diff --git a/app/Http/Controllers/Web/CategoryController.php b/app/Http/Controllers/Web/CategoryController.php
new file mode 100644
index 00000000..02b74eee
--- /dev/null
+++ b/app/Http/Controllers/Web/CategoryController.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Http\Controllers\Web;
+
+use App\Http\Controllers\Controller;
+use App\Services\Web\CategoryPageData;
+use App\Support\WebPortalContext;
+use Illuminate\Contracts\View\View;
+
+class CategoryController extends Controller
+{
+    // $edition stammt aus dem Gruppen-Prefix {edition} und steht positionsbedingt
+    // vor {slug}; es wird hier nicht gebraucht, muss aber in der Signatur stehen.
+    public function __invoke(string $edition, string $slug, CategoryPageData $pageData): View
+    {
+        return view('web.kategorie', $pageData->build(WebPortalContext::fromRequest(), $slug));
+    }
+}
diff --git a/app/Services/Web/CategoryPageData.php b/app/Services/Web/CategoryPageData.php
new file mode 100644
index 00000000..129b7342
--- /dev/null
+++ b/app/Services/Web/CategoryPageData.php
@@ -0,0 +1,218 @@
+<?php
+
+namespace App\Services\Web;
+
+use App\Models\Category;
+use App\Models\Company;
+use App\Models\PressRelease;
+use App\Scopes\PortalScope;
+use App\Support\WebPortalContext;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Support\Carbon;
+
+/**
+ * Datenaufbereitung der Kategorie-/Branchenseite je Ausgabe: Lead-/Top-/Feed-
+ * Meldungen, Kennzahlen, aktivste Newsrooms sowie Unter- und verwandte Rubriken.
+ */
+class CategoryPageData
+{
+    /**
+     * @return array<string, mixed>
+     */
+    public function build(WebPortalContext $context, string $slug): array
+    {
+        $portalValues = $context->portalValues;
+        $language = $context->language;
+
+        $category = Category::query()
+            ->whereIn('portal', $portalValues)
+            ->where('is_active', true)
+            ->whereHas('translations', fn (Builder $query) => $query->where('locale', $language)->where('slug', $slug))
+            ->with([
+                'translations' => fn ($query) => $query->where('locale', $language),
+                'parent.translations' => fn ($query) => $query->where('locale', $language),
+            ])
+            ->first();
+
+        if (! $category) {
+            abort(404);
+        }
+
+        $childCategories = Category::query()
+            ->where('parent_id', $category->id)
+            ->where('is_active', true)
+            ->with(['translations' => fn ($query) => $query->where('locale', $language)])
+            ->get();
+
+        $categoryIds = collect([$category->id])->merge($childCategories->pluck('id'))->unique()->values()->all();
+
+        $base = static fn (): Builder => PressRelease::query()
+            ->withoutGlobalScope(PortalScope::class)
+            ->forPortalValues($portalValues)
+            ->forLanguage($language)
+            ->visibleInArchive()
+            ->whereIn('category_id', $categoryIds);
+
+        // Kategoriespezifischer Stichtag: jüngste Meldung dieser Branche.
+        $latest = $base()->max('published_at');
+        $referenceNow = $latest ? Carbon::parse($latest) : now();
+        if ($referenceNow->gt(now())) {
+            $referenceNow = now();
+        }
+        $recentSince = $referenceNow->copy()->subDays(7);
+        $previousSince = $referenceNow->copy()->subDays(14);
+        $monthSince = $referenceNow->copy()->subDays(30);
+
+        $with = [
+            'company',
+            'category.translations' => fn ($query) => $query->where('locale', $language),
+            'images' => fn ($query) => $query->orderByDesc('is_preview')->orderBy('sort_order')->limit(1),
+        ];
+
+        $leadRelease = $base()->with($with)->orderByDesc('published_at')->first();
+
+        $topReleases = $base()
+            ->with($with)
+            ->when($leadRelease, fn (Builder $query) => $query->whereKeyNot($leadRelease->getKey()))
+            ->orderByDesc('published_at')
+            ->limit(2)
+            ->get();
+
+        $excludeIds = collect([$leadRelease?->getKey()])->merge($topReleases->modelKeys())->filter()->all();
+
+        $feedReleases = $base()
+            ->with($with)
+            ->when($excludeIds !== [], fn (Builder $query) => $query->whereNotIn('id', $excludeIds))
+            ->orderByDesc('published_at')
+            ->limit(12)
+            ->get();
+
+        $mostReadReleases = $base()
+            ->orderByDesc('hits')
+            ->orderByDesc('published_at')
+            ->limit(5)
+            ->get(['id', 'slug', 'title', 'hits', 'portal', 'language']);
+
+        $stats = [
+            'today' => $base()->whereDate('published_at', $referenceNow->toDateString())->count(),
+            'week' => $base()->where('published_at', '>=', $recentSince)->count(),
+            'previousWeek' => $base()->where('published_at', '>=', $previousSince)->where('published_at', '<', $recentSince)->count(),
+            'month' => $base()->where('published_at', '>=', $monthSince)->count(),
+            'total' => $base()->count(),
+            'activeCompanies' => $base()->where('published_at', '>=', $recentSince)->distinct()->count('company_id'),
+            'totalCompanies' => $base()->distinct()->count('company_id'),
+        ];
+
+        $newsroomFilter = static function (Builder $query) use ($portalValues, $categoryIds, $language): void {
+            $query
+                ->forPortalValues($portalValues)
+                ->forLanguage($language)
+                ->published()
+                ->whereIn('category_id', $categoryIds);
+        };
+
+        $topNewsrooms = Company::query()
+            ->withoutGlobalScope(PortalScope::class)
+            ->whereIn('portal', $portalValues)
+            ->where('is_active', true)
+            ->whereHas('pressReleases', function (Builder $query) use ($newsroomFilter, $recentSince): void {
+                $newsroomFilter($query);
+                $query->where('published_at', '>=', $recentSince);
+            })
+            ->withCount([
+                'pressReleases as recent_releases_count' => function (Builder $query) use ($newsroomFilter, $recentSince): void {
+                    $newsroomFilter($query);
+                    $query->where('published_at', '>=', $recentSince);
+                },
+                'pressReleases as today_releases_count' => function (Builder $query) use ($newsroomFilter, $referenceNow): void {
+                    $newsroomFilter($query);
+                    $query->whereDate('published_at', $referenceNow->toDateString());
+                },
+            ])
+            ->orderByDesc('recent_releases_count')
+            ->limit(6)
+            ->get()
+            ->map(fn (Company $company): array => [
+                'name' => $company->name,
+                'slug' => $company->slug,
+                'initial' => mb_strtoupper(mb_substr((string) $company->name, 0, 1)),
+                'count' => (int) $company->recent_releases_count,
+                'today' => (int) $company->today_releases_count > 0,
+            ]);
+
+        $publishedCount = static fn (Builder $query) => $query
+            ->forPortalValues($portalValues)
+            ->forLanguage($language)
+            ->published();
+
+        $subCategories = $childCategories
+            ->map(function (Category $child) use ($recentSince, $previousSince, $publishedCount): ?array {
+                $translation = $child->translations->first();
+
+                if (! $translation) {
+                    return null;
+                }
+
+                $total = PressRelease::query()->withoutGlobalScope(PortalScope::class)
+                    ->where('category_id', $child->id)->tap($publishedCount)->count();
+                $recent = PressRelease::query()->withoutGlobalScope(PortalScope::class)
+                    ->where('category_id', $child->id)->tap($publishedCount)->where('published_at', '>=', $recentSince)->count();
+                $previous = PressRelease::query()->withoutGlobalScope(PortalScope::class)
+                    ->where('category_id', $child->id)->tap($publishedCount)
+                    ->where('published_at', '>=', $previousSince)->where('published_at', '<', $recentSince)->count();
+
+                return [
+                    'name' => $translation->name,
+                    'href' => $translation->slug ? route('kategorie', ['slug' => $translation->slug]) : route('web.home'),
+                    'total' => $total,
+                    'recent' => $recent,
+                    'delta' => $recent - $previous,
+                ];
+            })
+            ->filter()
+            ->sortByDesc('total')
+            ->values();
+
+        $relatedCategories = Category::query()
+            ->whereIn('portal', $portalValues)
+            ->where('is_active', true)
+            ->whereNull('parent_id')
+            ->whereKeyNot($category->id)
+            ->when($category->parent_id, fn (Builder $query) => $query->whereKeyNot($category->parent_id))
+            ->with(['translations' => fn ($query) => $query->where('locale', $language)])
+            ->withCount([
+                'pressReleases as total_count' => fn (Builder $query) => $publishedCount($query),
+            ])
+            ->orderByDesc('total_count')
+            ->limit(8)
+            ->get()
+            ->map(function (Category $related): ?array {
+                $translation = $related->translations->first();
+
+                if (! $translation) {
+                    return null;
+                }
+
+                return [
+                    'name' => $translation->name,
+                    'href' => $translation->slug ? route('kategorie', ['slug' => $translation->slug]) : route('web.home'),
+                    'count' => (int) ($related->total_count ?? 0),
+                ];
+            })
+            ->filter()
+            ->values();
+
+        return [
+            'category' => $category,
+            'referenceNow' => $referenceNow,
+            'leadRelease' => $leadRelease,
+            'topReleases' => $topReleases,
+            'feedReleases' => $feedReleases,
+            'mostReadReleases' => $mostReadReleases,
+            'categoryStats' => $stats,
+            'topNewsrooms' => $topNewsrooms,
+            'subCategories' => $subCategories,
+            'relatedCategories' => $relatedCategories,
+        ];
+    }
+}
diff --git a/routes/web.php b/routes/web.php
index 471fe584..64bd8465 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -2,6 +2,7 @@
 
 use App\Enums\Portal;
 use App\Http\Controllers\PressReleasePreviewController;
+use App\Http\Controllers\Web\CategoryController;
 use App\Http\Controllers\Web\NewsroomDetailController;
 use App\Http\Controllers\Web\NewsroomsController;
 use App\Http\Controllers\Web\PreiseController;
@@ -253,204 +254,6 @@ $webHomeData = static function (Portal $primaryPortal, string $language = 'de'):
     ];
 };
 
-// Kategorie-/Branchenseite je Ausgabe.
-$categoryPage = static function (string $edition, string $slug) {
-    $context = WebPortalContext::fromRequest();
-    $language = $context->language;
-    $portalValues = $context->portalValues;
-
-    $category = Category::query()
-        ->whereIn('portal', $portalValues)
-        ->where('is_active', true)
-        ->whereHas('translations', fn (Builder $query) => $query->where('locale', $language)->where('slug', $slug))
-        ->with([
-            'translations' => fn ($query) => $query->where('locale', $language),
-            'parent.translations' => fn ($query) => $query->where('locale', $language),
-        ])
-        ->first();
-
-    if (! $category) {
-        abort(404);
-    }
-
-    $childCategories = Category::query()
-        ->where('parent_id', $category->id)
-        ->where('is_active', true)
-        ->with(['translations' => fn ($query) => $query->where('locale', $language)])
-        ->get();
-
-    $categoryIds = collect([$category->id])->merge($childCategories->pluck('id'))->unique()->values()->all();
-
-    $base = static fn (): Builder => PressRelease::query()
-        ->withoutGlobalScope(PortalScope::class)
-        ->forPortalValues($portalValues)
-        ->forLanguage($language)
-        ->visibleInArchive()
-        ->whereIn('category_id', $categoryIds);
-
-    // Kategoriespezifischer Stichtag: jüngste Meldung dieser Branche.
-    $latest = $base()->max('published_at');
-    $referenceNow = $latest ? Carbon::parse($latest) : now();
-    if ($referenceNow->gt(now())) {
-        $referenceNow = now();
-    }
-    $recentSince = $referenceNow->copy()->subDays(7);
-    $previousSince = $referenceNow->copy()->subDays(14);
-    $monthSince = $referenceNow->copy()->subDays(30);
-
-    $with = [
-        'company',
-        'category.translations' => fn ($query) => $query->where('locale', $language),
-        'images' => fn ($query) => $query->orderByDesc('is_preview')->orderBy('sort_order')->limit(1),
-    ];
-
-    $leadRelease = $base()->with($with)->orderByDesc('published_at')->first();
-
-    $topReleases = $base()
-        ->with($with)
-        ->when($leadRelease, fn (Builder $query) => $query->whereKeyNot($leadRelease->getKey()))
-        ->orderByDesc('published_at')
-        ->limit(2)
-        ->get();
-
-    $excludeIds = collect([$leadRelease?->getKey()])->merge($topReleases->modelKeys())->filter()->all();
-
-    $feedReleases = $base()
-        ->with($with)
-        ->when($excludeIds !== [], fn (Builder $query) => $query->whereNotIn('id', $excludeIds))
-        ->orderByDesc('published_at')
-        ->limit(12)
-        ->get();
-
-    $mostReadReleases = $base()
-        ->orderByDesc('hits')
-        ->orderByDesc('published_at')
-        ->limit(5)
-        ->get(['id', 'slug', 'title', 'hits', 'portal', 'language']);
-
-    $stats = [
-        'today' => $base()->whereDate('published_at', $referenceNow->toDateString())->count(),
-        'week' => $base()->where('published_at', '>=', $recentSince)->count(),
-        'previousWeek' => $base()->where('published_at', '>=', $previousSince)->where('published_at', '<', $recentSince)->count(),
-        'month' => $base()->where('published_at', '>=', $monthSince)->count(),
-        'total' => $base()->count(),
-        'activeCompanies' => $base()->where('published_at', '>=', $recentSince)->distinct()->count('company_id'),
-        'totalCompanies' => $base()->distinct()->count('company_id'),
-    ];
-
-    $newsroomFilter = static function (Builder $query) use ($portalValues, $categoryIds, $language): void {
-        $query
-            ->forPortalValues($portalValues)
-            ->forLanguage($language)
-            ->published()
-            ->whereIn('category_id', $categoryIds);
-    };
-
-    $topNewsrooms = Company::query()
-        ->withoutGlobalScope(PortalScope::class)
-        ->whereIn('portal', $portalValues)
-        ->where('is_active', true)
-        ->whereHas('pressReleases', function (Builder $query) use ($newsroomFilter, $recentSince): void {
-            $newsroomFilter($query);
-            $query->where('published_at', '>=', $recentSince);
-        })
-        ->withCount([
-            'pressReleases as recent_releases_count' => function (Builder $query) use ($newsroomFilter, $recentSince): void {
-                $newsroomFilter($query);
-                $query->where('published_at', '>=', $recentSince);
-            },
-            'pressReleases as today_releases_count' => function (Builder $query) use ($newsroomFilter, $referenceNow): void {
-                $newsroomFilter($query);
-                $query->whereDate('published_at', $referenceNow->toDateString());
-            },
-        ])
-        ->orderByDesc('recent_releases_count')
-        ->limit(6)
-        ->get()
-        ->map(fn (Company $company): array => [
-            'name' => $company->name,
-            'slug' => $company->slug,
-            'initial' => mb_strtoupper(mb_substr((string) $company->name, 0, 1)),
-            'count' => (int) $company->recent_releases_count,
-            'today' => (int) $company->today_releases_count > 0,
-        ]);
-
-    $publishedCount = static fn (Builder $query) => $query
-        ->forPortalValues($portalValues)
-        ->forLanguage($language)
-        ->published();
-
-    $subCategories = $childCategories
-        ->map(function (Category $child) use ($recentSince, $previousSince, $publishedCount): ?array {
-            $translation = $child->translations->first();
-
-            if (! $translation) {
-                return null;
-            }
-
-            $total = PressRelease::query()->withoutGlobalScope(PortalScope::class)
-                ->where('category_id', $child->id)->tap($publishedCount)->count();
-            $recent = PressRelease::query()->withoutGlobalScope(PortalScope::class)
-                ->where('category_id', $child->id)->tap($publishedCount)->where('published_at', '>=', $recentSince)->count();
-            $previous = PressRelease::query()->withoutGlobalScope(PortalScope::class)
-                ->where('category_id', $child->id)->tap($publishedCount)
-                ->where('published_at', '>=', $previousSince)->where('published_at', '<', $recentSince)->count();
-
-            return [
-                'name' => $translation->name,
-                'href' => $translation->slug ? route('kategorie', ['slug' => $translation->slug]) : route('web.home'),
-                'total' => $total,
-                'recent' => $recent,
-                'delta' => $recent - $previous,
-            ];
-        })
-        ->filter()
-        ->sortByDesc('total')
-        ->values();
-
-    $relatedCategories = Category::query()
-        ->whereIn('portal', $portalValues)
-        ->where('is_active', true)
-        ->whereNull('parent_id')
-        ->whereKeyNot($category->id)
-        ->when($category->parent_id, fn (Builder $query) => $query->whereKeyNot($category->parent_id))
-        ->with(['translations' => fn ($query) => $query->where('locale', $language)])
-        ->withCount([
-            'pressReleases as total_count' => fn (Builder $query) => $publishedCount($query),
-        ])
-        ->orderByDesc('total_count')
-        ->limit(8)
-        ->get()
-        ->map(function (Category $related): ?array {
-            $translation = $related->translations->first();
-
-            if (! $translation) {
-                return null;
-            }
-
-            return [
-                'name' => $translation->name,
-                'href' => $translation->slug ? route('kategorie', ['slug' => $translation->slug]) : route('web.home'),
-                'count' => (int) ($related->total_count ?? 0),
-            ];
-        })
-        ->filter()
-        ->values();
-
-    return view('web.kategorie', [
-        'category' => $category,
-        'referenceNow' => $referenceNow,
-        'leadRelease' => $leadRelease,
-        'topReleases' => $topReleases,
-        'feedReleases' => $feedReleases,
-        'mostReadReleases' => $mostReadReleases,
-        'categoryStats' => $stats,
-        'topNewsrooms' => $topNewsrooms,
-        'subCategories' => $subCategories,
-        'relatedCategories' => $relatedCategories,
-    ]);
-};
-
 // Detailseite einer Pressemitteilung je Ausgabe.
 $releaseDetailPage = static function (string $edition, string $slug) {
     $context = WebPortalContext::fromRequest();
@@ -664,7 +467,7 @@ Route::get('{path}', function (string $path) use ($htmlRedirect) {
 // ---------------------------------------------------------------------------
 // Öffentliche Inhalte je Ausgabe (Sprache): /de/... und /en/...
 // ---------------------------------------------------------------------------
-Route::prefix('{edition}')->whereIn('edition', SetEdition::EDITIONS)->group(function () use ($applyWebDomainConfig, $webHomeData, $categoryPage, $releaseDetailPage) {
+Route::prefix('{edition}')->whereIn('edition', SetEdition::EDITIONS)->group(function () use ($applyWebDomainConfig, $webHomeData, $releaseDetailPage) {
     // Startseite je Ausgabe
     Route::get('/', function (string $edition) use ($applyWebDomainConfig, $webHomeData) {
         $domain = request()->getHost();
@@ -684,7 +487,7 @@ Route::prefix('{edition}')->whereIn('edition', SetEdition::EDITIONS)->group(func
     })->name('web.home');
 
     // Kategorie / Branchenseite (z.B. /de/category/energie-klima)
-    Route::get('category/{slug}', $categoryPage)->name('kategorie');
+    Route::get('category/{slug}', CategoryController::class)->name('kategorie');
 
     // Detailseite einer Pressemitteilung (z.B. /de/press-release/ki-revolution)
     Route::get('press-release/{slug}', $releaseDetailPage)->name('release.detail');