.aicbt-back-to-top{--aicbt-size:54px;position:fixed;z-index:9970;width:var(--aicbt-size);height:var(--aicbt-size);padding:0;border:1px solid rgba(126,231,255,.34);border-radius:18px;background:linear-gradient(145deg,rgba(31,37,65,.98),rgba(11,18,32,.98));color:#fff;display:grid;place-items:center;cursor:pointer;box-shadow:0 16px 42px rgba(0,0,0,.34),0 0 24px rgba(124,92,255,.18);backdrop-filter:blur(14px);transition:opacity .22s ease,transform .22s ease,bottom .28s ease,box-shadow .22s ease;border-color .22s ease;isolation:isolate}
.aicbt-back-to-top[hidden]{display:none!important}.aicbt-back-to-top:before{content:"";position:absolute;inset:7px;border-radius:13px;background:linear-gradient(135deg,rgba(124,92,255,.18),rgba(34,211,238,.14));z-index:-1}.aicbt-back-to-top:hover{transform:translateY(-3px);border-color:rgba(126,231,255,.75);box-shadow:0 18px 48px rgba(0,0,0,.38),0 0 30px rgba(34,211,238,.2)}.aicbt-back-to-top:focus-visible{outline:2px solid #67e8f9;outline-offset:4px}.aicbt-back-to-top svg{width:25px;height:25px;fill:currentColor;filter:drop-shadow(0 0 7px rgba(103,232,249,.38))}.aicbt-back-to-top__ring{position:absolute;inset:-5px;border:1px solid rgba(124,92,255,.24);border-radius:22px;pointer-events:none}
@media(max-width:680px){.aicbt-back-to-top{--aicbt-size:48px;border-radius:16px}.aicbt-back-to-top:before{border-radius:11px}.aicbt-back-to-top__ring{border-radius:19px}.aicbt-back-to-top svg{width:22px;height:22px}}
@media(prefers-reduced-motion:reduce){.aicbt-back-to-top{transition:none}}