:root { color-scheme: dark; }
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 18px 12px 42px;
  overflow: hidden;
  background: #2b2118;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
}
#wrap { position: relative; width: min(715px, calc(100vw - 24px)); }
canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 40px rgb(0 0 0 / 60%);
  cursor: default;
  touch-action: none;
}
#tip {
  position: absolute;
  left: 0;
  right: 0;
  margin: 9px 0 0;
  color: #c9a86a;
  font-size: 13px;
  text-align: center;
  user-select: none;
}
#boot-error {
  position: absolute;
  inset: 12px 12px auto;
  padding: 12px 16px;
  border-radius: 8px;
  background: rgb(120 20 10 / 94%);
  color: #ffe9d2;
  font-size: 14px;
  line-height: 1.6;
}
@media (max-width: 600px) {
  #tip { font-size: 11px; }
}