style(StudyDetailPage): 调整课程标题字体样式条件

@@ -223,7 +223,7 @@
                             <div v-if="lesson.progress > 0 && lesson.progress < 100"
                                 class="absolute top-2 right-2 px-2 py-1 bg-green-100 text-green-600 text-xs rounded">
                                 上次看到</div>
-                            <div class="text-black text-base font-medium mb-2" :class="{ 'text-green-600' : courseId == lesson.id }">{{ lesson.title }}</div>
+                            <div class="text-black text-base mb-2" :class="{ 'text-green-600 font-medium' : courseId == lesson.id }">{{ lesson.title }}</div>
                             <div class="flex items-center text-sm text-gray-500">
                                 <span>{{ course_type_maps[lesson.course_type] }}</span>
                                 <span v-if="course_type_maps[lesson.course_type]" class="mx-2">|</span>