.full-about-core {
    padding: 45px 0;
}

.core-header {
    margin-bottom: 30px;
    text-align: center;
}

.core-subtitle {


    text-transform: uppercase;
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.core-title {

    text-transform: uppercase;
    margin: 0;
    line-height: 1.3;
}

.core-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.core-item {
    background-color: var(--panel-graphite);
    border: 1px solid var(--ba-border);
    border-radius: 0;
    /* Vuông vức theo B-ALERT */
    padding: 30px 20px;
    text-align: center;
    transition: all 0.3s ease;
}

.core-item:hover {
    border-color: var(--color-hover);
    box-shadow: 0 0 15px var(--ba-chrome-glow);
}

.core-item-icon {
    margin-bottom: 20px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.core-item-icon img {
    max-height: 100%;
    width: auto;
    object-fit: contain;
}

.core-item-title {
    /* color: var(--color-hover); */

    margin-bottom: 15px;
    line-height: 1.4;
}

.core-item-desc {
    font-size: 15px;
    line-height: 1.6;
    text-align: center;
}

/* Responsive */
@media (max-width: 991px) {
    .core-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .core-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .core-item {
        padding: 22px 12px 18px;
    }

    .core-item-icon {
        height: 40px;
        margin-bottom: 14px;
    }

    .core-item-title {
        font-size: 15px;
        margin-bottom: 8px;
    }

    .core-item-desc {
        font-size: 13px;
        line-height: 1.45;
    }

    .core-title {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .core-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .core-item {
        padding: 18px 8px 14px;
    }

    .core-item-icon {
        height: 34px;
        margin-bottom: 10px;
    }

    .core-item-title {
        font-size: 13.5px;
        line-height: 1.3;
        margin-bottom: 6px;
    }

    .core-item-desc {
        font-size: 12px;
        line-height: 1.4;
    }
}