.hsc28-fb-group-btn {
    position: fixed;
    top: 14px;
    right: 16px;
    z-index: 1100;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 9px 14px;
    border-radius: 999px;
    background: #1877f2;
    color: #fff !important;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 13px;
    font-weight: 700;
    line-height: 1.15;
    text-align: center;
    text-decoration: none !important;
    box-shadow: 0 8px 20px rgba(24, 119, 242, 0.28);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.hsc28-fb-group-btn:hover,
.hsc28-fb-group-btn:focus {
    background: #0f63d4;
    color: #fff !important;
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(24, 119, 242, 0.34);
}

@media (max-width: 575.98px) {
    .hsc28-fb-group-btn {
        top: 10px;
        right: 10px;
        max-width: 44vw;
        min-height: 36px;
        padding: 8px 10px;
        font-size: 11px;
    }
}