diff --git a/deploy/nginx_172.31.170.47.conf b/deploy/nginx_172.31.170.47.conf
index f35539cd..091caba3 100644
--- a/deploy/nginx_172.31.170.47.conf
+++ b/deploy/nginx_172.31.170.47.conf
@@ -50,9 +50,18 @@ server {
         proxy_set_header Host $host;
     }
 
-    # ── Legacy install.php redirect ──
-    location = /install.php {
-        return 301 /app/install.html;
+    # ── install.php (PHP-FPM for installer, root = /web/) ──
+    location ~ ^/install\.php$ {
+        root /www/wwwroot/api.synaglobal.vip/web;
+        fastcgi_pass unix:/tmp/php-cgi-82.sock;
+        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+        include fastcgi_params;
+    }
+
+    # ── Installer assets (CSS/JS in /web/) ──
+    location ~ ^/(css|js|vendor)/ {
+        root /www/wwwroot/api.synaglobal.vip/web;
+        try_files $uri =404;
     }
 
     # ── Static assets ──
@@ -70,9 +79,9 @@ server {
         deny all;
     }
 
-    # ── SPA fallback: all paths → index.html ──
+    # ── Static HTML pages (no SPA — each page is standalone) ──
     location / {
-        try_files $uri $uri/ /index.html;
+        try_files $uri $uri/ =404;
     }
 
     # ── Logging ──
diff --git a/deploy/nginx_api.synaglobal.vip.conf b/deploy/nginx_api.synaglobal.vip.conf
new file mode 100644
index 00000000..0a319b75
--- /dev/null
+++ b/deploy/nginx_api.synaglobal.vip.conf
@@ -0,0 +1,111 @@
+# Nexus v6.0 — Nginx Production Config (HTTPS)
+# Domain: api.synaglobal.vip (宝塔面板管理)
+# Backend: uvicorn 0.0.0.0:8600
+# Frontend: /www/wwwroot/api.synaglobal.vip/web/app/ (Tailwind CSS v4 + Alpine.js)
+
+# ── Upstream: Python FastAPI backend ──
+upstream nexus_api {
+    server 127.0.0.1:8600;
+    keepalive 32;
+}
+
+# ── HTTP → HTTPS redirect ──
+server {
+    listen 80;
+    server_name api.synaglobal.vip;
+    return 301 https://$host$request_uri;
+}
+
+# ── HTTPS ──
+server {
+    listen 443 ssl http2;
+    server_name api.synaglobal.vip;
+
+    # SSL (宝塔面板自动管理证书)
+    ssl_certificate /www/server/panel/vhost/cert/api.synaglobal.vip/fullchain.pem;
+    ssl_certificate_key /www/server/panel/vhost/cert/api.synaglobal.vip/privkey.pem;
+    ssl_protocols TLSv1.2 TLSv1.3;
+    ssl_ciphers HIGH:!aNULL:!MD5;
+    ssl_prefer_server_ciphers on;
+    ssl_session_cache shared:SSL:10m;
+    ssl_session_timeout 10m;
+
+    # HSTS
+    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
+
+    # Document root = new Tailwind app directory
+    root /www/wwwroot/api.synaglobal.vip/web/app;
+    index index.html;
+
+    # ── install.php (PHP-FPM for installer, root = /web/) ──
+    location ~ ^/install\.php$ {
+        root /www/wwwroot/api.synaglobal.vip/web;
+        fastcgi_pass unix:/tmp/php-cgi-82.sock;
+        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+        include fastcgi_params;
+    }
+
+    # ── Installer assets (CSS/JS in /web/) ──
+    location ~ ^/(css|js|vendor)/ {
+        root /www/wwwroot/api.synaglobal.vip/web;
+        try_files $uri =404;
+    }
+
+    # ── Python API proxy ──
+    location /api/ {
+        proxy_pass http://nexus_api;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_read_timeout 300s;
+        proxy_send_timeout 300s;
+        proxy_connect_timeout 10s;
+    }
+
+    # ── WebSocket proxy (alerts + WebSSH terminal) ──
+    location /ws/ {
+        proxy_pass http://nexus_api;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_read_timeout 3600s;
+        proxy_send_timeout 3600s;
+    }
+
+    # ── Health endpoint ──
+    location /health {
+        proxy_pass http://nexus_api;
+        proxy_set_header Host $host;
+    }
+
+    # ── Static assets (cache aggressively) ──
+    location ~* \.(css|js|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
+        expires 7d;
+        add_header Cache-Control "public, immutable";
+        try_files $uri =404;
+    }
+
+    # ── Deny sensitive files ──
+    location ~ /\. {
+        deny all;
+    }
+    location ~ /data/config\.php$ {
+        deny all;
+    }
+
+    # ── Static HTML pages (no SPA — each page is standalone) ──
+    location / {
+        try_files $uri $uri/ =404;
+    }
+
+    # ── Logging ──
+    access_log /www/wwwlogs/api.synaglobal.vip.log;
+    error_log  /www/wwwlogs/api.synaglobal.vip.error.log;
+
+    # ── Upload limit ──
+    client_max_body_size 100m;
+}
diff --git a/requirements.txt b/requirements.txt
index f0bbf782..570cd425 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,6 +18,7 @@ paramiko==3.5.0
 asyncssh==2.17.0
 PyJWT==2.10.1
 bcrypt==4.2.1
+cryptography==44.0.0
 pyyaml==6.0.2
 rich==13.9.4
 redis[hiredis]==5.2.1
\ No newline at end of file
diff --git a/server/api/auth.py b/server/api/auth.py
index 5548ec25..1334fa0a 100644
--- a/server/api/auth.py
+++ b/server/api/auth.py
@@ -29,7 +29,7 @@ class RefreshRequest(BaseModel):
 
 
 class LogoutRequest(BaseModel):
-    admin_id: int
+    refresh_token: Optional[str] = None
 
 
 class TotpSetupRequest(BaseModel):
@@ -85,7 +85,10 @@ async def logout(
     service: AuthService = Depends(get_auth_service),
 ):
     """Invalidate refresh token (client should also discard access token)"""
-    result = await service.logout(payload.admin_id)
+    if payload.refresh_token:
+        result = await service.logout_by_token(payload.refresh_token)
+    else:
+        return {"success": True, "message": "已登出"}
     return result
 
 
diff --git a/server/application/services/auth_service.py b/server/application/services/auth_service.py
index ff0b6193..d11afc79 100644
--- a/server/application/services/auth_service.py
+++ b/server/application/services/auth_service.py
@@ -148,7 +148,7 @@ class AuthService:
         return admin
 
     async def logout(self, admin_id: int) -> dict:
-        """Invalidate refresh token"""
+        """Invalidate refresh token by admin ID"""
         admin = await self.admin_repo.get_by_id(admin_id)
         if admin:
             admin.jwt_refresh_token = None
@@ -156,6 +156,16 @@ class AuthService:
             await self.admin_repo.update(admin)
         return {"success": True, "message": "已登出"}
 
+    async def logout_by_token(self, refresh_token: str) -> dict:
+        """Invalidate refresh token by token value (used by frontend logout)"""
+        admin = await self.admin_repo.get_by_refresh_token(refresh_token)
+        if admin:
+            admin.jwt_refresh_token = None
+            admin.jwt_token_expires = None
+            await self.admin_repo.update(admin)
+            await self._audit("logout", "admin", admin.id, f"Logout: {admin.username}")
+        return {"success": True, "message": "已登出"}
+
     async def setup_totp(self, admin_id: int) -> dict:
         """Generate TOTP secret for an admin user (before enabling)"""
         import base64
diff --git a/server/domain/models/__init__.py b/server/domain/models/__init__.py
index 94f33734..b989f8ce 100644
--- a/server/domain/models/__init__.py
+++ b/server/domain/models/__init__.py
@@ -13,8 +13,6 @@ from sqlalchemy import (
 )
 from sqlalchemy.orm import declarative_base, relationship
 
-from cryptography.fernet import Fernet
-
 
 Base = declarative_base()
 
diff --git a/server/main.py b/server/main.py
index 9e6ba929..02d9e944 100644
--- a/server/main.py
+++ b/server/main.py
@@ -171,8 +171,9 @@ app.add_middleware(DbSessionMiddleware)
 app.add_middleware(
     CORSMiddleware,
     allow_origins=[
-        "http://172.31.170.47",        # WSL development
         "https://api.synaglobal.vip",   # Production HTTPS
+        "http://api.synaglobal.vip",    # Production HTTP (redirects to HTTPS)
+        "http://172.31.170.47",        # WSL development
         "http://localhost:8600",         # Local dev
     ],
     allow_credentials=True,
diff --git a/web/app/api.js b/web/app/api.js
index c562d274..726de2f3 100644
--- a/web/app/api.js
+++ b/web/app/api.js
@@ -88,10 +88,11 @@ function doLogout() {
   const { access, refresh } = _getTokens();
   if (access) {
     try {
-      navigator.sendBeacon(
-        API + '/auth/logout',
-        JSON.stringify({ refresh_token: refresh })
+      const blob = new Blob(
+        [JSON.stringify({ refresh_token: refresh })],
+        { type: 'application/json' }
       );
+      navigator.sendBeacon(API + '/auth/logout', blob);
     } catch {}
   }
   _logout();