/* rifindustries.com — site stylesheet (v1.0.0, 3 Nov 2026)
   Direction: industrial, open-source, data-forward. The page is a supply chain: every structure is a
   rail of linked segment nodes (nav, section map, process chains, the ten-step rail, the timeline).
   Type: Archivo (variable width + weight; expanded for display), Martian Mono for codes, dates, IDs, paths.
   Palette: RIF signal orange + hull navy on galvanized paper; status green only for "live/qualified" data. */

@font-face{font-family:"Archivo";src:url(/assets/fonts/archivo-latin-standard-normal.woff2) format("woff2-variations"),url(/assets/fonts/archivo-latin-standard-normal.woff2) format("woff2");font-weight:100 900;font-stretch:62% 125%;font-style:normal;font-display:swap}
@font-face{font-family:"Martian Mono";src:url(/assets/fonts/martian-mono-latin-standard-normal.woff2) format("woff2-variations"),url(/assets/fonts/martian-mono-latin-standard-normal.woff2) format("woff2");font-weight:100 800;font-stretch:75% 112.5%;font-style:normal;font-display:swap}

:root{
  --paper:#F2F4F5;      /* galvanized sheet */
  --plate:#FFFFFF;      /* image plates, panels */
  --ink:#132030;        /* body text */
  --ink-2:#465564;      /* secondary text */
  --navy:#0A2D5A;       /* RIF hull navy */
  --navy-2:#0B4C9C;     /* link blue */
  --signal:#FF9500;     /* RIF signal orange (fills only on light) */
  --signal-soft:#FFF0DA;
  --signal-ink:#8F4600; /* orange for text on light */
  --rule:#C5CFD8;
  --rule-2:#DDE3E8;
  --go:#17733F;         /* status green: live / qualified / URL lines */
  --on-navy:#C9D6E6;
  --on-navy-accent:#FFB547;
  --grid:rgba(10,45,90,.065);
  --grid-major:rgba(10,45,90,.11);
  --f-sans:"Archivo",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-mono:"Martian Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --gutter:16px;
  --measure:68ch;
}
@media (min-width:700px){:root{--gutter:32px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:1rem}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-sans);font-size:1.0625rem;line-height:1.65;font-stretch:100%;font-weight:400;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy-2);text-decoration-thickness:1px;text-underline-offset:.18em}
a:hover{color:var(--signal-ink);text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--signal);outline-offset:2px;border-radius:2px}
p{margin:0 0 1.05em}
ul,ol{padding-left:1.25em;margin:0 0 1.2em}
li{margin:.25em 0}
strong,b{font-weight:650}
.mono,code{font-family:var(--f-mono);font-stretch:87.5%;font-size:.84em;letter-spacing:-.01em}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.skip{position:absolute;left:var(--gutter);top:-100px;z-index:10;background:var(--navy);color:#fff;padding:.6rem 1rem;font-weight:600}
.skip:focus{top:.5rem;color:#fff}

.wrap{max-width:1240px;margin:0 auto;padding-inline:var(--gutter)}

/* ------------------------------------------------------------------ header + pipeline nav */
.site-head{border-top:5px solid var(--navy);background:var(--paper);position:relative;z-index:2}
.head-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.9rem 2rem;padding-block:1rem}
.brand{display:flex;align-items:center;gap:.8rem;color:var(--ink);text-decoration:none}
.brand:hover{color:var(--ink)}
.brand img{width:46px;height:46px}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-weight:800;font-stretch:118%;font-size:1.28rem;letter-spacing:-.01em;color:var(--navy)}
.brand-line{font-size:.8rem;color:var(--ink-2);font-stretch:96%;margin-top:.2rem}
.pipe{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;align-items:center;position:relative}
.pipe li{margin:0;position:relative;display:flex;align-items:center}
.pipe li+li::before{content:"";width:1.1rem;height:2px;background:var(--rule)}
.pipe a{display:flex;align-items:center;gap:.42rem;padding:.45rem .5rem;color:var(--ink);text-decoration:none;font-size:.95rem;font-weight:550;font-stretch:96%;border-radius:2px}
.pipe a::before{content:"";width:9px;height:9px;border:2px solid var(--navy);border-radius:50%;background:var(--paper);flex:none}
.pipe a:hover{color:var(--navy-2)}
.pipe a:hover::before{background:var(--rule)}
.pipe a[aria-current="page"],.pipe a.is-section{color:var(--navy);font-weight:750}
.pipe a[aria-current="page"]::before,.pipe a.is-section::before{background:var(--signal);border-color:var(--signal);width:11px;height:11px}
@media (max-width:899px){
  .head-row{padding-block:.8rem .6rem}
  .site-nav{width:100%}
  .pipe{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--rule-2);padding-top:.35rem}
  .pipe li+li::before{display:none}
  .pipe a{padding:.5rem .2rem;font-size:.9rem}
}
@media (max-width:359px){.pipe{grid-template-columns:repeat(3,minmax(0,1fr))}}

/* ------------------------------------------------------------------ breadcrumbs */
.crumbs{font-family:var(--f-mono);font-stretch:87.5%;font-size:.74rem;color:var(--ink-2);padding-top:1.4rem}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.2rem .5rem}
.crumbs li{margin:0}
.crumbs li+li::before{content:"/";margin-right:.5rem;color:var(--rule)}
.crumbs a{color:var(--ink-2)}

/* ------------------------------------------------------------------ type */
h1,h2,h3,h4{color:var(--navy);line-height:1.12;margin:0;text-wrap:balance}
.display{font-weight:800;font-stretch:125%;letter-spacing:-.022em;line-height:1.0;font-size:clamp(2.15rem,1.1rem + 4.6vw,4.6rem)}
.page-title{font-weight:800;font-stretch:114%;letter-spacing:-.016em;line-height:1.05;font-size:clamp(1.8rem,1.05rem + 2.4vw,2.9rem);max-width:22ch}
h2{font-weight:760;font-stretch:112%;letter-spacing:-.012em;font-size:clamp(1.5rem,1.05rem + 1.5vw,2.15rem)}
h3{font-weight:700;font-stretch:104%;font-size:1.22rem;line-height:1.25}
h4{font-weight:700;font-size:1.05rem}
.lead{font-size:clamp(1.1rem,1rem + .4vw,1.3rem);line-height:1.55;color:var(--ink);max-width:60ch}
.sub{font-weight:650;font-stretch:110%;color:var(--signal-ink);font-size:1.05rem;margin-bottom:.6rem}

/* ------------------------------------------------------------------ page head (inner) */
.page-head{display:grid;gap:1.6rem;align-items:end;padding-block:1.4rem 2.6rem;background:linear-gradient(var(--navy),var(--navy)) no-repeat center bottom/calc(100% - 2 * var(--gutter)) 2px}
.page-head .lead{margin-top:1.1rem}
.page-head .plate{justify-self:start}
@media (min-width:900px){.page-head{grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:3rem}.page-head .plate{justify-self:end}}
.plate{background:var(--plate);border:1px solid var(--rule-2);padding:10px;display:inline-block}
.plate img{margin:0 auto}

/* ------------------------------------------------------------------ layout: route + article */
.layout{display:grid;gap:2rem;padding-block:2.4rem 1rem}
@media (min-width:1100px){.layout{grid-template-columns:230px minmax(0,1fr);gap:4rem}}
.route{font-size:.86rem}
.route-title{font-family:var(--f-mono);font-stretch:87.5%;font-size:.72rem;color:var(--ink-2);margin:0 0 .6rem}
.route ol{list-style:none;margin:0;padding:0;position:relative}
.route li{margin:0;position:relative;padding-left:1.35rem}
.route li::before{content:"";position:absolute;left:4px;top:0;bottom:0;width:2px;background:var(--rule)}
.route li:first-child::before{top:.85em}
.route li:last-child::before{bottom:calc(100% - .85em)}
.route a{display:block;padding:.28rem 0;color:var(--ink);text-decoration:none;line-height:1.3}
.route a::before{content:"";position:absolute;left:0;top:.62em;width:10px;height:10px;border:2px solid var(--navy);border-radius:50%;background:var(--paper)}
.route a:hover{color:var(--navy-2);text-decoration:underline}
.route a:hover::before{background:var(--signal);border-color:var(--signal)}
@media (min-width:1100px){.route nav{position:sticky;top:1.5rem;max-height:calc(100vh - 3rem);overflow:auto;padding-right:.5rem}}
@media (max-width:1099px){.route{border:1px solid var(--rule-2);background:var(--plate);padding:1rem 1.1rem}.route ol{columns:2 14rem;column-gap:1.5rem}.route li{break-inside:avoid}}

.article>section{margin-bottom:3.2rem}
.article>section>h2{position:relative;border-top:2px solid var(--navy);padding-top:.9rem;margin-bottom:1.1rem;scroll-margin-top:1rem}
.article>section>h2::before{content:"";position:absolute;left:0;top:-7px;width:12px;height:12px;background:var(--signal)}
.article h3{margin:1.9rem 0 .6rem}
.prose{max-width:var(--measure)}
.prose ul{list-style:none;padding-left:0}
.prose ul>li{position:relative;padding-left:1.3rem}
.prose ul>li::before{content:"";position:absolute;left:.15rem;top:.68em;width:7px;height:7px;background:var(--signal)}
.prose ol>li::marker{font-family:var(--f-mono);font-size:.8em;color:var(--ink-2)}

/* ------------------------------------------------------------------ figures */
figure{margin:1.6rem 0}
.shot{background:var(--plate);border:1px solid var(--rule-2);padding:12px;max-width:min(100%,690px)}
.shot figcaption,.thumb figcaption{font-size:.84rem;color:var(--ink-2);margin-top:.6rem;line-height:1.45}
.shot a{display:block}
.hg{background:var(--plate);display:inline-block;padding:6px 10px;margin:0 0 1rem}
.hg img{max-height:56px;width:auto}
.split{display:grid;gap:1.4rem 2rem;align-items:start}
@media (min-width:760px){.split{grid-template-columns:minmax(0,1fr) minmax(0,300px)}.split.wide-media{grid-template-columns:minmax(0,1fr) minmax(0,400px)}}
.split figure{margin:0}
.thumb{background:var(--plate);border:1px solid var(--rule-2);padding:8px}

/* ------------------------------------------------------------------ chains (the signature) */
.chain{list-style:none;margin:1.4rem 0 1.8rem;padding:0;display:grid;gap:0;counter-reset:seg}
.chain>li{margin:0;position:relative;display:grid;grid-template-columns:2.6rem minmax(0,1fr);gap:.9rem;padding-bottom:1.1rem;align-content:start;align-items:start}
.chain>li::before{counter-increment:seg;content:counter(seg,decimal-leading-zero);width:2.6rem;height:2.6rem;border-radius:50%;background:var(--plate);border:2px solid var(--navy);display:grid;place-items:center;font-family:var(--f-mono);font-stretch:87.5%;font-size:.75rem;font-weight:600;color:var(--navy);position:relative;z-index:1}
.chain>li::after{content:"";position:absolute;left:calc(1.3rem - 1px);top:2.6rem;bottom:0;width:2px;background:var(--navy)}
.chain>li:last-child::after{display:none}
.chain>li:last-child{padding-bottom:0}
.chain .seg-title{font-weight:700;color:var(--navy);display:block;padding-top:.45rem;line-height:1.3}
.chain .seg-text{display:block;color:var(--ink);margin-top:.2rem;font-size:.97rem}
.chain>li[data-n]::before{content:attr(data-n);font-size:.56rem;letter-spacing:-.04em}
.chain>li.is-on::before{background:var(--signal);border-color:var(--signal);color:var(--ink)}
@media (min-width:760px){
  .chain.h{grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);gap:0}
  .chain.h>li{grid-template-columns:1fr;gap:.7rem;padding:0 1.2rem 0 0}
  .chain.h>li::after{left:2.6rem;right:0;top:calc(1.3rem - 1px);bottom:auto;width:auto;height:2px}
  .chain.h>li:last-child::after{display:none}
  .chain.h .seg-title{padding-top:0}
}

/* ------------------------------------------------------------------ hero (home) */
.hero{position:relative;border-bottom:2px solid var(--navy);overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--grid-major) 1px,transparent 1px),linear-gradient(90deg,var(--grid-major) 1px,transparent 1px),linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:120px 120px,120px 120px,24px 24px,24px 24px;background-position:-1px -1px;-webkit-mask-image:linear-gradient(180deg,#000 55%,transparent);mask-image:linear-gradient(180deg,#000 55%,transparent);pointer-events:none}
.hero .wrap{position:relative;padding-block:2.6rem 2.8rem}
.h1-plate{display:inline-block;background:var(--signal);color:var(--ink);font-weight:800;font-stretch:118%;font-size:clamp(1rem,.85rem + .6vw,1.35rem);letter-spacing:-.005em;padding:.28em .6em .32em;margin-bottom:1.1rem;line-height:1.1}
.h1-line{display:block}
.hero .lead{margin-top:1.4rem}
.loop-wrap{position:relative;max-width:1000px;margin-top:2.2rem}
.loop{list-style:none;margin:0;padding:0;display:grid;gap:0}
.loop>li{margin:0;position:relative;display:grid;grid-template-columns:3.4rem minmax(0,1fr);gap:1rem;padding-bottom:1.3rem;align-content:start}
.loop .node{width:3.4rem;height:3.4rem;border-radius:50%;background:var(--signal);display:grid;place-items:center;font-family:var(--f-mono);font-stretch:87.5%;font-weight:700;font-size:.85rem;color:var(--ink);position:relative;z-index:1}
.loop>li::after{content:"";position:absolute;left:calc(1.7rem - 1.5px);top:3.4rem;bottom:0;width:3px;background:var(--navy)}
.loop>li:last-child::after{display:none}
.loop .seg-title{font-weight:780;font-stretch:112%;color:var(--navy);font-size:1.12rem;display:block;padding-top:.35rem}
.loop .seg-text{display:block;color:var(--ink-2);font-size:.95rem;margin-top:.15rem;max-width:36ch}
.loop .seg-code{font-family:var(--f-mono);font-stretch:87.5%;font-size:.72rem;color:var(--go);display:block;margin-top:.35rem}
@media (min-width:760px){
  .loop{grid-auto-flow:column;grid-auto-columns:minmax(0,1fr)}
  .loop>li{grid-template-columns:1fr;gap:.8rem;padding:0 1.5rem 0 0}
  .loop>li::after{left:3.4rem;right:0;top:calc(1.7rem - 1.5px);bottom:auto;width:auto;height:3px}
  .loop>li:last-child::after{display:none}
  .loop .seg-title{padding-top:0}
}
.pulse{position:absolute;width:14px;height:14px;border-radius:50%;background:var(--signal);box-shadow:0 0 0 4px rgba(255,149,0,.25);opacity:0;pointer-events:none;z-index:2}
@media (min-width:760px) and (prefers-reduced-motion:no-preference){
  .pulse{top:calc(1.7rem - 7px);left:3.4rem;animation:flow 2.8s cubic-bezier(.5,0,.3,1) .6s 1 both}
  @keyframes flow{0%{opacity:0;left:3.4rem}8%{opacity:1}92%{opacity:1}100%{opacity:0;left:calc(66.6% + 0rem)}}
}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,13.5rem),1fr));gap:0;margin:2.4rem 0 0;border-top:1px solid var(--rule);border-left:1px solid var(--rule)}
.facts>div{border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);padding:.8rem 1rem;background:rgba(255,255,255,.72)}
.facts dt{font-size:.8rem;color:var(--ink-2);font-weight:550}
.facts dd{margin:.2rem 0 0;font-weight:650;color:var(--navy);line-height:1.35}
.facts dd .mono{font-weight:600;color:var(--ink)}

/* ------------------------------------------------------------------ home sections */
.band{padding-block:3.4rem}
.band+.band{border-top:1px solid var(--rule)}
.band-head{max-width:62ch;margin-bottom:1.6rem}
.band-head h2{margin-bottom:.8rem}
.band-head h2::before{content:"";display:block;width:12px;height:12px;background:var(--signal);margin-bottom:.9rem}

.search-demo{background:var(--navy);color:var(--on-navy);padding:clamp(1.2rem,1rem + 2vw,2.4rem);position:relative}
.search-demo h2,.search-demo h3{color:#fff}
.search-demo .banner{max-width:600px;width:100%}
.search-field{display:flex;align-items:center;gap:.8rem;background:#fff;color:var(--ink-2);text-decoration:none;border:3px solid var(--signal);padding:.55rem .6rem .55rem 1rem;margin:1.2rem 0 .5rem;max-width:760px;font-size:1rem}
.search-field:hover{color:var(--ink);outline:none}
.search-field .ph{flex:1;font-family:var(--f-mono);font-stretch:87.5%;font-size:.8rem;line-height:1.4}
.search-field img{width:44px;height:44px;flex:none}
.search-label{font-size:.92rem;color:#fff;font-weight:600;display:block;margin-top:1.2rem}
.search-note{font-size:.86rem;color:var(--on-navy)}
.verticals{list-style:none;margin:1rem 0 0;padding:1rem 0 0;border-top:1px solid rgba(201,214,230,.3);columns:2 8rem;column-gap:1rem;font-size:.8rem;line-height:1.35}
@media (min-width:700px){.verticals{columns:4 11rem;column-gap:1.4rem;font-size:.86rem}}
.verticals li{margin:0 0 .38rem;break-inside:avoid;padding-left:.9rem;position:relative}
.verticals li::before{content:"";position:absolute;left:0;top:.5em;width:5px;height:5px;background:var(--on-navy-accent)}
.verticals .vh{font-weight:700;color:#fff;padding-left:0;margin-top:.2rem}
.verticals .vh::before{display:none}
.search-demo .endless{margin-top:1.4rem;color:#fff}
.search-demo a:not(.search-field){color:#fff}

.modules{display:grid;gap:0;border-top:2px solid var(--navy)}
.module{display:grid;gap:1.2rem 2.4rem;padding-block:1.8rem;border-bottom:1px solid var(--rule)}
@media (min-width:860px){.module{grid-template-columns:minmax(0,1fr) 380px}}
.module h3{font-size:1.4rem;font-stretch:112%;margin-bottom:.5rem}
.module .go{font-weight:650}
.module figure{margin:0}

.stages{display:grid;gap:1.2rem;margin-top:1rem}
@media (min-width:860px){.stages{grid-template-columns:repeat(3,minmax(0,1fr))}}
.stages.grid2,.stages.grid4{grid-template-columns:minmax(0,1fr)}
@media (min-width:600px){.stages.grid2,.stages.grid4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1000px){.stages.grid4{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stage{background:var(--plate);border:1px solid var(--rule-2);padding:1.2rem 1.3rem;position:relative}
.stage .hg{padding:0;margin-bottom:.6rem}
.stage h3{margin-bottom:.5rem}

/* ------------------------------------------------------------------ boxes */
.manifest{background:var(--plate);border:1px solid var(--rule-2);margin:0 0 2.4rem;max-width:var(--measure)}
.manifest-title{background:var(--navy);color:#fff;font-weight:700;font-stretch:108%;font-size:.98rem;padding:.55rem 1rem;margin:0;display:flex;justify-content:space-between;gap:1rem}
.manifest-title .mono{color:var(--on-navy-accent);font-weight:500}
.manifest ul{list-style:none;margin:0;padding:.6rem 1rem .8rem}
.manifest li{position:relative;padding:.35rem 0 .35rem 1.6rem;border-bottom:1px dashed var(--rule-2);margin:0}
.manifest li:last-child{border-bottom:0}
.manifest li::before{content:"";position:absolute;left:.1rem;top:.78em;width:9px;height:5px;border-left:2px solid var(--go);border-bottom:2px solid var(--go);transform:rotate(-45deg)}
.context{background:var(--signal-soft);border:1px solid #F0C88A;padding:1.2rem 1.3rem 1rem;margin:0 0 2rem;max-width:var(--measure)}
.article>section.context>h2,.context h3{font-size:1.1rem;font-stretch:108%;margin:0 0 .5rem;border:0;padding:0}
.article>section.context>h2::before{display:none}
.article>section.context{margin-bottom:2rem}
.note{border-left:4px solid var(--navy);background:var(--plate);padding:.9rem 1.1rem;margin:1.4rem 0;max-width:var(--measure);font-size:.97rem}
.credit{display:grid;gap:.4rem;background:var(--navy);color:var(--on-navy);padding:1.2rem 1.3rem;margin:2.4rem 0;max-width:var(--measure)}
.credit p{margin:0}
.credit .credit-title{color:#fff;font-weight:700;font-stretch:108%}
.credit a{color:#fff;font-weight:650}
.credit a:hover{color:var(--on-navy-accent)}
.credit .mono{color:var(--on-navy-accent)}
blockquote{margin:1.4rem 0;padding:.2rem 0 .2rem 1.2rem;border-left:4px solid var(--signal);font-size:1.12rem;font-stretch:104%;color:var(--navy);max-width:60ch}
dl.terms{margin:0 0 1.4rem}
dl.terms dt{font-weight:700;color:var(--navy);margin-top:1rem}
dl.terms dd{margin:.25rem 0 0}
.sig{font-weight:700;color:var(--navy)}

/* ------------------------------------------------------------------ timeline */
.timeline{list-style:none;margin:1.2rem 0 0;padding:0;display:grid;gap:0;max-width:var(--measure)}
.timeline li{margin:0;display:grid;grid-template-columns:7.2rem 1.4rem minmax(0,1fr);gap:.8rem;position:relative;padding-bottom:1.1rem}
.timeline .when{font-family:var(--f-mono);font-stretch:87.5%;font-size:.78rem;color:var(--ink);font-weight:600;padding-top:.15rem;text-align:right}
.timeline .dot{width:14px;height:14px;border-radius:50%;border:2px solid var(--navy);background:var(--paper);margin:.3rem auto 0;position:relative;z-index:1}
.timeline li::after{content:"";position:absolute;left:calc(7.2rem + .8rem + .7rem - 1px);top:1.25rem;bottom:0;width:2px;background:var(--navy)}
.timeline li:last-child::after{display:none}
.timeline li.key .dot{background:var(--signal);border-color:var(--signal)}
.timeline .what{font-size:.98rem}
@media (max-width:520px){.timeline li{grid-template-columns:5.4rem 1.2rem minmax(0,1fr);gap:.6rem}.timeline li::after{left:calc(5.4rem + .6rem + .6rem - 1px)}}

/* ------------------------------------------------------------------ ten-step rail */
.steprail{list-style:none;margin:1.2rem 0 1.4rem;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem}
@media (min-width:640px){.steprail{grid-template-columns:repeat(5,minmax(0,1fr));gap:0;row-gap:1.1rem}}
.steprail li{margin:0;position:relative}
.steprail a{display:flex;align-items:center;gap:.55rem;text-decoration:none;color:var(--ink);padding:.3rem .2rem;font-size:.9rem;line-height:1.2;position:relative;z-index:1}
.steprail .n{flex:none;width:2.1rem;height:2.1rem;border-radius:50%;border:2px solid var(--navy);background:var(--paper);display:grid;place-items:center;font-family:var(--f-mono);font-stretch:87.5%;font-size:.72rem;font-weight:700;color:var(--navy)}
.steprail .lbl{font-weight:600}
.steprail a:hover .n{background:var(--rule-2)}
.steprail a[aria-current="page"] .n{background:var(--signal);border-color:var(--signal);color:var(--ink)}
.steprail a[aria-current="page"] .lbl{color:var(--navy);font-weight:800}
@media (min-width:640px){
  .steprail li::after{content:"";position:absolute;left:2.3rem;right:0;top:calc(.3rem + 1.05rem - 1px);height:2px;background:var(--navy);z-index:0}
  .steprail li:nth-child(5n)::after{display:none}
  .steprail a{flex-direction:column;align-items:flex-start;gap:.4rem}
  .steprail .lbl{background:var(--paper);padding-right:.4rem}
}
.step-index{columns:2 18rem;column-gap:2rem;font-size:.9rem;list-style:none;padding:0}
.step-index li{break-inside:avoid;margin:0 0 .35rem}
.step-index .mono{color:var(--ink-2);margin-right:.35rem}
.neighbours{display:grid;gap:1rem;margin-top:1rem}
@media (min-width:760px){.neighbours{grid-template-columns:repeat(2,minmax(0,1fr))}}
.neighbour{background:var(--plate);border:1px solid var(--rule-2);padding:1rem 1.2rem}
.neighbour h3{margin:0 0 .4rem;font-size:1.1rem}
.neighbour p{margin:0 0 .5rem;font-size:.97rem}
.groups{display:grid;gap:1rem;margin-top:1rem}
@media (min-width:760px){.groups{grid-template-columns:repeat(2,minmax(0,1fr))}}
.groups>div{border-top:2px solid var(--navy);padding-top:.8rem}
.groups h3{font-size:1.05rem;margin:0 0 .4rem}
.groups p{font-size:.97rem}

/* ------------------------------------------------------------------ SERP sample */
.serp-head{display:flex;flex-wrap:wrap;align-items:center;gap:1rem 1.6rem}
.result{display:grid;gap:1rem 1.8rem;padding:1.4rem 0;border-bottom:1px solid var(--rule);align-items:start}
.result .hg{margin:0 0 .6rem}
@media (min-width:760px){.result{grid-template-columns:minmax(0,1fr) 260px}}
.result .url{font-family:var(--f-mono);font-stretch:87.5%;font-size:.74rem;color:var(--go);display:block;margin-bottom:.25rem;word-break:break-all}
.result h3{margin:0 0 .45rem;font-size:1.2rem}
.result h3 a{text-decoration:none}
.result h3 a:hover{text-decoration:underline}
.result p{margin:0 0 .6rem;font-size:.98rem}
.result figure{margin:0}
.profile{background:var(--plate);border:1px solid var(--rule-2);padding:1.2rem;margin:1.4rem 0}
.profile-grid{display:grid;gap:1rem 1.6rem}
@media (min-width:760px){.profile-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.profile .cell{border-top:1px solid var(--rule-2);padding-top:.8rem}
.profile .cell h3{font-size:1rem;margin:.6rem 0 0;color:var(--ink-2);font-weight:600;font-family:var(--f-mono);font-stretch:87.5%}
.profile .lbl-img{width:180px;height:40px}

/* ------------------------------------------------------------------ citations + references */
/* markers: numbered, in the link blue, linked to their entry in References (each entry links back) */
sup.cite{font-family:var(--f-sans);font-stretch:96%;font-size:.66em;font-weight:650;line-height:0;vertical-align:.6em;margin-left:.04em;white-space:nowrap;font-variant-numeric:tabular-nums}
.cite a{color:var(--navy-2);text-decoration:none;padding:0 .05em;border-radius:2px;scroll-margin-block:5rem}
.cite a:hover{color:var(--signal-ink);text-decoration:underline}
.credit .cite a{color:var(--on-navy-accent);font-weight:600}
.credit .cite a:hover{color:#fff}
.cite a:target{background:var(--signal-soft);color:var(--navy);box-shadow:0 0 0 2px var(--signal)}
.references{margin-top:1rem}
.references h2{font-size:1.25rem;font-stretch:108%;margin-bottom:.9rem}
.references ol{font-size:.88rem;line-height:1.55;padding-left:2.7rem;max-width:84ch;margin:0}
.references li{margin:0 0 .5rem;padding:.2rem .45rem;border-left:3px solid transparent;scroll-margin-block:5rem}
.references li::marker{font-family:var(--f-mono);font-size:.78em;color:var(--ink-2)}
.references li:target{background:var(--signal-soft);border-left-color:var(--signal)}
.references a{word-break:break-word}
.ref-back{font-family:var(--f-mono);font-stretch:87.5%;font-size:.8em;font-weight:600;color:var(--ink-2);margin-right:.25rem;white-space:nowrap}
.ref-back a{color:var(--navy-2);text-decoration:none;padding:0 .1em}
.ref-back a:hover{text-decoration:underline}
.ref-title{font-style:normal}
.ref-pub,.ref-date{color:var(--ink-2)}
.references .host{font-family:var(--f-mono);font-stretch:87.5%;font-size:.78em;color:var(--ink-2);overflow-wrap:anywhere}
.ref-note{margin:.9rem 0 0;font-size:.8rem;color:var(--ink-2)}
@keyframes rif-cite-flash{0%{background:#FFD08A}100%{}}
.references li:target,.cite a:target{animation:rif-cite-flash 2.4s ease-out 1}
/* further reading: unnumbered, directly below References (citation standard v0.2): a quiet chain of hollow nodes */
.further-reading h2{font-size:1.05rem;font-stretch:108%;margin:0 0 .8rem}
.article>section.further-reading{margin-top:-1.4rem}
.article>section.further-reading>h2{border-top-width:1px;border-top-color:var(--rule);padding-top:.8rem}
.article>section.further-reading>h2::before{width:10px;height:10px;top:-5.5px;background:var(--plate);border:2px solid var(--navy);box-sizing:border-box}
.wrap>.further-reading{margin-top:1.75rem;border-top:1px solid var(--rule);padding-top:.9rem}
.further-reading ul{list-style:none;margin:0 0 0 .3rem;padding:0 0 0 1.5rem;border-left:2px solid var(--rule-2);font-size:.88rem;line-height:1.55;max-width:84ch}
.further-reading li{position:relative;margin:0;padding:.2rem 0 .55rem}
.further-reading li:last-child{padding-bottom:.2rem}
.further-reading li::before{content:"";position:absolute;left:calc(-1.5rem - 6px);top:.62em;width:10px;height:10px;box-sizing:border-box;background:var(--paper);border:2px solid var(--navy-2)}
.further-reading a{word-break:break-word}
.further-reading .host{font-family:var(--f-mono);font-stretch:87.5%;font-size:.78em;color:var(--ink-2);overflow-wrap:anywhere}

/* ------------------------------------------------------------------ FAQ */
.faq details{border-bottom:1px solid var(--rule);padding:.8rem 0}
.faq summary{cursor:pointer;font-weight:700;color:var(--navy);list-style:none;display:flex;gap:.8rem;align-items:flex-start}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+";font-family:var(--f-mono);color:var(--signal-ink);font-weight:700;width:1rem;flex:none}
.faq details[open] summary::before{content:"\2212"}
.faq details p{margin:.6rem 0 0 1.8rem;max-width:var(--measure)}

/* ------------------------------------------------------------------ footer */
.site-foot{background:var(--navy);color:var(--on-navy);margin-top:4rem;font-size:.92rem}
.site-foot a{color:#fff;text-decoration-color:rgba(255,255,255,.4)}
.site-foot a:hover{color:var(--on-navy-accent)}
.foot-grid{display:grid;gap:2rem;padding-block:2.8rem 2rem}
@media (min-width:760px){.foot-grid{grid-template-columns:1.3fr 1fr 1.2fr 1.3fr}}
.foot-brand{display:flex;gap:.8rem;align-items:flex-start}
.foot-brand img{width:56px;height:56px;flex:none}
.foot-brand strong{color:#fff;font-stretch:115%;font-size:1.1rem;display:block}
.site-foot h2{color:var(--on-navy-accent);font-size:.92rem;font-stretch:104%;font-weight:700;margin:0 0 .7rem}
.site-foot ul{list-style:none;margin:0;padding:0}
.site-foot li{margin:.32rem 0}
.foot-steps{columns:2;column-gap:1rem}
.foot-steps li{break-inside:avoid}
.foot-steps .mono{color:var(--on-navy-accent);margin-right:.3rem}
.foot-base{background:linear-gradient(rgba(201,214,230,.25),rgba(201,214,230,.25)) no-repeat center top/calc(100% - 2 * var(--gutter)) 1px;padding-block:1.1rem 1.6rem;display:flex;flex-wrap:wrap;justify-content:space-between;gap:.6rem 2rem;font-size:.84rem}
.related-note{color:var(--on-navy);font-size:.86rem;display:block}

@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{.site-head nav,.route,.site-foot,.skip{display:none}body{background:#fff}.hero::before{display:none}}
.wrap>.references{border-top:2px solid var(--navy);padding-top:1rem;margin-top:2rem}