* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  height: 100%;
  background: radial-gradient(120% 100% at 50% 0%, #101736 0%, #090d1e 55%, #05070f 100%);
  overflow: hidden;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Segoe UI", system-ui, sans-serif;
}

.stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

#game {
  height: min(92vh, 740px);
  width: auto;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  border-radius: 10px;
  box-shadow:
    0 0 0 2px rgba(120, 160, 255, 0.18),
    0 0 42px rgba(64, 110, 255, 0.22),
    0 24px 60px rgba(0, 0, 0, 0.65);
  background: #0b1020;
}

.hint {
  color: #5f6c9b;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  user-select: none;
}