diff --git a/backend/app/services/fetcher_service.py b/backend/app/services/fetcher_service.py
index 4cc71cc..271b579 100644
--- a/backend/app/services/fetcher_service.py
+++ b/backend/app/services/fetcher_service.py
@@ -28,7 +28,7 @@ EMBEDDING_MODEL_PATH = os.getenv("EMBEDDING_MODEL_PATH", "")
 
 print("正在加载 BAAI/bge-m3 向量模型...")
 # 全局单例
-embedder_model = SentenceTransformer(EMBEDDING_MODEL_PATH, local_files_only=True, device="cuda")
+embedder_model = SentenceTransformer(EMBEDDING_MODEL_PATH, local_files_only=True)
 print("模型加载完成。")
 
 
diff --git a/frontend/env.d.ts b/frontend/env.d.ts
index 11f02fe..c1e8614 100644
--- a/frontend/env.d.ts
+++ b/frontend/env.d.ts
@@ -1 +1,10 @@
 /// <reference types="vite/client" />
+/// <reference types="vite/client" />
+
+interface ImportMetaEnv {
+  readonly VITE_BACKEND_ORIGIN: string
+}
+
+interface ImportMeta {
+  readonly env: ImportMetaEnv
+}
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index b36115a..219a35c 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -69,7 +69,6 @@
       "integrity": "sha512-CGOfOJqWjg2qW/Mb6zNsDm+u5vFQ8DxXfbM09z69p5Z6+mE1ikP2jUXw+j42Pf1XTYED2Rni5f95npYeuwMDQA==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@babel/code-frame": "^7.29.0",
         "@babel/generator": "^7.29.0",
@@ -1915,7 +1914,6 @@
       "integrity": "sha512-GYDxsZi3ChgmckRT9HPU0WEhKLP08ev/Yfcq2AstjrDASOYCSXeyjDsHg4v5t4jOj7cyDX3vmprafKlWIG9MXQ==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "undici-types": "~7.16.0"
       }
@@ -1965,7 +1963,6 @@
       "integrity": "sha512-klQbnPAAiGYFyI02+znpBRLyjL4/BrBd0nyWkdC0s/6xFLkXYQ8OoRrSkqacS1ddVxf/LDyODIKbQ5TgKAf/Fg==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@typescript-eslint/scope-manager": "8.56.1",
         "@typescript-eslint/types": "8.56.1",
@@ -2549,7 +2546,6 @@
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.16.0.tgz",
       "integrity": "sha512-UVJyE9MttOsBQIDKw1skb9nAwQuR5wuGD3+82K6JgJlm/Y+KI92oNsMNGZCYdDsVtRHSak0pcV5Dno5+4jh9sw==",
       "license": "MIT",
-      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -2619,7 +2615,6 @@
       "resolved": "https://registry.npmjs.org/apexcharts/-/apexcharts-5.10.3.tgz",
       "integrity": "sha512-wwvkSLsodNOc/rHo5MJsn3GPM4Krc5Gs0zKX4Lfzq4LohcTbyKylYUGEqJFmXXxGR7yLbZQz31sB5RTqT5mv1g==",
       "license": "SEE LICENSE IN LICENSE",
-      "peer": true,
       "dependencies": {
         "@yr/monotone-cubic-spline": "^1.0.3"
       }
@@ -2741,7 +2736,6 @@
         }
       ],
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "baseline-browser-mapping": "^2.9.0",
         "caniuse-lite": "^1.0.30001759",
@@ -3048,7 +3042,6 @@
       "integrity": "sha512-COV33RzXZkqhG9P2rZCFl9ZmJ7WL+gQSCRzE7RhkbclbQPtLAWReL7ysA0Sh4c8Im2U9ynybdR56PV0XcKvqaQ==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.8.0",
         "@eslint-community/regexpp": "^4.12.2",
@@ -3131,7 +3124,6 @@
       "integrity": "sha512-f1J/tcbnrpgC8suPN5AtdJ5MQjuXbSU9pGRSSYAuF3SHoiYCOdEX6O22pLaRyLHXvDcOe+O5ENgc1owQ587agA==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.4.0",
         "natural-compare": "^1.4.0",
@@ -3590,7 +3582,6 @@
       "integrity": "sha512-ekilCSN1jwRvIbgeg/57YFh8qQDNbwDb9xT/qu2DAHbFFZUicIl4ygVaAvzveMhMVr3LnpSKTNnwt8PoOfmKhQ==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "bin": {
         "jiti": "lib/jiti-cli.mjs"
       }
@@ -4187,7 +4178,6 @@
       "resolved": "https://registry.npmjs.org/pinia/-/pinia-3.0.4.tgz",
       "integrity": "sha512-l7pqLUFTI/+ESXn6k3nu30ZIzW5E2WZF/LaHJEpoq6ElcLD+wduZoB2kBN19du6K/4FDpPMazY2wJr+IndBtQw==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@vue/devtools-api": "^7.7.7"
       },
@@ -4594,7 +4584,6 @@
       "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
       "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=12"
       },
@@ -4657,7 +4646,6 @@
       "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
       "devOptional": true,
       "license": "Apache-2.0",
-      "peer": true,
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
@@ -4811,7 +4799,6 @@
       "integrity": "sha512-w+N7Hifpc3gRjZ63vYBXA56dvvRlNWRczTdmCBBa+CotUzAPf5b7YMdMR/8CQoeYE5LX3W4wj6RYTgonm1b9DA==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "esbuild": "^0.27.0",
         "fdir": "^6.5.0",
@@ -5043,7 +5030,6 @@
       "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=12"
       },
@@ -5063,7 +5049,6 @@
       "resolved": "https://registry.npmjs.org/vue/-/vue-3.5.29.tgz",
       "integrity": "sha512-BZqN4Ze6mDQVNAni0IHeMJ5mwr8VAJ3MQC9FmprRhcBYENw+wOAAjRj8jfmN6FLl0j96OXbR+CjWhmAmM+QGnA==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@vue/compiler-dom": "3.5.29",
         "@vue/compiler-sfc": "3.5.29",
diff --git a/frontend/src/config/apiBase.ts b/frontend/src/config/apiBase.ts
index 6833e0b..6459e6b 100644
--- a/frontend/src/config/apiBase.ts
+++ b/frontend/src/config/apiBase.ts
@@ -2,10 +2,12 @@
  * API 基础配置：自动探测内网/公网后端，失败时回退公网
  */
 const API_PREFIX = '/api/v1'
-const LAN_BACKEND_ORIGIN = 'http://10.252.130.135:8000'
-const PUBLIC_BACKEND_ORIGIN = 'http://47.107.130.88:51290'
+const LAN_BACKEND_ORIGIN = import.meta.env.VITE_BACKEND_ORIGIN
+const PUBLIC_BACKEND_ORIGIN = import.meta.env.VITE_BACKEND_ORIGIN
 const PROBE_TIMEOUT_MS = 1200
 
+console.log(LAN_BACKEND_ORIGIN);
+
 const LAN_API_BASE_URL = `${LAN_BACKEND_ORIGIN}${API_PREFIX}`
 const PUBLIC_API_BASE_URL = `${PUBLIC_BACKEND_ORIGIN}${API_PREFIX}`
 const ENV_API_BASE_URL = import.meta.env.VITE_API_BASE_URL as string | undefined
diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index 313158b..6d1a94a 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -16,7 +16,7 @@ export default defineConfig({
     strictPort: true,
     proxy: {
       '/api': {
-        target: 'http://10.252.130.135:8000',
+        target: 'http://localhost:8000',
         changeOrigin: true,
       },
     },