@import url("/fonts.css");:root{--navy:#1e293b;--ink:#172235;--muted:#64748b;--amber:#b45309;--line:#dce1e5;--paper:#faf9f6;--white:#fff;--sans:Arial,Helvetica,sans-serif;--mono:"Courier New",monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.6;font-size:16px}a{color:inherit;text-underline-offset:4px}button,input,select{font:inherit}a,button,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:1px solid var(--navy);background:var(--navy);color:white;padding:11px 16px;font-size:14px;border-radius:4px;min-height:44px}button:disabled{cursor:not-allowed;opacity:.58}button:hover:not(:disabled){background:#334155}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #d97706;outline-offset:3px}.site-header{max-width:1360px;margin:auto;padding:24px 36px;gap:45px;border-bottom:1px solid var(--line)}.site-header,.wordmark{display:flex;align-items:center}.wordmark{gap:9px;font-weight:750;font-size:21px;text-decoration:none;letter-spacing:-.7px}.wordmark>span:last-child{color:var(--amber);margin-left:-9px}.logo{display:inline-flex;width:28px;height:34px;border:2px solid var(--navy);padding:5px;margin-right:2px}.logo i{display:block;width:100%;border:1.5px solid var(--amber)}.site-header nav{display:flex;gap:25px;font-size:14px}.site-header nav a{text-decoration:none}.site-header nav a:hover{color:var(--amber)}.header-tag{margin-left:auto;font:10px var(--mono);letter-spacing:1.8px;color:var(--muted)}main{max-width:1288px;margin:auto;padding:33px 36px 65px}.eyebrow,.section-caption{font:10px var(--mono);letter-spacing:1.5px;color:var(--muted)}.page-heading{margin-bottom:25px}.page-heading h1{font-size:32px;line-height:1.22;letter-spacing:-1px;margin:12px 0 0;max-width:900px}.toolbar{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;border-bottom:1px solid var(--line);margin-bottom:24px}.steps{display:flex;gap:21px;align-self:stretch}.steps a{font-size:14px;padding:13px 0;text-decoration:none;color:var(--muted)}.steps [aria-current]{border-bottom:3px solid var(--amber);color:var(--navy);font-weight:700}.unit{display:flex;align-items:center;gap:10px;font-size:12px;padding-bottom:9px}.unit select{padding:7px 10px;min-height:40px;font-size:16px;background:white;border:1px solid var(--line);border-radius:4px}.calculator-grid{display:grid;grid-template-columns:minmax(300px,.8fr) minmax(0,1.2fr);grid-gap:38px;gap:38px;align-items:start}.inputs{padding:15px 0}.section-caption{display:flex;align-items:center;gap:7px;margin-bottom:17px;color:var(--navy)}.dot{width:6px;height:6px;background:var(--amber);display:inline-block}.field-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px 14px;gap:16px 14px;margin-bottom:18px}.field{display:block;min-width:0}.field>span{display:block;font-size:12px;color:#475569;margin-bottom:5px}.batch-controls input,.field input,.field select{width:100%;min-height:43px;padding:10px 11px;border:1px solid #cbd5e1;background:white;border-radius:3px;font-size:16px;color:var(--ink)}input[aria-invalid=true]{border-color:#b91c1c}details{border-top:1px solid var(--line);padding-top:11px;margin:8px 0}summary{cursor:pointer;font-size:13px;font-weight:600;padding-bottom:10px;min-height:42px}details[open]>summary{margin-bottom:8px}.micro{font-size:12px;line-height:1.6;color:var(--muted);margin:9px 0}.text-button{background:transparent;color:var(--amber);border:none;padding:4px 0;min-height:38px;font-size:12px}.text-button:hover:not(:disabled){background:transparent;text-decoration:underline}.results{border:1px solid var(--line);background:white;padding:22px;border-radius:6px}.result-heading{display:flex;flex-direction:column;margin-bottom:20px}.result-heading>span{font:10px var(--mono);letter-spacing:1.4px;color:var(--amber)}.result-heading strong{font-size:29px;line-height:1.3;letter-spacing:-.8px;margin:6px 0 3px}.result-heading small{font-size:11px;color:var(--muted);font-family:var(--mono)}svg{display:block;max-width:100%;height:auto;width:100%}.cut-table{border-collapse:collapse;width:100%;font-size:12px;margin-top:17px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.cut-table caption{text-align:left;font:10px var(--mono);letter-spacing:1px;color:var(--muted);margin:0 0 9px}.cut-table th{text-align:left;color:#475569;font-size:11px;font-weight:600}.cut-table td,.cut-table th{border-bottom:1px solid var(--line);padding:9px 5px;vertical-align:top}.cut-table td:last-child{font-family:var(--mono)}.actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:19px}.actions button{font-size:12px;padding:9px 13px}.actions a{font-size:12px;color:var(--amber);font-weight:600;line-height:1.4}.error{padding:12px 16px;background:#fef2f2;border:1px solid #fecaca;border-radius:4px;color:#991b1b;font-size:13px}.batch-and-kit{display:grid;grid-template-columns:1.4fr .8fr;grid-gap:30px;gap:30px;margin-top:34px;padding-top:27px;border-top:1px solid var(--line)}.batch-and-kit h2{font-size:19px;letter-spacing:-.3px;margin:0 0 15px;line-height:1.3}.batch-controls{display:flex;gap:10px}.batch-controls input{flex:1 1;min-width:0}.batch-controls button{white-space:nowrap}.kit-card{background:#f0ebe0;border-radius:5px;padding:25px}.kit-card .section-caption{color:var(--amber);margin-bottom:12px}.kit-card p{font-size:13px;line-height:1.7;margin:10px 0 18px}.kit-card .micro{font-size:11px;margin-bottom:12px}.kit-card button{width:100%}.hardware{margin-top:20px}.hardware .cut-table{margin-top:0}.check{display:flex;align-items:center;gap:8px;font-size:13px}.check input{width:18px;height:18px}.guide{max-width:770px;margin:70px auto 0;padding-top:35px;border-top:2px solid var(--navy)}.guide h2{font-size:27px;line-height:1.35;letter-spacing:-.7px;margin-top:12px;margin-bottom:30px}.guide h3{font-size:19px;line-height:1.4;margin-top:36px;letter-spacing:-.3px}.guide p{font-size:16px;line-height:1.9;margin:14px 0}.guide table{border-collapse:collapse;font-size:13px;width:100%;margin:25px 0}.guide table td,.guide table th{padding:12px;text-align:left;border:1px solid var(--line)}.guide table th{background:#f0eee8}.table-scroll{overflow-x:auto;max-width:100%}.table-scroll table{min-width:430px}.guide details{padding:12px 0;border-bottom:1px solid var(--line);border-top:0}.guide summary{font-size:15px}.guide details p{font-size:14px}.guide .sources{margin-top:40px}.sources ul{padding-left:19px}.sources a{font-size:13px;color:var(--amber)}footer{max-width:1216px;padding:35px 0;margin:auto;border-top:1px solid var(--line);display:flex;gap:20px;align-items:center;flex-wrap:wrap}footer p{font-size:11px;color:var(--muted);max-width:350px;margin:0 auto 0 0}footer nav{display:flex;gap:16px;font-size:11px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.policy{margin-top:0}.policy h1{font-size:32px}@media(max-width:960px){.site-header{gap:25px;padding:20px 24px}.header-tag{display:none}main{padding:28px 24px 55px}.calculator-grid{gap:24px;grid-template-columns:minmax(260px,.9fr) minmax(0,1.1fr)}.result-heading strong{font-size:25px}.results{padding:17px}.batch-and-kit{gap:22px}.steps{gap:15px}.steps a{font-size:12px}footer{margin:0 24px}.unit{font-size:0;gap:0}}@media(max-width:700px){.site-header{padding:17px 18px;gap:15px;flex-wrap:wrap}.wordmark{font-size:20px}.site-header nav{gap:19px;font-size:12px;margin-left:auto}.site-header nav a:nth-child(3){display:none}main{padding:23px 18px 45px}.page-heading h1{font-size:25px;letter-spacing:-.7px}.toolbar{display:block;margin-bottom:16px}.steps{justify-content:space-between;gap:6px}.steps a{font-size:11px;padding-top:9px}.unit{justify-content:flex-end;padding:10px 0;font-size:12px;gap:8px}.unit select{font-size:16px}.calculator-grid{grid-template-columns:1fr;gap:17px}.inputs{padding-top:6px}.results{padding:15px}.field-grid{gap:14px}.result-heading strong{font-size:27px}.batch-and-kit{grid-template-columns:1fr;gap:23px;margin-top:24px;padding-top:22px}.batch-controls{flex-wrap:wrap}.batch-controls input{flex-basis:150px}.batch-controls button{font-size:12px;padding:10px}.kit-card{padding:21px}.guide{margin-top:43px;padding-top:27px}.guide h2{font-size:24px}.guide h3{font-size:18px}.guide p{font-size:15px;line-height:1.85}.actions a{padding:7px 0}footer{margin:0 18px;display:block;padding:25px 0}footer p{margin:13px 0}footer nav{flex-wrap:wrap;gap:15px}.table-scroll table{min-width:420px}}@media print{@page{size:letter;margin:.4in}body{background:white;color:black;font-size:10pt}.actions,.batch-controls,.guide,.hardware,.inputs,.kit-card,.site-header,.toolbar,button,footer{display:none!important}main{padding:0}.page-heading h1{font-size:17pt}.calculator-grid{display:block}.results{border:0;padding:0}.results svg{max-height:4in;width:100%}.cut-table{font-size:10pt}.batch-and-kit{display:block;border:0;margin:18px 0}.batch-card,.cut-table tr{page-break-inside:avoid;break-inside:avoid}.table-scroll{overflow:visible}.result-heading strong{font-size:17pt}}