diff --git a/app/assets/stylesheets/components/topics.css b/app/assets/stylesheets/components/topics.css
index 3363f9a..1282a0e 100644
--- a/app/assets/stylesheets/components/topics.css
+++ b/app/assets/stylesheets/components/topics.css
@@ -123,6 +123,14 @@
   box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
 }
 
+.topic-icon-badge-sup {
+  bottom: -6px;
+  right: -6px;
+  border-radius: 6px;
+  padding: 2px 6px;
+  font-variant-numeric: tabular-nums;
+}
+
 .status-border {
   border-left: 8px solid transparent;
 }
diff --git a/app/views/topics/_topics.html.slim b/app/views/topics/_topics.html.slim
index 302752d..af09d04 100644
--- a/app/views/topics/_topics.html.slim
+++ b/app/views/topics/_topics.html.slim
@@ -8,10 +8,11 @@
   tr class="topic-row topic-#{state[:status]}" data-topic-id=topic.id data-last-message-id=topic.messages.maximum(:id)
     td class="topic-title status-border status-#{state[:status] || 'new'}" data-label="Topic"
       - if state[:status] == :reading
+        - unread_count = [topic.messages.count - state[:read_count], 0].max
         .topic-icon.topic-icon-reading
-          i.fa-solid.fa-message
-            - unread_count = topic.messages.count - state[:read_count]
-            span.topic-icon-badge = unread_count < 10 ? unread_count : "9+"
+          i.fa-solid.fa-envelope
+          - if unread_count.positive?
+            span.topic-icon-badge.topic-icon-badge-sup = unread_count
       - if user_signed_in? && other_team_readers.any?
         - reader_count = other_team_readers.size
         div class="topic-icon activity-team-read" data-controller="hover-popover" data-hover-popover-delay-value="200" data-action="mouseenter->hover-popover#show mouseleave->hover-popover#scheduleHide"