.calculator-main { padding: 48px 0 72px; }
.calculator-main h1 { font-size: clamp(30px, 4.2vw, 48px); line-height: 1.15; letter-spacing: -0.035em; margin: 12px 0 18px; font-weight: 800; }
.calculator-main h2 { font-size: 22px; letter-spacing: -0.025em; font-weight: 700; }
.calculator-main h3 { font-size: 17px; letter-spacing: -0.02em; font-weight: 600; }
.eyebrow { font-size: 11px; letter-spacing: .1em; color: var(--muted); margin-top: 28px; text-transform: uppercase; font-weight: 700; }
.calc-intro { color: var(--muted); font-size: 16px; max-width: 680px; line-height: 1.7; }
.calc-category { margin-top: 40px; }
.calc-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.calc-card { display: block; padding: 26px; background: var(--card); border: 1px solid var(--border); border-radius: 16px; text-decoration: none; color: var(--text); box-shadow: var(--shadow); transition: all .2s cubic-bezier(0.16,1,0.3,1); }
.calc-card h3 { margin: 0; display: flex; justify-content: space-between; align-items: center; color: var(--text); }
.calc-card h3::after { content: '→'; font-size: 16px; color: var(--accent); transition: transform .2s ease; }
.calc-card p { color: var(--muted); margin-top: 8px; margin-bottom: 0; font-size: 13px; line-height: 1.6; }
.calc-card:hover { border-color: color-mix(in srgb, var(--accent) 40%, transparent); transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.calc-card:hover h3::after { transform: translateX(3px); }
.calc-layout { display: grid; grid-template-columns: 1fr 1.15fr; gap: 28px; margin: 32px 0; align-items: start; }
.calc-layout form, .calc-result { padding: 32px; border: 1px solid var(--border); background: var(--card); border-radius: 18px; min-width: 0; box-shadow: var(--shadow); }
.calc-field { display: grid; gap: 8px; margin: 18px 0; font-size: 13px; font-weight: 600; }
.calc-field input { background: var(--input); color: var(--text); border: 1px solid var(--border); border-radius: 9px; padding: 11px 14px; font: inherit; width: 100%; box-sizing: border-box; transition: border-color .15s ease, box-shadow .15s ease; }
.calc-field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-bg); }
.calculator-main :focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.calc-result { background: var(--card); border: 1px solid var(--border); position: sticky; top: 90px; }
.calc-result-label { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.calc-value { font-size: clamp(28px, 4vw, 44px); letter-spacing: -0.035em; font-weight: 800; overflow-wrap: anywhere; font-variant-numeric: tabular-nums; color: var(--accent); margin: 6px 0 16px; }
.calc-metrics { margin: 24px 0; }
.calc-metrics > div { display: flex; justify-content: space-between; gap: 20px; padding: 14px 0; border-top: 1px solid var(--border); font-size: 13px; }
.calc-metrics dt { color: var(--muted); }
.calc-metrics dd { margin: 0; font-weight: 700; text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.calc-table-wrap { overflow: auto; margin-top: 20px; border: 1px solid var(--border); border-radius: 12px; }
.calc-result summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; font-weight: 600; font-size: 13px; color: var(--accent); }
.calc-result table { width: 100%; font-size: 13px; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.calc-result td, .calc-result th { padding: 12px 14px; border-bottom: 1px solid var(--border); text-align: right; }
.calc-result th { background: var(--soft); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.calc-result th:first-child, .calc-result td:first-child { text-align: left; }
.calc-explanation { max-width: 820px; margin-top: 40px; }
.calc-explanation p { color: var(--muted); line-height: 1.8; font-size: 14px; }
#calculator-error { color: var(--bad); font-weight: 500; font-size: 13px; }
.calculator-disclaimer { padding: 24px 0; color: var(--muted); font-size: 12px; line-height: 1.6; }

@media (max-width: 700px) {
  .calc-cards, .calc-layout { grid-template-columns: 1fr; }
  .calc-layout form, .calc-result { padding: 22px; border-radius: 14px; }
  .calculator-main { padding-top: 28px; }
  .container { width: calc(100% - 32px); }
  .header-inner { gap: 12px; flex-wrap: wrap; padding: 12px 0; }
  .site-nav { gap: 14px; }
  .calc-metrics > div { flex-wrap: wrap; gap: 8px; }
  .calc-value { font-size: 34px; }
}

.calculator-chart { margin: 24px 0 12px; padding: 20px 0; border-top: 1px solid var(--border); }
.calculator-chart figcaption { font-size: 15px; font-weight: 700; margin-bottom: 16px; letter-spacing: -0.015em; }
.calculator-chart svg { width: 100%; height: auto; display: block; overflow: visible; }
.calculator-chart svg text { font: 12px Inter, sans-serif; fill: var(--muted); }
.calc-grid { stroke: var(--border); fill: none; }
.calc-series { fill: none; stroke-width: 3; vector-effect: non-scaling-stroke; }
.calc-series.series-1 { stroke: #94a3b8; stroke-dasharray: 6 4; }
.calc-series.series-2 { stroke: var(--accent); }
.calc-chart-legend { display: flex; gap: 16px; flex-wrap: wrap; font-size: 12px; margin-top: 14px; font-weight: 500; }
.calc-chart-legend span { display: flex; align-items: center; gap: 8px; }
.calc-chart-legend i { width: 20px; border-top: 3px solid var(--accent); }
.calc-chart-legend i.series-1 { border-color: #94a3b8; border-top-style: dashed; }
.calc-comparison { margin: 20px 0; }
.calc-comparison > div:first-child { display: flex; justify-content: space-between; gap: 12px; font-size: 13px; margin-bottom: 8px; font-weight: 500; }
.calc-bar-track { height: 12px; background: var(--soft); border-radius: 9999px; overflow: hidden; border: 1px solid var(--border); }
.calc-bar-fill { height: 100%; background: var(--accent); border-radius: 9999px; }
.calc-chart-note { font-size: 12px; color: var(--muted); line-height: 1.6; margin-top: 10px; }

.calc-donut-wrap { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; margin-top: 16px; }
.calc-donut-wrap svg { width: 140px; flex: none; }
.calc-donut-base, .calc-donut-slice { fill: none; stroke-width: 16; }
.calc-donut-base { stroke: #94a3b8; }
.calc-donut-slice { stroke: var(--accent); }
.calc-donut-wrap svg text { font: 700 16px Inter, sans-serif; fill: var(--text); }
.calc-donut-legend { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; flex: 1; min-width: 180px; font-size: 13px; }
.calc-donut-legend li { display: flex; align-items: center; gap: 8px; }
.calc-donut-legend b { margin-left: auto; font-variant-numeric: tabular-nums; font-weight: 700; }
.calc-donut-legend i { width: 12px; height: 12px; border: 0; border-radius: 4px; background: #94a3b8; }
.calc-donut-legend i.donut-2 { background: var(--accent); }