.flex {
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flex;
    display: -o-flex;
    display: flex;
}

.ob img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@media only screen and (min-width: 768px) {
    body {
        letter-spacing: 3px;
    }
}

/* lead */
#lead {
    position: relative;
    padding: 15vw 0 15vw;
}

#lead::before {
    content: "";
    position: absolute;
    background: #1b1812;
    top: 29vw;
    right: 0;
    width: 92%;
    height: 137vw;
    z-index: -1;
}

#lead::after {
    content: "";
    position: absolute;
    background: #1b1812;
    bottom: 0;
    left: 0;
    width: 42%;
    height: 27vw;
    z-index: -1;
}

#lead .photo {
    margin-left: -8%;
    margin-bottom: 10vw;
}

#lead h2 {
    font-size: 6vw;
    width: 23vw;
    height: 69vw;
    margin: 0 auto 8vw;
    line-height: 2;
    letter-spacing: 0.2em;
}

#lead .txt {
    margin-bottom: 5vw;
}

#lead .col {
    margin-bottom: 5vw;
}

#lead .col .txt2 {
    margin-bottom: 8vw;
}

#lead .col .photo2 {
    margin-bottom: -7vw;
    position: relative;
    z-index: 5;
}

#lead .bg {
    margin: 0 -8% 6vw;
    height: 61vw;
}

@media only screen and (min-width: 768px) {
    #lead {
        padding: 135px 0 161px;
    }

    #lead .wrap {
        max-width: 1150px;
        padding: 0 20px;
    }

    #lead::before {
        width: calc(50% + -120px);
        top: 203px;
        height: 967px;
    }

    #lead::after {
        width: calc(50% + -170px);
        height: 430px;
    }

    #lead .photo {
        margin-bottom: 160px;
        margin-left: calc(50% - 50vw);
        margin-right: 288px;
        height: 760px;
    }

    #lead h2 {
        font-size: 30px;
        width: 90px;
        height: 360px;
        margin: 0;
        position: absolute;
        right: 56px;
        top: 230px;
        line-height: 70px;
        letter-spacing: 9px;
    }

    #lead .txt {
        margin-bottom: 53px;
        width: 490px;
        letter-spacing: 4px;
    }

    #lead .col {
        margin-bottom: -190px;
        display: flex;
        flex-direction: column-reverse;
        margin-left: auto;
        width: 519px;
        position: relative;
        z-index: 5;
    }

    #lead .col .txt2 {
        margin-bottom: 20px;
        width: 465px;
        margin-left: 50px;
        letter-spacing: 3px;
    }

    #lead .col .photo2 {
        margin-bottom: -20px;
        position: absolute;
        top: -436px;
        right: -10px;
    }

    #lead .bg {
        margin: 0 -90px;
        height: 566px;
    }
}


/* course */
#course {
    position: relative;
    padding: 10vw 0 15vw;
}

#course .note {
    text-align: right;
    margin-bottom: 5vw;
}

#course .group {
    flex-direction: column-reverse;
}

#course .group .col {
    margin: 0 8% 6vw;
}

#course .group .col h2 {
    font-size: 6vw;
    text-align: center;
    margin-bottom: 6vw;
    line-height: 1.6;
}

#course .group .col .price {
    text-align: center;
    margin-bottom: 6vw;
}

#course .group .col .price dt {
    font-size: 22px;
}

#course .group .col .price dt small {
    font-size: 16px;
}

#course .group .col .price dd {
    font-size: 20px;
}

#course .group .photo {
    margin-bottom: 6vw;
}

#course .btn-shared {
    margin: 0 8% 5vw;
}

#course .btn-shared a {
    background: #edece9;
    color: #000;
}

#course .btn-shared a span:after {
    background: #000;
}

#course .btn-shared a span:before {
    background: #000;
}

@media only screen and (min-width: 768px) {
    #course {
        padding: 59px 0 150px;
    }

    #course .note {
        margin-bottom: 29px;
        margin-right: 12px;
        letter-spacing: 4px;
    }

    #course .group {
        flex-direction: row;
        justify-content: space-between;
    }

    #course .group .col {
        margin: 0;
        width: 496px;
        margin-top: 70px;
    }

    #course .group .col h2 {
        font-size: 30px;
        margin-bottom: 60px;
        line-height: 70px;
    }

    #course .group .col .price {
        margin-bottom: 70px;
    }

    #course .group .col .price dt {
        font-size: 25px;
    }

    #course .group .col .txt {
        max-width: 400px;
        margin: 0 auto;
        width: 100%;
        letter-spacing: 2px;
    }

    #course .group .photo {
        margin-bottom: 97px;
        width: calc(100% - 502px);
        height: 830px;
    }

    #course .btn-shared {
        margin: 0 auto;
    }

    #course .btn-shared a {
        background: none;
        color: #fff;
    }

    #course .btn-shared a:hover {
        color: #000;
    }

    #course .btn-shared a:hover span:after {
        background: #000;
    }

    #course .btn-shared a:hover span:before {
        background: #000;
    }

    #course .btn-shared a span:after {
        background: #fff;
    }

    #course .btn-shared a span:before {
        background: #fff;
    }
}


/* floor */
#floor {
    position: relative;
}

#floor .bg {
    height: 70vw;
    position: relative;
    margin-bottom: 6vw;
}

#floor .bg h2 {
    font-size: 6vw;
    width: 19vw;
    height: 60vw;
    position: absolute;
    right: 4%;
    top: 12%;
    z-index: 5;
    text-shadow: 0px 0px 20px #000, 0px 0px 20px #000, 0px 0px 20px #000;
}

#floor .bg h2 span {
    font-size: 3vw;
}

#floor .txt {
    margin-bottom: 8vw;
}

#floor .photo {
    margin-bottom: 6vw;
}

#floor .map {
    margin: 0 auto 0vw;
    width: 80%;
    z-index: 5;
    position: relative;
}

#floor .group .photo2 {
    margin-bottom: 6vw;
}

#floor .group .col h3 {
    font-size: 6vw;
    margin-bottom: 6vw;
}

#floor::after {
    content: "";
    position: absolute;
    background: #1b1812;
    top: -9vw;
    right: 0;
    width: 42%;
    height: 207vw;
    z-index: -1;
}

@media only screen and (min-width: 768px) {
    #floor {
        padding-top: 147px;
    }

    #floor .wrap {
        max-width: 1250px;
        padding: 0 20px;
    }

    #floor .bg {
        height: 860px;
        margin-bottom: 137px;
    }

    #floor .bg h2 {
        font-size: 30px;
        width: 50px;
        height: 320px;
        right: 49px;
        top: 70px;
        line-height: 50px;
        letter-spacing: 8px;
    }

    #floor .bg h2 span {
        font-size: 16px;
        letter-spacing: 4px;
    }

    #floor .txt {
        margin-bottom: 140px;
        width: 533px;
        margin-left: auto;
        letter-spacing: 3px;
        margin-right: 108px;
    }

    #floor .photo {
        margin-bottom: 479px;
        width: 530px;
        margin-left: auto;
        margin-right: 104px;
    }

    #floor .map {
        margin: 0;
        position: absolute;
        left: 110px;
        top: -360px;
        width: auto;
    }

    #floor .group {
        position: relative;
        min-height: 393px;
    }

    #floor .group .photo2 {
        margin-bottom: 20px;
        position: absolute;
        left: calc(50% - 50vw);
        top: -293px;
        height: 690px;
    }

    #floor .group .col {
        width: 487px;
        margin-left: auto;
        position: relative;
        z-index: 6;
    }

    #floor .group .col h3 {
        font-size: 30px;
        margin-bottom: 56px;
        letter-spacing: 7px;
    }

    #floor::after {
        top: -2px;
        width: calc(50% + -296px);
        height: 1709px;
    }
}


/* Menu */
@media screen and (min-width: 768px) {
    #menu {
        margin-top: 140px;
        padding-bottom: 190px;
    }
}