diff --git a/.gitea/workflows/frontend.yml b/.gitea/workflows/frontend.yml
index b1485a4..4248a60 100644
--- a/.gitea/workflows/frontend.yml
+++ b/.gitea/workflows/frontend.yml
@@ -10,14 +10,16 @@ jobs:
     timeout-minutes: 15
     steps:
       - name: 获取源码
-        uses: https://github.com/actions/checkout@v4
+        # Runner 所在网络访问 github.com 不稳定；使用 git.crash.work 上的副本（手动从 GitHub 推送更新）。
+        uses: https://git.crash.work/actions/checkout@v4
         with:
           persist-credentials: false
-      - name: 准备 Node.js
-        uses: https://github.com/actions/setup-node@v4
-        with:
-          node-version: "22"
-          cache: npm
+      # Runner 位于中国大陆，ubuntu-latest 映射到自带 Node 22 的 node:22-bookworm-slim 镜像；
+      # 不再用 setup-node 从 GitHub 下载 Node（经常超时），只校验镜像内版本。
+      - name: 确认 Node.js
+        run: |
+          node -v
+          node -e 'if (Number(process.versions.node.split(".")[0]) !== 22) { console.error("需要 Node 22"); process.exit(1) }'
       - name: 安装锁定依赖
         run: npm ci
       - name: 安装测试浏览器
diff --git a/tests/helpers/console-browser.mjs b/tests/helpers/console-browser.mjs
index 3a2be0c..f2383b3 100644
--- a/tests/helpers/console-browser.mjs
+++ b/tests/helpers/console-browser.mjs
@@ -87,6 +87,57 @@ async function freePort() {
   return port;
 }
 
+// node --test 并行运行各验收文件：freePort 释放端口到预览进程绑定之间，其他文件的进程可能占用同一端口。
+// Nitro 绑定失败时只记录 EADDRINUSE 而不退出，HTTP 探测还会命中别的文件的预览服务，
+// 因此只以本进程输出的监听地址为准，冲突时换端口重试。
+async function startApp(attempts = 5) {
+  for (let attempt = 1; attempt <= attempts; attempt += 1) {
+    const port = await freePort();
+    const origin = `http://127.0.0.1:${port}`;
+    const app = startProcess(
+      [join(appRoot, ".output", "server", "index.mjs")],
+      {
+        cwd: appRoot,
+        env: {
+          // 使用生产已有的公开 API 配置接入外部边界，不读取或修改项目 .env。
+          ...process.env,
+          NODE_ENV: "production",
+          HOST: "127.0.0.1",
+          PORT: String(port),
+          NITRO_HOST: "127.0.0.1",
+          NITRO_PORT: String(port),
+          NUXT_PUBLIC_API_BASE: backendOrigin,
+        },
+      },
+    );
+    const state = await eventually(
+      async () => {
+        if (app.exitCode !== null || app.signalCode !== null) return "exited";
+        if (app.log.includes("EADDRINUSE")) return "collision";
+        if (!app.log.includes(`Listening on ${origin}`)) return false;
+        try {
+          const response = await fetch(`${origin}/login`, {
+            signal: AbortSignal.timeout(1000),
+          });
+          return response.ok && "ready";
+        } catch {
+          return false;
+        }
+      },
+      Boolean,
+      "Built app did not start",
+      30000,
+    );
+    if (state === "ready") return origin;
+    if (state === "exited") throw new Error(`Preview exited: ${app.log}`);
+    children.splice(children.indexOf(app), 1);
+    const exited = new Promise((resolve_) => app.once("exit", resolve_));
+    app.kill("SIGKILL");
+    await exited;
+  }
+  throw new Error(`Built app could not bind a free port in ${attempts} tries`);
+}
+
 before(
   async () => {
     // 必须先构建；此处运行 .output，而非开发服务器，确保测试走实际交付入口。
@@ -121,42 +172,7 @@ before(
       );
     });
 
-    const port = await freePort();
-    appOrigin = `http://127.0.0.1:${port}`;
-    const app = startProcess(
-      [join(appRoot, ".output", "server", "index.mjs")],
-      {
-        cwd: appRoot,
-        env: {
-          // 使用生产已有的公开 API 配置接入外部边界，不读取或修改项目 .env。
-          ...process.env,
-          NODE_ENV: "production",
-          HOST: "127.0.0.1",
-          PORT: String(port),
-          NITRO_HOST: "127.0.0.1",
-          NITRO_PORT: String(port),
-          NUXT_PUBLIC_API_BASE: backendOrigin,
-        },
-      },
-    );
-    await eventually(
-      async () => {
-        if (app.exitCode !== null)
-          throw new Error(`Preview exited: ${app.log}`);
-        try {
-          return (
-            await fetch(`${appOrigin}/login`, {
-              signal: AbortSignal.timeout(1000),
-            })
-          ).ok;
-        } catch {
-          return false;
-        }
-      },
-      Boolean,
-      "Built app did not start",
-      30000,
-    );
+    appOrigin = await startApp();
 
     browser = await chromium.launch({
       executablePath: chromePath,
diff --git a/tests/review-style-layout.e2e.test.mjs b/tests/review-style-layout.e2e.test.mjs
index a8fbf77..254069b 100644
--- a/tests/review-style-layout.e2e.test.mjs
+++ b/tests/review-style-layout.e2e.test.mjs
@@ -215,7 +215,7 @@ async function bannerGeometry(page) {
       textBottom: text.bottom,
       topbarTop: bar.top,
       topbarBottom: bar.bottom,
-      viewport: innerWidth,
+      viewport: document.documentElement.clientWidth,
       scrollWidth: document.documentElement.scrollWidth,
     };
   });
@@ -242,10 +242,11 @@ test(
             state.topbarTop >= state.bottom - 0.5,
           "The full notice and topbar must occupy separate visible regions",
         );
-        assert.equal(
-          state.scrollWidth,
-          state.viewport,
-          "A maintenance notice must not widen the document",
+        // 根元素使用 scrollbar-gutter: stable；Linux/Windows 的经典滚动条预留槽位后，
+        // 内容宽度会比视口窄 15px，只有 macOS 覆盖式滚动条才会相等。验收只要求不产生横向溢出。
+        assert.ok(
+          state.scrollWidth <= state.viewport,
+          `A maintenance notice must not widen the document: ${state.scrollWidth} > ${state.viewport}`,
         );
         sizes.push({ width, noticeFits: true, headerBelowNotice: true });
       }
diff --git a/tests/review-style-motion.e2e.test.mjs b/tests/review-style-motion.e2e.test.mjs
index 317fa65..4e4d0f5 100644
--- a/tests/review-style-motion.e2e.test.mjs
+++ b/tests/review-style-motion.e2e.test.mjs
@@ -88,7 +88,9 @@ async function enterMonitor(page) {
   await login(page, "/servers/server?id=5");
   await page.getByRole("tab", { name: "监控", exact: true }).waitFor();
   await page.evaluate(() => document.fonts.ready);
-  await page.clock.pauseAt(await page.evaluate(() => Date.now() + 50));
+  // pauseAt 是跳转而非真实等待；只留 50ms 时，读时间与暂停之间的调度延迟（并行验收或 CI）
+  // 会让目标落在过去并报 “Cannot fast-forward to the past”，因此留出 1 秒余量。
+  await page.clock.pauseAt(await page.evaluate(() => Date.now() + 1000));
   await page.getByRole("tab", { name: "监控", exact: true }).click();
   await eventually(
     async () => {