:root{color-scheme:light;--paper:#f4f1e9;--ink:#16332d;--muted:#465f57;--line:#bac8bd;--green:#173e35;--lime:#daee9f;--copper:#a64823;--white:#fffefa;--bad:#962e27;--font:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:2rem}body{margin:0;background:var(--paper);color:var(--ink);font:1.125rem/1.62 var(--font)}a{color:#0b6155;text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}button,input,select{font:inherit}button,.button{display:inline-block;min-height:46px;padding:.55rem .85rem;border:1px solid var(--green);border-radius:4px;background:var(--green);color:var(--white);font-weight:650;cursor:pointer;text-decoration:none}button:hover,.button:hover{background:#285b4d}button.secondary,.button.secondary{background:transparent;color:var(--green)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #a64c22;outline-offset:4px}.skip{position:absolute;left:1rem;top:-100px;background:white;padding:1rem;z-index:10}.skip:focus{top:1rem}.masthead{background:var(--green);color:var(--white);padding:1.2rem max(1.25rem,calc((100vw - 1440px)/2));display:flex;align-items:center;gap:1.5rem;justify-content:space-between}.brand{font-size:1.35rem;color:var(--white);font-weight:750;letter-spacing:-.02em;text-decoration:none}.brand small{display:block;font-weight:400;font-size:1.125rem;color:var(--lime)}.masthead>a:last-child{color:var(--lime)}.shell{max-width:1440px;margin:auto;display:grid;grid-template-columns:245px minmax(0,1fr)}.rail{border-right:1px solid var(--line);padding:2rem 1.25rem;align-self:start;position:sticky;top:0;max-height:100vh;overflow:auto}.rail summary{font-weight:700}.rail nav a{display:block;padding:.6rem .7rem;text-decoration:none;border-left:3px solid transparent;color:var(--ink)}.rail nav a[aria-current=page]{border-left-color:var(--copper);background:#e4e9d9;font-weight:700}.rail .small{margin-top:1.5rem;color:var(--muted)}main{min-width:0;padding:2rem 2.3rem 5rem}.eyebrow{text-transform:uppercase;letter-spacing:.1em;font-weight:700;color:var(--copper);margin:0 0 .65rem}h1,h2,h3{line-height:1.13;letter-spacing:-.025em}h1{font-size:clamp(2.4rem,5vw,4.7rem);max-width:18ch;margin:.3rem 0 1.2rem;font-weight:750}h2{font-size:clamp(1.65rem,3vw,2.35rem);margin:.3rem 0 1rem}h3{font-size:1.35rem;margin:0 0 1rem}.lede{font-size:1.35rem;max-width:70ch;color:var(--muted);line-height:1.5}.updated{color:var(--muted)}.toolbar{display:flex;gap:.55rem;flex-wrap:wrap;padding:1rem 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:1.5rem 0}.toolbar button{background:var(--white);color:var(--green)}.toolbar button:hover{background:#e4e9d9}#scenario-status{color:var(--muted);min-height:1.8em}#notice{background:#ffe9de;color:#792d1f;padding:.8rem 1rem;border-left:4px solid var(--copper)}#notice:empty{display:none}.lab-section{margin:2.4rem 0 3rem;border-top:2px solid var(--green);padding-top:1.2rem}.section-title{display:flex;align-items:baseline;gap:1rem}.section-number{color:var(--copper);text-transform:uppercase;letter-spacing:.07em}.section-intro{max-width:76ch}.workbench{display:grid;grid-template-columns:minmax(260px,.9fr) minmax(0,1.1fr);gap:1.8rem;align-items:start}.workbench fieldset{border:0;border-bottom:1px solid var(--line);margin:0 0 1.5rem;padding:0 0 1rem;min-width:0}legend{font-weight:750;font-size:1.2rem;margin-bottom:1rem}.fields{display:grid;gap:1rem}.field{display:block;min-width:0}.field>span:first-child{display:block;font-weight:600;margin-bottom:.3rem}.input-unit{display:flex;align-items:center;gap:.7rem}.input-unit input{min-width:0;width:100%;max-width:220px;border:1px solid #70867c;background:var(--white);color:var(--ink);padding:.5rem .6rem;border-radius:3px}.input-unit>span{color:var(--muted);white-space:nowrap}select{max-width:100%;width:100%;padding:.5rem;border:1px solid #70867c;background:var(--white);color:var(--ink);border-radius:3px}.help{display:block;color:var(--muted);margin-top:.35rem;line-height:1.45}.results{background:var(--white);padding:1.3rem;border:1px solid var(--line);border-top:4px solid var(--green);min-width:0}.metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin:0 0 1.2rem}.metric{border-bottom:1px solid var(--line);padding:0 0 1rem;min-width:0}.metric dt{color:var(--muted);line-height:1.35}.metric dd{font-size:1.65rem;font-weight:750;letter-spacing:-.035em;line-height:1.15;margin:.5rem 0 0;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.metric p{margin:.4rem 0 0}.formula{border-left:3px solid var(--copper);padding-left:.8rem;overflow-wrap:anywhere}.assumption{color:var(--muted);line-height:1.5}.table-scroll{max-width:100%;overflow:auto;margin:1.25rem 0}table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums;text-align:left}caption{font-weight:700;text-align:left;margin-bottom:.6rem}th,td{padding:.65rem .5rem;border-bottom:1px solid var(--line);vertical-align:top}thead th{background:#edf0e5}tbody th{font-weight:600}tr:last-child td,tr:last-child th{border-bottom:0}.status{padding:.75rem;border-left:4px solid currentColor}.shortfall{color:var(--bad);background:#fff1eb}.balanced{color:#1d5a40;background:#edf5e8}.periodic-wrap{overflow:auto;max-width:100%;padding:.5rem}.periodic{display:grid;grid-template-columns:repeat(18,54px);gap:4px;min-width:1040px}.element{padding:.3rem;min-height:72px;color:var(--ink);background:#e6eccc;border-color:#647b6c;font-size:1rem}.element span{display:block;font-size:1rem}.element strong{font-size:1.3rem}.element.transition{background:#f0cfad}.element.noble{background:#d4e4ed}.element.alkali,.element.alkaline{background:#ead6de}.prose{max-width:82ch}.prose h2{margin-top:2.6rem}.prose h3{margin-top:1.8rem}.prose p{margin:1rem 0}.prose a{overflow-wrap:anywhere}.reference-list li{margin:1rem 0}.route-list{list-style:none;margin:2rem 0;padding:0;border-top:1px solid var(--line)}.route-list li{border-bottom:1px solid var(--line);padding:1.2rem 0;display:grid;grid-template-columns:2.5rem 1fr;gap:1rem}.route-list .route-number{font-size:1.5rem;color:var(--copper)}.route-list a{font-size:1.45rem;font-weight:700}.route-list p{margin:.35rem 0 0;color:var(--muted)}.lead-rule{font-size:1.6rem;max-width:45ch;border-left:5px solid var(--copper);padding-left:1.2rem;margin:2rem 0}.connection-list{padding-left:1.2rem}.connection-list li{margin:1.1rem 0}.read-tools{display:flex;flex-wrap:wrap;gap:.6rem}.report-toc{columns:2;column-gap:2rem;padding-left:1.2rem}.report-toc li{break-inside:avoid;margin:.45rem 0}.report-section{scroll-margin-top:1rem}.site-footer{border-top:1px solid var(--line);padding:1.5rem max(1.25rem,calc((100vw - 1390px)/2));color:var(--muted)}.site-footer p{max-width:110ch}.site-footer a{margin-right:1rem}details summary{cursor:pointer}noscript p{padding:1rem;border:1px solid var(--line)}
@media(min-width:1200px){.results{position:sticky;top:1rem;max-height:calc(100vh - 2rem);overflow:auto}.prose .results{position:static;max-height:none}}
@media(max-width:1050px){.shell{grid-template-columns:205px minmax(0,1fr)}main{padding:1.7rem 1.4rem 4rem}.workbench{grid-template-columns:1fr}.fields{grid-template-columns:repeat(2,minmax(0,1fr))}.metrics{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:720px){body{font-size:1.125rem}.shell{display:block}.rail{position:static;max-height:none;border-right:0;border-bottom:1px solid var(--line);padding:.7rem 1.2rem}.rail nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.rail .small{display:none}.masthead{padding:1rem 1.2rem}.masthead>a:last-child{display:none}main{padding:1.4rem 1.1rem 3rem}h1{font-size:2.65rem}.lede{font-size:1.22rem}.metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.fields{grid-template-columns:1fr}.results{padding:1rem}.section-title{display:block}.section-number{display:block}.report-toc{columns:1}.toolbar{gap:.5rem}.toolbar button{flex:1 0 45%}.input-unit input{max-width:none}.route-list li{gap:.5rem;grid-template-columns:1.7rem 1fr}.table-scroll{font-size:1.125rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
@media print{.masthead,.rail,.toolbar,.site-footer,.skip,#notice,#scenario-status{display:none}.shell{display:block}main{padding:0}.results{position:static;overflow:visible;max-height:none}.workbench{display:block}.lab-section{break-before:auto}body{font-size:11pt;color:black;background:white}a{color:black}.table-scroll{overflow:visible}.prose{max-width:none}}
.field>input{width:100%;max-width:100%;padding:.5rem .6rem;border:1px solid #70867c;background:var(--white);color:var(--ink);border-radius:3px}
body:not([data-page="overview"]) h1{font-size:clamp(2.25rem,3.6vw,3.3rem);max-width:26ch}