(function(){
 if(window.__visitorStatsLoaded){return;}window.__visitorStatsLoaded=true;
 function id(k){var key='vs_'+k,v=localStorage.getItem(key);if(!v){v=String(Math.floor(100000000+Math.random()*900000000));localStorage.setItem(key,v);}return v;}
 var visitorId=id('visitor_id'),sessionId=sessionStorage.getItem('vs_session_id');
 if(!sessionId){sessionId=String(Date.now())+String(Math.floor(Math.random()*10000));sessionStorage.setItem('vs_session_id',sessionId);}
 var pageviewId=0,start=Date.now();
 var script=document.currentScript||document.getElementById('visitor-stats-js'),endpointBase='/visitor_stats';
 if(script&&script.src){var a=document.createElement('a');a.href=script.src;var idx=a.pathname.indexOf('/visitor_stats/showjs');if(idx>=0){endpointBase=a.pathname.substring(0,idx)+'/visitor_stats';}}
 function api(path){return endpointBase+path;}
 function textOf(el){return ((el&&((el.innerText||el.value||(el.getAttribute&&el.getAttribute('title'))||'')))||'').replace(/\s+/g,' ').trim();}
 function shortText(el){if(!el){return '';}var attrs=['data-title','data-text','aria-label','title','alt','placeholder','value'];for(var i=0;i<attrs.length;i++){if(el.getAttribute){var v=el.getAttribute(attrs[i])||'';v=v.replace(/\s+/g,' ').trim();if(v&&v.length<=40){return v;}}}var own='';for(var n=el.firstChild;n;n=n.nextSibling){if(n.nodeType===3){own+=n.nodeValue+' ';}}own=own.replace(/\s+/g,' ').trim();if(own&&own.length<=40){return own;}var txt=textOf(el);if(txt&&txt.length<=40){return txt;}return '';}
 function hrefOf(el){return ((el&&el.getAttribute&&el.getAttribute('href'))||'').replace(/\s+/g,' ').trim();}
 function eventTextOf(el,type){var href=hrefOf(el);if(href.indexOf('tel:')===0||href.indexOf('mailto:')===0){return href;}var txt=shortText(el);if(txt){return txt;}var map={phone:'\u7535\u8bdd\u6309\u94ae',email:'\u90ae\u7bb1\u6309\u94ae',wechat:'\u5fae\u4fe1\u6309\u94ae',qq:'QQ\u54a8\u8be2',message:'\u54a8\u8be2/\u7559\u8a00',form_submit:'\u8868\u5355\u63d0\u4ea4'};return map[type]||'';}
 function post(url,data){data.visitor_id=visitorId;data.session_id=sessionId;var body=JSON.stringify(data);if(navigator.sendBeacon){try{navigator.sendBeacon(url,new Blob([body],{type:'application/json'}));return;}catch(e){}}fetch(url,{method:'POST',headers:{'Content-Type':'application/json'},body:body,credentials:'same-origin'}).catch(function(){});}
 function contextOf(el){var arr=[],n=el,deep=0;while(n&&n!==document&&deep<3){if(n.getAttribute){arr.push(n.getAttribute('href')||'',n.getAttribute('class')||'',n.getAttribute('id')||'',n.getAttribute('data-type')||'',n.getAttribute('data-action')||'',n.getAttribute('data-vs-event')||'',n.getAttribute('aria-label')||'',n.getAttribute('title')||'');}if(deep===0){arr.push(shortText(n));}n=n.parentNode;deep++;}return arr.join(' ').toLowerCase();}
function typeOf(el){var all=contextOf(el),href=(el&&el.getAttribute?el.getAttribute('href')||'':'').toLowerCase();
 if(href.indexOf('tel:')===0||/\u7535\u8bdd|\u624b\u673a|\u62e8\u6253|\u70ed\u7ebf|call|phone|tel/.test(all))return 'phone';
 if(href.indexOf('mailto:')===0||/\u90ae\u7bb1|\u90ae\u4ef6|email|mail/.test(all))return 'email';
 if(/\u5fae\u4fe1|wechat|weixin|wx|\u4e8c\u7ef4\u7801/.test(all))return 'wechat';
 if(/\bqq\b|qq\u54a8\u8be2|\u5ba2\u670dqq/.test(all))return 'qq';
 if(/\u7559\u8a00|\u8be2\u4ef7|\u54a8\u8be2|\u7acb\u5373\u54a8\u8be2|\u5728\u7ebf\u54a8\u8be2|\u83b7\u53d6\u8d44\u6599|message|inquiry|quote|consult/.test(all))return 'message';
 return '';
}function clickable(target){var el=target;while(el&&el!==document){if(el.tagName==='A'||el.tagName==='BUTTON'||el.tagName==='INPUT'||el.tagName==='TEXTAREA'||el.tagName==='SELECT'||(el.getAttribute&&el.getAttribute('role')==='button')||el.onclick){return el;}el=el.parentNode;}return target;}
 fetch(api('/track'),{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({visitor_id:visitorId,session_id:sessionId,url:location.href,path:location.pathname,title:document.title,referer:document.referrer,language:navigator.language,timezone:(Intl.DateTimeFormat().resolvedOptions().timeZone||''),screen_width:screen.width,screen_height:screen.height}),credentials:'same-origin'}).then(function(r){return r.json();}).then(function(r){pageviewId=r.pageview_id||0;}).catch(function(){});
 document.addEventListener('click',function(e){var el=clickable(e.target),t=typeOf(el);if(t){post(api('/event'),{pageview_id:pageviewId,event_type:t,url:location.href,element_text:eventTextOf(el,t).slice(0,255),element_href:hrefOf(el).slice(0,500)});}},true);
 document.addEventListener('submit',function(e){var f=e.target,fields=[],inputs=f.querySelectorAll?f.querySelectorAll('input,textarea,select'):[];for(var i=0;i<inputs.length&&i<6;i++){var name=inputs[i].getAttribute('name')||inputs[i].getAttribute('placeholder')||inputs[i].type||'';if(name){fields.push(name);}}post(api('/event'),{pageview_id:pageviewId,event_type:'form_submit',url:location.href,element_text:(textOf(f)||'\\u8868\\u5355\\u63d0\\u4ea4')+' '+fields.join(','),element_href:(f.getAttribute('action')||location.href).slice(0,500)});},true);
 setInterval(function(){post(api('/heartbeat'),{});},30000);
 function save(){post(api('/duration'),{pageview_id:pageviewId,duration:Math.round((Date.now()-start)/1000)});}window.addEventListener('beforeunload',save);setInterval(save,15000);
})();