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);
}

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

.ra__radio {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.ra__viewport {
  overflow: hidden;
  border-radius: 16px;
}

.ra__track {
  display: flex;
  width: 400%;
  transition: transform 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

#ra-1:checked ~ .ra__viewport .ra__track {
  transform: translateX(0%);
}

#ra-2:checked ~ .ra__viewport .ra__track {
  transform: translateX(-25%);
}

#ra-3:checked ~ .ra__viewport .ra__track {
  transform: translateX(-50%);
}

.ra__slide {
  flex: 0 0 25%;
  aspect-ratio: 16/9;
  position: relative;
  display: grid;
}

.ra__slide--1 {
  background: linear-gradient(135deg, #17141a, #4a3f5c);
}

.ra__slide--2 {
  background: linear-gradient(135deg, #ff4d1f, #ebdbd6);
}

.ra__slide--3 {
  background: linear-gradient(135deg, #2f6df6, #d6ddeb);
}

.ra__prev, .ra__next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.85);
  color: #17141a;
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
}

.ra__prev {
  left: 12px;
}

.ra__next {
  right: 12px;
}

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

@keyframes ra-loop {
  0%, 8% {
    transform: translateX(0%);
  }
  31%, 39% {
    transform: translateX(-25%);
  }
  62%, 70% {
    transform: translateX(-50%);
  }
  92%, 100% {
    transform: translateX(-75%);
  }
}
@media (prefers-reduced-motion: reduce) {
  .ra__track {
    transition: none;
  }
  .ra.is-demo .ra__viewport .ra__track {
    animation: none !important;
  }
}