diff --git a/src/components/Shell.tsx b/src/components/Shell.tsx
new file mode 100644
index 0000000..5951931
--- /dev/null
+++ b/src/components/Shell.tsx
@@ -0,0 +1,84 @@
+import { useState, useEffect, type ComponentType } from 'react';
+
+export interface ModuleConfig {
+  id: string;
+  label: string;
+  icon: ComponentType<{ size?: number; className?: string }>;
+  component: ComponentType;
+}
+
+function getHashModule(modules: ModuleConfig[]): string {
+  const hash = window.location.hash.slice(1);
+  return modules.some((m) => m.id === hash) ? hash : modules[0]?.id ?? '';
+}
+
+export function Shell({ modules }: { modules: ModuleConfig[] }) {
+  const [activeModule, setActiveModule] = useState(() => getHashModule(modules));
+
+  useEffect(() => {
+    const onHashChange = () => setActiveModule(getHashModule(modules));
+    window.addEventListener('hashchange', onHashChange);
+    return () => window.removeEventListener('hashchange', onHashChange);
+  }, [modules]);
+
+  useEffect(() => {
+    if (!window.location.hash) {
+      window.location.hash = modules[0]?.id ?? '';
+    }
+  }, [modules]);
+
+  const switchModule = (id: string) => {
+    window.location.hash = id;
+  };
+
+  const ActiveComponent = modules.find((m) => m.id === activeModule)?.component ?? modules[0]?.component;
+
+  return (
+    <div className="flex min-h-screen">
+      {/* Web 侧边栏 (md 及以上) */}
+      <nav className="hidden md:flex flex-col items-center w-16 bg-white border-r border-gray-100 fixed top-0 left-0 h-full z-50 py-6 gap-2">
+        {modules.map((m) => {
+          const Icon = m.icon;
+          const isActive = m.id === activeModule;
+          return (
+            <button
+              key={m.id}
+              onClick={() => switchModule(m.id)}
+              className={`flex flex-col items-center justify-center w-14 h-14 rounded-xl transition-colors ${
+                isActive
+                  ? 'bg-blue-50 text-blue-600'
+                  : 'text-gray-400 hover:text-gray-600 hover:bg-gray-50'
+              }`}
+            >
+              <Icon size={22} />
+              <span className="text-[10px] mt-1 leading-tight">{m.label}</span>
+            </button>
+          );
+        })}
+      </nav>
+
+      {/* 内容区 */}
+      <main className="flex-1 md:ml-16 pb-16 md:pb-0">
+        {ActiveComponent && <ActiveComponent />}
+      </main>
+
+      {/* 移动端底部导航 (md 以下) */}
+      <nav className="fixed bottom-0 left-0 right-0 bg-white border-t border-gray-100 p-2 flex justify-around items-center md:hidden z-50">
+        {modules.map((m) => {
+          const Icon = m.icon;
+          const isActive = m.id === activeModule;
+          return (
+            <button
+              key={m.id}
+              onClick={() => switchModule(m.id)}
+              className={`flex flex-col items-center ${isActive ? 'text-blue-600' : 'text-gray-400'}`}
+            >
+              <Icon size={20} />
+              <span className="text-[10px] mt-1">{m.label}</span>
+            </button>
+          );
+        })}
+      </nav>
+    </div>
+  );
+}