@media (max-width: 768px) {
  html {
    font-size: calc(100vw / 18);
  }
}

@media (min-width: 768px) {
  html {
    font-size: calc(100vw / 22);
  }
}



/* 手机 */
@media (max-width: 768px) {
  .header {
    display: none;
  }
  .head {
    display: block;
    background-color: #ffffff00;
    width: 100%;
    height: 2rem;
    position: fixed;
    z-index: 999;
  }
  .head .w-750 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 3.5% 5% 0;
    margin: 0 auto;
  }
  .head .w-750 .indexheaderleft {
    display: flex;
    align-items: center;
    width: 100%;
  }
  .head .w-750 .indexheaderleft .logo {
    display: flex;
    align-items: center;
    width: 100%;
  }
  .head .w-750 .indexheaderleft .logo .cimgbox {
    display: flex;
    align-items: center;
  }
  .head .w-750 .indexheaderleft .logo .cimgbox img {
    width: 55%;
    height: 100%;
    object-fit: cover;
    margin-top: 0%;
  }
  .head .w-750 .indexheaderleft .logo .cimgbox .logo_w {
    display: block;
  }
  .head .w-750 .indexheaderleft .logo .cimgbox .logo_bl {
    display: none;
  }
  .head .w-750 .indexheaderleft .rightbox {
    display: none;
  }
  .head .w-750 .indexheaderleft .rightbox .cnav {
    position: absolute;
    z-index: 999;
    top: 1.66666667rem;
    left: 0;
    width: 100%;
    height: 0;
    line-height: 2.66666667rem;
    color: #333;
    background: #fff;
    overflow-y: auto;
    transition: 0.3s;
    text-align: left;
  }
  .head .w-750 .indexheaderleft .rightbox .cnav .daohangnavs {
    border-top: 0.06666667rem solid #f1f1f1;
    padding: 0 6%;
  }
  .head .w-750 .indexheaderleft .rightbox .cnav .daohangnavs .ctitlebox {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .head .w-750 .indexheaderleft .rightbox .cnav .daohangnavs .ctitlebox .cn1 {
    display: block;
    width: 90%;
    color: #333;
    font-size: 0.53333333rem;
  }
  .head .w-750 .indexheaderleft .rightbox .cnav .daohangnavs .ctitlebox .svgffg {
    width: 0.53333333rem;
    height: 0.53333333rem;
    transition: all 0.3s;
  }
  .head .w-750 .indexheaderleft .rightbox .cnav .daohangnavs .ctitlebox.on .svgffg {
    transform: rotate(90deg);
  }
  .head .w-750 .indexheaderleft .rightbox .cnav .daohangnavs .dropdownBox {
    display: none;
  }
  .head .w-750 .indexheaderleft .rightbox .cnav .daohangnavs .dropdownBox .dropli {
    border-top: 0.06666667rem solid #f1f1f1;
    padding: 0 6%;
  }
  .head .w-750 .indexheaderleft .rightbox .cnav .daohangnavs .dropdownBox .dropli a {
    color: #333;
    font-size: 0.53333333rem;
  }
  .head .w-750 .indexheaderleft .rightbox .cnav .daohangnavs .dropdownBox .dropli:last-child {
    padding-bottom: 0;
  }
  .head .w-750 .indexheaderleft .rightbox .cnav .daohangnavs .dropdownBox.on {
    display: block;
  }
  .head .w-750 .indexheaderleft .sousyuyan {
    margin-right: 0.33333333rem;
    display: flex;
    justify-content: right;
    padding: 0.06666667rem 0 0;
  }
  .head .w-750 .indexheaderleft .sousyuyan .lissd .buhuueeh {
    display: block;
    position: relative;
    z-index: 9;
  }
  .head .w-750 .indexheaderleft .sousyuyan .lissd .buhuueeh .icon {
    display: block;
    width: 0.93333333rem;
    height: 0.86666667rem;
    fill: #fff;
    transition: 0.36s;
    cursor: pointer;
  }
  .head .w-750 .indexheaderleft .sousyuyan .lissd .buhuueeh .icon1.hide {
    cursor: pointer;
    position: absolute;
    left: 0;
    top: 70%;
    visibility: hidden;
    display: flex;
    opacity: 0;
    transition: 0.36s;
    width: 0.66666667rem;
    height: 0.86666667rem;
    fill: #000;
  }
  .head .w-750 .indexheaderleft .sousyuyan .lissd .buhuueeh.showSearch .icon {
    opacity: 0;
    transform: translateY(-100%);
  }
  .head .w-750 .indexheaderleft .sousyuyan .lissd .buhuueeh.showSearch .icon1.hide {
    opacity: 1;
    margin-left: 1.33333333rem;
    top: 100%;
    margin-top: -1rem;
    visibility: visible;
  }
  .head .w-750 .indexheaderleft .sousyuyan .lissd .sousuo {
    position: absolute;
    left: 0;
    z-index: 2;
    top: -33.33333333rem;
    width: 100%;
    background: #ffffff;
    padding: 1.33333333rem 6% 3.66666667rem;
    text-align: center;
    transition: 0.36s;
  }
  .head .w-750 .indexheaderleft .sousyuyan .lissd .sousuo form .search-down {
    width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 0.06666667rem solid #eaeaea;
    padding-top: 2.66666667rem;
  }
  .head .w-750 .indexheaderleft .sousyuyan .lissd .sousuo form .search-down .searchst {
    width: 80%;
    height: 2rem;
    font-size: 0.53333333rem;
    border: 0;
    text-indent: 0.66666667rem;
    background-color: #eaeaea00;
  }
  .head .w-750 .indexheaderleft .sousyuyan .lissd .sousuo form .search-down .dintijiaobaiosd {
    border: 0;
    background-color: #eaeaea00;
    cursor: pointer;
  }
  .head .w-750 .indexheaderleft .sousyuyan .lissd .sousuo form .search-down .dintijiaobaiosd .iconweeww {
    display: block;
    width: 0.93333333rem;
    height: 0.86666667rem;
    fill: #000;
  }
  .head .w-750 .indexheaderleft .sousyuyan .lissd .sousuo.active {
    top: 0;
    transition: 0.36s;
  }
  .head .w-750 .indexheaderleft .c-switch {
    position: relative;
    display: block;
    margin: 1% 0 0;
    width: 1rem;
    height: 0.66666667rem;
    cursor: pointer;
  }
  .head .w-750 .indexheaderleft .c-switch i {
    position: absolute;
    left: 0;
    height: 0.13333333rem;
    width: 100%;
    background: #fff;
    transition: all 0.3s;
  }
  .head .w-750 .indexheaderleft .c-switch i:nth-child(1) {
    top: 0;
  }
  .head .w-750 .indexheaderleft .c-switch i:nth-child(2) {
    top: 50%;
    margin-top: -0.02rem;
  }
  .head .w-750 .indexheaderleft .c-switch i:nth-child(3) {
    bottom: -0.07333333rem;
  }
  .c-style2 {
    background-color: #fff !important;
    box-shadow: 0 0 0.66666667rem 0 #33333314;
    position: fixed;
  }
  .c-style2 .w-750 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 3.5% 5% 0;
    margin: 0 auto;
  }
  .c-style2 .w-750 .indexheaderleft {
    display: flex;
    width: 100%;
  }
  .c-style2 .w-750 .indexheaderleft .logo {
    display: flex;
    align-items: center;
    width: 100%;
  }
  .c-style2 .w-750 .indexheaderleft .logo .cimgbox {
    display: flex;
    align-items: center;
  }
  .c-style2 .w-750 .indexheaderleft .logo .cimgbox img {
    width: 40%;
    height: 100%;
    object-fit: cover;
    margin-top: 0%;
  }
  .c-style2 .w-750 .indexheaderleft .logo .cimgbox .logo_w {
    display: none;
  }
  .c-style2 .w-750 .indexheaderleft .logo .cimgbox .logo_bl {
    display: block;
  }
  .c-style2 .w-750 .indexheaderleft .rightbox {
    display: flex;
    align-items: center;
  }
  .c-style2 .w-750 .indexheaderleft .rightbox .cnav {
    height: 100vh;
  }
  .c-style2 .w-750 .indexheaderleft .sousyuyan {
    display: none;
  }
  .c-style2 .w-750 .indexheaderleft .c-switch {
    position: relative;
    display: block;
    margin: 0;
    width: 0.66666667rem;
    height: 0.66666667rem;
    cursor: pointer;
  }
  .c-style2 .w-750 .indexheaderleft .c-switch i {
    position: absolute;
    left: 0;
    height: 0.13333333rem;
    width: 100%;
    background: #e2000f;
    transition: all 0.3s;
  }
  .c-style2 .w-750 .indexheaderleft .c-switch i:nth-child(1) {
    top: 50%;
    margin-top: -0.06666667rem;
    -webkit-transform: rotate(45deg);
    transform: rotate(45deg);
  }
  .c-style2 .w-750 .indexheaderleft .c-switch i:nth-child(2) {
    opacity: 0;
  }
  .c-style2 .w-750 .indexheaderleft .c-switch i:nth-child(3) {
    bottom: 50%;
    margin-bottom: -0.0745rem;
    -webkit-transform: rotate(-45deg);
    transform: rotate(-45deg);
  }
  .head.active {
    background-color: #fff;
  }
  .head.active .w-750 .indexheaderleft .logo .cimgbox .logo_w {
    display: none;
  }
  .head.active .w-750 .indexheaderleft .logo .cimgbox .logo_bl {
    display: block;
  }
  .head.active .w-750 .indexheaderleft .sousyuyan .lissd .buhuueeh .icon {
    fill: #000;
  }
  .head.active .w-750 .indexheaderleft .c-switch i {
    background: #e2000f;
  }
}
/* pc */
@media (min-width: 768px) {
  .head {
    display: none;
  }
  .header {
    background-color: #ffffff00;
    transition: all 0.4s ease-in-out;
    width: 100%;
    height: 0.9rem;
    position: fixed;
    z-index: 99;
    display: flex;
    align-items: center;
  }
  .header .w-1517 {
    width: 17.8rem;
    margin: 0 auto;
  }
  .header .w-1517 .logo-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .header .w-1517 .logo-nav .logo {
    display: block;
    width: 1.29rem;
    height: 0.27rem;
  }
  .header .w-1517 .logo-nav .logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .header .w-1517 .logo-nav .logo .blogo {
    display: block;
  }
  .header .w-1517 .logo-nav .logo .logo_bl {
    display: none;
  }
  .header .w-1517 .logo-nav .nav {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 0.2rem;
  }
  .header .w-1517 .logo-nav .nav .li {
    position: relative;
  }
  .header .w-1517 .logo-nav .nav .li .zhunav {
    position: relative;
    font-size: 0.18rem;
    color: #fff;
    margin-bottom: 0.2rem;
    transition: all 0.5s;
  }
  .header .w-1517 .logo-nav .nav .li .twonavul {
    position: absolute;
    left: 50%;
    top: 50%;
    z-index: 1000;
    padding: 0.1rem;
    margin: 0;
    list-style: none;
    display: none;
    width: auto;
    min-width: 1.2rem;
    background: #fff;
    box-shadow: 0 0.18rem 0.55rem rgba(0, 0, 0, 0.14);
    /* 动画核心 */
    height: 0;
    overflow: hidden;
    pointer-events: none;
    transform: translateX(-50%) translateY(0.1rem);
    transition: height 0.3s ease, transform 0.3s ease, top 0.2s ease;
  }
  .header .w-1517 .logo-nav .nav .li .twonavul .twonavli .twonavlia {
    padding: 0.1rem;
    text-align: center;
    display: block;
    font-size: 0.16rem;
    color: #333;
  }
  .header .w-1517 .logo-nav .nav .li .twonavul .twonavli .twonavlia i {
    display: none;
  }
  .header .w-1517 .logo-nav .nav .li .twonavul::after {
    content: '';
    position: absolute;
    top: 0rem;
    left: 27%;
    background-color: #e2000f;
    width: 0.5rem;
    height: 0.02rem;
  }
  .header .w-1517 .logo-nav .nav .li:first-child .zhunav:hover::after {
    content: '';
    display: none;
  }
  .header .w-1517 .logo-nav .nav .li:last-child .zhunav:hover::after {
    content: '';
    display: none;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(5) .zhunav:hover::after {
    content: '';
    display: none;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul {
    overflow: visible;
    width: 3.5rem;
    padding: 0.25rem;            /* 关键：高度动画期间裁剪内容 */
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli,
.header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavlia,
.header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .sanjimulu{
  opacity: 0;
}
.header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul.is-content-ready .twonavli,
.header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul.is-content-ready .twonavlia,
.header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul.is-content-ready .sanjimulu{
  opacity: 1;
}
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli {
    display: flex;
    position: relative;
    margin-bottom: 0.2rem;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli .twonavlia {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.05rem;
    padding: 0.15rem;
    transition: all 0.5s;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli .twonavlia i {
    display: block;
    width: 0.12rem;
    height: 0.12rem;
    margin-left: 0;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli .twonavlia i .icon {
    display: block;
    width: 0.12rem;
    height: 0.12rem;
    fill: #000;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli .twonavlia:hover {
    color: #e2000f;
    gap: 0.1rem;
    transition: all 0.5s;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli .twonavlia:hover i .icon {
    fill: #e2000f;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli .sanjimulu {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 98%;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    padding: 8% 5%;
    background-color: #eee;
    display: grid;
    grid-auto-flow: column;
    grid-template-rows: repeat(5, auto);
    gap: 0.12rem;
    align-content: start;
    white-space: nowrap;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli .sanjimulu a {
    opacity: 0;
    width: 100%;
    font-size: 0.14rem;
    padding: 2%;
    color: #000;
    display: flex;
    justify-content: space-between;
    transition: all 0.6s;
  }
  
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli .sanjimulu a i .icon {
    display: block;
    width: 0.12rem;
    height: 0.12rem;
    fill: #00000058;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli .sanjimulu a:hover {
    color: #e2000f;
    gap: 0.1rem;
    transition: all 0.5s;
  }
 .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli .sanjimulu a:hover i .icon {
    fill: #e2000f;
  }


  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli .twonavlia{
    background-color: #fff;
    width: 2.5rem;
    border-radius: 0.5rem;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli.active .twonavlia {
    color: #fff;
    background-color: #e2000f;
    gap: 0.1rem;
    transition: all 0.5s;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli.active .twonavlia i .icon {
    fill: #fff;
    transition: all 0.5s;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli.active .sanjimulu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    height: 2.6rem;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul .twonavli.active .sanjimulu a {
    opacity: 1;
    transition: all 0.6s;
  }
  .header .w-1517 .logo-nav .nav .li:nth-child(3) .twonavul::after {
    content: '';
    position: absolute;
    top: 0rem;
    left: 40%;
    background-color: #e2000f;
    width: 0.5rem;
    height: 0.02rem;
  }
  .header .w-1517 .logo-nav .nav .li.is-open .twonavul {
    top: 100%;
    display: block;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
    transition: height 0.3s ease, transform 0.3s ease, top 0.2s ease;
  }
  .header .w-1517 .logo-nav .nav .li:hover .zhunav {
    color: #e2000f;
    transition: all 0.5s;
  }
  .header .w-1517 .logo-nav .nav .li.active .zhunav {
    color: #e2000f;
    font-weight: bold;
  }
  .header .w-1517 .logo-nav .sousyuyan {
    background-color: #e2000f;
    width: 2.5rem;
    height: 0.36rem;
    border-radius: 0.5rem;
  }
  .header .w-1517 .logo-nav .sousyuyan form {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 2% 0 0 5%;
    position: relative;
  }
  .header .w-1517 .logo-nav .sousyuyan form input {
    display: block;
    border: 0;
    color: #fff;
    background: none;
    font-size: 0.16rem;
    padding: 1%;
  }
  .header .w-1517 .logo-nav .sousyuyan form input::placeholder {
    color: #fff;
    font-size: 0.16rem;
  }
  .header .w-1517 .logo-nav .sousyuyan form .dintijiaobaiosd {
    position: absolute;
    z-index: 2;
    top: 0;
    right: 2%;
    background-color: #fff;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    border: 0;
    width: 0.3rem;
    height: 0.3rem;
    margin: 1.2% auto;
  }
  .header .w-1517 .logo-nav .sousyuyan form .dintijiaobaiosd .icon {
    display: block;
    width: 0.25rem;
    height: 0.15rem;
    fill: #e2000f;
  }
  .header.active {
    background-color: #fff;
    transition: all 0.4s ease-in-out;
    height: 0.85rem;
    box-shadow: 0 0 0.1rem 0 #33333329;
  }
  .header.active .w-1517 .logo-nav .logo .blogo {
    display: none;
  }
  .header.active .w-1517 .logo-nav .logo .logo_bl {
    display: block;
  }
  .header.active .w-1517 .logo-nav .nav {
    display: flex;
    align-items: center;
    gap: 0.6rem;
  }
  .header.active .w-1517 .logo-nav .nav .li {
    position: relative;
  }
  .header.active .w-1517 .logo-nav .nav .li .zhunav {
    position: relative;
    font-size: 0.18rem;
    color: #000;
    transition: all 0.5s;
  }
  .header.active .w-1517 .logo-nav .nav .li .zhunav:hover::after {
    content: '';
    position: absolute;
    top: 0.55rem;
    left: 20%;
    background-color: #e2000f;
    width: 0.5rem;
    height: 0.02rem;
  }
  .header.active .w-1517 .logo-nav .nav .li .twonavul {
    margin:0;
  }
  .header.active .w-1517 .logo-nav .nav .li.active .zhunav {
    color: #e2000f;
    font-weight: bold;
  }
}