diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3dae8f9..7b56c4d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -70,6 +70,7 @@ By: Codex (GPT-5)
 | 15.01.2026 | 🏗️ Planning | ID: US_000045 Kriterien konkretisiert (lokale Zeit, OS-Login, Auto-Reaktivierung). By: Codex (GPT-5) |
 | 15.01.2026 | 🏗️ Planning | ID: US_000046/TASK_000055 Update-Service Erreichbarkeit anzeigen. By: Codex (GPT-5) |
 | 15.01.2026 | ⚙️ Code | ID: US_000046 Update-Service Statusanzeige implementiert. By: Codex (GPT-5) |
+| 15.01.2026 | ⚙️ Code | ID: Update-Service Status zeigt Dev/Prod und nutzt konsistente Panel-Styles. By: Codex (GPT-5) |
 | 15.01.2026 | ⚙️ Code | ID: Makefile restart-Target hinzugefuegt. By: Codex (GPT-5) |
 
 ---
diff --git a/backend/models.py b/backend/models.py
index 2801934..afc8c69 100644
--- a/backend/models.py
+++ b/backend/models.py
@@ -81,3 +81,4 @@ class UpdateServiceStatus(BaseModel):
     status_code: Optional[int] = None
     error: Optional[str] = None
     checked_url: str
+    environment: str
diff --git a/backend/templates/index.html b/backend/templates/index.html
index 6da5e9b..733ca73 100644
--- a/backend/templates/index.html
+++ b/backend/templates/index.html
@@ -128,13 +128,13 @@
   <section id="updateSection" class="panel-section hidden">
     <h3><i data-lucide="download"></i> Update-Verwaltung</h3>
 
-    <div id="updateStatus" style="background: rgba(10, 14, 20, 0.6); border: 1px solid var(--color-border); border-left: 3px solid var(--color-accent); padding: 1rem; border-radius: var(--radius-sm); margin-bottom: 1rem;">
+    <div id="updateStatus" style="background: var(--bg-panel); border: 1px solid var(--border-main); border-left: 3px solid var(--primary); padding: 1rem; border-radius: var(--radius-sm); margin-bottom: 1rem;">
       <div class="spinner" style="margin: 0 auto;"></div>
       <p class="text-center text-muted mt-1">Lade Update-Status...</p>
     </div>
 
     <!-- Enrollment Section -->
-    <div id="enrollmentSection" class="hidden" style="margin-bottom: 1rem; padding: 1rem; background: rgba(255, 255, 255, 0.05); border-radius: var(--radius-sm); border: 1px dashed var(--color-border);">
+    <div id="enrollmentSection" class="hidden" style="margin-bottom: 1rem; padding: 1rem; background: var(--bg-panel); border-radius: var(--radius-sm); border: 1px dashed var(--border-main);">
       <h4 style="margin-top: 0; margin-bottom: 0.5rem;"><i data-lucide="link"></i> Gerät registrieren (Enrollment)</h4>
       <p class="text-muted" style="font-size: 0.875rem; margin-bottom: 0.5rem;">
         Dieses Gerät ist noch nicht beim Update-Service registriert. Bitte geben Sie einen gültigen Enrollment-Token ein.
@@ -442,6 +442,9 @@
         const serviceBadge = serviceStatus.reachable
           ? '<span class="badge success"><i data-lucide="server"></i> Online</span>'
           : '<span class="badge error"><i data-lucide="server-off"></i> Offline</span>';
+        const envLabel = serviceStatus.environment
+          ? serviceStatus.environment.toUpperCase()
+          : 'UNKNOWN';
         const serviceHint = serviceStatus.status_code
           ? `HTTP ${serviceStatus.status_code}`
           : (serviceStatus.error || 'keine Antwort');
@@ -455,6 +458,7 @@
             <div>
               <div class="text-muted" style="font-size: 0.75rem; text-transform: uppercase; margin-bottom: 0.25rem;">Update-Service</div>
               <div>${serviceBadge}</div>
+              <div class="badge neutral" style="display: inline-flex; margin-top: 0.25rem;">${envLabel}</div>
               <div class="text-muted" style="font-size: 0.75rem;">${serviceStatus.url} (${serviceHint})</div>
             </div>
             <div>
diff --git a/backend/update.py b/backend/update.py
index f52c20c..b30d40e 100644
--- a/backend/update.py
+++ b/backend/update.py
@@ -231,8 +231,16 @@ def get_service_status(settings: Settings) -> Dict[str, Any]:
             "status_code": None,
             "error": "update service url not configured",
             "checked_url": "",
+            "environment": "unknown",
         }
 
+    env = "prod"
+    lowered = base_url.lower()
+    if "://dev." in lowered or lowered.startswith("dev."):
+        env = "dev"
+    elif "://staging." in lowered or lowered.startswith("staging."):
+        env = "staging"
+
     check_url = base_url
     try:
         with httpx.Client(timeout=3.0) as client:
@@ -243,6 +251,7 @@ def get_service_status(settings: Settings) -> Dict[str, Any]:
             "status_code": response.status_code,
             "error": None,
             "checked_url": check_url,
+            "environment": env,
         }
     except Exception as exc:
         return {
@@ -251,4 +260,5 @@ def get_service_status(settings: Settings) -> Dict[str, Any]:
             "status_code": None,
             "error": str(exc),
             "checked_url": check_url,
+            "environment": env,
         }
diff --git a/docs/USAGE.md b/docs/USAGE.md
index b8d8600..b32af01 100644
--- a/docs/USAGE.md
+++ b/docs/USAGE.md
@@ -54,7 +54,7 @@ curl -X POST -H "Authorization: Bearer $token" \
 ### Update-API (lokal)
 Alle Update-Endpunkte erfordern Admin-Auth.
 - `GET /update/status`
-- `GET /update/service-status` (zeigt URL und Erreichbarkeit des Update-Services)
+- `GET /update/service-status` (zeigt URL, Erreichbarkeit und Dev/Prod-Umgebung)
 - `POST /update/enroll` (optional Body: `{ "enroll_token": "..." }`)
 - `POST /update/check`
 - `POST /update/apply` (optional Body: `{ "version": "x.y.z" }`)
diff --git a/project-management/requirements/stories/US_000046.md b/project-management/requirements/stories/US_000046.md
index e7677c2..e39a58f 100644
--- a/project-management/requirements/stories/US_000046.md
+++ b/project-management/requirements/stories/US_000046.md
@@ -11,6 +11,7 @@ damit ich erkenne, ob das Geraet gegen Dev oder Prod konfiguriert ist.
 - When der Statusbereich angezeigt wird
 - Then sehe ich die konfigurierte Update-Service URL
 - And einen Online/Offline-Status basierend auf Erreichbarkeit
+- And eine Anzeige, ob es sich um Dev/Prod handelt (abgeleitet aus der URL)
 - And die Anzeige aktualisiert sich bei Status-Refresh
 
 ## Task-Platzhalter
diff --git a/project-management/requirements/tasks/TASK_000055.md b/project-management/requirements/tasks/TASK_000055.md
index 70a2c4d..1430f7a 100644
--- a/project-management/requirements/tasks/TASK_000055.md
+++ b/project-management/requirements/tasks/TASK_000055.md
@@ -11,7 +11,7 @@ US_000046
 
 ## Beschreibung
 - `GET /update/service-status` liefert URL, Reachability, Status-Code.
-- UI zeigt Status im Update-Bereich.
+- UI zeigt Status im Update-Bereich inkl. Dev/Prod.
 
 ## Definition of Done (DoD)
 - Statusanzeige funktioniert auch bei Fehlern (Offline).