.system-cover {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.system-cover::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
}
.system-cover-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #fff;
}
.about-section {
    background: #fff;
    padding: 5rem 0;
}
.about-section img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0,0,0,.15);
}