body * {
    box-sizing: border-box;
    flex-shrink: 0
}

body {
    /* background: url(/images/bg.png) no-repeat top; */
    background-size: contain;
    font-family: PingFangSC-Regular,Roboto,Helvetica Neue,Helvetica,Tahoma,Arial,PingFang SC-Light,Microsoft YaHei;
    margin: 0;
}

input {
    border: 0;
}

button,input {
    background-color: transparent
}

button {
    border: 1px solid transparent;
    margin: 0;
    outline: none;
    padding: 0
}

button:active {
    opacity: .6
}

.container {
    margin: 0 auto;
    max-width: 1320px;
    padding: 0 20px
}

.flex-col {
    display: flex;
    flex-direction: column
}

.flex-row {
    display: flex;
    flex-direction: row
}

.justify-start {
    display: flex;
    justify-content: flex-start
}

.justify-center {
    display: flex;
    justify-content: center
}

.justify-end {
    display: flex;
    justify-content: flex-end
}

.justify-evenly {
    display: flex;
    justify-content: space-evenly
}

.justify-around {
    display: flex;
    justify-content: space-around
}

.justify-between {
    display: flex;
    justify-content: space-between
}

.align-start {
    align-items: flex-start;
    display: flex
}

.align-center {
    align-items: center;
    display: flex
}

.align-end {
    align-items: flex-end;
    display: flex
}

.highlight-bg {
    background: linear-gradient(180deg,#fff,#f0f6ff 50%,#fff);
    height: 500px;
    left: 0;
    position: absolute;
    top: 650px;
    width: 100%;
    z-index: -1
}
.ws-voice{
    background: url(/images/bg.png) no-repeat top;
}
.header {
    padding-top: 18px;
}

.header .logo {
    height: 71px;
    width: 180px;
    /* background:red; */
    display: flex;
    align-items: center;
}

.header .logo img {
    height: auto;
    width: 100%
}

.header .nav {
    list-style: none;
    margin-top: 23px;
    padding-left: 0
}

.header .nav li {
    margin-left: 35px
}

.header .nav li:first-child {
    margin-left: 0
}

.header .nav li a {
    color: #333;
    font-size: 16px;
    text-decoration: none
}

.header .nav li:hover a {
    color: #27293d
}

.header .nav li.active {
    position: relative
}

.header .nav li.active a {
    color: #27293d
}

.header .nav li.active:after {
    background: #27293d;
    border-radius: 2px;
    bottom: 0;
    content: "";
    height: 3px;
    left: 6px;
    position: absolute;
    width: 20px
}

.feature {
    padding-bottom: 83px;
    padding-top: 190px
}

.feature .feature-left {
    width: 48%
}

.feature .feature-left h2 {
    color: #333;
    font-size: 54px;
    font-weight: 500;
    margin: 43px 0 0
}

.feature .feature-left p {
    color: #999;
    font-size: 22px;
    margin: 20px 0 52px
}

.feature .feature-left .feature-download {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    margin: 0;
    padding: 0
}

.feature .feature-left .feature-download li {
    margin-bottom: 15px;
    margin-right: 10px
}

.feature .feature-left .feature-download li a {
    align-items: center;
    background: linear-gradient(180deg,#3a3c53,#27293d 33%,#27293d);
    border-radius: 25px;
    box-shadow: 0 3px 6px 0 rgba(0,0,0,.05);
    color: #fff;
    display: flex;
    font-size: 15px;
    font-weight: 500;
    height: 46px;
    justify-content: center;
    text-decoration: none;
    width: 140px
}

.feature .feature-left .feature-download li a img {
    height: 20px;
    margin-right: 5px;
    width: 20px
}

.feature .feature-left .feature-download li a .label {
    margin-left: 5px
}

.feature .feature-right {
    width: 52%
}

.feature .feature-right img {
    height: auto;
    width: 100%;
    /* background: red; */

}

.section {
    padding-bottom: 119px;
    padding-top: 0px
}

.section .heading {
    color: #333;
    font-size: 44px;
    font-weight: 500;
    margin: 0;
    text-align: center
}

.section .sub-heading {
    color: #666;
    font-size: 20px;
    font-weight: 400;
    margin: 18px 0 50px;
    text-align: center
}

.feature-one {
    padding-bottom: 100px
}

.feature-two {
    background: linear-gradient(180deg,#fff,#e4efff);
    overflow: hidden;
    padding: 10%;
}

.video-background {
    position: absolute;
    top: -20%;
    left: 0;
    min-width: 100%;
    /* min-height: 100%; */
    /* width: auto;
    height: auto; */
    z-index:-1;
}
.feature-three {
    background: linear-gradient(0deg,#fff,#e4efff);
    overflow: hidden;
    padding-bottom: 29px
}

.feature-three .sub-heading {
    margin: 18px 0 30px
}

.feature-three .placeholder {
    margin-bottom: 80px;
    position: relative;
    text-align: center
}

.feature-three .placeholder img {
    height: auto;
    position: relative;
    width: 100%;
    z-index: 1;
    width: 50%;
}
.feature-three .placeholder .ss {
    height: auto;
    position: relative;
    width: 100%;
    z-index: 1;
    width: 30%;
}
.feature-three .placeholder .star-bg {
    /* background-image: url(/images/pic0.png); */
    background-position: 50%;
    background-repeat: no-repeat;
    background-size: contain;
    height: 249px;
    position: absolute;
    right: -100px;
    top: -160px;
    width: 421px;
    z-index: 1
}

.block {
    margin-bottom: 54px;
    min-height: 400px;
    padding-top: 5px;
    position: relative
}

.block .block-left,.block .block-right {
    width: 50%;
    margin: auto;
}

.block .block-left img,.block .block-right img{
    width: 66%;
    display: block;
    margin: auto;
   
}
.block .heading {
    margin-top: 135px;
    text-align: left
}

.block .sub-heading {
    text-align: left
}

.block img {
    height: auto;
    width: 90%
}

.block .block-overlay {
    position: relative;
    z-index: 2
}

.block .block-bg {
    background-position: 50%;
    background-repeat: no-repeat;
    background-size: contain;
    position: absolute;
    z-index: 1
}

.block .block-bg2 {
    /* background-image: url(/images/fla0.png); */
    height: 220px;
    left: -90px;
    top: 40px;
    width: 200px
}

.block .block-bg3 {
  /* background-image: url(/images/fla0.png); */
    height: 182px;
    right: 289px;
    top: 50px;
    width: 228px
}

.block .block-bg4 {
  /* background-image: url(/images/fla0.png); */
    height: 180px;
    left: -75px;
    top: 80px;
    width: 340px
}

.feature-four {
    overflow: hidden;
    padding-bottom: 119px
}

.feature-four .sub-heading {
    margin: 18px 0 30px
}

.feature-four .carousel-swiper {
    position: relative
}

.feature-four .carousel-swiper .swiper-slide {
    backdrop-filter: blur(10px);
    background: hsla(0,0%,100%,.8);
    border: 1px solid rgba(0,0,0,.15);
    border-radius: 20px;
    box-shadow: 0 10px 30px 0 rgba(0,0,0,.15);
    height: 408px;
    width: 520px
}

.feature-four .carousel-swiper .swiper-slide .image-container {
    height: 200px;
    margin: 10% 0 0 30%;
    width: 200px
}

.feature-four .carousel-swiper .swiper-slide .image-container img {
    height: 200px;
    width: 200px
}

.feature-four .carousel-swiper .swiper-slide h2 {
    color: #333;
    font-size: 22px;
    font-weight: 500;
    margin: 26px 50px 10px;
    text-align: center
}

.feature-four .carousel-swiper .swiper-slide p {
    color: #333;
    font-size: 14px;
    line-height: 1.6;
    margin: 0 50px;
    text-align: center
}

.feature-four .carousel-swiper .swiper-button-next,.feature-four .carousel-swiper .swiper-button-prev {
    background-position: 50%;
    background-repeat: no-repeat;
    height: 82px;
    width: 82px;
}

.feature-four .carousel-swiper .swiper-button-next:after,.feature-four .carousel-swiper .swiper-button-prev:after {
    display: none
}

.feature-four .carousel-swiper .swiper-button-prev {
    background: url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI4MiIgaGVpZ2h0PSI4MiI+PGcgZmlsbD0ibm9uZSIgZmlsbC1ydWxlPSJub256ZXJvIiB0cmFuc2Zvcm09InJvdGF0ZSg5MCA0MCA0MSkiPjxjaXJjbGUgY3g9IjQwIiBjeT0iNDAiIHI9IjQwIiBmaWxsPSIjMDAwIiBmaWxsLW9wYWNpdHk9Ii4yIiBzdHJva2U9IiNEREQiLz48cGF0aCBmaWxsPSIjRkZGIiBkPSJNNDAgNTEgMjYuNTM0IDM4LjAwNmExLjcxOCAxLjcxOCAwIDAgMSAwLTIuNDkgMS44NzMgMS44NzMgMCAwIDEgMi41ODIgMEw0MCA0Ni4wMThsMTAuODg0LTEwLjUwMmExLjg3MyAxLjg3MyAwIDAgMSAyLjU4MiAwIDEuNzE4IDEuNzE4IDAgMCAxIDAgMi40OUw0MCA1MVoiLz48L2c+PC9zdmc+) no-repeat 50%;
    background-size: contain;
    top: 42%
}

.feature-four .carousel-swiper .swiper-button-next {
    background: url(data:image/svg+xml;base64,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) no-repeat 50%;
    background-size: contain;
    top: 42%
}

.feature-four .carousel-swiper .swiper-pagination {
    bottom: -70px
}

.feature-four .carousel-swiper .swiper-pagination .swiper-pagination-bullet {
    background: #aca8a8;
    border-radius: 6px;
    height: 12px;
    width: 12px
}

.feature-four .carousel-swiper .swiper-pagination .swiper-pagination-bullet.swiper-pagination-bullet-active {
    background: #27293d;
    border-radius: 10px;
    height: 19px;
    position: relative;
    top: 3px;
    width: 19px;
}

.feature-five {
    background: #f5f9ff;
    overflow: hidden;
    padding-bottom: 119px;
    padding-top: 119px;
}

.feature-five .slider-swiper {
    position: relative
}

.feature-five .slider-swiper .swiper-slide {
    border-radius: 20px;
    overflow: hidden;
    width: 649px;
}

.feature-five .slider-swiper .swiper-slide img {
    height: auto;
    width: 100%
}

.feature-five .slider-swiper .swiper-pagination {
    bottom: -70px
}

.feature-five .slider-swiper .swiper-pagination .swiper-pagination-bullet {
    background: #aca8a8;
    border-radius: 6px;
    height: 12px;
    width: 12px
}

.feature-five .slider-swiper .swiper-pagination .swiper-pagination-bullet.swiper-pagination-bullet-active {
    background: #27293d;
    border-radius: 10px;
    height: 19px;
    position: relative;
    top: 3px;
    width: 19px
}

.download {
    /* background: url(/images/pic0.png) 100% no-repeat; */
    background-size: 100% 100%;
    min-height: 480px;
    padding: 80px 10px;
    text-align: center
}

.download .title {
    color: #333;
    font-size: 44px;
    margin: 0
}

.download .description {
    color: #adb4c7;
    font-size: 16px;
    margin: 18px 0 50px
}

.download .items {
    flex-wrap: wrap;
    margin: 0 auto;
    max-width: 1000px
}

.download .items>a {
    text-decoration: none
}

.download .items .download-text {
    color: #555;
    font-size: 16px;
    font-weight: 500
}

.download .items .download-text>p {
    margin: 15px 0 10px
}

.download .items .download-now {
    color: #27293d;
    cursor: pointer;
    font-size: 14px;
    margin: 0;
    opacity: 0;
    transition: opacity .3s
}

.download .items .circle {
    background: linear-gradient(180deg,#3a3c53,#27293d 33%,#27293d);
    border-radius: 60px;
    box-shadow: 0 3px 6px 0 rgba(0,0,0,.05);
    height: 80px;
    width: 80px;
}

.download .items .circle .icon {
    height: 20px
}

.download .items .circle .hover {
    display: none;
    height: 30px;
    overflow: hidden;
    width: 22px
}

.download .items>a:hover .download-now {
    opacity: 1
}

.download .items>a:hover .circle {
    background: rgba(35, 37, 53,.9);

}

.download .items>a:hover .circle .icon {
    /* display: none */
    transform: scale(1.2);
}

.download .items>a:hover .circle .hover {
    display: block
}

.footer {
    background: #ebeff5;
    justify-content: flex-center;
    min-height: 208px;
    padding-top: 40px;
    text-align: center
}

.footer .title {
    color: #82889b;
    font-size: 14px;
    font-weight: 400
}

.footer .links {
    margin: 20px 0 30px
}

.footer .links a {
    color: #333;
    font-size: 12px;
    margin: 0 15px;
    text-decoration: none
}

.footer .copyright {
    align-items: center;
    border-top: 1px solid #dce0eb;
    color: #82889b;
    display: flex;
    font-size: 12px;
    justify-content: center;
    line-height: 20px;
    padding: 40px 0
}

.footer .copyright .copyright-url {
    color: #82889b;
    text-decoration: none
}

@media (max-width: 1080px) {
    .container {
        margin-left:20px;
        margin-right: 20px
    }

    .feature {
        align-items: center;
        flex-direction: column-reverse;
        padding-top: 120px
    }

    .feature .feature-left {
        text-align: center;
        width: 100%
    }

    .feature .feature-left .feature-download {
        justify-content: center
    }

    .feature .feature-right {
        margin-bottom: 70px;
        width: 70%
    }
}

@media (max-width: 950px) {
    .block {
        flex-direction:column
    }

    .block .block-left,.block .block-right {
        text-align: center;
        width: 100%
    }

    .block .block-right {
        margin-bottom: 30px
    }

    .block .heading {
        margin-top: 0
    }

    .block .heading,.block .sub-heading {
        text-align: center
    }

    .block .block-bg2 {
        left: 34%;
        top: -6%;
        width: 160px
    }

    .block .block-bg3 {
        right: 34%;
        top: -5%
    }

    .block .block-bg4 {
        left: 36%;
        top: -3%
    }

    .block-reverse {
        flex-direction: column-reverse
    }

    .feature-one .placeholder {
        height: 360px
    }

    .feature-two {
        padding-bottom: 10px;
        padding-top: 20px
    }

    .feature-three {
        background-position: -80px 499px;
        background-size: 25%
    }

    .feature-three .placeholder .star-bg {
        width: 245px;
    }

    .feature-four .carousel-swiper .swiper-slide {
        width: 430px
    }

    .feature-four .carousel-swiper .swiper-slide .image-container {
        margin-left: 28%
    }

    .feature-four .carousel-swiper .swiper-button-next,.feature-four .carousel-swiper .swiper-button-prev {
        border-radius: 26px;
        height: 52px;
        width: 52px
    }

    .feature-five .slider-swiper .swiper-slide {
        width: 430px
    }
}

@media screen and (max-width: 480px) {
    .header .logo {
        height:60px;
        width: 60px;
        content: url(https://voice-1319391239.cos.ap-nanjing.myqcloud.com/logo.png);
        border-radius: 30px;
        margin-right:10px;
    }

    .header .nav {
        margin-top: 13px
    }

    .header .nav li {
        margin-left: 20px
    }

    .feature {
        padding-bottom: 0;
        padding-top: 60px
    }

    .feature .feature-left h2 {
        font-size: 35px
    }

    .feature .feature-right {
        margin-bottom: 20px;
        width: 100%
    }

    .section .heading {
        font-size: 30px
    }

    .section .sub-heading {
        font-size: 17px
    }

    .feature-one .placeholder {
        height: 240px
    }

    .block img {
        width: 100%
    }

    .block .block-bg2 {
        left: 21%;
        top: -11%;
        width: 160px
    }

    .block .block-bg3 {
        right: 22%;
        top: -10%;
        width: 200px
    }

    .block .block-bg4 {
        left: 21%;
        top: -7%;
        width: 280px
    }

    .feature-three {
        background-position: -55px 416px;
        background-size: 29%
    }

    .feature-three .placeholder .star-bg {
        right: -130px;
        width: 185px
    }

    .feature-four .carousel-swiper .swiper-slide {
        width: 300px
    }

    .feature-four .carousel-swiper .swiper-slide .image-container {
        margin-left: 17%
    }

    .feature-five .slider-swiper .swiper-slide {
        width: 300px
    }

    .download .title {
        font-size: 35px
    }

    .download .items .circle {
        border-radius: 40px;
        height: 80px;
        width: 80px
    }
}

.course {
    margin: 0 auto;
    padding-top: 40px;
    width: 1208px
}

.course .title {
    font-size: 22px;
    font-weight: 700
}

.course .subtitle {
    font-size: 18px;
    font-weight: 700;
    padding: 20px 0
}