Update README.md

README.md

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 # Welcome to Dexmal 👋
 
-[Watch Dexmal video](https://www.dexmal.com/videos/home/home-1.8b5f7479.mp4)
+<a href="https://www.dexmal.com/videos/home/home-1.8b5f7479.mp4">
+  <img
+    src="https://www.dexmal.com/path/to/home-preview.gif"
+    alt="Dexmal preview"
+    width="100%"
+  />
+</a>
 
-This is the organization of **Dexmal**. In this organization, we continuously release models, datasets, demos, and other AI-related projects for the open-source community.
+Dexmal builds intelligent, useful, and trustworthy robots.
+
+We develop and share open AI models, datasets, demos, and tools that help bring embodied intelligence into the physical world. Our work focuses on Vision-Language-Action models, world models, and the practical deployment of embodied intelligence in real-world robotic systems.