diff --git a/web/src/styles/globals.css b/web/src/styles/globals.css
index 4f0b0f240..4005c109c 100644
--- a/web/src/styles/globals.css
+++ b/web/src/styles/globals.css
@@ -9378,7 +9378,7 @@ html:not(.dark) .app-workspace-shell.is-creation-workspace .app-workspace-stage
     gap: 0;
 }
 
-.creation-home .creation-reference-track-wrapper { position: relative; min-width: 0; margin: -2px 0 var(--space-2); }
+.creation-home .creation-reference-track-wrapper { position: relative; min-width: 0; min-height: 85px; margin: -2px 0 var(--space-2); }
 .creation-home .creation-reference-stack-shell { position: relative; width: fit-content; min-width: 0; max-width: 100%; }
 .creation-home .creation-reference-track {
     display: flex;
@@ -9469,7 +9469,7 @@ html:not(.dark) .creation-home .creation-reference-track-button { border-color:
 html:not(.dark) .creation-home .creation-reference-add-button:hover:not(:disabled) { background: rgba(28, 32, 37, .055); }
 
 @media (max-width: 680px) {
-    .creation-home .creation-reference-track-wrapper { margin-bottom: var(--space-2); }
+    .creation-home .creation-reference-track-wrapper { min-height: 69px; margin-bottom: var(--space-2); }
     .creation-home .creation-reference-stack-card { width: 46px; height: 61px; flex-basis: 46px; }
     .creation-home .creation-reference-track.is-expanded .creation-reference-stack-card { width: 42px; height: 56px; flex-basis: 42px; }
     .creation-home .creation-reference-add-button { width: 46px; height: 61px; flex-basis: 46px; }
@@ -9569,8 +9569,9 @@ html:not(.dark) .creation-duration-choices button:hover { background: rgba(28, 3
     padding: 18px 20px 8px;
 }
 
+/* 上传 input 为 hidden，编辑器是该网格的唯一可见子项；创作页输入区保持整行宽度。 */
 .creation-home .creation-chat-composer.is-empty .creation-chat-writing-surface,
-.creation-home .creation-chat-composer.is-thread .creation-chat-writing-surface { grid-template-columns: 62px minmax(0, 1fr); gap: 16px; }
+.creation-home .creation-chat-composer.is-thread .creation-chat-writing-surface { grid-template-columns: minmax(0, 1fr); gap: 0; }
 .creation-home .creation-chat-editor textarea,
 .creation-home .creation-chat-composer.is-thread .creation-chat-editor textarea,
 .creation-home .creation-chat-mention-container { min-height: 124px; }