.part1 {
    height: 470px;
    width: 100%;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 210;
    background-color: #3d2b2b;
}

.part1 .back{
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    object-fit: cover;
    opacity: .15;
    z-index: 215;
}

.part1>*{
    position: relative;
    z-index: 220;
}

.btn-back {
    width: 37px;
    height: 41px;
    display: block;
    background: url("../images/btn_back.png") center/contain no-repeat;
}

.part1 .title {
    font-size: 42px;
    margin-top: 32px;
    margin-bottom: 32px;
    color: #c5a45a;
}

.part1 .subtitle {
    font-size: 19px;
    color: #ffffff;
    margin-bottom: 36px;
}

.part1::after {
    content: "";
    height: 140px;
    position: absolute;
    bottom: -70px;
    width: 2px;
    left: 0;
    right: 0;
    margin: auto;
    z-index: 220;
    background-color: #c5a45a;
}

.part2 {
    padding-top: 172px;
    text-align: center;
    padding-bottom: 200px;
    position: relative;
}

.part2 p {
    font-size: 18px;
    line-height: 32px;
    margin-bottom: 14px;
}

.part2::after {
    content: "";
    display: block;
    width: 56px;
    height: 46px;
    bottom: 110px;
    position: absolute;
    left: 0;
    right: 0;
    margin: auto;
    background: url("../images/about/about_bottom.png") center/contain no-repeat;
}

.part3 {
    color: #000;
}

.part3-1 {
    padding-bottom: 80px;
    text-align: center;
}

.part3-1 h2 {
    font-size: 44px;
    text-align: center;
    font-weight: bold;
    position: relative;
}

.part3-1 h2::after {
    content: "";
    width: 50px;
    height: 4px;
    position: absolute;
    left: 0;
    right: 0;
    margin: auto;
    bottom: -32px;
    background-color: #000;
}

.part3-2{
    padding: 100px 0 90px;
}

.info-list{
    display: flex;
    padding-left: 60px;
    flex-wrap: wrap;
}

.box .info-list{
    margin-bottom: -90px;
    box-sizing: border-box;
}

.info{
    width: calc(100% / 3);
    flex: 0 0 auto;
    text-align: left;
    margin-bottom: 90px;
    padding-right: 30px;
    box-sizing: border-box;
}

.line1{
    font-size: 72px;
    color: #fff;
    margin-bottom: 36px;
    font-weight: bold;
    line-height: 1em;
}

.line2{
    font-weight: bold;
    font-size: 24px;
    margin-bottom: 22px;
    line-height: 1em;
}

.line3{
    width: 50px;
    height: 4px;
    margin-bottom: 20px;
    background-color: #000;
}

.line4{
    font-size: 18px;
    font-weight: normal;
    line-height: 32px;
}