.bounce-board{display:block;width:min(100%,480px);aspect-ratio:500/340;margin:auto;background:#eef3fa;border:1px solid #dce5f1;border-radius:12px;touch-action:none;cursor:crosshair}
.bounce-aim{display:flex;align-items:center;gap:10px;width:min(100%,440px);margin:16px auto 4px}
.bounce-aim label{flex-shrink:0;display:flex;gap:6px;align-items:center;font-size:12px;font-weight:800;color:#667c97}
.bounce-aim output{font-variant-numeric:tabular-nums;color:#33485f;min-width:38px}.bounce-aim input{flex:1;min-width:0;accent-color:#446fd1;cursor:pointer}