#rac-ai-widget{position:fixed;right:20px;bottom:20px;z-index:999999;font-family:Arial,sans-serif}#rac-ai-toggle{width:58px;height:58px;border:0;border-radius:50%;font-size:28px;cursor:pointer;box-shadow:0 8px 25px rgba(0,0,0,.25);float:right}#rac-ai-panel{display:none;width:360px;max-width:calc(100vw - 30px);height:520px;background:#fff;border-radius:18px;overflow:hidden;box-shadow:0 15px 50px rgba(0,0,0,.28);clear:both;margin-bottom:12px}#rac-ai-panel.open{display:flex;flex-direction:column}#rac-ai-panel header{padding:16px;background:#c62828;color:#fff;display:flex;justify-content:space-between;align-items:center}#rac-ai-close{background:transparent;border:0;color:#fff;font-size:28px;cursor:pointer}#rac-ai-messages{flex:1;overflow:auto;padding:14px;background:#f6f6f6}.rac-msg{max-width:84%;padding:10px 12px;margin:8px 0;border-radius:14px;white-space:pre-wrap;line-height:1.45;font-size:14px}.rac-msg.assistant{background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.08)}.rac-msg.user{background:#ffe0b2;margin-left:auto}.thinking{opacity:.7}#rac-ai-quick{padding:8px;border-top:1px solid #eee;display:flex;flex-wrap:wrap;gap:6px}#rac-ai-quick button{font-size:12px;padding:7px 9px;border:1px solid #ddd;background:#fff;border-radius:14px;cursor:pointer}#rac-ai-form{display:flex;padding:10px;gap:8px;border-top:1px solid #eee}#rac-ai-input{flex:1;min-width:0;padding:11px;border:1px solid #ddd;border-radius:20px}#rac-ai-form button{border:0;border-radius:18px;padding:0 15px;background:#c62828;color:#fff;cursor:pointer}#rac-ai-hotline{text-align:center;padding:0 10px 12px;color:#c62828;font-weight:bold;text-decoration:none}@media(max-width:480px){#rac-ai-widget{right:12px;bottom:12px}#rac-ai-panel{height:70vh}}