.back-to-top{position:fixed;right:22px;bottom:28px;width:56px;height:56px;border:1px solid rgba(255,255,255,.72);border-radius:18px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.54);color:#0b1725;box-shadow:0 18px 42px rgba(8,26,44,.18),inset 0 1px 0 rgba(255,255,255,.82);backdrop-filter:blur(20px) saturate(170%);-webkit-backdrop-filter:blur(20px) saturate(170%);cursor:pointer;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(14px) scale(.96);transition:opacity .28s ease,visibility .28s ease,transform .28s ease,background .28s ease,box-shadow .28s ease;z-index:120}.back-to-top svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.back-to-top.is-visible{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0) scale(1)}.back-to-top:hover{transform:translateY(-3px) scale(1.03);background:rgba(255,255,255,.78);box-shadow:0 24px 54px rgba(10,132,255,.22),inset 0 1px 0 rgba(255,255,255,.94)}.back-to-top:focus-visible{outline:3px solid rgba(10,132,255,.28);outline-offset:3px}@media(max-width:720px){.back-to-top{right:14px;bottom:92px;width:52px;height:52px;border-radius:16px}.back-to-top svg{width:22px;height:22px}}@media(min-width:721px){.mobile-dock+.back-to-top,.back-to-top{bottom:28px}}@media(prefers-reduced-motion:reduce){.back-to-top{transition:none}}