Update index.html

index.html

@@ -62,20 +62,10 @@
       </div>
     </header>
 
-    <section class="section">
-      <div class="card figure" aria-label="system overview">
-        <h2>System Overview</h2>
-        <!-- Click to open the original PDF (optional) -->
-        <a href="architecture.pdf" target="_blank" rel="noopener">
-          <picture>
-            <source srcset="architecture.webp" type="image/webp">
-            <img src="architecture.png" alt="System architecture diagram" loading="lazy" width="1800" height="1100">
-          </picture>
-        </a>
-        <p class="caption">
-          Figure 1. Automotive-ENV system architecture. <span class="muted">(Click to open the PDF.)</span>
-        </p>
-      </div>
+    <section class="card figure" aria-label="system-overview">
+      <h2>System Overview</h2>
+      <img src="demo_arch.png" alt="System architecture diagram" loading="lazy">
+      <p class="caption">Figure 1. Automotive-ENV architecture overview.</p>
     </section>
 
     <!-- demo video -->