body {
  margin: 0;
  padding: 0;
  display: flex;
  min-height: 100vh;
}

#product-folders {
  width: 250px;
  background: #f5f5f5;
  padding: 20px;
  border-right: 1px solid #ddd;
  overflow-y: auto;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  height: 100vh;
}

#product-folders h3 {
  margin-top: 0;
  color: #333;
}

#product-folders ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

#product-folders li {
  padding: 4px 0;
  cursor: pointer;
  border-radius: 4px;
  margin: 2px 0;
  transition: all 0.3s ease;
}

#product-folders li:hover {
  background: #fff;
  color: #000;
}

#product-folders li.active {
  background: #007bff;
  color: white;
}


.folder-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 8px;
}

.folder-name {
  flex: 1;
}

.folder-icon {
  font-size: 12px;
  margin-left: 8px;
  transition: transform 0.3s ease;
}

.subfolder-wrapper {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-in-out;
}

.subfolder-wrapper.expanded {
  max-height: 2000px; /* 设置一个足够大的值 */
}

.subfolder {
  margin-left: 16px;
  border-left: 1px solid #ddd;
  padding-left: 8px;
}

.file-name {
  display: block;
  padding: 4px 8px;
}

#md-content {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  margin-left: 300px;
  min-height: 100vh;
}

.category-item {
  font-weight: 500;
}

pre {
  background: #f8f8f8;
  padding: 15px;
  border-radius: 4px;
  overflow-x: auto;
}