@charset "UTF-8";
:root{--paper:#f6f5ef;--panel:#fffefa;--ink:#252d28;--muted:#556258;--line:#dce1d8;--green:#294f3a;--green-dark:#173627;--lime:#d7ef90;--purple:#665687;--error:#a22d26;--focus:#1e6953;--radius:1.25rem;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;color:var(--ink);background:var(--paper);font-synthesis:none;-webkit-font-smoothing:antialiased}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button,a,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}a{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--focus);outline-offset:4px}input:focus-visible,select:focus-visible{outline-offset:1px}button{border:0}h1,h2,h3,p{margin:0}[hidden]{display:none!important}.site-shell{width:min(1200px,100% - 80px);margin:auto}.skip-link{position:absolute;z-index:20;top:-90px;left:20px;background:var(--green-dark);color:white;padding:12px 20px;border-radius:8px}.skip-link:focus{top:16px}.site-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:31px 0 25px;border-bottom:1px solid var(--line)}.wordmark{display:flex;align-items:center;gap:12px;text-decoration:none;font-size:1.25rem;font-weight:750;letter-spacing:-.6px}.brand-mark{position:relative;display:flex;align-items:center;justify-content:center;background:var(--green);color:var(--lime);width:42px;height:42px;border-radius:12px;font-size:2rem;line-height:1;font-weight:750;padding-bottom:5px}.brand-mark>span{position:absolute;right:4px;top:3px;font-size:.85rem}.brand-subtitle{display:block;margin-top:4px;font-size:.64rem;font-weight:500;letter-spacing:.05em;color:var(--muted)}.header-actions{display:flex;align-items:center;gap:15px}.beta-badge{font-size:.61rem;letter-spacing:.1em;font-weight:750;color:var(--green);background:#e8edde;border:1px solid #d6dfc9;padding:5px 8px;border-radius:5px}.language-button{height:44px;min-width:54px;background:transparent;border-radius:8px;color:var(--ink);font-size:.79rem;font-weight:700}.language-button>span{margin-left:5px;color:var(--muted)}.language-button:hover{background:#e9ece3}.intro{padding:58px 0 40px;max-width:720px}.eyebrow{display:flex;align-items:center;gap:10px;font-size:.68rem;letter-spacing:.14em;font-weight:750;color:var(--green)}.small-spark{font-size:1.4rem;line-height:1}h1{font-size:clamp(2.6rem,5.1vw,4.4rem);line-height:1.04;letter-spacing:-.055em;font-weight:650;margin:20px 0 22px}h1 br{display:block}.intro-description{font-size:1.03rem;line-height:1.65;color:var(--muted);max-width:570px}.intro-facts{display:flex;flex-wrap:wrap;gap:22px;margin-top:22px;font-size:.74rem;color:var(--green)}.intro-facts>span{display:flex;align-items:center;gap:7px}.local-dot{width:6px;height:6px;display:inline-block;border-radius:100%;background:#719251}.workspace{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.9fr);gap:24px;align-items:start}.input-panel{padding:28px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 4px 12px #273e1d03}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:12px}.section-kicker{font-size:.63rem;letter-spacing:.13em;color:var(--muted);font-weight:700;margin-bottom:9px}h2{font-size:1.5rem;font-weight:630;line-height:1.18;letter-spacing:-.04em}.edit-icon{font-size:1.6rem;color:#869080}.sample-note{margin:18px 0 22px;font-size:.71rem;color:var(--muted);line-height:1.5;border-left:2px solid #bbc9aa;padding-left:10px}.shared-settings{display:grid;grid-template-columns:1fr 1.25fr;gap:17px;padding-bottom:21px;margin-bottom:22px;border-bottom:1px solid var(--line)}.field label{display:block;font-size:.74rem;font-weight:650;line-height:1.4;margin-bottom:7px}.field input,.field select{width:100%;min-width:0;height:46px;border:1px solid #d6ddd2;background:white;color:var(--ink);border-radius:8px;padding:10px 12px;font-size:.92rem;transition:border-color .15s}.field select{padding-right:20px}.field input:hover,.field select:hover{border-color:#a4b19f}.field input[aria-invalid=true]{border-color:var(--error);background:#fff8f6}.field-hint{font-size:.63rem;color:var(--muted);line-height:1.45;margin-top:7px}.input-with-unit{display:flex;align-items:center;position:relative;min-width:0}.input-with-unit input{padding-right:49px}.input-with-unit>span{position:absolute;right:11px;pointer-events:none;color:var(--muted);font-size:.71rem;white-space:nowrap}.price-input input{padding-right:87px}.price-input>span{font-size:.65rem}.scenario-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.scenario{margin:0;padding:0;border:0;min-width:0}.scenario legend{display:flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;width:100%;margin:0 0 20px;padding:0}.scenario-letter{display:flex;align-items:center;justify-content:center;width:27px;height:27px;border-radius:8px;background:#e9efdc;color:var(--green);font-size:.76rem;font-weight:750;flex-shrink:0}.scenario-b .scenario-letter{background:#eeebf6;color:var(--purple)}.scenario .field{margin-bottom:16px}.scenario-a input{border-color:#d5decf}.scenario-b input{border-color:#ddd9e7}.price-help{font-size:.68rem;line-height:1.55;color:var(--muted);margin:3px 0 22px;max-width:440px}.calculate-button{width:100%;min-height:52px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 18px;border-radius:10px;background:var(--green);color:white;font-size:.86rem;font-weight:650;box-shadow:0 3px 7px #193c2020}.calculate-button>span:last-child{font-size:1.4rem;font-weight:400}.calculate-button:hover{background:#1c3e2c}.calculate-button:active{transform:translateY(1px)}.form-secondary{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:8px 0 -11px}.text-button{padding:12px 0;min-height:44px;font-size:.71rem;color:var(--green);background:transparent;border-radius:4px;text-decoration:underline;text-decoration-color:#a9b59f;text-underline-offset:4px}.text-button.quiet{color:var(--muted);text-decoration:none}.text-button:hover{text-decoration:underline}.field-error{font-size:.69rem;color:var(--error);line-height:1.45;margin-top:7px}.form-error{background:#fff0e9;border:1px solid #ebc4b5;color:var(--error);padding:10px 12px;border-radius:8px;font-size:.75rem;line-height:1.5;margin-bottom:14px}.results-panel{background:#ecefe5;border:1px solid #dde3d5;border-radius:var(--radius);padding:27px 26px 18px;min-width:0}.result-spark{font-size:2.3rem;font-weight:400;color:#72905c;line-height:1}.result-empty{padding:46px 16px 39px;text-align:center;color:var(--muted)}.empty-bars{display:grid;grid-template-columns:24px 1fr;gap:12px;align-items:center;max-width:180px;margin:0 auto 28px;font-size:.74rem;font-weight:700;color:var(--green)}.empty-bars i{height:19px;border-radius:4px;background:#cedabc}.empty-bars i:last-child{width:63%;background:#d6d0e3}.empty-bars span:nth-of-type(2){color:var(--purple)}.result-empty h3{font-size:1.3rem;color:var(--ink);font-weight:600;letter-spacing:-.03em}.result-empty p{margin-top:12px;font-size:.82rem;line-height:1.7;max-width:275px;margin-inline:auto}.formula-chip{display:inline-block;background:#f7f8f3;border:1px solid #dfe4d5;border-radius:6px;padding:8px 10px;font-size:.67rem;margin-top:28px;line-height:1.7}.difference-card{margin-top:22px;padding:24px 22px 23px;background:var(--green-dark);color:#fff;border-radius:13px;min-width:0}.result-period{font-size:.69rem;color:#c3d0bb;line-height:1.5}.difference-amount{font-size:clamp(1.85rem,3.1vw,3rem);font-weight:600;line-height:1.16;letter-spacing:-.045em;margin:12px 0;color:var(--lime);overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.difference-label{font-size:.91rem;line-height:1.5;font-weight:550;overflow-wrap:anywhere}.difference-note{font-size:.65rem;color:#b9c9b1;line-height:1.5;border-top:1px solid #446044;margin-top:17px;padding-top:12px}.comparison-results{margin-top:18px}.result-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px}.result-device{min-width:0;background:#f9faf6;border:1px solid #d9e1d0;padding:16px 13px 13px;border-radius:10px}.result-device-heading{display:flex;align-items:flex-start;gap:7px}.result-device-heading .scenario-letter{width:22px;height:22px;border-radius:6px;font-size:.67rem}.result-device h3{font-size:.78rem;font-weight:650;line-height:1.45;overflow-wrap:anywhere;padding-top:1px}.result-device:nth-child(2) .scenario-letter{background:#eeeaf4;color:var(--purple)}.result-cost{font-size:1.3rem;font-weight:650;letter-spacing:-.045em;line-height:1.3;margin:14px 0 2px;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.result-cost-caption{font-size:.62rem;color:var(--muted);line-height:1.4}.result-device dl{margin:14px 0 0;font-size:.65rem;line-height:1.45}.result-device dl>div{padding:7px 0;border-top:1px solid #e1e5db}.result-device dt{color:var(--muted)}.result-device dd{margin:2px 0 0;font-weight:600;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.rounding-note{font-size:.61rem;color:var(--muted);line-height:1.5;margin:10px 2px 18px}.result-actions{display:grid;grid-template-columns:1fr 1fr;gap:9px}.share-button,.download-button{min-height:44px;padding:11px 10px;border:1px solid #cbd5c1;border-radius:8px;color:var(--green);background:#f8faf3;font-size:.71rem;font-weight:650;display:flex;align-items:center;justify-content:center;gap:6px;line-height:1.4}.share-button{grid-column:1/-1;border-color:var(--green);background:var(--green);color:white}.share-button:hover{background:var(--green-dark)}.download-button:hover{background:white;border-color:#7c9270}.share-note{font-size:.62rem;line-height:1.6;color:var(--muted);margin:13px 1px 0}.action-status{font-size:.74rem;line-height:1.5;color:var(--green);margin:13px 0 0;overflow-wrap:anywhere}.action-status:empty{margin:0}.copy-fallback{margin-top:14px}.copy-fallback label{display:block;font-size:.71rem;font-weight:650;margin-bottom:8px}.copy-fallback input{width:100%;min-width:0;border:1px solid #9caf94;border-radius:6px;padding:10px;font-size:.75rem;color:var(--ink);background:white}.how-it-works{display:grid;grid-template-columns:.7fr 1.4fr;gap:45px;padding:47px 2px 34px;align-items:start}.how-it-works h2{font-size:1.8rem;line-height:1.16}.explanation p{font-size:.84rem;line-height:1.75;color:#4b584d}.explanation p.assumptions{font-size:.72rem;line-height:1.7;color:var(--muted);margin-top:13px}.information-grid{display:grid;grid-template-columns:1fr 1fr;gap:25px;padding-bottom:34px}.information-grid details{border-top:1px solid var(--line);border-bottom:1px solid var(--line);min-width:0}.information-grid summary{cursor:pointer;min-height:54px;padding:17px 5px;font-size:.78rem;font-weight:650;line-height:1.5}.details-content{padding:0 5px 19px}.details-content p{font-size:.73rem;line-height:1.75;color:var(--muted)}.details-content p+p{margin-top:10px}.site-footer{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;padding:19px 0 28px;font-size:.65rem;line-height:1.7;color:var(--muted)}.footer-separator{color:#a3ada0;margin:0 6px}.noscript-note{padding:20px;text-align:center;background:#fff3e7;color:#7b3c12}
@media(min-width:1100px){.results-panel{position:sticky;top:24px}}
@media(max-width:900px){.site-shell{width:min(100% - 44px,760px)}.workspace{grid-template-columns:1fr}.intro{padding-top:40px;max-width:580px}h1{font-size:3.7rem}.results-panel{padding:25px}.result-empty{padding-top:35px;padding-bottom:28px}.difference-amount{font-size:3rem}.result-device{padding:17px}.result-cost{font-size:1.8rem}.result-device dl>div{display:flex;justify-content:space-between;gap:10px}.result-device dd{margin:0}.how-it-works{gap:30px;padding-top:36px}}
@media(max-width:500px){.site-shell{width:calc(100% - 32px)}.site-header{padding:20px 0}.wordmark{font-size:1.12rem;gap:9px}.brand-mark{width:35px;height:35px;font-size:1.75rem;border-radius:10px}.brand-subtitle{font-size:.52rem}.header-actions{gap:5px}.beta-badge{font-size:.54rem;padding:4px 6px}.language-button{min-width:44px;font-size:.72rem}.intro{padding:35px 0 28px}h1{font-size:2.72rem;margin:18px 0 17px}.intro-description{font-size:.88rem;line-height:1.65}.eyebrow{font-size:.6rem;letter-spacing:.12em}.intro-facts{font-size:.64rem;gap:16px;margin-top:18px}.workspace{gap:18px}.input-panel{padding:21px 17px 18px;border-radius:15px}.section-kicker{font-size:.56rem;letter-spacing:.11em;margin-bottom:8px}h2{font-size:1.34rem}.sample-note{font-size:.64rem;margin:15px 0 20px}.shared-settings{gap:13px;grid-template-columns:1fr 1.25fr;padding-bottom:18px;margin-bottom:20px}.field label{font-size:.7rem}.field input,.field select{font-size:1rem;padding-left:10px;height:46px}.field select{font-size:.76rem;padding-left:9px;padding-right:15px}.field-hint{font-size:.59rem}.scenario-grid{gap:13px}.scenario legend{font-size:.7rem;gap:6px;line-height:1.4;align-items:center;margin-bottom:16px}.scenario-letter{width:25px;height:25px;border-radius:7px;font-size:.7rem}.scenario .field{margin-bottom:14px}.scenario .field label{font-size:.65rem}.price-input input{padding-right:67px}.price-input>span{font-size:.54rem;right:8px}.input-with-unit>span{font-size:.65rem;right:8px}.input-with-unit.price-input>span{font-size:.54rem}.price-help{font-size:.64rem;margin:5px 0 18px}.results-panel{padding:22px 17px 17px;border-radius:15px}.difference-card{padding:21px 18px;margin-top:19px}.difference-amount{font-size:2.45rem}.difference-label{font-size:.84rem}.result-device{padding:13px 10px}.result-device h3{font-size:.71rem}.result-device-heading{gap:6px}.result-cost{font-size:1.39rem}.result-device dl>div{display:block}.result-device dd{margin-top:3px}.result-actions{gap:8px}.download-button,.share-button{font-size:.67rem;padding:11px 7px}.how-it-works{grid-template-columns:1fr;gap:18px;padding:31px 2px 26px}.how-it-works h2{font-size:1.65rem}.how-it-works h2 br{display:none}.explanation p{font-size:.8rem}.explanation p.assumptions{font-size:.7rem}.information-grid{grid-template-columns:1fr;gap:0;padding-bottom:20px}.information-grid details+details{border-top:0}.information-grid summary{font-size:.76rem}.site-footer{flex-direction:column;gap:4px;font-size:.62rem;padding-bottom:24px}.result-empty{padding:31px 12px}.result-empty p{font-size:.79rem}}
@media(max-width:340px){.site-shell{width:calc(100% - 24px)}h1{font-size:2.35rem}.input-panel,.results-panel{padding:18px 13px}.scenario-grid{grid-template-columns:1fr;gap:10px}.scenario-b{border-top:1px solid var(--line);padding-top:19px}.shared-settings{grid-template-columns:1fr}.scenario legend{font-size:.8rem}.scenario .field label{font-size:.75rem}.result-row{grid-template-columns:1fr}.result-actions{grid-template-columns:1fr}.brand-subtitle{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}.calculate-button:active{transform:none}}
@media print{body{background:white}.site-shell{width:100%;max-width:none}.site-header,.intro,.input-panel,.result-actions,.share-note,.information-grid,.form-secondary,.action-status,.site-footer,.copy-fallback{display:none!important}.workspace{display:block}.results-panel{position:static;background:white;border:0}.how-it-works{padding:20px 0}.difference-card{print-color-adjust:exact;-webkit-print-color-adjust:exact}}

h1,#how-title{white-space:pre-line}

@media(max-width:500px){.field label,.scenario .field label,.scenario legend{font-size:.75rem}.sample-note,.field-hint,.price-help,.share-note,.rounding-note,.difference-note,.result-cost-caption,.result-device dl{font-size:.75rem}.input-with-unit.price-input>span{font-size:.625rem}.price-input input{padding-right:77px}.result-actions .download-button,.result-actions .share-button{font-size:.75rem}.details-content p{font-size:.75rem}.result-device h3{font-size:.78rem}.input-with-unit>span{font-size:.75rem}.result-device dl>div{padding-block:8px}}
/* Locale guidance, optional measurement and accessible feedback. */
a.language-button{text-decoration:none;display:inline-flex;align-items:center;gap:.4rem}.rate-choice{max-width:28rem;margin-bottom:1.4rem}.launch-guide,.usage-notice{margin:2rem 0;padding:1.5rem;border:1px solid var(--line,#d9ded5);border-radius:1rem;background:#fff}.launch-guide h2,.usage-notice h2{font-size:1.5rem}.launch-guide p,.usage-notice p{line-height:1.65}.article{max-width:52rem;margin:2rem auto}.article h1{font-size:clamp(2rem,5vw,3.5rem);line-height:1.12}.article h2{margin-top:2rem}.article p{line-height:1.75}.article a,.launch-guide a,.usage-notice a{color:#294f3a;text-underline-offset:.2em}.article .calculate-button{color:#fff;text-decoration:none;display:inline-flex;justify-content:center;padding:1rem;white-space:normal}.article form{max-width:36rem;background:#fff;padding:1.5rem;border:1px solid #d9ded5;border-radius:1rem}.article label{display:block;margin-bottom:.7rem}.article select{width:100%;margin-bottom:1rem}.site-footer{flex-wrap:wrap;gap:1rem}a:focus-visible,button:focus-visible,select:focus-visible{outline:3px solid #366947;outline-offset:4px}.usage-notice button{white-space:normal;text-align:left}.intro h1{font-size:clamp(2.3rem,5vw,4.2rem)}@media(max-width:500px){.launch-guide,.usage-notice{padding:1rem}.site-header{gap:.6rem}.article form{padding:1rem}}