html, body { margin: 0; padding: 0; width: 100%; height: 100%; background: #0b1220; overflow: hidden; font-family: "Trebuchet MS", Arial, sans-serif; }
#scene { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }

#overlay {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(8, 16, 28, 0.5);
  z-index: 2;
  color: #f6f7fb;
  text-align: center;
  backdrop-filter: blur(1px);
}

#startCard {
  background: rgba(11, 18, 31, 0.78);
  padding: 20px 24px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  line-height: 1.5;
}

#startCard div:first-child {
  font-size: 22px;
  margin-bottom: 8px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

#hint {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 3;
  color: #f0f5ff;
  background: rgba(10, 22, 40, 0.6);
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  pointer-events: none;
  font-size: 13px;
}