.calculator-page {
  --calc-ink: #0c1b2a;
  --calc-blue: #183d5d;
  --calc-brass: #b88a44;
  --calc-parchment: #f5f1e8;
  --calc-mist: #e6edf1;
  --calc-alert: #7a3038;
  color: var(--calc-ink);
  background: #faf9f6;
}

.calculator-site-header { background: #fff; border-bottom: 1px solid var(--line); }
.calculator-site-header .brand-dark { color: var(--pine); }
.calculator-header-inner { display: flex; min-height: 86px; align-items: center; justify-content: space-between; gap: 32px; }
.calculator-header-inner nav { display: flex; flex-wrap: wrap; gap: 24px; font-size: 14px; font-weight: 600; }
.calculator-header-inner nav a { padding: 8px 0; border-bottom: 1px solid transparent; }
.calculator-header-inner nav a:hover { border-color: var(--calc-brass); }

.calculator-hero { padding: 86px 0 78px; color: #fff; background: var(--calc-ink); }
.calculator-hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr); gap: clamp(48px, 8vw, 120px); align-items: end; }
.calculator-hero .crumbs { margin-bottom: 48px; color: rgba(255,255,255,.62); }
.calculator-hero .eyebrow { color: #dcc89e; }
.calculator-hero h1 { max-width: 820px; margin: 14px 0 0; font: 500 clamp(54px, 7vw, 92px)/.9 var(--display); letter-spacing: -.025em; }
.calculator-hero-copy > p:first-child { margin: 0 0 24px; color: rgba(255,255,255,.78); font-size: 17px; line-height: 1.75; }
.calculator-caution { margin: 0; padding: 22px 0 0 26px; border-top: 1px solid rgba(255,255,255,.18); border-left: 3px solid var(--calc-brass); color: rgba(255,255,255,.66); font-size: 13px; }
.calculator-caution strong { display: block; margin-bottom: 6px; color: #fff; }

.calculator-workspace { display: grid; grid-template-columns: minmax(280px, .7fr) minmax(0, 1.55fr); gap: clamp(38px, 6vw, 88px); padding-top: 88px; padding-bottom: 104px; align-items: start; }
.calculator-inputs { padding: 32px; background: var(--calc-parchment); border-top: 3px solid var(--calc-brass); box-shadow: 0 18px 45px rgba(12,27,42,.08); }
.calculator-panel-heading h2, .ledger-heading h2, .calculator-method h2, .source-heading h2 { margin: 8px 0 15px; font: 600 clamp(36px, 4vw, 52px)/.96 var(--display); }
.calculator-panel-heading > p:last-child, .ledger-heading > p, .source-heading > p:last-child { color: #58636d; font-size: 14px; line-height: 1.7; }
.calculator-field { display: grid; gap: 8px; margin-top: 22px; }
.calculator-field > span:first-child, .calculator-inputs legend { color: var(--calc-blue); font: 500 11px/1.4 var(--utility); letter-spacing: .06em; text-transform: uppercase; }
.calculator-field input { width: 100%; min-height: 50px; padding: 11px 13px; color: var(--calc-ink); background: #fff; border: 1px solid #bcc6cc; border-radius: 4px; font: 500 16px/1 var(--utility); }
.calculator-field input:focus { outline: 3px solid rgba(184,138,68,.28); outline-offset: 1px; border-color: var(--calc-blue); }
.calculator-field input[aria-invalid="true"] { border-color: var(--calc-alert); }
.calculator-field small, .calculator-inputs fieldset > p { margin: 0; color: #69727a; font-size: 12px; line-height: 1.55; }
.field-error { min-height: 0; color: var(--calc-alert); font-size: 12px; }
.field-error:not(:empty) { min-height: 18px; }
.calculator-inputs fieldset { margin: 28px 0 0; padding: 25px 0 0; border: 0; border-top: 1px solid rgba(12,27,42,.16); }
.calculator-inputs legend { padding: 0 10px 0 0; }
.calculator-benefit-field { margin-top: 30px; padding-top: 26px; border-top: 1px solid rgba(12,27,42,.16); }

.calculator-ledger { min-width: 0; }
.ledger-summary { display: grid; grid-template-columns: repeat(3, 1fr); background: var(--calc-blue); color: #fff; }
.ledger-summary > div { min-width: 0; padding: 22px 24px; border-right: 1px solid rgba(255,255,255,.16); }
.ledger-summary > div:last-child { border-right: 0; }
.ledger-summary span { display: block; margin-bottom: 7px; color: rgba(255,255,255,.66); font: 500 10px/1.4 var(--utility); letter-spacing: .05em; text-transform: uppercase; }
.ledger-summary strong { font: 500 clamp(24px, 3vw, 36px)/1 var(--display); font-variant-numeric: tabular-nums; }
.ledger-heading { display: grid; grid-template-columns: 1fr minmax(220px, .6fr); gap: 36px; align-items: end; margin: 54px 0 24px; }
.ledger-heading h2 { margin-bottom: 0; }
.ledger-heading > p { margin: 0; }
.ledger-table-wrap { max-width: 100%; }
.ledger-table { width: 100%; border-collapse: collapse; background: #fff; border-top: 3px solid var(--calc-brass); box-shadow: 0 18px 45px rgba(12,27,42,.07); }
.ledger-table caption { padding: 13px 16px; color: #68717a; background: var(--calc-parchment); font-size: 12px; text-align: left; caption-side: bottom; }
.ledger-table th, .ledger-table td { padding: 17px 12px; border: 1px solid #d8dee2; text-align: right; font-size: 12px; vertical-align: top; font-variant-numeric: tabular-nums; }
.ledger-table thead th { color: #fff; background: var(--calc-ink); font: 500 9px/1.45 var(--utility); letter-spacing: .035em; text-transform: uppercase; }
.ledger-table thead th:first-child, .ledger-table tbody th { text-align: left; }
.ledger-table tbody th { min-width: 104px; color: var(--calc-blue); background: var(--calc-mist); font: 500 13px/1.4 var(--utility); }
.ledger-table tbody tr:hover td { background: #fcfaf5; }
.status-cell.is-short, .status-cell.is-negative { color: var(--calc-alert); font-weight: 700; }
.status-cell.is-positive { color: #24624a; font-weight: 700; }
.calculator-noscript { margin: 18px 0 0; padding: 16px; color: var(--calc-alert); background: #f8ecec; font-size: 13px; }

.calculator-method { padding: 90px 0; background: var(--calc-mist); }
.method-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: clamp(50px, 9vw, 130px); }
.formula-list { border-top: 1px solid #bcc8cf; }
.formula-list p { display: grid; grid-template-columns: .48fr 1.52fr; gap: 28px; margin: 0; padding: 24px 0; border-bottom: 1px solid #bcc8cf; }
.formula-list strong { color: var(--calc-blue); font: 500 11px/1.5 var(--utility); text-transform: uppercase; }
.formula-list span { color: #465461; font-size: 14px; line-height: 1.7; }

.calculator-sources { padding-top: 96px; padding-bottom: 110px; }
.source-heading { display: grid; grid-template-columns: .35fr .7fr 1fr; gap: 36px; align-items: start; }
.source-heading h2 { margin-top: 0; }
.source-heading > p:last-child { margin: 0; }
.source-package-table { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 48px; border-top: 1px solid #cad1d5; border-bottom: 1px solid #cad1d5; }
.source-package-table > div { display: grid; gap: 8px; padding: 28px; border-right: 1px solid #cad1d5; }
.source-package-table > div:last-child { border-right: 0; }
.source-package-table strong { font: 600 28px/1 var(--display); }
.source-package-table span { color: var(--calc-blue); font: 500 15px/1.4 var(--utility); }
.source-package-table small { color: #66717a; }
.programme-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 28px; }
.programme-links a { display: grid; gap: 11px; min-height: 126px; padding: 23px; background: var(--calc-parchment); border: 1px solid transparent; }
.programme-links a:hover, .programme-links a:focus-visible { border-color: var(--calc-brass); }
.programme-links span { color: var(--calc-alert); font: 500 10px/1.4 var(--utility); letter-spacing: .05em; text-transform: uppercase; }
.programme-links strong { color: var(--calc-ink); font-size: 14px; line-height: 1.5; }
.calculator-final-caveat { display: grid; grid-template-columns: .38fr 1.62fr; gap: 42px; margin-top: 52px; padding: 30px 0; border-top: 2px solid var(--calc-ink); border-bottom: 1px solid #cad1d5; }
.calculator-final-caveat strong { color: var(--calc-alert); font: 500 11px/1.4 var(--utility); text-transform: uppercase; }
.calculator-final-caveat p { margin: 0; color: #4e5a64; font-size: 14px; line-height: 1.75; }

.calculator-footer .brand-dark { color: #fff; }

@media (max-width: 1000px) {
  .calculator-workspace { grid-template-columns: 1fr; }
  .calculator-inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 0 26px; }
  .calculator-panel-heading, .calculator-inputs fieldset, .calculator-benefit-field { grid-column: 1 / -1; }
  .calculator-inputs fieldset { display: grid; grid-template-columns: 1fr 1fr; gap: 0 26px; }
  .calculator-inputs fieldset legend, .calculator-inputs fieldset > p { grid-column: 1 / -1; }
  .source-heading { grid-template-columns: 1fr 1fr; }
  .source-heading > p:last-child { grid-column: 1 / -1; }
  .programme-links { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .calculator-header-inner { min-height: 104px; align-items: flex-start; flex-direction: column; justify-content: center; gap: 12px; padding-top: 15px; padding-bottom: 15px; }
  .calculator-header-inner nav { width: 100%; gap: 18px; overflow-x: auto; white-space: nowrap; }
  .calculator-hero { padding: 58px 0; }
  .calculator-hero-grid, .method-grid, .ledger-heading { grid-template-columns: 1fr; gap: 28px; }
  .calculator-hero .crumbs { margin-bottom: 34px; }
  .calculator-hero h1 { font-size: clamp(50px, 15vw, 70px); }
  .calculator-workspace { padding-top: 54px; padding-bottom: 70px; }
  .calculator-inputs, .calculator-inputs fieldset { display: block; }
  .calculator-inputs { padding: 24px 20px; }
  .ledger-summary { grid-template-columns: 1fr; }
  .ledger-summary > div { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.16); }
  .ledger-summary > div:last-child { border-bottom: 0; }
  .ledger-heading { margin-top: 46px; }
  .ledger-table thead { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
  .ledger-table, .ledger-table tbody, .ledger-table tr, .ledger-table th, .ledger-table td { display: block; width: 100%; }
  .ledger-table { background: transparent; border-top: 0; box-shadow: none; }
  .ledger-table tbody tr { margin-bottom: 20px; background: #fff; border-top: 3px solid var(--calc-brass); box-shadow: 0 12px 30px rgba(12,27,42,.07); }
  .ledger-table th, .ledger-table td { display: grid; grid-template-columns: minmax(120px, 1fr) minmax(90px, auto); gap: 18px; padding: 13px 16px; border: 0; border-bottom: 1px solid #d8dee2; text-align: right; }
  .ledger-table th::before, .ledger-table td::before { color: #65717a; content: attr(data-label); font: 500 9px/1.45 var(--utility); letter-spacing: .035em; text-align: left; text-transform: uppercase; }
  .ledger-table tbody th { min-width: 0; color: var(--calc-blue); background: var(--calc-mist); font-size: 15px; }
  .ledger-table caption { display: block; }
  .source-heading, .source-package-table, .programme-links, .calculator-final-caveat { grid-template-columns: 1fr; }
  .source-package-table > div { border-right: 0; border-bottom: 1px solid #cad1d5; }
  .source-package-table > div:last-child { border-bottom: 0; }
  .calculator-method { padding: 65px 0; }
  .formula-list p { grid-template-columns: 1fr; gap: 9px; }
  .calculator-sources { padding-top: 68px; padding-bottom: 78px; }
  .calculator-final-caveat { gap: 16px; }
}

@media (max-width: 420px) {
  .calculator-page .shell { width: min(100% - 28px, 1320px); }
  .calculator-header-inner nav { gap: 14px; font-size: 13px; }
  .calculator-hero h1 { font-size: 48px; }
  .ledger-table th, .ledger-table td { grid-template-columns: minmax(108px, 1fr) minmax(86px, auto); gap: 10px; padding-inline: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .calculator-page, .calculator-page * { animation: none !important; transition: none !important; }
}