diff --git a/Dockerfile b/Dockerfile
index abac60b..cca0e12 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,6 +12,8 @@ FROM nginx:1.27-alpine
 
 COPY nginx.conf /etc/nginx/conf.d/default.conf
 COPY --from=builder /app/dist/humainFlow-gui-a21/browser /usr/share/nginx/html
+COPY docker/40-runtime-config.sh /docker-entrypoint.d/40-runtime-config.sh
+RUN chmod +x /docker-entrypoint.d/40-runtime-config.sh
 
 EXPOSE 80
 
diff --git a/docker/40-runtime-config.sh b/docker/40-runtime-config.sh
new file mode 100644
index 0000000..9e579f8
--- /dev/null
+++ b/docker/40-runtime-config.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+set -eu
+
+cat >/usr/share/nginx/html/runtime-config.js <<EOF
+window.__runtimeConfig = {
+  turnstileSiteKey: "${TURNSTILE_SITE_KEY:-}"
+};
+EOF
diff --git a/src/app/layouts/admin-layout/admin-layout.css b/src/app/layouts/admin-layout/admin-layout.css
index a781ba6..f6e2358 100644
--- a/src/app/layouts/admin-layout/admin-layout.css
+++ b/src/app/layouts/admin-layout/admin-layout.css
@@ -74,7 +74,6 @@
 }
 
 .admin-shell__back-link {
-  margin-top: auto;
   display: flex;
   align-items: center;
   gap: 10px;
diff --git a/src/app/pages/auth/signup/signup.ts b/src/app/pages/auth/signup/signup.ts
index aaba72d..159a092 100644
--- a/src/app/pages/auth/signup/signup.ts
+++ b/src/app/pages/auth/signup/signup.ts
@@ -21,6 +21,9 @@ function hasValidPasswordComplexity(value: string): boolean {
 
 declare global {
   interface Window {
+    __runtimeConfig?: {
+      turnstileSiteKey?: string;
+    };
     turnstile?: {
       render: (container: string | HTMLElement, options: Record<string, unknown>) => string;
       remove: (widgetId: string) => void;
@@ -50,7 +53,7 @@ export class Signup extends FormUtility implements AfterViewInit, OnDestroy {
   isRegistering = signal(false);
   captchaToken = signal<string | null>(null);
   captchaLoading = signal(false);
-  captchaEnabled = !!String(environment.turnstileSiteKey ?? '').trim();
+  captchaEnabled = environment.turnstileEnabled;
   private captchaWidgetId: string | null = null;
 
   constructor() {
@@ -158,7 +161,7 @@ export class Signup extends FormUtility implements AfterViewInit, OnDestroy {
   }
 
   private async mountCaptcha() {
-    const siteKey = String(environment.turnstileSiteKey ?? '').trim();
+    const siteKey = this.turnstileSiteKey();
     const container = this.captchaContainer()?.nativeElement;
     if (!siteKey || !container) return;
 
@@ -227,4 +230,8 @@ export class Signup extends FormUtility implements AfterViewInit, OnDestroy {
       window.turnstile.reset(this.captchaWidgetId);
     }
   }
+
+  private turnstileSiteKey(): string {
+    return String(window.__runtimeConfig?.turnstileSiteKey ?? '').trim();
+  }
 }
diff --git a/src/environments/environment.development.ts b/src/environments/environment.development.ts
index 4348e90..e7e42e7 100644
--- a/src/environments/environment.development.ts
+++ b/src/environments/environment.development.ts
@@ -11,7 +11,7 @@ export const environment = {
     apiUrl: 'http://localhost:8080',
     assistantEnabled: false,
     tourModeAlwaysOn: true,
-    turnstileSiteKey: '',
+    turnstileEnabled: false,
     authorizationCallService: AuthorizationCallFakeService, // Assign the appropriate service here
     assistantCallService: AssistantCallServiceFake,
     flowsCallService: FlowsCallServiceFake,
diff --git a/src/environments/environment.staging.ts b/src/environments/environment.staging.ts
index 12555f8..b07f5fa 100644
--- a/src/environments/environment.staging.ts
+++ b/src/environments/environment.staging.ts
@@ -11,7 +11,7 @@ export const environment = {
     apiUrl: 'http://localhost:8080',
     assistantEnabled: true,
     tourModeAlwaysOn: false,
-    turnstileSiteKey: '',
+    turnstileEnabled: false,
     assistantCallService: AssistantCallService,
     authorizationCallService: AuthorizationCallService,
     flowsCallService: FlowsCallService,
diff --git a/src/environments/environment.ts b/src/environments/environment.ts
index 67671a5..8ad6e5e 100644
--- a/src/environments/environment.ts
+++ b/src/environments/environment.ts
@@ -11,7 +11,7 @@ export const environment = {
         production: true,
         assistantEnabled: false,
         tourModeAlwaysOn: false,
-        turnstileSiteKey: '',
+        turnstileEnabled: true,
         authorizationCallService: AuthorizationCallService,
         assistantCallService: AssistantCallService,
         flowsCallService: FlowsCallService,
diff --git a/src/index.html b/src/index.html
index 94817ab..2e1fcd8 100644
--- a/src/index.html
+++ b/src/index.html
@@ -6,6 +6,7 @@
   <base href="/">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <link rel="icon" type="image/x-icon" href="favicon.ico">
+  <script src="/runtime-config.js"></script>
 </head>
 <body>
   <app-root></app-root>
diff --git a/src/runtime-config.d.ts b/src/runtime-config.d.ts
new file mode 100644
index 0000000..fd6f499
--- /dev/null
+++ b/src/runtime-config.d.ts
@@ -0,0 +1,9 @@
+declare global {
+  interface Window {
+    __runtimeConfig?: {
+      turnstileSiteKey?: string;
+    };
+  }
+}
+
+export {};