diff --git a/backend/src/config/config.default.ts b/backend/src/config/config.default.ts
index b38fdbf..458c044 100644
--- a/backend/src/config/config.default.ts
+++ b/backend/src/config/config.default.ts
@@ -14,6 +14,11 @@ export default {
   koa: {
     port: availablePort(9000),
   },
+  cors: {
+    origin: '*',
+    allowMethods: 'GET,HEAD,PUT,POST,DELETE,PATCH,OPTIONS',
+    allowHeaders: ['Content-Type', 'Authorization', 'x-tenant-id', 'x-requested-with'],
+  },
   // 开启异步上下文管理
   asyncContextManager: {
     enable: true,
diff --git a/backend/src/configuration.ts b/backend/src/configuration.ts
index ca2a37f..6d6de98 100644
--- a/backend/src/configuration.ts
+++ b/backend/src/configuration.ts
@@ -8,7 +8,7 @@ import {
   MidwayWebRouterService,
 } from '@midwayjs/core';
 import * as koa from '@midwayjs/koa';
-// import * as crossDomain from '@midwayjs/cross-domain';
+import * as crossDomain from '@midwayjs/cross-domain';
 import * as validate from '@midwayjs/validate';
 import * as info from '@midwayjs/info';
 import * as staticFile from '@midwayjs/static-file';
@@ -27,7 +27,7 @@ import { TenantMiddleware } from './comm/middleware/tenant';
     // https://koajs.com/
     koa,
     // 是否开启跨域(注：顺序不能乱放！！！) http://www.midwayjs.org/docs/extensions/cross_domain
-    // crossDomain,
+    crossDomain,
     // 静态文件托管 https://midwayjs.org/docs/extensions/static_file
     staticFile,
     // orm https://midwayjs.org/docs/extensions/orm
diff --git a/backend/src/modules/card/service/portal.ts b/backend/src/modules/card/service/portal.ts
index 279501d..0b1bb6d 100644
--- a/backend/src/modules/card/service/portal.ts
+++ b/backend/src/modules/card/service/portal.ts
@@ -88,6 +88,12 @@ export class CardPortalService extends BaseService {
       card = await this.cardInfoEntity.findOne({
         where: { slug: queryKey },
       });
+      if (!card && queryKey.toLowerCase() === 'default') {
+        card = await this.cardInfoEntity.findOne({
+          where: { status: 'published' },
+          order: { id: 'ASC' },
+        });
+      }
     }
 
     // 3. 实体存在性与发布状态检查
diff --git a/backend/test/modules/card/portal-default-fallback.test.ts b/backend/test/modules/card/portal-default-fallback.test.ts
new file mode 100644
index 0000000..88aedad
--- /dev/null
+++ b/backend/test/modules/card/portal-default-fallback.test.ts
@@ -0,0 +1,67 @@
+import { CardPortalService } from '../../../src/modules/card/service/portal';
+import { CardInfoEntity } from '../../../src/modules/card/entity/info';
+import { CardBentoEntity } from '../../../src/modules/card/entity/bento';
+
+describe('CardPortalService: default 标识平滑降级与微官网访问容错 (TDD Red -> Green)', () => {
+  let cardPortalService: CardPortalService;
+
+  const mockCardData: CardInfoEntity[] = [
+    {
+      id: 1,
+      slug: 'alex-morgan',
+      name: 'Alex Morgan',
+      title: 'VP of Global Business',
+      company: 'OmniCard AI Global Inc.',
+      status: 'published',
+      createTime: new Date(),
+      updateTime: new Date(),
+    } as CardInfoEntity,
+  ];
+
+  beforeEach(() => {
+    cardPortalService = new CardPortalService();
+    (CardPortalService as any).localCache?.clear?.();
+
+    const mockCardRepo = {
+      findOne: jest.fn(async (options: any) => {
+        const where = options?.where;
+        // 如果是按默认/第一张已发布排序查询
+        if (options?.order?.id === 'ASC' && where?.status === 'published') {
+          return mockCardData.find((c) => c.status === 'published') || null;
+        }
+        if (Array.isArray(where)) {
+          return mockCardData.find((c) => c.id === where[0]?.id || c.slug === where[1]?.slug) || null;
+        }
+        if (where?.slug) {
+          return mockCardData.find((c) => c.slug === where.slug) || null;
+        }
+        if (where?.id) {
+          return mockCardData.find((c) => c.id === where.id) || null;
+        }
+        return null;
+      }),
+    };
+
+    const mockBentoRepo = {
+      find: jest.fn(async () => []),
+    };
+
+    cardPortalService.cardInfoEntity = mockCardRepo as any;
+    cardPortalService.cardBentoEntity = mockBentoRepo as any;
+  });
+
+  it('1. 当请求 slug 为 default 且无 default 名片时，应自动平滑降级获取首张已发布名片', async () => {
+    const res = await cardPortalService.getPortalDetail('default');
+    expect(res).toBeDefined();
+    expect(res.name).toBe('Alex Morgan');
+    expect(res.slug).toBe('alex-morgan');
+    expect(res.status).toBe('published');
+  });
+
+  it('2. 当请求明确的 slug 时，应正常返回指定名片', async () => {
+    const res = await cardPortalService.getPortalDetail('alex-morgan');
+    expect(res).toBeDefined();
+    expect(res.name).toBe('Alex Morgan');
+    expect(res.slug).toBe('alex-morgan');
+  });
+});
diff --git a/mpuniapp/common/request.uts b/mpuniapp/common/request.uts
index dfed1e7..fa88228 100644
--- a/mpuniapp/common/request.uts
+++ b/mpuniapp/common/request.uts
@@ -5,9 +5,13 @@
 
 import { ApiResponse } from './types.uts';
 
-let currentBaseUrl: string = 'http://127.0.0.1:9000/api';
+let currentBaseUrl: string = 'http://127.0.0.1:9000';
 // #ifdef H5
-currentBaseUrl = '/api';
+if (typeof window !== 'undefined' && window.location != null) {
+  const protocol = window.location.protocol != null && window.location.protocol !== '' ? window.location.protocol : 'http:';
+  const hostname = window.location.hostname != null && window.location.hostname !== '' ? window.location.hostname : '127.0.0.1';
+  currentBaseUrl = `${protocol}//${hostname}:9000`;
+}
 // #endif
 
 let currentTimeout: number = 10000;
diff --git a/mpuniapp/index.html b/mpuniapp/index.html
index c23172d..7e21498 100644
--- a/mpuniapp/index.html
+++ b/mpuniapp/index.html
@@ -10,7 +10,31 @@
         '<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0' +
         (coverSupport ? ', viewport-fit=cover' : '') + '" />')
     </script>
-    <title></title>
+    <title>OmniCard</title>
+    <script>
+      (function() {
+        var origError = console.error;
+        console.error = function() {
+          for (var i = 0; i < arguments.length; i++) {
+            var arg = arguments[i];
+            if (typeof arg === 'string' && (arg.indexOf('GtPush') !== -1 || arg.indexOf('register fail') !== -1)) {
+              return;
+            }
+          }
+          origError.apply(console, arguments);
+        };
+        var origWarn = console.warn;
+        console.warn = function() {
+          for (var i = 0; i < arguments.length; i++) {
+            var arg = arguments[i];
+            if (typeof arg === 'string' && (arg.indexOf('GtPush') !== -1 || arg.indexOf('already connected') !== -1)) {
+              return;
+            }
+          }
+          origWarn.apply(console, arguments);
+        };
+      })();
+    </script>
     <!--preload-links-->
     <!--app-context-->
   </head>
diff --git a/mpuniapp/manifest.json b/mpuniapp/manifest.json
index 41cf876..350d1cd 100644
--- a/mpuniapp/manifest.json
+++ b/mpuniapp/manifest.json
@@ -9,7 +9,6 @@
         "styleIsolationVersion" : "2"
     },
     "vueVersion" : "3",
-    "workers" : "workers",
     "mp-weixin" : {
         "darkmode" : true,
         "appid" : "",
@@ -97,7 +96,7 @@
             }
         },
         "unipush" : {
-            "enable" : true
+            "enable" : false
         }
     },
     "app-android" : {