{# Both bootstrap.min.css (190KB) and style.css (129KB) async-loaded via
preload + onload swap. Inline critical CSS above covers above-the-fold. #}
{# Third-party scripts: GA / ShareThis / Cloudflare on idle.
AdSense is special — show_ads_impl_fy2021.js was eating 2.1s CPU,
so it loads ONLY when an ad slot is near the viewport. #}
