body
{
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background:
        linear-gradient
        (
            135deg,
            #111827,
            #25324a
        );
}

.installer-shell
{
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.installer-card
{
    width: 100%;
    max-width: 900px;
    padding: 30px;
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
}

.brand-mark
{
    width: 54px;
    height: 54px;
    margin: 0 auto 12px;
    border-radius: 15px;
    display: grid;
    place-items: center;
    background: #111827;
    color: #ffffff;
    font-weight: 800;
    font-size: 21px;
}

.panel
{
    border: 1px solid #dee3ea;
    border-radius: 14px;
    padding: 18px;
}

.requirement-item
{
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid #dee3ea;
    border-radius: 8px;
    padding: 12px;
}

.success-icon
{
    width: 74px;
    height: 74px;
    margin: 0 auto 18px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: #dcfce7;
    color: #166534;
    font-size: 38px;
    font-weight: 800;
}