.calculator-page main {
    background: #0c0c0b;
}

.oak-calculator {
    --calc-bg: #0c0c0b;
    --calc-panel: #141412;
    --calc-panel-2: #1a1916;
    --calc-line: rgba(255, 255, 255, 0.11);
    --calc-line-strong: rgba(221, 166, 87, 0.4);
    --calc-text: #f3efe7;
    --calc-muted: #b8b3aa;
    --calc-amber: #d9a455;
    --calc-amber-light: #efc27e;
    --calc-oak: #916335;
    --calc-danger: #e78b77;
    position: relative;
    isolation: isolate;
    overflow: hidden;
    color: var(--calc-text);
    background: var(--calc-bg);
    font-family: var(--font-body);
}

.oak-calculator *,
.oak-calculator *::before,
.oak-calculator *::after {
    box-sizing: border-box;
}

.oak-calculator button,
.oak-calculator input {
    font: inherit;
}

.oak-calculator button {
    color: inherit;
}

.oak-calculator a {
    color: inherit;
}

.oak-calculator .oak-calculator__smoke {
    position: absolute;
    width: 45vw;
    height: 45vw;
    border-radius: 50%;
    filter: blur(90px);
    opacity: .13;
    pointer-events: none;
    z-index: -1;
}

.oak-calculator .oak-calculator__smoke--a {
    top: -20vw;
    right: -6vw;
    background: radial-gradient(circle, #b48c5a 0, #6e6a63 35%, transparent 72%);
}

.oak-calculator .oak-calculator__smoke--b {
    top: 52vh;
    left: -28vw;
    background: radial-gradient(circle, #81786b 0, transparent 68%);
}

.oak-calculator .hero,
.oak-calculator .comparison,
.oak-calculator .education {
    width: 100%;
    margin-inline: auto;
    padding-inline: max(24px, calc((100% - 1180px) / 2));
}

.oak-calculator .hero {
    min-height: 0;
    display: grid;
    grid-template-columns: .84fr 1.16fr;
    gap: 56px;
    align-items: start;
    background: var(--calc-bg);
    padding-top: 54px;
    padding-bottom: 78px;
}

.oak-calculator .eyebrow {
    display: block;
    margin: 0 0 18px;
    color: var(--calc-amber);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .18em;
    line-height: 1.4;
}

.oak-calculator .eyebrow::before {
    display: none;
}

.oak-calculator h1,
.oak-calculator h2,
.oak-calculator h3,
.oak-calculator p {
    margin-top: 0;
}

.oak-calculator h1 {
    margin-bottom: 22px;
    font-family: var(--font-display);
    font-size: clamp(28px, 3.2vw, 44px);
    line-height: 1.06;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

.oak-calculator h1 em,
.oak-calculator h2 em {
    color: var(--calc-amber-light);
    font-style: normal;
    font-weight: inherit;
}

.oak-calculator .intro {
    max-width: 510px;
    color: #c1bdb4;
    font-size: 16px;
    line-height: 1.62;
}

.oak-calculator .hero-facts {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 31px;
}

.oak-calculator .hero-facts span {
    border: 1px solid var(--calc-line);
    border-radius: 999px;
    padding: 9px 12px;
    color: var(--calc-muted);
    font-size: 11px;
}

.oak-calculator .calculator-card {
    padding: 24px;
    background: linear-gradient(145deg, rgba(29,28,25,.98), rgba(17,17,15,.98));
    border: 1px solid var(--calc-line);
    border-radius: 24px;
    box-shadow: 0 40px 90px rgba(0,0,0,.4);
}

.oak-calculator .card-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.oak-calculator .step-label {
    margin-bottom: 7px;
    color: var(--calc-muted);
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: .16em;
}

.oak-calculator .card-heading h2 {
    margin: 0;
    font: 700 26px/1.15 var(--font-display);
    text-transform: uppercase;
}

.oak-calculator .text-button {
    border: 0;
    background: none;
    color: var(--calc-muted);
    padding: 4px;
    cursor: pointer;
    font-size: 12px;
    text-decoration: underline;
    text-underline-offset: 4px;
}

.oak-calculator .text-button:hover {
    color: var(--calc-text);
}

.oak-calculator fieldset {
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
}

.oak-calculator .field-block legend,
.oak-calculator .number-field > span:first-child {
    margin-bottom: 9px;
    color: #d2cec6;
    font-size: 12px;
    font-weight: 600;
}

.oak-calculator .segmented {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.oak-calculator .fraction-button {
    display: flex;
    flex-direction: column;
    gap: 6px;
    text-align: left;
    padding: 13px 14px;
    border: 1px solid var(--calc-line);
    border-radius: 14px;
    background: #11110f;
    cursor: pointer;
    transition: .2s ease;
}

.oak-calculator .fraction-button strong {
    font-size: 18px;
}

.oak-calculator .fraction-button span {
    color: var(--calc-muted);
    font-size: 10px;
}

.oak-calculator .fraction-button:hover {
    border-color: rgba(217,164,85,.45);
    transform: translateY(-1px);
}

.oak-calculator .fraction-button.active {
    border-color: var(--calc-amber);
    background: linear-gradient(135deg, rgba(217,164,85,.16), rgba(217,164,85,.04));
    box-shadow: inset 0 0 0 1px rgba(217,164,85,.08);
}

.oak-calculator .fraction-button:focus-visible,
.oak-calculator .text-button:focus-visible,
.oak-calculator input:focus-visible,
.oak-calculator summary:focus-visible {
    outline: 2px solid var(--calc-amber-light);
    outline-offset: 3px;
}

.oak-calculator .input-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 18px;
}

.oak-calculator .number-field {
    display: flex;
    flex-direction: column;
}

.oak-calculator .input-shell {
    display: flex;
    align-items: center;
    border: 1px solid var(--calc-line);
    border-radius: 13px;
    background: #10100f;
    overflow: hidden;
    transition: border-color .2s;
}

.oak-calculator .input-shell:focus-within {
    border-color: var(--calc-amber);
}

.oak-calculator .input-shell input {
    width: 100%;
    min-width: 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--calc-text);
    padding: 11px 4px 11px 12px;
    font-weight: 700;
    font-size: 19px;
}

.oak-calculator .input-shell b {
    padding: 11px 12px;
    color: var(--calc-amber-light);
    font-size: 12px;
}

.oak-calculator .number-field small {
    margin-top: 6px;
    color: #918c84;
    font-size: 10px;
}

.oak-calculator .validation {
    min-height: 18px;
    margin: 8px 0 0;
    color: var(--calc-danger);
    font-size: 11px;
}

.oak-calculator .results {
    border-top: 1px solid var(--calc-line);
    padding-top: 16px;
}

.oak-calculator .primary-result {
    padding-bottom: 14px;
}

.oak-calculator .primary-result > span,
.oak-calculator .result-tile > span {
    display: block;
    color: var(--calc-muted);
    font-size: 11px;
}

.oak-calculator .primary-result > strong {
    display: block;
    margin: 3px 0 5px;
    color: var(--calc-amber-light);
    font: 700 clamp(38px, 4vw, 52px)/1.1 var(--font-display);
    font-variant-numeric: tabular-nums;
}

.oak-calculator .primary-result strong small {
    color: var(--calc-muted);
    font: 600 14px var(--font-body);
}

.oak-calculator .primary-result p {
    margin: 0;
    color: #969189;
    font-size: 11px;
}

.oak-calculator .result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.oak-calculator .result-tile {
    padding: 12px;
    border: 1px solid var(--calc-line);
    border-radius: 12px;
    background: rgba(255,255,255,.018);
}

.oak-calculator .result-tile.full {
    grid-column: 1 / -1;
}

.oak-calculator .result-tile strong {
    display: block;
    margin: 7px 0 4px;
    font-size: 18px;
    font-variant-numeric: tabular-nums;
}

.oak-calculator .result-tile small {
    color: #99948b;
    font-size: 10px;
    line-height: 1.4;
}

.oak-calculator .assumptions {
    margin-top: 9px;
    border-top: 1px solid var(--calc-line);
}

.oak-calculator .assumptions summary {
    display: flex;
    justify-content: space-between;
    padding: 15px 0 0;
    color: var(--calc-muted);
    cursor: pointer;
    font-size: 11px;
    list-style: none;
}

.oak-calculator .assumptions summary::-webkit-details-marker {
    display: none;
}

.oak-calculator .assumptions[open] summary span {
    transform: rotate(45deg);
}

.oak-calculator .assumptions summary span {
    color: var(--calc-amber);
    font-size: 18px;
    line-height: .7;
    transition: transform .2s;
}

.oak-calculator .assumptions-body {
    padding-top: 12px;
    color: #b0aba2;
    font-size: 12px;
    line-height: 1.6;
}

.oak-calculator .assumptions-body p {
    margin-bottom: 10px;
}

.oak-calculator .formula {
    margin: 11px 0;
    padding: 12px;
    border-left: 2px solid var(--calc-amber);
    background: rgba(217,164,85,.06);
    color: var(--calc-text);
    font: 14px/1.6 var(--font-mono);
}

.oak-calculator .comparison {
    padding-top: 92px;
    padding-bottom: 92px;
    background: var(--calc-bg);
    border-top: 1px solid var(--calc-line);
}

.oak-calculator .section-heading {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: end;
    margin-bottom: 42px;
}

.oak-calculator .section-heading h2,
.oak-calculator .education h2 {
    margin: 0;
    font: 700 clamp(28px, 3.2vw, 42px)/1.12 var(--font-display);
    letter-spacing: 0;
    text-transform: uppercase;
}

.oak-calculator .section-heading > p {
    margin: 0;
    color: var(--calc-muted);
    line-height: 1.7;
}

.oak-calculator .comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.oak-calculator .fraction-card {
    padding: 28px;
    border: 1px solid var(--calc-line);
    border-radius: 20px;
    background: rgba(20,20,18,.7);
    transition: .2s ease;
}

.oak-calculator .fraction-card.highlighted {
    border-color: var(--calc-line-strong);
    background: linear-gradient(135deg, rgba(217,164,85,.10), rgba(20,20,18,.75));
}

.oak-calculator .fraction-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.oak-calculator .fraction-top span {
    font: 600 24px/1.2 var(--font-display);
}

.oak-calculator .fraction-top b {
    color: var(--calc-amber);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: .09em;
}

.oak-calculator .area-value {
    display: flex;
    gap: 13px;
    align-items: center;
    margin: 32px 0 20px;
}

.oak-calculator .area-value strong {
    color: var(--calc-amber-light);
    font: 700 48px/1.1 var(--font-display);
    font-variant-numeric: tabular-nums;
}

.oak-calculator .area-value span {
    color: var(--calc-muted);
    font-size: 10px;
    line-height: 1.4;
}

.oak-calculator .bar {
    height: 3px;
    margin-bottom: 20px;
    background: rgba(255,255,255,.08);
    overflow: hidden;
}

.oak-calculator .bar i {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--calc-oak), var(--calc-amber-light));
}

.oak-calculator .fraction-card p {
    color: #b2aea6;
    line-height: 1.65;
    font-size: 14px;
}

.oak-calculator .fraction-card > small {
    color: #6f6c65;
}

.oak-calculator .education {
    display: grid;
    grid-template-columns: .42fr 1.58fr;
    gap: 78px;
    padding-top: 92px;
    padding-bottom: 92px;
    background: var(--calc-bg);
    border-top: 1px solid var(--calc-line);
}

.oak-calculator .education-label {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.oak-calculator .not-equal {
    color: rgba(217,164,85,.25);
    font: 400 150px/.8 var(--font-body);
}

.oak-calculator .education-copy .lead {
    max-width: 780px;
    margin: 28px 0 42px;
    color: #bbb7ae;
    font-size: 18px;
    line-height: 1.7;
}

.oak-calculator .science-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 38px;
}

.oak-calculator .science-grid > div {
    border-top: 1px solid var(--calc-line);
    padding-top: 19px;
}

.oak-calculator .science-grid h3 {
    font: 600 20px/1.25 var(--font-display);
}

.oak-calculator .science-grid p {
    color: var(--calc-muted);
    font-size: 13px;
    line-height: 1.7;
}

.oak-calculator .notice {
    display: grid;
    grid-template-columns: .35fr 1.65fr;
    gap: 24px;
    margin-top: 38px;
    padding: 22px;
    border: 1px solid var(--calc-line-strong);
    border-radius: 14px;
    background: rgba(217,164,85,.055);
}

.oak-calculator .notice span {
    color: var(--calc-amber);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.oak-calculator .notice p {
    margin: 0;
    color: #cbc6bc;
    font-size: 13px;
    line-height: 1.6;
}

@media (max-width: 860px) {
    .oak-calculator .hero {
        grid-template-columns: 1fr;
        gap: 46px;
        min-height: auto;
    }

    .oak-calculator .hero-copy {
        max-width: 680px;
    }

    .oak-calculator .section-heading,
    .oak-calculator .education {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .oak-calculator .education-label {
        flex-direction: row;
    }

    .oak-calculator .not-equal {
        font-size: 90px;
    }
}

@media (max-width: 620px) {
    .oak-calculator .hero,
    .oak-calculator .comparison,
    .oak-calculator .education {
        width: 100%;
        padding-inline: 14px;
    }

    .oak-calculator .hero {
        padding: 48px 14px 64px;
    }

    .oak-calculator h1 {
        font-size: clamp(26px, 7.6vw, 36px);
    }

    .oak-calculator .intro {
        font-size: 15px;
    }

    .oak-calculator .calculator-card {
        padding: 20px;
        border-radius: 18px;
    }

    .oak-calculator .input-grid,
    .oak-calculator .result-grid,
    .oak-calculator .comparison-grid,
    .oak-calculator .science-grid,
    .oak-calculator .notice {
        grid-template-columns: 1fr;
    }

    .oak-calculator .result-tile.full {
        grid-column: auto;
    }

    .oak-calculator .fraction-button {
        padding: 14px 12px;
    }

    .oak-calculator .fraction-button strong {
        font-size: 16px;
    }

    .oak-calculator .comparison,
    .oak-calculator .education {
        padding: 74px 14px;
    }

    .oak-calculator .section-heading {
        gap: 22px;
    }

    .oak-calculator .notice {
        gap: 12px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .oak-calculator,
    .oak-calculator * {
        scroll-behavior: auto;
        transition-duration: .01ms !important;
    }
}