google-site-verification: googlec7212051a21f80e7.html
<script data-tiancigear-beacon>
(function(){
  if(!window.fetch||!location.pathname)return;
  var endpoint='/api/track-visit.php', now=Date.now(), key='tiancigear_analytics_session', session;
  function id(){if(window.crypto&&crypto.randomUUID)return crypto.randomUUID().replace(/-/g,'');return now.toString(36)+Math.random().toString(36).slice(2)+Math.random().toString(36).slice(2);}
  try{session=JSON.parse(localStorage.getItem(key)||'null');}catch(e){session=null;}
  if(!session||!session.id||now-(session.last||0)>1800000)session={id:id(),landing:location.pathname,last:now};
  function touchSession(){session.last=Date.now();try{localStorage.setItem(key,JSON.stringify(session));}catch(e){}}
  touchSession();
  var pageview=id(), active=0, started=document.visibilityState==='visible'?performance.now():0, scroll=0, cta=0, inquiryStarted=0, inquirySubmitted=0;
  function accrue(){if(started){active+=Math.max(0,performance.now()-started);started=0;}}
  function payload(exited){return {action:'engagement',pageview_id:pageview,duration_ms:Math.round(active),max_scroll_depth:scroll,engaged:active>=10000||scroll>=50||cta>0||inquiryStarted>0?1:0,cta_clicks:cta,inquiry_started:inquiryStarted,inquiry_submitted:inquirySubmitted,exited:exited?1:0};}
  function send(exited){accrue();if(document.visibilityState==='visible')touchSession();var body=JSON.stringify(payload(exited));if(exited&&navigator.sendBeacon){navigator.sendBeacon(endpoint,new Blob([body],{type:'application/json'}));}else{fetch(endpoint,{method:'POST',credentials:'same-origin',keepalive:true,headers:{'Content-Type':'application/json'},body:body}).catch(function(){});}if(!exited&&document.visibilityState==='visible')started=performance.now();}
  fetch(endpoint,{method:'POST',credentials:'same-origin',keepalive:true,headers:{'Content-Type':'application/json'},body:JSON.stringify({action:'pageview',path:location.pathname,ref:document.referrer||'',session_id:session.id,pageview_id:pageview,landing_path:session.landing})}).catch(function(){});
  function measureScroll(){var height=Math.max(document.documentElement.scrollHeight,document.body?document.body.scrollHeight:0);if(height>0)scroll=Math.max(scroll,Math.min(100,Math.round(((scrollY||document.documentElement.scrollTop)+innerHeight)*100/height)));}
  addEventListener('scroll',measureScroll,{passive:true});measureScroll();
  document.addEventListener('visibilitychange',function(){if(document.visibilityState==='hidden')send(false);else if(!started)started=performance.now();});
  document.addEventListener('click',function(e){var el=e.target.closest&&e.target.closest('.fresure-inquiry-trigger,.fresure-inquiry-btn,.btn-get-quote,.btn-inquire,[data-inquiry-template],a[href*="contact"],a[href*="wa.me"],a[href*="whatsapp"]');if(el){cta++;if(el.matches('.fresure-inquiry-trigger,.fresure-inquiry-btn,.btn-get-quote,.btn-inquire,[data-inquiry-template]'))inquiryStarted=1;}});
  document.addEventListener('focusin',function(e){if(e.target.closest&&e.target.closest('.fresure-inquiry-form'))inquiryStarted=1;});
  document.addEventListener('tiancigear:inquiry-submitted',function(){inquiryStarted=1;inquirySubmitted=1;send(false);});
  setInterval(function(){if(document.visibilityState==='visible')send(false);},15000);
  addEventListener('pagehide',function(){send(true);});
})();
</script>
<script src="/js/site-vitals.js" defer data-tiancigear-vitals></script>