#about-mv {
    position: relative;
    width: 100%;
    height: calc(100vh - 90px);
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)),
    url('../img/about-top.jpg');
    background-size: cover;
}
#about-mv .block {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 50px;
}
#about-mv .block h2 {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10;
    margin-left: 100px;
}
#about-mv .block h2 img {
    width: 53px;
}
#about-mv .block h2 img:nth-child(2) {
    margin-top: 15px;
    width: 58px;
}
#about-mv .block p {
    position: relative;
    z-index: 10;
    -ms-writing-mode: tb-rl;
    writing-mode: vertical-rl;
    font-size: 1.8rem;
    color: #fff;
    line-height: 2.1;
    margin-top: 20px;
}
#about-mv .block .center {
    margin-left: 180px;
}
#about-mv .scroll {
    position: absolute;
    z-index: 10;
    -ms-writing-mode: tb-rl;
    writing-mode: vertical-rl;
    bottom: 100px;
    left: 50px;
}
#about-mv .scroll p {
    position: relative;
    color: #fff;
    font-family: 'Hiragino Kaku Gothic ProN';
    font-size: 1.2rem;
}
#about-mv .scroll p::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 5em;
    transform: translateX(-50%);
    width: 1px;
    height: 90px;
    background-color: #fff;
}
@media screen and (max-width: 768px) {
    #about-mv {
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        height: calc(100vh - 70px);
    }
    #about-mv .block {
        padding-top: 55px;
        padding-right: 30px;
        justify-content: flex-end;
        height: calc(100vh - 70px);
    }
    #about-mv .block h2 {
        position: relative;
        z-index: 10;
        margin-left: 70px;
        margin-right: 0;
    }
    #about-mv .block h2 img {
        width: 23px;
    }
    #about-mv .block h2 img:nth-child(2) {
        width: 25px;
        margin-top: 5px;
    }
    #about-mv .block p {
        font-size: 1.6rem;
        line-height: 2.2;
        letter-spacing: 0.1rem;
    }
    #about-mv .block .center {
        margin-left: 0;
    }
    #about-mv .block_bottom {
        height: calc(100vh - 70px);
        position: relative;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    #about-mv .block_bottom p {
        position: relative;
        z-index: 10;
        -ms-writing-mode: tb-rl;
        writing-mode: vertical-rl;
        font-size: 1.6rem;
        color: #fff;
        line-height: 2.1;
    }
    #about-mv .scroll {
        position: fixed;
        left: 30px;
        transition: .5s;
    }
    #about-mv .scroll.absolute {
        opacity: 0;
    }
}

#about-content {
    margin-bottom: 100px;
}
#about-content .block {
    width: 100%;
}
#about-content .block .item {
    width: 100%;
    display: flex;
    align-items: center;
}
#about-content .block .item img {
    width: 47%;
    aspect-ratio: 12 / 7;
    object-fit: cover;
}
#about-content .block .item p {
    line-height: 1.8;
    margin-left: 80px;
}
#about-content .block .item:nth-child(2n) {
    flex-direction: row-reverse;
    justify-content: space-between;
}
#about-content .block .item:nth-child(2n) p {
    margin-left: 60px;
}
@media screen and (max-width: 768px) {
    #about-content {
        margin-bottom: 60px;
    }
    #about-content .block {
        width: 100%;
    }
    #about-content .block .item {
        width: 100%;
        flex-direction: column;
        align-items: center;
    }
    #about-content .block .item img {
        width: 100%;
        margin-bottom: 20px;
    }
    #about-content .block .item p {
        line-height: 1.8;
        font-size: 1.0rem;
        margin-left: 0;
        margin-bottom: 20px;
    }
    #about-content .block .item:nth-child(2n) {
        flex-direction: column;
    }
    #about-content .block .item:nth-child(2n) p {
        margin-left: 0;
    }
}