diff --git a/src/components/ConfirmDialog.tsx b/src/components/ConfirmDialog.tsx
index e2a1c0c..7a1306d 100644
--- a/src/components/ConfirmDialog.tsx
+++ b/src/components/ConfirmDialog.tsx
@@ -1,5 +1,6 @@
 import React from "react";
 import { AlertTriangle, X } from "lucide-react";
+import { isLinux } from "../lib/platform";
 
 interface ConfirmDialogProps {
   isOpen: boolean;
@@ -26,7 +27,7 @@ export const ConfirmDialog: React.FC<ConfirmDialogProps> = ({
     <div className="fixed inset-0 z-50 flex items-center justify-center">
       {/* Backdrop */}
       <div
-        className="absolute inset-0 bg-black/50 backdrop-blur-sm"
+        className={`absolute inset-0 bg-black/50${isLinux() ? "" : " backdrop-blur-sm"}`}
         onClick={onCancel}
       />
 
diff --git a/src/components/ProviderForm.tsx b/src/components/ProviderForm.tsx
index 9045e78..58fdef9 100644
--- a/src/components/ProviderForm.tsx
+++ b/src/components/ProviderForm.tsx
@@ -19,6 +19,7 @@ import ClaudeConfigEditor from "./ProviderForm/ClaudeConfigEditor";
 import CodexConfigEditor from "./ProviderForm/CodexConfigEditor";
 import KimiModelSelector from "./ProviderForm/KimiModelSelector";
 import { X, AlertCircle, Save } from "lucide-react";
+import { isLinux } from "../lib/platform";
 // 分类仅用于控制少量交互（如官方禁用 API Key），不显示介绍组件
 
 const COMMON_CONFIG_STORAGE_KEY = "cc-switch:common-config-snippet";
@@ -966,7 +967,11 @@ const ProviderForm: React.FC<ProviderFormProps> = ({
       }}
     >
       {/* Backdrop */}
-      <div className="absolute inset-0 bg-black/50 dark:bg-black/70 backdrop-blur-sm" />
+      <div
+        className={`absolute inset-0 bg-black/50 dark:bg-black/70${
+          isLinux() ? "" : " backdrop-blur-sm"
+        }`}
+      />
 
       {/* Modal */}
       <div className="relative bg-white dark:bg-gray-900 rounded-xl shadow-lg max-w-3xl w-full mx-4 max-h-[90vh] overflow-hidden flex flex-col">
diff --git a/src/components/ProviderForm/ClaudeConfigEditor.tsx b/src/components/ProviderForm/ClaudeConfigEditor.tsx
index 03aa98b..b7ecaa1 100644
--- a/src/components/ProviderForm/ClaudeConfigEditor.tsx
+++ b/src/components/ProviderForm/ClaudeConfigEditor.tsx
@@ -1,6 +1,7 @@
 import React, { useEffect, useState } from "react";
 import JsonEditor from "../JsonEditor";
 import { X, Save } from "lucide-react";
+import { isLinux } from "../../lib/platform";
 
 interface ClaudeConfigEditorProps {
   value: string;
@@ -133,7 +134,11 @@ const ClaudeConfigEditor: React.FC<ClaudeConfigEditorProps> = ({
           }}
         >
           {/* Backdrop - 统一背景样式 */}
-          <div className="absolute inset-0 bg-black/50 dark:bg-black/70 backdrop-blur-sm" />
+          <div
+            className={`absolute inset-0 bg-black/50 dark:bg-black/70${
+              isLinux() ? "" : " backdrop-blur-sm"
+            }`}
+          />
 
           {/* Modal - 统一窗口样式 */}
           <div className="relative bg-white dark:bg-gray-900 rounded-xl shadow-lg max-w-2xl w-full mx-4 max-h-[90vh] overflow-hidden flex flex-col">
diff --git a/src/components/ProviderForm/CodexConfigEditor.tsx b/src/components/ProviderForm/CodexConfigEditor.tsx
index 69b0ed9..415a7d5 100644
--- a/src/components/ProviderForm/CodexConfigEditor.tsx
+++ b/src/components/ProviderForm/CodexConfigEditor.tsx
@@ -1,5 +1,6 @@
 import React, { useState, useEffect } from "react";
 import { X, Save } from "lucide-react";
+import { isLinux } from "../../lib/platform";
 
 interface CodexConfigEditorProps {
   authValue: string;
@@ -166,7 +167,11 @@ const CodexConfigEditor: React.FC<CodexConfigEditorProps> = ({
           }}
         >
           {/* Backdrop - 统一背景样式 */}
-          <div className="absolute inset-0 bg-black/50 dark:bg-black/70 backdrop-blur-sm" />
+          <div
+            className={`absolute inset-0 bg-black/50 dark:bg-black/70${
+              isLinux() ? "" : " backdrop-blur-sm"
+            }`}
+          />
 
           {/* Modal - 统一窗口样式 */}
           <div className="relative bg-white dark:bg-gray-900 rounded-xl shadow-lg max-w-2xl w-full mx-4 max-h-[90vh] overflow-hidden flex flex-col">
diff --git a/src/components/SettingsModal.tsx b/src/components/SettingsModal.tsx
index e4f5b42..2ed48e6 100644
--- a/src/components/SettingsModal.tsx
+++ b/src/components/SettingsModal.tsx
@@ -12,6 +12,7 @@ import "../lib/tauri-api";
 import { relaunchApp } from "../lib/updater";
 import { useUpdate } from "../contexts/UpdateContext";
 import type { Settings } from "../types";
+import { isLinux } from "../lib/platform";
 
 interface SettingsModalProps {
   onClose: () => void;
@@ -163,7 +164,11 @@ export default function SettingsModal({ onClose }: SettingsModalProps) {
         if (e.target === e.currentTarget) onClose();
       }}
     >
-      <div className="absolute inset-0 bg-black/50 dark:bg-black/70 backdrop-blur-sm" />
+      <div
+        className={`absolute inset-0 bg-black/50 dark:bg-black/70${
+          isLinux() ? "" : " backdrop-blur-sm"
+        }`}
+      />
       <div className="relative bg-white dark:bg-gray-900 rounded-xl shadow-2xl w-[500px] overflow-hidden">
         {/* 标题栏 */}
         <div className="flex items-center justify-between px-6 py-4 border-b border-gray-200 dark:border-gray-800">
diff --git a/src/lib/platform.ts b/src/lib/platform.ts
new file mode 100644
index 0000000..adcc402
--- /dev/null
+++ b/src/lib/platform.ts
@@ -0,0 +1,30 @@
+// 轻量平台检测，避免在 SSR 或无 navigator 的环境报错
+export const isMac = (): boolean => {
+  try {
+    const ua = navigator.userAgent || "";
+    const plat = (navigator.platform || "").toLowerCase();
+    return /mac/i.test(ua) || plat.includes("mac");
+  } catch {
+    return false;
+  }
+};
+
+export const isWindows = (): boolean => {
+  try {
+    const ua = navigator.userAgent || "";
+    return /windows|win32|win64/i.test(ua);
+  } catch {
+    return false;
+  }
+};
+
+export const isLinux = (): boolean => {
+  try {
+    const ua = navigator.userAgent || "";
+    // WebKitGTK/Chromium 在 Linux/Wayland/X11 下 UA 通常包含 Linux 或 X11
+    return /linux|x11/i.test(ua) && !/android/i.test(ua) && !isMac() && !isWindows();
+  } catch {
+    return false;
+  }
+};
+