description = "GTM + GA4 diferido post-load (PageSpeed optimizado)"
==
<script>
(function () {
  var loaded = false;
  function loadTracking() {
    if (loaded) return;
    loaded = true;

    // Google Tag Manager
    (function (w, d, s, l, i) {
      w[l] = w[l] || [];
      w[l].push({ 'gtm.start': new Date().getTime(), event: 'gtm.js' });
      var f = d.getElementsByTagName(s)[0],
        j = d.createElement(s),
        dl = l != 'dataLayer' ? '&l=' + l : '';
      j.async = true;
      j.src = 'https://www.googletagmanager.com/gtm.js?id=' + i + dl;
      f.parentNode.insertBefore(j, f);
    })(window, document, 'script', 'dataLayer', 'GTM-P9B758T');

    // GA4
    var g = document.createElement('script');
    g.async = true;
    g.src = 'https://www.googletagmanager.com/gtag/js?id=G-V6SX1D3XVE';
    document.head.appendChild(g);
    window.dataLayer = window.dataLayer || [];
    function gtag() { dataLayer.push(arguments); }
    window.gtag = gtag;
    gtag('js', new Date());
    gtag('config', 'G-V6SX1D3XVE');
  }

  function schedule() {
    if ('requestIdleCallback' in window) {
      requestIdleCallback(function () { loadTracking(); }, { timeout: 3500 });
    } else {
      setTimeout(loadTracking, 2500);
    }
  }

  ['pointerdown', 'keydown', 'scroll', 'touchstart'].forEach(function (ev) {
    window.addEventListener(ev, function () { loadTracking(); }, { once: true, passive: true });
  });

  if (document.readyState === 'complete') {
    schedule();
  } else {
    window.addEventListener('load', schedule);
  }
})();
</script>