diff --git a/scripts/check-maintenance-page.mjs b/scripts/check-maintenance-page.mjs
index f0ba8e54f..0c1ece88e 100644
--- a/scripts/check-maintenance-page.mjs
+++ b/scripts/check-maintenance-page.mjs
@@ -19,7 +19,14 @@ import os from 'node:os';
 import path from 'node:path';
 import { fileURLToPath } from 'node:url';
 
-const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
+const repoRoot = path.resolve(
+  path.dirname(fileURLToPath(import.meta.url)),
+  '..',
+);
+const bashExecutable =
+  process.platform === 'win32'
+    ? 'C:\\Program Files\\Git\\bin\\bash.exe'
+    : 'bash';
 const failures = [];
 const requestedFiles = [];
 
@@ -48,7 +55,10 @@ function validateDefaultPage(filePath) {
   }
   for (const [pattern, label] of [
     [/(?:今天|今晚|明天|昨天|昨日)/u, '相对日期'],
-    [/(?:20\d{2}[-/.年]\d{1,2}(?:[-/.月]\d{1,2}日?)?|\d{1,2}月\d{1,2}日)/u, '具体日期'],
+    [
+      /(?:20\d{2}[-/.年]\d{1,2}(?:[-/.月]\d{1,2}日?)?|\d{1,2}月\d{1,2}日)/u,
+      '具体日期',
+    ],
     [/(?:[01]?\d|2[0-3]):[0-5]\d/u, '具体维护时间'],
   ]) {
     if (pattern.test(source)) {
@@ -58,15 +68,48 @@ function validateDefaultPage(filePath) {
 }
 
 function runScript(scriptPath, args, env) {
-  return spawnSync('bash', [scriptPath, ...args], {
+  const bashArgs = args.map((arg) =>
+    path.isAbsolute(arg) ? toBashPath(arg) : arg,
+  );
+  const bashEnv = Object.fromEntries(
+    Object.entries(env).map(([key, value]) => [
+      key,
+      path.isAbsolute(value) ? toBashPath(value) : value,
+    ]),
+  );
+  const envAssignments = Object.entries(bashEnv).map(
+    ([key, value]) => `${key}=${value}`,
+  );
+  const commandArgs = [
+    ...envAssignments,
+    'bash',
+    toBashPath(scriptPath),
+    ...bashArgs,
+  ];
+  const command = `exec env ${commandArgs.map(shellQuote).join(' ')}`;
+  return spawnSync(bashExecutable, ['-c', command], {
     cwd: repoRoot,
-    env: { ...process.env, ...env },
+    env: process.env,
     encoding: 'utf8',
   });
 }
 
+function shellQuote(value) {
+  return `'${String(value).replaceAll("'", `'"'"'`)}'`;
+}
+
+function toBashPath(filePath) {
+  const windowsDrive = /^([A-Za-z]):[\\/](.*)$/u.exec(filePath);
+  if (windowsDrive) {
+    return `/${windowsDrive[1].toLowerCase()}/${windowsDrive[2].replaceAll('\\', '/')}`;
+  }
+  return filePath;
+}
+
 function validateRuntimePageLifecycle() {
-  const tempRoot = mkdtempSync(path.join(os.tmpdir(), 'genarrative-maintenance-'));
+  const tempRoot = mkdtempSync(
+    path.join(os.tmpdir(), 'genarrative-maintenance-'),
+  );
   const markerFile = path.join(tempRoot, 'state', 'enabled');
   const runtimePageFile = path.join(tempRoot, 'state', 'page.html');
   const sourcePageFile = path.join(tempRoot, 'announcement.html');
@@ -81,6 +124,9 @@ function validateRuntimePageLifecycle() {
   if (!onScriptSource.includes('replace_file_atomically')) {
     fail('maintenance-on 必须通过统一 helper 原子替换公告页和 marker。');
   }
+  if (!onScriptSource.includes('install -m 0644')) {
+    fail('maintenance-on 安装运行态公告页时必须显式设置 0644 权限。');
+  }
   if (/\bmv\s+-[^\s]*T\b/u.test(onScriptSource)) {
     fail('maintenance-on 不得使用 GNU mv 专属的 -T 参数。');
   }
@@ -95,7 +141,9 @@ function validateRuntimePageLifecycle() {
       env,
     );
     if (enable.status !== 0) {
-      fail(`maintenance-on --page-file 执行失败: ${enable.stderr || enable.stdout}`);
+      fail(
+        `maintenance-on --page-file 执行失败: ${enable.stderr || enable.stdout}`,
+      );
       return;
     }
     if (!existsSync(markerFile)) {
@@ -107,7 +155,10 @@ function validateRuntimePageLifecycle() {
       if (readFileSync(runtimePageFile, 'utf8') !== announcement) {
         fail('运行态公告页内容与输入文件不一致。');
       }
-      if ((statSync(runtimePageFile).mode & 0o777) !== 0o644) {
+      if (
+        process.platform !== 'win32' &&
+        (statSync(runtimePageFile).mode & 0o777) !== 0o644
+      ) {
         fail('运行态公告页权限必须为 0644。');
       }
     }
@@ -130,7 +181,9 @@ function validateRuntimePageLifecycle() {
     chmodSync(runtimePageFile, 0o644);
     const genericEnable = runScript(onScript, ['generic maintenance'], env);
     if (genericEnable.status !== 0) {
-      fail(`通用 maintenance-on 执行失败: ${genericEnable.stderr || genericEnable.stdout}`);
+      fail(
+        `通用 maintenance-on 执行失败: ${genericEnable.stderr || genericEnable.stdout}`,
+      );
     }
     if (existsSync(runtimePageFile)) {
       fail('新维护窗口未提供 --page-file 时必须清理残留公告页。');
@@ -265,10 +318,9 @@ function validateGatewayConfiguration() {
   }
 }
 
-for (const filePath of
-  requestedFiles.length > 0
-    ? requestedFiles
-    : [path.join(repoRoot, 'public/maintenance.html')]) {
+for (const filePath of requestedFiles.length > 0
+  ? requestedFiles
+  : [path.join(repoRoot, 'public/maintenance.html')]) {
   validateDefaultPage(filePath);
 }