/* ------- drillStability ------- */
.ds-track{height:44px}
.ds-needle{position:absolute;top:-4px;bottom:-4px;width:3px;background:var(--text);
  will-change:left;transition:background 90ms var(--ease)}
.ds-needle.good{background:var(--accent)}
.ds-centre{position:absolute;left:50%;top:6px;bottom:6px;width:1px;margin-left:-1px;background:var(--line-hard)}
.ds-meter{height:8px}
.ds-meter.near .bar-fill{background:var(--good)}