diff --git a/frontend/src/views/ProjectManagement/ProjectManagement.css b/frontend/src/views/ProjectManagement/ProjectManagement.css
index f33810d..b72354f 100644
--- a/frontend/src/views/ProjectManagement/ProjectManagement.css
+++ b/frontend/src/views/ProjectManagement/ProjectManagement.css
@@ -531,40 +531,170 @@
   font-size: 13px;
 }
 
-.project-editor {
-  display: grid;
-  grid-template-columns: minmax(200px, 1fr) minmax(300px, 2fr);
-  align-items: end;
-  gap: 16px;
-  margin-bottom: 20px;
-  padding: 18px;
-  border: 1px solid #e2e8f0;
-  border-radius: 14px;
-  background: #f8fafc;
+.project-modal-backdrop {
+  position: fixed;
+  inset: 0;
+  z-index: 1000;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 20px;
+  background: rgba(15, 23, 42, 0.45);
+  backdrop-filter: blur(4px);
+  box-sizing: border-box;
 }
 
-.project-editor h3 {
-  grid-column: 1 / -1;
-  margin: 0;
-  font-size: 16px;
+.project-modal {
+  width: min(100%, 540px);
+  max-height: calc(100vh - 40px);
+  overflow-y: auto;
+  padding: 28px;
+  background: #ffffff;
+  border: 1px solid #e2e8f0;
+  border-radius: 18px;
+  box-shadow: 0 20px 48px rgba(15, 23, 42, 0.16), 0 0 0 1px rgba(15, 23, 42, 0.04);
+  box-sizing: border-box;
+}
+
+.project-modal .modal-heading {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 16px;
+  margin-bottom: 22px;
+  padding-bottom: 16px;
+  border-bottom: 1px solid #f1f5f9;
+}
+
+.project-modal .modal-heading .eyebrow {
+  margin: 0 0 6px;
+  color: #64748b;
+  font-size: 12px;
   font-weight: 700;
+  letter-spacing: 0.05em;
+}
+
+.project-modal .modal-heading h2 {
+  margin: 0;
+  font-size: 20px;
+  font-weight: 700;
+  color: #0f172a;
+  letter-spacing: -0.02em;
+}
+
+.project-modal .close-button {
+  width: 32px;
+  height: 32px;
+  padding: 0;
+  border: 1px solid #e2e8f0;
+  border-radius: 8px;
+  background: #f8fafc;
+  color: #64748b;
+  font-size: 20px;
+  line-height: 1;
+  cursor: pointer;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  transition: all 0.15s ease;
+}
+
+.project-modal .close-button:hover:not(:disabled) {
+  background: #f1f5f9;
   color: #0f172a;
 }
 
-.project-editor .project-actions {
-  grid-column: 1 / -1;
-  margin-top: 6px;
-}
-
-.project-editor label {
+.project-editor {
   display: flex;
   flex-direction: column;
-  gap: 6px;
+  gap: 16px;
+  margin: 0;
+  padding: 0;
+  border: none;
+  background: transparent;
+}
+
+.project-editor .field {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
   font-size: 13px;
   font-weight: 600;
   color: #334155;
 }
 
+.project-editor .field input,
+.project-editor .field textarea {
+  box-sizing: border-box;
+  width: 100%;
+  padding: 10px 14px;
+  border: 1px solid #cbd5e1;
+  border-radius: 10px;
+  font-size: 14px;
+  color: #0f172a;
+  background: #ffffff;
+  transition: border-color 0.15s ease, box-shadow 0.15s ease;
+  font-family: inherit;
+}
+
+.project-editor .field input:focus,
+.project-editor .field textarea:focus {
+  outline: none;
+  border-color: #3b82f6;
+  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
+}
+
+.project-editor .field textarea {
+  resize: vertical;
+  min-height: 84px;
+  line-height: 1.5;
+}
+
+.project-modal .modal-actions {
+  display: flex;
+  align-items: center;
+  justify-content: flex-end;
+  gap: 12px;
+  margin-top: 8px;
+  padding-top: 16px;
+  border-top: 1px solid #f1f5f9;
+}
+
+.project-modal .secondary-button {
+  padding: 9px 18px;
+  border: 1px solid #cbd5e1;
+  border-radius: 10px;
+  background: #ffffff;
+  color: #475569;
+  font-size: 14px;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all 0.15s ease;
+}
+
+.project-modal .secondary-button:hover:not(:disabled) {
+  background: #f8fafc;
+  color: #0f172a;
+  border-color: #94a3b8;
+}
+
+.project-modal .primary-button {
+  padding: 9px 20px;
+  border: 1px solid #2563eb;
+  border-radius: 10px;
+  background: #2563eb;
+  color: #ffffff;
+  font-size: 14px;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all 0.15s ease;
+}
+
+.project-modal .primary-button:hover:not(:disabled) {
+  background: #1d4ed8;
+  border-color: #1d4ed8;
+}
+
 .project-help {
   display: inline-flex;
   align-items: center;
diff --git a/frontend/src/views/ProjectManagement/ProjectManagement.vue b/frontend/src/views/ProjectManagement/ProjectManagement.vue
index 22e1c7f..10295b8 100644
--- a/frontend/src/views/ProjectManagement/ProjectManagement.vue
+++ b/frontend/src/views/ProjectManagement/ProjectManagement.vue
@@ -27,19 +27,31 @@ const {
     <p v-if="projectError" class="project-error" role="alert">{{ projectError }}</p>
     <p v-if="lifecycleError" class="project-error" role="alert">{{ lifecycleError }}</p>
     <p v-if="lifecycleNotice" class="project-notice" role="status">{{ lifecycleNotice }}</p>
-    <form v-if="projectEditor" class="project-editor" aria-label="项目资料" @submit.prevent="saveProject">
-      <h3>{{ projectEditor.create ? "创建项目" : "编辑项目" }}</h3>
-      <label>项目名称
-        <input v-model="projectEditor.name" required maxlength="128" autocomplete="off" :disabled="savingProject" />
-      </label>
-      <label>项目说明
-        <textarea v-model="projectEditor.description" maxlength="4096" rows="2" :disabled="savingProject"></textarea>
-      </label>
-      <div class="project-actions">
-        <button class="project-primary" type="submit" :disabled="savingProject || loadingProjects || savingMember">{{ savingProject ? "正在保存……" : "保存项目" }}</button>
-        <button type="button" :disabled="savingProject" @click="cancelProjectAction">取消</button>
-      </div>
-    </form>
+    <div v-if="projectEditor" class="modal-backdrop project-modal-backdrop" @click.self="cancelProjectAction">
+      <section class="modal-card project-modal" role="dialog" aria-modal="true" :aria-label="projectEditor.create ? '创建项目' : '编辑项目'">
+        <div class="modal-heading">
+          <div>
+            <p class="eyebrow">项目管理</p>
+            <h2>{{ projectEditor.create ? "创建项目" : "编辑项目" }}</h2>
+          </div>
+          <button class="close-button" type="button" aria-label="关闭" :disabled="savingProject" @click="cancelProjectAction">×</button>
+        </div>
+        <form class="project-editor" aria-label="项目资料" @submit.prevent="saveProject">
+          <label class="field">
+            <span>项目名称</span>
+            <input v-model="projectEditor.name" required maxlength="128" autocomplete="off" :disabled="savingProject" />
+          </label>
+          <label class="field">
+            <span>项目说明</span>
+            <textarea v-model="projectEditor.description" maxlength="4096" rows="3" :disabled="savingProject"></textarea>
+          </label>
+          <div class="modal-actions project-actions">
+            <button class="secondary-button" type="button" :disabled="savingProject" @click="cancelProjectAction">取消</button>
+            <button class="project-primary primary-button" type="submit" :disabled="savingProject || loadingProjects || savingMember">{{ savingProject ? "正在保存……" : "保存项目" }}</button>
+          </div>
+        </form>
+      </section>
+    </div>
     <div v-if="pendingDeleteProject" class="project-confirm" role="alert">
       <span>确认删除项目“{{ pendingDeleteProject.name }}”（{{ pendingDeleteProject.id }}）？</span>
       <span class="project-help" tabindex="0" title="默认项目不能删除；存在域名、服务器、绑定或成员时会拒绝删除，不会自动删除关联资源。">ⓘ</span>