.online-chat-widget{position:fixed;right:22px;bottom:24px;z-index:9999;font-family:Arial,"Microsoft YaHei",sans-serif}.online-chat-button{min-width:118px;height:44px;border:0;border-radius:22px;background:#0b70d8;color:#fff;box-shadow:0 8px 22px rgba(11,112,216,.28);font-size:15px;cursor:pointer}.online-chat-button:hover{background:#085eb8}.online-chat-panel{display:none;position:absolute;right:0;bottom:58px;width:340px;background:#fff;border-radius:12px;box-shadow:0 12px 38px rgba(0,0,0,.18);overflow:hidden;border:1px solid rgba(0,0,0,.06)}.online-chat-widget.is-open .online-chat-panel{display:block}.online-chat-head{height:48px;padding:0 14px;background:#0b70d8;color:#fff;display:flex;align-items:center;justify-content:space-between;font-size:16px;font-weight:bold}.online-chat-head button{border:0;background:transparent;color:#fff;font-size:26px;line-height:1;cursor:pointer}.online-chat-body{height:280px;overflow-y:auto;background:#f5f7fb;padding:14px}.online-chat-msg{margin-bottom:10px;clear:both}.online-chat-msg .bubble{display:inline-block;max-width:78%;padding:9px 11px;border-radius:8px;line-height:1.55;font-size:14px;word-break:break-word;text-align:left}.online-chat-msg .time{font-size:11px;color:#999;margin-top:4px}.online-chat-msg.customer{text-align:right}.online-chat-msg.customer .bubble{background:#0b70d8;color:#fff}.online-chat-msg.admin .bubble{background:#fff;border:1px solid #e8e8e8;color:#333}.online-chat-msg.system{text-align:center}.online-chat-msg.system .bubble{background:#e9eef7;color:#5a6473}.online-chat-form{display:flex;gap:8px;padding:10px;background:#fff;border-top:1px solid #eee}.online-chat-form textarea{flex:1;border:1px solid #ddd;border-radius:6px;padding:8px;resize:none;outline:none;font-size:14px;line-height:1.4}.online-chat-form textarea:focus{border-color:#0b70d8}.online-chat-form button{width:72px;border:0;border-radius:6px;background:#0b70d8;color:#fff;cursor:pointer}.online-chat-form button:disabled{background:#a6bfdc;cursor:not-allowed}@media(max-width:640px){.online-chat-widget{right:12px;bottom:14px}.online-chat-panel{position:fixed;left:12px;right:12px;bottom:68px;width:auto}.online-chat-body{height:52vh}.online-chat-button{min-width:104px;height:42px}}