.build-system-popup {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: none;
}

.build-system-popup.is-active {
    display: block;
}

.build-system-popup__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
}

.build-system-popup__content {
    position: relative;
    z-index: 2;
    width: min(560px, calc(100% - 32px));
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    margin: 40px auto;
    padding: 32px;
    background: #fff;
    border-radius: 14px;
}

.build-system-popup__close {
    position: absolute;
    top: 14px;
    right: 16px;
    border: 0;
    background: transparent;
    font-size: 32px;
    line-height: 1;
    cursor: pointer;
}