:root{
  --duration-series-color:#2196F3;
}

.b-hide-tasks .b-gantt-task-wrap, .b-hide-tasks .b-sch-dependency{
  display:none;
}

.b-series-icon{
  width:1em;
  height:1em;
  border-radius:50%;
  margin-inline-end:0.5em;
  background-color:#CC0033;
}

.b-timeline-overlay-chart circle[data-name=duration]{
  fill:var(--duration-series-color);
}
.b-timeline-overlay-chart path[data-name=duration]{
  stroke:var(--duration-series-color);
}

li[data-id=duration] .b-series-icon{
  background-color:var(--duration-series-color);
}