.imiN_header {
    position: fixed;
    display: flex;
    align-items: center;
    top: 0;
    z-index: 9999;
    background-color: #00000099;
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    color: #ffffffff;
}

@supports (width: 100dvw) {
    .imiN_header {
        width: 100dvw;
    }
}
@supports not (width: 100dvw) {
    .imiN_header {
        width: 100vw;
    }
}

.imiN_loading {
    line-height: 2.09375rem;
}

.imiN_list,
.imiN_news:hover .imiN_notice {
    position: fixed;
    background-color: #000000cc;
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

.imiN_header_inner {
    display: flex;
    width: 100%;
    font-size: .875rem;
    line-height: 1.25rem;
}

.imiN_header_inner .pc_only,
.imiN_header_inner input[type=checkbox],
.imiN_list {
    display: none;
}

.imiN_header_inner a {
    text-decoration: none;
}

.imiN_header_inner a.fault,
.imiN_header_inner label[for=menu] {
    font-weight: 800;
}

.imiN_header_inner label[for=menu] {
    z-index: 9999;
    display: block;
    padding: .25rem;
}

.imiN_header_inner label[for=menu]:after {
    content: "▼";
}

.imiN_list {
    left: 0;
    right: 0;
    z-index: 9998;
    width: 100%;
    flex: 1 1 0%;
    list-style-type: none;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    font-size: 1.5rem;
    line-height: 2rem;
}

@supports (height: 100dvh) {
    .imiN_list {
        height: 100dvh;
    }
}
@supports not (height: 100dvh) {
    .imiN_list {
        height: 100vh;
    }
}

.imiN_header_inner #menu:checked+.imiN_list,
.imiN_list a,
.imiN_news {
    display: flex;
}

.imiN_list a {
    align-items: center;
    justify-content: center;
    border-style: none;
    padding: .75rem .5rem;
    -webkit-backdrop-filter: brightness(1);
    backdrop-filter: brightness(1);
}

.imiN_list a:is(:hover, :focus, :active) {
    -webkit-backdrop-filter: brightness(1.75);
    backdrop-filter: brightness(1.75);
}

.imiN_news {
    z-index: 9999;
    margin-left: auto;
    align-items: center;
    justify-content: flex-end;
    gap: .5rem;
}

.imiN_header_inner .hiragana {
    font-size: .7em;
}

.imiN_header_inner .sp_only {
    display: block;
}

.imiN_notice {
    display: none;
    line-height: 1.625;
}

.imiN_news:hover .imiN_notice {
    right: .5rem;
    top: 2.5rem;
    padding: .5rem;
    text-align: center;
    font-size: .4rem;
}

.imiN_list .imiN_notice {
    position: absolute;
    bottom: 1rem;
    z-index: 9999;
    display: block;
    width: 100%;
    text-align: center;
    font-size: .5rem;
}

@media (min-width: 880px) {
    .imiN_header_inner .sp_only,
    .imiN_header_inner label[for=menu],
    .imiN_list .imiN_notice {
        display: none;
    }

    .imiN_list {
        position: static;
        z-index: auto;
        display: flex;
        height: auto;
        width: auto;
        flex-direction: row;
        justify-content: flex-start;
        background-color: transparent;
        font-size: 1rem;
        line-height: 1.5rem;
        -webkit-backdrop-filter: none;
        backdrop-filter: none;
    }

    .imiN_list a {
        padding-top: 0;
        padding-bottom: 0;
        color: inherit;
    }

    .imiN_list a.fault {
        margin-right: 1rem;
        padding: .25rem 1rem;
    }

    .imiN_header_inner .pc_only,
    .imiN_news:hover .imiN_notice {
        display: block;
    }
}