.app-list h3 {
    font-size: 40px;
    color: #212121;
    font-weight: 700;
    line-height: 1;
    position: relative;
    z-index: 20
}

.main {
    padding-top: 100px;
    padding-bottom: 100px
}

.app-list h3::before {
    display: block;
    content: attr(data-tit);
    white-space: nowrap;
    color: #fff;
    position: absolute;
    left: 0;
    top: -38px;
    font-size: 98px;
    line-height: 1;
    z-index: -1;
    text-shadow: rgba(210, 217, 221, .75) 1px 0 0, rgba(210, 217, 221, .75) 0 1px 0, rgba(210, 217, 221, .75) -1px 0 0, rgba(210, 217, 221, .75) 0 -1px 0
}

.app-list h3::after {
    display: block;
    content: '';
    width: 80px;
    height: 2px;
    background: #67a7b3;
    margin: 10px auto 0 0
}

.app-list>p {
    margin: 40px 0 0;
    line-height: 36px;
    font-size: 17px;
    color: #666
}

.app-list ul {
    margin: 37px -20px 0;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap
}

.app-list ul li {
    width: 33.3333%;
    padding: 15px 20px
}

.app-list ul li>a {
    position: relative;
    overflow: hidden;
    display: block
}

.app-list ul li img {
    display: block;
    width: 100%
}

.app-list ul li .txt {
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    z-index: 105;
    padding: 0 34px 29px;
    transition: opacity .2s, transform .35s;
    display: flex;
    justify-content: flex-end;
    -webkit-flex-direction: column;
    flex-direction: column
}

.app-list ul li .txt::after {
    content: "";
    background: rgba(80, 169, 181, .85);
    height: 0;
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    transition: all .3s ease 0s
}

.app-list ul li .txt>* {
    position: relative;
    z-index: 10
}

.app-list ul li .txt h6 {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    line-height: 1
}

.app-list ul li .txt p {
    font-size: 15px;
    color: #fff;
    line-height: 28px;
    height: 0;
    overflow: hidden;
    transition: all .5s ease 0s;
    margin: 15px 0 0
}

.app-list ul li .txt .more {
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    margin: 25px 0 0
}

.app-list ul li .txt .more i {
    color: #fff;
    font-size: 12px;
    border-radius: 50%;
    width: 26px;
    height: 26px;
    border: 1px solid #fff;
    line-height: 24px;
    display: inline-block;
    text-align: center;
    margin-right: 20px
}

.app-list ul li:hover .txt::after {
    height:100%
}

.app-list ul li:hover .txt p {
    height: 112px
}

.app-list ul li:hover .more i {
    background: #fafbfb;
    color: #4fa8b4;
    border-color: #fafbfb
}

@media screen and (max-width: 1441px) {

    .app-list h3::before{
        font-size: 90px
    }
    .app-list h3 {
        font-size: 38px
    }
    .main {
        padding-top: 80px;
        padding-bottom: 80px
    }
}

@media screen and (max-width: 1367px) {
    .app-list h3::before {
        font-size: 80px
    }

    .app-list h3 {
        font-size: 36px
    }
    .main {
        padding-top: 70px;
        padding-bottom: 70px
    }
}

@media screen and (max-width: 1281px) {
    .app-list h3::before{
        font-size: 70px
    }

    .app-list h3 {
        font-size: 34px
    }
    .main {
        padding-top: 60px;
        padding-bottom: 60px
    }
}

@media screen and (max-width: 1171px) {
    .app-list h3::before {
        font-size: 60px
    }
    .app-list h3 {
        font-size: 32px
    }
    .app-list ul {
        margin: 25px -15px 0
    }

    .app-list ul li {
        width: 50%;
        padding: 15px
    }
}

@media screen and (max-width: 992px) {

    .app-list ul li .txt {
        padding: 0 20px 18px
    }

    .app-list ul li .txt .more {
        display: none
    }
    .main {
        padding-top: 50px;
        padding-bottom: 50px
    }
}

@media screen and (max-width: 768px) {
    .app-list h3::before {
        font-size: 50px
    }
    .main {
        padding-top:35px;
        padding-bottom: 30px
    }
    .app-list h3 {
        font-size: 30px
    }

    .app-list h3 {
        text-align: center
    }

    .app-list h3::before {
        left: 0;
        right: 0;
        top: -25px
    }

    .app-list h3::after {
        margin: 15px auto 0
    }

    .app-list>p {
        margin: 20px 0 0;
        line-height: 24px;
        font-size: 16px
    }

    .app-list ul {
        margin: 20px -10px 0
    }

    .app-list ul li {
        padding: 10px
    }

    .app-list ul li .txt {
        padding: 0 10px 5px
    }

    .app-list ul li .txt h6 {
        font-size: 17px
    }
}

@media screen and (max-width: 576px) {
    .app-list h3::before{
        font-size: 40px
    }
}

@media screen and (max-width: 480px) {

    .app-list ul {
        margin: 14px 0 0
    }

    .app-list ul li {
        padding: 6px 0;
        width: 100%
    }
}