.calc-main { max-width: 1160px; }
.calc-nav { padding-top: 28px; }
.calculator-page nav a[aria-current="page"] { background: var(--ink); border-color: var(--ink); color: #FFFFFF; }
.calc-intro { padding: 48px 0 36px; }
.calc-intro .eyebrow { margin-bottom: 12px; }
.calc-intro h1 { font-size: clamp(38px, 5vw, 58px); margin-bottom: 18px; }
.calc-intro .intro { font-size: 18px; line-height: 1.6; }
.calc-layout { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.calculator-form { padding: 32px; }
.calculator-form h2 { color: var(--ink); font-size: 24px; margin-bottom: 28px; }
.calculator-form fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.calc-selection { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.calc-field { min-width: 0; }
.calc-field label { display: block; margin-bottom: 9px; color: var(--muted); font-size: 13px; font-weight: 500; }
.calculator-form select, .calculator-form input { width: 100%; min-height: 52px; padding: 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); color: var(--ink); font-size: 16px; }
.calculator-form input { font-size: 23px; font-weight: 500; font-variant-numeric: tabular-nums; }
.calculator-form input:focus, .calculator-form select:focus { border-color: var(--ink); }
.calculator-form input[aria-invalid="true"] { border-color: var(--ink); box-shadow: 0 0 0 1px var(--ink); }
.calculator-form :disabled { cursor: wait; opacity: .6; }
.result-input-field { margin-top: 24px; }
.calculator-form .calc-hint { margin: 10px 0 0; font-size: 12px; line-height: 1.65; }
.calculator-form .calc-error { margin: 10px 0 0; color: var(--ink); font-size: 13px; font-weight: 500; }
.calc-submit { display: flex; align-items: center; justify-content: space-between; width: 100%; min-height: 48px; margin-top: 26px; padding: 12px 20px; font-size: 15px; }
.calculator-results { display: flex; flex-direction: column; min-width: 0; padding: 32px; border-radius: 20px; background: #000000; color: #F5F5F7; }
.score-context { margin: 0 0 28px; color: #A1A1A6; font-size: 13px; }
.calculator-results h2 { color: #A1A1A6; font-size: 14px; font-weight: 400; letter-spacing: 0; }
.score-number { display: flex; align-items: baseline; gap: 10px; margin-top: 8px; }
.score-number strong { font-size: clamp(64px, 7vw, 88px); font-weight: 600; line-height: 1.1; letter-spacing: -.045em; font-variant-numeric: tabular-nums; }
.score-number span { color: #A1A1A6; font-size: 14px; }
.score-listed { margin-top: 30px; padding-top: 24px; border-top: 1px solid #333336; }
.score-listed strong { display: block; margin-top: 10px; color: #F5F5F7; font-size: clamp(28px, 3.4vw, 38px); font-weight: 500; line-height: 1.4; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.score-note { margin: 24px 0 0; color: #A1A1A6; font-size: 12px; line-height: 1.75; }
.calc-method { margin-top: 44px; padding-top: 32px; border-top: 1px solid var(--line); }
.calc-method h2 { color: var(--ink); font-size: 22px; }
.calc-rules { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 18px; }
.calc-rules p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
.calc-rules strong { color: var(--ink); font-weight: 500; }
.calc-example { margin: 24px 0 0; color: var(--muted); font-size: 12px; line-height: 1.8; font-variant-numeric: tabular-nums; }
.calc-example b { color: var(--ink); font-weight: 500; }
.calculator-page footer { margin-top: 48px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
@media (max-width: 780px) {
  .calc-layout { grid-template-columns: 1fr; }
  .calculator-results { padding: 28px; }
  .calc-rules { grid-template-columns: 1fr; gap: 18px; }
}
@media (max-width: 560px) {
  .calc-nav { padding-top: 20px; }
  .calc-intro { padding: 32px 0 28px; }
  .calc-intro .intro { font-size: 16px; }
  .calculator-form, .calculator-results { padding: 24px; border-radius: 16px; }
  .calc-selection { gap: 14px; }
  .calculator-form h2 { font-size: 22px; margin-bottom: 22px; }
  .calculator-form input { font-size: 22px; }
  .calc-method { margin-top: 32px; padding-top: 26px; }
}
@media (max-width: 420px) {
  .calc-selection { grid-template-columns: 1fr; }
}