.banner {
    position: relative;
    width: 100%;
    height: 881px;
    overflow: hidden;
}

.banner .bg {
    width: 100%;
    overflow: hidden;
    transition: all ease-in-out .6s;
}

.banner .bg img {
    display: block;
    width: 100%;
    height: auto;
}

.banner .polygon {
    position: absolute;
    z-index: 5;
    left: 0;
    top: 45%;
    width: 100%;
    height: 55%;
    overflow: hidden;
    transition: all ease-in-out .6s;
}

.banner .polygon img {
    display: block;
    width: 100%;
}

.banner .polygon .svg-bg {
    background: #f7f7f7;
    width: 100%;
    height: 300px;
}

.banner .title {
    position: absolute;
    left: 0;
    top: 15%;
    width: 100%;
    text-align: center;
    opacity: 1;
    transition: all ease-in-out .6s;
}

.banner .title h1 {
    font-size: 30px;
    color: #333;
    font-weight: normal;
    line-height: 60px;
}

.banner .title img {
    display: block;
    margin: 0 auto;
}

.banner .intro {
    position: absolute;
    top: 35%;
    left: 15%;
    opacity: 1;
    transition: all ease-in-out .6s;
}

.banner .intro h2 {
    position: relative;
    margin: 0 0 20px;
    font-size: 36px;
    font-weight: normal;
    line-height: 80px;
}

.banner .intro h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 80px;
    height: 2px;
    background: #4cbbb4;
}

.banner .intro p {
    font-size: 24px;
    line-height: 48px;
    color: #666;
}

.banner .video-box {
    position: absolute;
    z-index: 10;
    top: 28%;
    right: 10%;
    width: 38%;
    transition: all ease-in-out .6s;
}

.banner .video-box img {
    width: 100%;
}

.banner .video-box .video {
    position: absolute;
    width: 76%;
    top: 6.5%;
    left: 12%;
}

.banner .video-box .video video {
    width: 100%;
}

.banner .text {
    position: absolute;
    z-index: 12;
    left: 0;
    top: 80%;
    opacity: 1;
    width: 100%;
    text-align: center;
    font-size: 18px;
    line-height: 36px;
    color: #666;
    transition: all ease-in-out .6s;
}

.banner-animate .bg {
    transform: translateY(-150px);
}

.banner-animate .polygon {
    top: 50%;
}

.banner-animate .title {
    top: 0;
    opacity: 0;
}

.banner-animate .intro {
    top: 80%;
    opacity: 0;
}

.banner-animate .video-box {
    transform: scale(1.3);
    right: 32%;
    top: 43%;
}

.banner-animate .text {
    top: 100%;
    opacity: 0;
}

.zhd {
    margin-bottom: 50px;
    text-align: center;
}

.zhd h2 {
    font-size: 30px;
    font-weight: normal;
    line-height: 60px;
}

.zhd img {
    display: block;
    margin: 0 auto;
}

.zbtn {
    display: block;
    position: relative;
    width: 420px;
    height: 55px;
    line-height: 55px;
    font-size: 24px;
    color: #fff;
    text-indent: 80px;
    background: #4cbbb4;
    border-radius: 30px;
    transition: all ease-in-out .3s;
}

.zbtn::before {
    position: absolute;
    content: '';
    left: 17px;
    bottom: 0;
    width: 51px;
    height: 74px;
    background: url("/mac/common/img/mac-robot.png") no-repeat;
    animation: zbtn 3s infinite linear;
}

.zbtn:hover {
    color: #fff;
    box-shadow: 0 5px 10px 2px rgba(0, 0, 0, .1);
}

@keyframes zbtn {

    0%,
    80%,
    84%,
    90%,
    96%,
    100% {
        transform: translateY(0)
    }

    88% {
        transform: translateY(-15px)
    }

    92% {
        transform: translateY(-2px)
    }
}

.m1 {
    padding: 60px 0 70px;
}

.m1 .ul {
    width: 1338px;
    margin: 0 auto;
}

.m1 .li {
    float: left;
    width: 446px;
    text-align: center;
}

.m1 .pic {
    height: 85px;
    margin: 0 auto;
}

.m1 .pic img {
    display: block;
}

.m1 .pic:nth-child(1) {
    width: 76px;
}

.m1 .pic:nth-child(2) {
    width: 60px;
}

.m1 .pic:nth-child(3) {
    width: 102px;
}

.m1 .li h3 {
    font-size: 24px;
    font-weight: normal;
    line-height: 60px;
}

.m1 .li p {
    font-size: 18px;
    line-height: 30px;
    color: #999;
}

.m2 {
    position: relative;
    height: 582px;
    padding: 70px 0 0 0;
    background: #f5f5f5 url("../images/m2.jpg") right top no-repeat;
}

.m2 .zhd {
    margin-bottom: 90px;
}

.m2 .intro {
    width: 650px;
    font-size: 18px;
    line-height: 40px;
    color: #999;
}

.m2 .intro p {
    text-indent: 2em;
    margin-bottom: 80px;
}

.m2 .intro .zbtn {
    margin-left: 100px;
    width: 310px;
}

.m3 {
    padding: 70px 0;
}

.m3-figure {
    align-items: center;
}

.m3-figure:nth-child(1) {
    margin-bottom: 70px;
}

.m3-figure:nth-child(2) {
    margin-bottom: 50px;
}

.m3-figure:nth-child(3) {
    margin-bottom: 70px;
}

.m3-c {
    width: 670px;
}

.m3-c .h3 {
    font-size: 30px;
    line-height: 40px;
    margin-bottom: 30px;
    font-weight: 500;
}

.m3-c .p {
    font-size: 18px;
    line-height: 40px;
    color: #999999;
}

.m3-c .a {
    font-size: 18px;
    line-height: 50px;
    color: #4cbbb4;
    border: 1px solid;
    width: 250px;
    margin: 20px 0;
    display: inline-block;
    text-align: center;
    transition: all 500ms;
}

.m3-c .a:hover {
    background-color: #4cbbb4;
    color: #fff;
}

.m3-figure:nth-child(1) .m3-img {
    width: 600px;
    height: 250px;
}

.m3-figure:nth-child(2) .m3-img {
    width: 502px;
    height: 434px;
}

.m3-figure:nth-child(3) .m3-img {
    width: 587px;
    height: 331px;
}

.m3-figure:nth-child(4) .m3-img {
    width: 581px;
    height: 327px;
}


.m4 {
    padding: 100px 0;
    overflow: hidden;
    background: #f5f5f5;
}

.m4 .video {
    float: right;
    width: 618px;
    height: 268px;
    overflow: hidden;
    background: #000;
}

.m4 .video video {
    display: block;
    width: 100%;
    height: 268px;
    background: #000;
}

.m4 .intro {
    width: 655px;
    padding: 20px 0 0 0;
    margin-bottom: 75px;
    font-size: 18px;
    line-height: 40px;
    color: #999;
}

.m4 .doc {
    font-size: 30px;
}

.m4 .doc span {
    color: #4cbbb4;
}

.m5 {
    padding: 70px 0 100px;
}

.m5-slide {
    width: 1260px;
    height: 500px;
    position: relative;
    margin: 0 auto;
}

.m5-slide .bd {
    display: flex;
    justify-content: space-between;
    align-items: center;
    /* transition: all 0.5s; */
}

.m5-slide-ul li {
    width: 340px;
    padding: 20px 15px 35px;
    background-color: #f5f5f5;
    box-sizing: border-box;
    margin: 0 40px;
    /* transition: all 0.5s; */
    text-align: center;
}

.m5-slide-ul[choose="yes"] li {
    width: 400px;
    margin: 0 10px;
}

.m5-slide-ul .m5-img {
    width: 100%;
    margin-bottom: 20px;
}

.m5-slide-ul[choose="yes"] .m5-img {
    margin-bottom: 30px;
}

.m5-slide-ul .m5-name {
    font-size: 18px;
    color: #333;
    line-height: 30px;
}

.m5-slide-ul[choose="yes"] .m5-name {
    font-size: 24px;
    line-height: 40px;
}

.m5-slide-ul .m5-des {
    font-size: 14px;
    color: #999;
    line-height: 28px;
}

.m5-slide-ul[choose="yes"] .m5-des {
    font-size: 18px;
    line-height: 36px;
}

.m5-slide-ul a {
    display: inline-block;
    width: 144px;
    font-size: 14px;
    line-height: 40px;
    color: #4cbbb4;
    border: 1px solid;
    transition: all 0.5s;
    margin: 10px 0;
}

.m5-slide-ul[choose="yes"] a {
    font-size: 18px;
    line-height: 50px;
    width: 180px;
}

.m5-slide-ul a:hover {
    color: #fff;
    background-color: #4cbbb4;
}

.m5-slide .prev,
.m5-slide .next {
    position: absolute;
    top: 50%;
    width: 40px;
    height: 60px;
    text-align: center;
    background-color: #f5f5f5;
    cursor: pointer;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.m5-slide .prev {
    left: -40px;
}

.m5-slide .next {
    right: -40px;
}

.m5-slide .arrow-box {
    width: 12px;
    height: 12px;
    background-color: transparent;
    transform: rotate(45deg);
    position: relative;
    border: 4px solid #a7a7a7;
}

.m5-slide .prev .arrow-box {
    border-top: transparent;
    border-right: transparent;
    left: 4px;
}

.m5-slide .next .arrow-box {
    border-bottom: transparent;
    border-left: transparent;
    right: 4px;
}

.m5-slide .prev:hover .arrow-box {
    border: 4px solid #4cbbb4;
    border-top: transparent;
    border-right: transparent;
}

.m5-slide .next:hover .arrow-box {
    border: 4px solid #4cbbb4;
    border-bottom: transparent;
    border-left: transparent;
}

.m6 {
    height: 565px;
    background: #f5f5f5 url("../images/m6.jpg") right top no-repeat;
}

.m6 .intro {
    width: 400px;
    height: 565px;
    display: table-cell;
    vertical-align: middle;
    text-align: center;
}

.m6 .intro h3 {
    margin-bottom: 10px;
    font-size: 30px;
    font-weight: normal;
    line-height: 50px;
}

.m6 .intro p {
    margin-bottom: 35px;
    font-size: 24px;
    color: #999;
    line-height: 30px;
}

.m6 .intro .zbtn {
    width: 400px;
    text-align: left;
}