*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #111715;
  font-family: system-ui, sans-serif;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

#hint {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  max-width: min(560px, calc(100vw - 32px));
  padding: 10px 14px;
  border: 1px solid rgba(160, 190, 170, 0.16);
  border-radius: 999px;
  background: rgba(8, 14, 11, 0.62);
  color: rgba(190, 220, 198, 0.82);
  font-size: 12px;
  line-height: 1.35;
  text-align: center;
  pointer-events: none;
  user-select: none;
  transition: opacity 2.4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

#sync-debug {
  position: fixed;
  top: 12px;
  right: 12px;
  color: rgba(160, 190, 170, 0.25);
  font-size: 10px;
  font-family: monospace;
  pointer-events: none;
  user-select: none;
}