* {
  box-sizing: border-box;
}

:root {
  color-scheme: dark;
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  background: #081b2c;
}

html,
body {
  width: 100%;
  min-width: 0;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #081b2c;
}

body {
  display: grid;
  place-items: center;
}

#game-shell {
  position: relative;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: #081b2c;
}

#game-canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-aspect-ratio: 4 / 5) {
  #game-shell {
    height: 100dvh;
  }
}