.mp-agent-fab{position:fixed;right:18px;bottom:78px;z-index:9000;width:56px;height:56px;border-radius:50%;border:0;background:#b91c1c;color:#fff;font-size:24px;cursor:pointer;box-shadow:0 8px 24px rgba(0,0,0,.25)}
.mp-agent-panel{position:fixed;right:18px;bottom:144px;z-index:9001;width:min(360px,calc(100vw - 24px));height:420px;background:#fff;border-radius:14px;box-shadow:0 12px 40px rgba(0,0,0,.2);display:none;flex-direction:column;overflow:hidden}
.mp-agent-panel.is-open{display:flex}
.mp-agent-head{padding:12px 14px;background:#111827;color:#fff;font-weight:600}
.mp-agent-log{flex:1;overflow:auto;padding:12px;background:#f8fafc}
.mp-agent-msg{margin:0 0 10px;padding:8px 10px;border-radius:10px;font-size:14px;line-height:1.4;max-width:92%}
.mp-agent-msg--user{margin-left:auto;background:#fee2e2}
.mp-agent-msg--bot,.mp-agent-msg--assistant{background:#fff;border:1px solid #e2e8f0}
.mp-agent-msg--system{background:#ecfdf5;border:1px solid #bbf7d0;font-size:13px}
.mp-agent-form{display:flex;border-top:1px solid #e2e8f0}
.mp-agent-input{flex:1;border:0;padding:12px;font-size:14px}
.mp-agent-send{border:0;background:#b91c1c;color:#fff;padding:0 16px;cursor:pointer}