#inst-ai-fab{position:fixed;right:22px;bottom:22px;z-index:99999;width:70px;height:70px;border-radius:50%;border:0;background:#1f7cff;color:#fff;font-size:34px;box-shadow:0 0 24px rgba(31,124,255,.45);cursor:pointer}
#inst-ai-chat{position:fixed;right:22px;bottom:104px;z-index:99999;width:360px;max-width:calc(100vw - 30px);background:#121b2b;color:#fff;border:1px solid #2d4368;border-radius:18px;overflow:hidden;display:none;box-shadow:0 18px 45px rgba(0,0,0,.45)}
#inst-ai-head{background:#214a8d;padding:13px 16px;font-weight:700}
#inst-ai-body{padding:14px}
.inst-ai-msg{background:#223148;border-radius:12px;padding:10px 12px;margin:8px 0;line-height:1.55;font-size:13px}
.inst-ai-btn{width:100%;margin:5px 0;padding:9px;border-radius:10px;border:1px solid #3f5b86;background:#1b2a41;color:#fff;cursor:pointer;text-align:left}
#inst-ai-input-wrap{display:flex;border-top:1px solid #304766}
#inst-ai-input{flex:1;border:0;outline:0;padding:12px;font-size:13px}
#inst-ai-send{width:64px;border:0;background:#1f7cff;color:#fff;font-weight:700}