:root {
    --top_mv_back_logo_width: 40vh;
}

body {
    background-color: black;
    position: relative;
    max-width: none;
    padding: 0;
}

a {
    text-decoration: none;
}

.top {
    height: 100%;
}

#overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: white;
    opacity: 0; /* 最初は非表示 */
    pointer-events: none; /* イベントをブロックしないように */
    z-index: 1000; /* 画面最前面に表示するためのz-index */
}

.top_mv {
    width: 100%;
    height: 100%;
    text-align: center;
}

.top_mv_back {
    width: 100%;
    text-align: center;
    display: inline-block;
}

.top_mv_back_logo {
    width: var(--top_mv_back_logo_width);
    margin: 25vh auto 0 auto;
    opacity: 0;
    fill: #ffffff;
}

.top_mv_content {
    width: 100%;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.top_mv_content_link {
    color: white;
    font-size: 3vh;
    width: 100%;
}

.top_mv_content .sns_icon_wrapper {
    width: var(--top_mv_back_logo_width);
    height: 3vh;
    margin-top: 10vh;
    display: flex;
    justify-content: space-around;
}

.sns_icon_wrapper .sns_icon {
    height: 100%;
}

.sns_icon img {
    height: 100%;
}

.sns_icon:hover {
    transform: scale(1.1);
}

/*pc向け*/
@media screen and (min-width: 751px) {
}

/*スマホ向け*/
@media screen and (max-width: 750px) {
}

/*リンクにマウスホバーした時*/
.top_mv_content_link {
    position: relative;
    display: inline-block;
    transition: .3s;
}

.top_mv_content_link::before,
.top_mv_content_link::after {
    position: absolute;
    content: '';
    width: 0;
    height: 1px;
    background-color: #ffffff;
    transition: .3s;
}

.top_mv_content_link::before {
    top: 0;
    left: 0;
}

.top_mv_content_link::after {
    bottom: 0;
    right: 0;
}

.top_mv_content_link:hover::before,
.top_mv_content_link:hover::after {
    width: 100%;
}

#news_area {
    width: 300px;
    height: 300px;
    margin-top: 40px;
}

#news_area img {
    width: 300px;
    height: 300px;
    object-fit: contain;
}