.ushigome-back-to-top{position:fixed;right:calc(16px + env(safe-area-inset-right,0px));bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:900;display:inline-flex;flex-direction:column;gap:2px;align-items:center;justify-content:center;box-sizing:border-box;width:60px;height:60px;min-width:60px;min-height:60px;max-width:calc(100vw - 32px - env(safe-area-inset-left,0px) - env(safe-area-inset-right,0px));padding:0;border:2px solid #ffffff80;border-radius:50%;background:#0052a1;color:#fff;font:inherit;font-size:14px;font-weight:800;line-height:1;white-space:nowrap;box-shadow:0 4px 14px #06468f30;cursor:pointer;transition:background-color .18s,box-shadow .18s}
.ushigome-back-to-top[hidden]{display:none!important}
@media(hover:hover){.ushigome-back-to-top:hover{background:#007bc1;box-shadow:0 6px 18px #06468f45}}
.ushigome-back-to-top:focus-visible{outline:3px solid #ffda55;outline-offset:4px;box-shadow:0 0 0 3px #06468f}
@media(prefers-reduced-motion:reduce){.ushigome-back-to-top{transition:none;animation:none}}
.ushigome-back-to-top__arrow{font-size:22px;line-height:1}
.ushigome-back-to-top__label{font-size:12px;line-height:1}
@media(max-width:600px){.ushigome-back-to-top{width:56px;height:56px;min-width:56px;min-height:56px}}