.floating-cta {
    position: fixed;
    right: 20px;
    bottom: 30px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

    .floating-cta a {
        width: 58px;
        height: 58px;
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        color: #fff;
        font-size: 22px;
        text-decoration: none;
        box-shadow: 0 5px 20px rgba(0,0,0,.25);
        transition: .25s;
    }

        .floating-cta a:hover {
            transform: scale(1.1);
        }

.cta-phone {
    background: #dc3545;
}

.cta-zalo {
    background: #0088ff;
    font-size: 14px !important;
    font-weight: 700;
}

.cta-messenger {
    background: #006aff;
}

.cta-register {
    background: #198754;
}