*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{width:100%;height:100%;overflow:hidden;background:#07060E}
body{
  display:flex;align-items:center;justify-content:center;
  font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:
    radial-gradient(900px 620px at 20% -8%, rgba(124,92,255,.28), transparent 62%),
    radial-gradient(760px 520px at 88% 12%, rgba(34,211,238,.16), transparent 62%),
    radial-gradient(700px 700px at 50% 108%, rgba(255,92,138,.14), transparent 60%),
    #07060E;
  touch-action:none;user-select:none;-webkit-user-select:none;
}
#stage{position:relative;line-height:0}
canvas{
  display:block;
  background:#0E0D1A;
  border-radius:0;
  box-shadow:0 30px 90px rgba(0,0,0,.7), 0 0 0 1px rgba(255,255,255,.07);
  image-rendering:auto;
}
@media (min-width:560px) and (min-height:700px){
  canvas{border-radius:18px}
}
#hint{
  display:none;position:fixed;inset:0;z-index:50;
  align-items:center;justify-content:center;text-align:center;
  background:rgba(7,6,14,.96);color:#EAE8F6;font-size:16px;letter-spacing:1px;
  line-height:2;padding:30px;
}
@media (orientation:landscape) and (max-height:560px){
  #hint{display:flex}
}