Update sponsorship page: add sponsored talk option

_upcoming/cz.pycon.org/src/pages/sponsorship.astro

@@ -43,10 +43,9 @@ const baseUrl = import.meta.env.BASE_URL;
         <br /><a href="tel:+420603974857">+420&nbsp;603&nbsp;974&nbsp;857</a>
       </p>
       <p>
-        <b>Mr. Jakub Červinka</b>, Partnerships – PyCon CZ 27 <br /><a href="mailto:sponsorship@pycon.cz"
+        <b>Maria Baluch</b>, Partnerships – PyCon CZ 27 <br /><a href="mailto:sponsorship@pycon.cz"
           >sponsorship@pycon.cz</a
         >
-        <br /><a href="tel:+420605859988">+420&nbsp;605&nbsp;859&nbsp;988</a>
       </p>
       <a
         class="btn btn-primary"
@@ -60,7 +59,7 @@ const baseUrl = import.meta.env.BASE_URL;
 
   <h2>Event summary</h2>
   <ul class="pc-text-columns">
-    <li>Spring 2027 in Pilsen</li>
+    <li>April 2027 in Pilsen</li>
     <li><strong>400 attendees:</strong> professionals, students and hobbyist Pythonistas</li>
     <li>
       2 conference days with 2 tracks primarily in English covering topics like data processing, AI/ML, web-dev,
@@ -142,11 +141,24 @@ const baseUrl = import.meta.env.BASE_URL;
     </div>
   </div>
 
-  <h2>Custom options (add‑ons)</h2>
-
-  <p class="lead">Available for <b>Silver</b>, <b>Gold</b> and <b>Platinum</b> packages only.</p>
+  <h2 class="mb-4">Custom options (add‑ons)</h2>
 
   <div class="row row-gap-5">
+    <div class="col-md-6 col-lg-3">
+      <div class="h-100 rounded-3 p-3 p-sm-4 pb-1 pb-sm-2 pc-sponsor-tier pc-sponsor-tier--addon">
+        <h3 class="mt-0">Sponsored talk</h3>
+        <p class="h4 mt-0">
+          <span class="d-inline-block">20,000 CZK</span> or
+          <span class="d-inline-block">840 EUR</span>
+        </p>
+        <p class="h5 mt-0 pc-sponsor-tier__exclusive">exclusive:<br />only three available</p>
+        <p class="lead">Slot in the programme, clearly marked as sponsored</p>
+        <p>Will be thoroughly reviewed by the program team, submission deadline December&nbsp;12,&nbsp;2026</p>
+        <p>Includes a ticket and optional coaching for the speaker</p>
+        <p>Attendance at the sponsored talk is not&nbsp;guaranteed</p>
+        <p><i>Available with Platinum / Gold only</i></p>
+      </div>
+    </div>
     <div class="col-md-6 col-lg-3">
       <div class="h-100 rounded-3 p-3 p-sm-4 pb-1 pb-sm-2 pc-sponsor-tier pc-sponsor-tier--addon">
         <h3 class="mt-0">Venue Booth</h3>
@@ -169,6 +181,7 @@ const baseUrl = import.meta.env.BASE_URL;
         <p class="h5 mt-0 pc-sponsor-tier__exclusive">exclusive:<br />only one available</p>
         <p class="lead">Partner logo on the lanyard that everybody will be wearing</p>
         <p>Lanyards will have only one Partner logo printed + logo of PyCon CZ</p>
+        <p><i>Available with Platinum / Gold only</i></p>
       </div>
     </div>
     <div class="col-md-6 col-lg-3">
@@ -224,7 +237,7 @@ const baseUrl = import.meta.env.BASE_URL;
       </div>
     </div>
 
-    <div class="col-md-6 col-lg-6">
+    <div class="col-md-6 col-lg-3">
       <div class="h-100 rounded-3 p-3 p-sm-4 pb-1 pb-sm-2 pc-sponsor-tier pc-sponsor-tier--addon">
         <h3 class="mt-0">Custom sponsorship</h3>
         <p class="h4 mt-0">