diff --git a/backend/app/api/v1/auth.py b/backend/app/api/v1/auth.py
index 4a447132..a25cb3cc 100644
--- a/backend/app/api/v1/auth.py
+++ b/backend/app/api/v1/auth.py
@@ -42,6 +42,12 @@ class ExtendResponse(BaseModel):
 router = APIRouter()
 AVATAR_ROOT = Path(__file__).resolve().parent.parent.parent / "uploads" / "avatars"
 AVATAR_ROOT.mkdir(parents=True, exist_ok=True)
+AVATAR_ALLOWED_CONTENT_TYPES = {
+    "image/png": ".png",
+    "image/jpeg": ".jpg",
+    "image/gif": ".gif",
+    "image/webp": ".webp",
+}
 
 
 def issue_user_token(db_user) -> Token:
@@ -215,10 +221,15 @@ async def upload_avatar(
     current_user=Depends(get_current_user),
     db: AsyncSession = Depends(get_db_session),
 ) -> UserRead:
+    ext = AVATAR_ALLOWED_CONTENT_TYPES.get(file.content_type or "")
+    if not ext:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="头像仅支持图片格式",
+        )
     AVATAR_ROOT.mkdir(parents=True, exist_ok=True)
     user_dir = AVATAR_ROOT / str(current_user.id)
     user_dir.mkdir(parents=True, exist_ok=True)
-    ext = Path(file.filename).suffix or ".png"
     filename = f"{uuid.uuid4()}{ext}"
     dest = user_dir / filename
     content = await file.read()
diff --git a/backend/tests/test_registration.py b/backend/tests/test_registration.py
index 51f37e7b..ee604b63 100644
--- a/backend/tests/test_registration.py
+++ b/backend/tests/test_registration.py
@@ -274,6 +274,27 @@ async def test_dev_login_allows_plaintext_only_in_development(client_and_db):
     assert resp.json()["access_token"]
 
 
+@pytest.mark.asyncio
+async def test_avatar_upload_rejects_non_image_files(client_and_db):
+    client, _ = client_and_db
+    original_env = settings.ENV
+    settings.ENV = "development"
+    try:
+        login_resp = await client.post("/api/v1/auth/dev-login", json={"email": "admin@test.com", "password": "admin123"})
+    finally:
+        settings.ENV = original_env
+
+    token = login_resp.json()["access_token"]
+    resp = await client.post(
+        "/api/v1/auth/me/avatar",
+        files={"file": ("avatar.txt", b"not an image", "text/plain")},
+        headers={"Authorization": f"Bearer {token}"},
+    )
+
+    assert resp.status_code == 400
+    assert resp.json()["detail"] == "头像仅支持图片格式"
+
+
 @pytest.mark.asyncio
 async def test_dev_login_is_disabled_outside_development(client_and_db):
     client, _ = client_and_db
@@ -357,4 +378,3 @@ async def test_login_challenge_cannot_be_reused(client_and_db):
 
     assert first.status_code == 200
     assert second.status_code == 401
-
diff --git a/frontend/src/components/Layout.vue b/frontend/src/components/Layout.vue
index ed876a9e..31bcb742 100644
--- a/frontend/src/components/Layout.vue
+++ b/frontend/src/components/Layout.vue
@@ -204,6 +204,25 @@
       </el-main>
     </el-container>
   </el-container>
+
+  <el-dialog
+    v-model="profileDialogVisible"
+    class="profile-settings-dialog"
+    :show-close="false"
+    :close-on-click-modal="false"
+    :close-on-press-escape="false"
+    :before-close="beforeProfileDialogClose"
+    width="980px"
+    align-center
+    destroy-on-close
+    @closed="profileDialogDirty = false"
+  >
+    <ProfileSettings
+      @close-request="requestProfileDialogClose"
+      @dirty-change="profileDialogDirty = $event"
+      @saved="profileDialogVisible = false"
+    />
+  </el-dialog>
 </template>
 
 <script setup lang="ts">
@@ -221,6 +240,7 @@ import {
 import { ElMessage, ElMessageBox } from "element-plus";
 import { getProjectRoutePermission, hasProjectPermission, projectRouteLandingPaths } from "../utils/projectRoutePermissions";
 import { forceLogout, LOGOUT_REASON_MANUAL } from "../session/sessionManager";
+import ProfileSettings from "../views/ProfileSettings.vue";
 
 const auth = useAuthStore();
 const study = useStudyStore();
@@ -235,6 +255,8 @@ const canAccessProjectPath = (path: string) =>
 const canAccessAnyProjectPath = (paths: string[]) => paths.some((path) => canAccessProjectPath(path));
 const hasAnyProjectModuleAccess = computed(() => canAccessAnyProjectPath(projectRouteLandingPaths));
 const loggingOut = ref(false);
+const profileDialogVisible = ref(false);
+const profileDialogDirty = ref(false);
 
 /* 动态设置 body 上的侧边栏宽度 CSS 变量，用于全局弹窗定位偏移 */
 const hasSidebar = computed(() => isAdmin.value || !!study.currentStudy);
@@ -480,7 +502,33 @@ const onCommand = (cmd: string) => {
   if (cmd === "logout") {
     onLogout();
   } else if (cmd === "profile") {
-    router.push("/profile");
+    profileDialogVisible.value = true;
+  }
+};
+
+const confirmDiscardProfileChanges = async () => {
+  if (!profileDialogDirty.value) return true;
+  const confirmed = await ElMessageBox.confirm(
+    "当前修改尚未保存，关闭后将丢失这些改动。",
+    "确认关闭个人中心",
+    {
+      type: "warning",
+      confirmButtonText: "关闭",
+      cancelButtonText: "继续编辑",
+    }
+  ).catch(() => false);
+  return Boolean(confirmed);
+};
+
+const requestProfileDialogClose = async () => {
+  if (await confirmDiscardProfileChanges()) {
+    profileDialogVisible.value = false;
+  }
+};
+
+const beforeProfileDialogClose = async (done: () => void) => {
+  if (await confirmDiscardProfileChanges()) {
+    done();
   }
 };
 </script>
@@ -931,4 +979,18 @@ const onCommand = (cmd: string) => {
   background-color: var(--el-color-primary-light-9);
   font-weight: 600;
 }
+
+:global(.profile-settings-dialog) {
+  border-radius: 16px;
+  overflow: hidden;
+  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.26);
+}
+
+:global(.profile-settings-dialog .el-dialog__header) {
+  display: none;
+}
+
+:global(.profile-settings-dialog .el-dialog__body) {
+  padding: 0;
+}
 </style>
diff --git a/frontend/src/components/LayoutBreadcrumb.test.ts b/frontend/src/components/LayoutBreadcrumb.test.ts
index 6fb0f53c..26e15a71 100644
--- a/frontend/src/components/LayoutBreadcrumb.test.ts
+++ b/frontend/src/components/LayoutBreadcrumb.test.ts
@@ -52,4 +52,19 @@ describe("Layout breadcrumbs", () => {
     expect(source).toContain("forceLogout(LOGOUT_REASON_MANUAL)");
     expect(source).toContain('loggingOut ? "正在退出..." : TEXT.menu.logout');
   });
+
+  it("opens profile settings as a desktop-style dialog instead of navigating away", () => {
+    const source = readLayout();
+
+    expect(source).toContain('v-model="profileDialogVisible"');
+    expect(source).toContain('class="profile-settings-dialog"');
+    expect(source).toContain(':close-on-click-modal="false"');
+    expect(source).toContain(':close-on-press-escape="false"');
+    expect(source).toContain('@close-request="requestProfileDialogClose"');
+    expect(source).toContain('@dirty-change="profileDialogDirty = $event"');
+    expect(source).toContain('@saved="profileDialogVisible = false"');
+    expect(source).toContain("profileDialogVisible.value = true");
+    expect(source).toContain("confirmDiscardProfileChanges");
+    expect(source).not.toContain('router.push("/profile")');
+  });
 });
diff --git a/frontend/src/locales/zh-CN.ts b/frontend/src/locales/zh-CN.ts
index 0a24648c..647d4bcd 100644
--- a/frontend/src/locales/zh-CN.ts
+++ b/frontend/src/locales/zh-CN.ts
@@ -950,8 +950,7 @@ export const TEXT = {
       default: "当前角色无权执行该操作",
     },
     profile: {
-      title: "个人设置",
-      subtitle: "更新个人信息或修改登录密码",
+      title: "个人中心",
       uploadAvatar: "上传头像",
       currentPassword: "当前密码",
       currentPasswordHint: "修改密码时必填",
@@ -965,6 +964,7 @@ export const TEXT = {
       updateSuccess: "已更新",
       updateFailed: "更新失败",
       avatarUpdated: "头像已更新",
+      avatarTypeInvalid: "头像仅支持图片格式",
       avatarUploadFailed: "头像上传失败",
     },
   },
diff --git a/frontend/src/views/ProfileSettings.test.ts b/frontend/src/views/ProfileSettings.test.ts
index 5dbc61d8..36b6c710 100644
--- a/frontend/src/views/ProfileSettings.test.ts
+++ b/frontend/src/views/ProfileSettings.test.ts
@@ -8,9 +8,40 @@ describe("profile settings autocomplete", () => {
   it("disables browser autofill for profile name, department, and current password", () => {
     const source = readProfileView();
 
-    expect(source).toContain('<el-form ref="formRef" :model="form" :rules="rules" label-width="120px" class="form" autocomplete="off">');
+    expect(source).toContain('<el-form ref="formRef" :model="form" :rules="rules" label-width="112px" class="form" autocomplete="off">');
     expect(source).toContain('autocomplete="off"');
     expect(source).toContain('autocomplete="new-password"');
     expect(source).toContain('name="ctms-profile-current-password"');
   });
 });
+
+describe("profile settings layout", () => {
+  it("uses a settings-window layout, grouped sections, and aligned actions", () => {
+    const source = readProfileView();
+
+    expect(source).not.toContain("<el-card");
+    expect(source).toContain('class="profile-layout"');
+    expect(source).toContain('class="avatar-panel"');
+    expect(source).toContain('aria-label="关闭个人中心"');
+    expect(source).toContain("@click=\"emit('close-request')\"");
+    expect(source).toContain('saved: []');
+    expect(source).toContain('emit("saved")');
+    expect(source).toContain('class="form-section"');
+    expect(source).toContain('class="form-section form-section--password"');
+    expect(source).toContain("grid-template-columns: 260px minmax(0, 1fr);");
+    expect(source).toContain("min-height: 620px;");
+    expect(source).toContain("padding-left: 112px;");
+  });
+});
+
+describe("profile avatar upload", () => {
+  it("limits avatar uploads to supported image MIME types", () => {
+    const source = readProfileView();
+
+    expect(source).toContain('accept="image/png,image/jpeg,image/gif,image/webp"');
+    expect(source).toContain(':before-upload="beforeAvatarUpload"');
+    expect(source).toContain('const avatarAcceptedTypes = new Set(["image/png", "image/jpeg", "image/gif", "image/webp"])');
+    expect(source).toContain("avatarAcceptedTypes.has(file.type)");
+    expect(source).toContain("TEXT.modules.profile.avatarTypeInvalid");
+  });
+});
diff --git a/frontend/src/views/ProfileSettings.vue b/frontend/src/views/ProfileSettings.vue
index d2806cad..0ee74aa4 100644
--- a/frontend/src/views/ProfileSettings.vue
+++ b/frontend/src/views/ProfileSettings.vue
@@ -1,70 +1,103 @@
 <template>
   <div class="page">
-    <el-card class="unified-shell">
-      <h3 class="title">{{ TEXT.modules.profile.title }}</h3>
-      <p class="subtitle">{{ TEXT.modules.profile.subtitle }}</p>
-      <el-form ref="formRef" :model="form" :rules="rules" label-width="120px" class="form" autocomplete="off">
-        <el-form-item :label="TEXT.common.fields.avatar">
-          <div class="avatar-row">
-            <el-avatar :size="64" :src="avatarPreview" :alt="form.full_name || form.email">
-              {{ form.full_name?.charAt(0)?.toUpperCase() || form.email?.charAt(0)?.toUpperCase() }}
-            </el-avatar>
-            <el-upload
-              class="avatar-uploader"
-              :show-file-list="false"
-              action="/api/v1/auth/me/avatar"
-              name="file"
-              :headers="uploadHeaders"
-              :on-success="onAvatarUploaded"
-              :on-error="onAvatarError"
-            >
-              <el-button>{{ TEXT.modules.profile.uploadAvatar }}</el-button>
-            </el-upload>
+    <div class="profile-layout">
+      <aside class="profile-aside">
+        <div class="avatar-panel">
+          <el-avatar :size="88" :src="avatarPreview" :alt="form.full_name || form.email" class="profile-avatar">
+            {{ profileInitial }}
+          </el-avatar>
+          <div class="avatar-meta">
+            <div class="avatar-name">{{ form.full_name || TEXT.modules.profile.title }}</div>
+            <div class="avatar-email">{{ form.email }}</div>
           </div>
-        </el-form-item>
-        <el-form-item :label="TEXT.common.fields.email">
-          <el-input v-model="form.email" disabled />
-        </el-form-item>
-        <el-form-item :label="TEXT.common.fields.name" prop="full_name">
-          <el-input v-model="form.full_name" autocomplete="off" :placeholder="TEXT.common.placeholders.input + TEXT.common.fields.name" />
-        </el-form-item>
-        <el-form-item :label="TEXT.common.fields.clinicalDepartment" prop="clinical_department">
-          <el-input v-model="form.clinical_department" autocomplete="off" :placeholder="TEXT.common.placeholders.input + TEXT.common.fields.clinicalDepartment" />
-        </el-form-item>
-        <el-divider />
-        <el-form-item :label="TEXT.modules.profile.currentPassword" prop="current_password">
-          <el-input
-            v-model="form.current_password"
-            type="password"
-            show-password
-            autocomplete="new-password"
-            name="ctms-profile-current-password"
-            :placeholder="TEXT.modules.profile.currentPasswordHint"
-          />
-        </el-form-item>
-        <el-form-item :label="TEXT.modules.profile.newPassword" prop="password">
-          <el-input v-model="form.password" type="password" show-password :placeholder="TEXT.modules.profile.newPasswordHint" />
-        </el-form-item>
-        <el-form-item :label="TEXT.modules.profile.confirmPassword" prop="confirmPassword">
-          <el-input v-model="form.confirmPassword" type="password" show-password :placeholder="TEXT.modules.profile.confirmPasswordHint" />
-        </el-form-item>
-        <div class="actions">
-          <el-button type="primary" :loading="submitting" @click="onSubmit">{{ TEXT.common.actions.save }}</el-button>
+          <el-upload
+            class="avatar-uploader"
+            :show-file-list="false"
+            accept="image/png,image/jpeg,image/gif,image/webp"
+            action="/api/v1/auth/me/avatar"
+            name="file"
+            :headers="uploadHeaders"
+            :before-upload="beforeAvatarUpload"
+            :on-success="onAvatarUploaded"
+            :on-error="onAvatarError"
+          >
+            <el-button :icon="Upload" class="upload-button">{{ TEXT.modules.profile.uploadAvatar }}</el-button>
+          </el-upload>
         </div>
-      </el-form>
-    </el-card>
+      </aside>
+
+      <main class="profile-main">
+        <header class="profile-header">
+          <div>
+            <h3 class="title">{{ TEXT.modules.profile.title }}</h3>
+          </div>
+          <el-button class="dialog-close" text :icon="Close" aria-label="关闭个人中心" @click="emit('close-request')" />
+        </header>
+
+        <el-form ref="formRef" :model="form" :rules="rules" label-width="112px" class="form" autocomplete="off">
+          <section class="form-section">
+            <div class="section-heading">
+              <span class="section-kicker">Account</span>
+              <h4>基本信息</h4>
+            </div>
+            <el-form-item :label="TEXT.common.fields.email">
+              <el-input v-model="form.email" disabled />
+            </el-form-item>
+            <el-form-item :label="TEXT.common.fields.name" prop="full_name">
+              <el-input v-model="form.full_name" autocomplete="off" :placeholder="TEXT.common.placeholders.input + TEXT.common.fields.name" />
+            </el-form-item>
+            <el-form-item :label="TEXT.common.fields.clinicalDepartment" prop="clinical_department">
+              <el-input v-model="form.clinical_department" autocomplete="off" :placeholder="TEXT.common.placeholders.input + TEXT.common.fields.clinicalDepartment" />
+            </el-form-item>
+          </section>
+
+          <section class="form-section form-section--password">
+            <div class="section-heading">
+              <span class="section-kicker">Security</span>
+              <h4>修改密码</h4>
+            </div>
+            <el-form-item :label="TEXT.modules.profile.currentPassword" prop="current_password">
+              <el-input
+                v-model="form.current_password"
+                type="password"
+                show-password
+                autocomplete="new-password"
+                name="ctms-profile-current-password"
+                :placeholder="TEXT.modules.profile.currentPasswordHint"
+              />
+            </el-form-item>
+            <el-form-item :label="TEXT.modules.profile.newPassword" prop="password">
+              <el-input v-model="form.password" type="password" show-password :placeholder="TEXT.modules.profile.newPasswordHint" />
+            </el-form-item>
+            <el-form-item :label="TEXT.modules.profile.confirmPassword" prop="confirmPassword">
+              <el-input v-model="form.confirmPassword" type="password" show-password :placeholder="TEXT.modules.profile.confirmPasswordHint" />
+            </el-form-item>
+          </section>
+
+          <div class="actions">
+            <el-button type="primary" :loading="submitting" @click="onSubmit">{{ TEXT.common.actions.save }}</el-button>
+          </div>
+        </el-form>
+      </main>
+    </div>
   </div>
 </template>
 
 <script setup lang="ts">
-import { computed, onMounted, reactive, ref } from "vue";
-import type { FormInstance, FormRules } from "element-plus";
+import { computed, onMounted, reactive, ref, watch } from "vue";
+import type { FormInstance, FormRules, UploadRawFile } from "element-plus";
 import { ElMessage } from "element-plus";
+import { Close, Upload } from "@element-plus/icons-vue";
 import { updateProfile, fetchMe } from "../api/auth";
 import { useAuthStore } from "../store/auth";
 import { getToken } from "../utils/auth";
 import { TEXT, requiredMessage } from "../locales";
 
+const emit = defineEmits<{
+  "close-request": [];
+  "dirty-change": [dirty: boolean];
+  saved: [];
+}>();
 const auth = useAuthStore();
 const formRef = ref<FormInstance>();
 const submitting = ref(false);
@@ -76,10 +109,22 @@ const form = reactive({
   password: "",
   confirmPassword: "",
 });
+const savedProfile = ref({
+  full_name: "",
+  clinical_department: "",
+});
 const avatarPreview = ref<string | undefined>();
 const uploadHeaders = computed<Record<string, string>>(() => ({
   Authorization: `Bearer ${getToken() || ""}`,
 }));
+const profileInitial = computed(() => (form.full_name?.charAt(0) || form.email?.charAt(0) || "?").toUpperCase());
+const avatarAcceptedTypes = new Set(["image/png", "image/jpeg", "image/gif", "image/webp"]);
+const hasUnsavedChanges = computed(
+  () =>
+    form.full_name !== savedProfile.value.full_name ||
+    form.clinical_department !== savedProfile.value.clinical_department ||
+    Boolean(form.current_password || form.password || form.confirmPassword)
+);
 
 const rules: FormRules<typeof form> = {
   full_name: [{ required: true, message: requiredMessage(TEXT.common.fields.name), trigger: "blur" }],
@@ -128,6 +173,10 @@ const loadProfile = async () => {
   form.email = data.email;
   form.full_name = data.full_name;
   form.clinical_department = data.clinical_department;
+  savedProfile.value = {
+    full_name: data.full_name,
+    clinical_department: data.clinical_department,
+  };
   avatarPreview.value = data.avatar_url || undefined;
 };
 
@@ -148,7 +197,12 @@ const onSubmit = async () => {
       form.current_password = "";
       form.password = "";
       form.confirmPassword = "";
+      savedProfile.value = {
+        full_name: form.full_name,
+        clinical_department: form.clinical_department,
+      };
       avatarPreview.value = auth.user?.avatar_url || avatarPreview.value;
+      emit("saved");
     } catch (error: any) {
       ElMessage.error(error?.response?.data?.message || TEXT.modules.profile.updateFailed);
     } finally {
@@ -163,6 +217,12 @@ const onAvatarUploaded = async () => {
   ElMessage.success(TEXT.modules.profile.avatarUpdated);
 };
 
+const beforeAvatarUpload = (file: UploadRawFile) => {
+  if (avatarAcceptedTypes.has(file.type)) return true;
+  ElMessage.error(TEXT.modules.profile.avatarTypeInvalid);
+  return false;
+};
+
 const onAvatarError = (err: any) => {
   ElMessage.error(err?.response?.data?.message || TEXT.modules.profile.avatarUploadFailed);
 };
@@ -170,24 +230,205 @@ const onAvatarError = (err: any) => {
 onMounted(() => {
   loadProfile();
 });
+
+watch(hasUnsavedChanges, (dirty) => emit("dirty-change", dirty), { immediate: true });
 </script>
 
 <style scoped>
 .page {
-  padding: 16px;
+  background: #fff;
 }
+
+.profile-layout {
+  display: grid;
+  grid-template-columns: 260px minmax(0, 1fr);
+  min-height: 620px;
+}
+
+.profile-aside {
+  padding: 48px 32px;
+  border-right: 1px solid #e5ebf2;
+  background: linear-gradient(180deg, #f8fbfd 0%, #f1f5f9 100%);
+}
+
+.avatar-panel {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  text-align: center;
+}
+
+.profile-avatar {
+  --el-avatar-bg-color: #64748b;
+  color: #fff;
+  font-size: 30px;
+  font-weight: 700;
+  border: 4px solid #fff;
+  box-shadow: 0 12px 30px rgba(51, 65, 85, 0.16);
+}
+
+.avatar-meta {
+  width: 100%;
+  margin-top: 18px;
+}
+
+.avatar-name {
+  overflow: hidden;
+  color: #172033;
+  font-size: 17px;
+  font-weight: 700;
+  line-height: 1.35;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.avatar-email {
+  overflow: hidden;
+  margin-top: 6px;
+  color: #718096;
+  font-size: 12px;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.avatar-uploader {
+  margin-top: 22px;
+}
+
+.upload-button {
+  border-color: #cbd5e1;
+  color: #40566f;
+  font-weight: 600;
+}
+
+.profile-main {
+  padding: 42px 48px 36px;
+  background: #fff;
+}
+
+.profile-header {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 18px;
+  margin-bottom: 26px;
+}
+
+.dialog-close {
+  width: 32px;
+  height: 32px;
+  margin-top: -4px;
+  color: #718096;
+}
+
 .title {
   margin: 0;
+  color: #172033;
+  font-size: 24px;
+  font-weight: 800;
+  line-height: 1.25;
 }
-.subtitle {
-  margin: 6px 0 16px;
-  color: #666;
-}
+
 .form {
-  max-width: 520px;
+  max-width: 620px;
 }
+
+.form-section {
+  padding-top: 2px;
+}
+
+.form-section--password {
+  margin-top: 26px;
+  padding-top: 28px;
+  border-top: 1px solid #e5ebf2;
+}
+
+.section-heading {
+  margin-bottom: 18px;
+  padding-left: 112px;
+}
+
+.section-kicker {
+  display: block;
+  color: #7f92ad;
+  font-size: 11px;
+  font-weight: 800;
+  letter-spacing: 0;
+  line-height: 1;
+  text-transform: uppercase;
+}
+
+.section-heading h4 {
+  margin: 6px 0 0;
+  color: #1f2a3d;
+  font-size: 15px;
+  font-weight: 800;
+  line-height: 1.4;
+}
+
+.form :deep(.el-form-item) {
+  margin-bottom: 20px;
+}
+
+.form :deep(.el-form-item__label) {
+  color: #6f83a3;
+  font-weight: 700;
+}
+
+.form :deep(.el-input__wrapper) {
+  min-height: 44px;
+  border-radius: 10px;
+  box-shadow: 0 0 0 1px #dfe6ee inset;
+}
+
+.form :deep(.el-input__wrapper.is-focus) {
+  box-shadow: 0 0 0 1px #3f8f6b inset, 0 0 0 3px rgba(63, 143, 107, 0.12);
+}
+
 .actions {
-  margin-top: 12px;
+  margin-top: 28px;
+  padding-left: 112px;
   text-align: right;
 }
+
+.actions :deep(.el-button) {
+  min-width: 96px;
+  min-height: 40px;
+  border-radius: 10px;
+  font-weight: 700;
+}
+
+@media (max-width: 900px) {
+  .profile-layout {
+    grid-template-columns: 1fr;
+  }
+
+  .profile-aside {
+    border-right: 0;
+    border-bottom: 1px solid #e5ebf2;
+  }
+
+  .profile-main {
+    padding: 32px 24px;
+  }
+}
+
+@media (max-width: 640px) {
+  .profile-main {
+    padding: 24px 18px;
+  }
+
+  .form {
+    max-width: none;
+  }
+
+  .section-heading,
+  .actions {
+    padding-left: 0;
+  }
+
+  .actions {
+    text-align: left;
+  }
+}
 </style>
diff --git a/frontend/src/views/admin/PermissionManagement.test.ts b/frontend/src/views/admin/PermissionManagement.test.ts
index f53a1243..c665620c 100644
--- a/frontend/src/views/admin/PermissionManagement.test.ts
+++ b/frontend/src/views/admin/PermissionManagement.test.ts
@@ -151,6 +151,13 @@ describe("permission management custom roles", () => {
     expect(source).not.toContain("project.members.manage");
   });
 
+  it("shows member names without avatar icons in the member management table", () => {
+    const source = readSource();
+
+    expect(source).not.toContain("member-avatar");
+    expect(source).not.toContain("memberInitial(row.full_name)");
+  });
+
   it("uses QA and CTA as preset project permission role keys", () => {
     const source = readSource();
 
diff --git a/frontend/src/views/admin/PermissionManagement.vue b/frontend/src/views/admin/PermissionManagement.vue
index 85418db5..d0f6099c 100644
--- a/frontend/src/views/admin/PermissionManagement.vue
+++ b/frontend/src/views/admin/PermissionManagement.vue
@@ -84,7 +84,6 @@
                   <el-table-column prop="full_name" label="姓名" min-width="140">
                     <template #default="{ row }">
                       <div class="member-name-cell">
-                        <span class="member-avatar">{{ (row.full_name || '?')[0] }}</span>
                         <span class="member-name">{{ row.full_name }}</span>
                       </div>
                     </template>
@@ -1782,21 +1781,6 @@ onMounted(async () => {
 .member-name-cell {
   display: flex;
   align-items: center;
-  gap: 10px;
-}
-
-.member-avatar {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  width: 32px;
-  height: 32px;
-  border-radius: 8px;
-  background: linear-gradient(135deg, #6366f1, #8b5cf6);
-  color: #fff;
-  font-size: 13px;
-  font-weight: 600;
-  flex-shrink: 0;
 }
 
 .member-name {
diff --git a/frontend/src/views/admin/Users.test.ts b/frontend/src/views/admin/Users.test.ts
index 226b7350..b72bb049 100644
--- a/frontend/src/views/admin/Users.test.ts
+++ b/frontend/src/views/admin/Users.test.ts
@@ -32,6 +32,14 @@ describe("Admin users table layout", () => {
     expect(viewSource).toContain("width: 28px;");
     expect(viewSource).toContain("gap: 4px;");
   });
+
+  it("shows names without avatar icons in the account management table", () => {
+    const viewSource = readUsersView();
+
+    expect(viewSource).not.toContain("user-avatar");
+    expect(viewSource).not.toContain("getInitials(scope.row.full_name)");
+    expect(viewSource).not.toContain("linear-gradient(135deg, #3f8f6b, #2d7a5a)");
+  });
 });
 
 describe("Admin users summary header", () => {
diff --git a/frontend/src/views/admin/Users.vue b/frontend/src/views/admin/Users.vue
index 03f23c1f..cdecea62 100644
--- a/frontend/src/views/admin/Users.vue
+++ b/frontend/src/views/admin/Users.vue
@@ -87,9 +87,6 @@
           <el-table-column :label="TEXT.common.fields.name" width="360">
             <template #default="scope">
               <div class="user-cell">
-                <div class="user-avatar" :class="'avatar--' + (scope.row.status || '').toLowerCase()">
-                  {{ getInitials(scope.row.full_name) }}
-                </div>
                 <div class="user-info">
                   <span class="user-name">{{ scope.row.full_name }}</span>
                   <span class="user-email">{{ scope.row.email }}</span>
@@ -195,13 +192,6 @@ const activeCount = computed(() => allUsers.value.filter(u => u.status === 'ACTI
 const pendingCount = computed(() => allUsers.value.filter(u => u.status === 'PENDING').length);
 const disabledCount = computed(() => allUsers.value.filter(u => u.status === 'DISABLED').length);
 
-const getInitials = (name: string) => {
-  if (!name) return '?';
-  const parts = name.trim().split(/\s+/);
-  if (parts.length >= 2) return (parts[0][0] + parts[1][0]).toUpperCase();
-  return name.slice(0, 2).toUpperCase();
-};
-
 const statusType = (status: string) => {
   switch (status) {
     case "ACTIVE": return "success";
@@ -487,37 +477,6 @@ onBeforeUnmount(() => {
 .user-cell {
   display: flex;
   align-items: center;
-  gap: 12px;
-}
-
-.user-avatar {
-  width: 36px;
-  height: 36px;
-  border-radius: 10px;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  font-size: 13px;
-  font-weight: 700;
-  color: #fff;
-  flex-shrink: 0;
-  background: var(--ctms-primary);
-}
-
-.user-avatar.avatar--active {
-  background: linear-gradient(135deg, #3f8f6b, #2d7a5a);
-}
-
-.user-avatar.avatar--pending {
-  background: linear-gradient(135deg, #c58b2a, #a87420);
-}
-
-.user-avatar.avatar--disabled {
-  background: linear-gradient(135deg, #94a3b8, #64748b);
-}
-
-.user-avatar.avatar--rejected {
-  background: linear-gradient(135deg, #c24b4b, #a83a3a);
 }
 
 .user-info {
diff --git a/frontend/src/views/ia/ProjectOverview.vue b/frontend/src/views/ia/ProjectOverview.vue
index 3f3fc11c..087f039b 100644
--- a/frontend/src/views/ia/ProjectOverview.vue
+++ b/frontend/src/views/ia/ProjectOverview.vue
@@ -382,8 +382,17 @@ watch(
 }
 
 .legend-dot.active {
-  border-color: var(--ctms-primary);
-  box-shadow: 0 0 0 2px rgba(63, 93, 117, 0.18);
+  position: relative;
+  border: 3px solid #2f5f86;
+  box-shadow: 0 0 0 3px rgba(47, 95, 134, 0.14);
+}
+
+.legend-dot.active::after {
+  content: "";
+  position: absolute;
+  inset: 2px;
+  border-radius: inherit;
+  background: #2f5f86;
 }
 
 .legend-dot.pending {
diff --git a/frontend/src/views/ia/project-overview/CenterProgressRow.vue b/frontend/src/views/ia/project-overview/CenterProgressRow.vue
index 828edfe4..08620c32 100644
--- a/frontend/src/views/ia/project-overview/CenterProgressRow.vue
+++ b/frontend/src/views/ia/project-overview/CenterProgressRow.vue
@@ -100,7 +100,7 @@ const connectorClass = (status: StageStatus) => `connector-${status.toLowerCase(
   align-items: flex-start;
   gap: 8px;
   overflow-x: auto;
-  padding-bottom: 4px;
+  padding: 10px 0 4px;
   width: 100%;
   min-width: 0;
 }
@@ -125,7 +125,7 @@ const connectorClass = (status: StageStatus) => `connector-${status.toLowerCase(
   height: 2px;
   background-color: var(--ctms-border-color);
   border-radius: 999px;
-  margin-top: 6px;
+  margin-top: 8px;
 }
 
 .stage-connector::after {
@@ -145,7 +145,9 @@ const connectorClass = (status: StageStatus) => `connector-${status.toLowerCase(
 }
 
 .connector-in_progress {
-  background: linear-gradient(90deg, var(--ctms-primary), rgba(63, 93, 117, 0.3));
+  height: 3px;
+  background: linear-gradient(90deg, #2f5f86 0%, rgba(47, 95, 134, 0.42) 68%, rgba(47, 95, 134, 0.14) 100%);
+  box-shadow: 0 2px 8px rgba(47, 95, 134, 0.18);
 }
 
 .connector-blocked {
@@ -158,8 +160,10 @@ const connectorClass = (status: StageStatus) => `connector-${status.toLowerCase(
 }
 
 .connector-in_progress::after {
-  border-top-color: var(--ctms-primary);
-  border-right-color: var(--ctms-primary);
+  width: 7px;
+  height: 7px;
+  border-top-color: #2f5f86;
+  border-right-color: #2f5f86;
 }
 
 .connector-blocked::after {
diff --git a/frontend/src/views/ia/project-overview/StageNode.test.ts b/frontend/src/views/ia/project-overview/StageNode.test.ts
new file mode 100644
index 00000000..c252fb30
--- /dev/null
+++ b/frontend/src/views/ia/project-overview/StageNode.test.ts
@@ -0,0 +1,32 @@
+import { describe, expect, it } from "vitest";
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+
+const readStageNode = () => readFileSync(resolve(__dirname, "./StageNode.vue"), "utf8");
+const readCenterProgressRow = () => readFileSync(resolve(__dirname, "./CenterProgressRow.vue"), "utf8");
+const readProjectOverview = () => readFileSync(resolve(__dirname, "../ProjectOverview.vue"), "utf8");
+
+describe("project overview stage progress styling", () => {
+  it("makes the in-progress stage visually distinct from pending stages", () => {
+    const source = readStageNode();
+
+    expect(source).toContain(".stage-in_progress .stage-dot");
+    expect(source).toContain("border: 3px solid #2f5f86");
+    expect(source).toContain(".stage-in_progress .stage-dot::after");
+    expect(source).toContain(".stage-in_progress .stage-dot::before");
+    expect(source).toContain("animation: progress-halo");
+    expect(source).toContain(".stage-in_progress .stage-label");
+    expect(source).toContain("font-weight: 800");
+  });
+
+  it("highlights the active connector and legend consistently", () => {
+    const rowSource = readCenterProgressRow();
+    const overviewSource = readProjectOverview();
+
+    expect(rowSource).toContain(".connector-in_progress");
+    expect(rowSource).toContain("height: 3px");
+    expect(rowSource).toContain("linear-gradient(90deg, #2f5f86");
+    expect(overviewSource).toContain(".legend-dot.active::after");
+    expect(overviewSource).toContain("background: #2f5f86");
+  });
+});
diff --git a/frontend/src/views/ia/project-overview/StageNode.vue b/frontend/src/views/ia/project-overview/StageNode.vue
index e7229964..c6b0c4a3 100644
--- a/frontend/src/views/ia/project-overview/StageNode.vue
+++ b/frontend/src/views/ia/project-overview/StageNode.vue
@@ -44,11 +44,14 @@ const statusClass = computed(() => `stage-${props.status.toLowerCase()}`);
   align-items: center;
   gap: 5px;
   min-width: 64px;
+  position: relative;
+  padding-top: 2px;
 }
 
 .stage-dot {
-  width: 14px;
-  height: 14px;
+  position: relative;
+  width: 15px;
+  height: 15px;
   border-radius: 50%;
   border: 2px solid var(--ctms-border-color);
   background-color: #ffffff;
@@ -60,7 +63,7 @@ const statusClass = computed(() => `stage-${props.status.toLowerCase()}`);
   color: var(--ctms-text-secondary);
   text-align: center;
   white-space: nowrap;
-  transition: color 0.2s ease;
+  transition: color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
 }
 
 .stage-date {
@@ -80,15 +83,55 @@ const statusClass = computed(() => `stage-${props.status.toLowerCase()}`);
 }
 
 .stage-in_progress .stage-dot {
-  border-color: var(--ctms-primary);
-  box-shadow: 0 0 0 3px rgba(63, 93, 117, 0.15);
+  width: 18px;
+  height: 18px;
+  border: 3px solid #2f5f86;
   background-color: #ffffff;
-  animation: pulse-ring 2s ease-in-out infinite;
+  box-shadow:
+    0 0 0 4px rgba(47, 95, 134, 0.14),
+    0 6px 14px rgba(47, 95, 134, 0.22);
+  animation: progress-ring 1.8s ease-in-out infinite;
 }
 
-@keyframes pulse-ring {
-  0%, 100% { box-shadow: 0 0 0 3px rgba(63, 93, 117, 0.15); }
-  50% { box-shadow: 0 0 0 5px rgba(63, 93, 117, 0.08); }
+.stage-in_progress .stage-dot::after {
+  content: "";
+  position: absolute;
+  inset: 3px;
+  border-radius: inherit;
+  background: #2f5f86;
+}
+
+.stage-in_progress .stage-dot::before {
+  content: "";
+  position: absolute;
+  inset: -8px;
+  border-radius: inherit;
+  border: 1px solid rgba(47, 95, 134, 0.24);
+  animation: progress-halo 1.8s ease-out infinite;
+}
+
+@keyframes progress-ring {
+  0%, 100% {
+    box-shadow:
+      0 0 0 4px rgba(47, 95, 134, 0.14),
+      0 6px 14px rgba(47, 95, 134, 0.22);
+  }
+  50% {
+    box-shadow:
+      0 0 0 6px rgba(47, 95, 134, 0.08),
+      0 8px 18px rgba(47, 95, 134, 0.26);
+  }
+}
+
+@keyframes progress-halo {
+  0% {
+    opacity: 0.65;
+    transform: scale(0.82);
+  }
+  100% {
+    opacity: 0;
+    transform: scale(1.25);
+  }
 }
 
 .stage-not_started .stage-dot {
@@ -108,8 +151,13 @@ const statusClass = computed(() => `stage-${props.status.toLowerCase()}`);
 }
 
 .stage-in_progress .stage-label {
-  color: var(--ctms-primary);
-  font-weight: 600;
+  margin-top: 1px;
+  padding: 2px 8px;
+  border-radius: 999px;
+  color: #244966;
+  background: rgba(47, 95, 134, 0.1);
+  box-shadow: inset 0 0 0 1px rgba(47, 95, 134, 0.14);
+  font-weight: 800;
 }
 
 .stage-blocked .stage-label {