.kb-widget{font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Arial,sans-serif;max-width:560px;border:1px solid #e2e8f0;border-radius:16px;box-shadow:0 6px 22px rgba(0,0,0,.06);overflow:hidden}
.kb-head{background:#0B5CAB;color:#fff;font-weight:700;padding:10px 14px}
.kb-body{background:#f8fafc;max-height:380px;overflow:auto;padding:14px}
.kb-msg{white-space:pre-wrap;line-height:1.45;border-radius:12px;padding:10px 12px;margin:6px 0;font-size:14px}
.kb-msg.kb-bot{background:#eef5ff;color:#0B5CAB}
.kb-msg.kb-user{background:#fff;border:1px solid #e2e8f0}
.kb-input{display:flex;gap:8px;border-top:1px solid #e2e8f0;padding:10px;background:#fff}
.kb-input input{flex:1;border:1px solid #e2e8f0;border-radius:10px;padding:10px 12px;font-size:14px}
.kb-input button{background:#0B5CAB;color:#fff;border:none;border-radius:10px;padding:10px 14px;font-weight:600;cursor:pointer}
.kb-input button:hover{background:#0c67c5}