/* CTRI site stylesheet. Variables come from tokens.css (generated from design/tokens.json).
   The component rules below match the CTRI Design System's components/bundle.css. */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;font:400 1.125rem/1.7 var(--font-sans);color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--red-ink);text-underline-offset:.18em}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:var(--radius-sm)}
.on-ink :focus-visible,.site-header :focus-visible,.site-footer :focus-visible{outline-color:#fff}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;background:#fff;color:var(--ink);padding:.75rem 1rem;z-index:10} .skip:focus{left:0}
.muted{color:var(--muted)} .small{font-size:.9375rem;line-height:1.55}
h1,h2,h3{margin:0 0 .5em;color:inherit}
h1{font-size:clamp(1.9rem,1.3rem + 2.6vw,2.75rem);font-weight:900;line-height:1.08;letter-spacing:-.025em}
h2{font-size:clamp(1.4rem,1.15rem + 1vw,1.8rem);font-weight:900;line-height:1.15;letter-spacing:-.02em}
h3{font-size:1.25rem;font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0 0 1em}
.wrap{width:min(100% - 2rem,var(--wrap));margin-inline:auto}
.measure{max-width:var(--measure)}
.eyebrow{display:block;margin-bottom:.75rem;font-size:.78rem;font-weight:900;line-height:1.2;letter-spacing:.14em;text-transform:uppercase;color:var(--red-ink)}
.on-ink{background:var(--ink);color:#fff} .on-ink .eyebrow{color:var(--red-light)} .on-ink .lede,.on-ink p{color:var(--on-ink)} .on-ink a:not(.btn){color:#fff}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:2.75rem;padding:.55rem 1.25rem;border:2px solid var(--red-ink);border-radius:var(--radius-md);background:var(--red-ink);color:#fff;font:700 1rem/1.2 var(--font-sans);text-decoration:none;cursor:pointer}
.btn:hover{background:var(--ink);border-color:var(--ink);color:#fff}
.btn-ghost{background:transparent;color:var(--red-ink)} .btn-ghost:hover{background:var(--mist);color:var(--ink);border-color:var(--ink)}
.btn-light{background:#fff;border-color:#fff;color:var(--ink)} .btn-light:hover{background:var(--yellow);border-color:var(--yellow);color:var(--ink)}
.btn-outline-light{background:transparent;border-color:#fff;color:#fff} .btn-outline-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-small{min-height:2.25rem;padding:.3rem .9rem;font-size:.9rem}
.actions{display:flex;flex-wrap:wrap;gap:var(--space-3);margin:1.5rem 0}
button.btn[disabled]{opacity:.7;cursor:default}

/* Badges */
.badge{display:inline-block;padding:.2rem .6rem;border-radius:var(--radius-sm);font-size:.8125rem;font-weight:700;line-height:1.2;white-space:nowrap;vertical-align:middle;border:2px solid transparent}
.b-released{background:var(--ink);color:#fff} .b-review{background:var(--yellow);color:var(--ink)} .b-progress{background:var(--orange);color:var(--ink)}
.b-planned{background:var(--mist);color:var(--muted);border:2px dashed var(--muted)} .b-demo{background:var(--sun-tint);color:var(--ink);border-color:var(--ink)}
.chip{display:inline-block;padding:.15rem .7rem;border-radius:var(--radius-sm);background:var(--mist);color:var(--ink);font-size:.875rem;font-weight:700;text-decoration:none}
.chips{display:flex;flex-wrap:wrap;gap:var(--space-2);margin:.75rem 0}

/* Header, footer */
.beta-bar{background:var(--yellow);color:var(--ink);font-size:.9375rem;line-height:1.4;padding:.5rem 0;text-align:center}
.beta-bar .wrap{display:block}
.site-header{background:var(--ink);color:#fff;border-bottom:3px solid var(--red)}
.site-header .wrap{display:flex;align-items:center;gap:1.25rem;min-height:4rem}
.brand{display:block;line-height:0} .brand img{height:1.6rem;width:auto;display:block}
.nav{margin-left:auto;display:flex;align-items:center;gap:.25rem}
.nav a{color:#fff;text-decoration:none;padding:.55rem .75rem;border-radius:var(--radius-sm);font-weight:700;font-size:.95rem;min-height:2.75rem;display:inline-flex;align-items:center}
.nav a:hover{background:#2b2b2b} .nav a[aria-current=page]{box-shadow:inset 0 -3px 0 var(--red);border-radius:0}
.nav .btn{margin-left:.5rem}
.menu-btn{display:none;margin-left:auto;min-width:2.75rem;min-height:2.75rem;border:2px solid #fff;border-radius:var(--radius-md);background:transparent;color:#fff;cursor:pointer;align-items:center;justify-content:center}
.menu-btn svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:2.2;stroke-linecap:round}
@media (max-width:760px){
 .menu-btn{display:inline-flex}
 .site-header .wrap{flex-wrap:wrap;padding-block:.6rem}
 .nav{display:none;flex-basis:100%;flex-direction:column;align-items:stretch;margin:0 0 .5rem;gap:0}
 .nav.open{display:flex}
 .nav a{padding:.7rem .25rem;border-top:1px solid #333} .nav .btn{margin:.75rem 0 0;justify-content:center}
 .nav a[aria-current=page]{box-shadow:none;color:var(--red-light)}
}
.no-js .menu-btn{display:none} .no-js .nav{display:flex!important;flex-wrap:wrap}
.site-footer{background:var(--ink);color:var(--on-ink);border-top:3px solid var(--red);font-size:.9375rem;margin-top:var(--space-20)}
.site-footer a{color:#fff} .site-footer h2{font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--red-light);margin-bottom:.75rem}
.footer-grid{display:grid;gap:2rem;padding:3rem 0 2rem;grid-template-columns:2fr 1fr 1fr}
.footer-grid ul{list-style:none;margin:0;padding:0;display:grid;gap:.4rem}
.footer-cfk{display:flex;align-items:center;gap:.75rem;margin-top:1rem} .footer-cfk img{height:2.5rem;width:auto}
.footer-base{border-top:1px solid #333;padding:1.25rem 0 2rem;display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;justify-content:space-between;color:var(--on-ink)}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr}}

/* Sections */
.section{padding-block:var(--space-12)} @media (min-width:900px){.section{padding-block:var(--space-20)}}
.section-tight{padding-block:var(--space-8)}
.page-head{padding-block:var(--space-12) var(--space-8)} .page-head .lede{margin-bottom:0}
.lede{font-size:1.25rem;line-height:1.6;max-width:var(--measure)}
.crumbs{font-size:.9375rem;margin:0 0 1rem;color:var(--muted)} .crumbs a{color:var(--muted)} .crumbs a:hover{color:var(--ink)}
.on-ink .crumbs,.on-ink .crumbs a{color:var(--on-ink)}

/* Hero: the logo's dot and tapering stem, as shapes */
.hero{position:relative;overflow:hidden;padding-block:var(--space-12) var(--space-20)}
.hero .wrap{position:relative;z-index:1}
.hero h1{font-size:clamp(2.4rem,1.4rem + 4.5vw,4.25rem);line-height:1.02;letter-spacing:-.03em;max-width:13ch}
.hero .lede{margin-top:1.25rem;margin-bottom:0}
.hero-art{position:absolute;right:max(2rem,calc(50% - 560px));top:0;bottom:0;width:min(38vw,380px);pointer-events:none}
.hero-art i{position:absolute;display:block;background:var(--red)}
.hero-art .dot{width:clamp(70px,12vw,120px);aspect-ratio:1;border-radius:var(--radius-pill);right:calc(50% - clamp(35px,6vw,60px));top:clamp(1.5rem,5vw,3rem);background:var(--yellow)}
.hero-art .stem{width:clamp(110px,20vw,190px);right:calc(50% - clamp(55px,10vw,95px));top:clamp(10rem,22vw,15rem);bottom:-2px;clip-path:polygon(14% 0,86% 0,100% 100%,0 100%);border-radius:var(--radius-lg) var(--radius-lg) 0 0}
@media (max-width:700px){.hero-art{display:none}}

/* Cards, grids */
.grid{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fill,minmax(min(100%,19rem),1fr))}
.book-card{display:flex;flex-direction:column;height:100%;padding:1.5rem;border:2px solid var(--ink);border-radius:var(--radius-md);background:var(--paper);color:var(--ink);text-decoration:none}
.book-card:hover{background:var(--mist)} .book-card h3{margin:.1rem 0 .5rem;font-size:1.4rem;font-weight:900} .book-card p{margin:0 0 .5rem}
.book-card .grow{flex:1}
.progress{height:.6rem;border-radius:var(--radius-pill);background:var(--mist);border:1px solid var(--muted);overflow:hidden;display:flex;margin:1rem 0 .5rem}
.progress i{display:block;height:100%;background:var(--red-ink)} .progress i+i{background:var(--orange)}
.three{display:grid;gap:2rem;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr))} .three h3{margin-bottom:.35rem}
.step-num{display:inline-grid;place-items:center;width:2.25rem;height:2.25rem;border-radius:var(--radius-pill);background:var(--red-ink);color:#fff;font-weight:900;margin-bottom:.6rem}
.band{background:var(--mist)}
.donate-band{background:var(--ink);color:#fff;border-radius:var(--radius-md);padding:1.75rem}
.donate-band h2{color:#fff} .donate-band p{color:var(--on-ink);max-width:36rem}

/* Outline */
.outline{list-style:none;margin:0 0 2rem;padding:0;border-top:1px solid var(--line)}
.outline li{display:grid;grid-template-columns:3.2rem minmax(0,1fr) auto;gap:.25rem .75rem;align-items:baseline;padding:.8rem 0;border-bottom:1px solid var(--line)}
.outline .num{font-weight:900;font-variant-numeric:tabular-nums;color:var(--red-ink)}
.outline a{font-weight:700;color:var(--ink);text-decoration:none} .outline a:hover{text-decoration:underline}
.outline .planned .num,.outline .planned .t{color:var(--muted);font-weight:400}
.theme-title{margin-top:2.5rem} .theme-title .tn{color:var(--red-ink)}
.facts{display:flex;flex-wrap:wrap;gap:.25rem 1.25rem;color:var(--muted);font-size:.9375rem;margin:1rem 0 0}
.facts strong{color:var(--ink)}
.note-box{padding:1rem 1.25rem;border:2px dashed var(--muted);border-radius:var(--radius-md);color:var(--ink);background:var(--mist)}

/* Reading */
.reading{display:grid;gap:3rem;grid-template-columns:minmax(0,1fr)}
@media (min-width:960px){.reading.has-side{grid-template-columns:minmax(0,var(--measure)) 16rem;justify-content:space-between;align-items:start}.side{position:sticky;top:1.5rem}}
.prose{max-width:var(--measure)} .prose h2{margin-top:2.25rem} .prose h3{margin-top:1.75rem} .prose ul,.prose ol{padding-left:1.4rem}
.prose li{margin-bottom:.35rem}
.side h2{font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)} .side ol{margin:0;padding:0;list-style:none;display:grid;gap:.1rem}
.side a{display:block;padding:.45rem .6rem;border-radius:var(--radius-sm);color:var(--ink);text-decoration:none;font-size:.9375rem;line-height:1.35} .side a:hover{background:var(--mist)} .side a[aria-current=page]{background:var(--mist);box-shadow:inset 0 -3px 0 var(--red);font-weight:700}
.pager{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--line)}
.pager a{display:block;padding:.75rem 1rem;border:2px solid var(--ink);border-radius:var(--radius-md);color:var(--ink);text-decoration:none;font-weight:700;min-height:2.75rem} .pager a:hover{background:var(--mist)}
.pager small{display:block;font-weight:400;color:var(--muted)}
.block{margin:1.75rem 0;padding:1.1rem 1.25rem 1.25rem;border-radius:var(--radius-md)} .block>:last-child{margin-bottom:0}
.block-label{display:inline-block;margin:0 0 .75rem;padding:.2rem .65rem;border-radius:var(--radius-sm);font-size:.8125rem;font-weight:900;line-height:1.2;letter-spacing:.04em;text-transform:uppercase}
.key-idea{background:var(--red-tint)} .key-idea .block-label{background:var(--red-ink);color:#fff}
.worked{background:var(--mist)} .worked .block-label{background:var(--ink);color:#fff}
.story{background:var(--sun-tint)} .story .block-label{background:var(--yellow);color:var(--ink)}
.question{background:var(--paper);border:2px solid var(--ink)} .question .block-label{background:var(--paper);color:var(--ink);border:2px solid var(--ink)}
.question .meta{margin-left:.5rem;font-size:.875rem;color:var(--muted)}
details.solution{margin-top:1rem} details.solution summary{cursor:pointer;font-weight:700;color:var(--red-ink);min-height:2.75rem;display:flex;align-items:center}
details.solution>div{padding:.75rem 1rem;background:var(--mist);border-radius:var(--radius-md)} .question details.solution>div>:last-child{margin-bottom:0}
.figure{margin:1.75rem 0} .figure img{display:block;max-width:100%;height:auto;border-radius:var(--radius-md);background:#fff;border:1px solid var(--line)}
.figure figcaption{margin-top:.5rem;font-size:.9375rem;color:var(--muted)}
.figure-box{padding:2rem 1rem;border:2px dashed var(--muted);border-radius:var(--radius-md);text-align:center;color:var(--muted)}
.prose table,.prose .scroll{display:block;overflow-x:auto} table{border-collapse:collapse;margin:1.25rem 0;max-width:100%} th,td{border:1px solid var(--line);padding:.45rem .8rem;text-align:left} th{background:var(--mist)}
.math-display{overflow-x:auto;overflow-y:hidden;margin:1.1rem 0;padding:.25rem 0} .katex{font-size:1.1em}
.math-error{background:var(--red-tint);color:var(--red-ink);padding:0 .3rem;border-radius:var(--radius-sm)}
.fnref a{text-decoration:none;font-weight:700;padding:0 .15rem} .footnotes{margin-top:2.5rem;padding-top:1rem;border-top:1px solid var(--line);font-size:.9375rem;color:var(--muted)}
.demo-notice{padding:.75rem 1rem;border:2px solid var(--ink);border-radius:var(--radius-md);background:var(--sun-tint);color:var(--ink);font-size:.9375rem;margin:0 0 1.5rem}
.on-ink .demo-notice p{color:var(--ink)}
.prose :target{background:var(--yellow)}
#search{margin-top:1rem}
:root{--pagefind-ui-scale:1;--pagefind-ui-primary:#c40600;--pagefind-ui-text:#171717;--pagefind-ui-background:#fefefe;--pagefind-ui-border:#666666;--pagefind-ui-tag:#f4f4f4;--pagefind-ui-border-width:2px;--pagefind-ui-border-radius:8px;--pagefind-ui-font:Lato,Helvetica,Arial,sans-serif}
@media print{.site-header,.site-footer,.beta-bar,.working-bar,.side,.pager,.actions,.menu-btn,.nav{display:none!important}body{font-size:11pt}.on-ink{background:none;color:#000}}

/* people, credits, version history, working draft banner */
.working-bar{background:var(--ink);color:#fff;font-size:.9375rem;line-height:1.4;padding:.5rem 0;text-align:center;border-bottom:4px solid var(--red)}
.working-bar .wrap{display:block}
.credits{margin:0 0 1rem}
.credits dt{font-weight:900;margin-top:.75rem}
.credits dd{margin:.15rem 0 0}
.history{list-style:none;padding:0}
.history li{margin:0 0 .75rem}
.people{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.people li{padding:.8rem 0;border-bottom:1px solid var(--line)}