#back-to-top{position:fixed;right:30px;bottom:30px;width:55px;height:55px;padding:0;margin:0;display:flex;align-items:center;justify-content:center;background-color:#336666;color:#ffffff;border:2px solid rgba(255,255,255,0.25);border-radius:50%;box-shadow:0 8px 25px rgba(51,102,102,0.35);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(15px) scale(0.9);transition:opacity 0.3s ease,visibility 0.3s ease,transform 0.3s ease,background-color 0.3s ease,box-shadow 0.3s ease;z-index:999999}#back-to-top svg{width:27px;height:27px;fill:none;stroke:currentColor;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round;display:block}#back-to-top.show{opacity:1;visibility:visible;transform:translateY(0) scale(1)}#back-to-top:hover{background-color:#294f4f;transform:translateY(-4px) scale(1.05);box-shadow:0 12px 30px rgba(51,102,102,0.5)}#back-to-top:active{transform:translateY(-1px) scale(0.96)}#back-to-top:focus-visible{outline:3px solid rgba(51,102,102,0.35);outline-offset:4px}@media (max-width:767px){#back-to-top{right:18px;bottom:18px;width:48px;height:48px}#back-to-top svg{width:24px;height:24px}}