:root{--ink:#172b32;--muted:#52646a;--paper:#f7f6f1;--line:#d5ddd9;--teal:#14746c;--blue:#73929f;--orange:#bd633d}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 system-ui,sans-serif}header,main,footer{max-width:1160px;margin:auto;padding-left:36px;padding-right:36px}header{display:flex;justify-content:space-between;align-items:center;padding-top:28px;padding-bottom:28px;border-bottom:1px solid var(--line);gap:24px}a{color:var(--teal);text-underline-offset:4px}.brand{text-decoration:none;color:var(--ink);font-weight:700}.brand span{font-weight:400;color:var(--muted)}nav{display:flex;gap:24px;font-size:14px}h1,h2,h3,h4,p{margin-top:0}h1{font:500 clamp(3.5rem,7vw,6rem)/1.02 Georgia,serif;letter-spacing:-.045em;margin-bottom:28px}h2{font:500 clamp(1.9rem,3vw,2.8rem)/1.15 Georgia,serif;letter-spacing:-.025em;margin-bottom:24px}h3{font-size:20px;line-height:1.3;margin-bottom:8px}h4{font-size:14px;margin:0 0 8px}p{margin-bottom:20px}section{scroll-margin-top:30px}main>section{padding:65px 0;border-bottom:1px solid var(--line)}main>.hero{padding:85px 0 65px;max-width:900px;border:0}.eyebrow{text-transform:uppercase;letter-spacing:.13em;font-size:12px;font-weight:700;color:var(--teal);margin-bottom:18px}.lede{font-size:23px;line-height:1.55;max-width:780px}.status{display:inline-flex;align-items:center;gap:10px;background:#e3ece5;border:1px solid #c4d8ca;border-radius:24px;padding:6px 15px;font-size:13px;font-weight:600;margin:8px 0 24px}.dot{width:7px;height:7px;border-radius:50%;background:var(--teal)}.byline,.muted,figcaption{color:var(--muted);font-size:14px}.intro{max-width:800px}.sectionhead{display:flex;justify-content:space-between;align-items:center;gap:20px}.download{font-size:14px;white-space:nowrap}figure{margin:28px 0}.legend{display:flex;gap:20px;flex-wrap:wrap;font-size:13px;margin-bottom:20px}.legend span{display:flex;gap:8px;align-items:center}.legend i{display:inline-block;width:12px;height:12px;border-radius:2px}.content{background:var(--teal)}.style{background:var(--blue)}.joint{background:var(--orange)}.chartgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.chartcard{background:#fff;border:1px solid var(--line);border-radius:8px;padding:24px 20px}.chartcard .eyebrow{font-size:11px;margin-bottom:12px}.condition{margin-top:24px}.barrow{display:grid;grid-template-columns:52px 1fr 38px;align-items:center;gap:8px;margin:6px 0;font-size:11px}.barrow b{font-variant-numeric:tabular-nums;font-size:12px;text-align:right}.track{height:10px;background:#edf0ed;border-radius:2px;overflow:hidden}.bar{height:100%}figcaption{margin-top:18px}.note{background:#eaf0ec;border-left:3px solid var(--teal);padding:18px 22px;font-size:15px;margin:24px 0}details{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;margin:26px 0;font-size:14px}summary{cursor:pointer;font-weight:600;color:var(--teal)}.tablewrap{overflow-x:auto}table{width:100%;border-collapse:collapse;margin:20px 0;font-size:12px;text-align:left}td,th{padding:10px;border-bottom:1px solid var(--line);white-space:nowrap}caption{text-align:left;margin-bottom:10px;font-weight:600}.example{background:#fff;padding:26px;border-radius:8px;border:1px solid var(--line);margin:28px 0}.example p:last-child{margin-bottom:0}.output{font:600 15px/1.8 ui-monospace,monospace;overflow-wrap:anywhere}.error{background:#f4dacb;padding:3px;color:#8c3a1f}.routes{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:30px 0}.routes article{border-top:3px solid var(--teal);background:#fff;padding:25px}.routes p{margin-bottom:0}.route{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);display:block;margin-bottom:12px}.steps{padding-left:25px;max-width:880px}.steps li{padding-left:10px;margin-bottom:20px}.twocol{display:grid;grid-template-columns:1fr 1fr;gap:60px}code{font-size:.86em;background:#e6ebe7;padding:3px 5px}footer{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);padding-top:28px;padding-bottom:24px}a:focus-visible,summary:focus-visible{outline:3px solid #bd633d;outline-offset:5px}@media(max-width:850px){.chartgrid{grid-template-columns:1fr}.condition{margin-top:18px}.chartcard{padding:24px}.barrow{grid-template-columns:65px 1fr 45px;font-size:13px}.chartcard h3{display:inline-block;margin-right:15px}.chartcard>.muted{display:inline}.twocol{gap:28px}.sectionhead{align-items:start;flex-direction:column;gap:0}}@media(max-width:600px){header,main,footer{padding-left:20px;padding-right:20px}header{flex-direction:column;align-items:start;gap:14px}main>.hero{padding-top:50px}main>section{padding-top:42px;padding-bottom:42px}.lede{font-size:20px}.routes,.twocol{grid-template-columns:1fr}footer{flex-direction:column}.legend{gap:10px;font-size:11px}.download{margin-bottom:20px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{body{font-size:11pt}header nav,.download{display:none}main>section{padding:25px 0}.chartgrid{grid-template-columns:repeat(3,1fr)}.chartcard{break-inside:avoid;padding:12px}.hero h1{font-size:40pt}}

.checkpointrow{display:grid;grid-template-columns:minmax(13rem,1.4fr) 2fr 3rem;align-items:center;gap:1rem;margin:1rem 0}.checkpointrow .track{min-width:0}.checkpointrow b{text-align:right}#checkpoint-metric{max-width:100%;padding:.65rem;margin:1rem 0;font:inherit}#checkpoint-chart{margin:1.5rem 0}@media(max-width:600px){.checkpointrow{grid-template-columns:1fr 3rem;gap:.4rem}.checkpointrow>span{grid-column:1/-1}}