<script>
(function(){
  var SB='https://wgajkzojkuctbabjavxu.supabase.co';
  var KEY='YOUR_ANON_KEY';
  function track(evt,data){
    fetch(SB+'/rest/v1/marketing_events',{method:'POST',
      headers:{'Content-Type':'application/json','apikey':KEY,'Authorization':'Bearer '+KEY},
      body:JSON.stringify({event:evt,data:JSON.stringify(data||{}),url:location.href,ts:new Date().toISOString()})
    });
  }
  window.elaTrack=track;
  track('page_view',{ref:document.referrer});
})();
// Then call: elaTrack('quiz_start'), elaTrack('quiz_complete'), elaTrack('signup')
</script>

CREATE TABLE IF NOT EXISTS marketing_events (
  id uuid DEFAULT gen_random_uuid() PRIMARY KEY,
  event text NOT NULL, data jsonb, url text,
  ts timestamptz DEFAULT now()
);