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);
}

.sl {
  width: min(390px, 88vw);
  height: clamp(150px, 62vh, 216px);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}

.sl__scroll {
  height: 100%;
  overflow-y: auto;
  scroll-timeline: --sl-scroll block;
  scrollbar-width: none;
}
.sl__scroll::-webkit-scrollbar {
  display: none;
}

.sl__inner {
  height: 280%;
}

.sl__pin {
  position: sticky;
  top: 0;
  height: 35.7142857143%;
  display: grid;
  overflow: hidden;
}

.sl__dim {
  grid-area: 1/1;
  display: grid;
  background: repeating-linear-gradient(45deg, #241f2b 0 12px, #1d1924 12px 24px);
}

.sl__dimm {
  align-self: start;
  justify-self: center;
  margin-top: 14%;
  padding: 4px 16px;
  border-radius: 999px;
  color: rgba(255, 247, 230, 0.5);
  border: 1px dashed rgba(255, 247, 230, 0.35);
  font: 700 13px/1.4 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

.sl__spot {
  grid-area: 1/1;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 50% 42%, rgba(255, 247, 230, 0.28), transparent 58%), linear-gradient(135deg, #2f6df6, #d6ddeb);
  clip-path: circle(14% at 50% 50%);
}

.sl__cap {
  padding: 4px 16px;
  border-radius: 999px;
  background: rgba(23, 20, 26, 0.45);
  color: #fff7e6;
  font: 700 14px/1.4 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

@supports (animation-timeline: scroll()) {
  .sl__spot:not(.is-demo) {
    animation: sl-open linear both;
    animation-timeline: --sl-scroll;
  }
}
@supports not (animation-timeline: scroll()) {
  .sl__spot:not(.is-demo) {
    clip-path: circle(75% at 50% 50%);
  }
}
@keyframes sl-open {
  from {
    clip-path: circle(14% at 50% 50%);
  }
  to {
    clip-path: circle(75% at 50% 50%);
  }
}
.sl__spot.is-demo {
  animation: sl-loop 2s ease-out infinite;
}

@keyframes sl-loop {
  0%, 10% {
    clip-path: circle(14% at 50% 50%);
  }
  55%, 88% {
    clip-path: circle(75% at 50% 50%);
  }
  100% {
    clip-path: circle(14% at 50% 50%);
  }
}
@media (prefers-reduced-motion: reduce) {
  .sl__spot.is-demo {
    animation: none !important;
    clip-path: circle(75% at 50% 50%) !important;
  }
  .sl__scroll {
    scroll-behavior: auto;
  }
}