diff --git a/css-text-4/Overview.bs b/css-text-4/Overview.bs
index ca50590779bf..10891c1cfe1b 100644
--- a/css-text-4/Overview.bs
+++ b/css-text-4/Overview.bs
@@ -10720,14 +10720,11 @@ Text Spacing Character Classes</h4>
 
 	<dl>
 		<dt><dfn>ideographs</dfn>
-		<dd>Includes all [=typographic character units=] [[CSS-TEXT-3]] whose base character is listed below:
-			<ul>
-				<li>All characters in the range of U+3041 to U+30FF,
-					except those that belong to Unicode Punctuation [P*] [=general category=].
-				<li>CJK Strokes (U+31C0 to U+31EF).
-				<li>Katakana Phonetic Extensions (U+31F0 to U+31FF).
-				<li>All characters that have the Han [=script property=].
-			</ul>
+		<dd>Includes all [=typographic character units=] [[CSS-TEXT-3]]
+		whose base character:
+		* belongs to Unicode Letters [L*], Mark [M*], Symbols [S*], or Numbers [N*] [=general category=], and
+		* has the Han, Hiragana, or Katakana [=script property=], and
+		* is not categorized as East Asian Halfwidth (H) by [[!UAX11]]
 
 		<dt><dfn>non-ideographic letters</dfn>
 		<dd>