* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  color: #333;
  line-height: 1.6;
}
a {
  text-decoration: none;
  color: inherit;
}
ul {
  list-style: none;
}
.main-container {
  display: flex;
  min-height: 1200px;
}
.main-container .product-pc-container {
  width: 213px;
  margin: 0 auto;
}
.main-container .product-pc-container .product-pc-title {
  color: #0046A4;
  font-size: 20px;
  font-weight: 600;
  line-height: 20px;
  padding-bottom: 32px;
  border-bottom: 1px solid #0046A4;
}
.main-container .product-pc-container .product-pc-menu-container {
  width: 100%;
  background-color: white;
  border-radius: 0.5rem;
  overflow: hidden;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu {
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item {
  padding: 20px 0;
  transition: all 0.3s ease-in-out;
  border-bottom: 1px solid #e5e5e5;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item:last-child {
  border-bottom: none;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item .product-pc-primary-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  cursor: pointer;
  transition: all 0.3s ease-in-out;
  color: #000;
  font-size: 16px;
  font-weight: 600;
  line-height: 20px;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item .product-pc-primary-item:hover {
  color: #0046A4;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item .product-pc-primary-item.product-pc-active {
  color: #0046A4;
  font-weight: 500;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item .product-pc-primary-item .product-pc-icon-text-container {
  display: flex;
  align-items: center;
  flex: 1;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item .product-pc-primary-item .product-pc-icon-text-container .product-pc-primary-icon {
  width: 24px;
  height: 24px;
  margin-right: 0.75rem;
  object-fit: contain;
  flex-shrink: 0;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item .product-pc-primary-item .product-pc-icon-text-container .product-pc-primary-text {
  text-align: left;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item .product-pc-primary-item .product-pc-arrow-img {
  width: 13px;
  height: 8px;
  transition: transform 0.3s ease-in-out;
  /* 防止图片拉伸 */
  object-fit: contain;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item .product-pc-primary-item .product-pc-arrow-img.product-pc-rotate {
  transform: rotate(180deg);
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item .product-pc-secondary-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  transition: all 0.3s ease-in-out;
  font-size: 14px;
  font-style: normal;
  font-weight: 600;
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.4s ease-out, opacity 0.3s ease-out;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item .product-pc-secondary-menu.product-pc-show {
  margin-top: 10px;
  max-height: 500px;
  /* 足够大的值以容纳所有子项 */
  height: fit-content;
  opacity: 1;
  transition: max-height 0.5s ease-in, opacity 0.4s ease-in;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item .product-pc-secondary-menu .product-pc-secondary-item {
  padding: 0.75rem 3rem;
  cursor: pointer;
  transition: all 0.3s ease-in-out;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item .product-pc-secondary-menu .product-pc-secondary-item:hover {
  color: #0046A4;
}
.main-container .product-pc-container .product-pc-menu-container .product-pc-menu .product-pc-menu-item .product-pc-secondary-menu .product-pc-secondary-item.product-pc-active {
  color: #0046A4;
  font-weight: 500;
}
.main-container .product-display {
  width: 915px;
  flex: 1;
  margin-left: 100px;
  border-radius: 8px;
}
.main-container .product-display .item_box_list .item_box {
  width: 100%;
  /* Flex布局 */
  display: flex;
  align-content: flex-start;
  justify-content: flex-start;
  flex-wrap: wrap;
  padding-bottom: 40px;
  /* 子元素之间的间距 */
  gap: 30px;
}
.main-container .product-display .item_box_list .item_box ._item {
  width: 285px;
  height: 354px;
  flex-shrink: 0;
  border: 1px solid #e5e5e5;
  background: #fff;
  padding-top: 50px;
  padding-bottom: 40px;
  display: flex;
  justify-content: space-between;
  flex-direction: column;
  align-items: center;
  transition: all 0.3s ease;
}
.main-container .product-display .item_box_list .item_box ._item:hover {
  box-shadow: 0 0 25px 0 rgba(0, 70, 164, 0.3);
}
.main-container .product-display .item_box_list .item_box ._item:hover ._item_box ._item_name {
  color: #0046a4;
}
.main-container .product-display .item_box_list .item_box ._item:hover ._item_box ._item_text {
  margin-top: 5px;
}
.main-container .product-display .item_box_list .item_box ._item:hover ._item_box ._button {
  width: 169px;
  height: 44px;
  /* 显示按钮：完全不透明且恢复原大小 */
  opacity: 1;
  transform: scale(1);
  visibility: visible;
}
.main-container .product-display .item_box_list .item_box ._item img {
  width: 185.151px;
  height: 127.896px;
}
.main-container .product-display .item_box_list .item_box ._item ._item_box {
  flex-direction: column;
}
.main-container .product-display .item_box_list .item_box ._item ._item_box ._item_name {
  padding: 0 20px;
  text-align: center;
  color: #666;
  font-size: 20px;
  font-weight: 500;
  transition: all 0.3s ease;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.main-container .product-display .item_box_list .item_box ._item ._item_box ._item_text {
  padding: 0 20px;
  text-align: center;
  color: #000;
  font-size: 13px;
  font-weight: 500;
  margin-top: 12px;
  transition: all 0.3s ease;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
.main-container .product-display .item_box_list .item_box ._item ._item_box ._button {
  width: 0px;
  height: 0px;
  transition: all 1s ease;
  margin-top: 16px;
  /* 初始状态：完全透明且缩放为0（不占位置） */
  opacity: 0;
  transform: scale(0);
  visibility: hidden;
  /* 过渡效果：让显示/隐藏更平滑 */
  transition: all 0.3s ease;
}
.nav-menu ul {
  padding-left: 0;
}
.nav-menu .menu-item {
  position: relative;
}
.nav-menu .menu-item.highlight > .menu-toggle {
  color: #0046a4 !important;
}
.nav-menu .menu-item .menu-toggle {
  display: flex;
  align-items: center;
  padding: 15px 0;
  cursor: pointer;
  transition: all 0.3s ease;
}
.nav-menu .menu-item .menu-toggle i {
  margin-right: 10px;
  width: 20px;
  text-align: center;
}
.nav-menu .menu-item .menu-toggle .arrow-icon {
  margin-right: 0;
  transition: transform 0.3s ease;
}
.nav-menu .menu-item .menu-toggle .arrow-icon.rotate {
  transform: rotate(180deg);
}
.nav-menu .menu-item .menu-toggle .arrow-icon-level2 {
  font-size: 0.8em;
  color: #999;
}
.nav-menu .menu-level-1 .menu-item .menu-toggle span {
  flex: 1;
}
.nav-menu .menu-level-1 .menu-item .submenu {
  display: none;
}
.nav-menu .menu-level-1 .menu-item:first-child .menu-toggle {
  border-top: none;
}
.nav-menu .menu-level-2 .menu-item {
  padding-left: 20px;
}
.nav-menu .menu-level-2 .menu-item .menu-toggle::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  background-color: #0046a4;
  /* 方块颜色 */
  margin-right: 8px;
  /* 与内容的间距 */
  vertical-align: middle;
  /* 垂直居中对齐 */
}
.nav-menu .menu-level-2 .menu-item .menu-toggle::before span {
  font-size: 14px;
  font-weight: 500;
  line-height: 14px;
}
.nav-menu .menu-level-2 .menu-item .submenu {
  display: none;
}
.nav-menu .menu-level-3 .menu-item {
  padding-left: 40px;
  color: yellow;
}
.nav-menu .menu-level-3 .menu-item:hover {
  color: #e9ecef;
}
.nav-menu .menu-level-3 .menu-item a {
  display: block;
  padding: 8px 0;
}
.nav-menu .menu-level-3 .menu-item.highlight a {
  color: #0046a4;
  font-weight: bold;
}
.nav-menu .submenu {
  list-style: none;
}
.nav-menu .submenu li:last-child {
  border-bottom: none;
}
.nav-menu .submenu li a {
  padding: 10px 0;
  font-size: 14px;
  transition: all 0.2s ease;
}
.nav-menu .submenu li a:hover {
  color: #3498db;
}