style: 清理未使用的样式

src/components/ReviewDetail.vue

@@ -480,11 +480,4 @@ watch(
   margin-top: 12px;
 }
 
-@media (max-width: 900px) {
-  .form-row {
-    flex-direction: column;
-    align-items: stretch;
-  }
-}
-
 </style>

src/components/ReviewRecall.vue

@@ -860,11 +860,6 @@ onMounted(() => {
   white-space: nowrap;
 }
 
-.scope-hint {
-  font-size: 12px;
-  color: var(--text-secondary, #999);
-}
-
 .session-badge {
   flex-shrink: 0;
 }

src/components/StartTask.vue

@@ -1162,10 +1162,6 @@ onUnmounted(() => {
 }
 
 @media (max-width: 768px) {
-  .top-head {
-    flex-direction: column;
-  }
-
   .info-grid {
     grid-template-columns: 1fr;
   }
@@ -1260,14 +1256,4 @@ onUnmounted(() => {
   text-overflow: ellipsis;
 }
 
-.history-content {
-  flex: 1;
-  font-size: 14px;
-  line-height: 1.6;
-  color: var(--text-primary);
-  word-break: break-word;
-}
-
-.report-item .history-content {
-  margin: 0;
-}</style>
+</style>

src/components/Study.vue

@@ -791,10 +791,6 @@ onMounted(() => {
 }
 
 @media (max-width: 768px) {
-  .page-head {
-    flex-direction: column;
-  }
-
   .action-card {
     grid-template-columns: 1fr;
   }