feat: 首页底部导航做成自动隐藏 鼠标在这个区域划过自动出来， 过一阵子没经过 就又隐藏起来

src/views/Home.vue

@@ -180,7 +180,12 @@
             </div>
 
           <!-- Bottom Dock (overlay on map) -->
-          <div class="dock-wrap" @mousemove="onDockMove" @mouseleave="onDockLeave">
+          <div
+            class="dock-wrap"
+            :class="{ 'is-hidden': !isNavVisible }"
+            @mousemove="onDockMove"
+            @mouseleave="onDockLeave"
+          >
             <div class="dock-arrow left" @click="dockPrev" title="上一页"></div>
             <div class="dockbar">
               <div
@@ -201,6 +206,8 @@
           </div>
           </div>
         </div>
+
+        <div class="bottom-sensor" @mouseenter="isNavVisible = true"></div>
       </section>
 
       <!-- Right -->
@@ -312,6 +319,8 @@ export default {
   name: "Home",
   data() {
     return {
+      isNavVisible: true,
+      timer: null,
       currentHoverIndex: null,
       baseW: 1920,
       baseH: 1080,
@@ -478,6 +487,13 @@ onlineChart: null,
     this.onlineChart && this.onlineChart.dispose();
     this.controlChart && this.controlChart.dispose();
     this.deviceChart && this.deviceChart.dispose();
+    // 组件销毁前清除定时器，防止内存泄漏
+    if (this.timer) clearTimeout(this.timer);
+  },
+  mounted () {
+    this.timer = setTimeout(() => {
+      this.isNavVisible = false;
+    }, 2000); // 2000毫秒（2秒）后收起底部菜单
   },
   methods: {
     onMouseMove(e) {
@@ -499,10 +515,22 @@ onlineChart: null,
       const rect = this.$el.getBoundingClientRect();
       this.mouseX = e.clientX - rect.left;
       this.mouseY = e.clientY - rect.top;
+
+      // 显示菜单
+      if (this.timer) {
+        clearTimeout(this.timer);
+        this.timer = null;
+      }
+      this.isNavVisible = true;
     },
     onDockLeave() {
       this.mouseX = null;
       this.mouseY = null;
+
+      // 收起菜单
+      this.timer = setTimeout(() => {
+        this.isNavVisible = false;
+      }, 2000); // 2000毫秒（2秒）后收起
     },
     navItemStyle(idx) {
       if (this.mouseX == null) return { transform: "translateZ(0) scale(1)" };
@@ -1399,6 +1427,22 @@ onlineChart: null,
   justify-content:center;
   gap: calc(var(--s) * 22px);
 }
+.dock-wrap.is-hidden {
+  opacity: 0.3; /* 变透明一点，更有科技感 */
+  filter: blur(2px); /* 甚至可以加一点模糊 */
+  transition: transform .8s cubic-bezier(0.45, 0, 0.55, 1); /* 经典的平滑缓冲 */
+  transform: translateX(-50%) translateY(90%);
+}
+/* 底部感应区 */
+.bottom-sensor {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  width: 100%;
+  height: 10px; /* 只需要很窄一条 */
+  z-index: 998;
+  background: transparent;
+}
 .dock-arrow{
   width: calc(var(--s) * 54px);
   height: calc(var(--s) * 54px);