/* 言語切り替え機能 */
#usermenu {
    position: fixed;
    bottom: 0.75em;
    right: 0.75em;
    z-index: 100;
}
#usermenu details {
    font-size: 14px !important;
    background: #ececec;
    color: #333;
    border-radius: 5px;
    cursor: pointer;
}
#usermenu details summary {
    list-style: none;
    padding: 0.5em;
}
#usermenu details summary::-webkit-details-marker { display: none; }
#usermenu details summary i {
    vertical-align: bottom;
    color: #be4d4d;
}
#usermenu details a { display: block; }
#usermenu details li {
    display: block;
    padding: 0.5em;
    border-top: 1px solid #ccc;
}