.calculators-hero { padding-block: clamp(3rem, 6vw, 6rem); border-bottom: 1px solid var(--color-border); background: radial-gradient(ellipse at 80% 50%, #18331e, var(--color-bg) 65%); }
.calculators-hero h1 { max-width: 16ch; }
.calculators-hero p:not(.t-eyebrow) { max-width: 65ch; color: var(--color-muted); }
.calculators-nav { display: flex; gap: var(--space-3); overflow-x: auto; padding-block: var(--space-5); white-space: nowrap; scrollbar-width: thin; }
.calculators-nav a { flex: 0 0 auto; padding: .65rem .9rem; border: 1px solid var(--color-border); border-radius: 999px; color: var(--color-text); font-size: .875rem; text-decoration: none; }
.calculators-nav a:hover, .calculators-nav a:focus-visible { border-color: var(--color-green); color: var(--color-green); }
.calculator-section { border-top: 1px solid var(--color-border); scroll-margin-top: 2rem; }
.calculator-section:nth-of-type(even) { background: var(--color-bg-alt); }
.calculator-section__layout { display: grid; grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr); gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.calculator-section__intro { position: sticky; top: var(--space-5); }
.calculator-section__intro h2 { max-width: 16ch; }
.calculator-section__intro > p:not(.t-eyebrow) { max-width: 45ch; color: var(--color-muted); }
.calculator-method { margin-top: var(--space-5); color: var(--color-muted); font-size: .875rem; }
.calculator-method summary { color: var(--color-green); cursor: pointer; font-weight: 700; }
.calculator-method p { line-height: 1.7; }
.calculator-panel { min-width: 0; padding: clamp(1.25rem, 3vw, 2rem); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-card); }
.calculator-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .25rem var(--space-5); }
.calculator-unit { color: var(--color-muted); font-size: .8rem; font-weight: 400; }
.calculator-fields .form-help { display: block; margin-top: .3rem; }
.calculator-form > button { margin-top: var(--space-3); }
.calculator-error { padding: var(--space-3); border: 1px solid #a5473f; border-radius: var(--radius-sm); color: #ffb4ac; }
.calculator-error[hidden], .calculator-output[hidden] { display: none; }
.calculator-output { margin-top: var(--space-6); padding-top: var(--space-5); border-top: 1px solid var(--color-border); }
.calculator-output dl { display: grid; gap: 0; margin: var(--space-4) 0; }
.calculator-output dl > div { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-4); padding-block: var(--space-3); border-bottom: 1px solid var(--color-border); }
.calculator-output dt { color: var(--color-muted); }
.calculator-output dd { margin: 0; color: var(--color-text); font-size: clamp(1rem, 2vw, 1.25rem); font-weight: 700; text-align: right; }
.calculator-output__note { color: var(--color-green); font-weight: 600; }
.calculator-output small { display: block; color: var(--color-muted); }
.calculators-final { padding-block: var(--space-8); }
.calculators-final p { max-width: 75ch; color: var(--color-muted); }
@media (max-width: 900px) { .calculator-section__layout { grid-template-columns: 1fr; } .calculator-section__intro { position: static; } }
@media (max-width: 600px) { .calculator-fields { grid-template-columns: 1fr; } .calculator-output dl > div { flex-direction: column; gap: .15rem; } .calculator-output dd { text-align: left; } }