docs(css[structure]): move view transitions section after image rules

why: View transitions are not image-related — grouping them with
image CLS rules is misleading. Moving to end of file keeps
related sections together and matches the logical reading order.
what:
- Move view transitions CSS block after badge placeholder rules

Author: tony

docs/_static/css/custom.css

@@ -199,15 +199,6 @@ article {
  * ────────────────────────────────────────────────────────── */
 
 
-/* ── View Transitions (SPA navigation) ────────────────────
- * Crossfade between pages during SPA navigation.
- * Browsers without View Transitions API get instant swap.
- * ────────────────────────────────────────────────────────── */
-::view-transition-old(root),
-::view-transition-new(root) {
-  animation-duration: 150ms;
-}
-
 img {
   content-visibility: auto;
 }
@@ -232,3 +223,12 @@ img[src*="codecov.io"] {
   border-radius: 3px;
   background: var(--color-background-secondary);
 }
+
+/* ── View Transitions (SPA navigation) ────────────────────
+ * Crossfade between pages during SPA navigation.
+ * Browsers without View Transitions API get instant swap.
+ * ────────────────────────────────────────────────────────── */
+::view-transition-old(root),
+::view-transition-new(root) {
+  animation-duration: 150ms;
+}