body {
    background-color: #fcfcfc;
}

/* 滚动条隐藏 */

::-webkit-scrollbar {
    /*隐藏滚轮*/
    /* display: none; */
}

/*  */

.about {
    font-size: 100px;
    /* margin-top:88px; */
}

.about_wall {
    width: 100%;
    height:556px;
    background-image: url('../images/about.jpg');
    background-repeat: no-repeat;
    background-position-x: center;
    background-size: cover;
    position: relative;
}

.about_wall_text {
    font-size: 18px;
    width: 1200px;
    height: 200px;
    position: absolute;
    color: white;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    justify-content: space-around;
    text-align: center;
}

.about_wall_text_span {
    font-size: 70px;
    letter-spacing: 4px;
}

.about_wall_text_spans {
    font-size: 36px;
}

.about_wall_text_space {
    width: 0.8em;
    height: 4px;
    margin: 6px auto 20px auto;
    background-color: #296AFF;
}

.about_main {
    width: 100%;
}

.about_main_main {
    width: 1200px;
    height: 100%;
    margin: 5% auto;
    position: relative;
}

.about_main_one_l_title {
    line-height: 1.6;
}

.about_main_one {
    display: flex;
    min-height: 2.78em;
    justify-content: space-between;
    align-items: center;
    /* margin: 10% 0; */
}

.about_main_one_l {
    margin-right: 0.5em;
    height: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.about_main_one_l_title {
    font-size: 32px;
    margin-bottom: 1.4em;
    color: #296AFF;
}

.about_main_one_l_text {
    /* overflow-y: scroll; */
    font-size: 14px;
    color: #606060;
    line-height: 2;
}

.about_main_one_r {
    height: 278px;
    margin-left: 0.5em;
    flex: 1;
    display: flex;
}

.about_main_one_r img {
    width: 100%;
    /* height: 100%; */
    object-fit: contain;
}

.about_main_two {
    /* height: 8.38em;
    background-image: url('../images/about3.png');
    background-repeat: no-repeat;
    background-size: 100% auto;
    background-position-x: center; */
}

.about3img{
    width: 100%;
    object-fit: contain;
    padding-bottom: 2em;
}

.about_main_two_l {
    width: 45%;
    height: 1.6em;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: absolute;
    bottom: 0;
    left: 0;
}

.about_main_two_r {
    width: 30%;
    height: 5.2em;
    background-color: white;
    position: absolute;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    padding: 0.5em 0.95em;
    box-shadow: 0 1px 5px 1px #cccccc;
}

.about_main_two_r_li {
    line-height: 1.6;
    position: relative;
}

.about_main_two_r_li:hover .about_main_two_title::before {
    transform: rotate(180deg) scale(1.2);
}

.about_main_two_title::before {
    content: "";
    width: 20px;
    height: 20px;
    display: block;
    position: absolute;
    left: -40px;
    top: 10px;
    background-image: url('../images/about4.png');
    background-repeat: no-repeat;
    background-size: 100% 100%;
    transition: 0.35s;
}

.about_main_two_r::before {
    content: "";
    width: 4px;
    height: 50%;
    background-color: #296AFF;
    position: absolute;
    left: -4px;
    bottom: 0;
}

.about_main_two_title {
    font-size: 24px;
    color: #2b2b2b;
}

.about_main_two_text {
    font-size: 16px;
    letter-spacing: 1px;
}

.about_main_three, .about_main_four {
    width: 1200px;
    margin: 1em auto;
    display: flex;
    justify-content: space-between;
    text-align: center;
}

.about_main_three_li {
    position: relative;
    top: 0;
    transition: 0.6s;
}

.about_main_three_li:hover {
    top: -10px;
}

.about_main_three_li img {
    transition: 1s;
    margin: auto;
    transform: rotate(0deg) scale(0.8);
    height:65px;
}

.about_main_three_li:hover img {
    transform: rotate(360deg) scale(1);
}

.about_main_three_li_title {
    color: #2b2b2b;
    font-size: 0.18em;
    line-height: 1.6;
    margin-bottom: 0.3em;
}

.about_main_three_li_cont {
    font-size: 0.1em;
    color: #999999;
    letter-spacing: 3px;
}

.about_main_three_li img {
    width: 0.8em;
    object-fit: contain;
}

.about_main_four_l {
    width: 45%;
    position: relative;
}

.about_main_four_l::before {
    content: '';
    width: 4px;
    height: 50%;
    background-color: #296AFF;
    position: absolute;
    right: -4px;
    bottom: 0;
    transition: 0.35s;
}

.about_main_four_img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: 0.35s;
    display: block;
}

.about_main_four_img {
    overflow: hidden;
}

.about_main_four_img:hover img {
    transform: scale(1.1);
}

.about_main_four_l .about_main_four_logo {
    position: absolute;
    top: 40px;
    left: 46px;
    color: white;
    line-height: 1.8;
    text-align: left;
}

.about_main_four_logo p:first-of-type {
    font-size: 24px;
    letter-spacing: 10px;
}

.about_main_four_logo p:last-of-type {
    font-size: 28px;
    letter-spacing: 3px;
}

.about_main_four_r {
    width: 45%;
    text-align: left;
    height: 4.86em;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    line-height: 1.6;
}

.about_main_four_li_title {
    font-size: 0.24em;
    color: #2b2b2b;
    line-height: 2;
}

.about_main_four_li_cont {
    font-size: 0.14em;
    letter-spacing: 2px;
}

@media screen and (max-width: 1200px) {
    .about_wall_text {
        width: 90%;
    }
    .about_main_main {
        width: 90%;
    }
    .about_main_one_l {
        margin-right: 0.2em;
    }
    .about_main_one_r {
        margin-left: 0.2em;
    }
    .about_main_one_l_text {
        font-size: 12px;
    }
    .about_main_three {
        width: 90%;
        flex-wrap: wrap;
        margin: 50px auto 0;
    }
    .about_main_three_li {
        width: 50%;
        margin: 20px 0;
    }
    .about_main_four {
        width: 90%;
    }
}

@media screen and (max-width: 800px) {
    .about_wall {
        height: 4em;
    }
    .about_wall_text {
        flex-direction: column;
        top: 50%;
        transform: translate(-50%, -50%);
        height: 20em;
    }
    .about_wall_text_span {
        font-size: 30px;
        font-weight: bold;
    }
    .about_main_one_l {
        margin-right: 0;
    }
    .about_main_one_r {
        margin-left: 0;
    }
    .about_main_one {
        display: block;
        height: auto;
    }
    .about_main_one_l_title {
        text-align: center;
    }
    .about_main_one_r {
        height: auto;
    }
    .about_main_one_r img {
        height: auto;
    }
    .about_main_one_r {
        margin: 5% 0;
    }
    .about_main_two {
        background-position-x: -2.3em;
    }
    .about_main_two_l {
        width: 100%;
    }
    .about_main_two_r {
        width: 100%;
        height: 2.6em;
        top: 36%;
        padding: 0 0.55em;
    }
    .about_main_two_r::before {
        height: 100%;
    }
    .about_main_two_title {
        font-size: 16px;
    }
    .about_main_two_text {
        font-size: 12px;
    }
    .about_main_four {
        flex-direction: column;
    }
    .about_main_four_l {
        width: 100%;
    }
    .about_main_four_l::before {
        display: none;
    }
    .about_main_four_r {
        width: 100%;
    }
    .about_wall_text_spans {
        font-size: 20px;
    }
    .about_wall_text_space {
        margin: 1% auto 3%;
    }
}