.sg-back-top{position:fixed;z-index:700;right:clamp(16px,3.2vw,48px);bottom:calc(20px + env(safe-area-inset-bottom,0px));display:block;width:56px;height:56px;padding:0;border:0;border-radius:50%;background:#087f9e;box-shadow:0 6px 18px rgba(0,48,62,.3);text-decoration:none;cursor:pointer;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(14px)scale(.94);transition:opacity .28s ease,transform .28s ease,visibility .28s}.sg-back-top.is-visible{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)scale(1)}.sg-back-top:hover{transform:translateY(-2px)scale(1.04);box-shadow:0 9px 22px rgba(0,48,62,.35)}.sg-back-top:focus-visible{outline:3px solid #8dc63f;outline-offset:3px}.sg-back-top .sg-six-overlay{display:block;position:static;width:100%;height:100%;margin:0;padding:0;background:0 0;transform:none;opacity:1;pointer-events:none}.sg-back-top .sg-six-overlay svg{display:block;width:100%;height:100%}.sg-back-top .sg-six-arc{animation:none!important}@media(max-width:620px){.sg-back-top{right:14px;bottom:calc(14px + env(safe-area-inset-bottom,0px));width:48px;height:48px}}@media(prefers-reduced-motion:reduce){.sg-back-top{transition:none}.sg-back-top:hover{transform:none}}