.lab-rail{overscroll-behavior-x:contain;cursor:grab;scrollbar-width:none;--lab-fade:120px;--lab-fade-floor:0;-webkit-mask-image:linear-gradient(to right, black calc(100% - var(--lab-fade)), rgba(0, 0, 0, var(--lab-fade-floor)));mask-image:linear-gradient(to right, black calc(100% - var(--lab-fade)), rgba(0, 0, 0, var(--lab-fade-floor)));-webkit-mask-image:linear-gradient(to right, black calc(100% - var(--lab-fade)), rgba(0, 0, 0, var(--lab-fade-floor)));overflow-x:auto}.lab-rail::-webkit-scrollbar{display:none}.lab-rail[data-dragging]{cursor:grabbing}.lab-rail[data-at-end]{-webkit-mask-image:none;mask-image:none}@media (max-width:639px){.lab-rail{--lab-fade:48px}}.lab-rail-chrome{position:relative}.lab-rail-progress{background:var(--color-border-subtle);border-radius:999px;height:2px;margin-top:14px;overflow:hidden}.lab-rail-progress-fill{border-radius:inherit;background:var(--color-primary-600);transform-origin:0;width:100%;height:100%;transform:scaleX(clamp(.06, var(--lab-progress,0), 1));transition:transform .12s linear;display:block}.lab-rail-hint{font-family:var(--font-mono,ui-monospace, monospace);font-size:var(--text-caption,.75rem);letter-spacing:.08em;text-transform:uppercase;color:var(--color-text-secondary);opacity:.9;align-items:center;gap:.4em;margin-top:12px;transition:opacity .4s;display:inline-flex}.lab-rail-chrome[data-moved] .lab-rail-hint{opacity:0}.lab-rail[data-bare]{-webkit-mask-image:none;mask-image:none}.lab-rail[data-snap]{scroll-snap-type:x proximity}.lab-rail[data-snap]>ul>li{scroll-snap-align:start}.lab-rail-controls{align-items:center;gap:20px;margin-top:18px;display:flex}.lab-rail-controls .lab-rail-progress{flex:1;margin-top:0}.lab-rail-nav{flex-shrink:0;gap:8px;display:none}@media (hover:hover) and (pointer:fine){.lab-rail-nav{display:flex}}.lab-rail-edge{pointer-events:none;justify-content:space-between;align-items:center;padding:0 8px;display:none;position:absolute;inset:0}@media (hover:hover) and (pointer:fine){.lab-rail-edge{display:flex}}.lab-rail-edge-btn{pointer-events:auto;transition:opacity .25s,transform .16s cubic-bezier(.32,.72,0,1),background-color .2s}.lab-rail-edge .lab-rail-edge-btn:disabled{opacity:0;pointer-events:none}.lab-rail-btn{width:40px;height:40px;color:var(--color-text-primary);background:var(--color-surface,#fff9);box-shadow:inset 0 0 0 1px var(--color-border-subtle);cursor:pointer;border-radius:999px;justify-content:center;align-items:center;transition:transform .16s cubic-bezier(.32,.72,0,1),opacity .2s,box-shadow .2s;display:inline-flex}.lab-rail-btn:hover{box-shadow:inset 0 0 0 1px var(--color-border-strong,var(--color-text-secondary))}.lab-rail-btn:active{transform:scale(.94)}.lab-rail-btn:focus-visible{outline:2px solid var(--color-focus-ring);outline-offset:2px}.lab-rail-btn:disabled{opacity:.32;cursor:default;pointer-events:none}@media (prefers-reduced-motion:reduce){.lab-rail-progress-fill,.lab-rail-hint,.lab-rail-btn{transition:none}}.lab-rail-inset{padding-inline:max(var(--layout-padding), calc((100% - var(--layout-work-max)) / 2))}