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);
}

.bgslow {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: grid;
  place-items: center;
}
.bgslow__bg {
  position: absolute;
  inset: -20% -10%;
  background: radial-gradient(#fff7e6 0 46px, transparent 47px) 24% 30%, radial-gradient(#fff7e6 0 30px, transparent 31px) 78% 62%, radial-gradient(#fff7e6 0 20px, transparent 21px) 55% 82%;
  background-repeat: no-repeat;
  opacity: 0.5;
}
@supports (animation-timeline: scroll()) {
  .bgslow__bg {
    animation: drift linear both;
    animation-timeline: scroll(root);
  }
}
@supports not (animation-timeline: scroll()) {
  .bgslow__bg {
    transform: none;
  }
}
.bgslow__title {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 14px 22px;
  border-radius: 999px;
  background: #2f6df6;
  color: #fff;
  font: 700 clamp(15px, 5vw, 19px)/1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

@keyframes drift {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-24px);
  }
}
.stage.is-demo .bgslow__bg {
  animation: drift-loop 2s ease-in-out infinite;
}

@keyframes drift-loop {
  0%, 100% {
    transform: translateY(24px);
  }
  50% {
    transform: translateY(-24px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .bgslow__bg, .stage.is-demo .bgslow__bg {
    animation: none !important;
    transform: none;
  }
}