.back-to-top{--back-to-top-size:48px;right:var(--space-md);bottom:var(--space-lg);z-index:5;width:var(--back-to-top-size);height:var(--back-to-top-size);background:var(--gnm-color-surface-highlight);border:var(--rule-hair) solid var(--gnm-color-border-strong);border-radius:var(--radius-control);box-shadow:var(--shadow-whisper);color:var(--gnm-color-text-brand-muted);font-family:inherit;font-size:var(--text-2xs);font-weight:600;line-height:var(--line-height-oneline);cursor:pointer;flex-direction:column;justify-content:center;align-items:center;display:flex;position:fixed}.back-to-top__arrow{width:var(--space-sm);height:var(--space-sm);background-color:currentColor;transform:rotate(-90deg);-webkit-mask:url(/top/icon-chevron-nav.svg) 50%/auto 10px no-repeat;mask:url(/top/icon-chevron-nav.svg) 50%/auto 10px no-repeat}