.social-support{
    background: linear-gradient(135deg, #1877f2, #0d47a1);
    color:#fff;padding:30px 0;
    position:relative;
    overflow:hidden;text-align: center;
}

/* hiệu ứng ánh sáng nền */
.social-support::before{
    content:"";
    position:absolute;
    width:300px;
    height:300px;
    background:rgba(255,255,255,0.1);
    border-radius:50%;
    top:-100px;
    right:-100px;
    filter:blur(60px);
}

.social-support::after{
    content:"";
    position:absolute;
    width:250px;
    height:250px;
    background:rgba(255,255,255,0.08);
    border-radius:50%;
    bottom:-80px;
    left:-80px;
    filter:blur(60px);
}

/* nội dung */
.social-support h3{
    font-size:26px;
    font-weight:700;
    margin-bottom:10px;
}

.social-support p{
    opacity:.9;
    margin-bottom:15px;
    font-size:15px;
    line-height:1.6;
}

/* hotline */
.social-support p a,
.social-support p strong{
    color:#fff;
    font-weight:600;
}

/* nút */
.social-actions{
    display:flex;
    justify-content:center;
    gap:15px;
    flex-wrap:wrap;
    margin-top:20px;
}

.social-actions .btn{
    background:#fff;
    color:#1877f2;
    padding:12px 20px;
    border-radius:30px;
    text-decoration:none;
    font-weight:600;
    transition:all .3s ease;
    box-shadow:0 4px 15px rgba(0,0,0,0.2);
}

/* hover đẹp */
.social-actions .btn:hover{
    background:#e3f2fd;
    transform:translateY(-3px) scale(1.05);
    box-shadow:0 8px 25px rgba(0,0,0,0.3);
}

/* responsive */
@media(max-width:768px){
    .social-support{
        padding:40px 15px;
    }

    .social-support h3{
        font-size:22px;
    }

    .social-actions .btn{
        width:100%;
        text-align:center;
    }
}