/* ===== BANNER ===== */
.hero-banner img{
    width:100%;
    height:260px;
    object-fit:cover;
}

/* ===== GIỚI THIỆU ===== */
.gioithieu{
    padding:40px 15px;
    background:#fff;
}

.gioithieu-box{
    background:#fff;
    padding:30px;
    border-radius:10px;
    box-shadow:0 4px 20px rgba(0,0,0,0.08);
}

/* TITLE */
.gioithieu-title{
    font-size:28px;
    font-weight:700;
    color:#c00;
    margin-bottom:20px;
    line-height:1.4;
    border-left:5px solid #c00;
    padding-left:12px;
}

/* CONTENT */
.gioithieu-content{
    font-size:16px;
    line-height:1.8;
    color:#333;
}

/* LIST đẹp */
.gioithieu-content ul{
    padding-left:0;
    list-style:none;
}

.gioithieu-content ul li{
    position:relative;
    padding-left:20px;
    margin-bottom:8px;
}

.gioithieu-content ul li::before{
    content:"–";
    position:absolute;
    left:0;
    color:#c00;
}

/* ẨN SEO */
.seo-hidden{
    font-size:0;
    height:0;
    overflow:hidden;
}

/* MOBILE */
@media(max-width:768px){
    .gioithieu-title{
        font-size:22px;
    }

    .gioithieu-box{
        padding:20px;
    }
    .gioithieu{
        padding:20px 0px;
        background:#fff;
    }
}


/* ===== TIÊU ĐỀ LIÊN QUAN ===== */
.title-lienquan{
    position: relative;
    font-size: 26px;
    font-weight: 700;
    color: #c00;
    text-transform: uppercase;
    margin-bottom: 25px;
    display: inline-block;
}

/* Gạch dưới sang */
.title-lienquan::after{
    content: "";
    display: block;
    width: 60%;
    height: 3px;
    background: linear-gradient(90deg, #c00, transparent);
    margin: 8px auto 0;
}

/* Hiệu ứng nền nhẹ */
.title-lienquan span{
    padding: 5px 12px;
    background: #fff;
}

/* MOBILE */
@media(max-width:768px){
    .title-lienquan{
        font-size: 20px;
    }
}



/* ===== SECTION ===== */
.tintucgioithieu{
    padding:40px 0;

}

/* ===== TITLE ===== */
.title-tintucgioithieu{
    text-align:center;
    margin-bottom:30px;
}

.title-tintucgioithieu span{
    font-size:22px;
    font-weight:700;
    color:#c00;
    text-transform:uppercase;
    position:relative;
    padding-bottom:8px;
}

.title-tintucgioithieu span::after{
    content:"";
    position:absolute;
    bottom:0;
    left:50%;
    transform:translateX(-50%);
    width:60px;
    height:3px;
    background:#c00;
}

/* ===== GRID ===== */
.tintucgioithieu-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
    list-style:none;
    padding:0;
    margin:0;
}

/* ===== ITEM ===== */
.tintucgioithieu-item article{
    background:#fff;
    border-radius:12px;
    overflow:hidden;
    box-shadow:0 4px 15px rgba(0,0,0,0.08);
    transition:0.3s;
    height:100%;
}

.tintucgioithieu-item article:hover{
    transform:translateY(-5px);
    box-shadow:0 8px 25px rgba(0,0,0,0.12);
}

/* ===== IMAGE ===== */
.tintucgioithieu-thumb{
    overflow:hidden;
}

.tintucgioithieu-thumb img{
    width:100%;
    height:180px;
    object-fit:cover;
    transition:0.4s;
}

.tintucgioithieu-item:hover img{
    transform:scale(1.05);
}

/* ===== LINK ===== */
.tintucgioithieu-item a{
    text-decoration:none;
    color:inherit;
    display:block;
}

/* ===== TITLE ===== */
.tintucgioithieu-title{
    font-size:16px;
    font-weight:600;
    color:#111;
    padding:10px 12px 5px;
    line-height:1.4;

    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;

    min-height:44px;
}

.tintucgioithieu-item:hover .tintucgioithieu-title{
    color:#c00;
}

/* ===== DESC ===== */
.tintucgioithieu-desc{
       font-size: 16px;
    color: #666;
    padding: 0 12px 12px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 76px;
}

/* ===== RESPONSIVE ===== */
@media (max-width:992px){
    .tintucgioithieu-grid{
        grid-template-columns:repeat(2,1fr);
    }
}

@media (max-width:576px){
    .tintucgioithieu-grid{
        grid-template-columns:1fr;
    }
}