* { box-sizing: border-box; }
body { margin: 0; font: 1rem/1.6 var(--font-body, system-ui, sans-serif); background: var(--color-background, #faf8f3); color: var(--color-text); }
a { color: var(--color-primary); text-underline-offset: .2em; }
header, footer, main { width: min(100% - 2rem, 68rem); margin-inline: auto; }
header, footer { padding-block: 1.5rem; }
header { display: flex; align-items: center; justify-content: space-between; gap: 1rem 2rem; flex-wrap: wrap; }
header > a { flex-shrink: 0; font-size: 1.15rem; text-decoration: none; }
nav { position: relative; display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
nav a { display: inline-flex; align-items: center; min-height: 44px; white-space: nowrap; }
nav a[aria-current="page"] { font-weight: 700; }
.calculator-navigation { display: flex; align-items: center; }
.calculator-dropdown summary { display: grid; place-items: center; width: 44px; min-height: 44px; cursor: pointer; list-style: none; color: var(--color-primary); border-radius: var(--radius-control); }
.calculator-dropdown summary::-webkit-details-marker { display: none; }
.calculator-links { position: absolute; inset-inline-end: 0; top: 100%; z-index: 20; width: 18rem; max-width: min(100%, calc(100vw - 2rem)); max-height: 70vh; overflow-y: auto; list-style: none; margin: 0; padding: var(--space-2); border: 1px solid var(--color-border); border-radius: var(--radius-control); background: var(--color-surface); box-shadow: 0 4px 12px #20282020; }
.calculator-links a { display: flex; padding: var(--space-2) var(--space-3); white-space: normal; border-radius: var(--radius-control); }
.calculator-links a:hover, .calculator-links a:focus-visible { background: var(--color-background); }
main { padding-block: 1rem; overflow-wrap: anywhere; }
h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); line-height: 1.2; }
h2 { line-height: 1.3; }
p { max-width: 70ch; }
.calculator { display: grid; gap: 2rem; padding: 1.25rem; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-panel); }
.calculator > * { min-width: 0; }
label { display: block; font-weight: 650; margin-top: 1rem; }
input, select, button { font: inherit; max-width: 100%; min-height: 44px; border: 1px solid var(--color-border); border-radius: var(--radius-control); padding: .5rem .75rem; }
input, select { width: 100%; background: var(--color-surface); color: var(--color-text); }
button { background: var(--color-primary); color: var(--color-on-primary); cursor: pointer; margin: .5rem .5rem 0 0; }
button.secondary { background: var(--color-surface); color: var(--color-primary); }
:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 3px; }
.error { color: var(--color-error); }
.error:empty { display: none; }
.error-summary { border: 2px solid var(--color-error); padding: 1rem; }
.headline { font-size: clamp(1.8rem, 7vw, 3rem); font-weight: 750; overflow-wrap: anywhere; margin-block: .5rem; }
table { width: 100%; border-collapse: collapse; }
caption { text-align: left; font-weight: 650; }
th, td { text-align: left; padding: .6rem .25rem; border-bottom: 1px solid var(--color-border); overflow-wrap: anywhere; }
td { text-align: right; min-width: 11ch; font-variant-numeric: tabular-nums; }
.notice { border-left: 3px solid var(--color-primary); padding-left: .75rem; }
.sr-only, .skip-link:not(:focus) { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
@media (min-width: 48rem) {
    .calculator { grid-template-columns: minmax(0, 22rem) minmax(0, 1fr); gap: 2rem; max-width: 60rem; line-height: 1.45; }
    .calculator .field-label { margin-top: .5rem; }
    .calculator form > .field-label:first-of-type { margin-top: 0; }
    .calculator form > p { margin-block: .5rem; }
    .calculator .result-label h2 { margin-block: .5rem; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto; } }

.field-label, .result-label { position: relative; display: flex; align-items: center; gap: var(--space-2); }
.field-label { margin-top: var(--space-4); }
.field-label label { margin-top: 0; }
.help-tooltip { display: inline-flex; align-items: center; gap: var(--space-2); max-width: 100%; font: inherit; }
.help-trigger { flex-shrink: 0; font-size: 1rem; margin: 0; padding: 0; width: 44px; height: 44px; min-height: 44px; border: 0; background: transparent; color: var(--color-primary); font-weight: 700; }
.help-icon { display: inline-grid; place-items: center; width: 1.5rem; height: 1.5rem; border: 1px solid var(--color-border); border-radius: 50%; }
.help-popup { position: absolute; inset-inline-start: 0; top: 100%; z-index: 10; box-sizing: border-box; width: min(22rem, 100%); max-width: calc(100vw - 2rem); padding: var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-control); background: var(--color-surface); color: var(--color-text); box-shadow: 0 4px 12px #20282020; font: 400 1rem/1.5 var(--font-body); text-align: left; overflow-wrap: anywhere; }

.help-caption { min-width: 0; overflow-wrap: anywhere; }
@media (max-width: 30rem) {
    table tr { display: block; }
    table th, table td { display: block; width: 100%; min-width: 0; text-align: left; }
    table th { border-bottom: 0; padding-bottom: 0; }
    table td { padding-top: 0; }
}

.help-disclosure { display: inline-block; flex-shrink: 0; }
.result-label h2 { min-width: 0; overflow-wrap: anywhere; }
.help-trigger { display: grid; place-items: center; list-style: none; cursor: pointer; border-radius: var(--radius-control); }
.help-trigger::-webkit-details-marker { display: none; }
button:disabled { cursor: wait; opacity: .7; }
.privacy-note { font-size: .9rem; }
.submission-status { min-height: 1.6em; }
.projection-chart { display: block; width: 100%; min-height: 12rem; border: 1px solid var(--color-border); background: var(--color-background); }
.projection-chart polyline { fill: none; stroke-width: 4; vector-effect: non-scaling-stroke; }
.chart-nominal { stroke: var(--color-primary); }
.chart-real { stroke: var(--color-focus); stroke-dasharray: 8 6; }
.table-scroll { max-width: 100%; overflow-x: auto; }
.table-scroll:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; }
.table-scroll table { min-width: 48rem; }
.table-scroll th, .table-scroll td { white-space: nowrap; overflow-wrap: normal; }

.calculator-disclaimer { max-width: 60rem; margin-block: .75rem 1.5rem; font-size: .875rem; color: var(--color-text-muted); }