:root {
    color: #172033;
    background: #f4f6fa;
    font-family: "PT Sans", Arial, sans-serif;
}

body {
    min-height: 100vh;
    margin: 0;
}

.grading-rules {
    width: min(820px, calc(100% - 32px));
    margin: 0 auto;
    padding: 36px 0 64px;
}

.grading-rules__back {
    color: #3157a4;
    font-size: 16px;
    text-decoration: none;
}

.grading-rules__back:hover {
    text-decoration: underline;
}

.grading-rules__header {
    margin: 34px 0 28px;
}

.grading-rules__eyebrow {
    margin: 0 0 8px;
    color: #63708a;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.grading-rules h1 {
    margin: 0;
    font-size: clamp(32px, 6vw, 52px);
    line-height: 1.05;
}

.grading-rules__header > p:last-child {
    max-width: 680px;
    margin: 18px 0 0;
    color: #526078;
    font-size: 20px;
    line-height: 1.45;
}

.grading-rules__card {
    margin-top: 20px;
    padding: 26px 30px;
    border: 1px solid #dce2ed;
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 10px 28px rgb(29 45 80 / 8%);
}

.grading-rules__card h2 {
    margin: 0;
    font-size: 26px;
}

.grading-rules__card p {
    color: #46546d;
    font-size: 17px;
    line-height: 1.55;
}

.formula {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 24px 0;
    overflow-x: auto;
    color: #101828;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(26px, 5vw, 38px);
    font-style: italic;
    white-space: nowrap;
}

.formula sub {
    font-size: 0.55em;
}

.formula--secondary {
    margin-top: 34px;
    padding-top: 24px;
    border-top: 1px solid #e1e6ef;
}

.fraction {
    display: inline-grid;
    grid-template-rows: auto auto;
    min-width: 112px;
    text-align: center;
}

.fraction > span:first-child {
    padding: 0 10px 5px;
    border-bottom: 2px solid currentColor;
}

.fraction > span:last-child {
    padding-top: 5px;
}

.fraction--wide {
    min-width: 310px;
}

.grading-rules__terms {
    margin: 0;
    color: #46546d;
    font-size: 17px;
}

.grading-rules__terms div {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.grading-rules__terms dt {
    min-width: 70px;
    color: #172033;
    font-family: Georgia, "Times New Roman", serif;
    font-style: italic;
}

.grading-rules__terms dd {
    margin: 0;
}

@media (max-width: 560px) {
    .grading-rules {
        width: min(100% - 20px, 820px);
        padding-top: 22px;
    }

    .grading-rules__header {
        margin-top: 26px;
    }

    .grading-rules__card {
        padding: 21px 18px;
        border-radius: 14px;
    }

    .fraction--wide {
        min-width: 250px;
    }
}