diff --git a/frontend/nginx.conf b/frontend/nginx.conf
index 3acc55381f..21dc36d3a7 100644
--- a/frontend/nginx.conf
+++ b/frontend/nginx.conf
@@ -28,6 +28,12 @@ http {
     keepalive_timeout  65;
 
     gzip  on;
+    # nginx gzips only text/html by default; add asset types (~5-6x smaller).
+    gzip_types text/css application/javascript application/json image/svg+xml;
+    gzip_min_length 1024;
+    gzip_vary on;
+    # GKE LB adds a Via header; default gzip_proxied off would skip every request.
+    gzip_proxied any;
 
     # Non-root user will not have access to default
     # /var/cache/nginx/ prefix.
diff --git a/frontend/src/components/custom-tools/add-llm-profile/AddLlmProfile.css b/frontend/src/components/custom-tools/add-llm-profile/AddLlmProfile.css
index 69be0e646f..aa6d44c188 100644
--- a/frontend/src/components/custom-tools/add-llm-profile/AddLlmProfile.css
+++ b/frontend/src/components/custom-tools/add-llm-profile/AddLlmProfile.css
@@ -1,18 +1,16 @@
 /* Styles for AddLlmProfile */
 
-/* The settings modal's content column (.conn-modal-col) is the real scroll
-   container. .settings-body-pad-top declares its own overflow-y: auto with no
-   bounded height, which does nothing except register a nested scroll context
-   that would stop the sticky footer below from pinning to .conn-modal-col.
-   Drop it back to visible for this form. */
-.settings-body-pad-top.add-llm-profile-scroll-root {
-  overflow: visible;
+.conn-modal-form-pad-left:has(> .add-llm-profile-body) {
+  padding: 8px 16px;
+}
+
+.conn-modal-row:has(.add-llm-profile-body) {
+  height: auto !important;
+}
+.conn-modal-col:has(.add-llm-profile-body) {
+  overflow-y: visible;
 }
 
-/* Pin the submit button to the bottom of the scrollable panel so it stays
-   visible as the form grows (e.g. Advanced Settings expanded) instead of
-   flowing past the modal. Background is set inline from the antd theme token
-   so scrolling fields don't show through. */
 .add-llm-profile-footer {
   position: sticky;
   bottom: 0;
diff --git a/frontend/src/components/custom-tools/add-llm-profile/AddLlmProfile.jsx b/frontend/src/components/custom-tools/add-llm-profile/AddLlmProfile.jsx
index 6740cf0cda..80cf854c2d 100644
--- a/frontend/src/components/custom-tools/add-llm-profile/AddLlmProfile.jsx
+++ b/frontend/src/components/custom-tools/add-llm-profile/AddLlmProfile.jsx
@@ -453,7 +453,7 @@ function AddLlmProfile({
   };
 
   return (
-    <div className="settings-body-pad-top add-llm-profile-scroll-root">
+    <div className="add-llm-profile-body">
       <Form
         form={form}
         layout="vertical"
diff --git a/frontend/vite.config.js b/frontend/vite.config.js
index 397f001312..9ead29294f 100644
--- a/frontend/vite.config.js
+++ b/frontend/vite.config.js
@@ -143,6 +143,10 @@ export default defineConfig(({ mode }) => {
       target: "esnext",
       outDir: "build",
       sourcemap: true,
+      // Single stylesheet: per-chunk CSS loads in navigation order, making
+      // equal-specificity cross-component rules resolve unpredictably. JS
+      // splitting is unaffected.
+      cssCodeSplit: false,
       // Chunk size warning limit
       chunkSizeWarningLimit: 1000,
       rollupOptions: {