diff --git a/web/static/dev.html b/web/static/dev.html
index c55b5db..1e79cf3 100644
--- a/web/static/dev.html
+++ b/web/static/dev.html
@@ -847,8 +847,8 @@
      文字入口；悬停可速览，点击后固定展开，且两组固定态互斥。 */
   #conversation-side-rail {
     position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
-    z-index: 6; display: flex; flex-direction: column; width: max-content; min-width: 72px;
-    max-width: min(280px, calc(100% - 24px)); max-height: 72%; padding: 4px;
+    z-index: 6; display: flex; flex-direction: column;
+    width: min(176px, calc(100% - 24px)); max-height: 72%; padding: 4px;
     overflow-y: auto; overflow-x: hidden; border: 1px solid rgba(225, 227, 229, .86);
     border-radius: 11px; background: rgba(255, 255, 255, .92);
     box-shadow: 0 4px 16px rgba(24, 32, 41, .09); backdrop-filter: blur(8px);
@@ -862,7 +862,7 @@
   #conversation-side-rail::-webkit-scrollbar { display: none; }
   #conversation-side-divider { height: 1px; margin: 4px 3px; background: var(--border-soft); }
   .conversation-rail-section {
-    display: flex; flex-direction: column; align-items: stretch; gap: 2px; min-width: 62px;
+    display: flex; flex-direction: column; align-items: stretch; gap: 2px; min-width: 0;
   }
   .conversation-rail-caption {
     display: grid; grid-template-columns: 1fr auto 8px; align-items: center; gap: 4px;