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);
}

.ss-grid {
  width: min(320px, 88vw);
  aspect-ratio: 340/190;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 8px;
}

.ss-tile {
  border-radius: 8px;
  padding: 12px;
  box-sizing: border-box;
  color: #17141a;
  background: rgba(23, 20, 26, 0.06);
  font: 600 12px/1 -apple-system, "Segoe UI", sans-serif;
  display: flex;
  align-items: flex-end;
  opacity: 0;
  transform: translateY(16px);
}

.ss-tile__tag {
  opacity: 0.8;
}

.ss-tile {
  transition: opacity 400ms ease-out, transform 400ms ease-out;
}

.ss-tile.in {
  opacity: 1;
  transform: translateY(0);
}

.ss-tile:nth-child(1).in {
  transition-delay: 0ms;
}

.ss-tile:nth-child(2).in {
  transition-delay: 160ms;
}

.ss-tile:nth-child(3).in {
  transition-delay: 320ms;
}

.ss-tile:nth-child(4).in {
  transition-delay: 480ms;
}

@keyframes ss-tile-in {
  0% {
    opacity: 0;
    transform: translateY(16px);
  }
  30% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}
.ss-grid.is-demo .ss-tile {
  animation: ss-tile-in 2s ease-out infinite;
  animation-fill-mode: both;
}

.ss-grid.is-demo .ss-tile:nth-child(1) {
  animation-delay: 0ms;
}

.ss-grid.is-demo .ss-tile:nth-child(2) {
  animation-delay: 160ms;
}

.ss-grid.is-demo .ss-tile:nth-child(3) {
  animation-delay: 320ms;
}

.ss-grid.is-demo .ss-tile:nth-child(4) {
  animation-delay: 480ms;
}

@media (prefers-reduced-motion: reduce) {
  .ss-tile, .ss-tile.in,
  .ss-grid.is-demo .ss-tile {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}