html, body {
    position: relative;
    height: 100%;
    overflow: hidden;
}
* {
    margin: 0; padding: 0; box-sizing: border-box;
    font-family: 'PingFang SC', 'sans-serif', Arial, "Microsoft YaHei", STHeiti, SimHei;
}

html {
    /*font-size: calc(100vw / 19.2);*/
    font-size: 5.2083333vw;
}
@media screen and (max-width: 750px) {
    html {
        /*font-size: calc(100vw / 7.5);*/
        font-size: 13.333333vw;
    }
}
body {
    font-size: 0;
}
ul,li {
    list-style: none;
}
.swiper-1-bg {
    width: 100%;
    height: 100vh;
    object-fit: cover;
}
.swiper-container {
    width: 100%;
    height: 100vh;
    overflow: hidden;
}
.swiper-slide {
    height: 100vh;

}
.swiper-slide-1 {
    background: url(../images/swiper_01_01.jpg) no-repeat center;
    background-size: cover;
    height: 100vh;
    width: 100%;
}
.container {
    position: relative;
}
header.header-black h1,header.header-black .menu a {
    color: #000;
}
header.header-black .logo {
    filter: invert(1) brightness(0);
}
header.header-black {
    border-bottom: 1px solid rgba(255,255,255,.2);
}
header {
    position: fixed;
    display: flex;
    top: 0;
    left: 0;
    width: 100%;
    height: .68rem;
    border-bottom: 1px solid rgba(255,255,255,.5);
    z-index: 3;
    background: rgba(0, 0, 0, .1);
    transition: color .5s;
}
header .logo {
    width: .68rem;
}
header h1 {
    margin-left: .1rem;
    font-size: .18rem;
    color: #fff;
}
.logo-box {
    margin-left: 2rem;
    display: flex;
    align-items: center;
    height: 100%;
    text-decoration: none;
}
.menu {
    margin: 0 2rem 0 auto;
    display: flex;
    align-items: center;
    height: 100%;
    font-size: .16rem;
    color: #fff;
}
.menu li {
    margin-left: .5rem;
}
.menu a {
    position: relative;
    color: #fff;
    text-decoration: none;
    transition: opacity .3s;
}
.menu a.active {
    font-weight: bold;
}
.menu a.active:after {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: -0.1rem;
    content: '';
    width: .06rem;
    height: .06rem;
    background: #0F67FD;
}
.menu a:hover {
    opacity: 0.8;
}
.header-text {
    position: absolute;
    top: 2.5rem;
    left: 2rem;
    color: #fff;
}
.header-text h1 {
    font-size: .86rem;
}
.header-text h2 {
    font-size: .26rem;
    font-weight: normal;
}
.header-text h1 span {
    opacity: 0;
    display: inline-block;
    transform: translateX(70px);
    filter: blur(8px);
    transition: all 1s;
}

/* h2 整体动画 */
.header-text h2 {
    opacity: 0;
    transform: translateY(30px);
    transition: all 1s;
}

/* 激活动画 */
.header-text.h1-animate h1 span {
    opacity: 1;
    filter: blur(0px);
    transform: translateX(0);
}
.header-text.h2-animate h2 {
    opacity: 1;
    transform: translateY(0);
}
.swiper-pagination-2 {
    position: absolute;
    bottom: .5rem;
    left: 1.7rem;
    display: flex;
    align-items: center;
    /*text-align: center;*/
    font-size: .18rem;
    color: #fff;
    /*margin-top: 20px;*/
    z-index: 2;
}
.swiper-container-1 {
    position: relative;
}
.swiper-pagination-1 {
    text-align: right;
    position: absolute;
    top: 50%;
    left: unset;
    right: 30px;
    bottom: unset;
    transform: translateY(-50%);
    width: 2rem;
    font-weight: normal;
    z-index: 10;
}
.custom-bullet {
    display: flex;
    align-items: center;
    justify-content: right;
    padding: 8px 18px;
    margin: 6px 0;
    color: rgba(255,255,255,.5);
    border-radius: 20px;
    cursor: pointer;
    font-size: 16px;
}
.custom-bullet.active {
    color: #fff;
    font-weight: bold;
    opacity: 1;
}
.custom-bullet.active i {
    display: inline-block;
}
.custom-bullet i {
    margin-left: .1rem;
    width: .05rem;
    height: .05rem;
    background: #fff;
    display: none;
}
/* 特殊分页（施工案例、联系方式）非激活时为黑色 */
.custom-bullet.special-black {
    color: #000 !important;
}
.custom-bullet.special-black i {
    background: #000;
}
.swiper-pagination-2 .arrow {
    vertical-align: middle;
    margin: 0 .3rem;
    user-select: none;
}
.swiper-pagination-2 .arrow:hover {
    color: #007aff;
}
.swiper-pagination-2 .current {
    font-size: .3rem;
}
.swiper-pagination-2 .gang {
    margin: 0 .1rem;
}
.swiper-pagination-2 .arrow.disabled {
    opacity: 0.2;
    pointer-events: none;
}
.swiper-pagination-2 .arrow {
    opacity: 1;
    transition: opacity 0.2s;
}
.tip-down {
    position: absolute;
    bottom: .5rem;
    right: .35rem;
    width: .4rem;
    font-size: .14rem;
    color: #fff;
    writing-mode: vertical-rl;
    letter-spacing: .2em;
    z-index: 2;
    cursor: pointer;
}
.tip-down-icon {
    width: 100%;
}
.swiper-slide-2 {
    background: url(../images/page2_bg.jpg) no-repeat center;
    background-size: cover;
}
.page-2-title-box {
    margin: 1.5rem 0 .7rem 2rem;
    color: #fff;
}
.page-2-title-box h2 {
    font-size: .38rem;
    font-weight: normal;
}
.page-2-title-box h3 {
    font-size: .20rem;
    font-weight: normal;
    opacity: .5;
}
.swiper-container-3 {
    position: relative;
    overflow: unset;
    width: 91%;
    overflow-x: hidden;
    margin: 0;
}
.swiper-container-3 .swiper-slide {
    width: 5.6rem !important;
}
.page-2-content {
    opacity: 0;
    transform: translateX(60px);
    transition: opacity 1s, transform 1s;
}
.page-3-content {
    opacity: 0;
    transform: translateX(60px);
    /*transition: opacity 1s, transform 1s;*/
}
.page-2-content.animated,
.page-3-content.animated {
    opacity: 1;
    transform: translateX(0);
}
.page-2-content img {
    width: 100%;
}
.page-2-content-text {
    margin: .3rem 0 0 .3rem;
    color: #fff;
}
.page-2-content p:nth-of-type(1) {
    font-size: .20rem;

}
.page-2-content p:nth-of-type(2) {
    font-size: .14rem;
    opacity: .6;
}
.swiper-pagination-3 {
    position: absolute;
    top: unset !important;
    left: 1.6rem !important;
    bottom: 4rem;
    width: 90% !important;
    background: #999;
}
.swiper3-arrow.disabled {
    /*opacity: 0.2;*/
    pointer-events: none;
    background: transparent;
    border: 1px solid #fff;
}
.swiper3-arrow {
    cursor: pointer;
    margin: 0 10px;
    vertical-align: middle;

}
.swiper3-arrows {
    position: absolute;
    bottom: 3.5rem;
    left: 16.3rem;
    display: flex;
    z-index: 2;
}
.swiper3-arrow-left {
    display: flex;
    justify-content: center;
    align-items: center;
    width: .35rem;
    height: .35rem;
    border-radius: 50%;

    background: #007aff;
    border: 1px solid transparent;
    /*width: 1rem;*/
}
.swiper3-arrow-right {
    display: flex;
    justify-content: center;
    align-items: center;
    width: .35rem;
    height: .35rem;
    border-radius: 50%;
    border: 1px solid transparent;
    background: #007aff;
}
.page-3-bg {
    background: url(../images/bg_01.jpg) no-repeat center;
    background-size: cover;
}
.page-3-title-box {
    margin: 1.5rem auto .7rem;
    width: 15.48rem;
    color: #000;
}
.page-3-title-box h2 {
    font-size: .38rem;
    font-weight: normal;
}
.page-3-title-box h3 {
    font-size: .20rem;
    font-weight: normal;
    opacity: .5;
}
.swiper-container-4 .swiper-slide {
    /*width: 5.8rem !important;*/
}
.swiper-container-4 {
    position: relative;
    width: 15.48rem;
}
.page-3-content {
    box-shadow: 0 4px 16px 0 rgba(0,0,0,0.08);
    transition: all 1s;
    border-radius: .05rem;
    border-bottom: 2px solid transparent;
}
.page-3-content:hover {
    box-shadow: 0 8px 24px 0 rgba(0, 123, 255, 0.18);
    border-bottom: 2px solid #1362ec;
}
.page-3-content img {
    width: 100%;
    border-radius: .05rem;
}
.page-3-content-text {
    padding: .2rem;
}
.page-3-content p:nth-of-type(1) {
    font-size: .18rem;
    color: #111;
}
.page-3-content p:nth-of-type(2) {
    font-size: .14rem;
    /*opacity: .6;*/
    color: #888;
}
.swiper4-arrow {
    position: absolute;
    bottom:4rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    z-index: 2;
}
.swiper4-arrow-left {
    margin-right: .3rem;
    border: 1px solid transparent;
    width: .35rem;
    height: .35rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #007aff;
}
.swiper4-arrow-right {
    border: 1px solid transparent;
    width: .35rem;
    height: .35rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #007aff;
}
.swiper4-arrow .disabled {
    border: 1px solid #fff;
    background: transparent;
    filter: invert(34%) sepia(98%) saturate(7476%) hue-rotate(210deg) brightness(97%) contrast(101%);
}
.page-5-content {
    background: url(../images/bg_02.jpg) no-repeat center;
    background-size: cover;
    height: 100vh;
}
.page-5-title-box {
    padding: 1.5rem 0 .7rem 2rem;
    color: #fff;
}
.page-5-title-box h2 {
    font-size: .38rem;
    font-weight: normal;
}
.page-5-title-box h3 {
    font-size: .20rem;
    font-weight: normal;
    opacity: .5;
}
.hezuo {
    display: flex;
    margin: 0 auto;
    width: 15.48rem;
    flex-wrap: wrap;
    justify-content: space-between;
}
.hezuo img {
    margin-top: .25rem;
    width: 23.7%;
    opacity: 0;
    transform: translateX(60px);
    transition: opacity 0.6s, transform 0.6s;
}
.hezuo img.animated {
    opacity: 1;
    transform: translateX(0);
}
.page-6-content {
    padding-bottom: 2rem;
    background: url(../images/bg_01.jpg) no-repeat center;
    background-size: cover;
}
.page-6-title-box {
    padding: 1rem 0 .7rem 0;
    margin: 0 auto;
    width: 15.48rem;
    color: #111;
}
.page-6-title-box h2 {
    font-size: .38rem;
    font-weight: normal;
}
.page-6-title-box h3 {
    font-size: .20rem;
    font-weight: normal;
    opacity: .6;
}
.page-6-box {
    display: flex;
    margin: 0 auto;
    padding: .6rem 1rem;
    width: 15.48rem;
    background: #fff;

}
.page-6-box-left h2 {
    font-size: .2rem;
    color: #111;
    font-weight: normal;
}
.page-6-box-left-ul {
    display: flex;
    flex-wrap: wrap;
    margin-top: .3rem;
}
.page-6-box-left-ul li {
    margin-top: .2rem;
    width: 3.2rem;
}
.page-6-box-left-ul div {
    font-size: .14rem;
    color: #666
}
.page-6-box-left-ul p {
    margin-top: .06rem;
    font-size: .16rem;
    color: #666
}
.page-6-map {
    width: 6rem;
}
.page-6-box-left {
    opacity: 0;
    transform: translateX(-60px);
    transition: opacity 0.7s, transform 0.7s;
}
.page-6-box-left.animated {
    opacity: 1;
    transform: translateX(0);
}

.page-6-map {
    opacity: 0;
    transform: translateX(60px);
    transition: opacity 0.7s, transform 0.7s;
}
.page-6-map.animated {
    opacity: 1;
    transform: translateX(0);
}

.product-banner {
    position: relative;
    background: url(../images/product_banner.jpg) no-repeat center;
    background-size: cover;
    height: 5.83rem;
}
.banner-text {
    position: absolute;
    top: 1.85rem;
    left: 1.85rem;
    color: #fff;
}
.banner-text h1 {
    font-size: .86rem;
}
.banner-text h2 {
    font-size: .26rem;
    font-weight: normal;
}
.public-title-box {
    display: block;
    padding: 1rem 0 1rem 0;
    text-align: center;
}
.public-title-box h2 {
    font-size: .38rem;
    font-weight: normal;
}
.public-title-box h3 {
    font-size: .20rem;
    font-weight: normal;
    opacity: .5;
}
.public-title-white {
    color: #fff;
}
.public-title-black {
    color: #111;
}
.product-introduction {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}
.product-introduction li {
    margin-left: .3rem;
    margin-bottom: .7rem;
}
.product-introduction img {
    width: 4.94rem;
}
.product-introduction h2 {
    margin: .15rem 0 .1rem 0;
    color: #111;
    font-size: .2rem;
    font-weight: normal;
}
.product-introduction p {
    color: #ADADAD;
    font-size: .14rem;
}
.product-hezuo {
    background: url(../images/product_hezuo_bg.jpg) no-repeat center;
    background-size: cover;
    padding: 1px 0 2rem 0;
}
.product-hezuo-box {
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    width: 82%;
}
.product-hezuo-box img {
    width: 3.57rem;
    /* 先清除 margin，后面再分别加 */
    margin: 0;
}

/* 除了第一排，每个图片都要 margin-top */
.product-hezuo-box img:nth-child(n+5) {
    margin-top: .4rem;
}

/* 每排的第一个不要 margin-left */
.product-hezuo-box img:nth-child(4n+1) {
    margin-left: 0;
}

/* 其他图片（不是每排第一个）有 margin-left */
.product-hezuo-box img:not(:nth-child(4n+1)) {
    margin-left: .4rem;
}

.profle {
    margin: 0 auto;
    padding-bottom: 1rem;
    display: flex;
    justify-content: space-around;
    font-size: .18rem;
    color: #666;
    width: 15.48rem;
}
.profle p + p {
    margin-top: .50rem;
}
.profle ul {
    padding-left: .4rem;
}
.profle ul li {
    list-style: square;
}
.profle > div {
    width: 9.82rem;
}
.profle img {
    width: 4.36rem;
}
.core-banner {
    position: relative;
    background: url(../images/core_banner.jpg) no-repeat center;
    background-size: cover;
    height: 5.83rem;
}
.core {
    padding-bottom: 1.6rem;
}
.core ul {
    display: flex;
    text-align: center;
    justify-content: center;
}
.core li {
    width: 3.87rem;
}
.core h3 {
    margin-top: .2rem;
    margin-bottom: .1rem;
    font-size: .18rem;
    color: #111;
    font-weight: normal;
}
.core p {
    font-size: .14rem;
    color: #888;
}
.core img {
    width: 1.32rem;
}
.factory {
    position: relative;
    display: flex;
    /*width: 15.48rem;*/
    justify-content: center;
    color: #fff;
}
.factory img:nth-of-type(1) {
    width: 2.08rem;
    transform: translateX(-50px);
}
.factory img:nth-of-type(2) {
    width: 10.51rem;
    transform: translateY(-30px);
}
.factory img:nth-of-type(3) {
    width: 2.63rem;
    transform: translateX(50px);
}
.factory img {
    opacity: 0;
    transition: opacity 0.7s, transform 0.7s;
}
.factory img.animated {
    opacity: 1;
    transform: translateX(0);
}
.factory img + img {
    margin-left: .14rem;
}
.factory-text {
    position: absolute;
    top: 4.7rem;
    left: 8.15rem;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s, transform 0.7s;
}

.factory-text.animated {
    opacity: 1;
    transform: translateY(0);
}

.factory h3 {
    font-size: .18rem;
    margin-bottom: .3rem;
}

.factory p {
    font-size: .16rem;
    width: 9.2rem   ;
}