修改问答助手框

frontend/App.vue

@@ -881,7 +881,7 @@ async function sendChatMessage() {
     : text
 
   try {
-    const res = await fetch('/api/chat', {
+    const res = await fetch('http://StoryMapAI.api.digitalmars.com.cn/api/chat', {
       method: 'POST',
       headers: { 'Content-Type': 'application/json' },
       body: JSON.stringify({ question })
@@ -1365,11 +1365,14 @@ function scrollToChatBottom() {
 .chat-toggle-btn {
   top: 16px;
   right: 16px;
-  border-radius: 999px;
-  padding: 9px 14px;
+  bottom: auto;
+  border-radius: 8px;
+  padding: 8px 7px;
   color: #f2e3be;
   cursor: pointer;
-  font-size: 13px;
+  font-size: 12px;
+  writing-mode: vertical-rl;
+  line-height: 1.15;
 }
 
 .chat-toggle-btn:hover {
@@ -1380,7 +1383,7 @@ function scrollToChatBottom() {
   top: 16px;
   right: 16px;
   width: 350px;
-  height: 520px;
+  height: 380px;
   border-radius: 12px;
   display: flex;
   flex-direction: column;