* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: #ffffff;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

.stage { width: 100%; }

.canvas {
  position: relative;
  width: 100vw;
  margin: 0;
  background: #fff;
}

.canvas img {
  width: 100%;
  height: auto;
  display: block;
}

.hit {
  position: absolute;
  display: block;
  border-radius: 999px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  outline: none;
}

.hit:focus-visible {
  box-shadow: 0 0 0 4px rgba(255,255,255,.75), 0 0 0 8px rgba(255,0,128,.35);
}

body.show-hits .hit {
  outline: 3px dashed rgba(255, 0, 140, .85);
  outline-offset: -2px;
  background: rgba(255, 0, 140, .08);
}

.sr {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.tip {
  width: 100vw;
  margin: 10px 0 20px;
  padding: 0 12px;
  color: rgba(20,35,61,.78);
  font-weight: 600;
  font-size: 13px;
  line-height: 1.35;
}