diff --git a/clinical-web/README.md b/clinical-web/README.md
index 4d02ee2..8ea799e 100644
--- a/clinical-web/README.md
+++ b/clinical-web/README.md
@@ -84,11 +84,14 @@ TanStack Vue Query、PDF 预览、报表图表、自动化测试和签字板适
 
 ## 当前状态
 
-已完成 Vite 基础初始化、路由、Pinia、原型主题 CSS 和医护端整体布局。当前所有业务 View 暂时保留文字占位，尚未接入真实后端。
+已完成 Vite 基础初始化、路由、Pinia、原型主题 CSS、登录页和医护端整体布局。当前所有业务 View 暂时保留文字占位，登录使用演示认证逻辑，尚未接入真实后端。
 
 ## 当前路由结构
 
 ```text
+公开页
+└─ /login                       登录页
+
 ClinicalLayout
 ├─ 工作台
 │  ├─ /workbench/home              首页
diff --git a/clinical-web/src/components/layout/Menu.vue b/clinical-web/src/components/layout/Menu.vue
index 9124a78..c4cc8bd 100644
--- a/clinical-web/src/components/layout/Menu.vue
+++ b/clinical-web/src/components/layout/Menu.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { RouterLink } from 'vue-router'
+import { RouterLink, useRouter } from 'vue-router'
 
 import { useAppStore } from '@/stores/app'
 
@@ -14,6 +14,7 @@ interface MenuGroup {
 }
 
 const appStore = useAppStore()
+const router = useRouter()
 
 const menuGroups: MenuGroup[] = [
   {
@@ -34,6 +35,11 @@ const menuGroups: MenuGroup[] = [
     ],
   },
 ]
+
+function handleLogout() {
+  appStore.logout()
+  void router.push('/login')
+}
 </script>
 
 <template>
@@ -84,7 +90,7 @@ const menuGroups: MenuGroup[] = [
         <strong>{{ appStore.userName }}</strong>
         <span>{{ appStore.department }}</span>
       </div>
-      <button class="menu-logout" type="button">退出</button>
+      <button class="menu-logout" type="button" @click="handleLogout">退出</button>
     </div>
   </aside>
 </template>
diff --git a/clinical-web/src/main.ts b/clinical-web/src/main.ts
index c1df6cc..47c5ee6 100644
--- a/clinical-web/src/main.ts
+++ b/clinical-web/src/main.ts
@@ -7,4 +7,7 @@ import App from './App.vue'
 import router from './router'
 import './styles/index.css'
 
-createApp(App).use(router).use(createPinia()).use(ElementPlus).mount('#app')
+const app = createApp(App)
+const pinia = createPinia()
+
+app.use(pinia).use(router).use(ElementPlus).mount('#app')
diff --git a/clinical-web/src/router/index.ts b/clinical-web/src/router/index.ts
index 6612d90..b8402f8 100644
--- a/clinical-web/src/router/index.ts
+++ b/clinical-web/src/router/index.ts
@@ -1,10 +1,12 @@
 import { createRouter, createWebHistory } from 'vue-router'
 
+import { useAppStore } from '@/stores/app'
 import ClinicalLayout from '@/layouts/ClinicalLayout.vue'
 import ConsentTasksView from '@/views/consent-tasks/ConsentTasksView.vue'
 import DashboardView from '@/views/dashboard/DashboardView.vue'
 import DocumentPermissionsView from '@/views/document-permissions/DocumentPermissionsView.vue'
 import DocumentsView from '@/views/documents/DocumentsView.vue'
+import LoginView from '@/views/auth/LoginView.vue'
 import ReportsView from '@/views/reports/ReportsView.vue'
 import SettingsView from '@/views/settings/SettingsView.vue'
 import UserPermissionsView from '@/views/users/UserPermissionsView.vue'
@@ -12,10 +14,18 @@ import UserPermissionsView from '@/views/users/UserPermissionsView.vue'
 const router = createRouter({
   history: createWebHistory(import.meta.env.BASE_URL),
   routes: [
+    {
+      path: '/login',
+      name: 'login',
+      component: LoginView,
+      meta: { title: '登录' },
+    },
     {
       path: '/',
+      name: 'clinical',
       component: ClinicalLayout,
       redirect: '/workbench/home',
+      meta: { requiresAuth: true },
       children: [
         {
           path: 'workbench',
@@ -23,11 +33,13 @@ const router = createRouter({
           children: [
             {
               path: 'home',
+              name: 'workbench-home',
               component: DashboardView,
               meta: { title: '首页', group: '工作台' },
             },
             {
               path: 'signing',
+              name: 'workbench-signing',
               component: ConsentTasksView,
               meta: { title: '签署工作台', group: '工作台' },
             },
@@ -39,26 +51,31 @@ const router = createRouter({
           children: [
             {
               path: 'documents',
+              name: 'management-documents',
               component: DocumentsView,
               meta: { title: '文档库管理', group: '管理' },
             },
             {
               path: 'reports',
+              name: 'management-reports',
               component: ReportsView,
               meta: { title: '报表分析', group: '管理' },
             },
             {
               path: 'users',
+              name: 'management-users',
               component: UserPermissionsView,
               meta: { title: '用户与权限', group: '管理' },
             },
             {
               path: 'document-permissions',
+              name: 'management-document-permissions',
               component: DocumentPermissionsView,
               meta: { title: '文档权限', group: '管理' },
             },
             {
               path: 'settings',
+              name: 'management-settings',
               component: SettingsView,
               meta: { title: '系统设置', group: '管理' },
             },
@@ -75,4 +92,21 @@ const router = createRouter({
   ],
 })
 
+router.beforeEach((to) => {
+  const appStore = useAppStore()
+
+  if (to.name === 'login' && appStore.isLoggedIn) {
+    return { name: 'workbench-home' }
+  }
+
+  if (to.meta.requiresAuth && !appStore.isLoggedIn) {
+    return {
+      name: 'login',
+      query: { redirect: to.fullPath },
+    }
+  }
+
+  return true
+})
+
 export default router
diff --git a/clinical-web/src/stores/app.ts b/clinical-web/src/stores/app.ts
index 525440f..c4e5c86 100644
--- a/clinical-web/src/stores/app.ts
+++ b/clinical-web/src/stores/app.ts
@@ -2,8 +2,18 @@ import { defineStore } from 'pinia'
 
 export const useAppStore = defineStore('app', {
   state: () => ({
+    isLoggedIn: false,
     userName: '张文静',
     department: '医务管理 · 主任医师',
     environment: '原型演示环境',
   }),
+  actions: {
+    login(userName: string) {
+      this.userName = userName || '张文静'
+      this.isLoggedIn = true
+    },
+    logout() {
+      this.isLoggedIn = false
+    },
+  },
 })
diff --git a/clinical-web/src/styles/index.css b/clinical-web/src/styles/index.css
index 1873243..27ebd9c 100644
--- a/clinical-web/src/styles/index.css
+++ b/clinical-web/src/styles/index.css
@@ -365,3 +365,160 @@ a {
     padding: 16px;
   }
 }
+
+/* 原型登录页 */
+.login-page {
+  position: fixed;
+  inset: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: var(--login-gradient);
+}
+
+.login-card {
+  width: 380px;
+  padding: 38px 36px;
+  background: #fff;
+  border-radius: 14px;
+  box-shadow: var(--sh-login);
+}
+
+.login-brand {
+  display: flex;
+  gap: 12px;
+  align-items: center;
+  justify-content: center;
+  margin-bottom: 8px;
+}
+
+.login-brand-icon {
+  display: grid;
+  width: 46px;
+  height: 46px;
+  place-items: center;
+  border-radius: 12px;
+  background: linear-gradient(135deg, var(--brand), #18a0c0);
+}
+
+.login-brand h1 {
+  margin: 0;
+  color: var(--ink);
+  font-size: 22px;
+  letter-spacing: 1px;
+}
+
+.login-brand p {
+  margin: 2px 0 0;
+  color: #8aa7b3;
+  font-size: 11px;
+  letter-spacing: 2px;
+}
+
+.login-subtitle {
+  margin: 0 0 26px;
+  color: var(--mut);
+  font-size: 12px;
+  text-align: center;
+}
+
+.login-field {
+  margin-bottom: 14px;
+}
+
+.login-field label {
+  display: block;
+  margin-bottom: 6px;
+  color: var(--mut);
+  font-size: 12px;
+}
+
+.login-field input {
+  width: 100%;
+  padding: 7px 10px;
+  color: var(--ink);
+  font-size: 13px;
+  background: #fff;
+  border: 1px solid var(--line);
+  border-radius: 6px;
+  outline: none;
+}
+
+.login-field input:focus {
+  border-color: var(--brand);
+}
+
+.login-captcha-row {
+  display: flex;
+  gap: 8px;
+  align-items: center;
+}
+
+.login-captcha-row input {
+  flex: 1;
+}
+
+.login-captcha-image {
+  flex-shrink: 0;
+  padding: 8px 14px;
+  color: #5c7d8a;
+  font-size: 13px;
+  font-style: italic;
+  font-weight: 700;
+  letter-spacing: 6px;
+  user-select: none;
+  background: linear-gradient(120deg, #dfeef3, #c8dfe8);
+  border-radius: 6px;
+}
+
+.login-error {
+  margin: -4px 0 10px;
+  color: var(--err);
+  font-size: 12px;
+}
+
+.login-submit {
+  width: 100%;
+  margin-top: 10px;
+  padding: 10px;
+  color: #fff;
+  font-size: 13px;
+  font-weight: 700;
+  background: var(--brand);
+  border-radius: 7px;
+}
+
+.login-submit:hover {
+  background: var(--brand-d);
+}
+
+.login-tip {
+  margin: 16px 0 0;
+  padding: 8px;
+  color: var(--mut);
+  font-size: 12px;
+  text-align: center;
+  background: var(--brand-l);
+  border-radius: 8px;
+}
+
+.login-footer {
+  position: absolute;
+  bottom: 18px;
+  width: 100%;
+  margin: 0;
+  color: rgb(255 255 255 / 55%);
+  font-size: 12px;
+  text-align: center;
+}
+
+@media (max-width: 520px) {
+  body {
+    min-width: 0;
+  }
+
+  .login-card {
+    width: calc(100% - 32px);
+    padding: 32px 24px;
+  }
+}
diff --git a/clinical-web/src/styles/theme.css b/clinical-web/src/styles/theme.css
index 520a2e7..2dd1283 100644
--- a/clinical-web/src/styles/theme.css
+++ b/clinical-web/src/styles/theme.css
@@ -2,6 +2,7 @@
   --brand: #0e6e8c;
   --brand-d: #0a4f66;
   --brand-l: #e3f0f4;
+  --brand-m: #1487a5;
   --side: #0a3d51;
   --bg: #f1f5f7;
   --card: #ffffff;
@@ -20,6 +21,8 @@
   --sh: 0 2px 10px rgb(13 62 81 / 7%);
   --sh-hover: 0 6px 20px rgb(14 110 140 / 18%);
   --sh-modal: 0 20px 60px rgb(0 0 0 / 30%);
+  --sh-login: 0 20px 60px rgb(0 0 0 / 30%);
+  --login-gradient: linear-gradient(135deg, #0a3d51 0%, var(--brand) 55%, var(--brand-m) 100%);
   --font-sans:
     'Microsoft YaHei', 'PingFang SC', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI',
     sans-serif;
diff --git a/clinical-web/src/views/auth/LoginView.vue b/clinical-web/src/views/auth/LoginView.vue
new file mode 100644
index 0000000..dc75414
--- /dev/null
+++ b/clinical-web/src/views/auth/LoginView.vue
@@ -0,0 +1,113 @@
+<script setup lang="ts">
+import { ref } from 'vue'
+import { useRoute, useRouter } from 'vue-router'
+
+import { useAppStore } from '@/stores/app'
+
+const route = useRoute()
+const router = useRouter()
+const appStore = useAppStore()
+
+const username = ref('zhangwj')
+const password = ref('******')
+const captcha = ref('8362')
+const errorMessage = ref('')
+const captchaCode = '8362'
+
+function getRedirectPath() {
+  const redirect = route.query.redirect
+  return typeof redirect === 'string' && redirect.startsWith('/') ? redirect : '/workbench/home'
+}
+
+function handleLogin() {
+  if (!username.value.trim() || !password.value.trim() || !captcha.value.trim()) {
+    errorMessage.value = '请输入完整的账号、密码和验证码'
+    return
+  }
+
+  if (captcha.value.trim() !== captchaCode) {
+    errorMessage.value = '验证码错误，请重新输入'
+    return
+  }
+
+  errorMessage.value = ''
+  appStore.login(username.value.trim())
+  void router.replace(getRedirectPath())
+}
+</script>
+
+<template>
+  <main class="login-page">
+    <form class="login-card" novalidate @submit.prevent="handleLogin">
+      <div class="login-brand">
+        <div class="login-brand-icon" aria-hidden="true">
+          <svg width="26" height="26" viewBox="0 0 24 24" fill="none">
+            <path
+              d="M14 3v5h5M14 3H7a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h10a2 2 0 0 0 2-2V8l-5-5z"
+              stroke="#fff"
+              stroke-width="1.7"
+              stroke-linejoin="round"
+            />
+            <path
+              d="m9 13.5 2.5 2.5 4-4.5"
+              stroke="#fff"
+              stroke-width="1.7"
+              stroke-linecap="round"
+              stroke-linejoin="round"
+            />
+          </svg>
+        </div>
+        <div>
+          <h1>医签通</h1>
+          <p>MEDISIGN · 患者电子签系统</p>
+        </div>
+      </div>
+
+      <p class="login-subtitle">安全留痕 · 高效签署 · 医患无忧</p>
+
+      <div class="login-field">
+        <label for="login-username">账号</label>
+        <input
+          id="login-username"
+          v-model="username"
+          type="text"
+          autocomplete="username"
+          placeholder="请输入工号 / 账号"
+        />
+      </div>
+
+      <div class="login-field">
+        <label for="login-password">密码</label>
+        <input
+          id="login-password"
+          v-model="password"
+          type="password"
+          autocomplete="current-password"
+          placeholder="请输入密码"
+        />
+      </div>
+
+      <div class="login-field">
+        <label for="login-captcha">验证码</label>
+        <div class="login-captcha-row">
+          <input
+            id="login-captcha"
+            v-model="captcha"
+            type="text"
+            inputmode="numeric"
+            autocomplete="one-time-code"
+            placeholder="验证码"
+          />
+          <span class="login-captcha-image" aria-label="验证码">{{ captchaCode }}</span>
+        </div>
+      </div>
+
+      <p v-if="errorMessage" class="login-error" role="alert">{{ errorMessage }}</p>
+
+      <button class="login-submit" type="submit">登 录</button>
+      <p class="login-tip">原型演示：任意账号密码均可登录</p>
+    </form>
+
+    <p class="login-footer">© 2026 医签通 MEDISIGN · 患者电子签署系统 V1.1 原型</p>
+  </main>
+</template>