.vb-totop{position:fixed;bottom:30px;right:30px;width:56px;height:56px;padding:0;border:none;border-radius:50%;background:#fff;color:#aa2135;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;box-shadow:0 12px 30px rgba(17,21,31,.18);z-index:999;opacity:0;visibility:hidden;transform:translateY(20px) scale(.85);transition:opacity .35s ease,transform .35s cubic-bezier(.34,1.56,.64,1),visibility .35s ease,background .3s ease,color .3s ease}.vb-totop.is-visible{opacity:1;visibility:visible;transform:translateY(0) scale(1)}.vb-totop__ring{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg)}.vb-totop__track{fill:none;stroke:rgba(170,33,53,.15);stroke-width:4}.vb-totop__bar{fill:none;stroke:#aa2135;stroke-width:4;stroke-linecap:round;transition:stroke-dashoffset .1s linear}.vb-totop__icon{position:relative;font-size:18px;transition:transform .3s ease}.vb-totop:hover{background:linear-gradient(135deg,#ff4856,#aa2135);color:#fff;box-shadow:0 16px 36px rgba(170,33,53,.4)}.vb-totop:hover .vb-totop__track{stroke:rgba(255,255,255,.3)}.vb-totop:hover .vb-totop__bar{stroke:#fff}.vb-totop:hover .vb-totop__icon{transform:translateY(-3px)}@media (max-width:767px){.vb-totop{bottom:20px;right:20px;width:48px;height:48px}.vb-totop__icon{font-size:16px}}