:root{font-family:system-ui,sans-serif;color:#183b42;background:#f4f8f8;font-size:15px}*{box-sizing:border-box}body{margin:0}header{background:#fff;border-bottom:1px solid #d4e2e2;padding:20px 4%;display:flex;align-items:center;gap:24px}header strong{font-size:23px}header span{display:block;color:#5b747a;font-size:13px}#identity{margin-left:auto}.banner{margin:0;background:#e2f3ec;color:#215d49;padding:12px 4%;font-weight:600}main{padding:20px 4%}#notice{padding:0 4%;min-height:22px;color:#a43c24}button{background:#12695b;color:white;border:0;border-radius:7px;padding:10px 14px;cursor:pointer;font-weight:600}button:disabled{background:#bccbcb;color:#496065;cursor:not-allowed}input,textarea{width:100%;border:1px solid #a9c0c2;border-radius:7px;padding:12px;font:inherit;background:#fff}label{display:block;margin-bottom:16px}input{margin-top:6px}#login{max-width:420px;margin:40px auto;background:#fff;border-radius:12px;padding:30px;box-shadow:0 4px 25px #1233}#desk{display:grid;grid-template-columns:300px 1fr;gap:20px}#desk[hidden],#login[hidden],button[hidden]{display:none}aside,article{background:white;border:1px solid #dce7e7;border-radius:12px;padding:18px;min-width:0}.section-title{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}h1{font-size:21px;margin:8px 0}h2{font-size:18px}.muted{color:#5b747a;font-size:13px}.hint{background:#fff6df;border-radius:8px;padding:12px;color:#6b5321;font-size:13px}#chats button{display:block;background:#f1f6f6;color:#294e53;width:100%;text-align:left;margin:8px 0;padding:14px;border:1px solid transparent}#chats button.selected{border-color:#128776;background:#dcf1e8}#chats small{display:block;margin-top:5px;font-weight:400}#messages{height:420px;overflow:auto;padding:8px 0}.message{max-width:85%;padding:12px 14px;border-radius:10px;margin:10px 0;background:#eff4f5;white-space:pre-wrap;overflow-wrap:anywhere}.message.out{margin-left:auto;background:#dff3e9}.message small{display:block;color:#537271;font-size:11px;margin-top:8px}.message button{font-size:12px;margin-top:10px;background:#935d12}footer{padding:16px 4%;font-size:12px;color:#5b747a}textarea:focus,input:focus,button:focus-visible{outline:3px solid #71bdad;outline-offset:2px}@media(max-width:850px){#desk{grid-template-columns:1fr}#chats{max-height:220px;overflow:auto}header{flex-wrap:wrap}#identity{margin-left:0}#messages{height:340px}.message{max-width:96%}}

input[type=checkbox]{width:auto;margin-right:8px}details{padding:12px 0;font-size:13px}summary{cursor:pointer;margin-bottom:12px}