diff --git a/app/Filament/Pages/BaselineCompareLanding.php b/app/Filament/Pages/BaselineCompareLanding.php
index 8d2949f..7bde82e 100644
--- a/app/Filament/Pages/BaselineCompareLanding.php
+++ b/app/Filament/Pages/BaselineCompareLanding.php
@@ -14,6 +14,9 @@
 use App\Services\Baselines\BaselineCompareService;
 use App\Support\Auth\Capabilities;
 use App\Support\OperationRunLinks;
+use App\Support\Ui\ActionSurface\ActionSurfaceDeclaration;
+use App\Support\Ui\ActionSurface\Enums\ActionSurfaceProfile;
+use App\Support\Ui\ActionSurface\Enums\ActionSurfaceSlot;
 use BackedEnum;
 use Filament\Actions\Action;
 use Filament\Notifications\Notification;
@@ -171,6 +174,17 @@ public function mount(): void
         $this->message = 'Baseline profile is assigned and has a snapshot. Run "Compare Now" to check for drift.';
     }
 
+    public static function actionSurfaceDeclaration(): ActionSurfaceDeclaration
+    {
+        return ActionSurfaceDeclaration::forPage(ActionSurfaceProfile::ListOnlyReadOnly)
+            ->satisfy(ActionSurfaceSlot::ListHeader, 'Header action: Compare Now (confirmation modal, capability-gated).')
+            ->exempt(ActionSurfaceSlot::InspectAffordance, 'This is a tenant-scoped landing page, not a record inspect surface.')
+            ->exempt(ActionSurfaceSlot::ListRowMoreMenu, 'This page does not render table rows with secondary actions.')
+            ->exempt(ActionSurfaceSlot::ListBulkMoreGroup, 'This page has no bulk actions.')
+            ->satisfy(ActionSurfaceSlot::ListEmptyState, 'Page renders explicit empty states for missing tenant, missing assignment, and missing snapshot, with guidance messaging.')
+            ->exempt(ActionSurfaceSlot::DetailHeader, 'This page does not have a record detail header; it uses a page header action instead.');
+    }
+
     /**
      * @return array<Action>
      */