Thumbnails: prefer *_thumb child note, fallback to first image; round embedded images and inline code; theme figcaptions

theme/blog_share_theme.css

@@ -780,6 +780,8 @@ html.theme-light {
     background-color: #3c3836;
     color: #ebdbb2;
     border-color: #504945;
+    border-radius: 4px;
+    padding: 0.1em 0.35em;
 }
 
 html.theme-light .ck-content pre,
@@ -796,6 +798,21 @@ html.theme-light #content code {
     border-color: #bdae93;
 }
 
+/* ---------- Eingebettete Bilder: Radius wie Inline-Code ---------- */
+#content figure img,
+#content img:not(.blog-thumb) {
+    border-radius: 4px;
+}
+
+/* ---------- Bildunterschriften (Gruvbox) ---------- */
+#content figcaption {
+    font-size: 0.85em;
+    font-style: italic;
+    color: var(--text-menu);
+    text-align: center;
+    margin-top: 6px;
+}
+
 .hljs {
     background: #282828;
     color: #ebdbb2;