diff --git a/biji-qianduan/src/assets/styles/mobile.css b/biji-qianduan/src/assets/styles/mobile.css
index d4c3f61..8224fc4 100644
--- a/biji-qianduan/src/assets/styles/mobile.css
+++ b/biji-qianduan/src/assets/styles/mobile.css
@@ -120,4 +120,24 @@
 /* 针对回收站的卡片式布局 (默认隐藏) */
 .trash-cards {
   display: none;
+}
+
+/* 优化移动端悬浮操作按钮 (FAB) */
+.fab {
+  position: fixed !important;
+  right: 25px !important;
+  bottom: 90px !important; /* 调整位置以避开主题切换按钮 */
+  z-index: 1050 !important;
+  width: 56px !important;
+  height: 56px !important;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
+  transition: transform 0.2s ease-in-out !important;
+}
+
+.fab:hover {
+  transform: scale(1.05); /* 添加轻微的悬停放大效果 */
+}
+
+.fab .el-icon {
+  font-size: 24px; /* 调整图标大小 */
 }
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