[css-forms-1] checkmark styles

Fix radio button checkmark styles
w3c/csswg-drafts@dafee0b

Use visibility for checkmark
w3c/csswg-drafts@1ad6d5b

Author: triple-underscore

css-forms-ja.html

@@ -159,8 +159,8 @@
 ●●options
 
 spec_title:CSS Gap Decorations Module Level 1
-spec_date:2026-02-25
-trans_update:2026-02-26
+spec_date:2026-02-26
+trans_update:2026-02-27
 	source_checked:
 page_state_key:CSS
 original_url:https://drafts.csswg.org/css-forms-1/
@@ -2706,16 +2706,24 @@ <h3 title="Checkboxes &amp; radios">~checkboxと~radio</h3>
     `justify-content$p: center;
 }
 
-input[type=radio] {
-    `border-radius$p: 50%;
+input[type=checkbox]:not([switch])::checkmark {
+    `content$p: '\2713' / '';
 }
 
-input[type=checkbox]:not([switch]):checked::checkmark {
-    `content$p: '\2713' / '';
+input[type=radio]::checkmark {
+    `content$p: '';
+}
+
+input[type=checkbox]:not([switch], :checked)::checkmark {【 `,^c ？】
+input[type=radio]:not(:checked)::checkmark {
+    `visibility$p: hidden;
+}
+
+input[type=radio] {
+    `border-radius$p: 50%;
 }
 
 input[type=radio]:checked::checkmark {
-    `content$p: '';
     `background-color$p: currentColor;
     `display$p: inline-block;
     `border-radius$p: inherit;