:root{
  --paper:#f1eee6;--surface:#f8f6f1;--surface-soft:rgba(10,13,16,.035);--ink:#0a0d10;--soft:#404b52;--faint:#6e7980;--line:rgba(10,13,16,.16);--line-strong:rgba(10,13,16,.34);--cyan:#1aa7c6;--cyan-soft:rgba(26,167,198,.09);--vermilion:#e84b31;--vermilion-soft:rgba(232,75,49,.08);--max:1540px;--gutter:clamp(20px,4vw,70px);--reading:760px;--font-editorial:"Iowan Old Style","Baskerville","Palatino Linotype",Georgia,"Times New Roman",serif;--font-industrial-condensed:"Arial Narrow","Aptos Narrow","Roboto Condensed","Helvetica Neue",Arial,sans-serif;--font-industrial:"Aptos","Segoe UI","Helvetica Neue",Arial,sans-serif;--ease:cubic-bezier(.16,1,.3,1)
}
html[data-theme="dark"]{--paper:#0b0e11;--surface:#11171c;--surface-soft:rgba(255,255,255,.035);--ink:#edf0f1;--soft:#b9c2c7;--faint:#7f8a91;--line:rgba(255,255,255,.13);--line-strong:rgba(255,255,255,.27);--cyan:#62d5ed;--cyan-soft:rgba(98,213,237,.1);--vermilion:#ff6a4d;--vermilion-soft:rgba(255,106,77,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--paper);color:var(--ink);font-family:var(--font-industrial)}body{margin:0;background:var(--paper);color:var(--ink)}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--cyan);outline-offset:4px}::selection{background:var(--vermilion);color:#fff}
.skip-link{position:fixed;left:16px;top:16px;z-index:50;padding:10px 14px;background:var(--ink);color:var(--paper);transform:translateY(-180%);font:900 9px/1 var(--font-industrial-condensed);letter-spacing:.12em;text-transform:uppercase}.skip-link:focus{transform:none}
.series-masthead{min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 var(--gutter);border-bottom:1px solid var(--line-strong);position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 91%,transparent);backdrop-filter:blur(18px)}.series-brand{display:inline-flex;align-items:center;gap:12px;font:900 10px/1 var(--font-industrial-condensed);letter-spacing:.18em}.series-brand img{width:28px;height:28px;object-fit:contain}.series-nav{display:flex;align-items:center;gap:clamp(12px,2vw,28px);font:850 9px/1 var(--font-industrial-condensed);letter-spacing:.11em;text-transform:uppercase}.series-nav a{color:var(--soft)}.series-nav a:hover{color:var(--vermilion)}.theme-toggle{border:1px solid var(--line-strong);background:transparent;color:var(--soft);padding:8px 10px;cursor:pointer;font:900 8px/1 var(--font-industrial-condensed);letter-spacing:.12em;text-transform:uppercase}
.series-status,.section-label,.article-number,.rail-label,.definition-label{margin:0;color:var(--cyan);font:900 9px/1 var(--font-industrial-condensed);letter-spacing:.15em;text-transform:uppercase}.series-status::before,.article-number::before{content:"";display:inline-block;width:22px;height:1px;margin:0 9px 3px 0;background:var(--vermilion)}
.series-hero{max-width:var(--max);margin:0 auto;display:grid;grid-template-columns:minmax(0,1.12fr) minmax(340px,.66fr);gap:clamp(46px,7vw,120px);padding:clamp(90px,10vw,155px) var(--gutter) clamp(82px,9vw,135px);border-bottom:1px solid var(--line-strong);background:linear-gradient(90deg,transparent calc(66% - .5px),var(--line) 66%,transparent calc(66% + .5px))}.series-hero h1{max-width:8ch;margin:24px 0 0;font-family:var(--font-editorial);font-size:clamp(64px,8.7vw,142px);font-weight:400;line-height:.86;letter-spacing:-.065em}.series-deck{max-width:760px;margin:34px 0 0;color:var(--soft);font-family:var(--font-editorial);font-size:clamp(24px,2.6vw,40px);line-height:1.15;letter-spacing:-.032em}.series-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}.series-button{min-height:48px;display:inline-flex;align-items:center;padding:0 16px;border:1px solid var(--line-strong);font:900 9px/1 var(--font-industrial-condensed);letter-spacing:.11em;text-transform:uppercase}.series-button:hover{border-color:var(--cyan)}.series-button--primary{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.series-definition{align-self:end;padding:clamp(28px,4vw,48px);border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);background:linear-gradient(135deg,var(--vermilion-soft),transparent 50%)}.series-definition blockquote{margin:24px 0 48px;font-family:var(--font-editorial);font-size:clamp(25px,2.3vw,36px);line-height:1.18;letter-spacing:-.03em}.definition-state{padding-top:20px;border-top:1px solid var(--line)}.definition-state span{display:block;color:var(--faint);font:900 8px/1 var(--font-industrial-condensed);letter-spacing:.13em}.definition-state strong{display:block;margin-top:8px;font-size:16px}.definition-state p{margin:8px 0 0;color:var(--soft);font-size:13px;line-height:1.55}
.series-introduction,.series-downloads{max-width:var(--max);margin:0 auto;display:grid;grid-template-columns:.72fr 1.28fr;gap:clamp(36px,7vw,110px);padding:clamp(76px,9vw,140px) var(--gutter);border-bottom:1px solid var(--line-strong)}.series-introduction h2,.series-downloads h2,.arc-list>header h2{margin:18px 0 0;font-family:var(--font-editorial);font-size:clamp(42px,5.4vw,80px);font-weight:400;line-height:.95;letter-spacing:-.05em}.series-introduction>div:last-child p{max-width:680px;margin:0 0 28px;color:var(--soft);font-size:18px;line-height:1.75}.series-introduction a,.download-actions a{font:900 10px/1 var(--font-industrial-condensed);letter-spacing:.1em;text-transform:uppercase}.series-introduction a:hover,.download-actions a:hover{color:var(--vermilion)}
.arc-list{max-width:var(--max);margin:0 auto;padding:clamp(80px,9vw,140px) var(--gutter)}.arc-list>header{display:grid;grid-template-columns:.72fr 1.28fr;gap:clamp(36px,7vw,110px);margin-bottom:54px}.arc-list>header h2{margin:0}.arc-card{display:grid;grid-template-columns:100px 1fr 90px;gap:clamp(24px,4vw,62px);align-items:start;padding:38px 0;border-top:1px solid var(--line-strong)}.arc-card:last-child{border-bottom:1px solid var(--line-strong)}.arc-card__number{font-family:var(--font-editorial);font-size:38px;line-height:1;color:var(--vermilion)}.arc-card__body>p:first-child{margin:0 0 9px;color:var(--faint);font:900 8px/1 var(--font-industrial-condensed);letter-spacing:.13em;text-transform:uppercase}.arc-card h2{margin:0;font-family:var(--font-editorial);font-size:clamp(30px,3.6vw,54px);font-weight:400;letter-spacing:-.04em}.arc-card__body>p:last-child{max-width:720px;margin:15px 0 0;color:var(--soft);line-height:1.7}.arc-card>a{align-self:center;justify-self:end;font:900 9px/1 var(--font-industrial-condensed);letter-spacing:.11em;text-transform:uppercase;color:var(--cyan)}
.arc-map{max-width:var(--max);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:24px var(--gutter);border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);overflow:auto;font:850 10px/1 var(--font-industrial-condensed);letter-spacing:.08em;color:var(--soft);white-space:nowrap}.arc-map b{color:var(--vermilion)}.arc-map i{color:var(--cyan);font-style:normal}.download-actions{display:flex;flex-direction:column;gap:18px;padding-top:8px}.series-footer{min-height:110px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 var(--gutter);border-top:1px solid var(--line-strong);color:var(--faint);font:900 8px/1 var(--font-industrial-condensed);letter-spacing:.12em;text-transform:uppercase}
.article-layout{max-width:var(--max);margin:0 auto;display:grid;grid-template-columns:245px minmax(0,1fr);gap:clamp(56px,8vw,130px);padding:clamp(64px,7vw,110px) var(--gutter) clamp(110px,12vw,190px)}.series-rail{position:sticky;top:104px;align-self:start;display:flex;flex-direction:column;border-top:1px solid var(--line-strong)}.series-rail .rail-label{padding:0 0 18px;border-bottom:1px solid var(--line-strong)}.series-rail a{display:grid;grid-template-columns:42px 1fr;gap:10px;padding:14px 0;border-bottom:1px solid var(--line);color:var(--faint);font-size:11px;line-height:1.35}.series-rail a span{color:var(--vermilion);font:900 8px/1 var(--font-industrial-condensed)}.series-rail a[aria-current="page"],.series-rail a:hover{color:var(--ink)}
.article{min-width:0;max-width:940px}.article-header{padding-bottom:clamp(48px,6vw,76px);border-bottom:1px solid var(--line-strong)}.article-number{margin-top:26px;color:var(--faint)}.article-header h1{max-width:11ch;margin:20px 0 0;font-family:var(--font-editorial);font-size:clamp(56px,7.2vw,110px);font-weight:400;line-height:.89;letter-spacing:-.06em}.article-summary{max-width:730px;margin:30px 0 0;color:var(--soft);font-family:var(--font-editorial);font-size:clamp(21px,2.1vw,31px);line-height:1.3;letter-spacing:-.02em}.article-meta{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:34px;padding-top:18px;border-top:1px solid var(--line);color:var(--faint);font:850 8px/1 var(--font-industrial-condensed);letter-spacing:.11em;text-transform:uppercase}.article-meta a{color:var(--cyan)}
.prose{max-width:var(--reading);padding-top:clamp(54px,6vw,82px);font-family:var(--font-editorial);font-size:18.5px;line-height:1.82;color:var(--ink)}.prose h2{margin:3.25em 0 .8em;font-size:clamp(32px,3.1vw,47px);line-height:1.04;letter-spacing:-.038em;font-weight:400}.prose h3{margin:2.4em 0 .7em;font-size:25px;line-height:1.15;font-weight:400}.prose p{margin:0 0 1.42em}.prose ul,.prose ol{margin:0 0 1.55em;padding-left:1.25em}.prose li{margin:.44em 0}.prose blockquote{margin:2.4em 0;padding:0 0 0 26px;border-left:3px solid var(--vermilion);font-size:1.34em;line-height:1.45;letter-spacing:-.02em}.prose strong{font-weight:700}.prose code{font-family:"Cascadia Code",Consolas,monospace;font-size:.84em;background:var(--surface);padding:.1em .25em;border:1px solid var(--line)}.prose pre{overflow:auto;margin:2em 0;padding:20px;background:var(--surface);border:1px solid var(--line);font-family:"Cascadia Code",Consolas,monospace;font-size:13px;line-height:1.65}.prose hr{border:0;border-top:1px solid var(--line-strong);margin:4em 0}.prose--consolidated h2{margin-top:4.2em;padding-top:1.4em;border-top:1px solid var(--line-strong)}
.article-pagination{max-width:var(--reading);display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:72px;padding-top:28px;border-top:1px solid var(--line-strong)}.article-pagination a{display:flex;flex-direction:column;gap:8px;font-family:var(--font-editorial);font-size:21px}.article-pagination a.next{text-align:right;align-items:flex-end}.article-pagination span{font:900 8px/1 var(--font-industrial-condensed);color:var(--faint);letter-spacing:.11em;text-transform:uppercase}
@media(max-width:980px){.series-hero{grid-template-columns:1fr;background:none}.series-definition{max-width:700px}.article-layout{grid-template-columns:1fr}.series-rail{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:0}.series-rail .rail-label{grid-column:1/-1}.series-rail a{padding:12px;border-bottom:1px solid var(--line);border-right:1px solid var(--line)}}
@media(max-width:720px){.series-masthead{position:static;align-items:flex-start;padding-block:16px}.series-nav{justify-content:flex-end;flex-wrap:wrap}.series-nav a:nth-child(3){display:none}.series-hero{padding-top:64px}.series-hero h1{font-size:clamp(54px,16vw,78px)}.series-introduction,.series-downloads,.arc-list>header{grid-template-columns:1fr}.arc-card{grid-template-columns:58px 1fr}.arc-card>a{grid-column:2;justify-self:start}.series-rail{grid-template-columns:1fr}.article-header h1{font-size:clamp(50px,14vw,76px)}.prose{font-size:17px}.article-pagination{grid-template-columns:1fr}.article-pagination a.next{text-align:left;align-items:flex-start}.series-footer{align-items:flex-start;justify-content:center;flex-direction:column;padding-block:30px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}