:root{color-scheme:light;--cream:#f6f3eb;--paper:#fffdf7;--pine:#243c33;--green:#506a58;--sage:#dce3d8;--muted:#56625c;--ochre:#a16a3b;--line:#d7dbd0;--error:#8a3829;font-family:Arial,Helvetica,sans-serif;color:var(--pine);background:var(--cream)}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}a{color:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button,a,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.55}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--ochre);outline-offset:5px}input:focus-visible{outline:2px solid var(--green);outline-offset:2px}button{border:0}.wrap{width:min(1160px,calc(100% - 64px));margin-inline:auto}.skip{position:absolute;left:20px;top:-60px;z-index:10;padding:12px;background:var(--pine);color:white}.skip:focus{top:12px}.site-header{min-height:112px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.brand{display:flex;gap:13px;align-items:center;text-decoration:none;font-family:Georgia,serif;font-size:21px}.brand img{flex:none}.brand small{display:block;font-family:Arial,sans-serif;font-size:11px;letter-spacing:.045em;color:var(--muted);margin-top:6px}.header-link,.text-link{font-size:13px;text-underline-offset:5px}.header-link{white-space:nowrap}.intro{padding:62px 0 38px}.eyebrow{font-size:10px;font-weight:700;letter-spacing:.15em;line-height:1.5;margin:0 0 14px;color:var(--green)}h1,h2{font-family:Georgia,'Times New Roman',serif;font-weight:400;letter-spacing:-.035em}h1{font-size:clamp(42px,5.4vw,68px);line-height:1.05;margin:0 0 26px;max-width:790px}h2{font-size:30px;line-height:1.16;margin:0}.intro-bottom{display:flex;justify-content:space-between;align-items:flex-end;gap:24px}.intro-bottom p{font-size:16px;line-height:1.65;color:var(--muted);margin:0}.text-link{flex-shrink:0;line-height:1.7}.calculator{display:grid;grid-template-columns:minmax(0,1.37fr) minmax(0,1fr);border:1px solid var(--line);background:var(--paper)}form{padding:32px}.panel-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:25px}.panel-heading h2{font-size:27px}.panel-heading .eyebrow{margin-bottom:10px}.badge{background:var(--sage);color:var(--pine);font-size:10px;padding:7px 10px;white-space:nowrap;line-height:1.3;border-radius:3px}.product-field{margin-bottom:22px}.product-field label,.field label{display:block;font-size:13px;font-weight:700;line-height:1.5}.optional{font-size:10px;font-weight:400;color:var(--muted);margin-left:4px}.product-field input{margin-top:8px;width:100%;height:44px;font-size:14px}.fields{display:grid;grid-template-columns:1fr 1fr;gap:21px 20px}.field-help{font-size:11px;line-height:1.5;color:var(--muted);margin:5px 0 9px;min-height:33px}input{background:#fff;border:1px solid #b9c2b5;border-radius:3px;color:var(--pine);padding:10px 12px;width:100%;min-width:0;box-shadow:none}.field input{height:48px;font-size:20px;font-variant-numeric:tabular-nums}.field-error{font-size:11px;color:var(--error);line-height:1.45;margin:6px 0 0}.field-error:empty{display:none}input[aria-invalid="true"]{border:2px solid var(--error)}.stock-error{font-size:12px;line-height:1.55;border-left:3px solid var(--error);padding:8px 12px;color:var(--error);margin:20px 0 0}.form-actions{display:flex;align-items:center;gap:20px;margin-top:26px;flex-wrap:wrap}.button{padding:13px 17px;display:inline-flex;align-items:center;justify-content:center;gap:14px;min-height:44px;font-size:12px;font-weight:700;text-decoration:none;border-radius:3px;line-height:1.5}.secondary{border:1px solid var(--pine);color:var(--pine);background:transparent}.secondary:hover{background:var(--sage)}.text-button{background:none;color:var(--pine);padding:10px 0;font-size:11px;text-decoration:underline;text-underline-offset:4px;min-height:44px}.privacy-note{font-size:10px;line-height:1.6;color:var(--muted);margin:17px 0 0;max-width:430px}.result-panel{background:var(--pine);color:var(--cream);padding:33px 32px;display:flex;flex-direction:column}.result-panel .eyebrow{color:#becbbd;margin-bottom:24px}.result-panel h2{font-family:Arial,sans-serif;font-size:14px;font-weight:400;letter-spacing:0}.result-number{font-family:Georgia,serif;letter-spacing:-.04em;font-size:112px;font-weight:400;line-height:1;margin:17px 0 5px;font-variant-numeric:lining-nums tabular-nums;overflow-wrap:anywhere}.result-number.long{font-size:70px}.result-unit{color:#d9e1d5;font-size:12px;margin:0 0 24px}.equation{font-size:12px;line-height:1.8;color:#d9e1d5;border-top:1px solid #5c7262;padding-top:18px;margin:0 0 24px;font-variant-numeric:tabular-nums}.difference-box{padding:18px 20px;background:#354d3e;border:1px solid #718272;display:grid;grid-template-columns:1fr auto;gap:9px 12px;align-items:center}.difference-box span{font-size:11px;line-height:1.5;max-width:160px}.difference-box strong{font-family:Georgia,serif;font-weight:400;font-size:36px;line-height:1.2;font-variant-numeric:tabular-nums}.difference-box p{grid-column:1/-1;font-size:13px;line-height:1.55;margin:0}.difference-box[data-status="short"],.difference-box[data-status="over"]{background:#f0e7d3;color:var(--pine);border-color:#f0e7d3}.difference-box[data-status="invalid"]{background:#f5ddd4;color:#6e291e;border-color:#f5ddd4}.next-step{font-size:12px;line-height:1.75;color:#d9e1d5;margin:16px 0 24px}.result-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:auto}.light{background:var(--cream);color:var(--pine)}.light:hover{background:var(--sage)}.light-text{color:var(--cream)}.copy-status{font-size:11px;line-height:1.5;color:#d9e1d5;margin:8px 0;min-height:17px}.result-footnote{font-size:10px;line-height:1.7;color:#c2cebf;margin:14px 0 0}.explanation{display:grid;grid-template-columns:1fr 1.3fr;gap:60px;padding:64px 30px;border-bottom:1px solid var(--line)}.explanation h2{font-size:36px}.rule-copy p{font-size:14px;line-height:1.75;margin:0 0 14px}.rule-copy p:last-child{margin:0}.muted{color:var(--muted)}.companion{display:grid;grid-template-columns:1.3fr 1fr;gap:72px;padding:64px 30px 66px;border-bottom:1px solid var(--line);align-items:center}.companion h2{font-size:42px}.companion-copy>p:not(.eyebrow):not(.product-note){font-size:14px;line-height:1.8;color:var(--muted);max-width:500px}.companion ul{list-style:none;padding:0;margin:22px 0 27px}.companion li{font-size:12px;line-height:1.75;padding:5px 0 5px 18px;position:relative}.companion li::before{content:'+';position:absolute;left:0;color:var(--ochre)}.primary{background:var(--pine);color:var(--cream)}.primary:hover{background:var(--green)}.product-note{font-size:10px;line-height:1.65;color:var(--muted);margin:15px 0 0;max-width:480px}.mini-ledger{background:var(--sage);padding:30px;transform:rotate(-1deg)}.ledger-top{font-size:9px;letter-spacing:.13em;font-weight:700;margin:0 0 23px}.mini-ledger dl{margin:0}.mini-ledger dl div{display:flex;justify-content:space-between;gap:20px;padding:17px 0;border-bottom:1px solid #b5c1ad;font-size:12px;line-height:1.5}.mini-ledger dd{margin:0;font-variant-numeric:tabular-nums}.mini-ledger .ledger-total{border:0;padding-top:25px;align-items:baseline}.ledger-total dt{font-family:Georgia,serif;font-size:22px}.ledger-total dd{font-family:Georgia,serif;font-size:57px;line-height:1}.mini-ledger>p:last-child{font-size:10px;line-height:1.65;color:var(--muted);margin:20px 0 0}.faq{display:grid;grid-template-columns:1fr 1.3fr;gap:60px;padding:60px 30px}.faq h2{font-size:32px}.faq details{border-bottom:1px solid var(--line);padding:16px 0}.faq details:first-child{padding-top:0}.faq summary{font-size:13px;font-weight:700;cursor:pointer;line-height:1.6;padding-right:10px}.faq details p{font-size:12px;line-height:1.75;color:var(--muted);margin:12px 0 0}.site-footer{border-top:1px solid var(--line);padding-block:26px 35px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}.site-footer>span{font-family:Georgia,serif;font-size:18px}.site-footer nav{display:flex;gap:25px}.site-footer a{font-size:11px;text-underline-offset:4px}.site-footer small{flex-basis:100%;font-size:10px;line-height:1.6;color:var(--muted)}@media(min-width:900px){.result-panel{position:sticky;top:20px;align-self:start;min-height:100%}}@media(max-width:900px){.wrap{width:calc(100% - 40px)}.site-header{min-height:96px}.intro{padding-top:44px}.intro-bottom{align-items:flex-start;flex-direction:column;gap:17px}.calculator{grid-template-columns:1fr 1fr}form{padding:25px 22px}.panel-heading{display:block}.badge{display:inline-block;margin-top:13px}.result-panel{padding:26px 23px}.fields{column-gap:15px}.field-help{min-height:50px}.result-number{font-size:94px}.result-number.long{font-size:54px}.explanation,.companion,.faq{gap:32px;padding-inline:10px}.companion h2{font-size:36px}.mini-ledger{padding:24px}.companion{grid-template-columns:1.2fr 1fr}}@media(max-width:680px){.site-header{gap:15px;min-height:92px}.brand{font-size:17px;gap:10px}.brand img{width:34px;height:34px}.brand small{font-size:9px}.header-link{font-size:10px;max-width:78px;white-space:normal;line-height:1.6}.intro{padding:35px 0 28px}h1{font-size:43px;line-height:1.08}.intro-bottom p{font-size:14px}.intro-bottom p br{display:none}.text-link{font-size:11px}.calculator{grid-template-columns:1fr}.panel-heading{display:flex;align-items:flex-start}.panel-heading h2{font-size:25px}.badge{margin-top:0;font-size:9px;padding:6px 8px}.fields{gap:20px 15px}.field label{font-size:12px}.field-help{font-size:10px;min-height:45px}.field input{font-size:20px}.product-field label{font-size:12px}.result-panel{padding:29px 26px}.result-panel .eyebrow{margin-bottom:19px}.result-number{font-size:96px}.result-number.long{font-size:65px}.difference-box span{max-width:none}.result-actions{margin-top:0}.explanation,.companion,.faq{grid-template-columns:1fr;gap:25px;padding:42px 4px}.explanation h2{font-size:32px}.explanation h2 br{display:none}.companion h2{font-size:36px}.mini-ledger{margin-top:8px;max-width:370px;transform:none}.faq h2{font-size:30px}.site-footer{padding-top:24px}.site-footer>span{font-size:17px}}@media(max-width:370px){.wrap{width:calc(100% - 28px)}.brand{font-size:15px}.brand small{font-size:8px}.brand img{width:30px;height:30px}.header-link{font-size:9px;max-width:64px}h1{font-size:38px}.panel-heading{display:block}.badge{margin-top:10px}.fields{grid-template-columns:1fr}.field-help{min-height:0}.form-actions{gap:10px}.result-number.long{font-size:53px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
@media(max-width:680px) and (min-width:371px){.field label{min-height:36px}}
.mobile-result-link{display:none}@media(max-width:680px){.mobile-result-link{display:inline-flex;align-items:center;gap:12px;text-decoration-thickness:1px}}

/* Optional analytics choice; no input capture. */
.analytics-banner{position:fixed;z-index:100;bottom:16px;left:50%;transform:translateX(-50%);width:min(1080px,calc(100% - 32px));padding:20px 24px;background:var(--cream);color:var(--pine);border:1px solid var(--green);display:flex;justify-content:space-between;align-items:center;gap:25px}.analytics-banner[hidden]{display:none}.analytics-banner strong{font-size:14px}.analytics-banner p{font-size:12px;line-height:1.5;max-width:540px;margin-top:7px}.analytics-banner a{color:inherit}.analytics-actions{display:flex;gap:10px;flex-shrink:0}.analytics-actions .button{font-size:11px;min-height:43px;padding:13px 16px;color:var(--cream);background:var(--pine)}.analytics-actions .secondary{color:var(--pine);background:var(--paper)}.form-actions{flex-wrap:wrap}@media(max-width:700px){.analytics-banner{align-items:stretch;flex-direction:column;padding:14px;gap:12px}.analytics-actions{flex-wrap:wrap}}