.custom-share-buttons {
    width:180px;
    padding:20px;
    background:rgba(255,255,255,.7);
    border-radius: 8px 8px 0 0;
    position:fixed;
    bottom:0;
    right:0;
    z-index:2;
}
.custom-share-buttons .icon_line::before {
    content:"";
    background:url(https://discover-u.nuskin.jp/2025/wp-content/themes/nuskin/img/icon_line.svg);
    background-size:cover;
    width:19px; height:18px;
    display:inline-block;
    margin-right:5px;
}
.custom-share-buttons .icon_copy::before {
    content:"";
    background:url(https://discover-u.nuskin.jp/2025/wp-content/themes/nuskin/img/icon_copy.svg);
    background-size:cover;
    width:15px; height:15px;
    display:inline-block;
    margin-right:5px;
}
/* ボタン共通のスタイル */
.custom-share-buttons .share-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width:140px;
    height:32px;
    border-radius: 8px;
    font-size:14px;
    color: #fff;
    font-weight: bold;
    text-decoration: none;
    transition: opacity 0.3s ease;
    border: none;
    cursor: pointer;
}
.custom-share-buttons .share-btn span {
    line-height:1 !important;
    color:#fff;
    display: flex;
    align-items: center;
}
.custom-share-buttons .share-btn:hover {
    opacity: 0.8;
}
.custom-share-buttons .line-btn {
    background-color: #06c755;
    margin-bottom:10px;
}
.custom-share-buttons .copy-btn {
    background-color: #4A4A4A;
}
@media screen and (max-width: 767px) {
    .custom-share-buttons {
        width:100%;
        display:flex;
        padding:0;
    }
    .custom-share-buttons .share-btn {
        width:50%;
        border-radius:0;
        height:40px;
    }
    .custom-share-buttons .line-btn {margin-bottom:0;}
    footer.container.underbtn {padding:0 40px 40px;}
}
@media screen and (max-width: 480px) {
    footer.container.underbtn {padding:0 20px 40px;}
}