.rail-wrap{
  position:relative;z-index:10;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  display:grid;grid-template-columns:auto 1fr auto;
  grid-template-rows:22px 44px;
  align-items:center;row-gap:2rem;
  padding:10px 14px 24px;
}
.rail-wrap > .arrow,.rail-wrap > .rail{grid-row:2}
.arrow{width:34px;height:34px;display:grid;place-items:center;color:var(--dim);font-size:17px}
.arrow:hover{color:var(--fg)}
.rail{position:relative;height:44px;overflow-x:auto;overflow-y:hidden;scrollbar-width:none;scroll-behavior:smooth}
.rail::-webkit-scrollbar{display:none}
.track{position:absolute;top:0;left:0;height:100%;display:flex;align-items:baseline;padding:0 6px;width:max-content;contain-intrinsic-size:auto 0px auto 44px}
.track.asleep{content-visibility:hidden}
.rail-gap{flex:none;align-self:flex-start;height:0}
.track::before{content:"";flex:none;height:30px}

.chip{
  white-space:nowrap;
  font-size:19px;
  line-height:24px;
  font-synthesis:none;
  color:var(--fg);
  padding:4px 12px 4px 0;
  contain:layout style paint;
  padding-block:14px;margin-block:-10px;
}
.chip[data-last]{padding-right:0}
.chip[data-sep]::before{content:"/";content:"/" / "";margin-right:12px;font:15px var(--ui);color:var(--faint);user-select:none}
.chip-name{opacity:.34;transition:opacity .12s linear}
:where(.track:not(.hover-lock)) .chip:hover .chip-name{opacity:.8}
.chip.active .chip-name{opacity:1}
.chip.uncovered .chip-name{opacity:.13}
:where(.track:not(.hover-lock)) .chip.uncovered:hover .chip-name{opacity:.5}
.chip.added .chip-name::after{content:"·";margin-left:5px;color:var(--dim)}

.rail-pin{position:absolute;grid-row:2 / 3;grid-column:2 / 3;inset:0;display:flex;align-items:baseline;padding:0 6px;overflow:hidden;pointer-events:none}
.rail-pin::before{content:"";flex:none;height:30px}
.rail-pin.right{justify-content:flex-end}
.rail-pin .chip{flex:none;contain:layout style paint;padding-right:0;pointer-events:auto}
.rail-pin.right .chip{padding-left:12px}
.chip[data-sep-end]::after{content:"/";content:"/" / "";margin:0 12px;font:15px var(--ui);color:var(--faint);user-select:none}

.empty{font-size:13px;color:var(--dim);padding:8px 6px}

@media (max-width:720px){
  .rail-wrap > .arrow{display:none}
  .rail-wrap > .rail,.rail-pin{grid-column:1 / -1}
}