* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: #10131a;
  color: #e6e9ef;
  font-family: -apple-system, "Segoe UI", Roboto, "Microsoft YaHei", sans-serif;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 20px 16px 40px; }
header { text-align: center; margin-bottom: 16px; }
h1 { margin: 0; font-size: 30px; letter-spacing: 4px; color: #f7d64a; text-shadow: 0 2px 0 #7a5c00; }
.sub { margin: 6px 0 0; color: #9aa3b2; font-size: 13px; }
.game { display: flex; gap: 18px; align-items: flex-start; justify-content: center; flex-wrap: wrap; }
.stage { position: relative; width: 416px; height: 416px; }
canvas {
  background: #000; display: block;
  border: 3px solid #3a4152; border-radius: 4px;
  image-rendering: pixelated;
}
.overlay {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(6, 8, 12, 0.82);
  border-radius: 4px;
}
.overlay.hidden { display: none; }
.panel { text-align: center; padding: 24px; }
.panel h2 { margin: 0 0 10px; font-size: 26px; color: #f7d64a; }
.panel p { margin: 0; color: #cdd3df; font-size: 15px; }
.panel b { color: #7ee787; }
.hud {
  width: 200px; min-width: 180px;
  background: #171b24; border: 1px solid #2a3040; border-radius: 8px; padding: 14px;
}
.stat {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 0; border-bottom: 1px dashed #2a3040;
}
.stat span { color: #8b93a4; font-size: 12px; letter-spacing: 1px; }
.stat b { font-size: 18px; color: #e6e9ef; }
.keys { margin-top: 14px; color: #9aa3b2; font-size: 12px; }
.keys p { margin: 6px 0; }
kbd {
  display: inline-block; padding: 1px 6px; margin: 0 1px;
  background: #262c3a; border: 1px solid #39415a; border-bottom-width: 2px;
  border-radius: 4px; font-size: 12px; color: #e6e9ef;
}
footer { text-align: center; margin-top: 20px; color: #6b7385; font-size: 12px; }