/* Bureau St. James, v3. The public interface of a working system: black on white, set on a grid.
   Colour lives only on the spines. Every element is a statement, a figure, a table or a control.
   Nothing fades in; every action answers at once. */

:root{
  --paper:#ffffff;--ink:#0b0b0b;--ink2:#3d3d3d;--dim:#8a8a8a;--rule:rgba(11,11,11,.14);--rule2:rgba(11,11,11,.07);
  --sans:"Inter",ui-sans-serif,system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;--serif:"EB Garamond",Georgia,serif;
  --gut:clamp(20px,5vw,80px);--max:1320px;--measure:34em;
}
*{box-sizing:border-box;margin:0;padding:0}
html{background:var(--paper);-webkit-text-size-adjust:100%}
body{background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:18px;line-height:1.55;font-feature-settings:"ss01","cv11";-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
a{color:inherit}
img{display:block;max-width:100%}
::selection{background:var(--ink);color:var(--paper)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gut)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-9999px;top:8px;z-index:100;background:var(--ink);color:var(--paper);padding:8px 12px;font-size:12px}
.skip:focus{left:8px}

/* the load bar: the click is answered in the same frame; the next dataset loads behind it */
.ld{position:fixed;left:0;top:0;right:0;height:2px;z-index:2147483000;pointer-events:none;background:var(--ink);transform:scaleX(0);transform-origin:0 50%}
html.loading .ld{transform:scaleX(.9);transition:transform 1.6s cubic-bezier(.08,.7,.2,1)}

/* labels: cold, precise, small */
.t{font-size:11px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--ink)}
.t.dim{color:var(--dim)}

/* the bar */
.bar{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:20px var(--gut);background:transparent}
.bar.solid{background:var(--paper);box-shadow:0 1px 0 var(--rule)}
.mark{display:flex;align-items:center;gap:12px;text-decoration:none}
.mk{display:block;width:12px;height:21px;background:currentColor;-webkit-mask:url(img/brand/cross.png) center/contain no-repeat;mask:url(img/brand/cross.png) center/contain no-repeat}
.mark span{font-family:var(--serif);font-weight:500;font-size:21px;letter-spacing:.01em}
.navl{display:flex;gap:clamp(16px,2.6vw,38px);align-items:center}
.navl a{font-size:14px;font-weight:500;text-decoration:none;color:var(--ink2)}
.navl a:hover,.navl a[aria-current]{color:var(--ink)}
.navl a[aria-current]{text-decoration:underline;text-underline-offset:6px;text-decoration-thickness:1px}
.navl a.cta{font-size:13px;color:var(--paper);background:var(--ink);padding:.8em 1.2em}
.navl a.cta:hover{background:#333}
.cta-s{display:none}
@media(max-width:720px){.bar{padding:14px 16px}.navl a:not(.cta){display:none}.navl a.cta{font-size:12px;padding:.7em .9em}.cta-l{display:none}.cta-s{display:inline}.mark span{font-size:17px;white-space:nowrap}}

/* ===== threshold: type alone ===== */
.th2{min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:center;padding:clamp(110px,16vh,160px) var(--gut) clamp(60px,10vh,100px);max-width:var(--max);margin:0 auto}
.th2 h1{font-weight:500;font-size:clamp(64px,11.5vw,184px);line-height:.9;letter-spacing:-.05em}
.th2 h1 span{display:block}
.th2 .def{font-weight:300;font-size:clamp(24px,2.6vw,40px);line-height:1.18;letter-spacing:-.015em;max-width:24ch;margin-top:clamp(26px,4vh,44px)}
.th2 .who{margin-top:clamp(40px,7vh,72px);padding-top:18px;border-top:1px solid var(--ink);max-width:880px}
.th2 .who p{font-size:clamp(17px,1.4vw,20px);color:var(--ink2)}
.th2 .go{margin-top:clamp(36px,7vh,70px);display:inline-flex;align-items:center;gap:14px;text-decoration:none;font-size:16px}
.th2 .go:hover .t{text-decoration:underline;text-underline-offset:5px}
@media(max-width:560px){.th2 h1{font-size:clamp(46px,12.4vw,64px)}}

/* ===== sections ===== */
.sec{padding:clamp(100px,14vh,170px) 0}
.sec h2{font-weight:500;font-size:clamp(42px,5.6vw,88px);line-height:1;letter-spacing:-.035em;margin-top:18px;max-width:16ch}
.lede{font-size:clamp(20px,1.7vw,25px);line-height:1.5;color:var(--ink2);max-width:36em;margin-top:24px;letter-spacing:-.005em}
.btn{display:inline-flex;align-items:center;gap:14px;margin-top:34px;font-size:12px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;text-decoration:none;color:var(--paper);background:var(--ink);padding:18px 26px;border:0;cursor:pointer}
.btn:hover{background:#333}
.btn.ghost{background:none;color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.btn.ghost:hover{background:var(--ink);color:var(--paper)}
.btn:disabled{opacity:.25;cursor:not-allowed}
@media(min-width:561px){.nw{white-space:nowrap}}

/* status */
.st{font-size:10px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;display:inline-flex;align-items:center;gap:8px}
.st::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.st-active{color:var(--ink)}
.st-prototype::before{background:none;box-shadow:inset 0 0 0 1px currentColor}
.st-archive{color:var(--dim)}

/* ===== the index: a query, then the shelf ===== */
.qb{display:flex;flex-wrap:wrap;align-items:stretch;margin-top:clamp(40px,6vw,70px);border:1px solid var(--ink)}
.qb-l{display:flex;align-items:center;padding:0 16px;font-size:11px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;background:var(--ink);color:var(--paper)}
.qb button{background:none;border:0;border-right:1px solid var(--rule);font:500 12px/1 var(--sans);letter-spacing:.04em;color:var(--ink);padding:14px 14px;cursor:pointer}
.qb button i{font-style:normal;color:var(--dim);margin-left:5px;font-variant-numeric:tabular-nums}
.qb button:hover{background:#efefef}
.qb button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.qb button[aria-pressed="true"] i{color:#9a9a9a}
.qb-s{width:3px;background:var(--ink)}
.qb-o{margin-left:auto;display:flex;align-items:center;padding:0 16px;font-size:12px;font-weight:500;letter-spacing:.04em;color:var(--ink2);font-variant-numeric:tabular-nums}
@media(max-width:820px){.qb-s{display:none}.qb button{border-bottom:1px solid var(--rule)}.qb-o{width:100%;margin-left:0;padding:11px 14px}}

/* the shelf: serialized volumes, printed matte, on one line */
.gd{display:flex;gap:4px;height:clamp(460px,62vh,620px);margin-top:18px;border-bottom:3px solid var(--ink)}
.pvn{position:relative;flex:1 1 0;min-width:0;overflow:hidden;display:flex;flex-direction:column;text-decoration:none;color:var(--sf);background-color:var(--sp);
  background-image:repeating-linear-gradient(0deg,rgba(0,0,0,.035) 0 1px,transparent 1px 3px),repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 3px);
  transition:flex-grow .18s linear,opacity .1s linear}
.pvn-hd{flex:none;height:54px;display:flex;align-items:center;justify-content:center;border-bottom:1px solid color-mix(in srgb,var(--sf) 38%,transparent)}
.pvn-hd i{display:block;width:10px;height:18px;background:var(--sf);-webkit-mask:url(img/brand/cross.png) center/contain no-repeat;mask:url(img/brand/cross.png) center/contain no-repeat}
.pvn-tx{flex:1 1 auto;min-height:0;display:block;padding:18px 0 0}
.pvn-t{display:block;writing-mode:vertical-rl;font-weight:500;font-size:clamp(19px,1.55vw,24px);line-height:1;letter-spacing:-.01em;white-space:nowrap;margin:0 auto}
.pvn-a,.pvn-m2{display:none}
.pvn-k{font-size:10px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;opacity:.85}
.pvn .st{color:var(--sf)}
.pvn-ft{flex:none;height:66px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;border-top:1px solid color-mix(in srgb,var(--sf) 38%,transparent);font-size:21px;font-weight:500;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.pvn-ft span{font-size:9px;letter-spacing:.16em;text-transform:uppercase;opacity:.8}
.gd:hover .pvn{flex-grow:.7}
.gd .pvn:hover,.gd .pvn:focus-visible,.gd:not(:hover) .pvn.open{flex-grow:3.4}
.gd .pvn:hover .pvn-tx,.gd .pvn:focus-visible .pvn-tx,.gd:not(:hover) .pvn.open .pvn-tx{padding:22px 22px 0}
.gd .pvn:hover .pvn-t,.gd .pvn:focus-visible .pvn-t,.gd:not(:hover) .pvn.open .pvn-t{writing-mode:horizontal-tb;white-space:normal;font-size:clamp(28px,2.4vw,40px);line-height:1.02;letter-spacing:-.03em;margin:0}
.gd .pvn:hover .pvn-a,.gd .pvn:focus-visible .pvn-a,.gd:not(:hover) .pvn.open .pvn-a{display:block;margin-top:14px;font-size:15px;line-height:1.45}
.gd .pvn:hover .pvn-m2,.gd .pvn:focus-visible .pvn-m2,.gd:not(:hover) .pvn.open .pvn-m2{display:flex;gap:16px;align-items:center;margin-top:14px}
.gd .pvn:hover .pvn-ft,.gd .pvn:focus-visible .pvn-ft,.gd:not(:hover) .pvn.open .pvn-ft{flex-direction:row;align-items:baseline;justify-content:flex-start;gap:8px;padding:0 22px}
.gd .pvn.off{opacity:.12;pointer-events:none}
.pvn:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.key{display:flex;flex-wrap:wrap;gap:10px 34px;margin-top:22px}
.key>span{display:inline-flex;align-items:center;gap:10px}
.key em{font-style:normal;font-size:14px;color:var(--dim)}
@media(max-width:900px){
  .gd{flex-direction:column;height:auto;gap:4px;border-bottom:0}
  .gd .pvn,.gd:hover .pvn,.gd .pvn:hover,.gd:not(:hover) .pvn.open{flex:none;flex-direction:row}
  .pvn-hd{width:46px;height:auto;border-bottom:0;border-right:1px solid color-mix(in srgb,var(--sf) 38%,transparent)}
  .gd .pvn .pvn-tx,.gd .pvn:hover .pvn-tx,.gd:not(:hover) .pvn.open .pvn-tx{flex:1 1 auto;padding:18px 16px}
  .gd .pvn .pvn-t,.gd .pvn:hover .pvn-t,.gd:not(:hover) .pvn.open .pvn-t{writing-mode:horizontal-tb;white-space:normal;font-size:24px;line-height:1.08;letter-spacing:-.02em;margin:0}
  .gd .pvn .pvn-a{display:block;margin-top:8px;font-size:15px;line-height:1.45}
  .gd .pvn .pvn-m2{display:flex;gap:14px;align-items:center;margin-top:10px}
  .gd .pvn .pvn-ft,.gd .pvn:hover .pvn-ft,.gd:not(:hover) .pvn.open .pvn-ft{width:62px;height:auto;flex-direction:column;align-items:center;justify-content:center;padding:0;border-top:0;border-left:1px solid color-mix(in srgb,var(--sf) 38%,transparent)}
}

/* ===== a thesis, typeset to carry load ===== */
.ths{margin-top:28px;border-top:3px solid var(--ink);padding-top:14px;max-width:1040px}
.ths-k{display:flex;justify-content:space-between;gap:8px 20px;flex-wrap:wrap;font-size:11px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--ink2)}
.ths-q{margin-top:22px;font-size:clamp(32px,4vw,64px);font-weight:500;line-height:1.04;letter-spacing:-.04em;max-width:20ch}

/* ===== the assembly ===== */
.math{display:flex;flex-wrap:wrap;align-items:baseline;gap:.25em .45em;margin-top:clamp(30px,5vw,56px);font-weight:500;font-size:clamp(34px,4.8vw,76px);line-height:1.04;letter-spacing:-.035em}
.math i{font-style:normal;font-weight:300;font-size:.38em;color:var(--dim);transform:translateY(-.3em)}
.phase{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3.4vw,52px);margin-top:clamp(56px,8vw,100px)}
.phase div{padding-top:20px;border-top:1px solid var(--ink)}
.phase h3{font-weight:500;font-size:clamp(28px,2.4vw,38px);line-height:1.08;letter-spacing:-.025em;margin-top:12px}
.phase p{margin-top:12px;color:var(--ink2);max-width:30ch;line-height:1.55}
@media(max-width:820px){.phase{grid-template-columns:1fr}}
.plan{margin:clamp(60px,8vw,100px) 0 0}
.plan svg{width:100%;height:auto;display:block;overflow:visible}
.plan figcaption{display:flex;justify-content:space-between;gap:8px 20px;flex-wrap:wrap;margin-top:14px;padding-top:12px;border-top:1px solid var(--rule);font-size:11px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--ink2)}
.plan text{font-family:var(--sans);font-size:16px;font-weight:500;fill:var(--ink)}
.plan text.n{font-size:12px;letter-spacing:.14em;fill:var(--dim)}
.plan .w path{fill:none;stroke:var(--ink);stroke-width:6;stroke-linecap:square}
.plan .d path{fill:none;stroke:var(--ink);stroke-width:1.5}
.plan .d .sw{stroke-width:1;stroke-dasharray:4 4}
.plan .tb>rect:first-child{fill:none;stroke:var(--ink);stroke-width:1.5}
.plan .m{fill:var(--ink)}
.plan .y{fill:var(--paper);stroke:var(--ink);stroke-width:1.5}
.plan .p{fill:var(--paper);stroke:var(--ink);stroke-width:3.5}
.plan .col{fill:var(--ink)}
.plan .gl{fill:none;stroke:var(--ink);stroke-width:1;stroke-dasharray:14 6 3 6;opacity:.5}
.plan .rt{fill:none;stroke:var(--ink);stroke-width:2;stroke-dasharray:1;stroke-dashoffset:1;transition:stroke-dashoffset .9s linear}
.plan.in .rt{stroke-dashoffset:0}
@media(max-width:760px){.plan{overflow-x:auto;-webkit-overflow-scrolling:touch;margin-right:calc(-1 * var(--gut));padding-right:var(--gut)}.plan svg,.plan figcaption{min-width:820px}}

/* ===== document page heads ===== */
.wh{padding:clamp(150px,22vh,230px) 0 clamp(30px,5vw,60px)}
.wh h1{font-weight:500;font-size:clamp(44px,6.2vw,104px);line-height:.95;letter-spacing:-.045em;margin-top:18px}
.wh h1 .ln{display:block}
.wh .lede{color:var(--ink);font-weight:300;font-size:clamp(22px,2vw,30px);max-width:28em;letter-spacing:-.01em}
.wmeta{display:flex;gap:26px;flex-wrap:wrap;margin-top:26px}
.wnext a{text-decoration:none}
.wnext a .ti{display:block;font-weight:500;font-size:clamp(24px,2.4vw,38px);letter-spacing:-.025em;margin-top:8px}
.wnext a:hover .ti{text-decoration:underline;text-underline-offset:6px;text-decoration-thickness:1px}

/* ===== the principal: his own words; his lines as theses ===== */
.pr{max-width:var(--measure);margin:0 auto;padding:0 var(--gut);box-sizing:content-box}
.pr-h{padding:clamp(150px,22vh,230px) 0 10px}
.pr-h h1{font-weight:500;font-size:clamp(52px,7.4vw,112px);line-height:.94;letter-spacing:-.045em;margin-top:16px}
.pr-intro{font-size:20px;line-height:1.62;margin-top:40px}
.pr-k{font-size:11px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;margin:64px 0 18px;padding-top:12px;border-top:1px solid var(--ink)}
.pr-k span{color:var(--dim);margin-right:14px}
.pr-k0{margin-top:56px}
.pr-a p{font-family:var(--serif);font-size:21px;line-height:1.72;margin-bottom:1em;hyphens:auto}
.pr .ths{margin:56px 0 8px}
.pr .ths-q{font-size:clamp(28px,3vw,42px)}

/* ===== propose: one question at a time ===== */
.pq-f{max-width:780px;margin-top:clamp(40px,6vw,70px)}
.pq-s{display:none;margin-top:52px}
.pq-s.on{display:block}.pq-s:first-child{margin-top:0}
.pq-q{display:block;font-weight:500;font-size:clamp(30px,3.2vw,50px);line-height:1.08;letter-spacing:-.025em}
.pq-h{margin-top:12px;font-size:clamp(18px,1.5vw,21px);line-height:1.5;color:var(--ink2);max-width:42em}
.pq-f textarea,.pq-f input:not(.hp){display:block;width:100%;margin-top:22px;background:transparent;border:0;border-bottom:1px solid var(--ink);color:var(--ink);font-family:var(--sans);font-size:19px;line-height:1.5;padding:14px 2px;border-radius:0;-webkit-appearance:none}
.pq-f textarea{min-height:180px;resize:vertical;border:1px solid var(--rule);padding:16px}
.pq-f textarea:focus,.pq-f input:focus{outline:none;border-color:var(--ink);box-shadow:0 1px 0 var(--ink)}
.pq-f ::placeholder{color:var(--dim)}
.pq-f .hp{position:absolute;left:-9999px;width:1px;height:1px}
.pq-row{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:20px}
.pq-row .btn{margin-top:0}.pq-row.done .btn{display:none}
.pf-out{margin-top:20px;font-size:12px;font-weight:500;letter-spacing:.06em;color:var(--ink2);min-height:1.5em}
.pf-out.bad{color:#9a2a1a}
.pf-done[hidden]{display:none}

/* footer */
.ft{padding:80px 0 46px;border-top:1px solid var(--ink);margin-top:40px}
.ft .wrap{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:flex-end}
.ft p{font-size:10.5px;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--ink2);line-height:1.95}
.ft a{text-decoration:none}.ft a:hover{color:var(--ink);text-decoration:underline}

@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}