html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  min-height: 100vh;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  scroll-snap-type: y mandatory;
}

.head {
  position: sticky;
  top: 0;
  z-index: 1;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(16px, 5vw, 24px);
  background: #17141a;
}
.head__logo {
  color: #fff7e6;
  font-weight: 800;
  font-size: 18px;
  line-height: 1;
  font-family: inherit;
  letter-spacing: 0.04em;
}
.head__dots {
  display: flex;
  gap: 8px;
}
.head__dots i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1);
  transition: transform 220ms cubic-bezier(0.2, 1.4, 0.4, 1), background 220ms cubic-bezier(0.2, 1.4, 0.4, 1);
}
.head__dots i.is-current {
  background: #fff7e6;
  transform: scale(1.4);
}

.head.is-demo .head__dots i:nth-child(1) {
  animation: dot-1 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

.head.is-demo .head__dots i:nth-child(2) {
  animation: dot-2 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

.head.is-demo .head__dots i:nth-child(3) {
  animation: dot-3 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes dot-1 {
  0%, 4% {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1);
  }
  5%, 25% {
    background: #fff7e6;
    transform: scale(1.4);
  }
  26%, 100% {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1);
  }
}
@keyframes dot-2 {
  0%, 37% {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1);
  }
  38%, 58% {
    background: #fff7e6;
    transform: scale(1.4);
  }
  59%, 100% {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1);
  }
}
@keyframes dot-3 {
  0%, 70% {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1);
  }
  71%, 91% {
    background: #fff7e6;
    transform: scale(1.4);
  }
  92%, 100% {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1);
  }
}
.snap-section {
  height: clamp(24px, 13vh, 78px);
  display: grid;
  place-items: center;
  scroll-snap-align: start;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.snap-section p {
  margin: 0;
  color: #fff7e6;
  font-weight: 800;
  font-size: 28px;
  line-height: 1;
  font-family: inherit;
  opacity: 0.35;
}

@media (prefers-reduced-motion: reduce) {
  .head__dots i {
    transition: none;
  }
  .head.is-demo .head__dots i {
    animation: none !important;
  }
  .head.is-demo .head__dots i:first-child {
    background: #fff7e6;
    transform: scale(1.4);
  }
}