docs: 优化英文文档格式和配置

docs/en/stage-0/index.md

@@ -97,20 +97,20 @@ Master the Vibe Coding workflow, learn to deconstruct requirements, and independ
     title="Where to Find Ideas"
     description="Use reference apps, trend sources, business signals, and VC lists to narrow down better product directions."
   />
+  <NavCard
+    href="/en/stage-1/appendix-double-diamond/"
+    title="Double Diamond"
+    description="Learn when to explore the problem first and when to start comparing solutions and prototypes."
+  />
   <NavCard
     href="/en/stage-1/appendix-jobs-to-be-done/"
     title="Jobs to Be Done"
-    description="Turn vague product ideas into clearer user scenarios, real needs, and better MVP directions."
+    description="Use JTBD to understand what users really want to get done and judge product direction more clearly."
   />
   <NavCard
     href="/en/stage-1/appendix-mom-test/"
     title="The Mom Test"
-    description="Learn how to ask better interview questions and collect evidence instead of just encouragement."
-  />
-  <NavCard
-    href="/en/stage-1/appendix-double-diamond/"
-    title="Double Diamond"
-    description="Learn when to explore the problem first and when to start comparing solutions and prototypes."
+    description="Learn how to talk to users properly and avoid false-positive feedback like “that sounds good.”"
   />
 </NavGrid>
 

docs/en/stage-1/appendix-double-diamond/index.md

@@ -1,5 +1,5 @@
 ---
-title: 'Double Diamond: First Choose the Right Problem, Then Build the Right Solution'
+title: 'Double Diamond: First Do the Right Thing, Then Do It Right'
 description: 'A beginner-friendly introduction to the Double Diamond. Understand Discover, Define, Develop, and Deliver so you do not rush into prototypes before the real problem is clear.'
 ---
 
@@ -7,7 +7,7 @@ description: 'A beginner-friendly introduction to the Double Diamond. Understand
 const duration = 'About <strong>1.5 hours</strong>'
 </script>
 
-# Double Diamond: First Choose the Right Problem, Then Build the Right Solution
+# Double Diamond: First Do the Right Thing, Then Do It Right
 
 <a id="top-dd"></a>
 

docs/en/stage-1/appendix-idea-sources/index.md

@@ -1,5 +1,5 @@
 ---
-title: 'Where to Find Ideas: 3 Beginner-Friendly Sources'
+title: 'Where to Find Ideas: 3 Reference Sources That Work Best for Beginners'
 description: 'A beginner-friendly guide to product idea discovery. This appendix focuses on websites for browsing idea lists, trend sources, real business signals, and VC requests so you can find a more concrete direction faster.'
 ---
 
@@ -7,7 +7,7 @@ description: 'A beginner-friendly guide to product idea discovery. This appendix
 const duration = 'About <strong>1.5 hours</strong>'
 </script>
 
-# Where to Find Ideas: 3 Beginner-Friendly Sources
+# Where to Find Ideas: 3 Reference Sources That Work Best for Beginners
 
 <a id="top-idea-sources"></a>
 

docs/en/stage-1/appendix-jobs-to-be-done/index.md

@@ -1,5 +1,5 @@
 ---
-title: 'Jobs to Be Done: Find What Users Are Really Trying to Get Done'
+title: 'Use Jobs to Be Done to Find What Users Really Want to Get Done'
 description: 'A beginner-friendly introduction to Jobs to Be Done. Learn how to turn a vague idea into a clearer user scenario, a sharper need, and a more grounded MVP direction.'
 ---
 
@@ -7,7 +7,7 @@ description: 'A beginner-friendly introduction to Jobs to Be Done. Learn how to
 const duration = 'About <strong>1.5 hours</strong>'
 </script>
 
-# Jobs to Be Done: Find What Users Are Really Trying to Get Done
+# Use Jobs to Be Done to Find What Users Really Want to Get Done
 
 <a id="top-jtbd"></a>
 

docs/en/stage-1/appendix-mom-test/index.md

@@ -1,5 +1,5 @@
 ---
-title: 'The Mom Test: How to Validate Demand Through User Interviews'
+title: 'The Mom Test: A User Interview Method for Validating Demand'
 description: 'A beginner-friendly introduction to The Mom Test. Learn how to avoid polite feedback, ask about real behavior and real costs, and turn “sounds good” into more reliable demand evidence.'
 ---
 
@@ -7,7 +7,7 @@ description: 'A beginner-friendly introduction to The Mom Test. Learn how to avo
 const duration = 'About <strong>1.5 hours</strong>'
 </script>
 
-# The Mom Test: How to Validate Demand Through User Interviews
+# The Mom Test: A User Interview Method for Validating Demand
 
 <a id="top-mom"></a>