diff --git a/resources/views/admin/plans/index.blade.php b/resources/views/admin/plans/index.blade.php
index c275658..f9df4b9 100644
--- a/resources/views/admin/plans/index.blade.php
+++ b/resources/views/admin/plans/index.blade.php
@@ -97,15 +97,15 @@
     </div>
 </div>
 
-<details class="card mb-20 collapsible" data-role="collapsible" data-storage-key="admin.plans.filters" open>
-    <summary class="collapsible-summary">
+<details class="card mb-20 collapsible filters-card" data-role="collapsible" data-storage-key="admin.plans.filters" open>
+    <summary class="collapsible-summary filters-summary">
         <div class="flex-between items-center">
             <h3 class="mb-0">筛选条件</h3>
             <span class="muted muted-xs">点击收起/展开</span>
         </div>
     </summary>
-    <div class="collapsible-body">
-        <form method="get" action="/admin/plans" class="grid-3">
+    <div class="collapsible-body filters-body">
+        <form method="get" action="/admin/plans" class="grid-3 filters-grid">
 
         @if($safeBackForLinks !== '')
             <input type="hidden" name="back" value="{!! $safeBackForLinks !!}">
diff --git a/tests/Feature/AdminPlansIndexShouldUseFiltersCardClassesTest.php b/tests/Feature/AdminPlansIndexShouldUseFiltersCardClassesTest.php
new file mode 100644
index 0000000..bfcbe6d
--- /dev/null
+++ b/tests/Feature/AdminPlansIndexShouldUseFiltersCardClassesTest.php
@@ -0,0 +1,35 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminPlansIndexShouldUseFiltersCardClassesTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function loginAsPlatformAdmin(): void
+    {
+        $this->seed();
+
+        $this->post('/admin/login', [
+            'email' => 'platform.admin@demo.local',
+            'password' => 'Platform@123456',
+        ])->assertRedirect('/admin');
+    }
+
+    public function test_admin_plans_index_should_use_filters_card_classes(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $response = $this->get('/admin/plans');
+        $response->assertOk();
+
+        // 护栏：套餐管理筛选区应复用统一 Filters Card 组件类（与平台订单/订阅列表一致）。
+        $response->assertSee('filters-card', false);
+        $response->assertSee('filters-summary', false);
+        $response->assertSee('filters-body', false);
+        $response->assertSee('filters-grid', false);
+    }
+}