header.top .brand:after{content:"+ 二世代";display:inline-block;margin-left:.4em;padding:.12em .5em;border-radius:999px;font-size:.62em;font-weight:700;line-height:1.4;vertical-align:.35em;color:#fff;background:linear-gradient(100deg,#4fdcff,#8b6bff 55%,#ff5c9a);white-space:nowrap}body:has(#messageList) header.top .brand:after,body:has(#roomList) header.top .brand:after{content:none}