feat: center bubble via flex (above head), bigger mascot/text, smoother tap bounce

src/pages/index/index.ux

@@ -17,6 +17,8 @@
 
       <!-- 中页：主页 / 吉祥物（无按钮，点击互动） -->
       <div class="page-item center-page">
+        <!-- 气泡区：始终占位，让气泡在头像正上方居中 -->
+        <div class="bubble-zone">
           <div class="bubble" if="{{bubbleVisible}}">
             <text class="bubble-title">DeepSeek 余额</text>
             <text class="bubble-balance">¥{{bubbleBalance}}</text>
@@ -24,6 +26,7 @@
             <text class="bubble-mode {{isPeak ? 'bubble-mode-peak' : 'bubble-mode-off'}}">{{peakLabel}}</text>
             <text class="bubble-fun">{{bubbleText}}</text>
           </div>
+        </div>
         <image class="mascot {{tapAnim ? 'mascot-tap' : ''}}" src="/common/dsniang.png" onclick="onTap" />
         <text class="peak {{isPeak ? 'peak-red' : 'peak-green'}}">{{peakLabel}}</text>
         <text class="stats">余额 {{balance}}</text>
@@ -153,7 +156,7 @@ export default {
     // 敲击一下 Q 弹
     this.tapAnim = true
     const self = this
-    setTimeout(() => { self.tapAnim = false }, 280)
+    setTimeout(() => { self.tapAnim = false }, 130)
 
     const idx = Math.floor(Math.random() * this.lines.length)
     const mode = this.isPeak ? '当前是峰时，钱包瑟瑟发抖' : '当前是谷时，薅羊毛好时机'
@@ -208,8 +211,13 @@ export default {
   flex-direction: column;
   justify-content: center;
   align-items: center;
-  /* 给气泡留顶部空间 */
+}
-  padding-top: 40px;
+
+.bubble-zone {
+  width: 100%;
+  height: 132px;
+  justify-content: center;
+  align-items: center;
 }
 
 .page-title {
@@ -254,17 +262,17 @@ export default {
 
 /* 吉祥物：比之前大一点 + 敲击 Q 弹 */
 .mascot {
-  width: 250px;
+  width: 280px;
-  height: 250px;
+  height: 280px;
-  transition: transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
+  transition: transform 0.16s cubic-bezier(0.34, 1.56, 0.64, 1);
 }
 
 .mascot-tap {
-  transform: scale(0.9) translateY(3px);
+  transform: scale(0.88);
 }
 
 .peak {
-  font-size: 18px;
+  font-size: 20px;
   font-weight: bold;
   margin-top: 10px;
 }
@@ -278,17 +286,13 @@ export default {
 }
 
 .stats {
-  color: #9fb0d0;
+  color: #b8c7e6;
-  font-size: 14px;
+  font-size: 15px;
-  margin-top: 6px;
+  margin-top: 7px;
 }
 
 /* 气泡：头像正上方居中，稍微放大 */
 .bubble {
-  position: absolute;
-  top: 64px;
-  left: 50%;
-  margin-left: -120px;
   width: 240px;
   padding: 12px 14px;
   border-radius: 16px;