.language_box {
  text-align: right;
  background-color: #111111;
  color: #fff;
  font-size: 12px;
  padding: 5px 20px;
  cursor: pointer;
}

.language_box span {
  margin: 0 10px;
}

@keyframes slideIn {
  0% { transform: translateY(-90px); opacity: 0; }
  50% { transform: translateY(-10px); opacity: 0.5; }
  100% { transform: translateY(0); opacity: 1; }
}

@keyframes slideOut {
  0% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(-10px); opacity: 0.5; }
  100% { transform: translateY(-80px); opacity: 0; }
}

.select_language_box.show {
  display: block;
  animation: slideIn 0.8s forwards;
}

.select_language_box.hide {
  display: none;
  animation: slideOut 0.8s forwards;
}

.select_language_box {
  display: none;
  padding: 50px 40px;
  background-color: #f7f7f7;
  /* opacity: 0; */
  /* transform: translateY(-20px); */
  transition: all 0.3s ease-in-out;
}

.select_language_box h1 {
  font-size: 28px;
  font-weight: 800;
  color: #000;
  margin-bottom: 30px;
}

.select_language_box .language_item {
  display: flex;
  flex-wrap: wrap;
  color: #808080;

  cursor: pointer;
}

.select_language_box .language_item div {
  width: 20%;
  margin-bottom: 20px;
}

.header_box {
  background: #fff;
  color: #000;
  padding: 10px 20px;
  display: flex;
  /* justify-content: space-between; */
  align-items: center;
}

header .logo {
  margin-right: 30px;
  /* font-size: 1.5rem; */
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
}

nav ul li {
  margin-right: 20px;
}

button.lang-toggle {
  background-color: #f7f7f7;
  border: none;
  padding: 5px 10px;
  cursor: pointer;
}

main {
  padding: 20px 0px 0;
  /* margin-top: 28px; */
}
footer{
  background-color: #171717;
  padding: 10px 20px 0;
}
.footer_box{
  display: flex;
  justify-content: space-between;
  color: #fff;
  padding: 20px 0;
}
.footer_box .footer_table{
  display: flex;
  flex: 1;
  margin-left: 40px;
}
.footer_box .footer_table .title_item{
  margin: 0 40px;
  font-size: 14px;
}
.footer_box .footer_table .title_item p{
  margin-bottom: 10px;
}
.footer_box .footer_table .title_item .sub_title{
  margin-bottom: 40px;
  font-size: 16px;
  font-weight: 700;
}
.footer_box .tel{
  font-size: 28px;
  font-weight: 900;
  text-align: right;
}
#footer_bei{
  color: #898989;
  text-align: center;
  font-size: 12px;
}
/* 默认情况下，pc端显示footer_box */
.pc_footer {
  display: block;
}

.mobile_footer {
  display: none;
}

/* 当屏幕宽度小于768px时，隐藏pc端footer_box，显示mobile_footer */
@media (max-width: 768px) {
  .language_box{
    display: none;
  }
  .pc_footer {
      display: none;
  }

  .mobile_footer {
      display: block;
  }
}