html, body {
  margin: 0;
  min-height: 100%;
  background: #061735;
  color: #e9f7ff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
#app { display: grid; place-items: center; gap: 16px; padding: 20px; }
#game {
  width: min(100vw - 40px, 1600px);
  aspect-ratio: 16 / 9;
  height: auto;
  border: 4px solid #7fe8ff;
  background: #0a0a14;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  box-shadow: 0 20px 80px rgba(0,0,0,.45);
}
#notes { width: min(100vw - 40px, 1600px); opacity: .92; }
code { color: #7fe8ff; }