/* 头部导航  自适应 手机端 */
 
/* 头部导航栏 自适应 */

@media screen and (max-width: 960px) {
  .menu_list .menu_item {
    margin-left: 30px;
  }

}
@media screen and (max-width: 820px) {
  .menu_list .menu_item {
    margin-left: 21px;
  }
}
@media (min-width: 576px) {
.container, .container-sm {
    max-width: none !important;
}
}

@media (max-width: 768px) {
.wrap_head {
    display: none !important;
}

.banner {
  width: 100% !important;
  position: relative;
}
.banner img {
  width: 100%;
  height: auto;
  display: block;
}

}

/* 响应式媒体查询 */
@media (max-width: 992px) {
  .second_box h3 {
    font-size: 20px;
  }
  .navbar-brand img {
    height: 60px;
  }
}

@media (max-width: 768px) {
  .second_box h3 {
    font-size: 18px;
  }
  .second_box {
    padding: 15px;
  }
  .navbar-brand img {
    height: 60px;
  }
}

@media (max-width: 576px) {
  .second_box h3 {
    font-size: 15px !important;
  }
  .second_box {
    padding: 10px;
  }

  .navbar-brand img {
    height: 55px;
  }
}














.banner {
  width: 100%;
  margin: auto;
  overflow: hidden;
}

.banner img {
  width: 100%;
  height: auto;
  display: block;
}

.main .about_introduce {
  font-size: 20px;
  font-weight: 100;
  /* text-align: center; */
  line-height: 50px;
  color: rgb(116, 117, 115);
}

.main .about_introduce_en {

  font-size: 20px;
  margin: 0 320px;
  font-weight: 100;
  line-height: 50px;
  color: rgb(116, 117, 115);
  padding-top: 70px;
}

.main .about_introduce .title {
  font-weight: 600;
  font-size: 27px;
  color: black;
  margin-top: 50px;
}

.main .about_introduce_en .title {
  font-weight: 600;
  font-size: 27px;
  text-align: center;
  color: black;
  margin-top: 50px;
}

.main .about_introduce:last-child {
  margin-bottom: 46px;
}
/* 手机端 */
@media screen and (max-width: 576px) {
  .main {
    text-align: left !important;
    padding: 0 24px;
  }
  .main .about_introduce {
    line-height: 20px !important;
  }
.about_introduce .title {
  font-size: 24px !important;
  text-align: center;
  margin-bottom: 13px;
}
.about_introduce span {
  font-size: 16px !important;
  line-height: 26px !important;
  text-align: left;
} 


}



.accordion-body {
    padding-left: 0 !important;
}
.accordion-body ul {
    height: 117px;
    padding-left: 0;
}
.accordion-body ul li {
    padding: 6px 0;
    margin-left: 17.5px;
    font-size: 14px;
}
.accordion-body ul li a {
    color: #2a2e2e !important;
}


/* 底部导航栏手机端自适应 */
.accordion-button:not(.collapsed) {
 background-color: #fff !important;
}
@media screen and (max-width: 768px) {
 .desktop-nav {
  display: none;
 }
.mobile-nav {
  display: block;
}
.wrap_footer {
  background: #fff;
}
.footer_con {
  height: 0;
}
.focus_us {
  padding-left: 30px;
  
}
.focus_us .tit {
  font-size: 16px;
}
.accordion-button {
  padding-left: 30px !important;
  font-size: 16px !important;
  color: #5f6464 !important;
  border-bottom: none !important;
  box-shadow: none !important;

}
/* 去掉 accordion-header 的边框 */
.accordion-header {
  border-bottom: none !important;
}
/* 去掉 accordion-item 的边框 */
.accordion-item {
  border: none !important;
  border-radius: 0 !important;
}
.accordion-body ul li {
  margin-left: 30px !important;
  color: #5f6464 !important;
}
}

@media screen and (max-width: 768px) {
  .footer_area {
   padding-left: 30px;
  background-color: #fff;
  margin-bottom: 30px;
  margin-top: 10px;
  }
}
@media screen and (max-width: 576px) {
  .footer_area .flag_m {
    display: block;
  }
}
.footer_area .copyright {
font-size: 12px;
color: #929797;
margin: 0 !important;
}

@media screen and (min-width: 767px) {
  .desktop-nav {
  display: block;
 }
.mobile-nav {
  display: none;
}


}