body {
    overflow-x: hidden;
}

html {
    overflow-x: hidden;
}

@media (max-width: 990px) {
    html {
        overflow-x: hidden;
    }
}

h1 {
    font-size: calc(1.3rem + 1.1426571429vw);
    text-align: center;
    margin: 40px 0 6px;
    color: #231275;
}

h2 {
    /* text-align: center;
    color: #fff;
    position: absolute;
    bottom: 36%;
    left: 0;
    right: 0; */
    color: #19196b;
    font-size: 24px;
    margin-bottom: 10px;
    transition: all .3s;
}

h3 {
    color: #19196b;
    font-size: 24px;
    margin-bottom: 10px;
    transition: all .3s;
}

h4 {
    color: #897dc0;
    font-size: 18px;
    text-align: center;
    font-weight: 400;
    margin-bottom: 26px;
    transition: all .3s;
}

h5 {
    color: #4c3eb4;
    font-size: 20px;
    margin-bottom: 14px;
    transition: all .3s;
    /* line-height: 40px; */
    padding-bottom: 10px;
    border-bottom: 1px dashed #b9a3dc;
}

h6 {
    color: #292985;
    font-size: 20px;
    margin-bottom: 10px;
    transition: all .3s;
}

p {
    color: #533668;
    margin-bottom: 0;
}

.introduce,
.advantage,
.picture {
    margin: 120px 0;
}

.introduce-item {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    margin-top: 60px;
}

.introduce-list li {
    display: flex;
    margin-top: 20px;
}

.introduce-item .image-box {
    position: relative;
    min-height: 680px;
}

img,
.img {
    max-width: none;
    transition: all 0.3s;
}

.introduce-item .image-box a {
    display: block;
    height: 240px;
    width: 360px;
    bottom: 10%;
    background-image: url(https://demosc.chinaz.net/Files/DownLoad/moban/202308/moban7397/static/picture/about-1-2.jpg);
}

.introduce-item .image-box a::before {
    content: '';
    height: 100%;
    width: 100%;
    display: block;
    border-radius: 10px;
    position: absolute;
    left: 0;
    top: 0;
    background: #00000094;
}

.model .white::before {
    top: calc(50% - 15px);
    left: calc(50% - 15px);
    height: 30px;
    width: 30px;
    background-size: 30px 30px;
}

.model .white {
    position: absolute;
    top: calc(50% - 30px);
    left: calc(50% - 30px);
    width: 60px;
    height: 60px;
    border: 3px solid #fff;
    background: #504099;
}

.image-1 {
    width: 90%;
    border-radius: 10px;
    box-shadow: rgba(149, 157, 165, 0.2) 0px 8px 24px;
}

.image-2 {
    bottom: 0;
    right: 0;
    border-radius: 10px;
    position: absolute;
    box-shadow: rgb(177 171 189 / 49%) 6px 20px 24px;
}

.image-3 {
    top: 5px;
    right: 0;
    border-radius: 10px;
    position: absolute;
    box-shadow: rgb(114 103 137 / 67%) 2px 10px 26px;
    animation: runbox 3s infinite ease-in-out;
}

@keyframes runbox {
    0% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(10px);
    }

    100% {
        transform: translateY(0);
    }
}

.about-icon {
    display: block;
    background: #6738dc;
    width: clamp(1.2rem, 1.2rem + 1.875vw, 3.2rem);
    height: clamp(1.2rem, 1.2rem + 1.875vw, 3.2rem);
    border-radius: 50%;
    margin-right: 46px;
    transition: all 0.8s ease 0s;
    position: relative;
    flex-shrink: 0;
    top: 10px;
    left: 10px;
}

.about-icon::before {
    content: '';
    height: 100%;
    width: 100%;
    display: block;
    background: url(../img/check.png) no-repeat center center;
    background-size: 48%;

}

.about-icon::after {
    content: '';
    display: block;
    height: clamp(1.2rem, 1.2rem + 1.875vw, 3.2rem);
    width: clamp(1.2rem, 1.2rem + 1.875vw, 3.2rem);
    border: 2px dashed #6738dc;
    border-radius: 50%;
    position: absolute;
    top: 0;
    left: 0;
    transform: scale(1.5);
}

.certificate {
    height: 220px;
    width: 100%;
    display: flex;
    align-items: center;
    background: url('../img/bg1.png');
    background-size: 100%;
    border-radius: 0px;
    overflow: hidden;
    background-repeat: repeat-y;
    background-attachment: fixed;
    background-position: center;
    color: #fff;
    z-index: 0;
    position: relative;
}

.certificate-box {
    max-width: 1200px;
    margin: 0 auto;
}

.certificate .owl-nav {
    display: none;
}

.advantage ul {
    display: flex;
    flex-wrap: wrap;
}

.advantage-item {
    min-height: 300px;
    position: relative;
    margin: 40px 0;
}

.advantage-item-title {
    background: #fff;
    border-radius: 14px;
    padding: 10px 20px;
    position: absolute;
    bottom: -26px;
    width: 80%;
    left: calc(10%);
    z-index: 9;
    cursor: pointer;
}

/* .advantage-item-title::before {
    content: '';
    display: block;
    height: 24px;
    width: 24px;
    background: #fff;
    position: absolute;
    bottom: -12px;
    left: 40px;
    transform: rotate(45deg);
    z-index: -1;
} */

.advantage-item:hover span {
    transform: scale(1);
}

.advantage-item span {
    text-align: center;
    line-height: 30px;
    position: absolute;
    height: 100%;
    width: 100%;
    border-radius: 4px;
    background: #000000a2;
    display: flex;
    align-items: center;
    padding: 0 20px;
    color: #fff;
    transition: all .6s;
    transform: scale(0);
}

@media (max-width: 991px) {
    .introduce-item .image-box {
        max-height: 500px;
    }

    .image-1 {
        width: 70%;
    }

    .image-2 {
        bottom: calc(50% - 150px);
    }
}

@media (max-width: 580px) {
    .advantage-item {
        width: 100%;
    }
}

@media (max-width: 420px) {
    .image-1 {
        margin-top: calc(30%);
    }

    .introduce-item .image-box a {
        width: 85%;
        height: 180px;
        position: relative;
        bottom: calc(2%);
    }

    .image-3 {
        width: 60%;
        top: 50px;
    }

    .model .white::before {
        top: calc(50% - 14px);
        left: calc(50% - 12px);
    }
}

.picture ul {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    flex-wrap: wrap;
}

.picture-item img {
    padding: 10px;
    width: 100%;
}

.advantage-1 {
    background: url(../img/advantage-1.png) no-repeat center;
    background-size: 90%;
}

.advantage-2 {
    background: url(../img/advantage-2.png) no-repeat center;
    background-size: 80%;
}

.advantage-3 {
    background: url(../img/advantage-3.png) no-repeat center;
    background-size: 70%;
}

.advantage-4 {
    background: url(../img/advantage-4.png) no-repeat center;
    background-size: 60%;
}

.advantage-5 {
    background: url(../img/advantage-5.png) no-repeat center;
    background-size: 60%;
}

.advantage-6 {
    background: url(../img/advantage-6.png) no-repeat center;
    background-size: 70%;
}