.mtzb-calculator {
  color-scheme: light;
  --mtzb-ink: #102f46;
  --mtzb-ink-soft: #5d7485;
  --mtzb-paper: #f2f7fa;
  --mtzb-paper-deep: #e6eff5;
  --mtzb-surface: #ffffff;
  --mtzb-line: #d1e0ea;
  --mtzb-brand: #1675b8;
  --mtzb-brand-deep: #0d4f7c;
  --mtzb-brand-pale: #dceef9;
  --mtzb-blue: #2786b5;
  --mtzb-warm: #ba5735;
  --mtzb-warm-pale: #f4dfd3;
  --mtzb-yellow: #d9a83d;
  --mtzb-error: #a32620;
  --mtzb-focus: #e3a50d;
  --mtzb-radius-sm: .35rem;
  --mtzb-radius-md: .75rem;
  --mtzb-radius-lg: 1.25rem;
  --mtzb-shadow: 0 22px 65px rgba(16, 47, 70, .11);
  --mtzb-space-1: .35rem;
  --mtzb-space-2: .65rem;
  --mtzb-space-3: 1rem;
  --mtzb-space-4: 1.5rem;
  --mtzb-space-5: 2.25rem;
  --mtzb-space-6: 3.5rem;
  --mtzb-content: 76rem;
  --mtzb-reading: 46rem;
  --mtzb-font: Inter, Aptos, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mtzb-display: Georgia, "Times New Roman", serif;
  color: var(--mtzb-ink);
  font-family: var(--mtzb-font);
  line-height: 1.62;
}
.mtzb-calculator, .mtzb-calculator *, .mtzb-calculator *::before, .mtzb-calculator *::after { box-sizing: border-box; }
.mtzb-calculator h2, .mtzb-calculator h3 { margin-top: 0; color: var(--mtzb-ink); line-height: 1.08; letter-spacing: -.035em; }
.mtzb-calculator h2 { font-family: var(--mtzb-display); font-weight: 500; }
.mtzb-calculator p { margin-top: 0; }
.mtzb-calculator .mtzb-kicker, .mtzb-calculator .mtzb-eyebrow { color: var(--mtzb-brand-deep); font-size: .74rem; font-weight: 850; letter-spacing: .135em; text-transform: uppercase; }
.mtzb-calculator .mtzb-kicker { display: flex; align-items: center; gap: .7rem; }
.mtzb-calculator .mtzb-kicker span { width: 2.1rem; height: 1px; background: var(--mtzb-brand); }
.mtzb-calculator .mtzb-button { min-height: 3.15rem; display: inline-flex; align-items: center; justify-content: center; gap: 1.5rem; padding: .8rem 1.2rem; color: #fff; background: var(--mtzb-brand); border: 1px solid var(--mtzb-brand); border-radius: var(--mtzb-radius-sm); font: inherit; font-weight: 800; text-decoration: none; cursor: pointer; transition: transform .2s ease, background .2s ease; }
.mtzb-calculator .mtzb-button:hover { color: #fff; background: var(--mtzb-brand-deep); transform: translateY(-2px); }


/* Shared calculator and article components */
.mtzb-breadcrumbs { padding-top: 1rem; color: var(--mtzb-ink-soft); font-size: .9rem; }
.mtzb-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(19rem,.9fr); gap: clamp(1.2rem,4vw,3rem); align-items: start; }
.mtzb-card { padding: clamp(1.1rem,3vw,2rem); background: var(--mtzb-surface); border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-lg); box-shadow: var(--mtzb-shadow); }
.mtzb-form { display: grid; gap: 1rem; }
.mtzb-fields { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1rem; }
.mtzb-field { display: grid; gap: .35rem; }
.mtzb-field label { font-weight: 750; }
.mtzb-label-row { display: flex; align-items: center; gap: .4rem; }
.mtzb-info { position: relative; display: inline-grid; place-items: center; width: 1.25rem; height: 1.25rem; padding: 0; color: var(--mtzb-brand-deep); background: #e5f2fa; border: 1px solid #78aeca; border-radius: 50%; font: 800 .78rem/1 sans-serif; cursor: help; }
.mtzb-info:focus-visible { outline: 3px solid rgba(15, 118, 110, .3); outline-offset: 2px; }
.mtzb-tooltip { position: absolute; z-index: 20; left: -5.25rem; bottom: calc(100% + .65rem); width: min(19rem, 75vw); padding: .75rem .85rem; color: #fff; background: var(--mtzb-ink); border-radius: var(--mtzb-radius-sm); box-shadow: var(--mtzb-shadow); font: 500 .82rem/1.45 sans-serif; text-align: left; transform: translateY(.2rem); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .15s ease, transform .15s ease, visibility .15s ease; }
.mtzb-tooltip::after { content: ""; position: absolute; top: 100%; left: 5.85rem; border: .4rem solid transparent; border-top-color: var(--mtzb-ink); transform: translateX(-50%); }
.mtzb-info:hover .mtzb-tooltip, .mtzb-info:focus .mtzb-tooltip { opacity: 1; visibility: visible; transform: translateY(0); }
.mtzb-select { width: 100%; min-height: 2.9rem; padding: .65rem 2.2rem .65rem .8rem; color: var(--mtzb-ink); background: #fff; border: 1px solid #91a6aa; border-radius: var(--mtzb-radius-sm); font: inherit; }
.mtzb-hint { color: var(--mtzb-ink-soft); font-size: .84rem; }
.mtzb-input-wrap { display: grid; grid-template-columns: 1fr auto; align-items: stretch; }
.mtzb-input-wrap input { min-width: 0; border-radius: var(--mtzb-radius-sm) 0 0 var(--mtzb-radius-sm); }
.mtzb-unit { min-width: 3.6rem; display: grid; place-items: center; padding: 0 .65rem; color: var(--mtzb-ink-soft); background: #edf3f7; border: 1px solid var(--mtzb-line); border-left: 0; border-radius: 0 var(--mtzb-radius-sm) var(--mtzb-radius-sm) 0; font-size: .9rem; }
.mtzb-volume-helper { grid-column: 1 / -1; padding: .9rem 1rem; background: #f2f7fa; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-md); }
.mtzb-volume-helper summary { cursor: pointer; color: var(--mtzb-brand-deep); font-weight: 800; }
.mtzb-volume-helper__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; align-items: end; margin-top: 1rem; }
.mtzb-volume-helper__result { align-self: center; color: var(--mtzb-brand-deep); font-weight: 800; }
.mtzb-calculator input { width: 100%; min-height: 2.9rem; padding: .65rem .8rem; color: var(--mtzb-ink); background: #fff; border: 1px solid #91a6aa; border-radius: var(--mtzb-radius-sm); font: inherit; }
.mtzb-calculator input[aria-invalid="true"] { border-color: var(--mtzb-error); box-shadow: 0 0 0 1px var(--mtzb-error); }
.mtzb-actions { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; }
.mtzb-error { min-height: 1.2em; color: var(--mtzb-error); font-size: .88rem; }
.mtzb-result { position: sticky; top: 1rem; color: #fff; background: var(--mtzb-ink); border: 0; }
.mtzb-result h2 { color: #c6eee7; }
.mtzb-result-main { margin: 1rem 0 0; font-size: clamp(2.5rem,6vw,4.6rem); font-weight: 850; line-height: 1; font-variant-numeric: tabular-nums; }
.mtzb-result-main small { font-size: .35em; font-weight: 700; }
.mtzb-stats { display: grid; grid-template-columns: 1fr; gap: .7rem; margin: 1.5rem 0; }
.mtzb-stat { padding: .8rem; border: 1px solid rgba(255,255,255,.24); border-radius: var(--mtzb-radius-sm); }
.mtzb-stat dt { color: #b9d4d5; font-size: .78rem; }
.mtzb-stat dd { margin: .15rem 0 0; font-weight: 800; font-variant-numeric: tabular-nums; }
.mtzb-notice { padding: .85rem 1rem; color: #602914; background: var(--mtzb-warm-pale); border-left: 4px solid var(--mtzb-warm); border-radius: .2rem var(--mtzb-radius-sm) var(--mtzb-radius-sm) .2rem; }
.mtzb-result .mtzb-notice { color: #553900; background: #fff4d8; }
.mtzb-reading { max-width: var(--mtzb-reading); }
.mtzb-reading + .mtzb-reading { margin-top: 3.5rem; }
.mtzb-formula { overflow-x: auto; padding: 1rem 1.2rem; background: #e6eff5; border-radius: var(--mtzb-radius-md); font: 700 1.05rem ui-monospace, SFMono-Regular, Consolas, monospace; }
.mtzb-noscript { margin-bottom: 1rem; }
.mtzb-version { color: #b9d4d5; font-size: .78rem; }

/* Interaktívna kalkulačka CO2. */
.mtzb-calc-intro { max-width: none; margin-bottom: 2rem; }
.mtzb-calc-intro .mtzb-kicker { margin-bottom: .8rem; }
.mtzb-content-grid:has(.mtzb-calc-intro--compact) { padding-top: clamp(1.1rem, 2.2vw, 1.75rem); }
.mtzb-component .com-content-article:has(.mtzb-calc-intro--compact) .page-header { margin-bottom: .85rem; }
.mtzb-component .com-content-article:has(.mtzb-calc-intro--compact) .page-header h1,
.mtzb-component .com-content-article:has(.mtzb-calc-intro--compact) .page-header h2 { max-width: none; font-size: clamp(1.9rem, 3vw, 2.75rem); }
.mtzb-calc-intro--compact { margin-bottom: 1.25rem; }
.mtzb-calc-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(19rem, .92fr); gap: clamp(1.2rem, 4vw, 3rem); align-items: start; margin: 2rem 0 4rem; }
.mtzb-calc-card { padding: clamp(1.1rem, 3vw, 2rem); background: var(--mtzb-surface); border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-lg); box-shadow: var(--mtzb-shadow); }
.mtzb-calc-card h2 { margin-top: 0; font-size: clamp(1.7rem, 3vw, 2.35rem); }
.mtzb-calc-form { display: grid; gap: 1.2rem; }
.mtzb-calc-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.mtzb-calc-field { display: grid; align-content: start; gap: .35rem; }
.mtzb-calc-field label { font-weight: 750; }
.mtzb-label-row { display: flex; align-items: center; gap: .4rem; }
.mtzb-info { position: relative; display: inline-grid; place-items: center; width: 1.25rem; height: 1.25rem; padding: 0; color: var(--mtzb-brand-deep); background: #e5f2fa; border: 1px solid #78aeca; border-radius: 50%; font: 800 .78rem/1 sans-serif; cursor: help; }
.mtzb-info:focus-visible { outline: 3px solid rgba(22, 117, 184, .3); outline-offset: 2px; }
.mtzb-tooltip { position: absolute; z-index: 20; left: -5.25rem; bottom: calc(100% + .65rem); width: min(19rem, 75vw); padding: .75rem .85rem; color: #fff; background: var(--mtzb-ink); border-radius: var(--mtzb-radius-sm); box-shadow: var(--mtzb-shadow); font: 500 .82rem/1.45 sans-serif; text-align: left; transform: translateY(.2rem); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .15s ease, transform .15s ease, visibility .15s ease; }
.mtzb-tooltip::after { content: ""; position: absolute; top: 100%; left: 5.85rem; border: .4rem solid transparent; border-top-color: var(--mtzb-ink); transform: translateX(-50%); }
.mtzb-info:hover .mtzb-tooltip, .mtzb-info:focus .mtzb-tooltip { opacity: 1; visibility: visible; transform: translateY(0); }
.mtzb-calc-select { width: 100%; min-height: 2.9rem; padding: .65rem 2.2rem .65rem .8rem; color: var(--mtzb-ink); background: #fff; border: 1px solid #91a6aa; border-radius: var(--mtzb-radius-sm); font: inherit; }
.mtzb-calc-hint { color: var(--mtzb-ink-soft); font-size: .82rem; }
.mtzb-calc-input { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: stretch; }
.mtzb-calc-input input { width: 100%; min-width: 0; min-height: 2.9rem; padding: .65rem .8rem; color: var(--mtzb-ink); background: #fff; border: 1px solid #91a6aa; border-radius: var(--mtzb-radius-sm) 0 0 var(--mtzb-radius-sm); font: inherit; }
.mtzb-calc-input input[aria-invalid="true"] { border-color: var(--mtzb-error); box-shadow: 0 0 0 1px var(--mtzb-error); }
.mtzb-calc-unit { min-width: 3.6rem; display: grid; place-items: center; padding: 0 .65rem; color: var(--mtzb-ink-soft); background: #edf3f7; border: 1px solid var(--mtzb-line); border-left: 0; border-radius: 0 var(--mtzb-radius-sm) var(--mtzb-radius-sm) 0; font-size: .9rem; }
.mtzb-calc-volume-helper { grid-column: 1 / -1; padding: .9rem 1rem; background: #f2f7fa; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-md); }
.mtzb-calc-volume-helper summary { cursor: pointer; color: var(--mtzb-brand-deep); font-weight: 800; }
.mtzb-calc-volume-helper__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; align-items: end; margin-top: 1rem; }
.mtzb-calc-volume-helper__result { align-self: center; color: var(--mtzb-brand-deep); font-weight: 800; }
.mtzb-calc-error { min-height: 1.2em; color: var(--mtzb-error); font-size: .82rem; }
.mtzb-calc-actions { display: flex; align-items: center; flex-wrap: wrap; gap: .8rem; }
.mtzb-calc-notice { padding: .85rem 1rem; color: #602914; background: var(--mtzb-warm-pale); border-left: 4px solid var(--mtzb-warm); border-radius: .2rem var(--mtzb-radius-sm) var(--mtzb-radius-sm) .2rem; }
.mtzb-calc-result { position: sticky; top: 1rem; color: #fff; background: var(--mtzb-ink); border: 0; }
.mtzb-calc-result h2 { color: #cfeeff; }
.mtzb-calc-result .mtzb-kicker { color: #8fd2ee; }
.mtzb-calc-result__main { margin: 1rem 0 0; font-size: clamp(2.5rem, 6vw, 4.6rem); font-weight: 850; line-height: 1; font-variant-numeric: tabular-nums; }
.mtzb-calc-result__main small { font-size: .35em; font-weight: 700; }
.mtzb-calc-stats { display: grid; grid-template-columns: 1fr; gap: .7rem; margin: 1.5rem 0; }
.mtzb-calc-stat { padding: .8rem; border: 1px solid rgba(255,255,255,.24); border-radius: var(--mtzb-radius-sm); }
.mtzb-calc-stat dt { color: #bad2df; font-size: .76rem; }
.mtzb-calc-stat dd { margin: .15rem 0 0; font-weight: 800; font-variant-numeric: tabular-nums; }
.mtzb-calc-stat__label { display: block; color: #bad2df; font-size: .76rem; }
.mtzb-calc-stat > span:last-child,
.mtzb-calc-stat > strong { display: block; margin-top: .15rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.mtzb-calc-result .mtzb-calc-notice { color: #553900; background: #fff4d8; }
.mtzb-calc-version { color: #bad2df; font-size: .76rem; }
.mtzb-calc-reading { max-width: none; }
.mtzb-calc-reading + .mtzb-calc-reading { margin-top: 3.25rem; }
.mtzb-calc-reading h2 { font-size: clamp(1.7rem, 3vw, 2.35rem); }
.mtzb-calc-formula { overflow-x: auto; padding: 1rem 1.2rem; background: #e6eff5; border-radius: var(--mtzb-radius-md); font: 700 1rem ui-monospace, SFMono-Regular, Consolas, monospace; }

/* Standalone heat-recovery calculator */
.mtzb-recovery-hero { padding: 2rem 0 1.2rem; }
.mtzb-recovery-hero .mtzb-shell { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.mtzb-recovery-hero h1 { max-width: 18ch; margin: 0; color: var(--mtzb-brand-deep); font-size: clamp(2.25rem, 4vw, 3.6rem); line-height: 1.02; }
.mtzb-recovery-benefits { display: flex; gap: 1rem; color: var(--mtzb-brand); font-size: .88rem; }
.mtzb-recovery-benefits span { max-width: 10rem; padding: .7rem 1rem; border-left: 1px solid var(--mtzb-line); }
.mtzb-recovery-section { padding-top: 1rem; }
.mtzb-recovery-form { padding: 1.25rem; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-lg); background: rgba(255,255,255,.7); box-shadow: 0 22px 60px rgba(13,41,48,.09); }
.mtzb-recovery-schema { display: grid; grid-template-columns: minmax(0,1fr); gap: 1.5rem; align-items: stretch; }
.mtzb-recovery-schema h2 { margin-bottom: 1rem; font-size: 1.35rem; color: var(--mtzb-brand-deep); }
.mtzb-recovery-inputs, .mtzb-recovery-outputs, .mtzb-recovery-machine { min-width: 0; }
.mtzb-recovery-outputs { display: grid; grid-template-columns: 1fr 1fr; align-content: start; gap: 0; }
.mtzb-output-heading { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.mtzb-output-heading button { padding: .35rem .55rem; border: 1px solid var(--mtzb-line); border-radius: 999px; background: #fff; color: var(--mtzb-brand-deep); font: inherit; font-size: .68rem; cursor: pointer; }
.mtzb-recovery-outputs > .mtzb-air-card { min-width: 0; padding: .8rem; border-radius: 0; }
.mtzb-recovery-outputs > .mtzb-air-card:first-of-type { border-radius: var(--mtzb-radius-md) 0 0 var(--mtzb-radius-md); }
.mtzb-recovery-outputs > .mtzb-air-card:last-of-type { border-left: 0; border-radius: 0 var(--mtzb-radius-md) var(--mtzb-radius-md) 0; }
.mtzb-recovery-outputs > .mtzb-air-card + .mtzb-air-card { margin-top: 0; }
.mtzb-recovery-outputs .mtzb-air-card dl { grid-template-columns: 1fr; }
.mtzb-recovery-outputs .mtzb-air-card dl div { padding: .5rem; }
.mtzb-recovery-outputs .mtzb-air-card dd { font-size: .88rem; }
.mtzb-air-card { padding: 1rem; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-md); background: #fff; }
.mtzb-air-card + .mtzb-air-card { margin-top: 1rem; }
.mtzb-air-card h3 { margin-bottom: .9rem; font-size: 1rem; }
.mtzb-air-card--cold { color: #1b6686; background: #e6f3fa; border-color: #add2e3; }
.mtzb-air-card--warm, .mtzb-air-card--exhaust { color: #9b4723; background: #fff0e7; border-color: #e5aa8d; }
.mtzb-air-card--supply { color: #174f68; background: #dff2fa; border-color: #8fc8df; }
.mtzb-air-inputs-combined { display: grid; grid-template-columns: 1fr 1fr; overflow: hidden; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-md); background: #fff; }
.mtzb-air-input-state { padding: .85rem; }
.mtzb-air-input-state + .mtzb-air-input-state { border-left: 1px solid rgba(13,41,48,.12); }
.mtzb-air-input-state h3 { margin: 0 0 .65rem; font-size: .9rem; }
.mtzb-air-input-state--cold { color: #1b6686; background: #c4e3f1; }
.mtzb-air-input-state--warm { color: #5f427e; background: #f1eafb; }
.mtzb-season-icon--summer { display: none; }
.mtzb-recovery-form.is-summer .mtzb-season-icon--winter { display: none; }
.mtzb-recovery-form.is-summer .mtzb-season-icon--summer { display: inline; }
.mtzb-air-input-state .mtzb-compact-fields label { display: block; }
.mtzb-air-input-state .mtzb-compact-fields label span { margin-top: .25rem; }
.mtzb-air-input-state .mtzb-compact-fields input { width: 100%; min-width: 0; }
.mtzb-airflow-link { grid-column: 1 / -1; display: flex; align-items: center; gap: .45rem; padding: .65rem .85rem; border-top: 1px solid var(--mtzb-line); background: #f7faf9; color: var(--mtzb-ink-soft); font-size: .7rem; cursor: pointer; }
.mtzb-airflow-link input { flex: 0 0 1rem; width: 1rem; min-height: 1rem; margin: 0; padding: 0; accent-color: var(--mtzb-brand); }
.mtzb-airflow-limit { grid-column: 1 / -1; margin: 0; padding: .55rem .85rem .65rem; color: #496267; background: #f7faf9; border-top: 1px solid rgba(13,41,48,.08); font-size: .68rem; line-height: 1.4; }
.mtzb-compact-fields { display: grid; gap: .48rem; }
.mtzb-compact-fields label { display: flex; align-items: center; justify-content: space-between; gap: .6rem; font-size: .82rem; }
.mtzb-compact-fields label span { display: flex; align-items: center; gap: .3rem; white-space: nowrap; }
.mtzb-compact-fields input, .mtzb-recovery-efficiencies input { width: 5.4rem; min-height: 2.35rem; padding: .35rem .5rem; border: 1px solid var(--mtzb-line); border-radius: .4rem; background: #fff; font: inherit; font-weight: 700; }
.mtzb-air-card dl { display: grid; grid-template-columns: 1fr 1fr; gap: .55rem; margin: 0; }
.mtzb-air-card dl div { padding: .65rem; border-radius: .45rem; background: rgba(255,255,255,.78); }
.mtzb-air-card dt { font-size: .72rem; color: var(--mtzb-ink-soft); }
.mtzb-air-card dd { margin: .12rem 0 0; color: var(--mtzb-brand-deep); font-weight: 800; font-variant-numeric: tabular-nums; }
.mtzb-air-card > p { margin: .8rem 0 0; padding-top: .7rem; border-top: 1px solid currentColor; font-size: .8rem; }
.mtzb-air-card > p strong { float: right; }
.mtzb-recovery-machine { position: relative; display: grid; grid-template-columns: minmax(9rem,.75fr) minmax(14rem,1.2fr) minmax(9rem,.75fr); gap: .75rem; align-items: center; padding: 4.9rem 1rem 4.7rem; overflow: hidden; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-lg); background: #fff; }
.mtzb-recovery-machine > h2 { position: absolute; top: 1rem; left: 1rem; z-index: 2; }
.mtzb-duct { position: absolute; left: 1rem; right: 1rem; height: 2.9rem; display: flex; align-items: center; justify-content: space-between; padding: 0 1rem; border-radius: 999px; color: #fff; font-size: .78rem; font-weight: 750; box-shadow: inset 0 0 0 2px rgba(255,255,255,.25); }
.mtzb-duct i { font-size: 1.65rem; font-style: normal; }
.mtzb-duct--supply { top: 4.4rem; background: linear-gradient(90deg,#2189ba,#25a9c0,#2aa993); }
.mtzb-duct--extract { bottom: 1rem; background: linear-gradient(90deg,#d36a37,#e28b53,#c65a31); }
.mtzb-flow-port { position: absolute; z-index: 3; display: flex; align-items: center; gap: .45rem; width: min(12.5rem,42%); padding: .5rem .7rem; border: 1px solid rgba(255,255,255,.72); border-radius: .7rem; color: #fff; box-shadow: 0 5px 15px rgba(13,41,48,.12); font-size: .72rem; font-weight: 800; }
.mtzb-flow-port span { min-width: 0; }
.mtzb-flow-port b { display: block; margin-top: .08rem; color: inherit; font-size: .63rem; font-weight: 650; white-space: nowrap; }
.mtzb-flow-port i { margin-left: auto; font-size: 1.25rem; font-style: normal; }
.mtzb-flow-port--outdoor { top: 3.6rem; left: 1rem; color: #1b6686; background: #c4e3f1; border-color: #add2e3; }
.mtzb-flow-port--supply { right: 1rem; bottom: .8rem; color: #174f68; background: #dff2fa; border-color: #8fc8df; }
.mtzb-flow-port--extract { left: 1rem; bottom: .8rem; color: #5f427e; background: #f1eafb; border-color: #d5c6e7; }
.mtzb-flow-port--exhaust { top: 3.6rem; right: 1rem; color: #9b4723; background: #fff0e7; border-color: #e5aa8d; }
.mtzb-flow-port--supply i, .mtzb-flow-port--exhaust i { margin: 0 auto 0 0; }
.mtzb-stage, .mtzb-recovery-core { position: relative; z-index: 1; padding: .85rem; border: 1px solid #b8c4c5; border-radius: var(--mtzb-radius-md); background: rgba(255,255,255,.94); box-shadow: 0 10px 26px rgba(13,41,48,.1); }
.mtzb-stage { align-self: start; margin-top: 2.5rem; }
.mtzb-stage:hover, .mtzb-stage:focus-within { z-index: 5; }
.mtzb-stage[data-stage="reheat"] { align-self: end; margin-top: 0; margin-bottom: 2.5rem; }
.mtzb-stage.is-active { z-index: 5; border-color: var(--mtzb-brand); box-shadow: 0 0 0 2px rgba(22,117,184,.11),0 10px 26px rgba(16,47,70,.1); }
.mtzb-stage h3, .mtzb-recovery-core h3 { margin: 0; color: var(--mtzb-brand-deep); font-size: 1rem; }
.mtzb-stage-head { display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.mtzb-stage > p { margin: .75rem 0 0; color: var(--mtzb-ink-soft); font-size: .78rem; }
.mtzb-stage > p strong { display: block; margin-top: .1rem; color: var(--mtzb-brand-deep); font-size: 1.1rem; }
.mtzb-stage > p span { display: block; margin-top: .3rem; color: #496267; font-size: .76rem; font-weight: 650; line-height: 1.35; }
.mtzb-stage > p span b { color: #174d55; font-weight: 800; }
.mtzb-switch { display: grid; grid-template-columns: auto; justify-items: center; gap: .12rem; cursor: pointer; }
.mtzb-switch input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.mtzb-switch span { width: 2.6rem; height: 1.4rem; padding: .18rem; border-radius: 99px; background: #c9d0ce; transition: .2s; }
.mtzb-switch span::after { content: ''; display: block; width: 1.04rem; height: 1.04rem; border-radius: 50%; background: #fff; transition: .2s; }
.mtzb-switch input:checked + span { background: var(--mtzb-brand); }
.mtzb-switch input:checked + span::after { transform: translateX(1.2rem); }
.mtzb-switch b { color: var(--mtzb-ink-soft); font-size: .62rem; }
.mtzb-stage .mtzb-field { margin-top: .75rem; }
.mtzb-stage .mtzb-field label { font-size: .72rem; }
.mtzb-stage .mtzb-inline-help { display: flex; align-items: center; gap: .3rem; }
.mtzb-stage .mtzb-inline-help .mtzb-info { flex: 0 0 1.05rem; width: 1.05rem; height: 1.05rem; min-height: 1.05rem; font-size: .66rem; }
.mtzb-recovery-core { min-height: 18.5rem; border: 0; background: transparent; box-shadow: none; }
.mtzb-core-symbol { position: absolute; top: 50%; left: 50%; width: 11.5rem; height: 11.5rem; display: grid; place-items: center; transform: translate(-50%,-50%) rotate(45deg); border: 3px solid var(--mtzb-brand-deep); background: repeating-linear-gradient(90deg,#f7faf8 0 4px,#dce4e0 4px 5px); box-shadow: 0 10px 25px rgba(13,41,48,.18); }
.mtzb-core-controls { width: 9.2rem; transform: rotate(-45deg); text-align: left; }
.mtzb-core-controls h3 { margin: 0 0 .4rem; text-align: center; font-size: .88rem; }
.mtzb-core-controls > label { display: block; margin-top: .35rem; color: var(--mtzb-ink-soft); font-size: .65rem; font-weight: 700; }
.mtzb-core-controls .mtzb-select { display: block; width: 67%; min-height: 2rem; margin: .15rem auto 0; padding: .25rem 1.5rem .25rem .4rem; font-size: .7rem; }
.mtzb-core-controls label > span { display: grid; width: 67%; grid-template-columns: 1fr auto; align-items: center; gap: .25rem; margin: .15rem auto 0; }
.mtzb-core-controls input { width: 100%; min-height: 2rem; padding: .25rem .4rem; border: 1px solid var(--mtzb-line); border-radius: .35rem; font-size: .72rem; font-weight: 800; }
.mtzb-core-controls .mtzb-error { font-size: .58rem; line-height: 1.1; }
.mtzb-recovery-efficiencies { display: grid; grid-template-columns: 1fr; gap: .55rem; margin-top: .75rem; }
.mtzb-recovery-efficiencies label { display: flex; justify-content: space-between; gap: .5rem; color: var(--mtzb-ink-soft); font-size: .75rem; }
.mtzb-recovery-efficiencies label span { white-space: nowrap; }
.mtzb-recovered-power { margin-top: .8rem; padding-top: .75rem; border-top: 1px solid var(--mtzb-line); text-align: center; }
.mtzb-recovered-power span { display: block; color: var(--mtzb-ink-soft); font-size: .75rem; }
.mtzb-recovered-power strong { display: block; color: var(--mtzb-brand); font-size: 1.8rem; }
.mtzb-recovery-stage-results { position: absolute; left: 1rem; right: 1rem; top: 7.7rem; display: flex; justify-content: center; gap: 1rem; color: var(--mtzb-ink-soft); font-size: .7rem; pointer-events: none; }
.mtzb-recovery-stage-results strong { color: var(--mtzb-brand-deep); }
.mtzb-recovery-summary { display: grid; grid-template-columns: repeat(5,1fr) auto; gap: 0; margin-top: 1rem; overflow: hidden; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-md); background: #fff; }
.mtzb-recovery-summary:hover, .mtzb-recovery-summary:focus-within { position: relative; z-index: 10; overflow: visible; }
.mtzb-recovery-summary > div { padding: .9rem 1rem; border-right: 1px solid var(--mtzb-line); }
.mtzb-recovery-summary span { display: block; color: var(--mtzb-ink-soft); font-size: .75rem; }
.mtzb-recovery-summary .mtzb-tooltip { z-index: 30; color: #fff; font-size: .82rem; font-weight: 500; line-height: 1.45; }
.mtzb-recovery-summary strong { display: block; margin-top: .15rem; color: var(--mtzb-brand-deep); font-size: 1.2rem; }
.mtzb-recovery-summary .mtzb-button { margin: .65rem; white-space: nowrap; }
.mtzb-recovery-form > .mtzb-notice { margin-top: 1rem; }
.mtzb-season-picker { display: grid; grid-template-columns: auto auto 1fr; align-items: center; gap: .45rem; margin-bottom: 1rem; padding: .5rem; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-md); background: #fff; }
.mtzb-season-picker button { min-height: 2.5rem; padding: .55rem .9rem; border: 1px solid var(--mtzb-line); border-radius: .55rem; background: #f4f7f6; color: var(--mtzb-brand-deep); font: inherit; font-size: .82rem; font-weight: 750; cursor: pointer; }
.mtzb-season-picker button.is-active { border-color: #4aa1c5; background: #e6f3fa; box-shadow: inset 0 0 0 1px #4aa1c5; }
.mtzb-season-picker small { margin-left: .35rem; color: var(--mtzb-ink-soft); font-size: .72rem; }
.mtzb-recovery-form.is-summer .mtzb-recovery-machine { background: #fff; }
.mtzb-recovery-form.is-summer .mtzb-season-picker button.is-active { border-color: #de9143; background: #fff1d5; box-shadow: inset 0 0 0 1px #de9143; }
.mtzb-recovery-form.is-summer .mtzb-flow-port--outdoor { color: #93433c; background: #fde5e2; border-color: #e8b1aa; }
.mtzb-duct b { display: block; margin-top: .08rem; color: inherit; font-size: .65rem; font-weight: 650; }
.mtzb-frost-label { display: flex !important; align-items: center; gap: .3rem; }
.mtzb-frost-label .mtzb-info, .mtzb-air-card > p .mtzb-info { width: 1.05rem; height: 1.05rem; min-height: 1.05rem; font-size: .68rem; vertical-align: middle; }
.mtzb-air-card > p > span { display: inline-flex; align-items: center; gap: .3rem; }
.is-warning { color: #c34c22 !important; }
[hidden] { display: none !important; }

/* Winter and summer calculations shown together. */
.mtzb-seasonal-input-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); overflow: hidden; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-md); background: #fff; }
.mtzb-seasonal-input-grid .mtzb-air-input-state { min-width: 0; }
.mtzb-seasonal-input-grid .mtzb-air-input-state + .mtzb-air-input-state { border-left: 1px solid rgba(13,41,48,.12); }
.mtzb-air-input-state--summer { color: #93433c; background: #fde5e2; }
.mtzb-air-input-state--summer-room { color: #77502e; background: #fff1dd; }
.mtzb-season-airflow-settings { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; margin-top: .6rem; }
.mtzb-season-airflow-settings .mtzb-airflow-link { grid-column: auto; border: 1px solid var(--mtzb-line); border-radius: .45rem; }
.mtzb-recovery-inputs > .mtzb-airflow-limit { margin-top: .55rem; border: 1px solid rgba(13,41,48,.08); border-radius: .45rem; }
.mtzb-recovery-schema > .mtzb-season-picker { margin: 0; }
.mtzb-recovery-outputs { grid-template-columns: repeat(4,minmax(0,1fr)); }
.mtzb-recovery-outputs > .mtzb-air-card { border-radius: 0; }
.mtzb-recovery-outputs > .mtzb-air-card:not(:first-of-type) { border-left: 0; }
.mtzb-recovery-outputs > .mtzb-air-card:first-of-type { border-radius: var(--mtzb-radius-md) 0 0 var(--mtzb-radius-md); }
.mtzb-recovery-outputs > .mtzb-air-card:last-of-type { border-radius: 0 var(--mtzb-radius-md) var(--mtzb-radius-md) 0; }
.mtzb-air-card--summer-supply { color: #77502e; background: #fff1dd; border-color: #e7bd8f; }
.mtzb-air-card--summer-exhaust { color: #93433c; background: #fde5e2; border-color: #e8b1aa; }
.mtzb-season-summaries { display: grid; gap: 1rem; margin-top: 1.2rem; }
.mtzb-season-summaries h2 { margin: 0 0 .45rem; color: var(--mtzb-brand-deep); font-size: 1rem; }
.mtzb-season-summaries .mtzb-recovery-summary { grid-template-columns: repeat(5,minmax(0,1fr)); margin-top: 0; }
.mtzb-season-summaries .mtzb-recovery-summary > div:last-child { border-right: 0; }
.mtzb-recovery-calculate { display: flex; margin: 1rem 0 0 auto; }

/* Compact technical-sketch cabinet for the recovery exchanger. */
.mtzb-recovery-machine {
  min-height: 25rem;
  grid-template-columns: minmax(8.5rem,.76fr) minmax(15rem,1.18fr) minmax(8.5rem,.76fr);
  padding: 6.7rem 1.2rem 4.45rem;
  isolation: isolate;
  overflow: visible;
  border: 2px solid #52686a;
  border-radius: .65rem;
  background-color: #f7f6f1;
  background-image:
    linear-gradient(rgba(67,88,90,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(67,88,90,.045) 1px,transparent 1px);
  background-size: 18px 18px;
  box-shadow: 0 15px 34px rgba(13,41,48,.12), inset 0 0 0 1px rgba(255,255,255,.9);
}
.mtzb-recovery-machine::before {
  position: absolute;
  z-index: -1;
  inset: .48rem;
  content: "";
  border: 1px dashed rgba(55,79,81,.42);
  border-radius: .35rem;
  pointer-events: none;
}
.mtzb-recovery-machine::after {
  display: none;
}
.mtzb-recovery-machine > h2 {
  top: .82rem;
  left: 1rem;
  margin: 0;
  padding: .22rem .55rem;
  border: 1px solid #687c7d;
  background: #fffef9;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .015em;
}
.mtzb-unit-nameplate {
  position: absolute;
  z-index: 2;
  top: 3.05rem;
  left: 1.05rem;
  margin: 0;
  color: #647779;
  font: 700 .6rem/1.2 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: .11em;
}
.mtzb-unit-schematic {
  position: absolute;
  z-index: 0;
  inset: 3.55rem .35rem 1.15rem;
  width: calc(100% - .7rem);
  height: calc(100% - 4.7rem);
  overflow: visible;
  pointer-events: none;
}
.mtzb-schematic-flow { fill: none; stroke-width: 2.2; vector-effect: non-scaling-stroke; }
.mtzb-schematic-flow--outdoor { stroke: #2c82ad; }
.mtzb-schematic-flow--supply { stroke: #319bc2; }
.mtzb-schematic-flow--extract { stroke: #725295; }
.mtzb-schematic-flow--exhaust { stroke: #c96932; }
.mtzb-schematic-filter rect,
.mtzb-schematic-filter path,
.mtzb-schematic-coil rect,
.mtzb-schematic-coil path { fill: rgba(255,254,249,.86); stroke: #607778; stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.mtzb-schematic-filter path,
.mtzb-schematic-coil path { fill: none; }
.mtzb-schematic-fan circle { fill: rgba(255,254,249,.78); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.mtzb-schematic-fan path { fill: none; stroke-width: 1.4; vector-effect: non-scaling-stroke; }
.mtzb-schematic-fan--blue circle,
.mtzb-schematic-fan--blue path { stroke: #2c82ad; }
.mtzb-schematic-fan--orange circle,
.mtzb-schematic-fan--orange path { stroke: #c96932; }
.mtzb-schematic-exchanger { stroke: #557173; stroke-width: 1.4; vector-effect: non-scaling-stroke; }
.mtzb-schematic-core-cross { fill: none; stroke: rgba(55,88,87,.42); stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.mtzb-flow-port {
  width: min(12rem,40%);
  padding: .44rem .65rem;
  border-width: 1px;
  border-radius: .28rem;
  box-shadow: 2px 3px 0 rgba(55,79,81,.12);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: .66rem;
}
.mtzb-flow-port::before {
  position: absolute;
  top: 50%;
  width: .8rem;
  height: 1.55rem;
  content: "";
  transform: translateY(-50%);
  border: 1px solid currentColor;
  background: inherit;
}
.mtzb-flow-port--outdoor::before,
.mtzb-flow-port--extract::before { right: 100%; border-right: 0; }
.mtzb-flow-port--supply::before,
.mtzb-flow-port--exhaust::before { left: 100%; border-left: 0; }
.mtzb-flow-port--outdoor,
.mtzb-flow-port--exhaust { top: 4.35rem; }
.mtzb-flow-port--supply,
.mtzb-flow-port--extract { bottom: 1.55rem; }
.mtzb-flow-port i { font-size: 1rem; }
.mtzb-stage {
  margin-top: .6rem;
  padding: .72rem;
  border: 1px solid #7d8e8f;
  border-radius: .35rem;
  background: rgba(255,254,249,.96);
  box-shadow: 3px 4px 0 rgba(55,79,81,.1);
}
.mtzb-stage[data-stage="reheat"] { margin-bottom: .6rem; }
.mtzb-stage h3 { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .88rem; }
.mtzb-recovery-core { min-height: 13.6rem; padding: 0; }
.mtzb-core-symbol {
  width: 15.2rem;
  height: 13.6rem;
  transform: translate(-50%,-50%);
  border: 2px solid #365e5c;
  border-radius: .32rem;
  background:
    linear-gradient(45deg,transparent 49.35%,rgba(13,86,79,.28) 49.5% 50.5%,transparent 50.65%),
    linear-gradient(-45deg,transparent 49.35%,rgba(13,86,79,.28) 49.5% 50.5%,transparent 50.65%),
    repeating-linear-gradient(90deg,#f6f8f5 0 6px,#d9e2dd 6px 7px);
  box-shadow: 4px 5px 0 rgba(35,70,69,.14), inset 0 0 0 5px rgba(255,255,255,.62);
}
.mtzb-core-symbol::before,
.mtzb-core-symbol::after {
  position: absolute;
  width: .38rem;
  height: .38rem;
  content: "";
  border: 1px solid #5d7273;
  border-radius: 50%;
  background: #fffef9;
  box-shadow: 13.95rem 0 0 -1px #fffef9, 0 12.35rem 0 -1px #fffef9, 13.95rem 12.35rem 0 -1px #fffef9;
}
.mtzb-core-symbol::before { top: .4rem; left: .4rem; }
.mtzb-core-symbol::after { display: none; }
.mtzb-core-controls {
  position: relative;
  z-index: 1;
  width: 11.8rem;
  padding: .7rem .8rem;
  transform: none;
  border: 1px solid rgba(55,79,81,.45);
  border-radius: .3rem;
  background: rgba(255,254,249,.94);
  box-shadow: 0 3px 10px rgba(13,41,48,.1);
}
.mtzb-core-controls h3 {
  margin-bottom: .55rem;
  padding-bottom: .35rem;
  border-bottom: 1px solid rgba(55,79,81,.28);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: .82rem;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.mtzb-core-controls .mtzb-select,
.mtzb-core-controls label > span { width: 100%; }
.mtzb-recovery-stage-results {
  top: 5.65rem;
  padding-inline: 12rem;
  justify-content: space-between;
  color: #486063;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: .62rem;
}

/* Interactive controls placed over the approved ceiling-unit sketch. */
@media (min-width: 981px) {
  .mtzb-recovery-machine {
    min-height: clamp(35rem, 49vw, 43rem);
    display: block;
    padding: 4.5rem 1rem 1rem;
    overflow: visible;
    border: 1px solid #aebbbc;
    border-radius: .8rem;
    background: linear-gradient(180deg,#fbfaf6,#f4f5f2);
    box-shadow: 0 15px 34px rgba(13,41,48,.1);
  }
  .mtzb-recovery-machine::before { display: none; }
  .mtzb-recovery-machine > h2 {
    top: .75rem;
    left: 1rem;
    border: 0;
    background: transparent;
    font-family: var(--mtzb-display);
    font-size: 1.2rem;
    letter-spacing: 0;
  }
  .mtzb-unit-nameplate { top: 2.65rem; }
  .mtzb-unit-schematic {
    inset: 4rem .6rem .55rem;
    width: calc(100% - 1.2rem);
    height: calc(100% - 4.55rem);
    object-fit: contain;
    object-position: center;
    opacity: .96;
    filter: saturate(.9) contrast(.98);
  }
  .mtzb-flow-port {
    z-index: 4;
    width: min(11.5rem, 25%);
    height: auto;
    min-height: 0;
    padding: .42rem .58rem;
    border-radius: .45rem;
    background-clip: padding-box;
    box-shadow: 0 4px 12px rgba(13,41,48,.14);
  }
  .mtzb-flow-port::before { display: none; }
  .mtzb-flow-port--outdoor { top: 18%; left: 1.3%; }
  .mtzb-flow-port--extract { top: 18%; right: 1.3%; bottom: auto; left: auto; }
  .mtzb-flow-port--supply { right: 1.3%; bottom: 8%; }
  .mtzb-flow-port--exhaust { left: 1.3%; bottom: 8%; top: auto; right: auto; }
  .mtzb-flow-port--outdoor i,
  .mtzb-flow-port--supply i { margin: 0 0 0 auto; }
  .mtzb-flow-port--extract i,
  .mtzb-flow-port--exhaust i { margin: 0 auto 0 0; }
  .mtzb-stage,
  .mtzb-recovery-core {
    position: absolute;
    z-index: 5;
    margin: 0;
  }
  .mtzb-stage {
    width: min(11.8rem, 21%);
    padding: .52rem .58rem;
    border-color: rgba(75,104,105,.58);
    background: rgba(255,254,249,.76);
    box-shadow: 0 4px 12px rgba(13,41,48,.1);
    backdrop-filter: blur(2px);
  }
  .mtzb-stage.is-active { background: rgba(255,254,249,.88); }
  .mtzb-stage[data-stage="preheat"] { top: 29%; left: 25%; transform: translateX(-50%); }
  .mtzb-stage[data-stage="reheat"] { right: 25%; bottom: 17%; transform: translateX(50%); }
  .mtzb-stage h3 { font-size: .76rem; }
  .mtzb-stage > p { margin-top: .48rem; font-size: .68rem; }
  .mtzb-stage > p strong { font-size: .95rem; }
  .mtzb-stage > p span { margin-top: .2rem; font-size: .64rem; }
  .mtzb-stage .mtzb-field { margin-top: .5rem; }
  .mtzb-stage .mtzb-field label { font-size: .64rem; line-height: 1.25; }
  .mtzb-stage .mtzb-input-wrap input { min-height: 1.9rem; padding-block: .25rem; }
  .mtzb-stage .mtzb-unit { font-size: .68rem; }
  .mtzb-stage .mtzb-switch span { width: 2.25rem; height: 1.2rem; padding: .15rem; }
  .mtzb-stage .mtzb-switch span::after { width: .9rem; height: .9rem; }
  .mtzb-stage .mtzb-switch input:checked + span::after { transform: translateX(1.05rem); }
  .mtzb-stage .mtzb-switch b { font-size: .56rem; }
  .mtzb-recovery-core {
    top: 50%;
    left: 50%;
    width: 12.5rem;
    min-height: 0;
    padding: 0;
    transform: translate(-50%,-50%);
  }
  .mtzb-core-symbol {
    position: static;
    width: auto;
    height: auto;
    transform: none;
    border: 0;
    background: transparent;
    box-shadow: none;
  }
  .mtzb-core-symbol::before,
  .mtzb-core-symbol::after { display: none; }
  .mtzb-core-controls {
    width: 100%;
    padding: .5rem .62rem;
    border-color: rgba(55,79,81,.48);
    background: rgba(255,254,249,.79);
    box-shadow: 0 4px 12px rgba(13,41,48,.11);
    backdrop-filter: blur(2px);
  }
  .mtzb-core-controls h3 { margin-bottom: .35rem; padding-bottom: .25rem; font-size: .7rem; }
  .mtzb-core-controls > label { margin-top: .25rem; font-size: .58rem; }
  .mtzb-core-controls .mtzb-select,
  .mtzb-core-controls input { min-height: 1.75rem; font-size: .65rem; }
  .mtzb-recovery-stage-results {
    top: 12.5%;
    left: 29%;
    right: 29%;
    padding: 0;
    justify-content: space-between;
    gap: .5rem;
    font-size: .64rem;
  }
}

/* H-x calculator */
.mtzb-hx-hero { padding: clamp(2.5rem, 6vw, 4.5rem) 0; }
.mtzb-hx-hero h1 { max-width: 15ch; font-size: clamp(2.7rem, 5.5vw, 5.4rem); }
.mtzb-hx-workspace { padding-top: 2rem; }
.mtzb-hx-suite-nav { display: grid; grid-template-columns: minmax(10.5rem,.72fr) repeat(4,minmax(0,1fr)); gap: .55rem; margin-bottom: 1rem; padding: .65rem; background: #fff; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-md); box-shadow: 0 8px 24px rgba(16,47,70,.06); }
.mtzb-hx-suite-nav__title { display: flex; flex-direction: column; justify-content: center; padding: .45rem .65rem; }
.mtzb-hx-suite-nav__title span { color: var(--mtzb-brand); font-size: .68rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.mtzb-hx-suite-nav__title strong { margin-top: .1rem; color: var(--mtzb-ink); font-size: .9rem; }
.mtzb-hx-suite-nav a { min-width: 0; display: flex; flex-direction: column; justify-content: center; padding: .62rem .72rem; color: var(--mtzb-ink); background: var(--mtzb-paper); border: 1px solid transparent; border-radius: .55rem; text-decoration: none; transition: border-color .18s ease, background .18s ease, transform .18s ease; }
.mtzb-hx-suite-nav a:hover { border-color: #9dc7df; background: #eef7fc; transform: translateY(-1px); }
.mtzb-hx-suite-nav a strong { overflow: hidden; font-size: .82rem; line-height: 1.25; text-overflow: ellipsis; white-space: nowrap; }
.mtzb-hx-suite-nav a span { margin-top: .18rem; overflow: hidden; color: var(--mtzb-ink-soft); font-size: .67rem; line-height: 1.3; text-overflow: ellipsis; white-space: nowrap; }
.mtzb-hx-suite-nav a[aria-current="page"] { color: #fff; background: var(--mtzb-brand); border-color: var(--mtzb-brand); box-shadow: 0 6px 16px rgba(22,117,184,.18); }
.mtzb-hx-suite-nav a[aria-current="page"] span { color: rgba(255,255,255,.82); }
.mtzb-hx-help-launch { display: flex; justify-content: flex-end; margin: -.25rem 0 1rem; }
.mtzb-hx-help-button { display: inline-flex; align-items: center; gap: .48rem; padding: .48rem .72rem; color: var(--mtzb-brand-deep); background: #eef7fc; border: 1px solid #b8d8e9; border-radius: 999px; font: inherit; font-size: .78rem; font-weight: 800; cursor: pointer; }
.mtzb-hx-help-button span { display: grid; width: 1.25rem; height: 1.25rem; place-items: center; color: #fff; background: var(--mtzb-brand); border-radius: 50%; font-size: .78rem; }
.mtzb-hx-help-button:hover { background: var(--mtzb-brand-pale); border-color: #83bada; }
.mtzb-hx-help-button:focus-visible, .mtzb-hx-help__close:focus-visible, .mtzb-hx-help-tools a:focus-visible, .mtzb-hx-help-glossary summary:focus-visible { outline: 3px solid #6bb6df; outline-offset: 2px; }
.mtzb-hx-help-backdrop { position: fixed; z-index: 1090; inset: 0; background: rgba(16,47,70,.34); backdrop-filter: blur(2px); }
.mtzb-hx-help { position: fixed; z-index: 1100; top: 0; right: 0; bottom: 0; width: min(35rem,calc(100vw - 1rem)); overflow-y: auto; color: var(--mtzb-ink); background: #fff; border-left: 1px solid var(--mtzb-line); box-shadow: -18px 0 48px rgba(16,47,70,.18); }
.mtzb-hx-help[hidden], .mtzb-hx-help-backdrop[hidden] { display: none; }
.mtzb-hx-help-is-open { overflow: hidden; }
.mtzb-hx-help__head { position: sticky; z-index: 1; top: 0; display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; padding: 1.25rem 1.35rem; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--mtzb-line); backdrop-filter: blur(8px); }
.mtzb-hx-help__head span { color: var(--mtzb-brand); font-size: .68rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.mtzb-hx-help__head h2 { margin: .12rem 0 0; font-size: clamp(1.45rem,3vw,2rem); }
.mtzb-hx-help__close { flex: 0 0 auto; display: grid; width: 2.35rem; height: 2.35rem; padding: 0; place-items: center; color: var(--mtzb-ink); background: var(--mtzb-paper); border: 1px solid var(--mtzb-line); border-radius: 50%; font: 400 1.7rem/1 sans-serif; cursor: pointer; }
.mtzb-hx-help__body { padding: 1.35rem; }
.mtzb-hx-help__body section + section { margin-top: 1.75rem; }
.mtzb-hx-help__body h3 { margin-bottom: .8rem; font-size: 1.1rem; }
.mtzb-hx-help-tools { display: grid; grid-template-columns: 1fr 1fr; gap: .55rem; }
.mtzb-hx-help-tools a { display: flex; flex-direction: column; padding: .72rem; color: var(--mtzb-ink); background: var(--mtzb-paper); border: 1px solid var(--mtzb-line); border-radius: .6rem; text-decoration: none; }
.mtzb-hx-help-tools a strong { font-size: .84rem; }
.mtzb-hx-help-tools a span { margin-top: .18rem; color: var(--mtzb-ink-soft); font-size: .7rem; line-height: 1.35; }
.mtzb-hx-help-tools a[aria-current="page"] { color: #fff; background: var(--mtzb-brand); border-color: var(--mtzb-brand); }
.mtzb-hx-help-tools a[aria-current="page"] span { color: rgba(255,255,255,.82); }
.mtzb-hx-help-glossary { border-top: 1px solid var(--mtzb-line); }
.mtzb-hx-help-glossary details { border-bottom: 1px solid var(--mtzb-line); }
.mtzb-hx-help-glossary summary { position: relative; padding: .85rem 2rem .85rem 0; font-weight: 800; cursor: pointer; list-style: none; }
.mtzb-hx-help-glossary summary::-webkit-details-marker { display: none; }
.mtzb-hx-help-glossary summary::after { position: absolute; top: .72rem; right: .2rem; content: '+'; color: var(--mtzb-brand); font-size: 1.25rem; }
.mtzb-hx-help-glossary details[open] summary::after { content: '−'; }
.mtzb-hx-help-glossary p { margin: 0 0 .9rem; color: var(--mtzb-ink-soft); font-size: .88rem; line-height: 1.55; }
.mtzb-hx-help-steps { display: grid; gap: .55rem; margin: 0; padding-left: 1.4rem; color: var(--mtzb-ink-soft); font-size: .88rem; }
.mtzb-hx-help__note { margin: 1.75rem 0 0; padding: .85rem 1rem; color: #4b6475; background: #eef7fc; border-left: 3px solid var(--mtzb-brand); border-radius: .25rem .55rem .55rem .25rem; font-size: .8rem; line-height: 1.5; }
.mtzb-hx-toolbar { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1.25rem; padding: 1.1rem; background: var(--mtzb-paper-deep); border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-md); }
.mtzb-hx-process-picker { grid-column: 1 / -1; }
.mtzb-hx-picker-label { margin: 0 0 .65rem; font-weight: 700; }
.mtzb-hx-process-options { display: flex; flex-wrap: wrap; gap: .55rem; margin-bottom: .75rem; }
.mtzb-hx-process-options button { padding: .65rem .95rem; color: var(--mtzb-ink); background: #fff; border: 1px solid #91a6aa; border-radius: var(--mtzb-radius-sm); font: inherit; font-weight: 700; cursor: pointer; }
.mtzb-hx-process-options button[aria-pressed="true"] { color: var(--mtzb-brand-deep); background: #dcefeb; border-color: var(--mtzb-brand-deep); box-shadow: inset 0 0 0 1px var(--mtzb-brand-deep); }
.mtzb-hx-process-options button:focus-visible { outline: 3px solid #157da4; outline-offset: 2px; }
.mtzb-hx-choice-row { display: flex; flex-wrap: wrap; align-items: center; gap: .55rem; margin-top: .55rem; }
.mtzb-hx-choice-row > span { min-width: 11rem; color: var(--mtzb-ink-soft); }
.mtzb-hx-tool-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.mtzb-hx-tool-list > a { display: block; color: inherit; text-decoration: none; }
.mtzb-hx-tool-list > a:hover, .mtzb-hx-tool-list > a:focus-visible { border-color: var(--mtzb-brand-deep); transform: translateY(-2px); }
.mtzb-hx-tool-list h2 { font-size: 1.45rem; }
.mtzb-local-status-key { display: flex; flex-wrap: wrap; gap: .55rem; margin-bottom: 1rem; }
.mtzb-local-status { display: inline-flex; width: fit-content; margin-bottom: .8rem; padding: .3rem .55rem; border: 1px solid transparent; border-radius: 999px; font-size: .72rem; font-weight: 800; letter-spacing: .02em; }
.mtzb-local-status[data-status="verified"] { color: #145b48; background: #dcf4e9; border-color: #a8ddc9; }
.mtzb-local-status[data-status="estimate"] { color: #744c00; background: #fff0c9; border-color: #ecd18a; }
.mtzb-local-status[data-status="catalog"] { color: #234f73; background: #deeff9; border-color: #add3e7; }
.mtzb-local-tool-list .mtzb-card { display: flex; flex-direction: column; align-items: flex-start; }
.mtzb-local-tool-list .mtzb-card p { margin-bottom: 0; }
.mtzb-local-hub-note { margin-top: clamp(1.5rem, 4vw, 3rem); }
.mtzb-hx-layout { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(20rem, .85fr); gap: 1.25rem; align-items: start; }
.mtzb-hx-layout .mtzb-card h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
.mtzb-hx-layout .mtzb-actions { margin-top: 1.25rem; }
.mtzb-hx-input-columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; align-items: stretch; }
.mtzb-hx-state-column { padding: 1rem; background: #f2f7fa; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-md); }
.mtzb-hx-state-column--output { background: #e5f1f8; border-color: #bdd6e5; }
.mtzb-hx-state-column h3 { margin-bottom: 1rem; color: var(--mtzb-brand-deep); font-size: 1.12rem; letter-spacing: -.015em; }
.mtzb-hx-state-fields { display: grid; gap: 1rem; }
.mtzb-hx-result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .65rem; margin: 1.5rem 0; }
.mtzb-hx-result-grid > div { padding: .8rem; border: 1px solid rgba(255,255,255,.23); border-radius: var(--mtzb-radius-sm); }
.mtzb-hx-result-grid span { display: block; color: #b9d4d5; font-size: .78rem; }
.mtzb-hx-result-grid strong { display: block; margin-top: .15rem; font-variant-numeric: tabular-nums; }
.mtzb-hx-chart-card, .mtzb-hx-table-card { margin-top: 1.25rem; }
.mtzb-hx-section-head { display: grid; grid-template-columns: 1fr minmax(17rem, .7fr); gap: 2rem; align-items: end; }
.mtzb-hx-section-head h2, .mtzb-hx-table-card h2 { margin-bottom: 0; font-size: clamp(1.9rem, 3vw, 2.8rem); }
.mtzb-hx-section-head > p { margin: 0; color: var(--mtzb-ink-soft); }
.mtzb-hx-canvas-wrap { margin-top: 1.5rem; overflow-x: auto; background: #fffef9; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-sm); }
.mtzb-hx-canvas-wrap canvas { display: block; width: 100%; min-width: 680px; height: auto; }
.mtzb-hx-canvas-wrap canvas.is-interactive { cursor: crosshair; touch-action: none; }
.mtzb-hx-explorer { margin-top: 1.25rem; padding-top: 1.25rem; border-top: 1px solid var(--mtzb-line); }
.mtzb-hx-explorer > p { color: var(--mtzb-ink-soft); }
.mtzb-hx-explorer-intro { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.mtzb-hx-explorer-intro h3 { margin: 0 0 .25rem; color: var(--mtzb-brand-deep); font-size: 1.25rem; }
.mtzb-hx-explorer-intro p { margin: 0; color: var(--mtzb-ink-soft); }
.mtzb-hx-explorer-intro > span { flex: 0 0 auto; color: var(--mtzb-brand-deep); font-size: .82rem; font-weight: 750; }
.mtzb-hx-point-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.mtzb-hx-point-card { padding: 1rem; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-md); background: #f7f8f5; transition: border-color .18s ease, box-shadow .18s ease; }
.mtzb-hx-point-card.is-active { border-color: #267fae; box-shadow: 0 0 0 2px rgba(38,127,174,.12); }
.mtzb-hx-point-card[data-explore-point-card="2"].is-active { border-color: #d25d2f; box-shadow: 0 0 0 2px rgba(210,93,47,.12); }
.mtzb-hx-point-select { width: 100%; display: flex; align-items: center; gap: .55rem; padding: 0 0 .75rem; border: 0; background: transparent; color: var(--mtzb-brand-deep); font: inherit; font-weight: 800; text-align: left; cursor: pointer; }
.mtzb-hx-point-select i { width: .8rem; height: .8rem; flex: 0 0 auto; border: 3px solid #267fae; border-radius: 50%; background: #fff; }
.mtzb-hx-point-card[data-explore-point-card="2"] .mtzb-hx-point-select i { border-color: #d25d2f; }
.mtzb-hx-point-inputs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .65rem; }
.mtzb-hx-point-inputs label { color: var(--mtzb-ink-soft); font-size: .78rem; }
.mtzb-hx-point-inputs label > span { display: flex; align-items: center; gap: .35rem; margin-top: .25rem; color: var(--mtzb-ink); font-weight: 700; }
.mtzb-hx-point-inputs input { width: 100%; min-width: 0; padding: .65rem .7rem; border: 1px solid var(--mtzb-line); border-radius: .55rem; background: #fff; color: var(--mtzb-ink); font: inherit; font-variant-numeric: tabular-nums; }
.mtzb-hx-point-results { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .5rem; margin: .85rem 0 0; }
.mtzb-hx-point-results > div { min-width: 0; padding: .55rem; border-radius: .55rem; background: #e5f1f8; }
.mtzb-hx-point-results dt { color: var(--mtzb-ink-soft); font-size: .7rem; }
.mtzb-hx-point-results dd { margin: .12rem 0 0; color: var(--mtzb-brand-deep); font-size: .82rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.mtzb-hx-point-card .mtzb-error:empty { display: none; }
.mtzb-hx-explorer-values { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .65rem; }
.mtzb-hx-explorer-values > div { padding: .75rem; background: #e5f1f8; border-radius: var(--mtzb-radius-sm); }
.mtzb-hx-explorer-values span { display: block; color: var(--mtzb-ink-soft); font-size: .78rem; }
.mtzb-hx-explorer-values strong { display: block; margin-top: .1rem; font-variant-numeric: tabular-nums; }
.mtzb-hx-explorer-status { min-height: 3rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: .8rem; color: var(--mtzb-ink-soft); }
.mtzb-button-compact { min-height: 2.5rem; padding: .55rem .8rem; }
.mtzb-table-scroll { overflow-x: auto; }
.mtzb-hx-table { width: 100%; margin-top: 1.25rem; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.mtzb-hx-table th, .mtzb-hx-table td { padding: .8rem .9rem; text-align: left; border-bottom: 1px solid var(--mtzb-line); }
.mtzb-hx-table thead th { color: var(--mtzb-brand-deep); background: #e6eff5; }
.mtzb-hx-table tbody th { white-space: nowrap; }
.mtzb-hx-method { margin-top: 3.5rem; }
.mtzb-hx-method h2 { font-size: clamp(1.9rem, 3vw, 2.8rem); }
.mtzb-hr-workspace { padding: 1.25rem; }
.mtzb-hr-grid { display: grid; grid-template-columns: minmax(16rem, 1fr) minmax(16rem, .9fr) minmax(16rem, 1fr); gap: 1rem; align-items: stretch; }
.mtzb-hr-side, .mtzb-hr-unit { min-width: 0; padding: 1.1rem; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-md); }
.mtzb-hr-side { background: #f2f7fa; }
.mtzb-hr-side--outputs { background: #e5f1f8; border-color: #bdd6e5; }
.mtzb-hr-side h2, .mtzb-hr-unit h2 { margin-bottom: 1.1rem; font-size: clamp(1.45rem, 2.3vw, 2rem); }
.mtzb-hr-stream { padding: 1rem; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-sm); background: rgba(255,255,255,.72); }
.mtzb-hr-stream + .mtzb-hr-stream { margin-top: 1rem; }
.mtzb-hr-stream h3 { display: flex; align-items: center; gap: .5rem; margin-bottom: .9rem; font-size: 1rem; color: var(--mtzb-brand-deep); }
.mtzb-hr-dot { width: .7rem; height: .7rem; flex: 0 0 auto; border-radius: 50%; background: #4b98b6; }
.mtzb-hr-stream--extract .mtzb-hr-dot { background: #d97847; }
.mtzb-hr-unit { display: flex; flex-direction: column; background: var(--mtzb-brand-deep); color: #fff; box-shadow: 0 18px 38px rgba(13,41,48,.16); }
.mtzb-hr-unit .mtzb-eyebrow, .mtzb-hr-unit label { color: #c9dfe0; }
.mtzb-hr-unit .mtzb-select, .mtzb-hr-unit input { background: #fff; color: var(--mtzb-ink); }
.mtzb-hr-unit-visual { position: relative; height: 8.5rem; margin-bottom: 1rem; overflow: hidden; border: 1px solid rgba(255,255,255,.24); border-radius: var(--mtzb-radius-md); background: linear-gradient(180deg,rgba(75,152,182,.24) 0 48%,rgba(217,120,71,.24) 52% 100%); }
.mtzb-hr-core { position: absolute; inset: 50% auto auto 50%; width: 4.6rem; height: 4.6rem; display: grid; place-content: center; transform: translate(-50%,-50%) rotate(45deg); border: 2px solid #fff; background: rgba(13,41,48,.88); font-size: 1.05rem; line-height: 1; text-align: center; }
.mtzb-hr-core br { display: none; }
.mtzb-hr-arrow { position: absolute; left: 8%; right: 8%; font-size: 2rem; letter-spacing: .25rem; }
.mtzb-hr-arrow--top { top: .55rem; color: #8ed5ef; text-align: right; }
.mtzb-hr-arrow--bottom { bottom: .55rem; color: #ffae7d; }
.mtzb-hr-power { margin: 1rem 0; padding: 1rem; border: 1px solid rgba(255,255,255,.24); border-radius: var(--mtzb-radius-sm); background: rgba(255,255,255,.09); }
.mtzb-hr-power span { display: block; color: #c9dfe0; font-size: .82rem; }
.mtzb-hr-power strong { display: block; margin-top: .2rem; font-size: 1.8rem; }
.mtzb-hr-unit .mtzb-button { width: 100%; margin-top: auto; }
.mtzb-hr-values { display: grid; grid-template-columns: 1fr 1fr; gap: .55rem; margin: 0; }
.mtzb-hr-values div { padding: .65rem; border-radius: .45rem; background: #fff; }
.mtzb-hr-values dt { color: var(--mtzb-ink-soft); font-size: .75rem; }
.mtzb-hr-values dd { margin: .15rem 0 0; color: var(--mtzb-brand-deep); font-weight: 750; font-variant-numeric: tabular-nums; }

/* Duct sizing calculator */
.mtzb-calculator-page > .mtzb-hero,
main[data-calculator] > .mtzb-hero,
main:has(> .mtzb-hero + .mtzb-section[data-calculator]) > .mtzb-hero { padding: clamp(1.5rem, 3vw, 2.5rem) 0; }
.mtzb-calculator-page > .mtzb-hero h1,
main[data-calculator] > .mtzb-hero h1,
main:has(> .mtzb-hero + .mtzb-section[data-calculator]) > .mtzb-hero h1 {
  max-width: 26ch;
  margin-bottom: .85rem;
  font-size: clamp(2.15rem, 4vw, 3.8rem);
}
.mtzb-calculator-page > .mtzb-hero .mtzb-eyebrow,
main[data-calculator] > .mtzb-hero .mtzb-eyebrow,
main:has(> .mtzb-hero + .mtzb-section[data-calculator]) > .mtzb-hero .mtzb-eyebrow { margin-bottom: .6rem; }
.mtzb-calculator-page > .mtzb-hero .mtzb-lead,
main[data-calculator] > .mtzb-hero .mtzb-lead,
main:has(> .mtzb-hero + .mtzb-section[data-calculator]) > .mtzb-hero .mtzb-lead { max-width: none; margin-bottom: 0; }
main[data-calculator] > .mtzb-section .mtzb-reading,
main:has(> .mtzb-hero + .mtzb-section[data-calculator]) > .mtzb-section .mtzb-reading { max-width: none; }
.mtzb-page:has(.mtzb-calculator) { padding-top: 0; }
.mtzb-content-grid:has(.mtzb-calculator) { padding-top: clamp(1.15rem, 2.2vw, 1.8rem); }
.mtzb-component .com-content-article:has(.mtzb-calculator) { max-width: none; }
.mtzb-component .com-content-article:has(.mtzb-calculator) .page-header { margin-bottom: .65rem; }
.mtzb-component .com-content-article:has(.mtzb-calculator) .page-header h1,
.mtzb-component .com-content-article:has(.mtzb-calculator) .page-header h2 { max-width: none; font-size: clamp(1.9rem, 3vw, 2.75rem); }
.mtzb-component .com-content-article:has(.mtzb-calculator) .mtzb-calc-intro,
.mtzb-component .com-content-article:has(.mtzb-calculator) .mtzb-calc-intro .mtzb-lead,
.mtzb-component .com-content-article:has(.mtzb-calculator) > .mtzb-lead,
.mtzb-component .com-content-article:has(.mtzb-calculator) .mtzb-reading,
.mtzb-component .com-content-article:has(.mtzb-calculator) .mtzb-calc-reading,
.mtzb-component .com-content-article:has(.mtzb-calculator) .mtzb-hx-method { max-width: none; }
.mtzb-component .com-content-article:has(.mtzb-calculator) .mtzb-calculator,
.mtzb-component .com-content-article:has(.mtzb-calculator) .moduletable,
.mtzb-component .com-content-article:has(.mtzb-calculator) .joomla-module { width: 100%; max-width: none; }
.mtzb-component .com-content-article:has(.mtzb-calculator) .mtzb-calc-intro { margin-bottom: 1.25rem; }
.mtzb-duct-hero { padding: clamp(1.5rem, 3vw, 2.5rem) 0; }
.mtzb-duct-hero h1 { max-width: 24ch; margin-bottom: .85rem; font-size: clamp(2.15rem, 4vw, 3.8rem); }
.mtzb-duct-hero .mtzb-eyebrow { margin-bottom: .6rem; }
.mtzb-duct-hero .mtzb-lead { margin-bottom: 0; }
.mtzb-duct-workspace { padding-top: 2rem; }
.mtzb-duct-workspace [hidden] { display: none !important; }
.mtzb-duct-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(18rem, .8fr); gap: 1.2rem; align-items: start; }
.mtzb-duct-grid--simple { grid-template-columns: minmax(0, 1fr); }
.mtzb-duct-grid > * { min-width: 0; }
.mtzb-duct-grid .mtzb-card > h2 { font-size: clamp(1.85rem, 3.4vw, 3rem); }
.mtzb-duct-field-wide { grid-column: 1 / -1; }
.mtzb-duct-field-label { font-weight: 750; }
.mtzb-duct-speed-row { display: flex; align-items: center; gap: .55rem; flex-wrap: wrap; }
.mtzb-duct-workspace [data-rectangular-only][hidden] { display: none !important; }
main[data-material="rectangular"] .mtzb-duct-speed-field { grid-column: 1 / -1; }
.mtzb-duct-equivalent { display: grid; gap: .08rem; margin-left: auto; padding: .45rem .7rem; border: 1px solid #bfd8e7; border-radius: var(--mtzb-radius-sm); background: #f2f8fc; }
.mtzb-duct-equivalent span { color: var(--mtzb-ink-soft); font-size: .7rem; }
.mtzb-duct-equivalent strong { color: var(--mtzb-brand-deep); font-size: 1.1rem; }
.mtzb-duct-equivalent small { max-width: 29ch; color: var(--mtzb-ink-soft); font-size: .68rem; line-height: 1.35; }
.mtzb-duct-inline-speed { min-height: 2.9rem; display: flex; align-items: center; padding: .45rem .8rem; color: var(--mtzb-brand-deep); background: var(--mtzb-brand-pale); border: 1px solid #8bb6d0; border-radius: var(--mtzb-radius-sm); font-size: 1.24rem; font-weight: 850; font-variant-numeric: tabular-nums; }
.mtzb-duct-velocity-status { display: inline-flex; align-items: center; gap: .35rem; padding: .35rem .55rem; border-radius: 999px; font-size: .74rem; font-weight: 800; line-height: 1.2; }
.mtzb-duct-velocity-status::before { display: grid; place-items: center; width: 1.1rem; height: 1.1rem; flex: 0 0 auto; border-radius: 50%; font-size: .7rem; font-weight: 900; }
.mtzb-duct-velocity-status[data-level="good"] { color: #145b48; background: #dcf4e9; }
.mtzb-duct-velocity-status[data-level="good"]::before { content: '✓'; color: #fff; background: #23765b; }
.mtzb-duct-velocity-status[data-level="near"] { color: #744c00; background: #fff0c9; }
.mtzb-duct-velocity-status[data-level="near"]::before { content: '!'; color: #fff; background: #a66c00; }
.mtzb-duct-velocity-status[data-level="high"] { color: #872b20; background: #ffe3dc; }
.mtzb-duct-velocity-status[data-level="high"]::before { content: '!'; color: #fff; background: #b43d30; }
.mtzb-duct-velocity-status[data-level="unknown"] { color: var(--mtzb-ink-soft); background: #edf3f7; }
.mtzb-duct-velocity-status[data-level="unknown"]::before { content: '–'; color: #fff; background: #718b8d; }
.mtzb-duct-inline-rectangle { padding: 1rem; background: #edf5fa; border: 1px solid #c5dbe8; border-radius: var(--mtzb-radius-md); }
.mtzb-duct-plastic-rectangle { background: #f5f8f7; border-color: #d4dfdc; }
.mtzb-duct-plastic-format-row { display: grid; grid-template-columns: minmax(15rem, 1fr) minmax(13rem, .8fr); gap: 1rem; align-items: end; }
.mtzb-duct-plastic-format-row > div { min-width: 0; display: grid; gap: .25rem; }
.mtzb-duct-format-speed { display: flex; justify-content: space-between; align-items: end; gap: 1rem; margin-top: .85rem; }
.mtzb-duct-format-speed > div { display: grid; gap: .25rem; }
.mtzb-duct-reset-button { min-height: 2.7rem; padding: .55rem .8rem; color: var(--mtzb-brand-deep); background: #fff; border: 1px solid #8bb6d0; border-radius: var(--mtzb-radius-sm); font: inherit; font-size: .78rem; font-weight: 800; cursor: pointer; }
.mtzb-duct-reset-button:hover { color: #fff; background: var(--mtzb-brand-deep); }
.mtzb-duct-height-limited { background: #f7f4ec; border-color: #ddd4bd; }
.mtzb-duct-height-limited-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); gap: .6rem; align-items: end; }
.mtzb-duct-calculated-dimension { min-height: 3.15rem; display: flex; align-items: center; padding: .7rem .9rem; color: var(--mtzb-brand-deep); background: #fff; border: 1px solid #c9c1ad; border-radius: var(--mtzb-radius-sm); font-size: 1.1rem; font-weight: 850; font-variant-numeric: tabular-nums; }
.mtzb-duct-limited-warning { margin: .8rem 0 0; }
.mtzb-duct-rect-dimensions { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); gap: .6rem; align-items: start; }
.mtzb-duct-dimension { min-width: 0; display: grid; gap: .25rem; }
.mtzb-duct-dimension .mtzb-unit { min-width: 2.6rem; }
.mtzb-duct-times { padding-bottom: .45rem; color: var(--mtzb-brand-deep); font-size: 1.5rem; font-weight: 700; }
.mtzb-duct-inline-warning { margin: 0; }
.mtzb-duct-result { position: static; }
.mtzb-duct-result h2 { margin-bottom: .55rem; font-size: clamp(2.6rem, 5vw, 4.4rem); }
.mtzb-duct-result-lead { color: #c6d7d8; font-size: .91rem; }
.mtzb-duct-key-stat { border-color: #87c2e2; background: rgba(135, 194, 226, .14); }
.mtzb-duct-key-stat dd { font-size: 1.4rem; }
.mtzb-duct-method { margin-top: 3rem; }
@media (max-width: 900px) {
  .mtzb-duct-grid { grid-template-columns: 1fr; }
  .mtzb-duct-plastic-format-row { grid-template-columns: 1fr; align-items: stretch; }
  .mtzb-duct-format-speed { align-items: stretch; flex-direction: column; }
  .mtzb-duct-reset-button { align-self: flex-start; }
  .mtzb-duct-height-limited-grid { grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); }
}

/* Local fitting resistance prototype */
.mtzb-local-workspace { padding-top: 2rem; }
.mtzb-local-workspace [hidden] { display: none !important; }
.mtzb-local-vane-control { align-content: start; }
.mtzb-local-check { display: flex; gap: .7rem; align-items: flex-start; padding: .8rem; background: #f2f8fc; border: 1px solid #c5dbe8; border-radius: var(--mtzb-radius-sm); cursor: pointer; }
.mtzb-local-check input { width: 1.15rem; height: 1.15rem; margin-top: .15rem; accent-color: var(--mtzb-brand); }
.mtzb-local-check span { display: grid; gap: .15rem; }
.mtzb-local-check strong { color: var(--mtzb-ink); font-size: .9rem; }
.mtzb-local-check small { color: var(--mtzb-ink-soft); line-height: 1.4; }
.mtzb-local-vane-state { margin-top: .35rem; color: var(--mtzb-brand-deep); font-size: .8rem; font-weight: 750; }
.mtzb-local-radius-fields { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: .7rem; }
.mtzb-local-radius-fields > div { min-width: 0; display: grid; gap: .25rem; }
.mtzb-local-pair { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: .6rem; }
.mtzb-local-pair > div { min-width: 0; display: grid; gap: .25rem; }
.mtzb-local-geometry { display: grid; grid-template-columns: minmax(15rem,.58fr) minmax(26rem,1.42fr); gap: 2rem; align-items: center; margin-top: 1.2rem; }
.mtzb-local-geometry h2 { font-size: clamp(1.85rem,3.2vw,3rem); }
.mtzb-local-geometry p:not(.mtzb-eyebrow) { color: var(--mtzb-ink-soft); }
.mtzb-pencil-sheet { min-width: 0; padding: .65rem; background: #f8f6ef; border: 1px solid #d8d2c3; border-radius: var(--mtzb-radius-md); box-shadow: inset 0 0 2rem rgba(100,88,63,.05); }
.mtzb-pencil-sheet svg { width: 100%; height: auto; display: block; background-image: linear-gradient(rgba(71,99,95,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(71,99,95,.035) 1px,transparent 1px); background-size: 18px 18px; }
.mtzb-pencil-sheet [hidden] { display: none !important; }
.mtzb-sketch-group { filter: url(#pencil-rough); }
.mtzb-sketch-fill { fill: url(#pencil-hatch); stroke: none; }
.mtzb-sketch-outline { fill: none; stroke: #3f4745; stroke-width: 2.1; stroke-linecap: round; stroke-linejoin: round; }
.mtzb-sketch-axis { fill: none; stroke: #74807d; stroke-width: 1.1; stroke-dasharray: 10 7; }
.mtzb-sketch-flow { fill: none; stroke: #1f6f9e; stroke-width: 2.2; stroke-dasharray: 12 9; animation: mtzb-flow-dash 2.2s linear infinite; }
.mtzb-sketch-vane { fill: none; stroke: #4d5855; stroke-width: 2.5; stroke-linecap: round; }
.mtzb-sketch-extension { stroke: #7a8581; stroke-width: .9; }
.mtzb-sketch-dimension { fill: none; stroke: #1f6f9e; stroke-width: 1.15; }
.mtzb-sketch-center { fill: #1f6f9e; }
.mtzb-sketch-title { fill: #39423f; font: 750 14px/1 sans-serif; letter-spacing: 1.1px; }
.mtzb-sketch-label { fill: #155a84; font: 800 18px/1 sans-serif; }
.mtzb-sketch-note { fill: #59635f; font: italic 12px/1.2 sans-serif; }
.mtzb-sketch-caption { margin: .2rem .45rem .35rem !important; font-size: .75rem; line-height: 1.45; }
main[data-shape="round"] [data-rect-sketch], main[data-shape="rectangular"] [data-round-sketch] { display: none !important; }
main[data-calculator="transition-resistance"][data-geometry="centered"] [data-offset-sketch],
main[data-calculator="transition-resistance"][data-geometry="centered"] [data-offset-copy],
main[data-calculator="transition-resistance"][data-geometry="offset"] [data-centered-sketch],
main[data-calculator="transition-resistance"][data-geometry="offset"] [data-centered-copy] { display: none !important; }
main[data-calculator="transition-resistance"][data-round-geometry="centered"] [data-round-one-sided-sketch],
main[data-calculator="transition-resistance"][data-round-geometry="centered"] [data-round-one-sided-copy],
main[data-calculator="transition-resistance"][data-round-geometry="one-sided"] [data-round-centered-sketch],
main[data-calculator="transition-resistance"][data-round-geometry="one-sided"] [data-round-centered-copy] { display: none !important; }
.mtzb-transition-sketch[data-branch-sketch] { display: none; }
main[data-calculator="branch-resistance"][data-angle="90"] [data-branch-sketch="90"],
main[data-calculator="branch-resistance"][data-angle="45"] [data-branch-sketch="45"] { display: block; }
main[data-calculator="branch-resistance"] .mtzb-sketch-fill { fill: url(#branch-hatch); }
main[data-calculator="terminal-resistance"] .mtzb-sketch-fill { fill: url(#terminal-hatch); }
main[data-calculator="mixed-transition-resistance"] .mtzb-sketch-fill { fill: url(#mixed-hatch); }
.mtzb-transition-sketch .mtzb-sketch-fill { fill: url(#transition-pencil-hatch); }
.mtzb-transition-sketch { filter: url(#transition-pencil-rough); }
@keyframes mtzb-flow-dash { to { stroke-dashoffset: -42; } }
@media (max-width: 900px) {
  .mtzb-local-geometry { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .mtzb-local-radius-fields, .mtzb-local-pair { grid-template-columns: 1fr; }
}

/* Dynamic duct route builder */
.mtzb-route-overview { margin-bottom: 2rem; }
.mtzb-route-project-actions { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1rem; }
.mtzb-route-project-actions .mtzb-button { padding: .7rem .9rem; font-size: .78rem; }
.mtzb-route-builder { margin-top: 1rem; }
.mtzb-route-builder-head { display: flex; justify-content: space-between; align-items: end; gap: 1rem; margin-bottom: 1rem; }
.mtzb-route-builder-head h2 { margin-bottom: .25rem; }
.mtzb-route-elements { display: grid; gap: 1rem; }
.mtzb-route-element { padding: 1rem; border-left: 4px solid var(--mtzb-brand); }
.mtzb-route-element-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding-bottom: .85rem; border-bottom: 1px solid var(--mtzb-line); }
.mtzb-route-element-ident { display: flex; align-items: center; gap: .75rem; min-width: 0; }
.mtzb-route-element-ident > div { min-width: 0; display: grid; gap: .05rem; }
.mtzb-route-element-ident strong { color: var(--mtzb-brand-deep); font-family: var(--mtzb-serif); font-size: 1.35rem; }
.mtzb-route-order { display: grid; place-items: center; width: 2.2rem; height: 2.2rem; flex: 0 0 auto; color: #fff; background: var(--mtzb-brand); border-radius: 50%; font-weight: 850; }
.mtzb-route-element-result { color: var(--mtzb-ink-soft); font-size: .8rem; font-weight: 750; }
.mtzb-route-element-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .35rem; }
.mtzb-route-icon-button { min-height: 2rem; padding: .35rem .55rem; color: var(--mtzb-brand-deep); background: #f2f8fc; border: 1px solid #c5dbe8; border-radius: .55rem; font: inherit; font-size: .73rem; font-weight: 800; cursor: pointer; }
.mtzb-route-icon-button:hover { background: var(--mtzb-brand-pale); }
.mtzb-route-icon-button--danger { color: #8b3329; border-color: #e5c3bd; background: #fff7f5; }
.mtzb-route-element-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .8rem; margin-top: 1rem; }
.mtzb-route-element-grid .mtzb-field { min-width: 0; }
.mtzb-route-element-grid label { display: grid; gap: .35rem; }
.mtzb-route-element-grid .mtzb-route-field-wide { grid-column: span 2; }
.mtzb-route-breakdown { margin-top: 2rem; }
.mtzb-route-table-wrap { overflow-x: auto; margin-top: 1rem; border: 1px solid var(--mtzb-line); border-radius: var(--mtzb-radius-sm); }
.mtzb-route-table { width: 100%; min-width: 58rem; border-collapse: collapse; font-size: .82rem; font-variant-numeric: tabular-nums; }
.mtzb-route-table th, .mtzb-route-table td { padding: .75rem .7rem; text-align: left; border-bottom: 1px solid var(--mtzb-line); }
.mtzb-route-table th { color: var(--mtzb-brand-deep); background: #eaf3f9; font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; }
.mtzb-route-table tbody tr:last-child td { border-bottom: 0; }
.mtzb-route-table td:nth-last-child(-n+3) { font-weight: 750; }
.mtzb-notice[data-error="true"] { color: #8b3329; border-color: #e5c3bd; background: #fff1ee; }
.mtzb-route-transfer-button { width: 100%; margin-top: 1rem; }
.mtzb-route-transfer-button:disabled { cursor: not-allowed; opacity: .5; }
.mtzb-route-transfer-choice { display: grid; gap: .35rem; margin-top: 1rem; }
.mtzb-route-transfer-choice label { color: var(--mtzb-ink-soft); font-size: .78rem; font-weight: 750; }
@media (max-width: 1000px) {
  .mtzb-route-element-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 700px) {
  .mtzb-route-builder-head, .mtzb-route-element-head { align-items: stretch; flex-direction: column; }
  .mtzb-route-builder-head .mtzb-button { width: 100%; }
  .mtzb-route-element-actions { justify-content: flex-start; }
  .mtzb-route-element-grid { grid-template-columns: 1fr; }
  .mtzb-route-element-grid .mtzb-route-field-wide { grid-column: auto; }
}

/* Calculator-first homepage prototype */
.mtzb-home-prototype {
  --mtzb-home-navy: #082b3f;
  --mtzb-home-blue: #0d5f82;
  --mtzb-home-sky: #5fc3e1;
  --mtzb-home-ice: #eaf6fb;
  background: #f3f7f8;
}
.mtzb-home-prototype .mtzb-home-header { border-bottom-color: rgba(18,72,94,.16); }
.mtzb-home-prototype .mtzb-utility { background: #07283a; }
.mtzb-home-prototype .mtzb-logo strong { color: var(--mtzb-home-blue); }
.mtzb-home-prototype .mtzb-menu-feature { background: var(--mtzb-home-blue); }
.mtzb-home-prototype .mtzb-menu a:not(.mtzb-menu-feature):hover { color: var(--mtzb-home-blue); }

.mtzb-tool-hero { position: relative; min-height: calc(100svh - 7.75rem); overflow: hidden; isolation: isolate; color: #eef9fd; background: linear-gradient(112deg,#061f30 0%,#0a3d58 52%,#176b88 100%); }
.mtzb-tool-hero-media { position: absolute; z-index: -3; inset: 0 0 0 42%; opacity: .66; mix-blend-mode: luminosity; }
.mtzb-tool-hero-media::after { position: absolute; inset: 0; content: ''; background: linear-gradient(90deg,#082b3f 0%,rgba(8,43,63,.84) 15%,rgba(8,43,63,.18) 68%), linear-gradient(0deg,rgba(4,25,39,.7),transparent 56%); }
.mtzb-tool-hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: 58% center; filter: saturate(.65) contrast(1.05); }
.mtzb-tool-hero-grid { position: absolute; z-index: -2; inset: 0; opacity: .15; background-image: linear-gradient(rgba(144,219,239,.36) 1px,transparent 1px),linear-gradient(90deg,rgba(144,219,239,.36) 1px,transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(90deg,#000 0%,rgba(0,0,0,.7) 55%,transparent 100%); }
.mtzb-tool-hero-inner { min-height: calc(100svh - 7.75rem); position: relative; display: grid; grid-template-columns: minmax(0,1fr) minmax(17rem,.42fr); align-items: end; gap: 4rem; padding-block: clamp(5rem,10vh,8rem) 3rem; }
.mtzb-tool-hero-copy { align-self: center; max-width: 52rem; }
.mtzb-tool-kicker { display: flex; align-items: center; gap: .75rem; margin-bottom: 1.35rem; color: #9ddced; font-size: .74rem; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.mtzb-tool-kicker span { width: 2.8rem; height: 1px; background: #75d2e9; }
.mtzb-tool-hero h1 { max-width: none; margin: 0 0 1.5rem; color: #fff; font-size: clamp(3.6rem,7.4vw,7.5rem); line-height: .93; letter-spacing: -.065em; }
.mtzb-tool-hero h1 em { display: inline-block; color: #8ad8eb; font-weight: 400; }
.mtzb-tool-hero-copy > p:not(.mtzb-tool-kicker) { max-width: 44rem; margin-bottom: 0; color: #c4dce5; font-size: clamp(1.08rem,1.8vw,1.32rem); }
.mtzb-tool-hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 1rem 1.35rem; margin-top: 2rem; }
.mtzb-tool-primary { min-height: 3.4rem; display: inline-flex; align-items: center; gap: 2.3rem; padding: .85rem 1.15rem; color: #062536 !important; background: #a8e3f1; border: 1px solid #a8e3f1; border-radius: .45rem; font-weight: 850; text-decoration: none; transition: transform .2s ease,background .2s ease; }
.mtzb-tool-primary:hover { background: #fff; transform: translateY(-2px); }
.mtzb-tool-secondary { color: #e9f8fc !important; font-weight: 750; text-decoration-color: rgba(233,248,252,.48); }
.mtzb-tool-trust { display: flex; flex-wrap: wrap; gap: .7rem 1.5rem; margin: 2.3rem 0 0; padding: 1.25rem 0 0; border-top: 1px solid rgba(196,228,237,.24); color: #bfd7df; list-style: none; font-size: .8rem; }
.mtzb-tool-trust span { margin-right: .3rem; color: #6dc9df; font: 800 .68rem ui-monospace,monospace; }
.mtzb-tool-hero-note { align-self: end; display: flex; gap: .85rem; padding: 1rem 1.1rem; color: #d7edf3; background: rgba(4,30,45,.64); border: 1px solid rgba(171,222,234,.24); border-radius: .7rem; box-shadow: 0 18px 45px rgba(0,0,0,.15); backdrop-filter: blur(12px); font-size: .82rem; }
.mtzb-tool-hero-note p { margin: 0; }
.mtzb-tool-status { width: .65rem; height: .65rem; flex: 0 0 auto; margin-top: .35rem; border-radius: 50%; background: #64d4e7; box-shadow: 0 0 0 6px rgba(100,212,231,.13); }
.mtzb-airflow-lines { position: absolute; z-index: -1; right: -5vw; bottom: 16%; width: 48vw; height: 8rem; opacity: .52; transform: rotate(-5deg); }
.mtzb-airflow-lines i { position: absolute; right: 0; width: 100%; height: 1px; background: linear-gradient(90deg,transparent,#85dcf0 35%,transparent 90%); animation: mtzb-airflow 6s ease-in-out infinite; }
.mtzb-airflow-lines i:nth-child(2) { top: 2.4rem; width: 82%; animation-delay: -2s; }
.mtzb-airflow-lines i:nth-child(3) { top: 4.8rem; width: 64%; animation-delay: -4s; }
@keyframes mtzb-airflow { 0%,100% { transform: translateX(8%); opacity: .35; } 50% { transform: translateX(-5%); opacity: .9; } }

.mtzb-tool-section { padding: clamp(4.5rem,8vw,7rem) 0; background: #f3f7f8; }
.mtzb-tool-section-heading { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(20rem,.8fr); gap: 4rem; align-items: end; margin-bottom: 2.4rem; }
.mtzb-tool-eyebrow { margin-bottom: .7rem; color: var(--mtzb-home-blue); font-size: .72rem; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.mtzb-tool-section-heading h2,.mtzb-tool-about h2 { max-width: 18ch; margin-bottom: 0; font-size: clamp(2.4rem,4.5vw,4.6rem); }
.mtzb-tool-section-heading > p { max-width: 46ch; margin: 0; color: #56717b; }
.mtzb-home-tools { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1rem; }
.mtzb-home-tool { min-height: 12.5rem; display: grid; grid-template-columns: auto minmax(0,1fr) auto; gap: 1.2rem; align-items: center; padding: clamp(1.25rem,2.5vw,2rem); color: #0b2e3d !important; background: #fff; border: 1px solid #d4e2e6; border-radius: 1rem; box-shadow: 0 14px 40px rgba(8,43,63,.06); text-decoration: none; transition: transform .22s ease,border-color .22s ease,box-shadow .22s ease; }
.mtzb-home-tool:hover { border-color: #69b7d0; box-shadow: 0 22px 55px rgba(8,43,63,.12); transform: translateY(-4px); }
.mtzb-home-tool-icon { width: 4.8rem; height: 4.8rem; display: grid; place-items: center; color: #fff; background: #1d7190; border-radius: 50%; font-size: 1.15rem; font-weight: 850; }
.mtzb-home-tool--violet .mtzb-home-tool-icon { background: #635c91; }
.mtzb-home-tool--cyan .mtzb-home-tool-icon { background: #338da5; }
.mtzb-home-tool--navy .mtzb-home-tool-icon { background: #123d58; }
.mtzb-home-tool-copy { min-width: 0; display: grid; gap: .35rem; }
.mtzb-home-tool-copy small { color: #28728d; font-size: .69rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.mtzb-home-tool-copy strong { font: 500 clamp(1.55rem,2.5vw,2.2rem)/1.08 var(--mtzb-display); letter-spacing: -.035em; }
.mtzb-home-tool-copy em { max-width: 43ch; color: #5b7077; font-size: .85rem; font-style: normal; }
.mtzb-home-tool-arrow { align-self: start; color: #257994; font-size: 1.2rem; }
.mtzb-home-tools-action { margin-top: 1.5rem; text-align: right; }
.mtzb-home-tools-action a { color: #0d5875; font-weight: 850; text-decoration-thickness: 2px; }

.mtzb-tool-about { padding: clamp(4.5rem,8vw,7.5rem) 0; color: #d8edf3; background: #092f45; }
.mtzb-tool-about-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(3rem,8vw,8rem); }
.mtzb-tool-about .mtzb-tool-eyebrow { color: #72cee3; }
.mtzb-tool-about h2 { color: #fff; }
.mtzb-tool-about-copy > p { max-width: 52ch; color: #bdd5de; font-size: 1.08rem; }
.mtzb-tool-principles { margin-top: 2.5rem; border-top: 1px solid rgba(201,231,239,.22); }
.mtzb-tool-principles article { display: grid; grid-template-columns: 3rem minmax(0,1fr); gap: .2rem 1rem; padding: 1.25rem 0; border-bottom: 1px solid rgba(201,231,239,.18); }
.mtzb-tool-principles article > span { grid-row: 1 / 3; color: #68c5da; font: 800 .72rem ui-monospace,monospace; }
.mtzb-tool-principles strong { color: #fff; }
.mtzb-tool-principles p { margin: .2rem 0 0; color: #9dbdc8; font-size: .86rem; }
.mtzb-tool-related { padding: clamp(4rem,7vw,6rem) 0; background: #eef5f7; }
.mtzb-tool-footer { background: #051f2e; }

@media (max-width: 980px) {
  .mtzb-tool-hero,.mtzb-tool-hero-inner { min-height: auto; }
  .mtzb-tool-hero-inner { grid-template-columns: 1fr; align-items: start; padding-block: 5rem 2.5rem; }
  .mtzb-tool-hero-copy { max-width: 44rem; }
  .mtzb-tool-hero-note { max-width: 32rem; }
  .mtzb-tool-hero-media { left: 32%; }
  .mtzb-tool-section-heading,.mtzb-tool-about-grid { grid-template-columns: 1fr; gap: 1.5rem; }
}
@media (max-width: 700px) {
  .mtzb-tool-hero-media { inset: 43% -28% 0 0; opacity: .42; }
  .mtzb-tool-hero-media::after { background: linear-gradient(180deg,#082b3f 0%,rgba(8,43,63,.45) 55%,rgba(4,25,39,.75)); }
  .mtzb-tool-hero h1 { font-size: clamp(3rem,15vw,4.65rem); }
  .mtzb-tool-hero-inner { gap: 2.3rem; padding-top: 3.7rem; }
  .mtzb-tool-hero-actions { align-items: stretch; flex-direction: column; }
  .mtzb-tool-primary { justify-content: space-between; }
  .mtzb-tool-trust { display: grid; }
  .mtzb-home-tools { grid-template-columns: 1fr; }
  .mtzb-home-tool { min-height: 0; grid-template-columns: auto minmax(0,1fr); }
  .mtzb-home-tool-arrow { display: none; }
  .mtzb-home-tool-icon { width: 3.8rem; height: 3.8rem; }
  .mtzb-home-tools-action { text-align: left; }
}
@media (prefers-reduced-motion: reduce) { .mtzb-airflow-lines i { animation: none; } }


@media (max-width: 980px) {
  .mtzb-calculator .mtzb-recovery-schema { grid-template-columns: 1fr; }
  .mtzb-calculator .mtzb-recovery-machine { min-height: 33rem; }
  .mtzb-calculator .mtzb-recovery-summary { grid-template-columns: repeat(2,1fr); }
  .mtzb-calculator .mtzb-recovery-summary .mtzb-button { grid-column: 1 / -1; }
}
@media (max-width: 700px) {
  .mtzb-calculator .mtzb-grid, .mtzb-calculator .mtzb-fields, .mtzb-calculator .mtzb-volume-helper__grid,
  .mtzb-calculator .mtzb-calc-grid, .mtzb-calculator .mtzb-calc-fields, .mtzb-calculator .mtzb-calc-volume-helper__grid { grid-template-columns: 1fr; }
  .mtzb-calculator .mtzb-result, .mtzb-calculator .mtzb-calc-result { position: static; }
  .mtzb-calculator .mtzb-air-inputs-combined, .mtzb-calculator .mtzb-recovery-outputs { grid-template-columns: 1fr; }
  .mtzb-calculator .mtzb-air-input-state + .mtzb-air-input-state { border-left: 0; border-top: 1px solid rgba(13,41,48,.12); }
  .mtzb-calculator .mtzb-recovery-outputs > .mtzb-air-card:first-of-type { border-radius: var(--mtzb-radius-md) var(--mtzb-radius-md) 0 0; }
  .mtzb-calculator .mtzb-recovery-outputs > .mtzb-air-card:last-of-type { border-left: 1px solid var(--mtzb-line); border-top: 0; border-radius: 0 0 var(--mtzb-radius-md) var(--mtzb-radius-md); }
  .mtzb-calculator .mtzb-recovery-machine { grid-template-columns: 1fr; padding-top: 8.5rem; padding-bottom: 4.5rem; }
  .mtzb-calculator .mtzb-stage { margin-top: 0; }
  .mtzb-calculator .mtzb-recovery-core { min-height: 20rem; margin-top: 2.8rem; }
  .mtzb-calculator .mtzb-recovery-stage-results { top: 7.2rem; flex-direction: column; align-items: center; gap: .15rem; }
  .mtzb-calculator .mtzb-unit-schematic { display: none; }
  .mtzb-calculator .mtzb-tooltip { right: -.5rem; left: auto; width: min(18rem,calc(100vw - 3rem)); }
  .mtzb-calculator .mtzb-tooltip::after { right: .8rem; left: auto; transform: none; }
  .mtzb-calculator .mtzb-recovery-summary { grid-template-columns: 1fr; }
  .mtzb-calculator .mtzb-season-picker { grid-template-columns: 1fr 1fr; }
  .mtzb-calculator .mtzb-season-picker small { grid-column: 1 / -1; margin: .2rem .2rem 0; }
  .mtzb-calculator .mtzb-recovery-summary > div { border-right: 0; border-bottom: 1px solid var(--mtzb-line); }
}
@media (prefers-reduced-motion: reduce) {
  .mtzb-calculator *, .mtzb-calculator *::before, .mtzb-calculator *::after { transition-duration: .01ms !important; }
}



@media (max-width: 980px) {
  .mtzb-calculator--hx .mtzb-hx-layout { grid-template-columns: 1fr; }
  .mtzb-calculator--hx .mtzb-hx-layout .mtzb-result { position: static; }
}
@media (max-width: 700px) {
  .mtzb-calculator--hx .mtzb-hx-toolbar, .mtzb-calculator--hx .mtzb-hx-section-head,
  .mtzb-calculator--hx .mtzb-hx-input-columns, .mtzb-calculator--hx .mtzb-hx-result-grid { grid-template-columns: 1fr; }
  .mtzb-calculator--hx .mtzb-hx-explorer-values { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .mtzb-calculator--hx .mtzb-hx-explorer-status { align-items: flex-start; flex-direction: column; }
}