.tool-content {
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    padding: 1.2em;
    border-radius: .6em;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.7em;
}

.system-upgrade{
    display: flex;
    align-items: center;
    justify-content: start;
    flex-wrap: wrap;
    gap: 0.8em
}

.system-upgrade li{
    width: calc(25% - 0.6em);
    margin-bottom: 0;
    border: solid 1px #ddd;
    padding: 0.5em;
    cursor: pointer;
}

.system-upgrade li img{
    display: block;
    width: 100%;
}

@media (max-width: 768px) {
    .tool-content {
        padding: .8em !important;
        box-shadow: unset;
    }

    .system-upgrade li{
        width: calc(50% - 0.4em);
        padding: 0;
        border-width: 0;
    }
}