diff --git a/src/components/AiChat.vue b/src/components/AiChat.vue
index c387ba7..2e2c8d8 100644
--- a/src/components/AiChat.vue
+++ b/src/components/AiChat.vue
@@ -779,6 +779,7 @@ body.ai-sidebar-resizing * {
   display: inline-flex;
   align-items: center;
   gap: 3px;
+  min-width: 0;
 }
 /* UX-2025-20 §7.4: AI 生成标题淡入(0.3s opacity + transform 过渡) */
 .ai-conv-item-title--flash {
@@ -815,8 +816,6 @@ body.ai-sidebar-resizing * {
   height: 6px;
   border-radius: 50%;
   background: var(--df-primary, #4f8cff);
-  margin-left: 4px;
-  vertical-align: middle;
   flex-shrink: 0;
   animation: ai-conv-gen-pulse 1.4s ease-in-out infinite;
 }