#nine-back-to-top{position:fixed;right:max(22px,env(safe-area-inset-right));bottom:calc(24px + env(safe-area-inset-bottom));z-index:1000;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:58px;height:68px;padding:8px 4px;border:1px solid #d9d9d9;border-radius:3px;background:#fff;color:#252525;box-shadow:0 2px 10px #00000012;font:500 10px/1.4 'Yu Gothic','Hiragino Kaku Gothic ProN',Meiryo,sans-serif;letter-spacing:.04em;cursor:pointer;appearance:none;opacity:1;transition:background-color .15s,border-color .15s}
#nine-back-to-top svg{display:block;flex:none;color:#0041ff}
#nine-back-to-top:hover{background:#f5f7ff;border-color:#0041ff}
#nine-back-to-top:focus-visible{outline:3px solid #0041ff;outline-offset:3px}
@media(max-width:760px){#nine-back-to-top{right:max(12px,env(safe-area-inset-right));bottom:calc(14px + env(safe-area-inset-bottom));width:48px;height:58px;gap:3px;font-size:9px}}
@media(prefers-reduced-motion:reduce){#nine-back-to-top{transition:none}}
@media print{#nine-back-to-top{display:none}}