.solution-return[hidden]{display:none}
.solution-return{position:fixed;z-index:40;left:24px;top:var(--solution-return-top,112px);display:inline-flex;align-items:center;max-width:calc(100vw - 48px);padding:12px 18px;border:1px solid #cbd8de;border-radius:30px;background:#fffffff2;color:var(--ink);box-shadow:0 4px 20px #10232d20;font-size:14px;font-weight:550;line-height:1.3;text-decoration:none;backdrop-filter:blur(8px)}
.solution-return:hover{background:var(--ink);color:#fff}
@media(max-width:600px){.solution-return{left:12px;padding:10px 14px;font-size:13px}}

body:has(.solution-return:not([hidden])) #main{padding-top:48px}