style(pwlProject): 统一按钮圆角样式并优化导出按钮- 移除生成按钮的 primary 类型- 移除导出按钮的 danger 类型

- 修改优化建议输入框的占位符文本-为所有按钮添加统一的圆角样式和悬停效果
- 特别设置导出按钮的边框样式
- 调整导航按钮的圆角大小

src/views/pwl/pwlProject/components/report.vue

@@ -37,7 +37,7 @@
 
     <a-card style="margin-bottom: 20px; text-align: center; background: transparent" :bordered="false">
       <a-space>
-        <a-button type="primary" size="large" @click="handleGenerateAll" :loading="generatingAll">
+        <a-button size="large" @click="handleGenerateAll" :loading="generatingAll">
           <template #icon>
             <UngroupOutlined/>
           </template>
@@ -55,7 +55,7 @@
           </template>
           加载草稿
         </a-button>
-        <a-button size="large" @click="handleExport" type="danger" class="export-button">
+        <a-button size="large" @click="handleExport">
           <template #icon>
             <UploadOutlined/>
           </template>
@@ -153,7 +153,7 @@
                 <a-textarea
                   v-model:value="item.suggestion"
                   :rows="3"
-                  placeholder="请在此输入您的优化建议或疑问..."
+                  placeholder="请输入优化提示词并回车..."
                   class="suggestion-textarea"
                   style="flex: 1;"
                   @pressEnter="generateContent(index)"
@@ -939,6 +939,7 @@ export default {
 
 :deep(.export-button) {
   border: 2px solid #ff4d4f !important;
+  border-radius: 20px !important;
 
   &:hover, &:focus {
     border-color: #ff7875 !important;
@@ -946,6 +947,27 @@ export default {
   }
 }
 
+/* 统一设置所有按钮为圆角 */
+:deep(.ant-btn) {
+  border-radius: 20px !important;
+  transition: all 0.3s ease;
+
+  &:hover {
+    transform: translateY(-1px);
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+  }
+}
+
+/* 发送按钮特殊样式 */
+:deep(.ant-btn-primary) {
+  border-radius: 20px !important;
+
+  &:hover {
+    transform: translateY(-1px);
+    box-shadow: 0 4px 12px rgba(24, 144, 255, 0.3);
+  }
+}
+
 .navigation-container {
   .nav-grid {
     display: grid;
@@ -956,7 +978,7 @@ export default {
 
   .nav-button {
     height: 48px;
-    border-radius: 8px;
+    border-radius: 20px !important;
     transition: all 0.3s ease;
     display: flex;
     align-items: center;