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);
}

.stage {
  position: relative;
  overflow: hidden;
}

.blob {
  position: absolute;
  width: 42%;
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(12px);
  opacity: 0.9;
}

.b1 {
  background: radial-gradient(#2f6df6, transparent 65%);
  top: -8%;
  left: -6%;
  animation: drift1 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.b2 {
  background: radial-gradient(#fff7e6, transparent 65%);
  bottom: -12%;
  right: -4%;
  animation: drift2 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
  animation-delay: -0.6s;
}

.b3 {
  background: radial-gradient(#17141a, transparent 65%);
  top: 28%;
  right: 22%;
  opacity: 0.65;
  animation: drift3 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
  animation-delay: -1.2s;
}

@keyframes drift1 {
  0%, 100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(48px, 32px);
  }
}
@keyframes drift2 {
  0%, 100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(-42px, -26px);
  }
}
@keyframes drift3 {
  0%, 100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(24px, -38px);
  }
}
.hint {
  position: relative;
  margin: 0;
  padding: 10px 20px;
  border-radius: 999px;
  background: rgba(23, 20, 26, 0.15);
  color: #17141a;
  font: 700 clamp(14px, 4vw, 18px)/1.3 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

@media (prefers-reduced-motion: reduce) {
  .blob {
    animation: none;
  }
}