/* Shared portal and forum scroll control. */
#gm-back-to-top{position:fixed;right:calc(18px + env(safe-area-inset-right,0px));bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:900;display:flex;align-items:center;justify-content:center;width:46px;height:46px;margin:0;padding:0;border:1px solid rgba(255,255,255,.25);border-radius:14px;background:#343b43;color:#fff;box-shadow:0 5px 18px rgba(0,0,0,.22);cursor:pointer;transition:background .18s,transform .18s}
#gm-back-to-top[hidden]{display:none!important}
#gm-back-to-top:hover{background:#b65322;transform:translateY(-2px)}
#gm-back-to-top:focus-visible{outline:3px solid #d97732;outline-offset:3px}
#gm-back-to-top svg{width:22px;height:22px;pointer-events:none}
@media(prefers-reduced-motion:reduce){#gm-back-to-top{transition:none}}
@media print{#gm-back-to-top{display:none!important}}