修改完成

tests/f10-video-status-contract.ps1

@@ -28,6 +28,17 @@ foreach ($forbidden in @('<ModulePage page-id="f10"', 'import ModulePage from'))
   if ($page.Contains($forbidden)) { throw "F10 retains forbidden dependency: $forbidden" }
 }
 
+if ($page -match '(?m)^\s*position\s*:\s*relative\s*;') {
+  throw 'F10 ordinary page content must not use position: relative'
+}
+
+foreach ($selector in @('.video-status-lead text', '.video-status-card__body')) {
+  $escapedSelector = [regex]::Escape($selector)
+  if ($page -notmatch "(?s)$escapedSelector\s*\{[^}]*z-index\s*:\s*1\s*;") {
+    throw "F10 grid content must render above its decorative skin: $selector"
+  }
+}
+
 if ($catalog -match '(?m)^\s*f10\s*:') {
   throw 'F10 obsolete page-catalog owner must be removed'
 }