;
  padding: 4px 8px;
  border-radius: 999px;
  background: #2f6df6;
  color: #17141a;
  font-weight: 700;
  font-size: 11px;
  line-height: 1;
  font-family: inherit;
  transform: scale(0);
  transition: transform 220ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

.card:hover .badge,
.card:focus-visible .badge,
.card:active .badge {
  transform: scale(1);
}

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

@keyframes badge-loop {
  0%, 15% {
    transform: scale(0);
  }
  35% {
    transform: scale(1.25);
  }
  50% {
    transform: scale(0.92);
  }
  65%, 80% {
    transform: scale(1);
  }
  100% {
    transform: scale(0);
  }
}
@media (prefers-reduced-motion: reduce) {
  .badge {
    transition: none;
  }
  .card.is-demo .badge {
    animation: none;
    transform: scale(1);
  }
}