:root{--paper:#f6f7f5;--raise:#fff;--sunk:#eceee9;--ink:#14181a;--ink-2:#414a4c;--ink-3:#6d7679;--rule:#dfe3dd;--rule-2:#c6cdc4;--teal:#0a4f5c;--teal-2:#e3eeef;--ochre:#a8620a;--ochre-2:#f6ead9;--flag:#a5321d;--flag-2:#f8e6e2;--good:#14634a;--good-2:#e2efe9;--f-d:ui-serif,"New York","Iowan Old Style","Palatino Linotype",Palatino,"Noto Serif",Georgia,serif;--f-u:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--f-m:ui-monospace,"SF Mono","JetBrains Mono","Roboto Mono",Menlo,Consolas,monospace;--gut:clamp(1.15rem,4vw,2.75rem);--shadow:0 1px 1px rgba(20,24,26,.04),0 10px 30px -22px rgba(20,24,26,.35)}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--paper:#101312;--raise:#171b1a;--sunk:#1e2322;--ink:#e8ebe6;--ink-2:#b0b7b3;--ink-3:#838c88;--rule:#262c2a;--rule-2:#384040;--teal:#7fc9d4;--teal-2:#10302f;--ochre:#e0a052;--ochre-2:#33240f;--flag:#f09480;--flag-2:#351d18;--good:#74d3ae;--good-2:#10302a;--shadow:0 1px 1px rgba(0,0,0,.4),0 12px 34px -22px rgba(0,0,0,.85)}}:root[data-theme=dark]{--paper:#101312;--raise:#171b1a;--sunk:#1e2322;--ink:#e8ebe6;--ink-2:#b0b7b3;--ink-3:#838c88;--rule:#262c2a;--rule-2:#384040;--teal:#7fc9d4;--teal-2:#10302f;--ochre:#e0a052;--ochre-2:#33240f;--flag:#f09480;--flag-2:#351d18;--good:#74d3ae;--good-2:#10302a;--shadow:0 1px 1px rgba(0,0,0,.4),0 12px 34px -22px rgba(0,0,0,.85)}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;background:var(--paper);color:var(--ink);font-family:var(--f-u);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit}:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:2px}::selection{background:var(--ochre-2)}.shell{max-width:1080px;margin:0 auto;padding-inline:var(--gut)}.eyebrow{font-family:var(--f-m);font-size:.69rem;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-3)}.act{display:inline-flex;align-items:center;gap:.45rem;font:500 .9rem/1 var(--f-u);padding:.68rem 1.05rem;border:1px solid var(--rule-2);border-radius:3px;background:var(--raise);color:var(--ink);cursor:pointer;text-decoration:none;transition:border-color .12s,color .12s,background .12s}.act:hover{border-color:var(--ink-3)}.act:disabled{opacity:.5;cursor:not-allowed}.act--go{background:var(--ochre);color:#fff;font-weight:600}.act--go,.act--go:hover{border-color:var(--ochre)}.act--go:hover{filter:brightness(1.07)}.act--wide{width:100%;justify-content:center}.act--sm{padding:.42rem .7rem;font-size:.8rem}.wt,.wt__row{display:grid}.wt__row{grid-template-columns:1.6rem minmax(0,1fr) 3.1rem;grid-gap:0 .8rem;gap:0 .8rem;align-items:baseline;padding:.58rem 0;border-bottom:1px solid var(--rule)}.wt__row:last-child{border-bottom:0}.wt__rank{font-family:var(--f-m);font-size:.74rem;color:var(--ink-3);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.wt__name{font-size:.93rem;font-weight:500}.wt__note{display:block;font-size:.78rem;color:var(--ink-3);font-weight:400;margin-top:.1rem}.wt__bar{grid-column:2/4;height:3px;background:var(--sunk);margin-top:.42rem;overflow:hidden}.wt__fill{display:block;height:100%;background:var(--ochre);transform-origin:left;animation:grow .85s cubic-bezier(.22,.7,.3,1) both}.wt__n{font-family:var(--f-m);font-size:.8rem;text-align:right;color:var(--ink-2);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}@keyframes grow{0%{transform:scaleX(0)}to{transform:scaleX(1)}}@media (prefers-reduced-motion:reduce){.wt__fill{animation:none}}.masthead{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-block:1.4rem 1.1rem;border-bottom:1px solid var(--ink)}.wordmark{font:500 1.02rem/1 var(--f-d);letter-spacing:-.01em;text-decoration:none}.wordmark em{font-style:italic;color:var(--teal)}.thesis{padding-block:clamp(2.2rem,6vw,3.6rem) 1.2rem}.thesis h1{font-family:var(--f-d);font-size:clamp(1.95rem,4.6vw,3.05rem);font-weight:500;line-height:1.08;letter-spacing:-.018em;margin:.7rem 0 0;max-width:19ch}.thesis h1 em{font-style:italic;color:var(--teal)}.thesis__sub{margin:1rem 0 0;max-width:54ch;font-size:1.02rem;color:var(--ink-2)}.ledger{margin-top:2.4rem}.ledger__head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-bottom:.55rem;border-bottom:1px solid var(--ink)}.ledger__title{font:500 1.05rem/1.2 var(--f-d)}.ledger__cols{display:grid;grid-template-columns:1fr;grid-gap:2.6rem;gap:2.6rem;margin-top:1.1rem}@media (min-width:860px){.ledger__cols{grid-template-columns:1.25fr 1fr}}.ledger__caption{margin:1.4rem 0 0;font-size:.84rem;color:var(--ink-3);max-width:62ch}.start{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;margin-top:2.2rem}.start__note{font-size:.86rem;color:var(--ink-3)}.band{padding-block:clamp(2.6rem,6vw,4rem);border-top:1px solid var(--rule)}.band__title{font:500 1.35rem/1.2 var(--f-d);margin:.5rem 0 1.4rem}.cols2{display:grid;grid-gap:1.6rem 2.6rem;gap:1.6rem 2.6rem}@media (min-width:760px){.cols2{grid-template-columns:1fr 1fr}}.note h3{font-size:.96rem;font-weight:600;margin:0 0 .35rem}.note p{margin:0;font-size:.91rem;color:var(--ink-2);max-width:46ch}.note code{font-family:var(--f-m);font-size:.85em;background:var(--sunk);padding:.06em .3em;border-radius:2px}.access{display:grid;grid-gap:1.8rem;gap:1.8rem;align-items:start}@media (min-width:760px){.access{grid-template-columns:1fr 1fr}}.access ul{margin:0;padding-left:1.05rem;font-size:.91rem;color:var(--ink-2)}.access li{margin:.3rem 0}.access li b{color:var(--ink)}.colophon{padding-block:2rem 3.5rem;border-top:1px solid var(--rule);font-size:.82rem;color:var(--ink-3);max-width:68ch}.colophon p{margin:0 0 .7rem}.colophon b{color:var(--ink-2)}.chrome{position:-webkit-sticky;position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--paper) 93%,transparent);-webkit-backdrop-filter:saturate(1.4) blur(9px);backdrop-filter:saturate(1.4) blur(9px);border-bottom:1px solid var(--rule)}.chrome__bar{max-width:1080px;margin:0 auto;padding:.6rem var(--gut);display:flex;align-items:center;gap:.55rem;flex-wrap:wrap}.find{flex:1 1;min-width:8rem;max-width:17rem;font:400 .87rem/1 var(--f-u);padding:.5rem .65rem;border:1px solid var(--rule-2);border-radius:3px;background:var(--raise);color:var(--ink)}.find::placeholder{color:var(--ink-3)}.crumbs{display:flex;gap:.5rem;align-items:center}.rail{max-width:1080px;margin:0 auto;padding:0 var(--gut) .5rem;display:flex;gap:.15rem;overflow-x:auto;scrollbar-width:none}.rail::-webkit-scrollbar{display:none}.rail__tab{border:0;background:none;cursor:pointer;font:500 .85rem/1 var(--f-u);color:var(--ink-3);padding:.5rem .6rem;white-space:nowrap;border-bottom:2px solid transparent;transition:color .12s,border-color .12s}.rail__tab:hover{color:var(--ink)}.rail__tab[aria-current=true]{color:var(--ink);border-bottom-color:var(--ochre)}.meter{max-width:1080px;margin:0 auto;padding:.45rem var(--gut);display:flex;align-items:center;gap:.7rem;flex-wrap:wrap;border-top:1px solid var(--rule)}.meter__txt{font-family:var(--f-m);font-size:.72rem;color:var(--ink-2);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;white-space:nowrap}.meter__track{flex:1 1;min-width:5rem;height:2px;background:var(--sunk)}.meter__fill{display:block;height:100%;background:var(--good);transition:width .25s}.meter__reset{border:0;background:none;cursor:pointer;font:400 .72rem/1 var(--f-u);color:var(--ink-3);text-decoration:underline;text-underline-offset:2px;padding:.2rem}.meter__reset:hover{color:var(--flag)}.page{max-width:1080px;margin:0 auto;padding:1.4rem var(--gut) 5rem}.notice{display:flex;gap:1rem;align-items:center;justify-content:space-between;flex-wrap:wrap;border-left:2px solid var(--teal);background:var(--teal-2);padding:.85rem 1rem;margin-bottom:1.5rem;font-size:.89rem;color:var(--ink-2)}.notice b{color:var(--ink)}.entry{border-bottom:1px solid var(--rule)}.entry__head{width:100%;display:flex;gap:.7rem;align-items:baseline;flex-wrap:wrap;padding:.95rem 0;background:none;border:0;cursor:pointer;text-align:left;color:inherit;font:inherit}.entry__head:hover .entry__title{color:var(--teal)}.entry__mark{font-family:var(--f-m);font-size:.72rem;color:var(--ink-3);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;min-width:1.5rem}.entry__title{font-size:.97rem;font-weight:600;flex:1 1;min-width:12rem;transition:color .12s}.entry__title em{font-style:normal;font-weight:400;color:var(--ink-3)}.entry__meta{font-family:var(--f-m);font-size:.72rem;color:var(--ink-3)}.entry__body{padding:0 0 1.6rem}.tag{font-family:var(--f-m);font-size:.63rem;font-weight:500;letter-spacing:.05em;text-transform:uppercase;padding:.17rem .38rem;border-radius:2px;white-space:nowrap}.tag--must{background:var(--flag-2);color:var(--flag)}.tag--imp{background:var(--ochre-2);color:var(--ochre)}.tag--wor{background:var(--teal-2);color:var(--teal)}.tag--opt{background:var(--sunk);color:var(--ink-3)}.tag--e{background:var(--good-2);color:var(--good)}.tag--m{background:var(--ochre-2);color:var(--ochre)}.tag--h{background:var(--flag-2);color:var(--flag)}.tag--lock{background:var(--sunk)}.entry--locked .entry__title,.tag--lock{color:var(--ink-3)}.locked__body{padding:0 0 1.4rem;display:flex;gap:1rem;align-items:center;flex-wrap:wrap}.locked__body p{margin:0;font-size:.88rem;color:var(--ink-3)}.cutoff{position:relative;margin-top:-2.2rem;padding-top:3.4rem}.cutoff__veil{position:absolute;inset:0 0 auto;height:3.2rem;pointer-events:none;background:linear-gradient(to bottom,transparent,var(--paper))}.cutoff p{margin:0 0 .9rem;font-size:.89rem;color:var(--ink-2);max-width:48ch}.q{border-top:1px solid var(--rule)}.q:first-of-type{border-top:0}.q>summary{list-style:none;cursor:pointer;padding:.62rem 0;display:flex;gap:.6rem;align-items:flex-start;font-size:.89rem}.q>summary::-webkit-details-marker{display:none}.q>summary:hover{color:var(--teal)}.q__n{font-family:var(--f-m);font-size:.72rem;color:var(--ink-3);min-width:1.9rem;padding-top:.12rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.q__text{flex:1 1}.q__title{flex:1 1;min-width:11rem;font-weight:600}.q__title em{font-style:normal;font-weight:400;color:var(--ink-3)}.tick{width:14px;height:14px;accent-color:var(--good);cursor:pointer;flex:none;margin-top:.28rem}.answer{border-left:2px solid var(--good);background:var(--good-2);padding:.1rem .85rem .7rem;margin:0 0 .7rem}.answer__label{font-family:var(--f-m);font-size:.62rem;letter-spacing:.08em;text-transform:uppercase;color:var(--good);padding-top:.55rem}.solve{padding:.1rem 0 1rem}.doc h1,.doc h2,.doc h3,.doc h4,.doc h5{font-family:var(--f-d);font-weight:500;line-height:1.22;letter-spacing:-.008em}.doc h1{font-size:1.42rem;margin:2rem 0 .7rem;padding-bottom:.3rem;border-bottom:1px solid var(--rule)}.doc h2{font-size:1.18rem;margin:1.7rem 0 .55rem}.doc h3{font-size:1rem;margin:1.35rem 0 .45rem}.doc h3,.doc h4,.doc h5{font-family:var(--f-u);font-weight:600}.doc h4,.doc h5{font-size:.92rem;margin:1.1rem 0 .4rem}.doc p{margin:.62rem 0;max-width:72ch}.doc ol,.doc ul{margin:.5rem 0;padding-left:1.25rem}.doc li{margin:.22rem 0}.doc blockquote{margin:.95rem 0;padding:.1rem 0 .1rem .95rem;border-left:2px solid var(--ochre);color:var(--ink-2)}.doc blockquote p{margin:.45rem 0}.doc hr{border:0;border-top:1px solid var(--rule);margin:1.5rem 0}.doc a{color:var(--teal);text-underline-offset:2px}.doc strong{font-weight:600}.doc code{font-family:var(--f-m);font-size:.86em;background:var(--sunk);padding:.07em .3em;border-radius:2px}.tw{overflow-x:auto;margin:.95rem 0;border:1px solid var(--rule)}.doc table{border-collapse:collapse;width:100%;font-size:.84rem;min-width:30rem}.doc th{text-align:left;font-family:var(--f-m);font-size:.64rem;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3);padding:.5rem .62rem;border-bottom:1px solid var(--rule-2);background:var(--sunk)}.doc td{padding:.46rem .62rem;border-bottom:1px solid var(--rule);vertical-align:top}.doc tbody tr:last-child td{border-bottom:0}.codewrap{position:relative;margin:.8rem 0}.doc pre{background:#12181a;color:#dde5e3;border-radius:3px;padding:.85rem .95rem;overflow-x:auto;margin:0;font-family:var(--f-m);font-size:.78rem;line-height:1.62;-moz-tab-size:4;tab-size:4}.doc pre code{background:none;padding:0;color:inherit;font:inherit}.cp{position:absolute;top:.35rem;right:.35rem;font:400 .66rem/1 var(--f-m);padding:.26rem .45rem;border-radius:2px;border:1px solid hsla(0,0%,100%,.16);background:hsla(0,0%,100%,.07);color:#b9c4c1;cursor:pointer;opacity:0;transition:opacity .12s}.codewrap:hover .cp,.cp:focus{opacity:1}.cp:hover{background:hsla(0,0%,100%,.14);color:#fff}.blk{margin:.95rem 0}.blk>h5{margin:0 0 .32rem;font-family:var(--f-m);font-size:.63rem;font-weight:500;letter-spacing:.09em;text-transform:uppercase}.h-stmt{color:var(--teal)}.h-idea{color:var(--ochre)}.h-brute{color:var(--ink-3)}.h-opt{color:var(--good)}.h-trap{color:var(--flag)}.stmt{margin:0;font-size:.91rem}.idea{font-size:.9rem;border-left:2px solid var(--ochre)}.idea,.trapb{margin:0;padding:.1rem 0 .1rem .9rem}.trapb{font-size:.88rem;border-left:2px solid var(--flag)}.why{margin:0 0 .35rem;font-size:.86rem;color:var(--ink-2)}.cx{display:inline-flex;gap:.35rem;flex-wrap:wrap;margin-top:.4rem}.cx span{font-family:var(--f-m);font-size:.68rem;color:var(--ink-3);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.cx b{color:var(--ink-2);font-weight:500}.blank{padding:4rem 0;text-align:center;color:var(--ink-3);font-size:.9rem}.scrim{position:fixed;inset:0;z-index:90;background:rgba(16,19,18,.5);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;padding:1.2rem}.sheet{position:relative;width:100%;max-width:25rem;background:var(--raise);border:1px solid var(--rule-2);border-radius:4px;padding:1.7rem;box-shadow:var(--shadow)}.sheet__x{position:absolute;top:.5rem;right:.65rem;border:0;background:none;cursor:pointer;font-size:1.3rem;line-height:1;color:var(--ink-3);padding:.3rem}.sheet__x:hover{color:var(--ink)}.sheet__price{font-family:var(--f-d);font-size:2.5rem;font-weight:500;line-height:1;margin:.4rem 0 .2rem;letter-spacing:-.02em}.sheet__once{font-size:.84rem;color:var(--ink-3);margin:0 0 1.2rem}.sheet ul{margin:0 0 1.3rem;padding-left:1.05rem;font-size:.88rem;color:var(--ink-2)}.sheet li{margin:.28rem 0}.sheet li b{color:var(--ink)}.sheet__fine{font-size:.78rem;color:var(--ink-3);text-align:center;margin:.8rem 0 0}.alarm{background:var(--flag-2);color:var(--flag);border-left:2px solid var(--flag);padding:.6rem .75rem;font-size:.85rem;margin:0 0 .9rem}.pass{font-family:var(--f-m);font-size:.66rem;letter-spacing:.04em;padding:.3rem .5rem;border-radius:2px;background:var(--good-2);color:var(--good);border:1px solid color-mix(in srgb,var(--good) 35%,transparent);white-space:nowrap}.swap{display:grid;grid-template-columns:1fr 1fr;grid-gap:0;gap:0;margin:0 0 1.4rem;border:1px solid var(--rule-2);border-radius:3px;overflow:hidden}.swap button{font:500 .82rem/1 var(--f-u);padding:.6rem .5rem;background:none;border:0;color:var(--ink-3);cursor:pointer}.swap button+button{border-left:1px solid var(--rule-2)}.swap button[aria-selected=true]{background:var(--rule);color:var(--ink)}.swap button:hover{color:var(--ink)}.sheet__h{font-size:1.15rem;margin:.1rem 0 .3rem;letter-spacing:-.01em}.sheet .steps{margin:0 0 .3rem;padding-left:1.15rem;font-size:.88rem;color:var(--ink-2)}.sheet .steps>li{margin:0 0 1rem;padding-left:.15rem}.sheet .steps>li::marker{color:var(--ink-3);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.sheet .steps span{display:block;margin-bottom:.5rem}.sheet .steps code{font:500 .84em var(--f-m);background:var(--rule);padding:.1rem .3rem;border-radius:2px}.upi{display:flex;align-items:center;justify-content:space-between;gap:.6rem;width:100%;margin:0 0 .55rem;padding:.55rem .7rem;cursor:pointer;background:var(--rule);border:1px dashed var(--rule-2);border-radius:3px;text-align:left}.upi:hover{border-color:var(--ink-3)}.upi code{font:600 .9rem var(--f-m);color:var(--ink);background:none;padding:0}.upi em{font:500 .7rem/1 var(--f-u);font-style:normal;color:var(--ink-3);flex:none}.qr{display:block;width:13.5rem;max-width:100%;height:auto;margin:.8rem auto .2rem;background:#fff;padding:.4rem}.codebox,.qr{border:1px solid var(--rule-2);border-radius:3px}.codebox{width:100%;margin:0 0 .9rem;padding:.8rem .85rem;font:600 1.02rem/1 var(--f-m);letter-spacing:.09em;text-align:center;text-transform:uppercase;color:var(--ink);background:var(--bg)}.codebox:focus-visible{outline:2px solid var(--ochre);outline-offset:1px;border-color:var(--ochre)}.codebox::placeholder{color:var(--ink-3);letter-spacing:.09em;opacity:.55}.lnk{background:none;border:0;padding:0;cursor:pointer;font:inherit;color:var(--ochre);text-decoration:underline;text-underline-offset:2px}.lnk:hover{filter:brightness(1.15)}@media (prefers-reduced-motion:reduce){.lnk,.swap button,.upi{transition:none}}