html {
  -ms-touch-action: none;
}

body, canvas, div {
  display: block;
  outline: none;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);

  user-select: none;
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  -khtml-user-select: none;
}

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

body {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  margin: 0;

  cursor: default;
  color: #ffffff;
  background-color: #000000;
  text-align: center;
  font-family: Helvetica, Verdana, Arial, sans-serif;

  display: flex;
  flex-direction: column;
  overflow: hidden;
}

canvas {
  background-color: rgba(0, 0, 0, 0);
}

#GameDiv, #Cocos3dGameContainer, #GameCanvas {
  width: 100%;
  height: 100%;
}

.startup-brand {
  position: fixed;
  inset: 0;
  z-index: 2147483647;
  display: grid;
  place-items: center;
  background: #000000;
  opacity: 1;
  transition: opacity 180ms ease-out;
}

.startup-brand--hidden {
  pointer-events: none;
  opacity: 0;
}

.startup-brand__wordmark {
  color: #ffffff;
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: clamp(48px, 12vw, 80px);
  font-weight: 600;
  letter-spacing: 0.28em;
  line-height: 1;
  transform: translateX(0.14em);
}

:root {
  --safe-top: env(safe-area-inset-top);
  --safe-right: env(safe-area-inset-right);
  --safe-bottom: env(safe-area-inset-bottom);
  --safe-left: env(safe-area-inset-left);
}

@media (prefers-reduced-motion: reduce) {
  .startup-brand {
    transition: none;
  }
}