fix: 省级地图页面隐藏logo，只显示返回按钮

- 全国地图：显示logo区域，隐藏返回按钮
- 省级地图：隐藏logo区域，显示返回按钮
- 优化省级地图页面的视觉层级

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

js/ui/MapInterface.js

@@ -89,13 +89,17 @@ export class MapInterface {
             // 全国地图
             geoJsonUrl = mapConfig.geoJsonUrls.china;
             
-            // 隐藏面包屑和返回按钮
+            // 隐藏面包屑和返回按钮，显示logo
             document.getElementById('breadcrumb-container').classList.add('hidden');
             const backBtn = document.getElementById('map-back-btn');
             if (backBtn) {
                 backBtn.classList.add('hidden');
                 backBtn.classList.remove('flex');
             }
+            const logoArea = document.getElementById('map-logo-area');
+            if (logoArea) {
+                logoArea.classList.remove('hidden');
+            }
             
             document.getElementById('top-region-name').innerText = '全国';
         } else {
@@ -117,12 +121,16 @@ export class MapInterface {
                     breadcrumb.classList.remove('hidden');
                 }
                 
-                // 显示返回按钮
+                // 显示返回按钮，隐藏logo
                 const backBtn = document.getElementById('map-back-btn');
                 if (backBtn) {
                     backBtn.classList.remove('hidden');
                     backBtn.classList.add('flex');
                 }
+                const logoArea = document.getElementById('map-logo-area');
+                if (logoArea) {
+                    logoArea.classList.add('hidden');
+                }
                 
                 document.getElementById('top-region-name').innerText = provinceInfo.name;
             } else {