.shared-back-to-top{position:fixed;inset-inline-end:max(16px,env(safe-area-inset-right));bottom:calc(20px + env(safe-area-inset-bottom));z-index:30;display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;padding:0;border:0;border-radius:var(--radius, .5rem);background-color:var(--color-accent-btn, var(--teal-dark, #285e61));color:var(--color-on-accent-btn, #fff);cursor:pointer;box-shadow:0 4px 16px #103b3633;transition:background-color .12s ease}.shared-back-to-top[hidden]{display:none}.shared-back-to-top:hover{background-color:var(--color-accent-btn-strong, #1f4c4e)}.shared-back-to-top:focus-visible{outline:2px solid var(--focus, #319795);outline-offset:3px}.shared-back-to-top svg{flex:none;width:20px;height:20px}@media(prefers-reduced-motion:reduce){.shared-back-to-top{transition:none}}