*{box-sizing:border-box}body{margin:0;background:#eff4fa;font:15px system-ui,"Microsoft Yahei",sans-serif;color:#24334a}main{max-width:800px;margin:30px auto;background:white;border:1px solid #dce4ee;border-radius:12px;overflow:hidden}header{background:#187ad4;color:white;padding:20px 26px;display:flex;align-items:center;justify-content:space-between}h1{font-size:21px;margin:0}section{padding:22px}label{display:grid;gap:10px}button{background:#187ad4;color:white;border:0;border-radius:5px;padding:10px 18px;cursor:pointer}button:disabled{opacity:.5;cursor:wait}input,textarea{width:100%;border:1px solid #c7d5e5;border-radius:5px;padding:12px;font:inherit;margin:8px 0;resize:vertical}.toolbar{display:flex;flex-wrap:wrap;gap:8px}.toolbar button{background:#edf5ff;color:#1766aa}ol{list-style:none;margin:18px 0;padding:0;height:360px;overflow:auto}li{padding:12px;margin:9px 0;border-radius:7px;background:#f0f4fa;white-space:pre-wrap;overflow-wrap:anywhere}li.visitor{background:#e1f1ff;margin-left:12%}li.system{background:transparent;color:#7c8999;text-align:center;font-size:12px}li small{display:block;margin-bottom:5px;color:#687d96}form{text-align:right}details{margin-top:20px;color:#687d96}#error{color:#b42b35;margin:0;padding:0 22px 18px}@media(max-width:600px){main{margin:0;border-radius:0;border:0}section{padding:14px}}

#typing{height:20px;color:#687d96;font-size:13px}.attachments{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:12px}.attachments input{width:auto;max-width:70%;padding:5px}.attachments small{width:100%;color:#687d96}.message-tools{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.message-tools img{max-width:100%;max-height:320px;object-fit:contain}.message-tools audio{max-width:100%}.card-form{margin-top:15px;padding-top:12px;border-top:1px solid #ccdae9;white-space:normal;text-align:left}.card-form select{width:100%;padding:10px;border:1px solid #c7d5e5;border-radius:5px;font:inherit}.card-form label{font-size:13px;gap:0}
