#c2k-agent-root{position:fixed;right:22px;bottom:22px;z-index:99999;font-family:-apple-system,Segoe UI,Roboto,Arial,sans-serif}
#c2k-agent-bubble{width:60px;height:60px;border-radius:50%;background:#0866ff;border:0;box-shadow:0 12px 30px rgba(8,102,255,.35);cursor:pointer;display:flex;align-items:center;justify-content:center}
.c2k-agent-bubble-icon{font-size:26px;line-height:1}
#c2k-agent-panel{width:340px;max-width:calc(100vw - 40px);height:480px;max-height:calc(100vh - 100px);background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(11,23,42,.25);display:flex;flex-direction:column;overflow:hidden}
.c2k-agent-header{background:#071528;color:#fff;padding:14px 16px;display:flex;align-items:center;justify-content:space-between;font-weight:700;font-size:14px}
.c2k-agent-header button{background:none;border:0;color:#fff;font-size:22px;line-height:1;cursor:pointer;padding:0}
#c2k-agent-messages{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px;background:#f5f8fc}
.c2k-agent-msg{max-width:82%;padding:10px 13px;border-radius:12px;font-size:14px;line-height:1.5;white-space:pre-wrap}
.c2k-agent-user{align-self:flex-end;background:#0866ff;color:#fff;border-bottom-right-radius:3px}
.c2k-agent-bot{align-self:flex-start;background:#fff;color:#0b172a;border:1px solid #dfe7f2;border-bottom-left-radius:3px}
.c2k-agent-typing{color:#8fa3bf}
#c2k-agent-form{display:flex;gap:8px;padding:10px;border-top:1px solid #dfe7f2;background:#fff}
#c2k-agent-input{flex:1;border:1px solid #dfe7f2;border-radius:8px;padding:9px 11px;font-size:14px}
#c2k-agent-form button{background:#0866ff;color:#fff;border:0;border-radius:8px;padding:0 16px;font-weight:700;cursor:pointer;font-size:14px}
@media(max-width:480px){#c2k-agent-root{right:12px;bottom:12px}#c2k-agent-panel{width:calc(100vw - 24px)}}