/* One shared vertical rail for the existing top button and Bitrix chat. */
html.s100-floating-ready #btn-scroll-to-top{
 display:flex!important;align-items:center;justify-content:center;
 position:fixed!important;top:auto!important;left:auto!important;
 right:calc(var(--s100-floating-right,24px) + var(--s100-floating-center-offset,11px))!important;
 bottom:calc(var(--s100-floating-bottom,24px) + var(--s100-floating-chat-size,66px) + var(--s100-floating-top-offset,12px))!important;
 width:44px!important;height:44px!important;min-width:44px;
 padding:0;border-radius:50%;box-sizing:border-box;
}
html.s100-floating-ready #btn-scroll-to-top .icon{width:18px;height:18px}
html.s100-floating-ready #btn-scroll-to-top.s100-top-visible{z-index:10050!important;opacity:1!important;pointer-events:auto}
html.s100-floating-ready #btn-scroll-to-top:not(.s100-top-visible),
html.s100-floating-ready.s100-floating-chat-open #btn-scroll-to-top,
html.s100-floating-ready.s100-floating-tight #btn-scroll-to-top{opacity:0!important;pointer-events:none!important;z-index:-100!important}
@media(prefers-reduced-motion:reduce){html.s100-floating-ready #btn-scroll-to-top{transition:none}}