/* ─────────────────────────────────────────────────────────────
   The Machinery of Compliance — willowwhitman.com
   Dark editorial. Restrained by intent: the subject is abuse,
   so nothing here should feel playful or promotional.
   ───────────────────────────────────────────────────────────── */

:root{
  --bg:#0B0F1C;
  --bg-2:#0E1424;
  --surface:rgba(255,255,255,.035);
  --surface-2:rgba(255,255,255,.06);
  --border:rgba(255,255,255,.09);
  --border-2:rgba(255,255,255,.18);
  --fg:#F4F6FB;
  --fg-2:rgba(244,246,251,.74);
  --muted:rgba(244,246,251,.60);
  /* Fill/border accent. Only 4.21:1 on this navy, so it is never used for
     small text; --accent-text (7.07:1) carries that job. */
  --accent:#C4541A;
  --accent-hi:#E06A28;
  --accent-text:#E8834A;
  --accent-soft:rgba(196,84,26,.14);
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,"Times New Roman",serif;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
  --wrap:940px;
  --sect:clamp(64px,8vw,104px);
  --r:14px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
}

body{
  background:var(--bg);
  color:var(--fg);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* subtle machine-texture: concentric rings, barely there */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
  background:
    radial-gradient(1200px 700px at 78% -8%,rgba(196,84,26,.10),transparent 62%),
    radial-gradient(900px 600px at 6% 12%,rgba(120,150,220,.06),transparent 60%);
}
main,.nav,.foot{position:relative;z-index:1}

a{color:inherit;text-decoration:none}
p a{color:var(--accent-text);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;text-decoration-color:rgba(196,84,26,.45)}
p a:hover{color:var(--accent-hi);text-decoration-color:currentColor}
img{max-width:100%;height:auto;display:block}

:focus-visible{outline:2px solid var(--accent-hi);outline-offset:3px;border-radius:4px}
::selection{background:var(--accent);color:#fff}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:clamp(20px,5vw,40px)}
.narrow{max-width:var(--wrap)}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;padding:12px 18px;z-index:100;border-radius:0 0 8px 0}
.skip:focus{left:0}

/* ── typography ───────────────────────────────────────────── */
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.15;letter-spacing:-.015em}
h1{font-size:clamp(2.6rem,6.2vw,4.4rem);letter-spacing:-.03em}
h2{font-size:clamp(1.85rem,3.6vw,2.7rem)}
h3{font-size:clamp(1.2rem,2vw,1.45rem);margin-top:2.4em;margin-bottom:.5em}
h4{font-size:1.02rem;font-family:var(--sans);font-weight:650;letter-spacing:-.01em}
p{margin-bottom:1.15em;color:var(--fg-2)}
p:last-child{margin-bottom:0}

.eyebrow{
  font-family:var(--sans);font-size:.735rem;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--accent-text);
  margin-bottom:1.1em;
}
.small{font-size:.86rem;color:var(--muted);line-height:1.6}
.section-lede{font-size:1.08rem;color:var(--fg-2);max-width:62ch;margin-top:-.3em;margin-bottom:2.4em}

/* ── nav ──────────────────────────────────────────────────── */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(11,15,28,.82);
  backdrop-filter:saturate(150%) blur(14px);
  -webkit-backdrop-filter:saturate(150%) blur(14px);
  border-bottom:1px solid var(--border);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:66px}
.nav-brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:.98rem;letter-spacing:-.01em;white-space:nowrap}
.nav-brand .gear{
  width:26px;height:26px;flex:none;display:block;
  filter:drop-shadow(0 0 4px rgba(196,84,26,.35));
  animation:turn 20s linear infinite;
}
.nav-links{display:flex;align-items:center;gap:26px;list-style:none;font-size:.9rem}
.nav-links a{color:var(--fg-2);transition:color .16s ease}
.nav-links a:hover{color:var(--fg)}
.nav-cta{
  border:1px solid var(--accent);color:var(--accent-text)!important;
  padding:7px 15px;border-radius:999px;
  transition:background .16s ease,color .16s ease;
}
.nav-cta:hover{background:var(--accent);color:#fff!important}
@media (max-width:860px){
  .nav-links{gap:16px;font-size:.85rem}
}
@media (max-width:560px){
  .nav-links li:not(:last-child){display:none}
}

/* ── hero ─────────────────────────────────────────────────── */
.hero{padding:clamp(52px,7vw,92px) 0 clamp(46px,6vw,78px)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.32fr) minmax(0,.68fr);gap:clamp(32px,5vw,68px);align-items:center}
.subtitle{font-family:var(--serif);font-size:clamp(1.1rem,1.9vw,1.4rem);color:var(--fg-2);font-style:italic;margin-top:.55em;max-width:34ch;line-height:1.35}
.byline{font-size:.82rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-top:1.5em}
.lede{
  font-family:var(--serif);font-size:clamp(1.15rem,2vw,1.42rem);
  color:var(--fg);margin-top:1.5em;max-width:38ch;line-height:1.45;
  padding-left:20px;border-left:2px solid var(--accent);
}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:2.1em}
.btn{
  display:inline-block;padding:13px 24px;border-radius:999px;
  font-size:.925rem;font-weight:600;letter-spacing:.01em;
  transition:transform .16s ease,background .16s ease,border-color .16s ease,color .16s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hi)}
.btn-ghost{border:1px solid var(--border-2);color:var(--fg-2)}
.btn-ghost:hover{border-color:var(--accent);color:var(--fg)}

.facts{display:flex;flex-wrap:wrap;gap:28px;margin-top:2.6em;padding-top:1.7em;border-top:1px solid var(--border)}
.facts dt{font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:.35em}
.facts dd{font-size:.92rem;color:var(--fg-2)}
.facts a{color:var(--accent-text)}

.hero-cover img{
  border-radius:6px;
  box-shadow:0 30px 70px -20px rgba(0,0,0,.85),0 0 0 1px var(--border);
  transform:rotate(-1.1deg);
}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .hero-cover{max-width:270px;order:-1}
  .lede{max-width:none}
}

/* ── safety ───────────────────────────────────────────────── */
.safety{padding-bottom:clamp(28px,4vw,42px)}
.safety-box{
  border:1px solid rgba(196,84,26,.42);
  background:linear-gradient(180deg,var(--accent-soft),rgba(196,84,26,.04));
  border-radius:var(--r);padding:clamp(24px,3.4vw,34px);
}
.safety-box h2{font-size:clamp(1.15rem,2vw,1.4rem);margin-bottom:.7em;font-family:var(--sans);font-weight:650;letter-spacing:-.01em}
.safety-box h2 span{color:var(--accent-text);margin-right:.4em}
.safety-links{display:flex;flex-wrap:wrap;gap:10px;margin:1.2em 0 1em}
.safety-links a{
  background:rgba(255,255,255,.06);border:1px solid var(--border-2);
  padding:9px 17px;border-radius:999px;font-size:.9rem;font-weight:600;
  color:var(--fg)!important;text-decoration:none;transition:background .16s ease
}
.safety-links a:hover{background:var(--accent);border-color:var(--accent)}

/* ── bands ────────────────────────────────────────────────── */
.band{padding:var(--sect) 0;border-top:1px solid var(--border)}
.band-alt{background:var(--bg-2)}
.pull{
  font-family:var(--serif);font-size:clamp(1.2rem,2.1vw,1.5rem);
  color:var(--fg);line-height:1.4;margin:1.8em 0;padding-left:22px;
  border-left:2px solid var(--accent);
}

.scales{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;margin-top:2.4em}
.scales>div{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:20px;transition:border-color .18s ease,background .18s ease}
.scales>div:hover{border-color:var(--border-2);background:var(--surface-2)}
.scale-n{font-family:var(--serif);font-size:.8rem;color:var(--accent-text);letter-spacing:.1em;display:block;margin-bottom:.7em}
.scales h4{margin-bottom:.4em}
.scales p{font-size:.88rem;color:var(--muted);margin:0}

/* ── contents / search ────────────────────────────────────── */
.search-wrap{margin-bottom:1.6em}
#chapter-search{
  width:100%;max-width:520px;padding:14px 18px;font-size:.98rem;font-family:var(--sans);
  color:var(--fg);background:var(--surface);border:1px solid var(--border-2);border-radius:999px;
  transition:border-color .16s ease,background .16s ease;
}
#chapter-search::placeholder{color:var(--muted)}
#chapter-search:focus{border-color:var(--accent);background:var(--surface-2);outline:none}
.search-status{font-size:.84rem;color:var(--muted);margin-top:.8em;min-height:1.2em}

.toc{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:12px}
.part{border:1px solid var(--border);border-radius:var(--r);padding:20px 22px;background:var(--surface)}
.part[hidden]{display:none}
.part-name{
  font-family:var(--sans);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent-text);margin-bottom:.35em;
}
.part-title{font-family:var(--serif);font-size:1.06rem;color:var(--fg);margin-bottom:.95em;line-height:1.3}
.part ol{list-style:none;counter-reset:none}
.part li{
  font-size:.9rem;color:var(--fg-2);padding:5px 0 5px 30px;position:relative;line-height:1.45;
  border-bottom:1px solid rgba(255,255,255,.045);
}
.part li:last-child{border-bottom:0}
.part li[hidden]{display:none}
.part li .n{position:absolute;left:0;top:5px;font-size:.76rem;color:var(--muted);font-variant-numeric:tabular-nums}
.part li mark{background:var(--accent-soft);color:var(--fg);border-radius:3px;padding:0 2px}

/* ── tiers ────────────────────────────────────────────────── */
.tiers{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:14px;margin:2.2em 0 1em}
.tier{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:22px}
.tier-label{font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-text);display:block;margin-bottom:.7em}
.tier h3{margin:0 0 .5em;font-size:1.1rem}
.tier p{font-size:.87rem;color:var(--muted);margin:0}

/* ── download ─────────────────────────────────────────────── */
.read-band{border-top:1px solid var(--border)}
.download-grid{display:grid;gap:12px;margin:2em 0 1em}
.dl{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 16px;
  border:1px solid var(--border);background:var(--surface);border-radius:var(--r);
  padding:20px 22px;transition:border-color .18s ease,background .18s ease,transform .18s ease;
}
.dl:hover{border-color:var(--accent);background:var(--surface-2);transform:translateY(-1px)}
.dl-fmt{font-family:var(--serif);font-size:1.24rem;color:var(--fg);min-width:104px}
.dl-meta{font-size:.87rem;color:var(--muted)}
.ext{font-size:.8rem;color:var(--accent-text)}

.cite{background:var(--surface);border:1px solid var(--border);border-left:2px solid var(--accent);border-radius:var(--r);padding:20px 22px;margin-top:.8em}
.cite p{font-size:.93rem;color:var(--fg-2);margin:0}
.doi{color:var(--accent-text);white-space:nowrap}
.copy-btn{
  margin-top:14px;background:transparent;border:1px solid var(--border-2);color:var(--fg-2);
  font-family:var(--sans);font-size:.83rem;font-weight:600;padding:8px 16px;border-radius:999px;
  cursor:pointer;transition:border-color .16s ease,color .16s ease;
}
.copy-btn:hover{border-color:var(--accent);color:var(--fg)}
.copy-btn[data-done="1"]{border-color:var(--accent);color:var(--accent-text)}

/* ── resources ────────────────────────────────────────────── */
.res-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(275px,1fr));gap:14px;margin-top:1em}
.res{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:24px}
.res h3{margin:0 0 1em;font-size:1.08rem}
.res ul{list-style:none}
.res li{font-size:.89rem;color:var(--fg-2);padding:6px 0;border-bottom:1px solid rgba(255,255,255,.045);line-height:1.5}
.res li:last-child{border-bottom:0}
.res a{color:var(--accent-text);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(196,84,26,.4)}
.res a:hover{color:#F09A63}
.res .small{margin-top:1.1em}
ul.tags{display:flex;flex-wrap:wrap;gap:7px}
ul.tags li{
  border:1px solid var(--border-2);border-radius:999px;padding:5px 13px;
  font-size:.8rem;color:var(--fg-2);border-bottom:1px solid var(--border-2);
}

/* ── footer ───────────────────────────────────────────────── */
.foot{border-top:1px solid var(--border);padding:44px 0 56px;background:var(--bg-2)}
.foot-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px}
.foot-title{font-family:var(--serif);font-size:1.02rem;color:var(--fg);margin-bottom:.5em}
.foot .small{margin-bottom:.35em}
.foot a{color:var(--fg-2);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--border-2)}
.foot a:hover{color:var(--accent-text)}
.foot-legal{margin-top:28px;padding-top:18px;border-top:1px solid var(--border);line-height:2}

/* ── faq ──────────────────────────────────────────────────── */
.faq{margin-top:1.6em;border-top:1px solid var(--border)}
.faq details{border-bottom:1px solid var(--border)}
.faq summary{
  font-family:var(--serif);font-size:1.08rem;color:var(--fg);
  padding:19px 40px 19px 0;cursor:pointer;position:relative;list-style:none;
  line-height:1.35;transition:color .16s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent-text)}
.faq summary::after{
  content:"";position:absolute;right:8px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--accent-text);border-bottom:2px solid var(--accent-text);
  transform:translateY(-70%) rotate(45deg);transition:transform .2s ease;
}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq details p{padding:0 0 22px;font-size:.95rem;max-width:66ch}

/* ── structural tests ─────────────────────────────────────── */
.tests{list-style:none;counter-reset:t;margin:2em 0 1.6em;display:grid;gap:12px}
.tests li{
  counter-increment:t;position:relative;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  padding:22px 24px 22px 62px;
}
.tests li::before{
  content:counter(t,decimal-leading-zero);
  position:absolute;left:22px;top:23px;
  font-family:var(--serif);font-size:.85rem;color:var(--accent-text);
  font-variant-numeric:tabular-nums;
}
.tests h3{margin:0 0 .45em;font-size:1.06rem}
.tests p{font-size:.92rem;margin:0}

.caution{
  border-left:2px solid var(--accent);background:var(--accent-soft);
  border-radius:0 var(--r) var(--r) 0;padding:20px 22px;margin:1.8em 0;
}
.caution p{font-size:.91rem;margin:0}

/* ── quick exit (genre standard on DV resources) ───────────── */
.exit-btn{
  position:fixed;top:14px;right:14px;z-index:200;
  background:#B3341B;color:#fff;border:1px solid rgba(255,255,255,.28);
  font-family:var(--sans);font-size:.83rem;font-weight:700;letter-spacing:.02em;
  padding:9px 15px;border-radius:999px;cursor:pointer;
  box-shadow:0 4px 18px rgba(0,0,0,.5);
  transition:background .15s ease,transform .15s ease;
}
.exit-btn:hover{background:#D13E20;transform:translateY(-1px)}
.exit-btn span{margin-right:5px;font-weight:400}
@media (max-width:560px){
  .exit-btn{top:auto;bottom:14px;right:14px;padding:11px 17px;font-size:.86rem}
}

/* ── plain definition (built to be quotable by answer engines) */
.definition{
  border:1px solid var(--border-2);border-left:3px solid var(--accent);
  background:var(--surface);border-radius:0 var(--r) var(--r) 0;
  padding:22px 24px;margin:0 0 1.8em;
}
.definition p{font-size:1rem;color:var(--fg-2);margin:0}
.definition strong{color:var(--fg);font-weight:600}

/* ── hero hook + entry note ───────────────────────────────── */
.hero-hook{
  font-family:var(--serif);font-size:1.02rem;color:var(--fg-2);
  font-style:italic;margin-top:1.35em;max-width:44ch;
}
.cta-note{font-size:.85rem;color:var(--muted);margin-top:1.1em;max-width:52ch}

/* ── the short version: the on-page door ──────────────────── */
.short-band{background:var(--bg-2);border-top:1px solid var(--border)}
.short-band h3{font-size:1.25rem;margin-top:2.1em}
.short-band p{font-size:1.02rem}
.steps{list-style:none;margin:1.2em 0 1.4em;display:grid;gap:10px}
.steps li{
  position:relative;padding:14px 18px 14px 40px;font-size:.96rem;color:var(--fg-2);
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r);line-height:1.55;
}
.steps li::before{
  content:"";position:absolute;left:18px;top:22px;width:7px;height:7px;
  border-radius:50%;background:var(--accent);
}
.short-foot{
  margin-top:2.2em;padding-top:1.8em;border-top:1px solid var(--border);
}
.short-foot p:last-child{color:var(--fg)}

/* ── glossary ─────────────────────────────────────────────── */
.glossary dl{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:12px}
.glossary dl>div{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  padding:20px 22px;transition:border-color .18s ease;
}
.glossary dl>div:hover{border-color:var(--border-2)}
.glossary dt{
  font-family:var(--serif);font-size:1.06rem;color:var(--fg);
  margin-bottom:.5em;scroll-margin-top:84px;
}
.glossary dd{font-size:.9rem;color:var(--fg-2);line-height:1.6}

/* ── mobile navigation ────────────────────────────────────── */
.nav-toggle{
  display:none;background:transparent;border:0;cursor:pointer;
  width:40px;height:40px;padding:9px;flex:none;
}
.nav-toggle span{
  display:block;height:2px;background:var(--fg-2);border-radius:2px;
  transition:transform .22s ease,opacity .18s ease;
}
.nav-toggle span+span{margin-top:5px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media (max-width:760px){
  .nav-toggle{display:block}
  .nav-links{
    position:absolute;top:66px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(11,15,28,.98);
    backdrop-filter:saturate(150%) blur(14px);
    -webkit-backdrop-filter:saturate(150%) blur(14px);
    border-bottom:1px solid var(--border);
    max-height:0;overflow:hidden;transition:max-height .25s ease;
  }
  .nav-links.open{max-height:36rem}
  .nav-links li{display:block!important;border-top:1px solid var(--border)}
  .nav-links li:first-child{border-top:0}
  .nav-links a{display:block;padding:15px clamp(20px,5vw,40px);font-size:1rem}
  .nav-cta{
    border:0;border-radius:0;color:var(--accent-text)!important;
    padding:15px clamp(20px,5vw,40px)!important;font-weight:700;
  }
  .nav-cta:hover{background:transparent;color:var(--fg)!important}
}

/* ── back to top ──────────────────────────────────────────── */
.to-top{
  position:fixed;right:16px;bottom:16px;z-index:150;
  width:44px;height:44px;border-radius:50%;cursor:pointer;
  background:var(--surface-2);color:var(--fg);
  border:1px solid var(--border-2);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  font-size:1.05rem;line-height:1;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--accent);color:var(--accent-text)}
/* on phones the quick-exit sits bottom-right, so move this to the left */
@media (max-width:560px){ .to-top{right:auto;left:16px} }

/* ── print: the practical sections should survive paper ───── */
@media print{
  :root{--fg:#000;--fg-2:#1a1a1a;--muted:#444}
  body{background:#fff;color:#000;font-size:11pt;line-height:1.45}
  body::before{display:none}
  .nav,.exit-btn,.to-top,.search-wrap,.cta-row,.hero-cover,
  .download-grid,.copy-btn,.nav-toggle{display:none!important}
  .band,.hero{padding:0;border:0;background:#fff!important}
  .band-alt,.short-band{background:#fff!important}
  h1,h2,h3,h4{color:#000;page-break-after:avoid}
  p,li{orphans:3;widows:3}
  .steps li,.tests li,.tier,.res,.glossary dl>div,.definition,.caution,.safety-box,.cite{
    background:#fff!important;border:1px solid #bbb!important;page-break-inside:avoid;
  }
  .faq details{page-break-inside:avoid}
  .faq details p{display:block!important}
  a{color:#000;text-decoration:underline}
  /* show link targets on paper, since a printed link is otherwise useless */
  .res a::after,.safety-links a::after{content:" (" attr(href) ")";font-size:9pt;color:#444}
  #short,#recognising{page-break-before:always}
}

/* ── slow rusted gearwork, well behind the text ───────────── */
.gearfield{
  position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;
  contain:strict;
}
.gearfield>svg:first-child{position:absolute;width:0;height:0}
.gearfield .gear{
  position:absolute;opacity:.085;
  transform-origin:50% 50%;          /* rotate about the hub, not a corner */
  will-change:transform;
  animation:turn 70s linear infinite;
}
@keyframes turn{ to{ transform:rotate(360deg) } }
@keyframes turn-rev{ to{ transform:rotate(-360deg) } }

.gearfield .gear-a{width:46vmin;height:46vmin;top:-9vmin;right:-11vmin;animation-duration:74s}
.gearfield .gear-b{width:30vmin;height:30vmin;top:24vmin;right:16vmin;animation-name:turn-rev;animation-duration:48s}
.gearfield .gear-c{width:60vmin;height:60vmin;bottom:-18vmin;left:-16vmin;animation-duration:96s}
.gearfield .gear-d{width:24vmin;height:24vmin;bottom:22vmin;left:20vmin;animation-name:turn-rev;animation-duration:38s;opacity:.07}

@media (max-width:700px){
  .gearfield .gear-b,.gearfield .gear-d{display:none}          /* less to paint on phones */
  .gearfield .gear{opacity:.07}
}
@media (prefers-reduced-motion:reduce){
  .gearfield .gear,.nav-brand .gear{animation:none}   /* still there, simply not turning */
}

/* ── sources ──────────────────────────────────────────────── */
.srcs{list-style:none;margin:.6em 0 2em;display:grid;gap:2px}
.srcs li{
  padding:13px 0 13px 18px;border-left:2px solid var(--border);
  font-size:.94rem;color:var(--fg-2);line-height:1.55;
  transition:border-color .18s ease;
}
.srcs li:hover{border-left-color:var(--accent)}
.srcs cite{font-style:italic;color:var(--fg);font-weight:500}
.srcs strong{color:var(--fg);font-weight:600}
.srcs span{display:block;margin-top:.3em;font-size:.87rem;color:var(--muted)}
.srcs a{color:var(--accent-text);text-decoration:underline;text-underline-offset:3px;
        text-decoration-color:rgba(196,84,26,.4)}
.srcs a:hover{color:#F09A63}

/* ── diagrams ─────────────────────────────────────────────── */
.dia{margin:2.2em 0 2em}
.dia svg{width:100%;height:auto;display:block;overflow:visible}
.dia figcaption{
  margin-top:1em;font-size:.86rem;color:var(--muted);line-height:1.6;
  padding-left:16px;border-left:2px solid var(--border);
}
.d-cap{fill:var(--accent-text);font-family:var(--sans);font-size:11px;
       font-weight:600;letter-spacing:.16em}
.d-row rect{fill:url(#dg);stroke:rgba(196,84,26,.45);stroke-width:1}
.d-row text{fill:#F4F6FB;font-family:var(--sans);font-size:14px;font-weight:600}
.d-sub{fill:rgba(244,246,251,.66)!important;font-size:11.5px!important;font-weight:400!important}
.d-axis{stroke:var(--border-2);stroke-width:1}
.d-axis-l{fill:rgba(244,246,251,.5);font-family:var(--sans);font-size:11px}
.d-tier rect{fill:rgba(255,255,255,.04);stroke:var(--border);stroke-width:1}
.d-tier.t1 rect{stroke:rgba(196,84,26,.75)}
.d-tier.t2 rect{stroke:rgba(196,84,26,.42)}
.d-tier.t3 rect{stroke:rgba(196,84,26,.20)}
.d-tier text{fill:#F4F6FB;font-family:var(--sans);font-size:14px;font-weight:600}
@media (max-width:560px){
  .d-row text,.d-tier text{font-size:16px}
  .d-sub{font-size:13px!important}
}

/* ── nav spacing ──────────────────────────────────────────── */
/* The bar gets a wider track than the prose: 8 items + wordmark never fit
   the 940px measure, and the text column shouldn't widen just to suit them. */
.nav .wrap{max-width:1160px}
.nav-inner{flex-wrap:nowrap;gap:32px}
.nav-brand{min-width:0;overflow:hidden;text-overflow:ellipsis}
.nav-links{flex:0 0 auto;gap:clamp(14px,1.9vw,28px);white-space:nowrap}
.nav-links a{white-space:nowrap}

/* hide the wordmark before the links start crushing, not after */
@media (max-width:1120px){ .nav-brand span:last-child{display:none} }
/* keep the fixed Quick-exit button clear of the nav CTA on laptop widths */
@media (min-width:761px) and (max-width:1365px){ .nav-inner{padding-right:140px} }
/* tighter link spacing while the Quick-exit reserve is active, so the wordmark still fits */
@media (min-width:1121px) and (max-width:1365px){
  .nav-inner{gap:24px}
  .nav-links{gap:15px;font-size:.86rem}
}
@media (max-width:900px) and (min-width:761px){
  .nav-links{font-size:.82rem;gap:14px}
  .nav-cta{padding:6px 12px}
  /* two fewer links so the row clears the fixed Quick-exit button */
  .nav-links li:has(a[href="#glossary"]),
  .nav-links li:has(a[href="#sources"]){display:none}
}