#xcs-button{position:fixed;right:22px;bottom:22px;z-index:9998;border:0;border-radius:28px;background:#1d4ed8;color:#fff;padding:13px 18px;display:flex;align-items:center;gap:9px;font:600 14px/1.2 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;box-shadow:0 8px 28px rgba(30,64,175,.28);cursor:pointer;transition:transform .18s,box-shadow .18s}
#xcs-button:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(30,64,175,.34)}
#xcs-button svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.8}
#xcs-panel{position:fixed;right:22px;bottom:82px;z-index:9999;width:min(390px,calc(100vw - 28px));height:min(650px,calc(100dvh - 110px));background:#fff;border:1px solid #e5e7eb;border-radius:20px;box-shadow:0 22px 65px rgba(15,23,42,.22);display:none;overflow:hidden;font:14px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;color:#172033}
#xcs-panel.open{display:flex;flex-direction:column}
#xcs-panel *{box-sizing:border-box}
.xcs-head{padding:16px 17px 13px;background:linear-gradient(135deg,#173b8f,#2563eb);color:#fff;flex:none}
.xcs-headrow{display:flex;align-items:center;gap:10px}
.xcs-avatar{width:36px;height:36px;border-radius:12px;background:rgba(255,255,255,.16);display:grid;place-items:center;font-size:17px;font-weight:800}
.xcs-title{font-size:16px;font-weight:700;letter-spacing:.2px}
.xcs-sub{font-size:11px;opacity:.82;margin-top:2px}
.xcs-iconbtn{margin-left:auto;border:0;background:rgba(255,255,255,.12);color:#fff;width:31px;height:31px;border-radius:9px;font-size:21px;line-height:1;cursor:pointer}
.xcs-note{padding:7px 14px;background:#eff6ff;color:#4b5563;font-size:11px;border-bottom:1px solid #e5e7eb;flex:none}
.xcs-messages{flex:1;min-height:0;overflow-y:auto;padding:15px 13px 10px;background:#f8fafc;overscroll-behavior:contain}
.xcs-msg{display:flex;margin:0 0 12px;gap:7px;align-items:flex-end}
.xcs-msg.visitor{justify-content:flex-end}
.xcs-bubble{max-width:85%;padding:10px 12px;border-radius:14px 14px 14px 4px;background:#fff;border:1px solid #e5e7eb;white-space:pre-wrap;word-break:break-word;box-shadow:0 1px 2px rgba(15,23,42,.03)}
.xcs-msg.visitor .xcs-bubble{background:#2563eb;color:#fff;border-color:#2563eb;border-radius:14px 14px 4px 14px}
.xcs-msg.system{justify-content:center}.xcs-msg.system .xcs-bubble{max-width:95%;padding:6px 10px;font-size:11px;color:#64748b;background:#eef2f7;border:0;border-radius:9px}
.xcs-typing{display:inline-flex;gap:4px;padding:3px 1px}.xcs-typing i{width:6px;height:6px;border-radius:50%;background:#94a3b8;animation:xcsblink 1.2s infinite}.xcs-typing i:nth-child(2){animation-delay:.15s}.xcs-typing i:nth-child(3){animation-delay:.3s}@keyframes xcsblink{0%,60%,100%{opacity:.35;transform:translateY(0)}30%{opacity:1;transform:translateY(-2px)}}
.xcs-quick{display:flex;gap:6px;overflow-x:auto;padding:9px 12px 4px;background:#f8fafc;flex:none;scrollbar-width:none}.xcs-quick::-webkit-scrollbar{display:none}
.xcs-quick button{flex:none;border:1px solid #dbe4f0;background:#fff;color:#334155;border-radius:15px;padding:5px 10px;font-size:11px;cursor:pointer}.xcs-quick button:hover{border-color:#2563eb;color:#1d4ed8}
.xcs-compose{padding:11px 12px 12px;background:#fff;border-top:1px solid #e5e7eb;flex:none}
.xcs-inputrow{display:flex;gap:8px;align-items:flex-end}
#xcs-input{flex:1;min-height:42px;max-height:104px;resize:none;border:1px solid #dbe1ea;border-radius:12px;padding:10px 11px;font:13px/1.45 inherit;color:#172033;outline:none;background:#fff}
#xcs-input:focus{border-color:#2563eb;box-shadow:0 0 0 3px rgba(37,99,235,.08)}
#xcs-send{height:42px;flex:none;border:0;border-radius:12px;background:#2563eb;color:#fff;padding:0 15px;font-weight:650;cursor:pointer}#xcs-send:disabled{background:#94a3b8;cursor:not-allowed}
.xcs-actions{display:flex;align-items:center;margin-top:8px;gap:10px}.xcs-human{border:0;background:none;color:#1d4ed8;padding:0;font-size:11px;cursor:pointer}.xcs-privacy{margin-left:auto;color:#94a3b8;font-size:10px}
@media(max-width:600px){#xcs-button{right:14px;bottom:14px;padding:12px 15px}#xcs-panel{right:7px;bottom:72px;width:calc(100vw - 14px);height:min(680px,calc(100dvh - 84px));border-radius:17px}.xcs-bubble{max-width:89%}}
@media(prefers-reduced-motion:reduce){#xcs-button{transition:none}.xcs-typing i{animation:none}}