update readme

Author: liqing-ustc

README.md

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+<p align="center">
 <h1 style="
   font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif;
-  font-size:40px;
+  font-size:30px;
   font-weight:700;
   line-height:1.25;
   text-align:center;
   margin:0 0 10px;">
-  DART-GUI: Efficient Multi-turn RL for GUI Agents via Decoupled Training and Adaptive Data Curation 
-</h1>
+  <img src="https://computer-use-agents.github.io/dart-gui/icon.png" alt="DART-GUI" style="height: 30px;"> DART-GUI 
+  <br>
+    <span style="font-size:22px;">Efficient Multi-turn RL for GUI Agents via Decoupled Training and Adaptive Data Curation</span>
+  </h1>
+</p>
+
 
 <p align="center">
 &nbsp&nbsp🌐 <a href="https://computer-use-agents.github.io/dart-gui/">Website</a>&nbsp&nbsp | &nbsp&nbsp📑 <a href="https://arxiv.org/abs/2509.23866">arXiv</a>&nbsp&nbsp | &nbsp&nbsp🤖 <a href="">Model (coming soon)</a>&nbsp&nbsp | &nbsp&nbsp🤗 <a href="">Dataset (coming soon)</a>&nbsp&nbsp
 </p>
 
+<p align="center">
+  <img src="https://computer-use-agents.github.io/dart-gui/stats/teaser.png" alt="DART-GUI" style="height: 300px;">
+</p>
+
 
 ## 📢 Updates
 - 2025-09-30: We released our [paper](https://arxiv.org/abs/2509.23866) and [project page](https://computer-use-agents.github.io/dart-gui). Check it out!