main>section>* {
    margin: auto 30px;
}

main::before {
    content: "";
    display: block;
    width: 50vw;
    height: 40px;
    border-right: 1px solid #000;
}

.sp_menu_btn {
    position: fixed;
    top: 30px;
    right: 30px;
    width: 40px;
    height: 20px;
    z-index: 10;
    background: none;
    border-color: #000;
    border-width: 2px;
    border-left-style: none;
    border-right-style: none;
    border-top-style: solid;
    border-bottom-style: solid;
}

.sp_menu_btn::before {
    content: "";
    display: block;
    position: absolute;
    top: 7px;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: #000;
}

.sp_menu, .sp_menu_trans {
    display: none;
    position: fixed;
    z-index: 8;
    width: 100vw;
    height: 100vh;
    height: 100lvh;
}

.sp_menu_trans::after {
    content: "";
    display: block;
    position: absolute;
    top: 0;
    left: 50vw;
    width: 1px;
    height: 100vh;
    background-color: #000;
}

.sp_menu{
    top: 100vw;
    top: 100lvw;
}

.sp_menu_trans{
    bottom: 100vh;
    bottom: 100lvh;
    background-color: #fff;
}

.wrap_img_sp_menu {
    display: flex;
}

.logo_sp_menu,
.img_sp_menu {
    position: relative;
    width: 50%;
    height: 200px;
}

.logo_sp_menu{
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
}

.logo_sp_menu > img{
    height: 170px;
}

.img_sp_menu > img{
    position: absolute;
    z-index: 2;
    width: 170px;
}

.img_sp_menu > img:nth-child(1){
    left: 46%;
    top: 50%;
}
.img_sp_menu > img:nth-child(2){
    left: 10%;
    top: 80%;
}

.wrap_nav_sp_menu {
    position: absolute;
    bottom: 0;
    padding: 80px 0 30px;
    width: 100%;
    background-color: #000;
}

.wrap_nav_sp_menu::before {
    content: "";
    display: block;
    position: absolute;
    top: 0;
    z-index: 1;
    width: 100vw;
    height: 50vw;
    background-image: url(/images/icegohoubi/cover_mv_sp.webp);
    background-size: contain;
}


.nav_sp_menu {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.nav_sp_menu_list {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 30px;
    z-index: 10;
    width: 150px;
}

.nav_sp_menu_list > li > a, .nav_footer_list > li > a{
    display: block;
}

.nav_sp_menu_list * {
    font-family: "aptly", sans-serif;
    font-size: 20px;
    color: #fff;
}

.nav_sp_menu_list .ruby {
    display: block;
    text-align: center;
    font-family: "Montserrat", sans-serif;
    font-size: 10px;
    font-weight: normal;
}

.nav_sp_menu .contact {
    margin: 40px auto 20px;
}


/* mv */

.mv::before {
    content: "";
    display: block;
    position: absolute;
    z-index: 1;
    width: 100vw;
    height: 50vw;
    background-image: url(/images/icegohoubi/cover_mv_sp.webp);
    background-size: contain;
}

/* nav_main */
.nav_main_list {
    flex-direction: column;
}

.nav_main_list>li:nth-of-type(even)>a {
    flex-direction: row-reverse;
}

.thumb img {
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.cat_menu {
    margin-bottom: 24px;
}

/* concept */
.img_concept {
    max-width: 330px;
}

/* topics */
/* menu */

@media screen and (min-width: 570px) {

    .list_topics,
    .list_menu {
        width: 510px;
    }
}

.name_menu {
    margin-top: 6px;
    font-size: 1em;
    font-weight: bold;
}

/* gallery */

.slide_gallery {
    margin: 0;
    width: 100%;
}