body,
header,
footer,
div,
p,
ul,
li,
section,
article,
nav {
  font-family: "Helvetica Neue", Helvetica, "PingFang SC", Tahoma, Arial, sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
a,
a:visited,
a:hover,
a:active {
  color: inherit;
  text-decoration: none !important;
}
.fx {
  display: flex;
}
.w100 {
  width: 100% !important;
}
.w50 {
  width: 50% !important;
}
.col-sm-100 {
  width: 100% !important;
}
@media (min-width: 768px) {
  .col-md-50 {
    width: 50% !important;
  }
}
.swiper-title {
  position: relative;
  display: flex;
  height: 36px;
  margin: 0;
  justify-content: start;
  background: rgba(0, 0, 0, 0.3);
  align-items: center;
  padding-left: 10px;
  bottom: 36px;
  color: white;
  font-size: 12px;
  font-weight: bold;
  text-decoration: none;
}
.h100 {
  height: 100%;
}


.banner {
  width: 100%;
  height: 498px;
  background-image: url(../images/index/1920banner.jpg);
  background-size: 100% 100%;

  position:relative;
}
.searchbtn {
   /* height: 50px;
  width: 300px;
  position: absolute;
 top: 70%;
  right: 180px; 
  right: 0;
  bottom: 0;
  transform: translateY(-50%);*/
position: absolute;
right: 0;
height: 52px;
}
@media (max-width: 1024px) {
  .banner  {
    width: 100%;
     height: 350px;
    background-image: url(../images/index/1920banner.jpg);
    background-size: 100% 100%;
  }
  .searchbtn{
    right: 60px;
  }
}

@media (max-width: 992px) {
  .banner  {
    width: 100%;
     height: 300px;
    background-image: url(../images/index/1920banner.jpg);
    background-size: 100% 100%;
  }
  .searchbtn{
    right: 60px;
  }
}
@media (max-width: 820px) {
   .banner {
    width: 100%;
    height: 249px;
    background-image: url(../images/index/1920banner.jpg);
    background-size: 100% 100%;
  }
  .searchbtn{
    right: 60px;
  }
}
@media (max-width: 768px) {
  .banner {
    width: 100%;
    height: 249px;
    background-image: url(../images/index/1920banner.jpg);
    background-size: 100% 100%;
  }
  .searchbtn{
    right: 60px;
  }
}
@media (max-width: 576px) {
  .banner {
    height: 230px;
  }
}

@media (max-width: 480px) {
  .banner {
    width: 100%;
    height: 100px;
    background-image: url(../images/index/720banner.jpg);
    background-size: 100% 100%;
  }
}
/*menu菜单开始*/
.nav {
  display: flex;
  width: 100%;
  height: 52px;
  background-color: #1656a9;
  justify-content: center;
  align-items: center;
  color: #FFF;
  font-family: "微软雅黑";
  font-size: 20px;
  font-weight: 600;
}

@media (max-width: 992px) {
  .nav {
    height: 40px;
  }
}

.nav .box {
  display: flex;
  flex-direction: row;
  height: 100%;
  max-width: 1200px;
  width: 100%;
  padding: 0 15px;
}

@media (max-width: 992px) {
  .nav .box {
    justify-content: end;
    position: relative;
    padding: 0 10px;
  }
}

.nav .box .nav-box {
  flex: 1;
  display: flex;
  list-style: none;
  height: 100%;
  box-sizing: border-box;
  z-index: 100;
  margin: 0;
  padding: 0;
  /* 使用 flex 均分 */
  justify-content: space-between;
  align-items: center;
}

@media (max-width: 992px) {
  .nav .box .nav-box {
    display: none;
    position: absolute;
    width: 100%;
    flex-direction: column;
    top: 40px;
    left: 0;
    background-color: #f8f8f8;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  }
}

/* 所有 nav-item 统一处理 - 均分宽度 */
.nav .box .nav-box .nav-item {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 52px;
  position: relative;
  box-sizing: border-box;
  background-color: #1656a9;
  /* 所有项均分宽度 */
  flex: 1 1 0;
  min-width: 0;
  padding: 0 5px;
  white-space: nowrap;
}

@media (max-width: 992px) {
  .nav .box .nav-box .nav-item {
    background-color: #f8f8f8;
    align-items: start;
    flex-direction: column;
    width: 100%;
    height: auto;
    flex: none;
    min-width: 0;
    padding: 0;
    border-bottom: 1px solid #e5e5e5;
  }
  .nav .box .nav-box .nav-item:nth-child(3),
  .nav .box .nav-box .nav-item:nth-child(5) {
    display: none;
  }
}

.nav .box .nav-box .nav-item::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  border-width: 0 8px 8px 8px;
  border-style: solid;
  border-color: transparent transparent #fff transparent;
  display: none;
}

.nav .box .nav-box .nav-item:hover::after,
.nav .box .nav-box .nav-item.cur::after {
  display: block;
}

.nav .box .nav-box .nav-item:hover {
  background-color: #2371d5;
}

@media (max-width: 992px) {
  .nav .box .nav-box .nav-item:hover {
    background-color: #f8f8f8;
  }
}

.nav .box .nav-box .nav-item.cur {
  background-color: #2371d5;
}

@media (max-width: 992px) {
  .nav .box .nav-box .nav-item.cur {
    background-color: #f8f8f8;
  }
}

/* 搜索项 - 与普通菜单项完全一致，均分宽度 */
.nav .box .nav-box .nav-item.no-after {
  all: unset;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  /* 与普通菜单项完全相同的flex值 */
  flex: 1 1 0;
  min-width: 0;
  padding: 0 5px;
  position: relative;
  /* background-color: #1656a9; */
  white-space: nowrap;
}

@media (max-width: 992px) {
  .nav .box .nav-box .nav-item.no-after {
    all: unset;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: auto;
    padding: 10px;
    /* background-color: #f8f8f8;
    border-bottom: 1px solid #e5e5e5; */
    flex: none;
  }
}

.nav .box .nav-box .nav-item.no-after::after {
  all: unset;
  content: none !important;
  display: none !important;
}

/* 搜索项hover效果与普通菜单一致 */
.nav .box .nav-box .nav-item:hover {
  background-color: #2371d5;
}
/* 取消最后一个li hover背景 */
.nav .box .nav-box .nav-item:last-child:hover {
  background-color: transparent;
}

.nav .box .nav-box .nav-item .sub {
  font-size: 16px;
  font-weight: 400;
  z-index: 10;
  width: 100px;
  position: absolute;
  background-color: #DB2B02;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  top: 52px;
  display: none;
  padding: 0;
  margin: 0;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.nav .box .nav-box .nav-item .sub:hover {
  display: flex;
}

@media (max-width: 992px) {
  .nav .box .nav-box .nav-item .sub {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    position: static;
    flex-direction: row;
    justify-content: start;
    background-color: transparent;
    margin-top: 5px;
    box-shadow: none;
    padding: 0 10px 10px 10px;
  }
}

.nav .box .nav-box .nav-item .sub .sub-item {
  display: flex;
  height: 52px;
  width: 100%;
  justify-content: center;
  align-items: center;
}

@media (max-width: 992px) {
  .nav .box .nav-box .nav-item .sub .sub-item {
    height: auto;
    width: auto;
    color: #999;
    font-size: 12px;
    margin-right: 10px;
    padding: 0;
    border-bottom: 0;
  }
}

.nav .box .nav-box .nav-item .sub .sub-item:hover {
  background-color: #2371d5;
}



.nav .box .nav-box .nav-item .sub .sub-item a {
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  text-decoration: none;
}

@media (max-width: 992px) {
  .nav .box .nav-box .nav-item .sub .sub-item a {
    color: #999;
    font-size: 14px;
    padding: 5px 10px;
    white-space: nowrap;
  }
}

.nav .box .nav-box li {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  cursor: pointer;
  text-decoration: none;
  color: #FFF;
  list-style: none;
}

@media (max-width: 992px) {
  .nav .box .nav-box li {
    cursor: default;
    justify-content: start;
    height: auto;
    color: #333;
    font-size: 14px;
    padding: 10px;
    border-bottom: 1px solid #e5e5e5;
  }
}

.nav .box .nav-box li:hover {
  color: #FFF;
}

@media (max-width: 992px) {
  .nav .box .nav-box li:hover {
    color: #333;
  }
}

.nav .box .nav-box a {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  cursor: pointer;
  text-decoration: none;
  color: #FFF;
  font-size: 20px;
}

@media (max-width: 992px) {
  .nav .box .nav-box a {
    justify-content: start;
    width: auto;
    height: auto;
    color: #1657a9;
    font-size: 16px;
    padding: 10px 15px;
  }
}

.nav .box .nav-box a:hover {
  color: #FFF;
}

@media (max-width: 992px) {
  .nav .box .nav-box a:hover {
    color: #015293;
  }
}

/* 搜索框样式 - 在均分宽度内自适应 */
.nav .box .nav-box .searchbtn {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  width: 100%;
}

@media (max-width: 992px) {
  .nav .box .nav-box .searchbtn {
    width: 100%;
    justify-content: center;
  }
}



/* 小屏幕下文字大小适配 */
@media (min-width: 993px) and (max-width: 1023px) {
  .nav .box .nav-box .nav-item a {
    font-size: 14px;
  }
  
  .nav .box .nav-box .nav-item .sub {
    width: 80px;
    font-size: 14px;
  }
  
  .sb-search {
    max-width: 180px;
    min-width: 50px;
  }
}

@media (min-width: 1201px) and (max-width: 1400px) {
  .nav .box .nav-box .nav-item a {
    font-size: 16px;
  }
}

/* 超小屏幕下搜索框最小宽度调整 */
@media (max-width: 400px) {
  .sb-search {
    min-width: 40px;
  }
}
.nav .box .menu-btn {
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 3px;
  content: "";
  height: 28px;
  width: 28px;
  background-image: url(../images/menu.svg);
  background-size: 100% 100%;
  display: none;
}
@media (max-width: 992px) {
  .nav .box .menu-btn {
    display: block; /* 小屏幕显示汉堡图标 */
  }
}
/*menu菜单结束*/
.bc {
    height: 40px;
    font-size: 18px;
  display: flex;
  align-items: center;
}
.bc-item {
			color: #1657a9 !important;
		}
.bc a,.bc .gap{
      color: #1657a9 !important;
}
.bc img {
  margin-right: 10px;
  width: 15px;
  height: 14px;
}
/*
.footer {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #1656a9;
  color: #FFFFFF;
  font-size: 12px;
  padding-top: 10px;
  padding-bottom: 10px;
}
.footer a {
  color: #FFF;
}
.footer a:hover {
  color: #FFF;
}
.myfooter{
  margin-top: -15px;
}*/
/* .myfooter {
  margin-top: -15px;
} */

.footer {
  display: flex;
  align-items: center;     /* 垂直居中 */
  justify-content: center; /* 水平居中 */
  gap: 12px;               /* 图片和文字之间留间距 */
  background-color: #1656a9;
  color: #fff;
  font-size: 16px;
  padding: 10px 0;
  margin-top: -16px;
}

.footer-logo img {
  /* 防止图片过大撑高，限制高度 */
  /* height: 24px;
  vertical-align: middle; */
}

.footer-text {
  line-height: 1.5; /* 行高控制文字垂直居中感 */
}

.footer a {
  color: #fff;
  text-decoration: none;
}

.footer a:hover {
  color: #eee;
}
.footer-text p{
  margin: 0 !important;
}
@media (max-width: 820px) {
  .nav .box{
        align-items: center;
  }
}
@media (max-width: 480px) {
  .nav .box{
        align-items: center;
  }
  .bc{
    font-size: 12px;
  }
  .footer{
    font-size: 10px;
  }

}