Added screenshot where thhey belongs to at the project hp

website/src/download/index.njk

@@ -212,6 +212,45 @@ description: Download the latest stable KST4Contest packages for Windows, Linux
   </div>
 </section>
 
+<section class="section">
+  <div class="section-heading">
+    <p class="eyebrow">Conference papers</p>
+    <h2>Background from GHz-Tagung Dorsten</h2>
+    <p>
+      These historical conference papers document KST4Contest at the time of the 2025 and 2026 talks.
+      They provide project background, not a complete description of the current feature set.
+    </p>
+  </div>
+
+  <div class="grid">
+    <article class="card content-card">
+      <h3>GHz-Tagung 2025</h3>
+      <p>
+        How KST4Contest grew from practical contest operation and addressed limitations of conventional
+        chat clients.
+      </p>
+      <div class="actions">
+        <a class="button secondary" href="/assets/papers/kst4contest-ghz-tagung-2025-de.pdf">Download German PDF</a>
+        <a class="button secondary" href="/assets/papers/kst4contest-ghz-tagung-2025-en.pdf">Download English PDF</a>
+      </div>
+      <p><a href="/background/#paper-2025">Background and source details →</a></p>
+    </article>
+
+    <article class="card content-card">
+      <h3>GHz-Tagung 2026</h3>
+      <p>
+        How archived ON4KST chat data was evaluated and how the findings influenced later KST4Contest
+        functions.
+      </p>
+      <div class="actions">
+        <a class="button secondary" href="/assets/papers/kst4contest-ghz-tagung-2026-de.pdf">Download German PDF</a>
+        <a class="button secondary" href="/assets/papers/kst4contest-ghz-tagung-2026-en.pdf">Download English PDF</a>
+      </div>
+      <p><a href="/background/#paper-2026">Background and source details →</a></p>
+    </article>
+  </div>
+</section>
+
 <section class="section">
   <div class="cta-panel">
     <p class="eyebrow">Choosing a package</p>