优化登录页UI、新增占满布局类

frontend/src/views/admin/Projects.vue

@@ -1,14 +1,14 @@
 <template>
   <div class="page">
-    <el-card shadow="never" class="main-content-card unified-shell">
+    <div class="main-content-flat unified-shell">
       <div class="unified-action-bar actions-only-bar">
         <div class="filter-spacer"></div>
         <el-button type="primary" @click="openCreate">
           {{ TEXT.common.actions.add }}{{ TEXT.modules.adminProjects.projectLabel }}
         </el-button>
       </div>
-      <div class="unified-section">
-        <el-table :data="projects" v-loading="loading" stripe>
+      <div class="unified-section project-table-section">
+        <el-table :data="projects" v-loading="loading" stripe class="project-table">
           <el-table-column prop="name" :label="TEXT.common.fields.projectName" min-width="300">
             <template #default="scope">
               <el-link type="primary" @click="goDetail(scope.row)" class="font-medium">{{ scope.row.name }}</el-link>
@@ -57,7 +57,7 @@
           </el-table-column>
         </el-table>
       </div>
-    </el-card>
+    </div>
     <ProjectForm v-model:visible="formVisible" :project="editingProject" @saved="loadProjects" />
   </div>
 </template>
@@ -219,6 +219,20 @@ onMounted(() => {
 .page {
   display: flex;
   flex-direction: column;
+  gap: 0;
+}
+
+.main-content-flat {
+  width: 100%;
+  background: transparent;
+  border: 0;
+  border-radius: 0;
+  box-shadow: none;
+  padding: 0;
+}
+
+.main-content-flat :deep(.el-card__body) {
+  padding: 0;
 }
 
 .actions-only-bar {
@@ -227,9 +241,12 @@ onMounted(() => {
   align-items: center;
 }
 
-.unified-section {
-  padding-top: 12px;
-  padding-bottom: 12px;
+.project-table-section {
+  padding: 0;
+}
+
+.project-table :deep(.el-table__inner-wrapper::before) {
+  display: none;
 }
 
 .action-btn {