#bbsc-bubble{position:fixed;bottom:18px;right:18px;width:56px;height:56px;border-radius:999px;background:#111;color:#fff;border:none;cursor:pointer;z-index:99999;font-size:20px}
#bbsc-panel{position:fixed;bottom:86px;right:18px;width:320px;max-height:520px;background:#fff;border:1px solid #e5e5e5;border-radius:14px;box-shadow:0 10px 30px rgba(0,0,0,.15);display:none;flex-direction:column;overflow:hidden;z-index:99999;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial}
#bbsc-header{padding:10px 12px;border-bottom:1px solid #eee;font-weight:700}
#bbsc-tip{padding:8px 12px;border-bottom:1px solid #eee;font-size:12px;color:#111}
#bbsc-messages{padding:10px;overflow:auto;flex:1;font-size:14px;line-height:1.35}
.bbsc-msg{margin:8px 0;padding:8px 10px;border-radius:12px;max-width:92%;white-space:pre-wrap}
.bbsc-user{background:#111;color:#fff;margin-left:auto}
.bbsc-bot{background:#f3f3f3;color:#111;margin-right:auto}
#bbsc-input-row{display:flex;border-top:1px solid #eee}
#bbsc-input{flex:1;padding:10px;border:none;outline:none;font-size:14px}
#bbsc-send{width:70px;border:none;background:#111;color:#fff;cursor:pointer}


#bbsc-presets{display:flex;flex-wrap:wrap;gap:8px;padding:10px}
.bbsc-preset-btn{background:#f3f4f6;border:1px solid #e5e7eb;border-radius:999px;padding:6px 12px;font-size:13px;cursor:pointer}
.bbsc-preset-btn:hover{background:#e5e7eb}