.viewer-cover{position:fixed;z-index:2200;object-fit:cover;display:block;pointer-events:none;max-width:none!important;view-transition-name:none!important;background:#222}
html:is(.seamless-opening,.seamless-closing) .site-header .brand{z-index:2300!important}
html:is(.seamless-opening,.seamless-closing) #site-navigation{pointer-events:none!important}
.viewer-notice{position:fixed;z-index:2400;bottom:26px;left:50%;transform:translateX(-50%);width:max-content;max-width:calc(100% - 36px);padding:12px 20px;border-radius:24px;background:#111;color:#fff;font:300 13px/1.5 var(--font-support)}
.viewer-notice button{color:inherit;border:0;background:transparent;text-decoration:underline;padding:4px;font:inherit;cursor:pointer}