bug fix: 从fade out阶段刚好过渡到平移阶段后，无法直接返回fade out阶段

src/views/HomeView.vue

@@ -219,7 +219,7 @@ export default {
       } else if (vOld === 1 && vNew === 2) {
         this.treasureFadeOutProgress += 0.001
       } else if (vOld === 2 && vNew === 3) {
-        this.translateLength += 0.001
+        this.translateLength -= 0.001
       } else if (vOld === 3 && vNew === 2) {
         this.treasureFadeOutProgress -= 0.001
       } else if (vOld === 2 && vNew === 1) {