.scroll-top-btn{z-index:40;border:1px solid var(--line,#e8eaf4);background:var(--surface,#fff);width:44px;height:44px;color:var(--indigo,#25246f);opacity:0;pointer-events:none;border-radius:50%;place-items:center;transition:opacity .2s,transform .2s,border-color .15s,color .15s;display:grid;position:fixed;bottom:22px;left:20px;transform:translateY(10px)scale(.92);box-shadow:0 10px 26px #15204d24}.scroll-top-btn.visible{opacity:1;pointer-events:auto;transform:translateY(0)scale(1)}.scroll-top-btn:hover{border-color:var(--aqua,#18bcc6);color:var(--aqua-dark,#03737c)}@media (max-width:600px){.scroll-top-btn{width:40px;height:40px;bottom:16px;left:14px}}@media (prefers-reduced-motion:reduce){.scroll-top-btn{transition:opacity .1s linear}}