/* ==========================================================================
   XR Vision Labs — design system
   Ink & paper editorial. Lattice motif. Wax-seal accent.
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root{
  /* Paper side */
  --paper:#F6F4EF;
  --paper-card:#FFFFFF;
  --paper-sunk:#EDEAE1;
  --paper-tint:#F0EEE7;

  /* Ink side */
  --deep:#0D1524;
  --deep-2:#131E33;
  --deep-3:#1B2942;
  --on-deep:#EFEDE7;
  --on-deep-dim:#9EAAC0;
  --on-deep-faint:#6E7C96;

  /* Text on paper */
  --ink:#111A2B;
  --ink-soft:#44506A;
  --ink-faint:#78839A;

  /* Rules */
  --rule:#DCD6CA;
  --rule-strong:#C6BFB0;
  --rule-deep:rgba(239,237,231,.16);
  --rule-deep-strong:rgba(239,237,231,.30);

  /* Accents */
  --blue:#1B3568;
  --blue-line:#4A6FA8;
  --blue-bright:#2F6BE4;
  --blue-soft:rgba(47,107,228,.10);
  --seal:#B55A28;
  --seal-deep:#9C4A1E;
  --seal-bright:#E08A50;
  --seal-soft:rgba(181,90,40,.10);
  --verify:#1C6E4C;
  --verify-soft:rgba(28,110,76,.10);

  /* Type */
  --font-display:Georgia,"Iowan Old Style","Palatino Linotype","Book Antiqua","Times New Roman",serif;
  --font-body:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,"Cascadia Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;

  /* Metrics */
  --wrap:1180px;
  --wrap-narrow:820px;
  --gut:clamp(1.15rem,4vw,2.5rem);
  --sec:clamp(4rem,9vw,7.5rem);
  --r-sm:3px;
  --r:5px;
  --r-lg:8px;

  --shadow-card:0 1px 2px rgba(17,26,43,.05),0 12px 28px -16px rgba(17,26,43,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--font-body);font-size:1rem;line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);font-weight:600;line-height:1.14;letter-spacing:-.012em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2.5px solid var(--blue-bright);outline-offset:3px;border-radius:2px}
:is(.on-deep,.hero,.pagehead,.cta-band) :focus-visible{outline-color:#8FB4FF}
::selection{background:rgba(47,107,228,.22)}

.visually-hidden{position:absolute !important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--deep);color:var(--on-deep);padding:.8rem 1.3rem;font-size:.85rem;font-weight:600}
.skip-link:focus{left:.5rem;top:.5rem}

/* ---------- 3. Layout ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
.wrap-narrow{max-width:var(--wrap-narrow)}
.section{padding-block:var(--sec)}
.section-tight{padding-block:clamp(2.75rem,6vw,4.5rem)}
.on-deep{background:var(--deep);color:var(--on-deep)}
:is(.on-deep,.hero,.pagehead,.cta-band) h1,:is(.on-deep,.hero,.pagehead,.cta-band) h2,:is(.on-deep,.hero,.pagehead,.cta-band) h3,:is(.on-deep,.hero,.pagehead,.cta-band) h4{color:var(--on-deep)}
.on-sunk{background:var(--paper-sunk)}

/* ---------- 4. Type scale ---------- */
.t-hero{font-size:clamp(2.35rem,6.2vw,4.35rem);line-height:1.04;letter-spacing:-.024em}
.t-h2{font-size:clamp(1.85rem,4.1vw,3rem);line-height:1.1;letter-spacing:-.018em}
.t-h3{font-size:clamp(1.28rem,2.4vw,1.7rem);line-height:1.2;letter-spacing:-.012em}
.t-h4{font-size:clamp(1.06rem,1.7vw,1.2rem);line-height:1.3;letter-spacing:-.006em}
.t-lead{font-size:clamp(1.06rem,1.9vw,1.28rem);line-height:1.6;color:var(--ink-soft)}
:is(.on-deep,.hero,.pagehead,.cta-band) .t-lead{color:var(--on-deep-dim)}
.t-body{font-size:1rem;line-height:1.7;color:var(--ink-soft)}
:is(.on-deep,.hero,.pagehead,.cta-band) .t-body{color:var(--on-deep-dim)}
.t-sm{font-size:.895rem;line-height:1.62;color:var(--ink-soft)}
:is(.on-deep,.hero,.pagehead,.cta-band) .t-sm{color:var(--on-deep-dim)}
.t-xs{font-size:.8rem;line-height:1.55;color:var(--ink-faint)}
:is(.on-deep,.hero,.pagehead,.cta-band) .t-xs{color:var(--on-deep-faint)}
.mono{font-family:var(--font-mono);font-size:.8em;letter-spacing:-.01em}
.t-serif{font-family:var(--font-display)}
em.hl{font-style:normal;color:var(--blue);font-family:var(--font-display)}
:is(.on-deep,.hero,.pagehead,.cta-band) em.hl{color:#93B4FF}

/* Eyebrow — seal tick + letterspaced caps (signature) */
.eyebrow{
  display:flex;align-items:center;gap:.6rem;
  font-size:.715rem;font-weight:700;text-transform:uppercase;letter-spacing:.15em;
  color:var(--ink-faint);margin:0 0 1.15rem;
}
:is(.on-deep,.hero,.pagehead,.cta-band) .eyebrow{color:var(--on-deep-faint)}
.eyebrow::before{
  content:"";flex:none;width:9px;height:9px;
  background:var(--seal);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
}

/* ---------- 5. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.78rem 1.4rem;border:1.5px solid transparent;border-radius:var(--r);
  font-size:.905rem;font-weight:600;letter-spacing:.005em;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn .arw{transition:transform .22s var(--ease)}
.btn:hover .arw{transform:translateX(3px)}
.btn-primary{background:var(--blue);color:#fff;border-color:var(--blue);box-shadow:0 10px 22px -14px rgba(30,58,138,.9)}
.btn-primary:hover{background:#122647;border-color:#122647}
:is(.on-deep,.hero,.pagehead,.cta-band) .btn-primary{background:var(--on-deep);color:var(--deep);border-color:var(--on-deep)}
:is(.on-deep,.hero,.pagehead,.cta-band) .btn-primary:hover{background:#fff;border-color:#fff}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--rule-strong)}
.btn-ghost:hover{border-color:var(--ink);background:rgba(17,26,43,.035)}
:is(.on-deep,.hero,.pagehead,.cta-band) .btn-ghost{color:var(--on-deep);border-color:var(--rule-deep-strong)}
:is(.on-deep,.hero,.pagehead,.cta-band) .btn-ghost:hover{border-color:var(--on-deep);background:rgba(239,237,231,.07)}
.btn-seal{background:var(--seal-deep);color:#fff;border-color:var(--seal-deep)}
.btn-seal:hover{background:#7E3A14;border-color:#7E3A14}
.btn-row{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}

.tlink{
  display:inline-flex;align-items:center;gap:.45rem;
  font-size:.885rem;font-weight:600;color:var(--blue);
  border-bottom:1.5px solid var(--blue-soft);padding-bottom:2px;
  transition:border-color .18s var(--ease),gap .18s var(--ease);
}
.tlink:hover{border-color:var(--blue);gap:.65rem}
:is(.on-deep,.hero,.pagehead,.cta-band) .tlink{color:#93B4FF;border-color:rgba(147,180,255,.24)}
:is(.on-deep,.hero,.pagehead,.cta-band) .tlink:hover{border-color:#93B4FF}

/* ---------- 6. Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(246,244,239,.88);backdrop-filter:blur(14px) saturate(1.5);
  -webkit-backdrop-filter:blur(14px) saturate(1.5);
  border-bottom:1px solid var(--rule);
}
.site-header.is-scrolled{box-shadow:0 1px 20px -6px rgba(17,26,43,.18)}
.header-inner{display:flex;align-items:center;gap:1.5rem;min-height:70px}
.brand{display:flex;align-items:center;gap:.65rem;flex:none;padding-block:.4rem}
.brand-mark{flex:none;width:32px;height:32px}
.brand-word{display:flex;flex-direction:column;line-height:1}
.brand-word b{font-family:var(--font-display);font-size:1.045rem;font-weight:600;letter-spacing:-.008em;color:var(--ink)}
.brand-word small{font-size:.575rem;font-weight:700;letter-spacing:.235em;text-transform:uppercase;color:var(--ink-faint);margin-top:3px}
.brand:hover .brand-seal{fill:var(--seal-bright)}

.site-nav{margin-left:auto;display:flex;align-items:center;gap:1.9rem}
.nav-list{display:flex;align-items:center;gap:1.55rem}
.nav-list a{
  position:relative;font-size:.885rem;font-weight:500;color:var(--ink-soft);
  padding-block:.3rem;transition:color .16s var(--ease);
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:100%;bottom:-2px;height:1.5px;
  background:var(--seal);transition:right .24s var(--ease);
}
.nav-list a:hover{color:var(--ink)}
.nav-list a:hover::after,.nav-list a[aria-current="page"]::after{right:0}
.nav-list a[aria-current="page"]{color:var(--ink);font-weight:600}
.nav-cta{
  font-size:.855rem;font-weight:600;color:var(--paper);background:var(--deep);
  padding:.55rem 1.05rem;border-radius:var(--r);transition:background .18s var(--ease);
}
.nav-cta:hover{background:var(--blue)}

.nav-toggle{
  display:none;margin-left:auto;background:none;border:1px solid var(--rule-strong);
  border-radius:var(--r);width:42px;height:38px;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:17px;height:1.5px;background:var(--ink);position:relative;transition:background .16s}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:17px;height:1.5px;background:var(--ink);transition:transform .22s var(--ease)}
.nav-toggle span::before{top:-5.5px}
.nav-toggle span::after{top:5.5px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(5.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-5.5px) rotate(-45deg)}

@media (max-width:1040px){
  .nav-toggle{display:flex}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;margin:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--rule);
    padding:.5rem var(--gut) 1.4rem;
    box-shadow:0 22px 40px -24px rgba(17,26,43,.4);
    display:none;
  }
  .site-nav.is-open{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list a{padding:.85rem 0;border-bottom:1px solid var(--rule);font-size:.98rem}
  .nav-list a::after{display:none}
  .nav-cta{margin-top:1.1rem;text-align:center}
}

/* ---------- 7. Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--deep);color:var(--on-deep);isolation:isolate}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background:
    radial-gradient(900px 520px at 78% -10%,rgba(47,107,228,.20),transparent 62%),
    radial-gradient(620px 420px at 8% 108%,rgba(181,90,40,.16),transparent 66%);
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(rgba(239,237,231,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(239,237,231,.045) 1px,transparent 1px);
  background-size:58px 58px;
  -webkit-mask-image:radial-gradient(120% 90% at 50% 12%,#000 22%,transparent 76%);
  mask-image:radial-gradient(120% 90% at 50% 12%,#000 22%,transparent 76%);
}
.hero-inner{padding-block:clamp(3.75rem,9vw,7rem) clamp(3.25rem,7vw,5.5rem)}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:clamp(2.25rem,5vw,4.25rem);align-items:center}
@media (max-width:940px){.hero-grid{grid-template-columns:1fr;gap:2.75rem}}
.hero h1{margin-bottom:1.4rem;color:var(--on-deep)}
.hero .t-lead{max-width:38ch}

.pagehead{position:relative;overflow:hidden;background:var(--deep);color:var(--on-deep);isolation:isolate}
.pagehead::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background:radial-gradient(760px 440px at 82% -18%,rgba(47,107,228,.18),transparent 64%);
}
.pagehead::after{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(115deg,rgba(239,237,231,.05) 1px,transparent 1px),linear-gradient(65deg,rgba(239,237,231,.05) 1px,transparent 1px);
  background-size:34px 34px;
  -webkit-mask-image:linear-gradient(to bottom,#000,transparent 88%);
  mask-image:linear-gradient(to bottom,#000,transparent 88%);
}
.pagehead-inner{padding-block:clamp(3rem,7vw,5.25rem) clamp(2.75rem,6vw,4.25rem)}
.pagehead-inner > *{max-width:62ch}
.pagehead h1{margin-bottom:1.15rem;font-size:clamp(2.05rem,5vw,3.5rem);line-height:1.06;letter-spacing:-.022em}

.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;font-size:.755rem;letter-spacing:.09em;text-transform:uppercase;font-weight:600;color:var(--on-deep-faint);margin-bottom:1.35rem}
.crumbs a:hover{color:var(--on-deep)}
.crumbs span[aria-hidden]{color:var(--seal-bright)}

/* ---------- 8. Section heading ---------- */
.sec-head{max-width:62ch;margin-bottom:clamp(2.25rem,4.5vw,3.5rem)}
.sec-head.center{margin-inline:auto;text-align:center}
.sec-head.center .eyebrow{justify-content:center}
.sec-head h2{margin-bottom:1rem}
.sec-head-split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(1.5rem,4vw,3.5rem);align-items:end;margin-bottom:clamp(2.25rem,4.5vw,3.5rem)}
.sec-head-split h2{margin-bottom:.85rem}
@media (max-width:820px){.sec-head-split{grid-template-columns:1fr;gap:1.1rem;align-items:start}}

/* ---------- 9. Rule ---------- */
.hr{height:1px;background:var(--rule);border:0;margin:0}
:is(.on-deep,.hero,.pagehead,.cta-band) .hr{background:var(--rule-deep)}

/* ---------- 10. Cards ---------- */
.grid{display:grid;gap:1.15rem}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:960px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:660px){.g2,.g3,.g4{grid-template-columns:1fr}}

.card{
  position:relative;background:var(--paper-card);border:1px solid var(--rule);
  border-radius:var(--r-lg);padding:1.65rem 1.55rem;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.card h3,.card h4{margin-bottom:.6rem}
:is(.on-deep,.hero,.pagehead,.cta-band) .card{background:var(--deep-2);border-color:var(--rule-deep)}
a.card:hover{border-color:var(--rule-strong);box-shadow:var(--shadow-card);transform:translateY(-2px)}
:is(.on-deep,.hero,.pagehead,.cta-band) a.card:hover{border-color:var(--rule-deep-strong);background:var(--deep-3)}

.card-ruled{padding-top:1.55rem;border-top:3px solid var(--rule-strong)}
.card-ruled.seal{border-top-color:var(--seal)}
.card-ruled.blue{border-top-color:var(--blue)}
.card-ruled.verify{border-top-color:var(--verify)}

/* Pillar card — the four-pillar signature block */
.pillar{
  display:flex;flex-direction:column;gap:.85rem;
  background:var(--paper-card);border:1px solid var(--rule);border-radius:var(--r-lg);
  padding:1.75rem 1.6rem 1.6rem;position:relative;overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.pillar::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--seal),var(--blue));
  transform:scaleX(.16);transform-origin:left;transition:transform .4s var(--ease);
}
.pillar:hover{border-color:var(--rule-strong);box-shadow:var(--shadow-card);transform:translateY(-3px)}
.pillar:hover::before{transform:scaleX(1)}
.pillar-ico{width:38px;height:38px;color:var(--blue)}
.pillar-n{
  position:absolute;top:1.2rem;right:1.3rem;
  font-family:var(--font-mono);font-size:.72rem;font-weight:700;color:var(--ink-faint);letter-spacing:.06em;
}
.pillar h3{margin:0;font-size:1.16rem}
.pillar .t-sm{flex:1}
.pillar-foot{display:flex;align-items:center;gap:.4rem;font-size:.815rem;font-weight:600;color:var(--blue);margin-top:.25rem}
.pillar-foot .arw{transition:transform .22s var(--ease)}
.pillar:hover .pillar-foot .arw{transform:translateX(3px)}

/* ---------- 11. Stat strip ---------- */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule);border-radius:var(--r-lg);overflow:hidden}
:is(.on-deep,.hero,.pagehead,.cta-band) .stats{background:var(--rule-deep);border-color:var(--rule-deep)}
@media (max-width:820px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:460px){.stats{grid-template-columns:1fr}}
.stat{background:var(--paper-card);padding:1.5rem 1.35rem}
:is(.on-deep,.hero,.pagehead,.cta-band) .stat{background:var(--deep)}
.stat b{display:block;font-family:var(--font-display);font-size:clamp(1.7rem,3.4vw,2.35rem);font-weight:600;letter-spacing:-.02em;color:var(--ink);line-height:1.05}
:is(.on-deep,.hero,.pagehead,.cta-band) .stat b{color:var(--on-deep)}
.stat b .u{font-size:.55em;color:var(--seal-deep);margin-left:.12em;letter-spacing:0}
:is(.on-deep,.hero,.pagehead,.cta-band) .stat b .u{color:var(--seal-bright)}
.stat span{display:block;margin-top:.5rem;font-size:.8rem;line-height:1.5;color:var(--ink-faint)}
:is(.on-deep,.hero,.pagehead,.cta-band) .stat span{color:var(--on-deep-faint)}

/* ---------- 12. The spine ---------- */
.spine{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;position:relative;margin-top:2.5rem}
@media (max-width:900px){.spine{grid-template-columns:1fr}}
.spine-node{position:relative;padding:2.4rem 1.4rem 1.6rem;border-left:1px solid var(--rule-deep)}
.spine-node:first-child{border-left:0}
@media (max-width:900px){
  .spine-node,.spine-node:first-child{border-left:1px solid var(--rule-deep);padding:.4rem 0 2rem 1.75rem}
}
.spine-node::before{
  content:"";position:absolute;top:0;left:-6.5px;width:12px;height:12px;
  background:var(--deep);border:2px solid var(--seal);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
}
.spine-node:first-child::before{left:0}
@media (max-width:900px){
  .spine-node::before,.spine-node:first-child::before{top:.55rem;left:-6.5px}
}
.spine-node .k{font-family:var(--font-mono);font-size:.7rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--seal-bright);display:block;margin-bottom:.6rem}
.spine-node h3{font-size:1.15rem;margin-bottom:.5rem;color:var(--on-deep)}

/* ---------- 13. Figures ---------- */
.fig{
  position:relative;border:1px solid var(--rule-deep);border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(47,107,228,.09),rgba(13,21,36,0) 55%),var(--deep-2);
  padding:1.5rem;overflow:hidden;
}
.fig-paper{border-color:var(--rule);background:linear-gradient(160deg,rgba(47,107,228,.05),rgba(255,255,255,0) 55%),var(--paper-card)}
.fig-cap{
  display:flex;align-items:center;gap:.5rem;margin-top:1.1rem;padding-top:.85rem;
  border-top:1px solid var(--rule-deep);
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.05em;color:var(--on-deep-faint);text-transform:uppercase;
}
.fig-paper .fig-cap{border-top-color:var(--rule);color:var(--ink-faint)}

.lat-pulse{animation:latp 3.4s var(--ease) infinite}
@keyframes latp{0%,100%{opacity:.25}50%{opacity:1}}
.lat-dash{stroke-dasharray:4 5;animation:latd 2.4s linear infinite}
@keyframes latd{to{stroke-dashoffset:-18}}

/* ---------- 14. Ledger block ---------- */
.ledger{display:flex;flex-direction:column;gap:.55rem}
.ledger-row{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:.85rem;align-items:center;
  background:rgba(239,237,231,.035);border:1px solid var(--rule-deep);border-radius:var(--r);
  padding:.7rem .85rem;
}
.fig-paper .ledger-row{background:var(--paper-tint);border-color:var(--rule)}
.ledger-seq{font-family:var(--font-mono);font-size:.68rem;font-weight:700;color:var(--seal-bright);letter-spacing:.05em}
.fig-paper .ledger-seq{color:var(--seal-deep)}
.ledger-body{min-width:0}
.ledger-body b{display:block;font-size:.815rem;font-weight:600;color:var(--on-deep);font-family:var(--font-body)}
.fig-paper .ledger-body b{color:var(--ink)}
.ledger-body code{
  display:block;font-family:var(--font-mono);font-size:.655rem;color:var(--on-deep-faint);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:.16rem;letter-spacing:-.01em;
}
.fig-paper .ledger-body code{color:var(--ink-faint)}
.ledger-flag{
  font-family:var(--font-mono);font-size:.62rem;font-weight:700;letter-spacing:.09em;
  padding:.2rem .42rem;border-radius:2px;white-space:nowrap;
  color:#5FD3A0;background:rgba(95,211,160,.11);border:1px solid rgba(95,211,160,.3);
}
.fig-paper .ledger-flag{color:var(--verify);background:var(--verify-soft);border-color:rgba(28,110,76,.3)}

/* ---------- 15. Spec table ---------- */
.spec{width:100%;border-collapse:collapse;font-size:.875rem}
.spec caption{text-align:left;font-family:var(--font-mono);font-size:.7rem;text-transform:uppercase;letter-spacing:.12em;color:var(--ink-faint);padding:.9rem 0}
:is(.on-deep,.hero,.pagehead,.cta-band) .spec caption{color:var(--on-deep-faint)}
.spec th,.spec td{text-align:left;padding:.82rem .9rem;border-bottom:1px solid var(--rule);vertical-align:top}
.spec thead th{
  font-family:var(--font-body);font-size:.715rem;font-weight:700;text-transform:uppercase;letter-spacing:.11em;
  color:var(--ink-faint);border-bottom:1.5px solid var(--rule-strong);
}
.spec tbody th{font-weight:600;color:var(--ink);font-family:var(--font-body)}
.spec td{color:var(--ink-soft)}
.spec tbody tr:last-child th,.spec tbody tr:last-child td{border-bottom:0}
.spec tbody tr:hover{background:var(--paper-tint)}
:is(.on-deep,.hero,.pagehead,.cta-band) .spec th,:is(.on-deep,.hero,.pagehead,.cta-band) .spec td{border-bottom-color:var(--rule-deep)}
:is(.on-deep,.hero,.pagehead,.cta-band) .spec thead th{color:var(--on-deep-faint);border-bottom-color:var(--rule-deep-strong)}
:is(.on-deep,.hero,.pagehead,.cta-band) .spec tbody th{color:var(--on-deep)}
:is(.on-deep,.hero,.pagehead,.cta-band) .spec td{color:var(--on-deep-dim)}
:is(.on-deep,.hero,.pagehead,.cta-band) .spec tbody tr:hover{background:rgba(239,237,231,.03)}
.spec .nw{white-space:nowrap}
.table-scroll{overflow-x:auto;border:1px solid var(--rule);border-radius:var(--r-lg);background:var(--paper-card);padding:0 1.1rem}
:is(.on-deep,.hero,.pagehead,.cta-band) .table-scroll{border-color:var(--rule-deep);background:var(--deep-2)}

/* ---------- 16. Part masthead ---------- */
.part{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:1.25rem;align-items:start;
  background:var(--paper-card);border:1px solid var(--rule);border-radius:var(--r-lg);
  padding:1.6rem;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.part:hover{border-color:var(--rule-strong);box-shadow:var(--shadow-card)}
@media (max-width:720px){.part{grid-template-columns:1fr;gap:1rem}}
.part-code{
  font-family:var(--font-mono);font-size:.78rem;font-weight:700;letter-spacing:.02em;
  color:#fff;background:var(--deep);padding:.42rem .6rem;border-radius:var(--r-sm);white-space:nowrap;
  align-self:start;
}
.part-stage{
  font-family:var(--font-mono);font-size:.65rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-faint);border:1px solid var(--rule-strong);padding:.28rem .5rem;border-radius:2px;white-space:nowrap;align-self:start;
}
.part h3{font-size:1.12rem;margin-bottom:.4rem}

/* ---------- 17. Chips ---------- */
.chips{display:flex;flex-wrap:wrap;gap:.42rem;margin-top:.9rem}
.chip{
  font-family:var(--font-mono);font-size:.665rem;font-weight:600;letter-spacing:.045em;
  color:var(--ink-soft);background:var(--paper-tint);border:1px solid var(--rule);
  padding:.26rem .5rem;border-radius:2px;
}
:is(.on-deep,.hero,.pagehead,.cta-band) .chip{color:var(--on-deep-dim);background:rgba(239,237,231,.05);border-color:var(--rule-deep)}
.chip.b{color:var(--blue);background:var(--blue-soft);border-color:rgba(47,107,228,.22)}
.chip.s{color:var(--seal-deep);background:var(--seal-soft);border-color:rgba(181,90,40,.26)}
:is(.on-deep,.hero,.pagehead,.cta-band) .chip.b{color:#93B4FF;background:rgba(47,107,228,.15);border-color:rgba(147,180,255,.28)}

/* ---------- 18. Steps ---------- */
.steps{counter-reset:st;display:grid;gap:1px;background:var(--rule);border:1px solid var(--rule);border-radius:var(--r-lg);overflow:hidden}
:is(.on-deep,.hero,.pagehead,.cta-band) .steps{background:var(--rule-deep);border-color:var(--rule-deep)}
.step{counter-increment:st;background:var(--paper-card);padding:1.5rem 1.5rem 1.5rem 4.1rem;position:relative}
:is(.on-deep,.hero,.pagehead,.cta-band) .step{background:var(--deep-2)}
.step::before{
  content:counter(st,decimal-leading-zero);
  position:absolute;left:1.5rem;top:1.62rem;
  font-family:var(--font-mono);font-size:.76rem;font-weight:700;color:var(--seal-deep);letter-spacing:.02em;
}
:is(.on-deep,.hero,.pagehead,.cta-band) .step::before{color:var(--seal-bright)}
.step h3{font-size:1.06rem;margin-bottom:.42rem}
@media (max-width:560px){.step{padding:2.7rem 1.4rem 1.5rem}.step::before{top:1.2rem;left:1.4rem}}

/* ---------- 19. Checklist ---------- */
.checks{display:grid;gap:.78rem}
.checks li{
  position:relative;padding-left:1.35rem;
  font-size:.905rem;line-height:1.6;color:var(--ink-soft);
}
:is(.on-deep,.hero,.pagehead,.cta-band) .checks li{color:var(--on-deep-dim)}
.checks li::before{
  content:"";position:absolute;left:0;top:.53em;width:7px;height:7px;
  background:var(--seal);clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
}
:is(.on-deep,.hero,.pagehead,.cta-band) .checks li::before{background:var(--seal-bright)}
.checks li b,.checks li strong{color:var(--ink);font-weight:600}
:is(.on-deep,.hero,.pagehead,.cta-band) .checks li b,:is(.on-deep,.hero,.pagehead,.cta-band) .checks li strong{color:var(--on-deep)}

/* ---------- 20. Standards ---------- */
.stds{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule);border-radius:var(--r-lg);overflow:hidden}
:is(.on-deep,.hero,.pagehead,.cta-band) .stds{background:var(--rule-deep);border-color:var(--rule-deep)}
.std{background:var(--paper-card);padding:1.05rem 1.15rem;display:flex;gap:.7rem;align-items:flex-start}
:is(.on-deep,.hero,.pagehead,.cta-band) .std{background:var(--deep-2)}
.std svg{flex:none;width:16px;height:16px;margin-top:.2rem;color:var(--verify)}
:is(.on-deep,.hero,.pagehead,.cta-band) .std svg{color:#5FD3A0}
.std b{display:block;font-size:.85rem;font-weight:600;color:var(--ink);font-family:var(--font-body)}
:is(.on-deep,.hero,.pagehead,.cta-band) .std b{color:var(--on-deep)}
.std span{display:block;font-size:.775rem;color:var(--ink-faint);margin-top:.15rem;line-height:1.5}
:is(.on-deep,.hero,.pagehead,.cta-band) .std span{color:var(--on-deep-faint)}

/* ---------- 21. Pull quote ---------- */
.pull{
  border-left:3px solid var(--seal);padding:.35rem 0 .35rem 1.5rem;
  font-family:var(--font-display);font-size:clamp(1.2rem,2.6vw,1.62rem);line-height:1.4;
  letter-spacing:-.012em;color:var(--ink);
}
:is(.on-deep,.hero,.pagehead,.cta-band) .pull{color:var(--on-deep);border-left-color:var(--seal-bright)}

/* ---------- 22. CTA band ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--deep);color:var(--on-deep);isolation:isolate}
.cta-band::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:radial-gradient(680px 380px at 88% 8%,rgba(47,107,228,.20),transparent 62%),
             radial-gradient(520px 320px at 4% 96%,rgba(181,90,40,.17),transparent 66%);
}
.cta-band .wrap{padding-block:clamp(3.25rem,7vw,5rem)}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.15fr) auto;gap:2rem;align-items:center}
@media (max-width:820px){.cta-inner{grid-template-columns:1fr;gap:1.5rem}}
.cta-inner .btn-row{margin-top:0}

/* ---------- 23. Footer ---------- */
.site-footer{background:var(--deep-2);color:var(--on-deep-dim);border-top:1px solid var(--rule-deep)}
.footer-top{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:2rem;padding-block:clamp(2.75rem,6vw,4rem)}
@media (max-width:900px){.footer-top{grid-template-columns:1fr 1fr;gap:2.25rem 1.5rem}}
@media (max-width:560px){.footer-top{grid-template-columns:1fr}}
.footer-brand .brand-word b{color:var(--on-deep)}
.footer-brand .brand-word small{color:var(--on-deep-faint)}
.footer-brand p{margin-top:1.05rem;max-width:36ch;font-size:.845rem;line-height:1.62;color:var(--on-deep-faint)}
.footer-col h3{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.14em;color:var(--on-deep-faint);font-family:var(--font-body);margin-bottom:1rem}
.footer-col li+li{margin-top:.6rem}
.footer-col a{font-size:.865rem;color:var(--on-deep-dim);transition:color .16s var(--ease)}
.footer-col a:hover{color:var(--on-deep)}
.footer-bot{
  border-top:1px solid var(--rule-deep);padding-block:1.4rem;
  display:flex;flex-wrap:wrap;gap:.85rem 1.5rem;align-items:center;justify-content:space-between;
}
.footer-bot p{font-size:.775rem;color:var(--on-deep-faint)}
.footer-note{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.06em;text-transform:uppercase;color:var(--on-deep-faint)}

/* ---------- 24. Form ---------- */
.form{display:grid;gap:1.05rem}
.field{display:grid;gap:.42rem}
.field label{font-size:.795rem;font-weight:600;color:var(--ink);letter-spacing:.005em}
.field .hint{font-size:.755rem;color:var(--ink-faint);font-weight:400}
.field input,.field select,.field textarea{
  font:inherit;font-size:.925rem;color:var(--ink);background:var(--paper-card);
  border:1px solid var(--rule-strong);border-radius:var(--r);padding:.68rem .8rem;width:100%;
  transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.field textarea{min-height:140px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue-bright);box-shadow:0 0 0 3px var(--blue-soft)}
.field-2{display:grid;grid-template-columns:1fr 1fr;gap:1.05rem}
@media (max-width:600px){.field-2{grid-template-columns:1fr}}
.form-note{font-size:.775rem;color:var(--ink-faint);line-height:1.55}
.form-status{
  padding:.85rem 1rem;border-radius:var(--r);font-size:.86rem;
  border:1px solid rgba(28,110,76,.3);background:var(--verify-soft);color:var(--verify);
}
.form-status[hidden]{display:none}

/* ---------- 25. 404 ---------- */
.err{min-height:62vh;display:grid;place-content:center;text-align:center;padding-block:clamp(3rem,10vw,7rem)}
.err-code{font-family:var(--font-mono);font-size:clamp(3.5rem,13vw,7.5rem);font-weight:700;line-height:1;color:var(--seal-deep);letter-spacing:-.03em}

/* ---------- 26. Reveal ---------- */
.rv{opacity:0;transform:translateY(16px);transition:opacity .68s var(--ease),transform .68s var(--ease)}
.rv.in{opacity:1;transform:none}
html:not(.js) .rv{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1 !important;transform:none !important}}

/* ---------- 27. Utilities ---------- */
.mt-1{margin-top:.55rem}.mt-2{margin-top:1.05rem}.mt-3{margin-top:1.6rem}.mt-4{margin-top:2.15rem}.mt-5{margin-top:3rem}
.mb-2{margin-bottom:1.05rem}.mb-3{margin-bottom:1.6rem}.mb-4{margin-bottom:2.15rem}
.maxw{max-width:64ch}
.center{text-align:center}
.arw{display:inline-block}
.flow > * + *{margin-top:1.05rem}

@media print{
  .site-header,.site-footer,.cta-band,.nav-toggle{display:none}
  body{background:#fff;color:#000}
  .on-deep,.hero,.pagehead{background:#fff !important;color:#000 !important}
}