*{
    padding: 0;
    margin: 0;
}
section.f13{background: #000;}
.page-content ul,.page-content ul li{
    list-style: none;
}

.f13-header{
    position: relative;
}
.f13-header img{
    width: 100%;
    display: block;
}
.f13-header .header-text{
    position: absolute;
    width: 1200px;
    left: calc(50% - 600px);
    top: 10%;
    transform: translateY(-10%);
    text-align: center;
    color: #fff;
}
.f13-header .header-text h2{
    font-size: 50px;
}
.f13-header .header-text h3{
    font-size: 24px;
    margin-top: 15px;
}
.f13-header .header-text p{
    font-size: 18px;
    margin-top: 20px;
    color: rgba(255,255,255,.5);
}


.feature .container {
    width: 1200px;
    margin: 50px auto;
    display: flex;
    justify-content: space-between;
}

.feature .left-section {
    width: calc(54% - 10px);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.feature .section-a .flex-row {
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

.feature .feature-item {
    position: relative;
}
.feature .feature-item .text{
    position: absolute;
    left: 25px;
    top: 25px;
    color: #fff;
}
.feature .feature-item h2 {
    font-size: 24px;
    margin-bottom: 5px;
}

.feature .feature-item p {
    font-size: 16px;
    color: rgba(255,255,255,.5);
}

.feature .feature-item img {
    width: 100%;
    height: auto;
    border-radius: 15px;
}

.feature .right-section {
    width: calc(46% - 10px);
}

.feature .right-section .feature-item {
    margin-bottom: 0;
}



.all-body{
    margin-top: 120px;
}
.all-body .vscreen{
    width: 1200px;
    margin: 0 auto;
}
.all-body .vscreen .header{
    text-align: center;
}
.all-body .vscreen .header h3{
    font-size: 50px;
    color: #00B7EE;
}
.all-body .vscreen .header p{
    margin-top: 25px;
    color: #8B8B97;
    font-size: 18px;
}

.all-body .vscreen .two-area{
    display: flex;
    justify-content: space-between;
    margin: 25px auto;
}
.all-body .vscreen .two-area.first{margin-top: 60px;}
.all-body .vscreen .two-area .item{
    width: calc(50% - 20px);
}
.all-body .vscreen .two-area .item img{
    width: 100%;
    display: block;
    border-radius: 15px;
}
.all-body .vscreen .two-area .item.align-text{
    display: flex;
    align-items: center;
}
.all-body .vscreen .two-area .item .item-text{
    width: calc(100% - 40px);
    padding: 20px 50px;
}
.all-body .vscreen .two-area .item .item-text h4{
    font-size: 24px;
    color: #fff;
}
.all-body .vscreen .two-area .item .item-text p{
    font-size: 20px;
    color: #8B8B97;
    margin-top: 10px;
}

.open-body{
    margin-top: 120px;
}
.open-body .vscreen{
    width: 1200px;
    margin: 0 auto;
}
.open-body .vscreen img{
    display: block;
    width: 100%;
}
.open-body .vscreen .header{
    text-align: center;
}
.open-body .vscreen .header h3{
    font-size: 50px;
    color: #00B7EE;
}
.open-body .vscreen .header h4.top-h4{
    font-size: 30px;
    color: #f1f1f1;
    margin-top: 15px;
}
.open-body .vscreen .header p{
    margin-top: 25px;
    color: #8B8B97;
    font-size: 20px;
}
.open-body .imgs{
    width: 86%;
    margin: 0 auto;
}
.open-body .imgs img{
    width: 100%;
    display: block;
}
.open-body .items-img{
    margin-top: 50px;
    position: relative;
}
.open-body .items-img img{
    width: 100%;
    display: block;
    border-radius: 15px;
}
.open-body .items-img .items-text{
    width: 70%;
    position: absolute;
    left: 15%;
    bottom: 50px;
}
.open-body .items-img .items-text ul{
    width: 100%;
    display: flex;
    justify-content: space-between;
    list-style: none;
}
.open-body .items-img .items-text ul li{
    width: 30%;
    text-align: center;
    color: #fff;
}

.open-body .items-img .items-text ul li h5{font-size: 22px;font-weight: normal;width: 100%;}
.open-body .items-img .items-text ul li h5 strong{
    color: #00B7EE;font-size: 40px;
}
.open-body .items-img .items-text ul li p{
    font-size: 22px;
    width: 100%;
}




.params{
    margin-top: 80px;
}
.params .vscreen{
    width: 800px;
    margin: 0 auto;
}
.params .header{
    text-align: center;
}
.params .header h3{
    font-size: 50px;
    color: #00B7EE;
    margin-bottom: 50px;
}
.params .vscreen ul{
    padding-bottom: 50px;
    margin-top: 60px;
    color: #fff;
    font-size: 18px;
}
.params .vscreen ul li{
    padding: 15px 0;
    display: flex;
    justify-content: space-between;
}
.params .vscreen ul li:nth-child(odd){
    background: #0C0C0C;
}
.params .vscreen ul li div{
    width: 50%;
    text-indent: 40px;
}
@media (max-width: 1440px){
    .f13-header .header-text h2{font-size: 42px;}
    .f13-header .header-text{width: 1000px;left: calc(50% - 500px);top: 15%;}
    .feature .container,.open-body .vscreen{width: 1000px;}
    .open-body .imgs{width: 80%;}
    .feature .feature-item .text{top: 15px;left: 15px;}
    .feature .feature-item h2,.open-body .items-img .items-text ul li p{font-size: 20px;}
    .header h3{font-size: 40px !important;}
    .all-body .vscreen .two-area .item .item-text p,.open-body .vscreen .header p,.open-body .items-img .items-text ul li h5{font-size: 18px;}
    .open-body .items-img .items-text ul li p{margin-top: 10px;}
}
@media (max-width: 1280px){
    .f13-header .header-text{
        width: 1000px;
        left: calc(50% - 500px);
    }
    .feature .container,.open-body .vscreen{
        width: 1000px;
    }
    .feature .feature-item .text{
        top: 30px;
        left: 25px;
    }
    .feature .feature-item h2{font-size: 24px;}
    .open-body .imgs{
        width: 80%;
    }
}