diff --git a/README.md b/README.md
index 7d7fd732..3edecb87 100644
--- a/README.md
+++ b/README.md
@@ -63,14 +63,10 @@ Use the links below to open trading accounts for crypto and supported US stock,
 
 ## Quick demo
 
-<p align="center">
-  <a href="https://drive.google.com/file/d/1frzw-HDZ3viQvLOQKsAJGc9bT0dXs68D/view">
-    <img src="screenshots/demo-cover.png" alt="NOFX quick demo video" width="900"/>
-  </a>
-</p>
+https://github.com/user-attachments/assets/5e2f7bab-88ce-4c30-882a-0db3b9afd20f
 
 <p align="center">
-  Click the cover image to watch the demo video.
+  <em>Illustrative simulated preview — not real trading performance.</em>
 </p>
 
 ---
diff --git a/docs/i18n/ja/README.md b/docs/i18n/ja/README.md
index 725c4c92..6ad00a1c 100644
--- a/docs/i18n/ja/README.md
+++ b/docs/i18n/ja/README.md
@@ -63,14 +63,10 @@ curl -fsSL https://raw.githubusercontent.com/NoFxAiOS/nofx/main/install.sh | bas
 
 ## クイックデモ
 
-<p align="center">
-  <a href="https://drive.google.com/file/d/1frzw-HDZ3viQvLOQKsAJGc9bT0dXs68D/view">
-    <img src="../../../screenshots/demo-cover.png" alt="NOFX quick demo video" width="900"/>
-  </a>
-</p>
+https://github.com/user-attachments/assets/5e2f7bab-88ce-4c30-882a-0db3b9afd20f
 
 <p align="center">
-  カバー画像をクリックしてデモ動画をご覧ください。
+  <em>これはシミュレーションのデモ映像であり、実際の取引実績ではありません。</em>
 </p>
 
 ---
diff --git a/docs/i18n/ko/README.md b/docs/i18n/ko/README.md
index d6e4968e..25413f1d 100644
--- a/docs/i18n/ko/README.md
+++ b/docs/i18n/ko/README.md
@@ -63,14 +63,10 @@ curl -fsSL https://raw.githubusercontent.com/NoFxAiOS/nofx/main/install.sh | bas
 
 ## 빠른 데모
 
-<p align="center">
-  <a href="https://drive.google.com/file/d/1frzw-HDZ3viQvLOQKsAJGc9bT0dXs68D/view">
-    <img src="../../../screenshots/demo-cover.png" alt="NOFX quick demo video" width="900"/>
-  </a>
-</p>
+https://github.com/user-attachments/assets/5e2f7bab-88ce-4c30-882a-0db3b9afd20f
 
 <p align="center">
-  커버 이미지를 클릭해 데모 영상을 보세요.
+  <em>시뮬레이션 데모 영상이며 실제 거래 성과가 아닙니다.</em>
 </p>
 
 ---
diff --git a/docs/i18n/ru/README.md b/docs/i18n/ru/README.md
index ef48ca4d..b78a6863 100644
--- a/docs/i18n/ru/README.md
+++ b/docs/i18n/ru/README.md
@@ -63,14 +63,10 @@ curl -fsSL https://raw.githubusercontent.com/NoFxAiOS/nofx/main/install.sh | bas
 
 ## Короткая демонстрация
 
-<p align="center">
-  <a href="https://drive.google.com/file/d/1frzw-HDZ3viQvLOQKsAJGc9bT0dXs68D/view">
-    <img src="../../../screenshots/demo-cover.png" alt="NOFX quick demo video" width="900"/>
-  </a>
-</p>
+https://github.com/user-attachments/assets/5e2f7bab-88ce-4c30-882a-0db3b9afd20f
 
 <p align="center">
-  Нажмите на обложку, чтобы посмотреть демо.
+  <em>Демонстрационное видео смоделировано — это не реальные торговые результаты.</em>
 </p>
 
 ---
diff --git a/docs/i18n/uk/README.md b/docs/i18n/uk/README.md
index ac983621..f901d625 100644
--- a/docs/i18n/uk/README.md
+++ b/docs/i18n/uk/README.md
@@ -63,14 +63,10 @@ curl -fsSL https://raw.githubusercontent.com/NoFxAiOS/nofx/main/install.sh | bas
 
 ## Коротка демонстрація
 
-<p align="center">
-  <a href="https://drive.google.com/file/d/1frzw-HDZ3viQvLOQKsAJGc9bT0dXs68D/view">
-    <img src="../../../screenshots/demo-cover.png" alt="NOFX quick demo video" width="900"/>
-  </a>
-</p>
+https://github.com/user-attachments/assets/5e2f7bab-88ce-4c30-882a-0db3b9afd20f
 
 <p align="center">
-  Натисніть на обкладинку, щоб переглянути демо.
+  <em>Демонстраційне відео змодельоване — це не реальні торгові результати.</em>
 </p>
 
 ---
diff --git a/docs/i18n/vi/README.md b/docs/i18n/vi/README.md
index e77bd685..8f26bfb3 100644
--- a/docs/i18n/vi/README.md
+++ b/docs/i18n/vi/README.md
@@ -63,14 +63,10 @@ Sử dụng các liên kết bên dưới để mở tài khoản giao dịch ch
 
 ## Demo nhanh
 
-<p align="center">
-  <a href="https://drive.google.com/file/d/1frzw-HDZ3viQvLOQKsAJGc9bT0dXs68D/view">
-    <img src="../../../screenshots/demo-cover.png" alt="NOFX quick demo video" width="900"/>
-  </a>
-</p>
+https://github.com/user-attachments/assets/5e2f7bab-88ce-4c30-882a-0db3b9afd20f
 
 <p align="center">
-  Nhấp vào ảnh bìa để xem video demo.
+  <em>Bản xem trước mô phỏng minh họa — không phải hiệu suất giao dịch thực tế.</em>
 </p>
 
 ---
diff --git a/docs/i18n/zh-CN/README.md b/docs/i18n/zh-CN/README.md
index d3d75f00..fa89e755 100644
--- a/docs/i18n/zh-CN/README.md
+++ b/docs/i18n/zh-CN/README.md
@@ -65,14 +65,10 @@ curl -fsSL https://raw.githubusercontent.com/NoFxAiOS/nofx/main/install.sh | bas
 
 ## 快速演示
 
-<p align="center">
-  <a href="https://drive.google.com/file/d/1frzw-HDZ3viQvLOQKsAJGc9bT0dXs68D/view">
-    <img src="../../../screenshots/demo-cover.png" alt="NOFX quick demo video" width="900"/>
-  </a>
-</p>
+https://github.com/user-attachments/assets/5e2f7bab-88ce-4c30-882a-0db3b9afd20f
 
 <p align="center">
-  点击封面图观看演示视频。
+  <em>本视频为模拟演示，非真实交易业绩。</em>
 </p>
 
 ---