diff --git a/nginx.conf b/nginx.conf
index d63bc1d..0a3927e 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -1,4 +1,4 @@
- Minimal nginx configuration for static site delivery
+# Minimal nginx configuration for static site delivery
 # Security headers are handled upstream by Traefik
 
 user nginx;
diff --git a/scripts/critical-css.mjs b/scripts/critical-css.mjs
index 9cf2ef2..1a57388 100644
--- a/scripts/critical-css.mjs
+++ b/scripts/critical-css.mjs
@@ -31,7 +31,11 @@ try {
         base: buildDir,
         html,
         inline: { strategy: 'default' }, // preload in head + link at end of body (no inline JS, CSP-safe)
-        dimensions: [{ width: 1280, height: 720 }],
+        dimensions: [
+            { width: 375, height: 667 },   // mobile (iPhone SE)
+            { width: 768, height: 1024 },  // tablet
+            { width: 1280, height: 720 },  // desktop
+        ],
         penthouse: { timeout: 30000 },
     });
     // Ensure _app asset paths stay absolute (critical may rewrite; host-based routing needs /_app/...)