Fix centering of the header block and pair the setup figures

The header opened a centered div and then left a blank line, which closes the
raw HTML block, so the title and subtitle were parsed as top-level markdown and
rendered flush left. Rewrite the block as HTML with no blank lines, and place
the two capture-setup figures in a table so they sit side by side with captions.
Switch the citation to an arXiv entry with a placeholder identifier.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

README.md

@@ -117,27 +117,30 @@ extra_gated_button_content: Submit access request
 ---
 
 <div align="center">
-
-# ACE-Data-0
-
-## Human-Centric Ambient Capture as Embodied Data Engine
-
-**S-Lab, Nanyang Technological University, Singapore** &nbsp;·&nbsp; **ACE Robotics**
-
-[![Blog](https://img.shields.io/badge/Blog-ACE--Data--0-0054A6?logo=googlechrome&logoColor=white)](https://ace-data-engine.github.io/ACE-Data-0/)
-![Technical Report](https://img.shields.io/badge/Technical_Report-Coming_Soon-6B7280)
-[![License](https://img.shields.io/badge/License-Research_Only-A33B20)](./LICENSE)
-![Release](https://img.shields.io/badge/Data_Files-Coming_Soon-6B7280)
-
-<img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/data-teaser.webp" alt="ACE-Data-0 teaser: table-scale and room-scale ambient capture with synchronized multi-modal streams">
-
-**ACE transforms real home environments into spatially calibrated, temporally synchronized
-recording studios for embodied AI.**
-
-▶ [Watch the demo video](https://ace-data-engine.github.io/ACE-Data-0/assets/videos/teaser-video.mp4)
-&nbsp;·&nbsp;
-[Read the full story on the blog](https://ace-data-engine.github.io/ACE-Data-0/)
-
+  <h1>ACE-Data-0</h1>
+  <h3>Human-Centric Ambient Capture as Embodied Data Engine</h3>
+  <p>
+    <b>S-Lab, Nanyang Technological University, Singapore</b>
+    &nbsp;·&nbsp;
+    <b>ACE Robotics</b>
+  </p>
+  <p>
+    <a href="https://ace-data-engine.github.io/ACE-Data-0/"><img src="https://img.shields.io/badge/Blog-ACE--Data--0-0054A6?logo=googlechrome&amp;logoColor=white" alt="Blog"></a>
+    <img src="https://img.shields.io/badge/Technical_Report-Coming_Soon-6B7280" alt="Technical report coming soon">
+    <a href="./LICENSE"><img src="https://img.shields.io/badge/License-Research_Only-A33B20" alt="Research-only license"></a>
+    <img src="https://img.shields.io/badge/Data_Files-Coming_Soon-6B7280" alt="Data files coming soon">
+  </p>
+  <p>
+    <img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/data-teaser.webp" width="100%" alt="ACE-Data-0 teaser: table-scale and room-scale ambient capture with synchronized multi-modal streams">
+  </p>
+  <p>
+    <b>ACE transforms real home environments into spatially calibrated, temporally synchronized recording studios for embodied AI.</b>
+  </p>
+  <p>
+    ▶ <a href="https://ace-data-engine.github.io/ACE-Data-0/assets/videos/teaser-video.mp4">Watch the demo video</a>
+    &nbsp;·&nbsp;
+    <a href="https://ace-data-engine.github.io/ACE-Data-0/">Read the full story on the blog</a>
+  </p>
 </div>
 
 ## Dataset Description
@@ -275,10 +278,16 @@ part of the capture pipeline.
 | ACE-Sense-Glove Lite | Contact pressure | full-palm pressure map, both hands |
 | GoPro / ACE-Ego-Head | Audio | contact events, appliance operation, ambient scene sound |
 
-<div align="center">
-<img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/setup-ace-t.webp" alt="Table-scale configuration" width="45%">
-<img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/setup-ace-r.webp" alt="Room-scale configuration" width="45%">
-</div>
+<table align="center" width="100%">
+  <tr>
+    <td width="50%" align="center"><img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/setup-ace-t.webp" width="100%" alt="Table-scale configuration"></td>
+    <td width="50%" align="center"><img src="https://ace-data-engine.github.io/ACE-Data-0/assets/images/setup-ace-r.webp" width="100%" alt="Room-scale configuration"></td>
+  </tr>
+  <tr>
+    <td align="center"><sub><b>Table-scale configuration</b></sub></td>
+    <td align="center"><sub><b>Room-scale configuration</b></sub></td>
+  </tr>
+</table>
 
 ### Capture Protocol
 
@@ -477,20 +486,23 @@ access.
 
 ## Citation
 
-The technical report is in preparation. In the meantime, please cite:
+If you use ACE-Data-0 in your research, please cite:
 
 ```bibtex
-@misc{cao2026acedata0,
-  title         = {ACE-Data-0: Human-Centric Ambient Capture as Embodied Data Engine},
-  author        = {Cao, Yukang and Xie, Haozhe and Wen, Beichen and Yao, Runmao and
-                   Liu, Yinghao and Huang, Yue and Liao, Zhichao and Wang, Yunxiang and
-                   Liu, Haiheng and Tian, Xingshun and Su, Dawei and Zhuo, Long and
-                   Tao, Dacheng and Wang, Xiaogang and Pan, Liang and Liu, Ziwei},
-  year          = {2026},
-  howpublished  = {\url{https://ace-data-engine.github.io/ACE-Data-0/}}
+@article{cao2026acedata0,
+  title   = {ACE-Data-0: Human-Centric Ambient Capture as Embodied Data Engine},
+  author  = {Cao, Yukang and Xie, Haozhe and Wen, Beichen and Yao, Runmao and
+             Liu, Yinghao and Huang, Yue and Liao, Zhichao and Wang, Yunxiang and
+             Liu, Haiheng and Tian, Xingshun and Su, Dawei and Zhuo, Long and
+             Tao, Dacheng and Wang, Xiaogang and Pan, Liang and Liu, Ziwei},
+  journal = {arXiv preprint arXiv:2607.00000},
+  year    = {2026}
 }
 ```
 
+The arXiv identifier above is a placeholder and will be replaced when the technical report is
+posted.
+
 ## Contact
 
 For project updates, visit the [ACE-Data-0 blog](https://ace-data-engine.github.io/ACE-Data-0/),