增加mac版本的界面的元素辨识度

@@ -1371,6 +1371,7 @@ class ImageGeneratorWindow(QMainWindow):
         # Reference images section
         ref_group = QGroupBox("参考图片")
         ref_layout = QVBoxLayout()
+        ref_layout.setContentsMargins(5, 2, 5, 5)  # 减少上边距
 
         # Upload button and count
         upload_header = QHBoxLayout()
@@ -1690,8 +1691,8 @@ class ImageGeneratorWindow(QMainWindow):
                     font-size: 10pt;
                     border: 1px solid #e5e5e5;
                     border-radius: 6px;
-                    margin-top: 10px;
-                    padding-top: 10px;
+                    margin-top: 2px;
+                    padding-top: 2px;
                 }
                 QGroupBox::title {
                     subcontrol-origin: margin;
@@ -1977,7 +1978,7 @@ class ImageGeneratorWindow(QMainWindow):
                     # Info row
                     info_layout = QHBoxLayout()
                     index_label = QLabel(f"图 {idx + 1}")
-                    index_label.setStyleSheet("QLabel { font-size: 8pt; color: #666666; }")
+                    index_label.setStyleSheet("QLabel { font-size: 12pt; color: #666666; font-weight: bold; }")
                     info_layout.addWidget(index_label)
 
                     del_btn = QPushButton("✕")