Add podcast platform badges and Headliner widget

src/App.css

@@ -460,6 +460,25 @@
   align-items: center;
 }
 
+.headliner-widget-wrap {
+  margin-top: 2rem;
+}
+
+.headliner-widget-frame {
+  display: block;
+  width: 100%;
+  min-height: 580px;
+  border: 0;
+  border-radius: 12px;
+}
+
+.headliner-widget-empty {
+  margin: 0;
+  text-align: center;
+  color: rgba(255, 255, 255, 0.72);
+  font-size: 0.95rem;
+}
+
 .platform-btn {
   display: inline-flex;
   align-items: center;
@@ -495,6 +514,19 @@
   display: block;
 }
 
+.platform-btn-image {
+  background: transparent;
+  padding: 0;
+  border-radius: 0;
+}
+
+.platform-badge {
+  display: block;
+  width: 150px;
+  max-width: 100%;
+  height: auto;
+}
+
 /* ── About ── */
 .section-about {
   background: #0d0d0d;