优化登录页UI、新增占满布局类

frontend/src/views/startup/EthicsDetail.vue

@@ -26,7 +26,7 @@
           </el-descriptions-item>
         </el-descriptions>
       </section>
-      <section class="unified-section">
+      <section class="unified-section attachment-section">
         <AttachmentList
           v-if="recordId"
           :study-id="studyId"
@@ -156,6 +156,18 @@ onMounted(() => {
 });
 </script>
 
+<style scoped>
+.page {
+  display: flex;
+  flex-direction: column;
+  gap: 0;
+}
+
+.attachment-section {
+  padding: 0;
+}
+</style>
+
 <style scoped>
 .page {
   display: flex;

frontend/src/views/startup/FeasibilityDetail.vue

@@ -25,7 +25,7 @@
           </el-descriptions-item>
         </el-descriptions>
       </section>
-      <section class="unified-section">
+      <section class="unified-section attachment-section">
         <AttachmentList
           v-if="recordId"
           :study-id="studyId"
@@ -154,6 +154,18 @@ onMounted(() => {
 });
 </script>
 
+<style scoped>
+.page {
+  display: flex;
+  flex-direction: column;
+  gap: 0;
+}
+
+.attachment-section {
+  padding: 0;
+}
+</style>
+
 <style scoped>
 .page {
   display: flex;

frontend/src/views/startup/KickoffDetail.vue

@@ -41,7 +41,7 @@
         </el-descriptions>
       </section>
 
-      <section class="unified-section">
+      <section class="unified-section training-section">
         <div class="training-header">
           <div class="training-title">{{ TEXT.modules.startupMeetingAuth.trainingTab }}</div>
         </div>
@@ -126,7 +126,7 @@
         />
       </section>
 
-      <section v-if="meetingId" class="unified-section">
+      <section v-if="meetingId" class="unified-section attachment-section">
         <div class="attachment-grid">
           <AttachmentList
             v-for="group in kickoffAttachmentGroups"
@@ -448,6 +448,16 @@ onMounted(async () => {
   gap: 0;
 }
 
+.training-section,
+.attachment-section {
+  padding-left: 0;
+  padding-right: 0;
+}
+
+.training-section {
+  padding-top: 0;
+}
+
 .training-header {
   display: flex;
   align-items: center;