diff --git a/apps/web/src/styles/base.css b/apps/web/src/styles/base.css
index 43a6602..a491c3d 100644
--- a/apps/web/src/styles/base.css
+++ b/apps/web/src/styles/base.css
@@ -1616,20 +1616,23 @@ ul[data-type='task_list'] li {
 /* The checkbox is the top flex child; nudge it onto the first text line and
    drop the leading/trailing margins of the item's paragraph so the text meets
    the checkbox instead of dropping a line. Covers both DOM shapes: read-mode
-   `li > input` + `li > p`, and editor `li > label > input` + `li > div > p`. */
+   `li > input` + `li > p`, and editor `li > label > input` + `li > div > p`.
+   Uses `:first-of-type`/`:last-of-type` (NOT `:first-child`): in the read-mode
+   markup the `<input>` is the first child, so the paragraph is never
+   `:first-child` and a `:first-child` reset would silently miss (issue #137). */
 ul[data-type='task_list'] li > input[type='checkbox'],
 ul[data-type='task_list'] li > label {
   flex: none;
   margin-top: 0.25em;
 }
 
-ul[data-type='task_list'] li > p:first-child,
-ul[data-type='task_list'] li > div > p:first-child {
+ul[data-type='task_list'] li > p:first-of-type,
+ul[data-type='task_list'] li > div > p:first-of-type {
   margin-top: 0;
 }
 
-ul[data-type='task_list'] li > p:last-child,
-ul[data-type='task_list'] li > div > p:last-child {
+ul[data-type='task_list'] li > p:last-of-type,
+ul[data-type='task_list'] li > div > p:last-of-type {
   margin-bottom: 0;
 }