chore(css): 治理提示块脚注样式组件化 + 护栏

public/css/admin-components.css

@@ -45,3 +45,10 @@
     font-size:12px;
     line-height:1.5;
 }
+
+/* 可复用：治理提示块内的说明/脚注文本 */
+.governance-block-footnote{
+    margin-top:6px;
+    font-size:12px;
+    line-height:1.5;
+}

resources/views/admin/platform_orders/index.blade.php

@@ -358,8 +358,8 @@
                 <li>最后处理 <a class="link" href="{{ request()->fullUrlWithQuery(['syncable_only' => '1', 'page' => null]) }}">可同步</a>：确认无对账/退款异常、无同步失败原因后，再批量同步订阅。</li>
             </ol>
         </div>
-        <div class="muted muted-xs mt-6">说明：本页“批量同步/批量生效/清理失败标记”等工具动作会透传当前筛选条件；建议先缩小到明确集合再操作。</div>
-        <div class="muted muted-xs mt-6">提示：如果你是从其它页面（例如订阅详情/套餐页）通过 back 进入本页，建议优先用上方「← 返回上一页（保留上下文）」回到来源页，再继续操作。</div>
+        <div class="muted governance-block-footnote">说明：本页“批量同步/批量生效/清理失败标记”等工具动作会透传当前筛选条件；建议先缩小到明确集合再操作。</div>
+        <div class="muted governance-block-footnote">提示：如果你是从其它页面（例如订阅详情/套餐页）通过 back 进入本页，建议优先用上方「← 返回上一页（保留上下文）」回到来源页，再继续操作。</div>
     </div>
 
     <div class="card">

tests/Feature/AdminGovernanceBlockFootnoteUsesCssComponentTest.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminGovernanceBlockFootnoteUsesCssComponentTest 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_platform_order_index_sop_footnote_should_use_governance_block_footnote_class(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $res = $this->get('/admin/platform-orders');
+        $res->assertOk();
+
+        // SOP 卡的两条说明应使用治理提示块的脚注样式类，避免 inline/散落工具类扩散
+        $res->assertSee('governance-block-footnote', false);
+    }
+}