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);
}

.spinner {
  width: clamp(56px, 16vw, 84px);
  height: clamp(56px, 16vw, 84px);
  border-radius: 50%;
  background: conic-gradient(#2f6df6 0deg 270deg, rgba(255, 247, 230, 0.18) 270deg 360deg);
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 8px), #000 calc(100% - 8px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 8px), #000 calc(100% - 8px));
  animation: spin 1.1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
@media (prefers-reduced-motion: reduce) {
  .spinner {
    animation: none;
  }
}