.echo-collapsible{border-block:var(--echo-border-hairline,1px) solid var(--echo-seam)}.echo-collapsible__trigger{display:flex;align-items:center;justify-content:space-between;gap:var(--echo-space-6);width:100%;min-height:var(--echo-control-default);padding:var(--echo-space-6) var(--echo-space-3);border:0;border-radius:var(--echo-radius-md);cursor:pointer;text-align:start;color:var(--echo-text);background:transparent;font-family:var(--echo-font-machine,ui-sans-serif,system-ui,sans-serif);font-size:var(--echo-text-md);font-weight:var(--echo-weight-semibold,600);transition:background var(--echo-duration-tick) ease}@media (hover:hover){.echo-collapsible__trigger:hover{background:color-mix(in oklab,var(--echo-cap) 28%,transparent)}}.echo-collapsible__trigger:focus-visible{outline:2px solid transparent;outline-offset:-2px;box-shadow:var(--echo-shadow-ring-inset,inset 0 0 0 2px var(--echo-accent-ink,var(--echo-accent-glow)))}.echo-collapsible__trigger[data-disabled]{cursor:default;opacity:.45}.echo-collapsible__chevron{flex:none;color:var(--echo-text-dim);transition:transform var(--echo-duration-pop) var(--echo-ease-pop),color var(--echo-duration-tick) ease}@media (hover:hover){.echo-collapsible__trigger:not([data-disabled]):hover .echo-collapsible__chevron{transform:translateY(2px);color:var(--echo-text)}}.echo-collapsible__trigger[data-panel-open] .echo-collapsible__chevron{transform:rotate(180deg);color:var(--echo-text)}@media (hover:hover){.echo-collapsible__trigger[data-panel-open]:not([data-disabled]):hover .echo-collapsible__chevron{transform:rotate(180deg) translateY(2px)}}.echo-collapsible__panel{overflow:hidden;height:var(--collapsible-panel-height);color:var(--echo-text-dim);font-size:var(--echo-text-md);line-height:var(--echo-leading-body,1.55);transition:height var(--echo-duration-pop) cubic-bezier(.32,.72,0,1)}.echo-collapsible__panel[data-ending-style],.echo-collapsible__panel[data-starting-style]{height:0}.echo-collapsible__panel[data-ending-style]{transition-duration:var(--echo-duration-sweep)}.echo-collapsible__inner{padding:0 var(--echo-space-3) var(--echo-space-8);max-width:62ch;transition:opacity var(--echo-duration-sweep) ease var(--echo-duration-tick),transform var(--echo-duration-pop) var(--echo-ease-pop) var(--echo-duration-tick)}.echo-collapsible__panel[data-ending-style] .echo-collapsible__inner,.echo-collapsible__panel[data-starting-style] .echo-collapsible__inner{opacity:0;transform:translateY(-6px)}.echo-collapsible__panel[data-ending-style] .echo-collapsible__inner{transition-duration:var(--echo-duration-tick);transition-delay:0s}@media (prefers-reduced-motion:reduce){.echo-collapsible__chevron,.echo-collapsible__inner,.echo-collapsible__panel{transition:none}}@media (forced-colors:active){.echo-collapsible{border-color:CanvasText}}