.topic-stage{isolation:isolate;position:relative}.topic-stage:before{z-index:-1;background-image:radial-gradient(var(--color-line-strong) 1px, transparent 1px);content:"";opacity:.6;background-size:14px 14px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(70% 80%,#000,#0000);mask-image:radial-gradient(70% 80%,#000,#0000)}