diff --git a/public/css/admin-components.css b/public/css/admin-components.css
index 2e8fc17..ef0c0cf 100644
--- a/public/css/admin-components.css
+++ b/public/css/admin-components.css
@@ -54,8 +54,14 @@
 }
 
 /* 平台订单：工具区（两列分组卡片化，避免表单散落） */
-.tool-grid{align-items:start;}
-.tool-group{width:100%;}
+.tool-grid{
+    align-items:start;
+}
+
+.tool-group{
+    width:100%;
+}
+
 .tool-group-title{
     font-size:12px;
     color:#94a3b8;
@@ -64,7 +70,10 @@
     font-weight:700;
     margin:0 0 10px;
 }
-.tool-group-subtitle{margin:0 0 6px;}
+
+.tool-group-subtitle{
+    margin:0 0 6px;
+}
 
 /* 平台订单列表：避免列太多导致内容挤压成“竖排/断字” */
 .table-wrap{
diff --git a/tests/Feature/AdminComponentsCssToolGroupFormattingTest.php b/tests/Feature/AdminComponentsCssToolGroupFormattingTest.php
new file mode 100644
index 0000000..2abd49f
--- /dev/null
+++ b/tests/Feature/AdminComponentsCssToolGroupFormattingTest.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminComponentsCssToolGroupFormattingTest 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_components_css_contains_tool_group_blocks_with_braced_formatting(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $css = file_get_contents(public_path('css/admin-components.css'));
+        $this->assertIsString($css);
+
+        // 只做轻量“存在性/格式”断言：避免回到单行写法（不利于长期维护）
+        $this->assertStringContainsString(".tool-grid{\n", $css);
+        $this->assertStringContainsString(".tool-group{\n", $css);
+        $this->assertStringContainsString(".tool-group-subtitle{\n", $css);
+    }
+}