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);
}

.cf {
  width: min(360px, 88vw);
}

.cf__viewport {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  perspective: 640px;
  padding: 0 40%;
  box-sizing: border-box;
  scrollbar-width: none;
}
.cf__viewport::-webkit-scrollbar {
  display: none;
}

.cf__track {
  display: flex;
  align-items: center;
  width: max-content;
  transform-style: preserve-3d;
}

.cf__slide {
  flex: 0 0 min(120px, 30vw);
  aspect-ratio: 3/4;
  margin-right: 16px;
  border-radius: 16px;
  scroll-snap-align: center;
  transform-style: preserve-3d;
}
.cf__slide:last-child {
  margin-right: 0;
}

.cf__slide--1, .cf__slide--5 {
  transform: rotateY(38deg) scale(0.72);
  opacity: 0.55;
}

.cf__slide--2, .cf__slide--4 {
  transform: rotateY(24deg) scale(0.86);
  opacity: 0.8;
}

.cf__slide--3 {
  transform: rotateY(0deg) scale(1);
}

.cf__slide--4 {
  transform: rotateY(-24deg) scale(0.86);
  opacity: 0.8;
}

.cf__slide--5 {
  transform: rotateY(-38deg) scale(0.72);
  opacity: 0.55;
}

.cf__slide--1 {
  background: linear-gradient(160deg, #2f6df6, #d6ddeb);
}

.cf__slide--2 {
  background: linear-gradient(160deg, #ff4d1f, #ebdbd6);
}

.cf__slide--3 {
  background: linear-gradient(160deg, #c2ae82, #ffd23f);
}

.cf__slide--4 {
  background: linear-gradient(160deg, #17141a, #4a3f5c);
}

.cf__slide--5 {
  background: linear-gradient(160deg, #2f6df6, #ff4d1f);
}

.cf.is-demo .cf__track {
  animation: cf-loop 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes cf-loop {
  0%, 8% {
    transform: translateX(0px);
  }
  50%, 58% {
    transform: translateX(-140px);
  }
  100% {
    transform: translateX(0px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .cf.is-demo .cf__track {
    animation: none !important;
  }
  .cf__viewport {
    scroll-behavior: auto;
  }
}