:root {
  color-scheme: dark;
  background: #17201f;
  font-family:
    "PingFang SC",
    "Microsoft YaHei",
    "Noto Sans CJK SC",
    system-ui,
    sans-serif;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body,
#app-shell {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #17201f;
}

body {
  touch-action: none;
  overscroll-behavior: none;
}

#app-shell {
  display: grid;
  place-items: center;
}

#game-canvas {
  width: 100vw;
  height: 100dvh;
  display: block;
  background: #17201f;
}