.formula-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem 3rem;
}

.formula-box {
    border-right: 1px solid #333;
    padding-right: 2rem;
}

.formula-box:nth-child(2n) {
    border-right: none;
}

.formula-box h3 {
    border-left: 5px solid #1f4fbf;
    padding-left: 0.6em;
    margin-bottom: 0.8em;
}

.formula-box ol {
    margin-left: 1.5em;
}

.formula-box li {
    margin-bottom: 0.45em;
}

@media screen and (max-width: 768px) {
    .formula-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .formula-box {
        border-right: none;
        border-bottom: 1px solid #ddd;
        padding-right: 0;
        padding-bottom: 1.2rem;
    }
}