/* SNS共有ボタン（Facebook / X / LINE / Instagram）。ヘッダー画像の直下に配置 */
.seminar-share {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin: -10px 0 28px;
    justify-content: flex-end;
}
.seminar-share__label {
    font-size: 13px;
    font-weight: 600;
    color: #555;
}
.seminar-share__list {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.seminar-share__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    color: #fff !important;
    font-size: 17px;
    line-height: 1;
    text-decoration: none !important;
    transition: opacity .15s ease, transform .15s ease;
    outline: none !important;
}
.seminar-share__btn:hover {
    opacity: .85;
    transform: translateY(-1px);
    color: #fff;
}
.seminar-share__btn--facebook, .seminar-share__btn--facebook:is(:active, :focus ) { 
    background: #1877f2; 
}
.seminar-share__btn--x { background: #000; }
.seminar-share__btn--line { background: #06c755; }
.seminar-share__btn--instagram {
    background: radial-gradient(circle at 30% 107%, #fdf497 0%, #fd5949 45%, #d6249f 60%, #285aeb 90%);
}
.seminar-share__copied {
    font-size: 12px;
    color: #17a2b8;
    font-weight: 600;
}

/* スマホ：やや小さめ＋折り返し */
@media (max-width: 575.98px) {
    .seminar-share {
        gap: 8px;
        margin: 0 0 22px;
    }
    .seminar-share__btn {
        width: 34px;
        height: 34px;
        font-size: 15px;
    }
}