#lcai-btn{position:fixed;right:20px;bottom:20px;width:56px;height:56px;border-radius:50%;background:var(--lcai-btn,#0d6efd);color:#fff;font-size:26px;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:9999;box-shadow:0 4px 12px rgba(0,0,0,.3);overflow:visible}
#lcai-btn-icon{line-height:1}
#lcai-btn-img{flex-shrink:0}
#lcai-btn-text{line-height:1}
#lcai-btn-badge{position:absolute;top:-4px;right:-4px;min-width:20px;height:20px;border-radius:10px;background:#ff3b30;color:#fff;font-size:12px;font-weight:bold;display:flex;align-items:center;justify-content:center;padding:0 5px;box-shadow:0 1px 4px rgba(0,0,0,.4)}
#lcai-box{position:fixed;right:20px;bottom:90px;width:330px;max-width:92vw;height:460px;background:#fff;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,.3);z-index:9999;display:flex;flex-direction:column;overflow:hidden;font-family:Arial,sans-serif}
#lcai-head{background:var(--lcai-head,#0d6efd);color:#fff;padding:10px;display:flex;justify-content:space-between;align-items:center;gap:8px}
#lcai-head small{opacity:.9}
#lcai-agent{display:flex;align-items:center;gap:8px;flex:1;min-width:0}
#lcai-agent-info{min-width:0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
#lcai-head-img{width:40px;height:40px;border-radius:50%;object-fit:cover;border:2px solid rgba(255,255,255,.7);flex-shrink:0}
#lcai-head-fallback{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.25);display:flex;align-items:center;justify-content:center;font-weight:bold;font-size:18px;flex-shrink:0}
#lcai-status{font-size:11px;color:#b6ff9e}
#lcai-head-btns{display:flex;align-items:center;flex-shrink:0}
#lcai-close{background:rgba(255,255,255,.2);border:none;color:#fff;font-size:14px;font-weight:bold;cursor:pointer;border-radius:5px;padding:4px 9px}
#lcai-lead-head{display:flex;justify-content:space-between;align-items:center}
#lcai-lead-close{background:transparent;border:none;font-size:14px;font-weight:bold;cursor:pointer;color:#555;padding:2px 8px}
#lcai-msgs{flex:1;overflow-y:auto;padding:10px;background:#f3f4f6}
.lcai-row{display:flex;align-items:flex-end;gap:6px;margin:5px 0}
.lcai-row.guest{justify-content:flex-end}
.lcai-ava{width:26px;height:26px;border-radius:50%;object-fit:cover;flex-shrink:0}
.lcai-ava-fallback{width:26px;height:26px;border-radius:50%;background:#9aa5b1;color:#fff;font-size:12px;font-weight:bold;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.lcai-m{padding:7px 10px;border-radius:10px;max-width:82%;font-size:13.5px;line-height:1.4;word-wrap:break-word}
.lcai-guest{background:var(--lcai-guest,#0d6efd);color:#fff}
.lcai-bot,.lcai-owner{background:#fff;border:1px solid #ddd}
.lcai-time{font-size:10px;opacity:.6;display:block;margin-top:3px}
#lcai-input-row{display:flex;border-top:1px solid #ddd}
#lcai-input{flex:1;border:none;padding:10px;outline:none}
#lcai-send{background:var(--lcai-head,#0d6efd);color:#fff;border:none;padding:0 16px;cursor:pointer;font-size:16px}
#lcai-verify{padding:10px;background:#eef4ff;border-top:1px solid #d5e2ff}
#lcai-verify-yes{background:var(--lcai-head,#0d6efd);color:#fff;border:none;padding:8px;width:100%;border-radius:6px;cursor:pointer;margin-top:5px;font-weight:bold}
#lcai-verify-no{background:transparent;border:none;color:#555;width:100%;padding:6px;cursor:pointer;font-size:12px;text-decoration:underline}
#lcai-newchat{padding:10px;background:#fff;border-top:1px solid #eee}
#lcai-newchat-btn{background:var(--lcai-head,#0d6efd);color:#fff;border:none;padding:9px;width:100%;border-radius:6px;cursor:pointer;font-weight:bold}
#lcai-callback{padding:10px;background:#fff;border-top:1px solid #eee}
#lcai-callback-btn{background:#25D366;color:#fff;border:none;padding:9px;width:100%;border-radius:6px;cursor:pointer;font-weight:bold}
.lcai-form-error{background:#fdecea;color:#b71c1c;border:1px solid #f5c6cb;border-radius:6px;padding:7px 9px;margin-bottom:6px;font-size:12.5px;line-height:1.4}
#lcai-identity{padding:10px;background:#eef4ff;border-top:1px solid #d5e2ff}
#lcai-identity input{width:100%;margin:4px 0;padding:7px;border:1px solid #ccc;border-radius:5px;box-sizing:border-box}
#lcai-id-start{background:var(--lcai-head,#0d6efd);color:#fff;border:none;padding:8px;width:100%;border-radius:6px;cursor:pointer;margin-top:5px;font-weight:bold}
#lcai-id-skip{background:transparent;border:none;color:#555;width:100%;padding:6px;cursor:pointer;font-size:12px;text-decoration:underline}
#lcai-lead{padding:10px;background:#fffbe6;border-top:1px solid #eee}
#lcai-lead input{width:100%;margin:4px 0;padding:7px;border:1px solid #ccc;border-radius:5px;box-sizing:border-box}
#lcai-lead-send{background:#25D366;color:#fff;border:none;padding:8px;width:100%;border-radius:6px;cursor:pointer;margin-top:5px}
.lcai-typing{font-style:italic;opacity:.7}