.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.calc-head{padding-block:36px 28px}.calc-crumbs{display:flex;gap:8px;margin-bottom:12px;color:var(--muted);font-size:.94rem}.calc-crumbs a:hover{color:var(--blue)}.calc-head h1{font-size:clamp(2rem,3.6vw,2.8rem);font-weight:600}.calc-head p{max-width:760px;margin-top:10px;color:var(--muted);font-size:1.1rem}.calc-grid{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1fr);grid-gap:32px;gap:32px;align-items:start}.calc-panel{display:grid;grid-gap:26px;gap:26px;padding:28px;background:var(--warm);border-radius:16px}.calc-field{min-width:0;margin:0;padding:0;border:0}.calc-field-label{display:flex;align-items:center;gap:8px;margin-bottom:10px;padding:0;color:var(--ink);font-weight:600}.calc-hint{margin-top:8px;color:var(--muted);font-size:.92rem}.calc-from-project{padding:2px 10px;background:var(--tint);border-radius:999px;color:var(--blue-dark);font-size:.8rem}.calc-tip{position:relative;display:inline-flex}.calc-tip button{width:22px;height:22px;padding:0;background:#fff;border:1px solid var(--muted);border-radius:50%;color:var(--muted);font:inherit;font-size:.8rem;line-height:1;cursor:pointer}.calc-tip-note{position:absolute;z-index:5;top:30px;left:50%;width:min(260px,70vw);padding:10px 12px;background:var(--navy);border-radius:8px;color:#fff;font-size:.9rem;font-weight:400;line-height:1.4;transform:translateX(-50%);animation:calc-fade .15s ease}.calc-number{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:.92rem}.calc-location-box input,.calc-number input{width:100%;height:44px;padding:0 12px;background:#fff;border:1px solid var(--line);border-radius:8px;color:var(--ink);font:inherit}.calc-number input{width:84px;height:36px;text-align:center}.calc-location-box input:focus-visible,.calc-number input:focus-visible{outline:2px solid var(--blue);outline-offset:1px}.calc-slider{position:relative;padding:6px 18px 38px}.calc-slider input{display:block;width:100%;height:34px;margin:0;background:none;cursor:pointer;-moz-appearance:none;appearance:none;-webkit-appearance:none}.calc-slider input::-webkit-slider-runnable-track{height:18px;background:linear-gradient(90deg,#0b3fb3,var(--blue) 55%,#35a3ee) 0 0 /var(--fill) 100% no-repeat,#dfe3e8;border-radius:6px}.calc-slider input::-moz-range-track{height:18px;background:#dfe3e8;border-radius:6px}.calc-slider input::-moz-range-progress{height:18px;background:linear-gradient(90deg,#0b3fb3,var(--blue) 55%,#35a3ee);border-radius:6px}.calc-slider input::-webkit-slider-thumb{width:32px;height:32px;margin-top:-7px;background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:0 1px 3px rgba(7,26,51,.24);-webkit-transition:transform .1s ease;transition:transform .1s ease;-webkit-appearance:none}.calc-slider input::-moz-range-thumb{width:30px;height:30px;background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:0 1px 3px rgba(7,26,51,.24)}.calc-slider input:active::-webkit-slider-thumb{transform:scale(1.08)}.calc-slider input:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:8px}.calc-slider output{position:absolute;bottom:4px;left:clamp(40px,var(--fill),calc(100% - 40px));padding:3px 10px;background:#16204f;border-radius:6px;color:#fff;font-size:.92rem;font-weight:600;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;white-space:nowrap;transform:translateX(-50%)}.calc-slider-limits{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--muted);font-size:.9rem}.calc-stepper{display:inline-flex;align-items:center;gap:8px}.calc-stepper button{width:36px;height:36px;background:#fff;border:1px solid var(--line);border-radius:8px;color:var(--ink);font:inherit;font-size:1.2rem;cursor:pointer}.calc-stepper button:hover{border-color:var(--blue);color:var(--blue)}.calc-segmented>div{display:grid;grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;grid-gap:4px;gap:4px;padding:4px;background:#fff;border:1px solid var(--line);border-radius:10px}.calc-segmented input{position:absolute;opacity:0}.calc-segmented label span{display:block;padding:8px 0;border-radius:7px;color:var(--text);font-size:.94rem;font-weight:600;text-align:center;cursor:pointer;transition:background .15s ease,color .15s ease}.calc-segmented input:checked+span{background:var(--blue);color:#fff}.calc-segmented input:focus-visible+span{outline:2px solid var(--blue);outline-offset:2px}.calc-advanced summary,.calc-assumptions summary{color:var(--blue);font-weight:600;cursor:pointer}.calc-advanced>div{display:grid;grid-gap:22px;gap:22px;margin-top:18px;animation:calc-fade .18s ease}.calc-location-box{position:relative}.calc-location-box ul{position:absolute;z-index:6;top:48px;right:0;left:0;margin:0;padding:4px;background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:0 8px 24px rgba(7,26,51,.14);list-style:none}.calc-location-box li{padding:8px 10px;border-radius:6px;cursor:pointer}.calc-location-box li:hover,.calc-location-box li[aria-selected=true]{background:var(--tint)}.calc-link-button{margin-top:8px;padding:0;background:none;border:0;color:var(--blue);font:inherit;font-size:.94rem;font-weight:600;cursor:pointer}.calc-link-button:hover{text-decoration:underline}.calc-result{display:grid;grid-gap:20px;gap:20px;padding:28px;background:#fff;border:1px solid var(--line);border-radius:16px}.calc-result>h2{font-size:1.5rem;font-weight:600}.calc-summary{color:var(--ink);font-size:1.14rem}.calc-summary strong{color:var(--blue-dark)}.calc-stats{display:grid;grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;border:1px solid var(--line);border-radius:12px}.calc-stat{padding:16px 10px;text-align:center}.calc-stat+.calc-stat{border-left:1px solid var(--line)}.calc-stat span{display:block;color:var(--muted);font-size:.92rem}.calc-stat strong{display:block;margin-top:4px;color:var(--ink);font-size:1.5rem;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.calc-stat small{font-size:.9rem;font-weight:600}.calc-chart figcaption,.calc-range>p{margin-bottom:10px;color:var(--ink);font-weight:600}.calc-range-track{position:relative;height:8px;background:linear-gradient(90deg,#cfe0f5,var(--blue),#cfe0f5);border-radius:4px}.calc-range-track span{position:absolute;top:-4px;width:16px;height:16px;background:#fff;border:3px solid var(--blue-dark);border-radius:50%;transform:translateX(-50%);transition:left .22s ease}.calc-range-labels{display:flex;justify-content:space-between;gap:8px;margin-top:10px;color:var(--muted);font-size:.9rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.calc-range-labels strong{color:var(--ink)}.calc-chart{margin:0}.calc-bars{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));grid-gap:6px;gap:6px;height:170px}.calc-bars>div{display:grid;grid-template-rows:auto 1fr auto;min-width:0;text-align:center}.calc-bar{display:block;background:#9dc2ee;border-radius:4px 4px 0 0;transform-origin:bottom;transition:transform .22s ease}.is-best .calc-bar{background:var(--blue)}.calc-bar-value{overflow:hidden;color:var(--muted);font-size:.68rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.calc-bar-label{margin-top:4px;font-size:.76rem}.calc-bar-label,.calc-note{color:var(--muted)}.calc-losses{display:grid;grid-gap:10px;gap:10px;margin:0;padding:0;list-style:none;font-size:.94rem}.calc-losses li{display:grid;grid-template-columns:150px minmax(0,1fr) 120px;grid-gap:10px;gap:10px;align-items:center}.calc-losses li>span:last-child{color:var(--muted);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;text-align:right}.calc-loss-track{height:10px;overflow:hidden;background:var(--warm);border-radius:5px}.calc-loss-track span{display:block;height:100%;background:#f0a63c;border-radius:5px;transform-origin:left;transition:transform .22s ease}.is-kept .calc-loss-track span{background:var(--blue)}.calc-callout{padding:12px 14px;background:var(--tint);border-left:4px solid var(--blue);border-radius:6px;animation:calc-fade .15s ease}.calc-callout-warning{background:#fff6e5;border-color:#e39a12}.calc-callout-stop{background:#fdecec;border-color:#c9302c}.calc-callout p{margin-top:2px;color:var(--text);font-size:.96rem}.calc-assumptions dl{display:grid;grid-gap:8px;gap:8px;margin:12px 0 0}.calc-assumptions dl>div{display:flex;justify-content:space-between;gap:16px;font-size:.94rem}.calc-assumptions dt{color:var(--muted)}.calc-assumptions dd{margin:0;color:var(--ink);text-align:right}.calc-report{display:flex;flex-wrap:wrap;gap:10px}.calc-button-secondary{padding:10px 18px;background:#fff;border:1px solid var(--blue);border-radius:8px;color:var(--blue);font:inherit;font-weight:600;cursor:pointer;transition:background .15s ease,color .15s ease}.calc-button-secondary:hover:not(:disabled){background:var(--blue);color:#fff}.calc-button-secondary:disabled{opacity:.5;cursor:not-allowed}.calc-compare{margin-top:32px;padding:24px 28px;background:var(--warm);border-radius:16px}.calc-compare-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}.calc-compare h2{font-size:1.4rem;font-weight:600}.calc-compare p{color:var(--muted)}.calc-table-scroll{margin-top:16px;overflow-x:auto}.calc-compare table{width:100%;border-collapse:collapse;background:#fff;border-radius:10px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.calc-compare td,.calc-compare th{padding:10px 14px;border-bottom:1px solid var(--line);font-weight:400;text-align:left;white-space:nowrap}.calc-compare thead th{color:var(--ink);font-weight:600}.calc-compare th button{margin-left:6px;padding:0 4px;background:none;border:0;color:var(--muted);font:inherit;cursor:pointer}.calc-prose{display:grid;grid-gap:36px;gap:36px;max-width:860px;margin-inline:auto;padding-block:56px 72px}.calc-prose h2{margin-bottom:12px;font-size:1.6rem;font-weight:600}.calc-prose h3{margin-top:16px;font-size:1.14rem;font-weight:600}.calc-prose p{margin-top:8px}.calc-formula{padding:12px 14px;background:var(--warm);border-radius:8px;color:var(--ink);font-weight:600}.calc-guidance{display:grid;grid-gap:24px;gap:24px}.calc-guidance h2{font-size:1.3rem}.calc-guidance ul{margin:0;padding-left:20px}.calc-guidance li+li{margin-top:6px}.calc-faq{padding-block:12px;border-bottom:1px solid var(--line)}.calc-faq summary{color:var(--ink);font-weight:600;cursor:pointer}.calc-related>div{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:12px;gap:12px}.calc-related span,.calc-related strong{display:block}.calc-related>div>*{padding:16px;background:var(--warm);border-radius:10px}.calc-related span{margin-top:2px;color:var(--muted);font-size:.94rem}.calc-related a:hover{background:var(--tint)}.calc-sources{color:var(--muted);font-size:.92rem}.calc-sources a{color:var(--blue)}.calc-hub{display:grid;grid-gap:40px;gap:40px;padding-bottom:72px}.calc-hub h2{margin-bottom:14px;font-size:1.5rem;font-weight:600}.calc-hub-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:12px;gap:12px}.calc-hub-card{display:block;padding:20px;background:var(--warm);border-radius:10px;color:var(--ink);transition:background .15s ease}a.calc-hub-card:hover{background:var(--tint)}.calc-hub-card h3{font-size:1.12rem;font-weight:600}.calc-hub-card p{margin-top:4px;color:var(--muted);font-size:.96rem}.calc-hub-card>span{display:block;margin-top:10px;color:var(--muted);font-size:.9rem;font-weight:600}a.calc-hub-card>span{color:var(--blue)}.calc-sticky{display:none}@keyframes calc-fade{0%{opacity:0}}@media (max-width:960px){.calc-grid,.calc-hub-grid{grid-template-columns:minmax(0,1fr)}.calc-hub-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.calc-sticky{position:fixed;z-index:20;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;background:var(--navy);color:#fff}.calc-sticky strong{font-size:1.1rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.calc-page{padding-bottom:48px}}@media (max-width:640px){.calc-compare,.calc-panel,.calc-result{padding:18px}.calc-hub-grid,.calc-related>div{grid-template-columns:minmax(0,1fr)}.calc-bar-value{display:none}.calc-stat strong{font-size:1.2rem}.calc-losses li{grid-template-columns:minmax(0,1fr) auto}.calc-loss-track{grid-column:1/-1;grid-row:2}}@media (prefers-reduced-motion:reduce){.calc-page *,.calc-page :before{animation:none!important;transition:none!important}}@media print{.calc-compare button,.calc-crumbs,.calc-link-button,.calc-related,.calc-report,.calc-sticky,.calc-tip,.site-footer,.site-header,.top-strip{display:none!important}.calc-grid{grid-template-columns:minmax(0,1fr)}.calc-panel,.calc-result{padding:0;background:none;border:0;page-break-inside:avoid;break-inside:avoid}.calc-advanced>div,.calc-assumptions dl{display:grid!important}}.calc-curve{display:block;width:100%;height:170px}.calc-curve-axis{position:relative;height:18px;margin-top:4px;color:var(--muted);font-size:.76rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.calc-curve-axis span{position:absolute;white-space:nowrap;transform:translateX(-50%)}.calc-curve-axis span:first-child{transform:none}.calc-legend{display:flex;flex-wrap:wrap;gap:6px 16px;margin:8px 0 0;padding:0;color:var(--muted);font-size:.88rem;list-style:none}.calc-legend li{display:flex;align-items:center;gap:6px}.calc-legend span{width:12px;height:12px;border-radius:3px}.calc-scene{display:grid;grid-gap:16px;gap:16px;margin-top:32px;padding:24px 28px;background:#fff;border:1px solid var(--line);border-radius:16px}.calc-result .calc-scene{margin-top:0;padding:0;border:0}.calc-scene h3{font-size:1.3rem;font-weight:600}.calc-scene>svg{display:block;width:100%;max-width:720px;height:auto;margin-inline:auto}.calc-scene-text{fill:var(--muted);font-size:13px;font-weight:700}.calc-scene-controls{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;grid-gap:16px 24px;gap:16px 24px;align-items:end}.calc-scene-controls label{display:grid;grid-gap:6px;gap:6px;color:var(--muted);font-size:.94rem}.calc-scene-controls strong{color:var(--ink);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.calc-scene-controls input{width:100%;accent-color:var(--blue)}.calc-scene-stats{display:grid;grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;margin:0;background:var(--warm);border-radius:10px}.calc-scene-stats>div{padding:12px;text-align:center}.calc-scene-stats dt{color:var(--muted);font-size:.88rem}.calc-scene-stats dd{margin:2px 0 0;color:var(--ink);font-size:1.14rem;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.calc-inline{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:18px;gap:18px}.calc-table{width:100%;border-collapse:collapse;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.calc-table td,.calc-table th{padding:8px 6px;border-bottom:1px solid var(--line);font-weight:400;text-align:left}.calc-table td:last-child,.calc-table th:last-child{text-align:right}.calc-table tfoot td,.calc-table tfoot th{color:var(--ink);font-weight:700}.calc-pill{display:inline-block;padding:3px 12px;border-radius:999px;font-size:.9rem;font-weight:700}.calc-pill-good{background:#e4f4e8;color:#17663a}.calc-pill-fair{background:#fff1d6;color:#8a5a00}.calc-pill-poor{background:#fde7e6;color:#a12622}.calc-checks{display:grid;grid-gap:8px;gap:8px;margin:0;padding:0;list-style:none}.calc-checks li{display:grid;grid-template-columns:22px minmax(0,1fr);grid-gap:8px;gap:8px;align-items:start}.calc-checks li>span:first-child{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;color:#fff;font-size:.78rem;font-weight:700}.calc-check-pass>span:first-child{background:#1f8a4c}.calc-check-warn>span:first-child{background:#e39a12}.calc-check-fail>span:first-child{background:#c9302c}.calc-checks small{display:block;color:var(--muted);font-size:.9rem}.calc-disclaimer{padding:10px 14px;background:#fff6e5;border-left:4px solid #e39a12;border-radius:6px;color:var(--ink);font-size:.96rem;font-weight:600}@media (max-width:640px){.calc-scene{padding:18px}.calc-inline,.calc-scene-controls{grid-template-columns:minmax(0,1fr)}}.calc-stack{display:flex;gap:2px;height:22px;overflow:hidden;border-radius:6px}.calc-stack span{flex-basis:0;min-width:3px;transition:flex-grow .22s ease}.calc-stack-list{display:grid;grid-gap:6px;gap:6px;margin:10px 0 0;padding:0;font-size:.94rem;list-style:none}.calc-stack-list li{display:flex;align-items:center;gap:8px}.calc-stack-list span{flex:none;width:12px;height:12px;border-radius:3px}.calc-stack-list strong{margin-left:auto;color:var(--ink);font-weight:600;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.calc-roof{display:block;width:100%;height:auto}.calc-roof-panel{transition:fill .18s ease,fill-opacity .18s ease}.calc-quotes{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:16px;gap:16px;margin-block:20px}.calc-quotes .calc-panel{gap:12px;padding:20px}.calc-quote-field{display:grid;grid-gap:4px;gap:4px;color:var(--muted);font-size:.92rem}.calc-quote-field input{width:100%;height:40px;padding:0 10px;background:#fff;border:1px solid var(--line);border-radius:8px;color:var(--ink);font:inherit}.calc-quote-check{display:flex;gap:8px;align-items:center;font-size:.94rem}.calc-quote-check input{width:18px;height:18px;accent-color:var(--blue)}.calc-result-wide{margin-top:8px}.calc-result-wide h3{font-size:1.2rem;font-weight:600}.calc-result-wide ul{margin:6px 0 0;padding-left:20px}.calc-appliances{display:grid;grid-gap:12px;gap:12px}.calc-cables{display:grid;grid-template-columns:repeat(auto-fit,minmax(112px,1fr));grid-gap:10px;gap:10px}.calc-cable{display:grid;grid-gap:4px;gap:4px;justify-items:center;padding:12px 8px;background:#fff;border:1px solid var(--line);border-radius:10px;font-size:.88rem;text-align:center}.calc-cable svg{width:44px;height:44px}.calc-cable-chosen{border-color:var(--blue);box-shadow:inset 0 0 0 1px var(--blue)}.calc-pass{color:#1b6b40}.calc-fail{color:#a12a21}.calc-engineering-note{margin:0 0 18px;padding:12px 16px;background:#fdf1e3;border-left:3px solid #d9622b;border-radius:6px;color:#5e3711}@media (min-width:900px){.calc-result-sticky{position:-webkit-sticky;position:sticky;top:96px;align-self:start}.calc-appliances{grid-template-columns:repeat(2,minmax(0,1fr))}.calc-appliances>strong{grid-column:1/-1}}table.sr-only{display:block}.calc-jump{display:inline-flex;gap:8px;align-items:center;justify-content:center;width:100%;min-height:46px;padding:0 18px;background:#e9f2fc;border:1px solid #c6dcf4;border-radius:10px;color:var(--blue);font:inherit;font-weight:600;cursor:pointer;transition:background .16s ease}.calc-jump:hover{background:#dcebfa}.calc-jump svg{animation:calc-jump-nudge 1.8s ease-in-out infinite}@keyframes calc-jump-nudge{0%,to{transform:translateY(-1px)}50%{transform:translateY(3px)}}.calc-roof-plan{display:block;width:100%;max-width:720px;height:auto;margin-inline:auto}.calc-roof-object{outline:none;cursor:-webkit-grab;cursor:grab;touch-action:none}.calc-roof-object:active{cursor:-webkit-grabbing;cursor:grabbing}.calc-roof-object:focus-visible{filter:drop-shadow(0 0 3px #005fbe)}.calc-roof-tools{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:center;color:var(--muted)}.calc-roof-editor{display:grid;grid-gap:14px;gap:14px;padding:16px;background:var(--warm);border-radius:10px}@media (prefers-reduced-motion:reduce){.calc-jump svg{animation:none}}@media print{.calc-jump,.calc-roof-editor,.calc-roof-tools{display:none}}@media (max-width:480px){.calc-table td,.calc-table th{padding-inline:5px;font-size:.82rem}}