:root{--_backtotop-inline-offset:var(--backtotop-inline-offset,20px);--_backtotop-block-offset:var(--backtotop-block-offset,20px);--_backtotop-border:var(--backtotop-border,0 solid transparent);--_backtotop-radius:var(--backtotop-radius,5px);--_backtotop-bg:var(--backtotop-bg,rgba(0,0,0,0.5));--_backtotop-hover-bg:var(--backtotop-hover-bg,var(--_backtotop-bg));--_backtotop-color:var(--backtotop-color,#fff);--_backtotop-padding:var(--backtotop-padding,15px);--_backtotop-transition:var(--backtotop-transition,opacity 200ms ease,visibility 200ms 0ms);--_backtotop-hidden-opacity:var(--backtotop-hidden-opacity,0);--_backtotop-visible-opacity:var(--backtotop-visible-opacity,1);--_backtotop-hover-opacity:var(--backtotop-hover-opacity,0.8);--_backtotop-focus-opacity:var(--backtotop-focus-opacity,0.6);--_backtotop-min-size:var(--backtotop-min-size,46px);--_backtotop-icon-size:var(--backtotop-icon-size,12px);--_backtotop-icon-stroke:var(--backtotop-icon-stroke,3px);}#backtotop{position:fixed;right:var(--_backtotop-inline-offset);bottom:var(--_backtotop-block-offset);border:var(--_backtotop-border);border-radius:var(--_backtotop-radius);cursor:pointer;z-index:100;transition:var(--_backtotop-transition);background:var(--_backtotop-bg);color:var(--_backtotop-color);padding:var(--_backtotop-padding);line-height:1;display:flex;align-items:center;justify-content:center;opacity:var(--_backtotop-hidden-opacity);visibility:hidden;pointer-events:none;&:hover{opacity:var(--_backtotop-hover-opacity);background:var(--_backtotop-hover-bg);}&:focus{opacity:var(--_backtotop-focus-opacity);outline:none;}&.is-visible{opacity:var(--_backtotop-visible-opacity);visibility:visible;pointer-events:auto;}&.backtotop--icon{min-width:var(--_backtotop-min-size);min-height:var(--_backtotop-min-size);&::after{content:'';display:block;width:var(--_backtotop-icon-size);height:var(--_backtotop-icon-size);border-left:var(--_backtotop-icon-stroke) solid var(--_backtotop-color);border-bottom:var(--_backtotop-icon-stroke) solid var(--_backtotop-color);transform:rotate(135deg);position:relative;top:4px;}& .backtotop__label{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);clip-path:inset(50%);white-space:nowrap;border:0;}}&.backtotop--text{--backtotop-bg:#f7f7f7;--backtotop-border:1px solid #cccccc;--backtotop-color:#333333;--backtotop-hover-bg:#eeeeee;--backtotop-inline-offset:10px;--backtotop-block-offset:10px;--backtotop-padding:5px 10px;min-width:0;min-height:0;display:inline-block;&:focus{opacity:var(--_backtotop-focus-opacity);}& .backtotop__label{position:static;width:auto;height:auto;padding:0;margin:0;clip:auto;clip-path:none;white-space:normal;font-size:14px;line-height:30px;}}}@media print{#backtotop{visibility:hidden;}}