diff --git a/site/src/layouts/Base.astro b/site/src/layouts/Base.astro
index 373ed30..ed50ee2 100644
--- a/site/src/layouts/Base.astro
+++ b/site/src/layouts/Base.astro
@@ -10,9 +10,21 @@ import TrustStrip from "../components/TrustStrip.astro";
 export interface Props {
   title: string;
   description?: string;
+  /** Opt in to the TrustedSite trustmark (order/checkout + top landing pages
+      only, to stay under the free 500 impressions/mo). */
+  trustedsite?: boolean;
 }
 
-const { title, description = "" } = Astro.props;
+const { title, description = "", trustedsite } = Astro.props;
+
+// TrustedSite trustmark is metered (free tier = 500 impressions/mo), so load it
+// ONLY where it lifts conversions: order/checkout flows + healthcare landing
+// pages (our paid/cold-traffic destinations). Auto-detected from the path so no
+// per-page wiring is needed; an explicit `trustedsite` prop can still override.
+const path = Astro.url?.pathname || "";
+const showTrustedSite =
+  trustedsite ??
+  (path.startsWith("/order") || path.startsWith("/services/healthcare"));
 
 // Read the nav + footer partials (extracted from prod homepage)
 let navHtml = "";
@@ -34,6 +46,12 @@ try {
     <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
     <script defer src="https://analytics.performancewest.net/script.js" data-website-id="55250014-ee15-44ac-a1f6-81dabad3fe0f"></script>
     <script defer src="/js/pw-analytics.js"></script>
+    {/* TrustedSite trustmark loads ONLY on pages that opt in (order/checkout +
+        top campaign landing pages) to stay under the free 500 impressions/mo.
+        Gated via the `trustedsite` flag, set by those pages. */}
+    {showTrustedSite && (
+      <script type="text/javascript" src="https://cdn.ywxi.net/js/1.js" async></script>
+    )}
     <link rel="preconnect" href="https://fonts.googleapis.com" />
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap" rel="stylesheet" />
@@ -63,6 +81,6 @@ try {
   <main class="flex-1">
     <slot />
   </main>
-  <TrustStrip />
+  <TrustStrip trustedsite={showTrustedSite} />
   <Fragment set:html={footerHtml} />
 </html>