fix(admin-ui): prevent orders dashboard dark background regression

public/css/admin-base.css

@@ -333,8 +333,18 @@ input.w-90{width:90px;}
 .pagination-wrap a:focus,
 .pagination-wrap a:active{text-decoration:none;}
 .text-center,.table-empty{text-align:center;}
-.section-dark{background:#0f172a;}
-.stat-box-light,.status-link-light{padding:12px;border:1px solid #e5e7eb;border-radius:8px;}
+.section-dark{
+    /* 说明：早期是深色块，但与当前 Ant Design Pro-ish 浅色主题不一致，且容易造成文字对比度问题。
+     * 统一收敛：用 surface tint 作为“弱强调区块”，避免“颜色回退”。
+     */
+    background:var(--adm-surface-tint, rgba(15, 23, 42, .02));
+}
+.stat-box-light,.status-link-light{
+    padding:12px;
+    border:1px solid var(--adm-border-color, #e5e7eb);
+    border-radius:8px;
+    background:var(--adm-bg-container, #ffffff);
+}
 .status-link-light{color:inherit;text-decoration:none;display:block;}
 .is-active-dark,.status-card-active{background:#1e293b;border-color:#60a5fa;}
 .is-active-light{background:#f5faff;border-color:#93c5fd;}

public/css/admin-components.css

@@ -318,7 +318,7 @@
     padding:10px 10px;
     border:1px solid var(--adm-border-color, #e5e7eb);
     border-radius:var(--adm-radius, 12px);
-    background:var(--adm-surface-tint, rgba(15, 23, 42, .02));
+    background:var(--adm-surface-tint);
     box-shadow:var(--adm-shadow-sm);
 }
 

tests/Feature/AdminComponentsCssShouldUseTokenOnlyForShadowAndSurfaceTintTest.php

@@ -30,5 +30,7 @@ class AdminComponentsCssShouldUseTokenOnlyForShadowAndSurfaceTintTest extends Te
         $this->assertStringNotContainsString('var(--adm-shadow-popover,', $css);
         $this->assertStringNotContainsString('var(--adm-shadow-sm,', $css);
         $this->assertStringNotContainsString('var(--adm-surface-tint,', $css);
+
+        // 说明：surface tint fallback 的检测放在 admin-base.css（基础样式层）里，components 层仍坚持 token-only。
     }
 }

tests/Feature/AdminOrdersIndexSectionDarkShouldUseSurfaceTintTest.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminOrdersIndexSectionDarkShouldUseSurfaceTintTest 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_orders_index_should_not_use_hardcoded_dark_section_background(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $res = $this->get('/admin/orders');
+        $res->assertOk();
+
+        // 页面仍然可以使用 section-dark 作为“强调区块”类名，但样式不应回到深色背景
+        $res->assertSee('section-dark', false);
+
+        $css = (string) file_get_contents(public_path('css/admin-base.css'));
+
+        // 旧版硬编码深色背景：background:#0f172a
+        $this->assertStringNotContainsString('background:#0f172a', $css);
+        $this->assertStringContainsString('--adm-surface-tint', $css);
+    }
+}