:root{--paper:#f4f2eb;--ink:#212d29;--muted:#58665e;--line:#ccd1c5;--lime:#d8ee91;--rust:#944927;--white:#fbfaf6}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 Arial,Helvetica,sans-serif}a{color:inherit;text-underline-offset:4px}a:hover{color:#57723d}button,input{font:inherit}button,a,input,summary{touch-action:manipulation}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #9b4d24;outline-offset:5px}.skip{position:absolute;top:-60px;left:12px;background:var(--ink);color:white;padding:8px 16px;z-index:50}.skip:focus{top:5px}.site-header{max-width:1280px;margin:auto;padding:23px 48px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:700;letter-spacing:-.5px}.brand svg{width:31px;height:31px;stroke:var(--ink);fill:none;stroke-width:2}nav{display:flex;gap:30px;font-size:13px}nav a{text-decoration:none}main,footer{max-width:1280px;margin:auto;padding:0 48px}.intro{padding:50px 0 0}.eyebrow{font-size:11px;font-weight:700;letter-spacing:1.7px;text-transform:uppercase;margin:0 0 20px;display:flex;align-items:center;gap:8px}.dot{width:7px;height:7px;border-radius:50%;background:#75913f}.intro-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:70px;align-items:center}h1{font:clamp(42px,5.25vw,72px)/1.04 Georgia,serif;letter-spacing:-2.6px;margin:0 0 40px}h1 em{font-weight:400;color:#657654}p{margin:0 0 16px}.intro-copy{max-width:440px;padding-bottom:30px}.intro-copy>p:first-child{font-size:22px;line-height:1.4;letter-spacing:-.3px}.muted{color:var(--muted);font-size:15px}.text-link{display:inline-flex;justify-content:space-between;gap:35px;font-size:13px;font-weight:700;text-decoration:none;border-bottom:1px solid var(--ink);padding:6px 0}.status-strip{padding:14px 18px;background:#e7e9df;display:flex;justify-content:space-between;gap:20px;font-size:12px;line-height:1.5;border-left:3px solid #7b8c61}.status-strip span{color:var(--muted)}section{margin-bottom:66px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}.section-heading .eyebrow{margin-bottom:10px}h2{font:36px/1.2 Georgia,serif;letter-spacing:-1px;margin:0}.section-note{font-size:13px;line-height:1.6;color:var(--muted);margin:0}.lab-grid{display:grid;grid-template-columns:1.2fr 1fr;border:1px solid var(--line);background:var(--white)}.drawing-panel{padding:23px;border-right:1px solid var(--line);display:flex;flex-direction:column}.panel-top{display:flex;justify-content:space-between;align-items:center;gap:16px}.chip{display:inline-block;border:1px solid #b5bfad;border-radius:3px;padding:4px 8px;font-size:10px;font-weight:700;letter-spacing:.3px;line-height:1.5;white-space:nowrap}.mono{font:11px/1.5 ui-monospace,SFMono-Regular,Consolas,monospace;color:var(--muted)}#diagram{width:100%;height:auto;margin:20px 0 14px;overflow:visible;flex:1}#diagram text{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px;fill:#3c4c3b}#diagram .svg-small{font-size:11px}.legend{display:flex;flex-wrap:wrap;gap:12px 20px;font-size:10px;color:var(--muted)}.legend span{display:flex;align-items:center;gap:6px}.legend i{width:13px;height:9px;display:inline-block}.pocket{background:var(--lime);border:1px solid #647153}.envelope{border:1px dashed #526d61}.gap{background:var(--rust);height:3px!important}.drawing-note{font-size:12px;line-height:1.6;color:var(--muted);margin:18px 0 0;padding-top:15px;border-top:1px solid var(--line)}.controls-panel{padding:25px 28px}.control{margin-bottom:24px}.control label{font-size:13px;font-weight:700;display:flex;justify-content:space-between;align-items:center;gap:20px;line-height:1.45}output{font:700 14px ui-monospace,SFMono-Regular,Consolas,monospace;white-space:nowrap}input[type=range]{accent-color:#3f5941;width:100%;margin:12px 0 0;height:30px;cursor:pointer}.range-ends{display:flex;justify-content:space-between;color:var(--muted);font:10px ui-monospace,SFMono-Regular,Consolas,monospace}.control p{font-size:12px;line-height:1.5;color:var(--muted);margin:9px 0 0}.result-row{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding:11px 0;gap:15px;font-size:12px}.result-row small{display:block;color:var(--muted);font-size:10px;font-weight:400;line-height:1.45}.result-row>strong{font:20px/1.2 ui-monospace,SFMono-Regular,Consolas,monospace;white-space:nowrap}.result-row strong small{display:inline;font-size:11px}.calculation-status{font-size:11px;line-height:1.5;color:#436042;background:#edf1e3;padding:8px 10px;margin:3px 0 10px}.calculation-status.warn{color:#823c20;background:#f4e8df}.clearance-result{padding-top:12px}.outside{color:var(--rust)}button{background:none;border:0;border-bottom:1px solid var(--muted);padding:5px 0;cursor:pointer;font-size:12px;display:flex;gap:28px;color:var(--ink)}button:hover{color:#6f803b}.assumptions{display:grid;grid-template-columns:1.05fr 1fr 1fr;gap:34px;padding:28px 0 24px}.assumption{background:#ede5d7;border-color:#c1b194;color:#75532d}.assumptions h3{font:24px/1.25 Georgia,serif;margin:13px 0}.assumptions h4{font-size:12px;margin:4px 0 6px}.assumptions p{font-size:12px;color:var(--muted);line-height:1.65}.assumptions>div:first-child p{font-size:13px}details{border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:13px}summary{padding:18px 0;cursor:pointer;font-weight:700}.detail-content{max-width:850px;padding:0 0 20px;color:var(--muted);font-size:13px}.budget-list{list-style:none;margin:0 0 20px;padding:0;max-width:470px}.budget-list li{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid var(--line)}.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.flow>div{padding:20px;border:1px solid var(--line);border-right:0;position:relative}.flow>div:last-child{border-right:1px solid var(--line)}.flow>div:not(:last-child):after{content:'→';position:absolute;right:-11px;top:22px;z-index:1;background:var(--paper);padding:0 4px}.flow span,.small-number{font:11px ui-monospace,SFMono-Regular,Consolas,monospace;color:#748060}.flow h3{font-size:15px;line-height:1.35;margin:17px 0 9px}.flow p{font-size:12px;line-height:1.6;color:var(--muted);margin:0}.contract{background:var(--ink);color:#eef0e7;padding:32px 36px;margin-top:26px}.contract .eyebrow{color:#bccb9a;margin-bottom:12px}.contract>p:not(.eyebrow){font:30px/1.3 Georgia,serif;max-width:930px;margin-bottom:28px;letter-spacing:-.3px}.contract em{color:var(--lime)}.contract-bottom{display:flex;gap:45px;border-top:1px solid #526056;padding-top:18px;font-size:12px;color:#c8d0c0}.research-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:38px;margin-top:34px}.research-grid h3{font:23px/1.3 Georgia,serif;margin:10px 0}.research-grid p{font-size:13px;color:var(--muted)}.boundary-grid{display:grid;grid-template-columns:1fr 1fr;gap:46px}.boundary-grid article{border-top:1px solid var(--line);padding-top:24px}.boundary-grid h3{font:28px Georgia,serif;margin:20px 0 14px}.boundary-grid p{font-size:13px;color:var(--muted)}.boundary-grid a{font-size:12px;font-weight:700}.scope-note{background:#eee6dc;border-left:3px solid #a8754b;padding:16px 20px;font-size:13px;margin:32px 0}.next-work{display:grid;grid-template-columns:1fr 1.8fr;column-gap:45px;border-top:1px solid var(--line);padding-top:26px}.next-work h3{font:26px/1.2 Georgia,serif;margin:0}.next-work ol{margin:0;padding-left:20px;font-size:13px;color:var(--muted)}.next-work li{margin-bottom:7px;padding-left:6px}.next-work p{grid-column:2;font-size:12px;margin:12px 0 0}.sources{display:grid;grid-template-columns:1fr 1.1fr;gap:85px;border-top:1px solid var(--line);padding-top:38px;margin-bottom:50px}.sources>div>p:last-child{font-size:13px;color:var(--muted);margin-top:20px}.commit{font-family:monospace}.source-list{list-style:none;padding:0;margin:0}.source-list li{border-bottom:1px solid var(--line)}.source-list a{display:block;text-decoration:none;padding:12px 0}.source-list span{font-size:14px;font-weight:700}.source-list small{display:block;font-size:11px;color:var(--muted);margin-top:3px}footer{padding-top:23px;padding-bottom:35px;border-top:1px solid var(--line);display:flex;gap:65px;justify-content:space-between;font-size:11px;color:var(--muted)}footer>span{min-width:180px}footer p{max-width:670px;margin:0;font-size:10px}.notice{padding:15px;background:#ede5d7;font-size:13px} @media(max-width:960px){.site-header{padding:20px 28px}main,footer{padding-left:28px;padding-right:28px}.intro-grid{gap:32px}h1{font-size:54px}.intro-copy>p:first-child{font-size:19px}.controls-panel{padding:22px}.lab-grid{grid-template-columns:1fr 1fr}.panel-top{flex-wrap:wrap;gap:7px}.drawing-panel{padding:18px}.assumptions{gap:22px}.status-strip{flex-direction:column;gap:4px}.sources{gap:40px}.control label{flex-wrap:wrap;gap:6px}.flow>div{padding:17px 14px}}@media(max-width:700px){.site-header{padding:17px 20px;align-items:start;gap:10px}.brand{font-size:14px;gap:5px}.brand svg{width:25px;height:25px}nav{gap:15px;font-size:11px;padding-top:3px}nav a:last-child{display:none}main,footer{padding-left:20px;padding-right:20px}.intro{padding-top:34px}.intro-grid{grid-template-columns:1fr;gap:0}h1{font-size:52px;letter-spacing:-2px;margin-bottom:23px}.intro-copy{padding-bottom:26px;max-width:550px}.intro-copy>p:first-child{font-size:19px}.intro-copy p{font-size:14px}.eyebrow{font-size:10px;letter-spacing:1.3px}.status-strip{font-size:11px;padding:13px 14px}section{margin-bottom:45px}.section-heading{display:block;margin-bottom:20px}h2{font-size:30px}.section-note{margin-top:13px;font-size:12px}.section-note br{display:none}.lab-grid{grid-template-columns:1fr}.drawing-panel{border-right:0;border-bottom:1px solid var(--line);padding:18px}.panel-top{flex-wrap:nowrap}.chip{font-size:9px}#diagram{margin:12px 0 15px}.legend{font-size:9px;gap:9px 14px}.drawing-note{font-size:11px}.controls-panel{padding:22px}.control label{flex-wrap:nowrap}.control p{font-size:12px}.assumptions{grid-template-columns:1fr;gap:6px;padding-bottom:17px}.assumptions h3{font-size:24px}.assumptions p{font-size:13px}.assumptions h4{font-size:13px}.flow{grid-template-columns:1fr 1fr}.flow>div:nth-child(2){border-right:1px solid var(--line)}.flow>div:nth-child(1),.flow>div:nth-child(2){border-bottom:0}.flow>div:nth-child(2):after{display:none}.contract{padding:26px 23px}.contract>p:not(.eyebrow){font-size:25px}.contract-bottom{flex-direction:column;gap:12px}.research-grid{grid-template-columns:1fr;gap:16px;margin-top:25px}.research-grid p{font-size:13px}.boundary-grid{grid-template-columns:1fr;gap:26px}.next-work{grid-template-columns:1fr;gap:20px}.next-work p{grid-column:1;margin-top:0}.sources{grid-template-columns:1fr;gap:15px}.sources>div>p:last-child{margin-top:15px}.source-list a{padding:14px 0}footer{display:block}footer p{margin-top:15px}.scope-note{font-size:12px}.proposal .section-heading>.chip{margin-top:15px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Reading-scale type, including narrow viewports. */
:root{--paper:#f4f5f4;--ink:#182b35;--muted:#4f5e65;--line:#c9d0d2;--white:#fff}
nav,.text-link,.control label,.result-row,button,summary,.assumptions h4,.boundary-grid a,.source-list span{font-size:14px}
.eyebrow,.chip,.mono,.range-ends,.legend,.result-row small,.result-row strong small,.calculation-status,.flow span,.small-number,.source-list small,footer,footer p{font-size:12px}
.muted,.intro-copy p,.assumptions p,.assumptions>div:first-child p,.research-grid p,.boundary-grid p,.flow p,.next-work ol,.sources>div>p:last-child,.detail-content{font-size:16px}
.control p,.drawing-note,.section-note,.status-strip,.contract-bottom,.scope-note,.next-work p{font-size:14px}
.flow h3{font-size:17px}.result-row{gap:18px}.result-row>span{max-width:75%}.control label{align-items:start}.control output{font-size:14px}
@media(max-width:700px){.panel-top{flex-wrap:wrap}.control label{flex-wrap:wrap}.result-row{font-size:14px}.drawing-note{font-size:13px}nav{font-size:13px;gap:12px}h1{font-size:50px}.intro-copy>p:first-child{font-size:20px}.intro-copy p{font-size:16px}.brand{font-size:14px}.status-strip{font-size:13px}.contract-bottom{font-size:14px}.scope-note{font-size:14px}}