@import url("theme.css");
* {
  margin: 0;
  padding: 0;
}
a,
li,
p,
span {
  list-style: none;
  color: var(--color-text);
  font-size: 16px;
  text-decoration: none;
}
ul {
  margin-bottom: 0px;
}
a:hover {
  text-decoration: none !important;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: normal;
}
input,
textarea {
  outline: none;
  border: none;
}
* {
  font-family: 'arial';
}
body::-webkit-scrollbar {
  width: 3px;
  height: 0px;
}
body::-webkit-scrollbar-thumb {
  width: 3px;
  background-color: var(--color-primary);
}
.whole {
  overflow: hidden;
}
.whole .unite {
  width: 1400px;
  max-width: 100%;
  margin: auto;

}
.head_bar {
  background-color: var(--color-primary-dark);
  padding: 8px 0;
}
.head_bar .head .welcome p {
  margin-bottom: 0;
  color: #fff;
}
.head_bar .head .information .ico a i {
  color: #fff;
  margin-right: 5px;
}
.head_bar .head .information .hotline span {
  color: #fff;
  text-transform: uppercase;
}
.head_bar .head .information .hotline p {
  margin-bottom: 0;
  color: #fff;
}
.nav_bar {
  overflow: initial;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1111;
  width: 100%;
  transition: all .5s ease;
  -webkit-transition: all .5s ease;
}
.nav_bar .mav_bar_box {
  position: relative;
}
.nav_bar .mav_bar_box .nav {
  padding: 10px 0;
}
.nav_bar .mav_bar_box .nav .menu .menu_ul {
  height: 100%;
  align-items: center;
}
.nav_bar .mav_bar_box .nav .menu .menu_ul li {
  padding-left: 20px;
}
.nav_bar .mav_bar_box .nav .menu .menu_ul li a {
  text-transform: uppercase;
  font-size: 18px;
  color: var(--color-nav);
  font-weight: 600;
  font-weight: bold;
  transition: color 0.3s ease;
}
.nav_bar .mav_bar_box .nav .menu .menu_ul li a:hover,
.nav_bar .mav_bar_box .nav .menu .menu_ul li.active a {
  color: var(--color-primary);
}
.nav_bar .mav_bar_box .nav .menu .menu_ul li.active a {
  position: relative;
}
.nav_bar .mav_bar_box .nav .menu .menu_ul li.active > a::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 2px;
}
.nav_bar .mav_bar_box .nav .menu .menu_ul li.menu_quote_item {
  padding-left: 24px;
}
.nav_bar .mav_bar_box .nav .menu .menu_ul li.menu_quote_item .nav_quote_btn {
  display: inline-block;
  padding: 10px 22px;
  background-color: var(--color-primary);
  color: #fff;
  border-radius: 6px;
  transition: all 0.3s ease;
  -webkit-transition: all 0.3s ease;
}
.nav_bar .mav_bar_box .nav .menu .menu_ul li.menu_quote_item .nav_quote_btn:hover {
  background-color: #fff;
  color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary);
}
.nav_bar .mav_bar_box .nav .menu .menu_ul li.menu_quote_item.active .nav_quote_btn {
  color: #fff;
}
.nav_bar .mav_bar_box .nav .menu .menu_ul li.menu_quote_item.active .nav_quote_btn::before {
  display: none;
}
.nav_bar .mav_bar_box .secondary .sec_width ul li.active .sec_pro {
  background-color: var(--color-primary);
}
.nav_bar .mav_bar_box .secondary .sec_width ul li.active .sec_pro .sec_pro_text span {
  color: var(--color-white);
}
.nav_bar .mav_bar_box .secondary {
  position: absolute;
  left: 0;
  bottom: 0;
  transform: translateY(100%);
  width: 100%;
}
.nav_bar .mav_bar_box .secondary .sec_width {
  display: none;
  width: 1400px;
  max-width: 100%;
  background-color: #f8f8f8;
  margin: auto;
}
.nav_bar .mav_bar_box .secondary .sec_width ul {
  display: flex;
  flex-wrap: wrap;
}
.nav_bar .mav_bar_box .secondary .sec_width ul li {
  width: 33.33%;
  padding: 20px;
}
.nav_bar .mav_bar_box .secondary .sec_width ul li .sec_pro {
  transition: all .5s ease;
  -webkit-transition: all .5s ease;
}
.nav_bar .mav_bar_box .secondary .sec_width ul li .sec_pro:hover {
  background-color: var(--color-primary);
}
.nav_bar .mav_bar_box .secondary .sec_width ul li .sec_pro:hover a .sec_pro_text span {
  color: #fff;
}
.nav_bar .mav_bar_box .secondary .sec_width ul li .sec_pro a {
  padding: 10px;
  display: flex;
  align-items: center;
}
.nav_bar .mav_bar_box .secondary .sec_width ul li .sec_pro a .sec_pro_img {
  width: 100px;
}
.nav_bar .mav_bar_box .secondary .sec_width ul li .sec_pro a .sec_pro_img img {
  width: 100%;
}
.nav_bar .mav_bar_box .secondary .sec_width ul li .sec_pro a .sec_pro_text span {
  margin-left: 15px;
  text-transform: uppercase;
}
#demo {
  width: 1920px;
  max-width: 100%;
  margin: auto;
}
#demo img {
  width: 100%;
}
.products_bar {
  padding: 100px 0;
}
.products_bar .title {
  margin-bottom: 50px;
}
.products_bar .title p {
  margin: 0 auto;
  color: var(--color-heading);
  width: 60%;
  font-size: 40px;
  text-align: center;
  font-weight: 600;
  font-weight: bold;
  text-transform: uppercase;
}
.products_bar .products {
  background-color: var(--color-bg);
  padding: 30px 15px;
  display: flex;
  justify-content: space-between;
  margin-bottom: 30px;
}
.products_bar .products .left {
  display: flex;
  justify-content: space-between;
  flex-direction: column;
  flex: 1;
}
.products_bar .products .left span {
  font-size: 20px;
  font-weight: 600;
  font-weight: bold;
  text-transform: uppercase;
}
.products_bar .products .left a {
  display: inline-block;
  background-color: var(--color-primary);
  padding: 5px 25px;
  border-radius: 30px;
  text-align: center;
  color: #fff;
  font-size: 14px;
  transition: background-color 0.3s ease, color 0.3s ease;
}
.products_bar .products .left a:hover {
  background-color: #27AE60;
  color: #fff;
}
.products_bar .products .right {
  height: 167px;
}
.advantage {
  width: 1920px;
  max-width: 100%;
  margin: auto;
  display: flex;
}
.advantage .ad_img {
  width: 50%;
  position: relative;
  background: url(https://zheng-mi.s3.us-east-2.amazonaws.com/www.aemkplaspack.com/img/ad_bg.jpg);
}
.advantage .ad_img .ad_title {
  position: absolute;
  right: 0;
  top: 100px;
  background: rgba(var(--color-primary-r), var(--color-primary-g), var(--color-primary-b), 0.9);
  padding: 30px;
}
.advantage .ad_img .ad_title span {
  font-size: 40px;
  color: #fff;
  font-weight: 600;
  font-weight: bold;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 20px;
  display: block;
}
.advantage .ad_img .ad_title span::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100px;
  height: 8px;
  background-color: #fff;
}
.advantage .ad_img .ad_title p {
  color: #fff;
  margin-top: 15px;
  width: 80%;
}
.advantage .ad_content {
  background-color: var(--color-primary);
  width: 50%;
  padding: 50px;
}
.advantage .ad_content ul {
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
}
.advantage .ad_content ul li {
  display: flex;
  margin: 35px 0;
}
.advantage .ad_content ul li .ad_ico {
  width: 50px;
  display: flex;
  align-items: center;
}
.advantage .ad_content ul li .ad_ico img {
  width: 100%;
}
.advantage .ad_content ul li .ad_text {
  padding-left: 15px;
}
.advantage .ad_content ul li .ad_text span {
  color: #fff;
  font-weight: 600;
  font-weight: bold;
  text-transform: uppercase;
}
.advantage .ad_content ul li .ad_text p {
  color: #fff;
  margin-bottom: 0;
}
.news {
  background-color: var(--color-bg-alt);
}
.news .unite {
  padding: 100px 0;
}
.news .unite .title {
  margin-bottom: 50px;
}
.news .unite .title p {
  margin: 0 auto;
  width: 60%;
  color: var(--color-heading);
  font-size: 40px;
  text-align: center;
  font-weight: 600;
  font-weight: bold;
  text-transform: uppercase;
}
.news .unite .news_list {
  background-color: #fff;
  position: relative;
  margin-bottom: 30px;
}
.news .unite .news_list:hover {
  background-color: var(--color-primary);
  transition: all .5s ease;
  -webkit-transition: all .5s ease;
  box-shadow: 0px 0px 5px #666;
  transform: translate(0px, -5px);
  -ms-transform: translate(0px, -5px);
  /* IE 9 */
  -webkit-transform: translate(0px, -5px);
  /* Safari and Chrome */
}
.news .unite .news_list:hover a span {
  color: #fff;
}
.news .unite .news_list:hover a i {
  color: #fff;
}
.news .unite .news_list:hover a p {
  color: #fff;
}
.news .unite .news_list a {
  display: inline-block;
  padding: 15px;
}
.news .unite .news_list a span {
  font-size: 20px;
  color: #000;
  display: block;
  font-weight: 600;
  font-weight: bold;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}
.news .unite .news_list a i {
  font-size: 14px;
  color: var(--color-text);
}
.news .unite .news_list a p {
  color: #333;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
.news .unite .news_list a .news_ico {
  font-size: 23px;
  position: absolute;
  top: 0;
  right: 0;
  transform: translate(-100%, 50%);
}
.news .unite .btn_box {
  text-align: center;
}
.news .unite .btn_box a {
  margin-top: 20px;
  display: inline-block;
  color: #fff;
  background-color: var(--color-primary);
  padding: 5px 25px;
}
.about {
  width: 1920px;
  max-width: 100%;
  margin: auto;
  display: flex;
}
.about .ab_left {
  width: 50%;
  display: flex;
  justify-content: flex-end;
}
.about .ab_left .ab_text {
  width: 70%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.about .ab_left .ab_text span {
  font-size: 40px;
  color: #333;
  position: relative;
  padding-bottom: 25px;
  display: block;
  margin-bottom: 20px;
  font-weight: 600;
  font-weight: bold;
  text-transform: uppercase;
}
.about .ab_left .ab_text span::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100px;
  height: 8px;
  background-color: #333;
}
.about .ab_left .ab_text .ab_contont {
  margin-bottom: 20px;
}
.about .ab_left .ab_text .ab_contont p {
  width: 90%;
  font-size: 18px;
  line-height: 1.75;
  margin: 0 0 14px;
  text-align: justify;
  text-align-last: left;
  hyphens: auto;
  word-spacing: normal;
}
.about .ab_left .ab_text .ab_contont p:last-child {
  margin-bottom: 0;
}
.about .ab_left .ab_text .ab_bnt a {
  display: inline-block;
  background-color: var(--color-primary);
  padding: 10px 50px;
  color: #fff;
}
.about .ab_right {
  width: 50%;

}
.about .ab_right .ab_img {
  height: 100%;
  overflow: hidden;
}

.about .ab_right .ab_img img {
  width: 100%;

  object-fit: cover;
  display: block;
}
.partner {
  background-color: var(--color-bg-alt);
}
.partner .unite {
  padding: 100px 0;
}
.partner .unite .title {
  margin-bottom: 50px;
}
.partner .unite .title p {
  margin: 0 auto;
  width: 60%;
  color: var(--color-heading);
  font-size: 40px;
  text-align: center;
  font-weight: 600;
  font-weight: bold;
  text-transform: uppercase;
}
.partner .unite .partner_img ul {
  display: flex;
}
.partner .unite .partner_img ul li {
  width: 20%;
  padding: 0 15px;
}
.partner .unite .partner_img ul li img {
  width: 100%;
}
.footer {
  background-color: var(--color-primary);
}
.footer .unite {
  padding-top: 70px;
  padding-bottom: 30px;
}
.footer .unite .list_title {
  margin-bottom: 25px;
}
.footer .unite .list_title span {
  font-size: 18px;
  font-weight: bold;
  font-weight: 600;
  color: #fff;
  position: relative;
  padding-bottom: 5px;
}
.footer .unite .list_title span::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 50px;
  height: 4px;
  background-color: #fff;
}
.footer .unite .footer_about p {
  color: #fff;
  margin-bottom: 5px;
}
.footer .unite .footer_list {
  padding-left: 30px;
}
.footer .unite .footer_list ul li i {
  color: #fff;
}
.footer .unite .footer_list ul li a {
  color: #fff;
}
.footer .unite .footer_contact .cont .cont_btn {
  text-align: end;
}
.footer .unite .footer_contact .cont .cont_btn a {
  display: inline-block;
  border: 1px solid #fff;
  padding: 10px 50px;
  color: #fff;
}
.footer .unite .footer_contact .cont .con_ico {
  display: flex;
  margin-top: 25px;
  justify-content: flex-end;
}
.footer .unite .footer_contact .cont .con_ico li {
  margin-left: 15px;
}
.footer .unite .footer_contact .cont .con_ico li a i {
  color: #fff;
  font-size: 30px;
}
.copyright {
  background-color: var(--color-primary-dark);
  text-align: center;
  padding: 15px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.35);
}
.copyright p {
  color: #fff;
  margin-bottom: 0;
  font-size: 16px;
}
.copyright p a {
  font-size: 16px;
  color: #fff;
}
@media only screen and (max-width: 1400px) {
  .whole .unite {
    max-width: 95%;
    padding: 0 20px;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul li {
    padding-left: 40px;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul li a {
    font-size: 17px;
  }
  .products_bar {
    padding: 80px 0;
  }
  .products_bar .title {
    margin-bottom: 40px;
  }
  .products_bar .title p {
    font-size: 32px;
    width: 70%;
  }
  .products_bar .products {
    padding: 25px 15px;
    margin-bottom: 25px;
  }
  .products_bar .products .left span {
    font-size: 19px;
  }
  .products_bar .products .right {
    height: 160px;
    width: 50%;
  }
  .advantage {
    width: 100%;
  }
  .advantage .ad_img .ad_title {
    padding: 20px;
    top: 80px;
  }
  .advantage .ad_img .ad_title span {
    font-size: 32px;
    padding-bottom: 18px;
  }
  .advantage .ad_img .ad_title p {
    font-size: 15px;
    margin-top: 12px;
  }
  .advantage .ad_content {
    padding: 45px;
  }
  .advantage .ad_content ul li {
    margin: 30px 0;
  }
  .advantage .ad_content ul li .ad_text span {
    font-size: 19px;
  }
  .advantage .ad_content ul li .ad_text p {
    font-size: 15px;
  }
  .news .unite {
    padding: 80px 0;
  }
  .news .unite .title {
    margin-bottom: 40px;
  }
  .news .unite .title p {
    font-size: 32px;
    width: 70%;
  }
  .news .unite .news_list {
    margin-bottom: 25px;
  }
  .news .unite .news_list a span {
    font-size: 19px;
  }
  .about {
    width: 100%;
  }
  .about .ab_left .ab_text {
    width: 85%;
  }
  .about .ab_left .ab_text span {
    font-size: 32px;
    margin-bottom: 40px;
    padding-bottom: 22px;
  }
  .about .ab_left .ab_text .ab_contont {
    margin-bottom: 40px;
  }
  .about .ab_left .ab_text .ab_contont p {
    font-size: 17px;
  }
  .about .ab_right {
    height: 750px;
  }
  .partner .unite {
    padding: 80px 0;
  }
  .partner .unite .title {
    margin-bottom: 40px;
  }
  .partner .unite .title p {
    font-size: 32px;
    width: 70%;
  }
  .footer .unite {
    padding-top: 60px;
    padding-bottom: 25px;
  }
  .footer .unite .list_title span {
    font-size: 17px;
  }
  .footer .unite .footer_about p {
    font-size: 15px;
  }
}
@media only screen and (max-width: 1200px) {
  .whole .unite {
    padding: 0 15px;
  }
  .nav_bar .mav_bar_box .nav .logo {
    width: 160px;
  }
  .nav_bar .mav_bar_box .nav .logo a {
    display: inline-block;
  }
  .nav_bar .mav_bar_box .nav .logo a img {
    width: 100%;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul li {
    padding-left: 18px;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul li a {
    font-size: 16px;
  }
  .products_bar {
    padding: 60px 0;
  }
  .products_bar .title {
    margin-bottom: 35px;
  }
  .products_bar .title p {
    font-size: 28px;
    width: 75%;
  }
  .products_bar .products {
    padding: 22px 12px;
    margin-bottom: 22px;
  }
  .products_bar .products .left span {
    font-size: 18px;
  }
  .products_bar .products .left a {
    padding: 5px 22px;
    font-size: 13px;
  }
  .products_bar .products .right {
    height: 150px;
    width: 48%;
  }
  .advantage .ad_img .ad_title {
    width: 85%;
    padding: 18px;
    top: 70px;
  }
  .advantage .ad_img .ad_title span {
    font-size: 28px;
    padding-bottom: 16px;
  }
  .advantage .ad_img .ad_title p {
    font-size: 14px;
    margin-top: 10px;
  }
  .advantage .ad_content {
    padding: 35px;
  }
  .advantage .ad_content ul li {
    margin: 25px 0;
  }
  .advantage .ad_content ul li .ad_ico {
    width: 45px;
  }
  .advantage .ad_content ul li .ad_text {
    padding-left: 12px;
  }
  .advantage .ad_content ul li .ad_text span {
    font-size: 18px;
  }
  .advantage .ad_content ul li .ad_text p {
    font-size: 14px;
  }
  .news .unite {
    padding: 60px 0;
  }
  .news .unite .title {
    margin-bottom: 35px;
  }
  .news .unite .title p {
    font-size: 28px;
    width: 75%;
  }
  .news .unite .news_list {
    margin-bottom: 22px;
  }
  .news .unite .news_list a {
    padding: 12px;
  }
  .news .unite .news_list a span {
    font-size: 18px;
  }
  .news .unite .news_list a p {
    font-size: 14px;
  }
  .about .ab_left {
    padding: 40px;
  }
  .about .ab_left .ab_text span {
    font-size: 28px;
    margin-bottom: 35px;
    padding-bottom: 20px;
  }
  .about .ab_left .ab_text .ab_contont {
    margin-bottom: 35px;
  }
  .about .ab_left .ab_text .ab_contont p {
    font-size: 16px;
  }
  .about .ab_right {
    height: 600px;
  }
  .partner .unite {
    padding: 60px 0;
  }
  .partner .unite .title {
    margin-bottom: 35px;
  }
  .partner .unite .title p {
    font-size: 28px;
    width: 75%;
  }
  .footer .unite {
    padding-top: 50px;
    padding-bottom: 20px;
  }
  .footer .unite .list_title span {
    font-size: 16px;
  }
  .footer .unite .footer_about p {
    font-size: 14px;
  }
}
@media only screen and (max-width: 991px) {
  .whole .unite {
    max-width: 100%;
    padding: 0 15px;
  }
  .head_bar {
    display: none;
  }
  .nav_bar {
    background-color: #fff;
  }
  .nav_bar .mav_bar_box {
    position: relative;
  }
  .nav_bar .mav_bar_box .nav {
    padding: 8px 0;
  }
  .nav_bar .mav_bar_box .nav .md_btn {
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0 15px;
  }
  .nav_bar .mav_bar_box .nav .md_btn i {
    font-size: 30px;
    color: #333;
  }
  .nav_bar .mav_bar_box .nav .menu {
    position: fixed;
    left: 0 !important;
    right: 0 !important;
    width: 100vw !important;
    max-width: 100vw !important;
    background-color: var(--color-bg);
    display: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin: 0 !important;
    padding: 0 !important;
    z-index: 1110;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul {
    flex-direction: column;
    align-items: initial;
    padding: 0;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul li {
    border-bottom: 1px solid #e0e0e0;
    padding-left: 0;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul li:last-child {
    border-bottom: none;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul li a {
    padding: 12px 20px;
    display: block;
    position: relative;
    font-size: 16px;
    width: 100%;
    margin: 0;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul li a::after {
    content: '>';
    position: absolute;
    color: var(--color-text);
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul li.menu_quote_item .nav_quote_btn {
    display: block;
    width: calc(100% - 40px);
    margin: 10px 20px;
    text-align: center;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul li.menu_quote_item .nav_quote_btn::after {
    display: none;
  }
  #demo {
    width: 100%;
  }
  .products_bar {
    padding: 50px 0;
  }
  .products_bar .title {
    margin-bottom: 30px;
  }
  .products_bar .title p {
    font-size: 26px;
    width: 85%;
  }
  .products_bar .products {
    padding: 20px 15px;
    margin-bottom: 20px;
  }
  .products_bar .products .left span {
    font-size: 17px;
  }
  .products_bar .products .right {
    height: 140px;
  }
  .products_bar .products .right img {
    max-width: 100%;
    height: 100%;
    object-fit: contain;
  }
  .advantage {
    width: 100%;
    flex-direction: column;
  }
  .advantage .ad_img {
    width: 100%;
    min-height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .advantage .ad_img .ad_title {
    position: relative;
    right: auto;
    top: auto;
    transform: none;
    width: 90%;
    max-width: 500px;
    padding: 25px;
  }
  .advantage .ad_img .ad_title span {
    font-size: 26px;
    padding-bottom: 15px;
  }
  .advantage .ad_img .ad_title p {
    font-size: 14px;
    width: 100%;
  }
  .advantage .ad_content {
    width: 100%;
    padding: 40px 30px;
  }
  .advantage .ad_content ul li {
    margin: 25px 0;
  }
  .advantage .ad_content ul li .ad_ico {
    width: 45px;
  }
  .advantage .ad_content ul li .ad_text {
    padding-left: 12px;
  }
  .advantage .ad_content ul li .ad_text span {
    font-size: 17px;
  }
  .advantage .ad_content ul li .ad_text p {
    font-size: 14px;
  }
  .news .unite {
    padding: 50px 0;
  }
  .news .unite .title {
    margin-bottom: 30px;
  }
  .news .unite .title p {
    font-size: 26px;
    width: 85%;
  }
  .news .unite .news_list {
    margin-bottom: 20px;
  }
  .news .unite .news_list a {
    padding: 15px;
  }
  .news .unite .news_list a span {
    font-size: 17px;
  }
  .news .unite .news_list a p {
    font-size: 14px;
  }
  .about {
    width: 100%;
    flex-direction: column;
  }
  .about .ab_left {
    width: 100%;
    padding: 40px 30px;
  }
  .about .ab_left .ab_text {
    width: 100%;
  }
  .about .ab_left .ab_text span {
    font-size: 26px;
    margin-bottom: 30px;
    padding-bottom: 18px;
  }
  .about .ab_left .ab_text .ab_contont {
    margin-bottom: 25px;
  }
  .about .ab_left .ab_text .ab_contont p {
    width: 100%;
    font-size: 15px;
  }
  .about .ab_left .ab_text .ab_bnt a {
    padding: 10px 40px;
    font-size: 14px;
  }
  .about .ab_right {
    width: 100%;
    height: 450px;
  }
  .about .ab_right .ab_img img {
    width: 100%;

    object-fit: cover;
  }
  .partner .unite {
    padding: 50px 0;
  }
  .partner .unite .title {
    margin-bottom: 30px;
  }
  .partner .unite .title p {
    font-size: 26px;
    width: 85%;
  }
  .footer .unite {
    padding-top: 40px;
    padding-bottom: 20px;
  }
  .footer .unite .footer_about,
  .footer .unite .footer_list {
    margin-bottom: 30px;
  }
  .footer .unite .footer_list {
    padding-left: 0;
  }
  .footer .unite .footer_contact .cont {
    margin-top: 25px;
  }
  .footer .unite .footer_contact .cont .cont_btn {
    text-align: center;
  }
  .footer .unite .footer_contact .cont .cont_btn a {
    padding: 10px 40px;
    font-size: 14px;
  }
  .footer .unite .footer_contact .cont .con_ico {
    justify-content: space-around;
    margin-top: 20px;
  }
  .footer .unite .footer_contact .cont .con_ico li {
    margin: 0 5px;
  }
  .copyright {
    padding: 12px 0;
  }
  .copyright p {
    font-size: 14px;
    padding: 0 15px;
  }
  .copyright p a {
    font-size: 14px;
  }
}
@media only screen and (max-width: 768px) {
  .whole .unite {
    padding: 0 12px;
  }
  .nav_bar .mav_bar_box .nav {
    padding: 6px 0;
  }
  .nav_bar .mav_bar_box .nav .md_btn {
    padding: 0 12px;
  }
  .nav_bar .mav_bar_box .nav .md_btn i {
    font-size: 28px;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul li a {
    padding: 10px 15px;
    font-size: 15px;
    width: 100%;
    margin: 0;
  }
  .products_bar {
    padding: 40px 0;
  }
  .products_bar .title {
    margin-bottom: 25px;
  }
  .products_bar .title p {
    font-size: 24px;
    width: 90%;
  }
  .products_bar .products {
    padding: 18px 12px;
    margin-bottom: 18px;
  }
  .products_bar .products .left span {
    font-size: 16px;
  }
  .products_bar .products .left a {
    padding: 5px 20px;
    font-size: 12px;
  }
  .products_bar .products .right {
    height: 120px;
  }
  .products_bar .products .right img {
    max-width: 100%;
    height: 100%;
    object-fit: contain;
  }
  .advantage .ad_img {
    min-height: 300px;
  }
  .advantage .ad_img .ad_title {
    padding: 20px;
    width: 85%;
  }
  .advantage .ad_img .ad_title span {
    font-size: 24px;
    padding-bottom: 12px;
  }
  .advantage .ad_img .ad_title p {
    font-size: 13px;
  }
  .advantage .ad_content {
    padding: 30px 20px;
  }
  .advantage .ad_content ul li {
    margin: 20px 0;
  }
  .advantage .ad_content ul li .ad_ico {
    width: 40px;
  }
  .advantage .ad_content ul li .ad_text {
    padding-left: 10px;
  }
  .advantage .ad_content ul li .ad_text span {
    font-size: 16px;
  }
  .advantage .ad_content ul li .ad_text p {
    font-size: 13px;
  }
  .news .unite {
    padding: 40px 0;
  }
  .news .unite .title {
    margin-bottom: 25px;
  }
  .news .unite .title p {
    font-size: 24px;
    width: 90%;
  }
  .news .unite .news_list {
    margin-bottom: 18px;
  }
  .news .unite .news_list a {
    padding: 12px;
  }
  .news .unite .news_list a span {
    font-size: 16px;
  }
  .news .unite .news_list a p {
    font-size: 13px;
  }
  .about .ab_left {
    padding: 30px 20px;
  }
  .about .ab_left .ab_text span {
    font-size: 24px;
    margin-bottom: 25px;
    padding-bottom: 15px;
  }
  .about .ab_left .ab_text .ab_contont {
    margin-bottom: 20px;
  }
  .about .ab_left .ab_text .ab_contont p {
    font-size: 14px;
  }
  .about .ab_left .ab_text .ab_bnt a {
    padding: 8px 35px;
    font-size: 13px;
  }
  .about .ab_right {
    height: 400px;
  }
  .partner .unite {
    padding: 40px 0;
  }
  .partner .unite .title {
    margin-bottom: 25px;
  }
  .partner .unite .title p {
    font-size: 24px;
    width: 90%;
  }
  .footer .unite {
    padding-top: 35px;
    padding-bottom: 18px;
  }
  .footer .unite .footer_about,
  .footer .unite .footer_list {
    margin-bottom: 25px;
  }
  .footer .unite .list_title span {
    font-size: 15px;
  }
  .footer .unite .footer_about p {
    font-size: 13px;
  }
  .footer .unite .footer_contact .cont .cont_btn a {
    padding: 8px 35px;
    font-size: 13px;
  }
  .footer .unite .footer_contact .cont .con_ico li a i {
    font-size: 20px;
  }
  .copyright {
    padding: 10px 0;
  }
  .copyright p {
    font-size: 13px;
  }
  .copyright p a {
    font-size: 13px;
  }
}
@media only screen and (max-width: 576px) {
  .whole .unite {
    padding: 0 10px;
  }
  .nav_bar .mav_bar_box .nav .logo {
    width: 140px;
  }
  .nav_bar .mav_bar_box .nav .md_btn {
    padding: 0 10px;
  }
  .nav_bar .mav_bar_box .nav .md_btn i {
    font-size: 26px;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul li a {
    padding: 10px 15px;
    font-size: 14px;
    width: 100%;
    margin: 0;
  }
  .products_bar {
    padding: 30px 0;
  }
  .products_bar .title {
    margin-bottom: 20px;
  }
  .products_bar .title p {
    width: 100%;
    font-size: 22px;
  }
  .products_bar .products {
    padding: 15px 10px;
    margin-bottom: 15px;
  }
  .products_bar .products .left span {
    font-size: 15px;
  }
  .products_bar .products .left a {
    padding: 5px 18px;
    font-size: 11px;
  }
  .products_bar .products .right {
    height: 100px;
  }
  .products_bar .products .right img {
    max-width: 100%;
    height: 100%;
    object-fit: contain;
  }
  .advantage .ad_img {
    min-height: 250px;
  }
  .advantage .ad_img .ad_title {
    padding: 18px;
    width: 90%;
  }
  .advantage .ad_img .ad_title span {
    font-size: 22px;
    padding-bottom: 10px;
  }
  .advantage .ad_img .ad_title p {
    font-size: 12px;
  }
  .advantage .ad_content {
    padding: 25px 15px;
  }
  .advantage .ad_content ul li {
    margin: 18px 0;
  }
  .advantage .ad_content ul li .ad_ico {
    width: 35px;
  }
  .advantage .ad_content ul li .ad_text {
    padding-left: 8px;
  }
  .advantage .ad_content ul li .ad_text span {
    font-size: 15px;
  }
  .advantage .ad_content ul li .ad_text p {
    font-size: 12px;
  }
  .news .unite {
    padding: 30px 0;
  }
  .news .unite .title {
    margin-bottom: 20px;
  }
  .news .unite .title p {
    width: 100%;
    font-size: 22px;
  }
  .news .unite .news_list {
    margin-bottom: 15px;
  }
  .news .unite .news_list a {
    padding: 12px;
    display: block;
  }
  .news .unite .news_list a span {
    font-size: 15px;
  }
  .news .unite .news_list a p {
    font-size: 12px;
    margin-bottom: 0;
  }
  .news .unite .news_list a .news_ico {
    display: none;
  }
  .news .unite .btn_box a {
    margin-top: 0;
    padding: 5px 20px;
    font-size: 12px;
  }
  .about .ab_left {
    padding: 25px 15px;
  }
  .about .ab_left .ab_text span {
    margin-bottom: 20px;
    font-size: 22px;
    padding-bottom: 12px;
  }
  .about .ab_left .ab_text .ab_contont {
    margin-bottom: 18px;
  }
  .about .ab_left .ab_text .ab_contont p {
    font-size: 13px;
  }
  .about .ab_left .ab_text .ab_bnt a {
    padding: 8px 30px;
    font-size: 12px;
  }
  .about .ab_right {
    height: 350px;
  }
  .partner .unite {
    padding: 30px 0;
  }
  .partner .unite .title {
    margin-bottom: 20px;
  }
  .partner .unite .title p {
    width: 100%;
    font-size: 22px;
  }
  .partner .unite .partner_img ul li {
    width: 50%;
    padding: 0 10px;
  }
  .footer .unite {
    padding-top: 30px;
    padding-bottom: 15px;
  }
  .footer .unite .footer_about,
  .footer .unite .footer_list {
    margin-bottom: 20px;
  }
  .footer .unite .list_title span {
    font-size: 14px;
  }
  .footer .unite .footer_about p {
    font-size: 12px;
  }
  .footer .unite .footer_contact .cont .cont_btn a {
    padding: 8px 30px;
    font-size: 12px;
  }
  .footer .unite .footer_contact .cont .con_ico {
    margin-top: 15px;
  }
  .footer .unite .footer_contact .cont .con_ico li {
    margin: 0 3px;
  }
  .footer .unite .footer_contact .cont .con_ico li a i {
    font-size: 18px;
  }
  .copyright {
    padding: 8px 0;
  }
  .copyright p {
    font-size: 12px;
    padding: 0 10px;
    line-height: 1.6;
  }
  .copyright p a {
    font-size: 12px;
  }
}
@media only screen and (max-width: 480px) {
  .whole .unite {
    padding: 0 8px;
  }
  .nav_bar .mav_bar_box .nav .logo {
    width: 120px;
  }
  .nav_bar .mav_bar_box .nav {
    padding: 5px 0;
  }
  .nav_bar .mav_bar_box .nav .md_btn {
    padding: 0 8px;
  }
  .nav_bar .mav_bar_box .nav .md_btn i {
    font-size: 24px;
  }
  .nav_bar .mav_bar_box .nav .menu .menu_ul li a {
    padding: 8px 12px;
    font-size: 13px;
    width: 100%;
    margin: 0;
  }
  .products_bar {
    padding: 25px 0;
  }
  .products_bar .title {
    margin-bottom: 18px;
  }
  .products_bar .title p {
    font-size: 20px;
  }
  .products_bar .products {
    padding: 12px 8px;
    margin-bottom: 12px;
  }
  .products_bar .products .left span {
    font-size: 14px;
  }
  .products_bar .products .left a {
    padding: 4px 15px;
    font-size: 10px;
  }
  .products_bar .products .right {
    height: 80px;
  }
  .products_bar .products .right img {
    max-width: 100%;
    height: 100%;
    object-fit: contain;
  }
  .advantage .ad_img {
    min-height: 220px;
  }
  .advantage .ad_img .ad_title {
    padding: 15px;
    width: 95%;
  }
  .advantage .ad_img .ad_title span {
    font-size: 20px;
    padding-bottom: 8px;
  }
  .advantage .ad_img .ad_title span::after {
    width: 60px;
    height: 4px;
  }
  .advantage .ad_img .ad_title p {
    font-size: 11px;
    margin-top: 8px;
  }
  .advantage .ad_content {
    padding: 20px 12px;
  }
  .advantage .ad_content ul li {
    margin: 15px 0;
  }
  .advantage .ad_content ul li .ad_ico {
    width: 30px;
  }
  .advantage .ad_content ul li .ad_text {
    padding-left: 6px;
  }
  .advantage .ad_content ul li .ad_text span {
    font-size: 14px;
  }
  .advantage .ad_content ul li .ad_text p {
    font-size: 11px;
  }
  .news .unite {
    padding: 25px 0;
  }
  .news .unite .title {
    margin-bottom: 18px;
  }
  .news .unite .title p {
    font-size: 20px;
  }
  .news .unite .news_list {
    margin-bottom: 12px;
  }
  .news .unite .news_list a {
    padding: 10px;
  }
  .news .unite .news_list a span {
    font-size: 14px;
  }
  .news .unite .news_list a p {
    font-size: 11px;
  }
  .news .unite .btn_box a {
    padding: 4px 18px;
    font-size: 11px;
  }
  .about .ab_left {
    padding: 20px 12px;
  }
  .about .ab_left .ab_text span {
    margin-bottom: 18px;
    font-size: 20px;
    padding-bottom: 10px;
  }
  .about .ab_left .ab_text span::after {
    width: 60px;
    height: 4px;
  }
  .about .ab_left .ab_text .ab_contont {
    margin-bottom: 15px;
  }
  .about .ab_left .ab_text .ab_contont p {
    font-size: 12px;
  }
  .about .ab_left .ab_text .ab_bnt a {
    padding: 6px 25px;
    font-size: 11px;
  }
  .about .ab_right {
    height: 300px;
  }
  .partner .unite {
    padding: 25px 0;
  }
  .partner .unite .title {
    margin-bottom: 18px;
  }
  .partner .unite .title p {
    font-size: 20px;
  }
  .partner .unite .partner_img ul li {
    width: 50%;
    padding: 0 8px;
    margin-bottom: 10px;
  }
  .footer .unite {
    padding-top: 25px;
    padding-bottom: 12px;
  }
  .footer .unite .footer_about,
  .footer .unite .footer_list {
    margin-bottom: 18px;
  }
  .footer .unite .list_title {
    margin-bottom: 15px;
  }
  .footer .unite .list_title span {
    font-size: 13px;
  }
  .footer .unite .footer_about p {
    font-size: 11px;
  }
  .footer .unite .footer_contact .cont .cont_btn a {
    padding: 6px 25px;
    font-size: 11px;
  }
  .footer .unite .footer_contact .cont .con_ico {
    margin-top: 12px;
    flex-wrap: wrap;
  }
  .footer .unite .footer_contact .cont .con_ico li {
    margin: 5px;
  }
  .footer .unite .footer_contact .cont .con_ico li a i {
    font-size: 16px;
  }
  .copyright {
    padding: 8px 0;
  }
  .copyright p {
    font-size: 11px;
    padding: 0 8px;
    line-height: 1.8;
  }
  .copyright p a {
    font-size: 11px;
  }
}

/* ============================================
   大屏幕适配 - 2K/4K等高分辨率屏幕
   ============================================ */

/* 移除1920px宽度限制 (1920px及以上) */
@media only screen and (min-width: 1920px) {
  #demo {
    width: 100%;
    max-width: 100%;
  }
  
  .advantage {
    width: 100%;
    max-width: 100%;
  }
  
  .about {
    width: 100%;
    max-width: 100%;
  }
}

/* 2K屏幕适配 (2560px及以上) */
@media only screen and (min-width: 2560px) {
  /* 基础文字大小和行高调整 */
  body {
    font-size: 18px;
    line-height: 1.8;
  }
  
  a, li, p, span {
    font-size: 18px;
    line-height: 1.8;
  }
  
  /* 头部导航栏 */
  .head_bar {
    padding: 15px 0;
  }
  
  .head_bar .head .welcome p {
    font-size: 20px;
    letter-spacing: 0.8px;
    line-height: 1.6;
  }
  
  .head_bar .head .information .hotline span {
    font-size: 20px;
    margin-right: 10px;
  }
  
  .head_bar .head .information .hotline p {
    font-size: 22px;
  }
  
  .head_bar .head .information .ico a i {
    font-size: 24px;
    margin-right: 10px;
  }
  
  .nav_bar .mav_bar_box .nav {
    padding: 15px 0;
  }
  
  .whole .unite {
    width: 1800px;
    max-width: 70%;
  }
  
  .nav_bar .mav_bar_box .secondary .sec_width {
    width: 1800px;
    max-width: 70%;
  }
  
  .nav_bar .mav_bar_box .nav .menu .menu_ul li {
    padding-left: 60px;
  }
  
  .nav_bar .mav_bar_box .nav .menu .menu_ul li a {
    font-size: 20px;
    letter-spacing: 1px;
    line-height: 1.5;
  }
  
  /* 二级菜单 */
  .nav_bar .mav_bar_box .secondary .sec_width ul li {
    padding: 30px;
  }
  
  .nav_bar .mav_bar_box .secondary .sec_width ul li .sec_pro a {
    padding: 15px;
  }
  
  .nav_bar .mav_bar_box .secondary .sec_width ul li .sec_pro a .sec_pro_img {
    width: 120px;
  }
  
  .nav_bar .mav_bar_box .secondary .sec_width ul li .sec_pro a .sec_pro_text span {
    font-size: 18px;
    margin-left: 20px;
    letter-spacing: 0.5px;
  }
  
  #demo {
    width: 100%;
    max-width: 100%;
  }
  
  /* 产品区域 */
  .products_bar {
    padding: 140px 0;
  }
  
  .products_bar .title {
    margin-bottom: 70px;
  }
  
  .products_bar .title p {
    font-size: 52px;
    width: 50%;
    letter-spacing: 2px;
    line-height: 1.4;
  }
  
  .products_bar .products {
    padding: 45px 30px;
    margin-bottom: 40px;
  }
  
  .products_bar .products .left span {
    font-size: 26px;
    letter-spacing: 1px;
    line-height: 1.6;
    margin-bottom: 15px;
  }
  
  .products_bar .products .left a {
    padding: 10px 35px;
    font-size: 17px;
    letter-spacing: 0.5px;
    border-radius: 35px;
  }
  
  .products_bar .products .right {
    height: 220px;
  }
  
  /* 优势区域 */
  .advantage {
    width: 100%;
    max-width: 100%;
  }
  
  .advantage .ad_img .ad_title {
    padding: 50px;
    top: 140px;
  }
  
  .advantage .ad_img .ad_title span {
    font-size: 52px;
    padding-bottom: 30px;
    letter-spacing: 2px;
    line-height: 1.3;
  }
  
  .advantage .ad_img .ad_title span::after {
    width: 130px;
    height: 11px;
  }
  
  .advantage .ad_img .ad_title p {
    font-size: 19px;
    margin-top: 25px;
    line-height: 1.8;
    letter-spacing: 0.5px;
  }
  
  .advantage .ad_content {
    padding: 70px;
  }
  
  .advantage .ad_content ul li {
    margin: 45px 0;
  }
  
  .advantage .ad_content ul li .ad_ico {
    width: 65px;
  }
  
  .advantage .ad_content ul li .ad_text {
    padding-left: 25px;
  }
  
  .advantage .ad_content ul li .ad_text span {
    font-size: 24px;
    letter-spacing: 1px;
    line-height: 1.5;
    margin-bottom: 8px;
  }
  
  .advantage .ad_content ul li .ad_text p {
    font-size: 19px;
    line-height: 1.8;
    letter-spacing: 0.3px;
  }
  
  /* 新闻区域 */
  .news .unite {
    padding: 140px 0;
  }
  
  .news .unite .title {
    margin-bottom: 70px;
  }
  
  .news .unite .title p {
    font-size: 52px;
    width: 50%;
    letter-spacing: 2px;
    line-height: 1.4;
  }
  
  .news .unite .news_list {
    margin-bottom: 40px;
  }
  
  .news .unite .news_list a {
    padding: 25px;
  }
  
  .news .unite .news_list a span {
    font-size: 26px;
    letter-spacing: 0.5px;
    line-height: 1.5;
    margin-bottom: 10px;
  }
  
  .news .unite .news_list a i {
    font-size: 16px;
  }
  
  .news .unite .news_list a p {
    font-size: 19px;
    line-height: 1.8;
    letter-spacing: 0.3px;
    margin-top: 10px;
  }
  
  .news .unite .news_list a .news_ico {
    font-size: 28px;
  }
  
  .news .unite .btn_box a {
    padding: 8px 30px;
    font-size: 17px;
    letter-spacing: 0.5px;
    margin-top: 30px;
  }
  
  /* 关于我们区域 */
  .about {
    width: 100%;
    max-width: 100%;
  }
  
  .about .ab_left .ab_text {
    width: 65%;
  }
  
  .about .ab_left .ab_text span {
    font-size: 52px;
    margin-bottom: 70px;
    padding-bottom: 35px;
    letter-spacing: 2px;
    line-height: 1.3;
  }
  
  .about .ab_left .ab_text span::after {
    width: 130px;
    height: 11px;
  }
  
  .about .ab_left .ab_text .ab_contont {
    margin-bottom: 55px;
  }
  
  .about .ab_left .ab_text .ab_contont p {
    font-size: 21px;
    width: 100%;
    line-height: 1.75;
  }
  
  .about .ab_left .ab_text .ab_bnt a {
    padding: 14px 65px;
    font-size: 19px;
    letter-spacing: 0.5px;
  }
  
  .about .ab_right {
    height: 1100px;
  }
  
  /* 合作伙伴区域 */
  .partner .unite {
    padding: 140px 0;
  }
  
  .partner .unite .title {
    margin-bottom: 70px;
  }
  
  .partner .unite .title p {
    font-size: 52px;
    width: 50%;
    letter-spacing: 2px;
    line-height: 1.4;
  }
  
  .partner .unite .partner_img ul li {
    padding: 0 20px;
  }
  
  /* 页脚区域 */
  .footer .unite {
    padding-top: 100px;
    padding-bottom: 50px;
  }
  
  .footer .unite .list_title {
    margin-bottom: 35px;
  }
  
  .footer .unite .list_title span {
    font-size: 26px;
    letter-spacing: 1.2px;
    padding-bottom: 10px;
  }
  
  .footer .unite .list_title span::after {
    width: 70px;
    height: 6px;
  }
  
  .footer .unite .footer_about p {
    font-size: 22px;
    line-height: 2;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
  }
  
  .footer .unite .footer_list {
    padding-left: 40px;
  }
  
  .footer .unite .footer_list ul li {
    margin-bottom: 15px;
  }
  
  .footer .unite .footer_list ul li a {
    font-size: 22px;
    line-height: 1.9;
    letter-spacing: 0.5px;
  }
  
  .footer .unite .footer_list ul li i {
    font-size: 22px;
    margin-right: 10px;
  }
  
  .footer .unite .footer_contact .cont .cont_btn a {
    padding: 16px 70px;
    font-size: 22px;
    letter-spacing: 0.8px;
  }
  
  .footer .unite .footer_contact .cont .con_ico {
    margin-top: 35px;
  }
  
  .footer .unite .footer_contact .cont .con_ico li {
    margin-left: 25px;
  }
  
  .footer .unite .footer_contact .cont .con_ico li a i {
    font-size: 42px;
  }
  
  .copyright {
    padding: 30px 0;
  }
  
  .copyright p {
    font-size: 22px;
    line-height: 1.9;
    letter-spacing: 0.5px;
  }
  
  .copyright p a {
    font-size: 22px;
    letter-spacing: 0.5px;
  }
}

/* 4K屏幕适配 (3840px及以上) */
@media only screen and (min-width: 3840px) {
  /* 基础文字大小和行高调整 */
  body {
    font-size: 22px;
    line-height: 1.9;
  }
  
  a, li, p, span {
    font-size: 22px;
    line-height: 1.9;
  }
  
  /* 头部导航栏 */
  .head_bar {
    padding: 18px 0;
  }
  
  .head_bar .head .welcome p {
    font-size: 24px;
    letter-spacing: 1px;
    line-height: 1.7;
  }
  
  .head_bar .head .information .hotline span {
    font-size: 24px;
    margin-right: 12px;
  }
  
  .head_bar .head .information .hotline p {
    font-size: 26px;
  }
  
  .head_bar .head .information .ico a i {
    font-size: 28px;
    margin-right: 12px;
  }
  
  .nav_bar .mav_bar_box .nav {
    padding: 18px 0;
  }
  
  .whole .unite {
    width: 2400px;
    max-width: 62.5%;
  }
  
  .nav_bar .mav_bar_box .secondary .sec_width {
    width: 2400px;
    max-width: 62.5%;
  }
  
  .nav_bar .mav_bar_box .nav .menu .menu_ul li {
    padding-left: 80px;
  }
  
  .nav_bar .mav_bar_box .nav .menu .menu_ul li a {
    font-size: 26px;
    letter-spacing: 1.5px;
    line-height: 1.6;
  }
  
  /* 二级菜单 */
  .nav_bar .mav_bar_box .secondary .sec_width ul li {
    padding: 35px;
  }
  
  .nav_bar .mav_bar_box .secondary .sec_width ul li .sec_pro a {
    padding: 18px;
  }
  
  .nav_bar .mav_bar_box .secondary .sec_width ul li .sec_pro a .sec_pro_img {
    width: 140px;
  }
  
  .nav_bar .mav_bar_box .secondary .sec_width ul li .sec_pro a .sec_pro_text span {
    font-size: 22px;
    margin-left: 25px;
    letter-spacing: 0.8px;
  }
  
  /* 产品区域 */
  .products_bar {
    padding: 180px 0;
  }
  
  .products_bar .title {
    margin-bottom: 90px;
  }
  
  .products_bar .title p {
    font-size: 64px;
    width: 45%;
    letter-spacing: 3px;
    line-height: 1.4;
  }
  
  .products_bar .products {
    padding: 60px 40px;
    margin-bottom: 50px;
  }
  
  .products_bar .products .left span {
    font-size: 32px;
    letter-spacing: 1.5px;
    line-height: 1.7;
    margin-bottom: 20px;
  }
  
  .products_bar .products .left a {
    padding: 12px 45px;
    font-size: 21px;
    letter-spacing: 0.8px;
    border-radius: 40px;
  }
  
  .products_bar .products .right {
    height: 280px;
  }
  
  /* 优势区域 */
  .advantage {
    width: 100%;
    max-width: 100%;
  }
  
  .advantage .ad_img .ad_title {
    padding: 65px;
    top: 180px;
  }
  
  .advantage .ad_img .ad_title span {
    font-size: 64px;
    padding-bottom: 35px;
    letter-spacing: 3px;
    line-height: 1.3;
  }
  
  .advantage .ad_img .ad_title span::after {
    width: 160px;
    height: 13px;
  }
  
  .advantage .ad_img .ad_title p {
    font-size: 24px;
    margin-top: 30px;
    line-height: 1.9;
    letter-spacing: 0.8px;
  }
  
  .advantage .ad_content {
    padding: 100px;
  }
  
  .advantage .ad_content ul li {
    margin: 60px 0;
  }
  
  .advantage .ad_content ul li .ad_ico {
    width: 80px;
  }
  
  .advantage .ad_content ul li .ad_text {
    padding-left: 30px;
  }
  
  .advantage .ad_content ul li .ad_text span {
    font-size: 30px;
    letter-spacing: 1.5px;
    line-height: 1.6;
    margin-bottom: 12px;
  }
  
  .advantage .ad_content ul li .ad_text p {
    font-size: 24px;
    line-height: 1.9;
    letter-spacing: 0.5px;
  }
  
  /* 新闻区域 */
  .news .unite {
    padding: 180px 0;
  }
  
  .news .unite .title {
    margin-bottom: 90px;
  }
  
  .news .unite .title p {
    font-size: 64px;
    width: 45%;
    letter-spacing: 3px;
    line-height: 1.4;
  }
  
  .news .unite .news_list {
    margin-bottom: 50px;
  }
  
  .news .unite .news_list a {
    padding: 35px;
  }
  
  .news .unite .news_list a span {
    font-size: 32px;
    letter-spacing: 0.8px;
    line-height: 1.6;
    margin-bottom: 15px;
  }
  
  .news .unite .news_list a i {
    font-size: 20px;
  }
  
  .news .unite .news_list a p {
    font-size: 24px;
    line-height: 1.9;
    letter-spacing: 0.5px;
    margin-top: 15px;
  }
  
  .news .unite .news_list a .news_ico {
    font-size: 36px;
  }
  
  .news .unite .btn_box a {
    padding: 12px 40px;
    font-size: 21px;
    letter-spacing: 0.8px;
    margin-top: 40px;
  }
  
  /* 关于我们区域 */
  .about {
    width: 100%;
    max-width: 100%;
  }
  
  .about .ab_left .ab_text {
    width: 60%;
  }
  
  .about .ab_left .ab_text span {
    font-size: 64px;
    margin-bottom: 90px;
    padding-bottom: 40px;
    letter-spacing: 3px;
    line-height: 1.3;
  }
  
  .about .ab_left .ab_text span::after {
    width: 160px;
    height: 13px;
  }
  
  .about .ab_left .ab_text .ab_contont {
    margin-bottom: 70px;
  }
  
  .about .ab_left .ab_text .ab_contont p {
    font-size: 26px;
    width: 100%;
    line-height: 1.75;
  }
  
  .about .ab_left .ab_text .ab_bnt a {
    padding: 18px 85px;
    font-size: 24px;
    letter-spacing: 0.8px;
  }
  
  .about .ab_right {
    height: 1400px;
  }
  
  /* 合作伙伴区域 */
  .partner .unite {
    padding: 180px 0;
  }
  
  .partner .unite .title {
    margin-bottom: 90px;
  }
  
  .partner .unite .title p {
    font-size: 64px;
    width: 45%;
    letter-spacing: 3px;
    line-height: 1.4;
  }
  
  .partner .unite .partner_img ul li {
    padding: 0 25px;
  }
  
  /* 页脚区域 */
  .footer .unite {
    padding-top: 140px;
    padding-bottom: 70px;
  }
  
  .footer .unite .list_title {
    margin-bottom: 45px;
  }
  
  .footer .unite .list_title span {
    font-size: 32px;
    letter-spacing: 2px;
    padding-bottom: 12px;
  }
  
  .footer .unite .list_title span::after {
    width: 80px;
    height: 7px;
  }
  
  .footer .unite .footer_about p {
    font-size: 28px;
    line-height: 2.1;
    letter-spacing: 0.8px;
    margin-bottom: 15px;
  }
  
  .footer .unite .footer_list {
    padding-left: 45px;
  }
  
  .footer .unite .footer_list ul li {
    margin-bottom: 18px;
  }
  
  .footer .unite .footer_list ul li a {
    font-size: 28px;
    line-height: 2;
    letter-spacing: 0.8px;
  }
  
  .footer .unite .footer_list ul li i {
    font-size: 28px;
    margin-right: 12px;
  }
  
  .footer .unite .footer_contact .cont .cont_btn a {
    padding: 20px 95px;
    font-size: 28px;
    letter-spacing: 1px;
  }
  
  .footer .unite .footer_contact .cont .con_ico {
    margin-top: 45px;
  }
  
  .footer .unite .footer_contact .cont .con_ico li {
    margin-left: 30px;
  }
  
  .footer .unite .footer_contact .cont .con_ico li a i {
    font-size: 56px;
  }
  
  .copyright {
    padding: 35px 0;
  }
  
  .copyright p {
    font-size: 28px;
    line-height: 2;
    letter-spacing: 0.8px;
  }
  
  .copyright p a {
    font-size: 28px;
    letter-spacing: 0.8px;
  }
}

/* 超宽屏适配 (2560px及以上，但小于3840px，且宽高比大于16:9) */
@media only screen and (min-width: 2560px) and (max-width: 3839px) and (min-aspect-ratio: 16/9) {
  .whole .unite {
    width: 2000px;
    max-width: 78%;
  }
  
  .nav_bar .mav_bar_box .secondary .sec_width {
    width: 2000px;
    max-width: 78%;
  }
}