.mb-widget{width:320px;border:1px solid #ddd;border-radius:14px;overflow:hidden;font-family:system-ui,Arial}
.mb-header{padding:10px 12px;border-bottom:1px solid #eee;display:flex;justify-content:space-between;align-items:center}
.mb-title{font-weight:700}
.mb-powered{font-size:11px;opacity:.75}
.mb-body{height:260px;overflow:auto;padding:10px;background:#fafafa}
.mb-msg{padding:8px 10px;border-radius:12px;margin:6px 0;max-width:90%}
.mb-user{margin-left:auto;background:#e9f0ff}
.mb-bot{margin-right:auto;background:#fff;border:1px solid #eee}
.mb-footer{padding:10px;border-top:1px solid #eee;display:flex;gap:8px;align-items:center}
#mb-input{flex:1;padding:8px;border-radius:10px;border:1px solid #ddd}
#mb-send{padding:8px 10px;border-radius:10px;border:1px solid #111;background:#111;color:#fff;cursor:pointer}
.mb-blocked{font-size:13px;opacity:.85}