.calculator-hero { padding: clamp(32px, 5vw, 64px) 0 32px; }
.calculator-hero, .calc-layout, .calculator-info { --muted: #6b6b65; }
.calculator-hero h1 { max-width: 19ch; font-size: clamp(2.4rem, 5.2vw, 4.2rem); }
.calculator-hero .intro { max-width: 42em; }
.calculator-hero .fine { margin-top: 18px; }
.calc-layout { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 28px; align-items: start; padding-bottom: 64px; }
.calc-input, .calc-result, .calc-forecast { padding: 28px; border: 1px solid var(--line-2); border-radius: 20px; background: var(--surface); }
.calc-input h2, .calc-forecast h2 { font-size: 1.4rem; }
.calc-input-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 12px; }
.calc-text-button { text-decoration: underline; text-decoration-color: var(--line-2); text-underline-offset: 4px; font-size: .875rem; color: var(--ink-2); }
.calc-mode { display: flex; gap: 4px; margin: 24px 0 0; padding: 4px; border: 1px solid var(--line); border-radius: 12px; background: var(--soft); }
.calc-mode label { position: relative; flex: 1; cursor: pointer; }
.calc-mode input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; margin: 0; cursor: pointer; }
.calc-mode span { display: block; padding: 10px 8px; border-radius: 9px; text-align: center; font-size: .9375rem; font-weight: 600; }
.calc-mode input:checked + span { background: var(--ink); color: #fff; }
.calc-mode input:focus-visible + span { outline: 2px solid var(--ink); outline-offset: 2px; }
.calc-mode-help { margin-top: 12px; min-height: 3em; font-size: .875rem; color: var(--ink-2); }
.calc-inline-result { margin-top: 14px; padding: 10px 14px; border-radius: 8px; color: #155f3a; background: #e8f3ec; font-weight: 600; }
.course-list { display: grid; gap: 16px; margin-top: 22px; }
.course-row { padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); }
.course-title { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.course-title h3 { font-size: .875rem; }
.calc-remove { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 8px; color: var(--muted); }
.calc-remove:hover { background: #f9e9e7; color: var(--red); }
.calc-remove svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.course-fields { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, .7fr); gap: 10px; }
.calc-layout label:not(.calc-mode label):not(.course-include) { display: grid; gap: 6px; min-width: 0; font-size: .8125rem; font-weight: 600; }
.calc-layout label small { color: var(--muted); font-weight: 400; }
.calc-layout input[type="text"], .calc-layout select { width: 100%; min-width: 0; height: 46px; padding: 0 11px; border: 1px solid var(--line-2); border-radius: 8px; background: var(--surface); font-size: .9375rem; font-weight: 400; }
.calc-layout input:disabled, .calc-layout select:disabled { color: var(--muted); background: var(--soft); }
.calc-layout [aria-invalid="true"] { border-color: var(--red) !important; }
.course-include { display: flex; align-items: center; gap: 8px; margin-top: 14px; font-size: .8125rem; color: var(--ink-2); }
.course-include input { width: 18px; height: 18px; margin: 0; accent-color: var(--ink); }
.course-row.is-excluded .course-title h3 { color: var(--muted); }
.course-error, .forecast-error { margin-top: 12px; font-size: .8125rem; color: var(--red); }
.calc-row-actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; margin-top: 22px; }
.calc-row-actions .btn { flex: 1; }
.calc-input .small { margin-top: 18px; }
.calc-sidebar { position: sticky; top: 24px; display: grid; gap: 20px; }
.calc-result { border-color: #c9dccf; background: #f2f8f3; }
.calc-result-kind { font-size: .875rem; color: #326345; }
.calc-result h2 { margin-top: 8px; font-size: 1rem; font-weight: 500; color: var(--ink-2); letter-spacing: 0; }
.calc-number { display: block; margin-top: 10px; font-size: 1.8rem; line-height: 1.2; font-weight: 640; letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.calc-result.is-ready .calc-number { font-size: clamp(3.8rem, 5vw, 5rem); }
.calc-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 24px; padding-top: 20px; border-top: 1px solid #d3e2d6; }
.calc-stats dt { font-size: .8125rem; color: var(--ink-2); }
.calc-stats dd { margin: 4px 0 0; font-size: 1.5rem; line-height: 1.3; font-weight: 600; font-variant-numeric: tabular-nums; }
.calc-result-status { margin-top: 20px; font-size: .875rem; color: var(--ink-2); }
.calc-result .small { margin-top: 12px; }
.calc-result details { margin-top: 18px; border-bottom: 0; border-top: 1px solid #d3e2d6; }
.calc-result summary { font-size: .875rem; padding-block: 14px; }
.calc-result details p { font-size: .875rem; overflow-wrap: anywhere; padding-bottom: 0; }
.calc-copy { display: inline-flex; align-items: center; gap: 7px; margin-top: 20px; font-size: .875rem; font-weight: 600; }
.calc-copy:disabled { opacity: .5; cursor: default; }
.calc-copy svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.calc-copy-status { font-size: .8125rem; overflow-wrap: anywhere; }
.calc-forecast > p { margin-top: 10px; color: var(--ink-2); font-size: .875rem; }
.forecast-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 12px; min-width: 0; margin: 20px 0 0; padding: 0; border: 0; }
.forecast-target { grid-column: 1 / -1; }
.forecast-fields:disabled { opacity: .55; }
.forecast-result { margin-top: 20px; padding: 18px; border-radius: 12px; background: var(--soft); }
.forecast-result .small { margin-top: 6px; }
.forecast-average { display: block; margin-top: 4px; font-size: 2rem; line-height: 1.25; font-weight: 630; font-variant-numeric: tabular-nums; }
.forecast-target-result { margin-top: 14px; font-size: .875rem; }
.calculator-info { max-width: 760px; padding: 0 0 80px; }
.calculator-info h2 { margin-top: 48px; font-size: clamp(1.5rem, 2.6vw, 2rem); }
.calculator-info p { margin-top: 14px; color: var(--ink-2); }
.calculator-info .guide-toc { margin-top: 0; }
.calculator-example { margin-top: 22px; padding: 24px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.calculator-example .mono { font-size: .9375rem; }
.calculator-promo { display: grid; gap: 16px; margin-top: 48px; padding: 28px; border: 1px solid var(--line-2); border-radius: 16px; background: var(--soft); }
.calculator-promo h2 { margin: 0; }
.calculator-promo p { margin: 0; }
.calculator-promo .portal-links { margin-top: 4px; }
@media (max-width: 1000px) { .calc-layout { grid-template-columns: minmax(0, 1fr); max-width: 760px; } .calc-sidebar { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; } }
@media (max-width: 640px) {
  .calculator-hero h1 { font-size: clamp(2.3rem, 9vw, 3rem); }
  .calc-input, .calc-result, .calc-forecast { padding: 22px; border-radius: 16px; }
  .calc-sidebar { grid-template-columns: minmax(0, 1fr); }
  .course-fields { grid-template-columns: 1fr 1fr; }
  .course-name { grid-column: 1 / -1; }
  .course-row { padding: 16px; }
  .calc-remove { width: 42px; height: 42px; }
  .calc-layout input[type="text"], .calc-layout select { font-size: 1rem; }
  .calculator-info { padding-bottom: 56px; }
  .calculator-promo, .calculator-example { padding: 22px; }
}