.list {
    margin: 80px auto 160px;
    display: grid;
    grid-template-columns: 50% 25% 25%;
}

.list .one {
    padding-left: 18px;
    transition: all .5s;
    position: relative;
}
.list .one:nth-child(2) .bottom_box,.list .one:nth-child(3) .bottom_box {
    display: block;
}
.list .one::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 1px;
    height: 100%;
    background-color: #ccc;
}

.list .one:hover::before {
    background-color: #DD2725;
    transition: all .5s;
}

.list img {
    width: auto;
    max-width: 100%;
    margin-right: 10px;
}

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

.list span {
    font-size: 28px;
    font-family: SourceHanSansCN-Regular;
    color: #333333;
}

.list .one .subtitle {
    font-size: 16px;
    font-family: SourceHanSansCN-Regular;
    color: #333333;
    margin-top: 30px;
    font-weight: bold
}

.list ul {
    margin-left: 0px;
    margin-top: 10px;
}

.list li {
    list-style-type: none;
    color: #666;
    transition: all .5s;
}

.list li a {
    font-size: 16px;
    font-family: SourceHanSansCN-Regular;
    color: #666;
    line-height: 32px;
    transition: all .5s;
}

.list .one li:hover,
.list .one li:hover a {
    color: #DD2725;
    transition: all .5s;
}

.list .bottom_box {
    display: grid;
    grid-template-columns: repeat(2, 50%);
}
@media (max-width:1440px) {
    .list span {
        font-size: 24px;
    }
}
@media (max-width:1280px) {
    .list {
        margin: 60px 0 120px;
    }

    .list span {
        font-size: 22px;
    }

    .list {
        grid-template-columns: 56% 22% 22%;
    }
    
    .list li a {
        font-size: 14px;
        line-height: 28px;
    }
}

@media (max-width:1024px) {
    .list .bottom_box {
        grid-template-columns: repeat(1, 100%);
    }

    .list {
        grid-template-columns: 42% 29% 29%;
    }
    .list span {
        font-size: 20px;
    }

    .list {
        margin: 30px 0 60px;
    }

    .list img {
        transform: scale(0.9);
    }
}

@media (max-width:767px) {
    .list span {
        font-size: 18px;
    }
    .list li a {
        font-size: 12px;
    }
    .list .one .subtitle {
        font-size: 14px;
    }
    .list {
        margin: 30px 0 60px;
    }

    .list {
        grid-template-columns: repeat(1, 100%);
    }

    .list .one {
        margin-top: 30px;
    }
    .list .one:nth-child(3) .subtitle,.list .one:nth-child(2) .subtitle {
        display: none;
    }
    .list .one:nth-child(1) {
        margin-top: 0;
    }

    .list .one::after {
        content: none;
    }
    .list .one:last-child::after {
        content: none;
    }
}