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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ffffff;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

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

.stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(47, 109, 246, 0.35) 1px, transparent 1px), linear-gradient(to bottom, rgba(47, 109, 246, 0.35) 1px, transparent 1px);
  background-size: 32px 32px, 32px 32px;
  animation: gridmove 2s linear infinite;
}

.hint {
  position: relative;
  margin: 0;
  padding: 10px 20px;
  border-radius: 999px;
  background: rgba(23, 20, 26, 0.08);
  color: #17141a;
  font: 700 clamp(14px, 4vw, 18px)/1.3 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

@keyframes gridmove {
  from {
    background-position: 0 0, 0 0;
  }
  to {
    background-position: 32px 32px, 32px 32px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .stage::before {
    animation: none;
  }
}