[css-cascade-6] Remove scope-prelude from specificity calculation #8500

Author: mirisuzanne

css-cascade-6/Overview.bs

@@ -397,28 +397,28 @@ Scoping Styles: the ''@scope'' rule</h4>
 	* Selectors can only match elements that are [=in scope=].
 		This only applies to the [=subject=];
 		the rest of the selector can match unrestricted.
-	* Selectors are given the added specificity of
-		the most specific [=complex selector=] in the <<scope-start>> argument.
-
-		Note: This is designed to match the behavior of the '':is()'' selector.
 
 	* The [=cascade=] prioritizes declarations
 		with a [=scope proximity|more proximate=] [=scoping root=],
 		regardless of specificity or source order.
 
+Note: Unlike <a href="https://www.w3.org/TR/css-nesting/">Nesting</a>,
+selectors within an ''@scope'' rule
+do not acquire the specificity of any parent selector(s) in the ''@scope'' prelude.
+
 	<div class=example>
-		The following selectors have the same specificity (1,0,1):
+		The following selectors have the same specificity (0,0,1):
 
 		<pre class=lang-css>
 		@scope (#hero) {
 		  img { border-radius: 50%; }
 		}
 
-		#hero img { border-radius: 50%; }
+		:where(#hero) img { border-radius: 50%; }
 		</pre>
 
-		But because <{img}> is scoped,
-		it is weighted more strongly in the cascade.
+		But because one <{img}> selector is scoped,
+		that selector is weighted more strongly in the cascade.
 	</div>
 
 	<div class=example>