:root{--ink:#202a30;--muted:#58666b;--paper:#f4f6f5;--line:#dce2de;--orange:#b54417;--orange-dark:#943311;--green:#163e34;--soft:#e9f0ec;--white:#fff;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;font-size:16px;line-height:1.65}a{color:var(--green);text-underline-offset:4px}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #de8b2c;outline-offset:4px}[hidden]{display:none!important}.skip{position:absolute;top:-90px;left:16px;background:white;padding:12px;z-index:20}.skip:focus{top:8px}.header{background:#fff;border-bottom:1px solid var(--line)}.nav{max-width:1200px;margin:auto;padding:20px 28px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-weight:800;font-size:20px;text-decoration:none;letter-spacing:-.6px;display:flex;align-items:center;gap:10px}.brand-mark{background:var(--green);color:white;width:34px;height:34px;display:grid;place-items:center;border-radius:5px;font-size:21px}.nav-links{display:flex;gap:24px;font-size:14px}.nav-links a{text-decoration:none}.shell{max-width:1200px;margin:auto;padding:28px}.crumb{font-size:13px;color:var(--muted);margin-bottom:20px}.crumb a{color:inherit}.eyebrow{text-transform:uppercase;letter-spacing:2px;font-size:12px;font-weight:700;color:var(--orange);margin:0 0 8px}.intro{max-width:830px;margin-bottom:26px}h1{font-size:clamp(30px,4vw,44px);line-height:1.14;letter-spacing:-1.6px;margin:0 0 14px}h2{font-size:26px;line-height:1.3;letter-spacing:-.6px;margin:0 0 16px}h3{font-size:18px;margin:24px 0 8px}p{margin:0 0 18px}.intro p:last-child{color:var(--muted);font-size:16px;line-height:1.6}.workspace{display:grid;grid-template-columns:1.15fr 1fr;gap:0;background:white;border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:0 8px 32px #10281f06}.form-side{padding:30px}.panel-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px}.panel-heading h2{font-size:19px;margin:0}.step-label{font-size:12px;color:var(--muted);letter-spacing:1px}.units{display:flex;background:var(--paper);padding:3px;border-radius:7px;gap:2px}.units button{border:0;background:transparent;color:var(--muted);min-height:44px;padding:7px 12px;border-radius:5px;font-size:14px}.units button[aria-pressed=true]{background:white;box-shadow:0 1px 5px #0001;color:var(--ink);font-weight:700}.fields{display:grid;grid-template-columns:1fr 1fr;gap:18px}label{font-size:14px;font-weight:700;display:block;margin-bottom:7px}.input-wrap{position:relative}.input-wrap input{padding-right:64px}.unit-label{position:absolute;right:14px;top:12px;font-size:14px;color:var(--muted);pointer-events:none}input,select{width:100%;height:49px;border:1px solid #becac2;border-radius:5px;background:white;color:var(--ink);padding:10px 12px;min-width:0}input:focus,select:focus{outline:2px solid var(--green);outline-offset:1px}.full{grid-column:1/-1}.quick{display:flex;gap:8px;margin-top:9px}.quick button{font-size:13px;background:#f3f6f4;border:1px solid var(--line);border-radius:4px;min-height:44px;min-width:46px}.help{font-size:13px;color:var(--muted);margin:8px 0 0}.form-actions{display:flex;align-items:center;gap:12px;margin-top:24px}.primary{background:var(--orange);color:white;border:0;border-radius:5px;padding:12px 20px;min-height:48px;font-weight:700;flex:1}.primary:hover{background:var(--orange-dark)}.secondary{background:transparent;color:var(--green);border:1px solid #b4c5bb;border-radius:5px;padding:9px 14px;min-height:44px}.error{color:#a52617;background:#fff0ec;border-radius:4px;font-size:14px;padding:10px;margin-top:14px}.result-side{background:var(--green);color:white;padding:30px;display:flex;flex-direction:column}.result-side .eyebrow{color:#bad3c5}.result-title{font-size:14px;color:#c6d7ce}.big-number{font-size:clamp(48px,5vw,70px);font-weight:700;letter-spacing:-2px;line-height:1.2;margin:8px 0 0;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.big-unit{font-size:17px;color:#d3e3da;margin:0 0 12px}.allowance{display:inline-block;font-size:12px;color:#d9e7df;background:#ffffff12;border:1px solid #ffffff25;border-radius:4px;padding:4px 9px;margin:0 0 24px}.result-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;border-top:1px solid #ffffff25;padding-top:17px;margin-bottom:20px}.stat span{display:block;font-size:12px;color:#b9cfc2}.stat strong{font-size:19px;font-variant-numeric:tabular-nums}.bag-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.bag{background:#ffffff0d;border:1px solid #ffffff25;border-radius:5px;padding:13px 9px;text-align:center}.bag strong{font-size:25px;display:block;line-height:1.4}.bag span{font-size:12px;color:#d1dfd7}.result-note{font-size:13px;color:#c2d4c9;margin:14px 0}.copy{color:white;border-color:#ffffff45;margin-top:auto;align-self:flex-start}.trust-strip{display:flex;gap:24px;margin:17px 0 42px;color:var(--muted);font-size:13px;flex-wrap:wrap}.trust-strip span:before{content:'✓';color:var(--green);font-weight:bold;margin-right:7px}.body-grid{display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:48px}.article section{padding:0 0 28px;margin:0 0 30px;border-bottom:1px solid var(--line);scroll-margin-top:24px}.article p,.article li{color:#455259}.article ul,.article ol{padding-left:23px}.article li{margin-bottom:9px}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:7px;margin:18px 0}table{border-collapse:collapse;width:100%;font-size:14px;background:white}th,td{padding:12px 15px;text-align:left;border-bottom:1px solid var(--line);white-space:normal}th{background:#e9efeb;font-weight:700;color:#284539}tr:last-child td{border-bottom:0}.formula{background:#e9efeb;border-left:3px solid var(--green);padding:18px 20px;margin:18px 0;font-family:Consolas,monospace;font-size:15px;overflow-wrap:anywhere}.callout{background:white;border:1px solid var(--line);border-radius:7px;padding:20px;margin:18px 0}.sidebar{align-self:start;position:sticky;top:25px}.sidebar h2{font-size:13px;letter-spacing:1px;text-transform:uppercase}.sidebar a{display:block;font-size:14px;text-decoration:none;padding:9px 0;color:var(--muted);border-bottom:1px solid var(--line)}.sidebar .mini-note{margin-top:26px;background:#e6ede8;padding:18px;border-radius:7px;font-size:13px;color:#465b50}.mini-note strong{display:block;margin-bottom:7px}details{border-bottom:1px solid var(--line);padding:16px 0}summary{cursor:pointer;font-weight:700;line-height:1.5;padding-right:18px}details p{padding-top:14px;font-size:15px;margin:0}.related{margin:15px 0 40px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.related-card{background:white;border:1px solid var(--line);border-radius:7px;padding:20px;text-decoration:none;font-weight:700;line-height:1.4}.related-card:hover{border-color:var(--green);background:#edf3ee}.related-card small{display:block;color:var(--muted);font-size:13px;font-weight:400;margin-top:8px}.footer{border-top:1px solid var(--line);padding:26px 28px;background:white;font-size:13px;color:var(--muted)}.footer-inner{max-width:1144px;margin:auto;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.footer-links{display:flex;gap:16px;flex-wrap:wrap}.footer p{margin:8px 0 0}.room-row{border:1px solid var(--line);padding:15px;border-radius:5px;margin-bottom:14px}.room-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-size:14px;font-weight:bold}.room-head button{font-size:13px;min-height:44px;border:0;background:transparent;color:var(--orange)}.layer-result{padding:12px 0;border-top:1px solid #ffffff25}.layer-result strong{display:block}.layer-result span{font-size:13px;color:#c2d4c9}noscript{display:block;background:#fff4d7;padding:16px;margin-bottom:20px}.plain-page{max-width:780px;min-height:60vh;padding:20px 0}.tag{font-size:12px;color:var(--muted)}
@media(max-width:800px){.workspace{grid-template-columns:1fr}.body-grid{grid-template-columns:1fr;gap:0}.sidebar{display:none}.related-grid{grid-template-columns:1fr 1fr}.form-side,.result-side{padding:23px}.shell{padding:22px 18px}.nav{padding:17px 18px}.nav-links{gap:15px}.intro{margin-bottom:22px}.trust-strip{gap:10px 19px;margin-bottom:30px}.big-number{font-size:54px}.result-side{min-height:390px}}
@media(max-width:420px){.nav-links a:last-child{display:none}.brand{font-size:18px}.panel-heading{align-items:flex-start;flex-direction:column;gap:12px}.fields{gap:13px}.related-grid{grid-template-columns:1fr}th,td{padding:10px}.footer{padding:22px 18px}.form-side,.result-side{padding:20px}.quick button{min-width:44px}h1{letter-spacing:-1px}}
@media print{.header,.sidebar,.footer,.related,.form-actions,.units,.copy,.quick{display:none}.workspace{display:block}.result-side{background:white;color:black}.result-side *{color:black!important}.shell{padding:0}.body-grid{display:block}.article details{display:block}.article details p{display:block}.result-side{break-inside:avoid}.big-number{font-size:40px}}