diff --git a/src/clis/zhihu/question.test.ts b/src/clis/zhihu/question.test.ts
index 01288b6e..7e994991 100644
--- a/src/clis/zhihu/question.test.ts
+++ b/src/clis/zhihu/question.test.ts
@@ -1,6 +1,6 @@
 import { describe, expect, it, vi } from 'vitest';
 import { getRegistry } from '../../registry.js';
-import { AuthRequiredError } from '../../errors.js';
+import { AuthRequiredError, CliError } from '../../errors.js';
 import './question.js';
 
 describe('zhihu question', () => {
@@ -8,21 +8,25 @@ describe('zhihu question', () => {
     const cmd = getRegistry().get('zhihu/question');
     expect(cmd?.func).toBeTypeOf('function');
 
-    const evaluate = vi.fn().mockImplementation(async (_fn: unknown, args: { questionId: string; answerLimit: number }) => {
-      expect(args).toEqual({ questionId: '2021881398772981878', answerLimit: 3 });
+    const goto = vi.fn().mockResolvedValue(undefined);
+    const evaluate = vi.fn().mockImplementation(async (js: string) => {
+      expect(js).toContain('questions/2021881398772981878/answers?limit=3');
+      expect(js).toContain("credentials: 'include'");
       return {
         ok: true,
         answers: [
           {
-            author: { name: 'alice' },
-            voteup_count: 12,
-            content: '<p>Hello <b>Zhihu</b></p>',
+            rank: 1,
+            author: 'alice',
+            votes: 12,
+            content: 'Hello Zhihu',
           },
         ],
       };
     });
 
     const page = {
+      goto,
       evaluate,
     } as any;
 
@@ -37,6 +41,7 @@ describe('zhihu question', () => {
       },
     ]);
 
+    expect(goto).toHaveBeenCalledWith('https://www.zhihu.com/question/2021881398772981878');
     expect(evaluate).toHaveBeenCalledTimes(1);
   });
 
@@ -45,6 +50,7 @@ describe('zhihu question', () => {
     expect(cmd?.func).toBeTypeOf('function');
 
     const page = {
+      goto: vi.fn().mockResolvedValue(undefined),
       evaluate: vi.fn().mockResolvedValue({ ok: false, status: 403 }),
     } as any;
 
@@ -58,6 +64,7 @@ describe('zhihu question', () => {
     expect(cmd?.func).toBeTypeOf('function');
 
     const page = {
+      goto: vi.fn().mockResolvedValue(undefined),
       evaluate: vi.fn().mockResolvedValue({ ok: false, status: 500 }),
     } as any;
 
@@ -68,4 +75,35 @@ describe('zhihu question', () => {
       message: 'Zhihu question answers request failed with HTTP 500',
     });
   });
+
+  it('surfaces browser-side fetch exceptions instead of HTTP unknown', async () => {
+    const cmd = getRegistry().get('zhihu/question');
+    expect(cmd?.func).toBeTypeOf('function');
+
+    const page = {
+      goto: vi.fn().mockResolvedValue(undefined),
+      evaluate: vi.fn().mockResolvedValue({ ok: false, status: 0, error: 'Failed to fetch' }),
+    } as any;
+
+    await expect(
+      cmd!.func!(page, { id: '2021881398772981878', limit: 3 }),
+    ).rejects.toMatchObject({
+      code: 'FETCH_ERROR',
+      message: 'Zhihu question answers request failed: Failed to fetch',
+    });
+  });
+
+  it('rejects non-numeric question IDs', async () => {
+    const cmd = getRegistry().get('zhihu/question');
+    expect(cmd?.func).toBeTypeOf('function');
+
+    const page = { goto: vi.fn(), evaluate: vi.fn() } as any;
+
+    await expect(
+      cmd!.func!(page, { id: "abc'; alert(1); //", limit: 1 }),
+    ).rejects.toBeInstanceOf(CliError);
+
+    expect(page.goto).not.toHaveBeenCalled();
+    expect(page.evaluate).not.toHaveBeenCalled();
+  });
 });
diff --git a/src/clis/zhihu/question.ts b/src/clis/zhihu/question.ts
index 7c220a37..7fac8060 100644
--- a/src/clis/zhihu/question.ts
+++ b/src/clis/zhihu/question.ts
@@ -14,45 +14,45 @@ cli({
   columns: ['rank', 'author', 'votes', 'content'],
   func: async (page, kwargs) => {
     const { id, limit = 5 } = kwargs;
+    const questionId = String(id);
+    if (!/^\d+$/.test(questionId)) {
+      throw new CliError('INVALID_INPUT', 'Question ID must be numeric', 'Example: opencli zhihu question 123456789');
+    }
     const answerLimit = Number(limit);
 
-    const stripHtml = (html: string) =>
-      (html || '').replace(/<[^>]+>/g, '').replace(/&nbsp;/g, ' ').replace(/&lt;/g, '<').replace(/&gt;/g, '>').replace(/&amp;/g, '&').trim();
+    await page.goto(`https://www.zhihu.com/question/${questionId}`);
 
-    // Only fetch answers here. The question detail endpoint is not used by the
-    // current CLI output and can fail independently, which would incorrectly
-    // turn a successful answers response into a login error.
-    const result = await (page as any).evaluate(
-      async ({ questionId, answerLimit }: { questionId: string; answerLimit: number }) => {
-        const aResp = await fetch(
-          `https://www.zhihu.com/api/v4/questions/${questionId}/answers?limit=${answerLimit}&offset=0&sort_by=default&include=data[*].content,voteup_count,comment_count,author`,
-          { credentials: 'include' },
-        );
-        if (!aResp.ok) return { ok: false as const, status: aResp.status };
-        const a = await aResp.json();
-        return { ok: true as const, answers: Array.isArray(a?.data) ? a.data : [] };
-      },
-      { questionId: String(id), answerLimit },
-    );
+    const url = `https://www.zhihu.com/api/v4/questions/${questionId}/answers?limit=${answerLimit}&offset=0&sort_by=default&include=data[*].content,voteup_count,comment_count,author`;
+    const result: any = await page.evaluate(`(async () => {
+      const strip = (html) => (html || '').replace(/<[^>]+>/g, '').replace(/&nbsp;/g, ' ').replace(/&lt;/g, '<').replace(/&gt;/g, '>').replace(/&amp;/g, '&').trim();
+      try {
+        const r = await fetch(${JSON.stringify(url)}, { credentials: 'include' });
+        if (!r.ok) return { ok: false, status: r.status };
+        const a = await r.json();
+        const answers = (a?.data || []).map((item, i) => ({
+          rank: i + 1,
+          author: item.author?.name || 'anonymous',
+          votes: item.voteup_count || 0,
+          content: strip(item.content || '').substring(0, 200),
+        }));
+        return { ok: true, answers };
+      } catch (e) {
+        return { ok: false, status: 0, error: e instanceof Error ? e.message : String(e) };
+      }
+    })()`);
 
     if (!result?.ok) {
       if (result?.status === 401 || result?.status === 403) {
         throw new AuthRequiredError('www.zhihu.com', 'Failed to fetch question data from Zhihu');
       }
+      const detail = result?.status > 0 ? ` with HTTP ${result.status}` : (result?.error ? `: ${result.error}` : '');
       throw new CliError(
         'FETCH_ERROR',
-        `Zhihu question answers request failed with HTTP ${result?.status ?? 'unknown'}`,
+        `Zhihu question answers request failed${detail}`,
         'Try again later or rerun with -v for more detail',
       );
     }
 
-    const answers = result.answers.slice(0, answerLimit).map((a: any, i: number) => ({
-      rank: i + 1,
-      author: a.author?.name ?? 'anonymous',
-      votes: a.voteup_count ?? 0,
-      content: stripHtml(a.content ?? '').slice(0, 200),
-    }));
-
-    return answers;
+    return result.answers;
   },
 });