/**/
@media screen and (min-width: 1921px) and (max-width: 4000px) {
}
@media screen and (min-width: 1441px) and (max-width: 1600px) {
  html {
    font-size: 90px;
  }
}
@media screen and (min-width: 1201px) and (max-width: 1440px) {
  html {
    font-size: 80px;
  }
}
@media screen and (min-width: 981px) and (max-width: 1200px) {
  html {
    font-size: 70px;
  }
}
@media screen and (min-width: 769px) and (max-width: 980px) {
  .header .nav {
    display: none;
  }

  .container {
    width: 100%;
    padding: 0 15px;
    max-width: 100%;
  }

  .hidden-xs {
    display: none;
  }
  .visible-xs {
    display: block;
  }
}

/**/
@media (max-width: 768px) {
  .m_nav {
    position: relative;
    width: 0.25rem;
    z-index: 99;
  }
  .m_nav i {
    display: block;
    height: 2px;
    background: #800020;
  }
  .m_nav i + i {
    margin-top: 0.06rem;
  }
  .cross i:nth-of-type(1) {
    -webkit-transform: translateY(8px) rotate(-45deg);
    -ms-transform: translateY(8px) rotate(-45deg);
    transform: translateY(8px) rotate(-45deg);
  }
  .cross i:nth-of-type(2) {
    opacity: 0;
  }
  .cross i:nth-of-type(3) {
    -webkit-transform: translateY(-8px) rotate(45deg);
    -ms-transform: translateY(-8px) rotate(45deg);
    transform: translateY(-8px) rotate(45deg);
  }
  .container {
    width: 100%;
    padding: 0 15px;
    max-width: 100%;
    font-size: 0.14rem;
  }
  .visible-xs {
    display: block;
  }
  .hidden-xs {
    display: none;
  }
  .header {
    padding: 0.15rem 0;
  }
  .header .logo img {
    width: 1.3rem;
  }
  .header .side {
    padding: 0 50px 0 0;
    height: 41px;
  }
  .header .nav {
    display: none;
  }
  .homepage .two .swiper-button-prev {
    left: 0;
  }
  .homepage .two .swiper-button-next {
    right: 0;
  }

  .homepage .two,
  .homepage .fire {
    padding: 0.15rem;
    margin-top: 0.3rem;
  }
  .homepage .one,
  .homepage .three > .flex,
  .homepage .four > .flex {
    padding: 0.15rem;
  }
  .homepage .three::before,
  .homepage .four::before,
  .space::before {
    height: 0.3rem;
  }
  .homepage .one ul {
    margin: -0.05rem;
  }
  .homepage .one ul li {
    width: 100%;
    padding: 0.05rem;
  }
  .homepage .one ul b {
    font-size: 0.18rem;
  }
  .homepage .one ul p {
    left: 0.45rem;
    white-space: nowrap;
  }
  .homepage .two .mySwiper {
    height: 4rem;
  }
  .homepage .two .mySwiper p {
    display: none;
  }
  .homepage .two .mySwiper img {
    width: 60%;
  }
  .homepage .two .swiper-pagination {
    bottom: -0.4rem;
  }
  .homepage .one ul .box {
    font-size: 0.12rem;
  }
  .homepage .three,
  .homepage .three .flex {
    display: block;
  }
  .homepage .three .tabtitle {
    margin: 0.1rem 0 0;
    width: 100%;
    flex-direction: row;
  }
  .homepage .three .tabtitle li {
    flex: 1;
  }
  .homepage .three .tabtitle li + li {
    margin-left: 0.06rem;
  }
  .homepage .three .side {
    width: 100%;
    white-space: nowrap;
    margin-bottom: 0.1rem;
    overflow-x: auto;
  }
  .homepage .three .side ul li {
    display: inline-block;
    vertical-align: middle;
    padding: 0 0.15rem;
    line-height: 0.3rem;
  }
  .homepage .four .flex {
    display: block;
  }
  .homepage .four .img {
    width: 100%;
    margin: 0 0 0.15rem 0;
  }
  .homepage .four p + p {
    margin-top: 0.15rem;
  }
  .homepage .fire dt {
    font-size: 0.16rem;
    margin-top: 0.15rem;
  }
  .videobtrn {
    width: 0.7rem;
  }
  .footer {
    text-align: center;
  }
  .loading .lg {
    width: 3rem;
    margin: -1.5rem 0 0 -1.5rem;
  }
  .dialog video {
    height: 5rem;
  }
}