/* ============================================================
   1. TOKENS
   ============================================================ */
:root {
  --ink:        #0A0A0B;
  --ink-2:      #1A1A1D;
  --ink-3:      #2A2A2E;
  --paper:      #FFFFFF;
  --paper-2:    #F4F4F2;
  --paper-3:    #E8E8E4;
  --bone:       #FAFAF8;
  --line:       rgba(10,10,11,0.14);
  --line-soft:  rgba(10,10,11,0.08);
  --line-dark:  rgba(244,239,230,0.14);
  --muted:      rgba(10,10,11,0.58);
  --muted-dark: rgba(244,239,230,0.62);
  --blue:       #0655FF;
  --blue-2:     #0444CC;
  --blue-tint:  #DCE5FF;
  --blue-deep:  #03257A;
  --signal:     #B5FF3C;
  --rust:       #C2410C;
  --r-sm: 4px; --r: 8px; --r-lg: 14px; --r-xl: 22px;
  --container: 1320px;
  --gutter: 32px;
  --t1: cubic-bezier(.2,.7,.2,1);
  --t2: cubic-bezier(.7,0,.3,1);
}

/* ============================================================
   2. BASE / 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: 0.001ms !important; transition-duration: 0.001ms !important; animation-iteration-count: 1 !important; }
}
body {
  margin: 0;
  font-family: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-weight: 400; font-size: 17px; line-height: 1.5;
  color: var(--ink); background: var(--paper);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
::selection { background: var(--ink); color: var(--paper); }
.skip { position: absolute; left: -9999px; top: 8px; background: var(--ink); color: var(--paper); padding: 10px 14px; border-radius: var(--r); z-index: 9999; }
.skip:focus { left: 16px; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 3px; }

/* ============================================================
   3. TYPOGRAPHY
   ============================================================ */
.serif { font-family: "IBM Plex Serif", "Times New Roman", serif; font-weight: 400; font-style: italic; letter-spacing: -0.01em; }
.mono  { font-family: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace; }

.h-display {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 500;
  font-size: clamp(40px, 6.0vw, 84px);
  line-height: 0.98; letter-spacing: -0.035em;
  margin: 0; text-wrap: balance;
}
.h-display em { font-style: italic; font-family: "IBM Plex Serif", serif; font-weight: 400; letter-spacing: -0.02em; color: var(--blue); }

.h-section {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 500;
  font-size: clamp(34px, 4.4vw, 60px);
  line-height: 1.02; letter-spacing: -0.03em;
  margin: 0 0 24px; text-wrap: balance;
}
.h-section em { font-style: italic; font-family: "IBM Plex Serif", serif; font-weight: 400; }

.lede {
  font-size: clamp(18px, 1.4vw, 22px);
  line-height: 1.5; color: var(--ink);
  max-width: 820px; margin: 0 0 36px;
  text-wrap: pretty;
}
.dark .lede { color: var(--bone); }

p { margin: 0 0 16px; }
p.muted { color: var(--muted); }
.dark p.muted { color: var(--muted-dark); }

.eyebrow {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11.5px; letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  display: inline-flex; align-items: center; gap: 10px;
  margin: 0 0 22px;
}
.eyebrow .sq { width: 8px; height: 8px; background: var(--blue); flex-shrink: 0; }
.dark .eyebrow { color: var(--muted-dark); }

/* ============================================================
   4. LAYOUT PRIMITIVES
   ============================================================ */
.wrap { max-width: var(--container); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.section { padding: 120px 0; position: relative; }
.section-tight { padding: 80px 0; }
.section-head { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: end; margin-bottom: 56px; }
.section-head .lede { margin: 0; }
@media (max-width: 980px) { .section-head { grid-template-columns: 1fr; } }

.hr { height: 1px; background: var(--line); border: 0; margin: 0; }
.dark .hr { background: var(--line-dark); }
.dark { background: var(--ink); color: var(--bone); }
.dark a { color: var(--bone); }

/* ============================================================
   5. BUTTONS / CTAs
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  height: 48px; padding: 0 22px;
  border-radius: 999px;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 15px; font-weight: 500;
  letter-spacing: -0.005em; white-space: nowrap;
  transition: background .2s var(--t1), color .2s var(--t1), border-color .2s var(--t1);
  min-height: 44px;
}
.btn .arr { transition: transform .25s var(--t1); display: inline-block; }
.btn:hover .arr { transform: translateX(4px); }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-2); }
.btn-ink { background: var(--ink); color: var(--bone); }
.btn-ink:hover { background: var(--ink-2); }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--ink); }
.dark .btn-ghost { color: var(--bone); border-color: var(--line-dark); }
.dark .btn-ghost:hover { border-color: var(--bone); }
.btn-white { background: #fff; color: var(--blue); }
.btn-white:hover { background: var(--ink); color: #fff; }
.btn-text { display: inline-flex; align-items: center; gap: 8px; font-weight: 500; color: var(--ink); border-bottom: 1px solid transparent; padding-bottom: 2px; }
.btn-text:hover { border-color: var(--ink); }

/* ============================================================
   6. NAV
   ============================================================ */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.78);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-logo { height: 34px; width: auto; display: block; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  font-size: 14.5px; color: var(--ink); padding: 8px 12px; border-radius: 8px;
  display: inline-flex; align-items: center; gap: 6px;
  transition: background .15s var(--t1);
}
.nav-link:hover { background: rgba(10,10,11,0.06); }
.nav-link .caret { font-size: 10px; opacity: .5; }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-mono { font-family: "IBM Plex Mono", monospace; font-size: 11.5px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.nav-mono .pulse { width: 6px; height: 6px; border-radius: 50%; background: #16A34A; box-shadow: 0 0 0 0 rgba(22,163,74,.6); animation: pulse 2s infinite; }
@keyframes pulse { 0%{box-shadow: 0 0 0 0 rgba(22,163,74,.5);} 70%{box-shadow: 0 0 0 8px rgba(22,163,74,0);} 100%{box-shadow: 0 0 0 0 rgba(22,163,74,0);} }
.nav-burger { display: none; }
@media (max-width: 1080px) { .nav-links { display: none; } .nav-mono { display: none; } .nav-burger { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 8px; border: 1px solid var(--line); } }
@media (max-width: 540px) { .nav .btn-ink span:not(.arr) { display: none; } .nav .btn-ink::before { content: "Book"; } }

/* ============================================================
   7. BREADCRUMB
   ============================================================ */
.crumb {
  padding: 18px 0 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11.5px; letter-spacing: 0.04em;
  color: var(--muted);
  display: flex; align-items: center; gap: 8px;
}
.crumb a:hover { color: var(--ink); }
.crumb .sep { opacity: .35; }
.crumb .cur { color: var(--ink); }

/* ============================================================
   8. HERO §1
   ============================================================ */
.hero { padding: 56px 0 0; position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 56px; align-items: start; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 14px 6px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11.5px; letter-spacing: 0.04em;
  background: var(--bone);
  margin-bottom: 28px;
  text-transform: uppercase;
}
.hero-eyebrow .badge {
  background: var(--ink); color: var(--paper);
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px; letter-spacing: 0.06em;
  padding: 3px 8px; border-radius: 999px;
}
.hero h1 { margin: 0 0 28px; }
.hero-sub {
  font-size: clamp(17px, 1.25vw, 19.5px);
  line-height: 1.55; color: var(--ink);
  max-width: 640px; margin: 0 0 36px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* Proof metrics row */
.proof {
  margin-top: 72px; padding-top: 36px;
  border-top: 1px solid var(--line);
}
.proof-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
}
.proof-item {
  padding: 8px 22px 8px 0;
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 8px;
}
.proof-item:nth-child(6n) { border-right: 0; }
.proof-item:nth-child(n+4) { padding-top: 8px; }
.proof-v {
  font-family: "IBM Plex Serif", serif;
  font-style: italic; font-weight: 400;
  font-size: clamp(36px, 3.6vw, 52px);
  line-height: 1; letter-spacing: -0.015em;
  color: var(--ink);
  display: inline-flex; align-items: baseline; gap: 4px;
}
.proof-v .plus { color: var(--blue); font-size: 0.6em; }
.proof-v .lt { color: var(--blue); font-style: normal; font-family: "IBM Plex Sans", sans-serif; font-size: 0.55em; font-weight: 500; margin-right: 2px; transform: translateY(-2px); }
.proof-v .pct { color: var(--blue); font-size: 0.55em; font-family: "IBM Plex Sans", sans-serif; font-style: normal; font-weight: 500; margin-left: 2px; }
.proof-v.txt {
  font-family: "IBM Plex Sans", sans-serif;
  font-style: normal; font-weight: 500;
  font-size: clamp(18px, 1.5vw, 22px);
  letter-spacing: -0.015em;
  line-height: 1.15;
  align-items: flex-start;
  margin-top: 6px;
}
.proof-v.txt::before {
  content: ""; display: inline-block;
  width: 8px; height: 8px; background: var(--blue);
  margin-right: 10px; transform: translateY(2px);
  flex-shrink: 0;
}
.proof-l {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted);
  line-height: 1.4; max-width: 180px;
}
@media (max-width: 1200px) {
  .proof-grid { grid-template-columns: repeat(3, 1fr); row-gap: 32px; }
  .proof-item:nth-child(3n) { border-right: 0; }
  .proof-item:nth-child(3n+1) { padding-left: 0; }
}
@media (max-width: 640px) {
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
  .proof-item:nth-child(odd) { border-right: 1px solid var(--line); }
  .proof-item:nth-child(even) { border-right: 0; padding-left: 22px; }
}

/* RAG Pipeline status panel (signature moment) */
.rag-panel {
  position: relative;
  background: var(--ink); color: var(--bone);
  border-radius: var(--r-lg);
  padding: 24px;
  border: 1px solid var(--ink-3);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12.5px; overflow: hidden;
  box-shadow: 0 30px 60px -30px rgba(10,10,11,0.35), 0 2px 6px rgba(10,10,11,0.06);
  min-height: 480px;
}
.rag-panel::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(6,85,255,0.12), transparent 30%),
    radial-gradient(120% 60% at 100% 0%, rgba(6,85,255,0.18), transparent 50%);
}
.rp-head {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted-dark); position: relative;
}
.rp-head .dots { display: flex; gap: 6px; }
.rp-head .dots span { width: 7px; height: 7px; border-radius: 50%; background: var(--ink-3); }
.rp-head .dots span:nth-child(1) { background: #5C5C66; }
.rp-head .dots span:nth-child(2) { background: #3B3B42; }
.rp-title { color: var(--bone); margin-top: 14px; font-size: 13px; letter-spacing: 0.02em; position: relative; }
.rp-title .sig { color: var(--signal); margin-right: 8px; }
.rp-rule { height: 1px; background: var(--line-dark); margin: 16px 0 14px; position: relative; }
.rp-q { position: relative; padding: 10px 0 0; }
.rp-q .lbl { color: var(--muted-dark); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 4px; }
.rp-q .text { color: var(--bone); font-size: 13px; line-height: 1.4; font-family: "IBM Plex Mono", monospace; }
.rp-q .text .cursor { display: inline-block; width: 7px; height: 14px; background: var(--signal); margin-left: 3px; vertical-align: text-bottom; animation: blink 1.1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.rp-rows { position: relative; margin-top: 16px; display: flex; flex-direction: column; gap: 6px; }
.rp-row {
  display: grid; grid-template-columns: 56px 100px 1fr auto; align-items: center; gap: 10px;
  font-size: 11.5px;
  opacity: 0;
  animation: rp-in .35s var(--t1) forwards;
}
.rp-row .ts { color: var(--muted-dark); }
.rp-row .stage { color: var(--bone); letter-spacing: 0.08em; text-transform: uppercase; font-size: 10.5px; }
.rp-row .ev { color: rgba(244,239,230,0.78); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rp-row .val { color: var(--signal); font-weight: 500; font-size: 11px; }
.rp-row .val.blue { color: #7AA0FF; }
.rp-row .val.amber { color: #FFB089; }
.rp-row .val.pale { color: rgba(244,239,230,0.78); }
@keyframes rp-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

.rp-meter { position: relative; margin-top: 18px; border: 1px solid var(--line-dark); border-radius: 8px; padding: 12px; }
.rp-meter .lbl { display: flex; justify-content: space-between; font-size: 10px; color: var(--muted-dark); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 8px; }
.rp-meter .lbl b { color: var(--signal); font-weight: 500; }
.rp-meter .bars { display: grid; grid-template-columns: repeat(40, 1fr); gap: 2px; }
.rp-meter .bars i { display: block; height: 16px; background: var(--ink-3); border-radius: 1px; }
.rp-meter .bars i.on { background: var(--blue); }
.rp-meter .bars i.sig { background: var(--signal); }
.rp-foot { position: relative; margin-top: 14px; display: flex; justify-content: space-between; font-size: 10.5px; color: var(--muted-dark); letter-spacing: 0.04em; }
.rp-foot .ok { color: var(--signal); display: inline-flex; align-items: center; gap: 6px; }
.rp-foot .ok::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 0 rgba(181,255,60,.6); animation: pulse-sig 2s infinite; }
@keyframes pulse-sig { 0%{box-shadow: 0 0 0 0 rgba(181,255,60,.6);} 70%{box-shadow: 0 0 0 6px rgba(181,255,60,0);} 100%{box-shadow: 0 0 0 0 rgba(181,255,60,0);} }

@media (max-width: 1024px) { .hero-grid { grid-template-columns: 1fr; gap: 48px; } .rag-panel { min-height: 0; } }

/* ============================================================
   9. §2 — WHY RAG (long-form + InfoWorld pull-quote signature)
   ============================================================ */
.why-rag { background: var(--paper); }
.why-rag .wrap-r { max-width: 1100px; margin: 0 auto; }
.why-rag-grid { display: grid; grid-template-columns: 1fr; gap: 0; }
.why-rag p {
  font-size: clamp(17px, 1.18vw, 19px);
  line-height: 1.65; color: var(--ink);
  max-width: 820px;
  margin: 0 0 24px;
}
.why-rag p .stat {
  color: var(--blue); font-family: "IBM Plex Sans", sans-serif;
  font-weight: 500; letter-spacing: -0.01em;
}
.why-rag p a, .why-rag a.cite { border-bottom: 1px solid var(--line); padding-bottom: 1px; }
.why-rag p a:hover { border-color: var(--ink); }

.pull-quote {
  margin: 56px 0;
  padding: 56px 56px 48px;
  background: var(--ink);
  color: var(--bone);
  border-radius: var(--r-lg);
  position: relative;
  overflow: hidden;
}
.pull-quote::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(115deg, black, transparent 80%);
  -webkit-mask-image: linear-gradient(115deg, black, transparent 80%);
}
.pull-quote .pq-tag {
  position: relative;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted-dark);
  margin-bottom: 28px;
  display: flex; align-items: center; gap: 12px;
}
.pull-quote .pq-tag::before { content: ""; width: 24px; height: 1px; background: var(--signal); }
.pull-quote .pq-text {
  position: relative;
  font-family: "IBM Plex Serif", serif;
  font-style: italic; font-weight: 400;
  font-size: clamp(28px, 3.4vw, 46px);
  line-height: 1.18; letter-spacing: -0.02em;
  color: var(--bone);
  margin: 0 0 28px;
  text-wrap: balance;
  max-width: 980px;
}
.pull-quote .pq-text::before { content: "“"; color: var(--blue-tint); margin-right: 4px; }
.pull-quote .pq-text::after { content: "”"; color: var(--blue-tint); margin-left: 4px; }
.pull-quote .pq-cite {
  position: relative;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px; letter-spacing: 0.06em;
  color: var(--bone);
  display: flex; align-items: center; gap: 14px;
}
.pull-quote .pq-cite .src { background: var(--ink-2); border: 1px solid var(--ink-3); padding: 4px 10px; border-radius: 4px; }
.pull-quote .pq-cite .desc { color: var(--muted-dark); }

/* ============================================================
   10. §3 — RAG PATTERNS (dark band, editorial 01-05)
   ============================================================ */
.patterns { background: var(--ink); color: var(--bone); position: relative; overflow: hidden; }
.patterns::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, black, transparent 80%);
  -webkit-mask-image: linear-gradient(180deg, black, transparent 80%);
  opacity: 0.5;
}
.patterns .wrap { position: relative; }
.pat-intro { max-width: 820px; font-size: clamp(18px, 1.4vw, 22px); line-height: 1.55; color: var(--bone); margin: 0 0 64px; }

.pat-row {
  display: grid;
  grid-template-columns: 80px 1.1fr 1.8fr;
  gap: 32px;
  padding: 48px 0;
  border-top: 1px solid var(--line-dark);
  position: relative;
  align-items: start;
}
.pat-row:last-child { border-bottom: 1px solid var(--line-dark); }
.pat-num {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px; letter-spacing: 0.08em;
  color: var(--muted-dark);
  display: flex; flex-direction: column; gap: 6px;
  padding-top: 6px;
}
.pat-num .ix {
  font-family: "IBM Plex Serif", serif; font-style: italic;
  font-size: 44px; line-height: 1; color: var(--bone);
  letter-spacing: -0.015em; font-weight: 400;
}
.pat-num .tag { color: var(--blue-tint); }
.pat-head h3 {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 500;
  font-size: clamp(24px, 2.2vw, 32px);
  line-height: 1.1; letter-spacing: -0.02em;
  color: var(--bone); margin: 0 0 16px;
  text-wrap: balance;
}
.pat-head h3 em { font-style: italic; font-family: "IBM Plex Serif", serif; color: var(--blue-tint); }
.pat-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.pat-tag {
  display: inline-block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 10.5px; letter-spacing: 0.05em;
  padding: 4px 9px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line-dark);
  border-radius: 4px;
  color: var(--muted-dark);
}
.pat-body p {
  font-size: 15.5px; line-height: 1.65;
  color: rgba(244,239,230,0.86);
  margin: 0 0 14px;
}
.pat-body p:last-child { margin-bottom: 0; }
.pat-body p .em { color: var(--blue-tint); font-family: "IBM Plex Mono", monospace; font-size: 0.92em; }

@media (max-width: 900px) {
  .pat-row { grid-template-columns: 60px 1fr; row-gap: 16px; padding: 36px 0; }
  .pat-body { grid-column: 2; }
  .pat-num { padding-top: 0; }
  .pat-num .ix { font-size: 32px; }
}

/* ============================================================
   11. §4 — TECH STACK (12-row card matrix)
   ============================================================ */
.stack-h { background: var(--paper); }
.stack-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.stack-cell {
  background: var(--bone);
  padding: 28px 30px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  position: relative;
  transition: background .2s var(--t1);
}
.stack-cell:hover { background: #fff; }
.stack-cell .cat {
  display: flex; align-items: center; gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.stack-cell .cat .ix {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.08em;
  color: var(--muted);
  width: 32px;
}
.stack-cell .cat h3 {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 17px; font-weight: 500; letter-spacing: -0.012em;
  margin: 0;
}
.stack-items {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12.5px; line-height: 1.7;
  color: var(--muted);
  letter-spacing: -0.005em;
}
.stack-items b {
  color: var(--ink); font-weight: 500;
  background: var(--paper-2);
  padding: 1px 5px; border-radius: 3px;
  font-family: "IBM Plex Mono", monospace;
  white-space: nowrap;
}
.stack-cell::after {
  content: ""; position: absolute; right: 14px; bottom: 12px;
  width: 5px; height: 5px;
  border: 1px solid var(--line);
  border-left: 0; border-top: 0;
}
@media (max-width: 800px) { .stack-grid { grid-template-columns: 1fr; } }

/* ============================================================
   12. §5 — VECTOR DB COMPARISON (with market sizing moment)
   ============================================================ */
.vdb { background: var(--paper); }
.vdb-intro { max-width: 920px; margin: 0 0 48px; font-size: clamp(17px, 1.2vw, 19px); line-height: 1.6; color: var(--ink); }

.market {
  position: relative;
  margin: 0 0 56px;
  padding: 40px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 40px;
  align-items: center;
}
.market .lbl {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); line-height: 1.5;
  max-width: 160px;
}
.market .lbl b { color: var(--ink); font-weight: 500; display: block; margin-bottom: 4px; }
.market .v {
  font-family: "IBM Plex Serif", serif;
  font-style: italic; font-weight: 400;
  font-size: clamp(40px, 5vw, 76px);
  line-height: 0.98; letter-spacing: -0.025em;
  color: var(--ink);
  display: inline-flex; align-items: baseline; gap: 6px;
  white-space: nowrap;
}
.market .v.right { color: var(--blue); }
.market .v .yr {
  font-family: "IBM Plex Mono", monospace;
  font-style: normal;
  font-size: 11px; color: var(--muted);
  letter-spacing: 0.1em;
  margin-left: 8px;
}
.market .arrow {
  display: flex; align-items: center; justify-content: center;
  font-family: "IBM Plex Mono", monospace;
  color: var(--muted);
  position: relative;
  gap: 14px;
}
.market .arrow .rule {
  flex: 1; height: 1px; background: var(--ink);
  position: relative; min-width: 80px;
}
.market .arrow .rule::after {
  content: ""; position: absolute; right: -2px; top: 50%;
  width: 8px; height: 8px;
  border-top: 1px solid var(--ink); border-right: 1px solid var(--ink);
  transform: translateY(-50%) rotate(45deg);
}
.market .arrow .x {
  font-family: "IBM Plex Serif", serif; font-style: italic;
  font-size: 22px; color: var(--blue);
}
@media (max-width: 900px) {
  .market { grid-template-columns: 1fr; gap: 18px; padding: 32px 0; }
  .market .arrow { display: none; }
  .market .lbl { max-width: none; }
}

.vdb-table {
  display: grid;
  grid-template-columns: 0.9fr 1.3fr 1.3fr 1.3fr;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--paper);
}
.vdb-table .th, .vdb-table .td {
  padding: 22px 24px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-size: 14.5px; line-height: 1.55;
}
.vdb-table .th:last-child, .vdb-table .td:nth-child(4n) { border-right: 0; }
.vdb-table .th {
  background: var(--paper-2);
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted);
}
.vdb-row { display: contents; }
.vdb-table .name {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 19px; font-weight: 500;
  letter-spacing: -0.015em;
  display: flex; flex-direction: column; gap: 8px;
  align-items: flex-start;
}
.vdb-table .name .icon {
  width: 32px; height: 32px;
  background: var(--ink); color: var(--bone);
  border-radius: 6px;
  display: grid; place-items: center;
  margin-bottom: 4px;
  filter: invert(1) brightness(1.2);
}
.vdb-table .name .icon svg, .vdb-table .name .icon img { width: 18px; height: 18px; }
.vdb-row:last-child .th, .vdb-row:last-child .td { border-bottom: 0; }
.vdb-table .td.lim { color: var(--muted); }
.vdb-table .td.use { color: var(--ink); }
.vdb-table .td.use::before { content: ""; display: block; width: 6px; height: 6px; background: var(--blue); margin-bottom: 10px; }

.vdb-close {
  margin-top: 40px;
  padding: 24px 32px;
  background: var(--bone);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  font-size: 15.5px; line-height: 1.6;
  color: var(--ink);
  max-width: 100%;
  position: relative;
}
.vdb-close::before {
  content: "Editor's note —";
  display: block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 8px;
}
@media (max-width: 1000px) {
  .vdb-table { grid-template-columns: 1fr; border: 0; background: transparent; }
  .vdb-table .th { display: none; }
  .vdb-table .th-mobile { display: block; font-family: "IBM Plex Mono", monospace; font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
  .vdb-table .td { border-right: 0; padding: 18px 24px; }
  .vdb-table .td:nth-child(4n) { border-right: 0; }
  .vdb-row { display: block; background: var(--bone); border: 1px solid var(--line); border-radius: var(--r-lg); margin-bottom: 16px; overflow: hidden; }
  .vdb-table .name { background: var(--paper); }
}

/* ============================================================
   13. §6 — INDUSTRIES (dark band, 4 blocks)
   ============================================================ */
.industries { background: var(--ink); color: var(--bone); position: relative; overflow: hidden; }
.industries::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, black, transparent 75%);
  -webkit-mask-image: linear-gradient(180deg, black, transparent 75%);
  opacity: 0.5;
}
.industries .wrap { position: relative; }
.ind-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.ind-card {
  background: var(--ink-2);
  padding: 40px 36px;
  display: flex; flex-direction: column;
  gap: 16px; position: relative;
  min-height: 380px;
  transition: background .2s var(--t1);
}
.ind-card:hover { background: #20202550; }
.ind-card .ix {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.08em;
  color: var(--blue-tint);
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 6px;
}
.ind-card .ix::before { content: ""; width: 6px; height: 6px; background: var(--blue); }
.ind-card h3 {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: clamp(22px, 1.9vw, 28px); font-weight: 500;
  letter-spacing: -0.02em; line-height: 1.15;
  margin: 0 0 8px; color: var(--bone);
  text-wrap: balance;
}
.ind-card p {
  font-size: 15px; line-height: 1.65;
  color: rgba(244,239,230,0.82); margin: 0;
  max-width: 64ch;
}
.ind-card::after {
  content: ""; position: absolute; right: 18px; bottom: 16px;
  width: 6px; height: 6px;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}
@media (max-width: 900px) { .ind-grid { grid-template-columns: 1fr; } .ind-card { min-height: 0; } }

/* ============================================================
   14. MID-CTA — atmospheric blue strip
   ============================================================ */
.mid-cta {
  position: relative;
  padding: 88px 0;
  background:
    radial-gradient(80% 120% at 95% 0%, rgba(255,255,255,0.22), transparent 55%),
    radial-gradient(70% 100% at 0% 100%, rgba(2,30,120,0.45), transparent 60%),
    linear-gradient(115deg, #0858FF 0%, #0A48E0 55%, #0334B8 100%);
  color: #fff; overflow: hidden;
}
.mid-cta::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.07) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 30% 50%, black, transparent 85%);
  -webkit-mask-image: radial-gradient(circle at 30% 50%, black, transparent 85%);
}
.mid-cta::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(8px 8px at 14% 30%, rgba(255,255,255,0.5), transparent 70%),
    radial-gradient(6px 6px at 86% 70%, rgba(181,255,60,0.7), transparent 70%);
}
.mid-cta-row { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 32px; flex-wrap: wrap; z-index: 1; }
.mid-cta-text {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 500;
  font-size: clamp(24px, 2.6vw, 38px);
  line-height: 1.1; letter-spacing: -0.025em;
  max-width: 820px; margin: 0; color: #fff;
}
.mid-cta-text em { font-style: italic; font-family: "IBM Plex Serif", serif; font-weight: 400; }

/* ============================================================
   15. §7 — CASE STUDIES (3-col bento, tall left)
   ============================================================ */
.cases { background: var(--paper); }
.case-grid {
  display: grid;
  grid-template-columns: 1.45fr 1fr 1fr;
  grid-auto-rows: minmax(280px, auto);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.case {
  background: var(--bone);
  padding: 30px 32px;
  display: flex; flex-direction: column; gap: 16px;
  position: relative;
  transition: background .2s var(--t1);
}
.case:hover { background: #fff; }
.case.featured {
  grid-row: span 2;
  background: var(--ink);
  color: var(--bone);
  padding: 40px 36px;
}
.case.featured:hover { background: var(--ink-2); }
.case-tag {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted);
  display: flex; align-items: center; gap: 10px;
}
.case-tag .sq { width: 8px; height: 8px; background: var(--blue); }
.case.featured .case-tag { color: var(--muted-dark); }
.case.featured .case-tag .sq { background: var(--signal); }
.case h3 {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 500;
  font-size: clamp(20px, 1.8vw, 26px);
  line-height: 1.18; letter-spacing: -0.018em;
  margin: 0; text-wrap: balance;
}
.case.featured h3 { font-size: clamp(26px, 2.2vw, 34px); }
.case-metric {
  font-family: "IBM Plex Serif", serif;
  font-style: italic; font-weight: 400;
  font-size: clamp(40px, 4vw, 60px);
  line-height: 0.98; letter-spacing: -0.025em;
  color: var(--blue);
  margin: 0;
}
.case.featured .case-metric { color: var(--signal); }
.case-desc {
  font-size: 14.5px; line-height: 1.6; color: var(--muted);
  max-width: 56ch;
}
.case.featured .case-desc { color: rgba(244,239,230,0.82); font-size: 15px; max-width: 60ch; }
.case-stack {
  display: flex; flex-wrap: wrap; gap: 5px 6px;
  margin-top: auto;
}
.case-stack .chip {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10.5px; letter-spacing: 0.02em;
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--ink);
  background: #fff;
}
.case.featured .case-stack .chip {
  background: var(--ink-2); border-color: var(--line-dark); color: rgba(244,239,230,0.86);
}
.case-foot {
  margin-top: 6px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center;
  font-family: "IBM Plex Mono", monospace; font-size: 11px;
  letter-spacing: 0.04em; color: var(--muted);
}
.case.featured .case-foot { border-top-color: var(--line-dark); color: var(--muted-dark); }
.case-foot .builtwith { text-transform: uppercase; letter-spacing: 0.1em; font-size: 10px; }
@media (max-width: 1024px) {
  .case-grid { grid-template-columns: 1fr 1fr; }
  .case.featured { grid-row: auto; grid-column: span 2; }
}
@media (max-width: 640px) {
  .case-grid { grid-template-columns: 1fr; }
  .case.featured { grid-column: auto; }
}

/* ============================================================
   16. §8 — METHODOLOGY (dark, timeline)
   ============================================================ */
.method { background: var(--ink); color: var(--bone); position: relative; overflow: hidden; }
.method::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, black, transparent 75%);
  -webkit-mask-image: linear-gradient(180deg, black, transparent 75%);
  opacity: 0.5;
}
.method .wrap { position: relative; }
.timeline { position: relative; padding-left: 36px; margin-top: 48px; }
.timeline::before {
  content: ""; position: absolute; left: 6px; top: 12px; bottom: 12px;
  width: 1px; background: var(--line-dark);
}
.tl-step {
  position: relative;
  padding: 0 0 56px 24px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  align-items: start;
}
.tl-step:last-child { padding-bottom: 0; }
.tl-step::before {
  content: ""; position: absolute; left: -36px; top: 8px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 4px var(--ink), 0 0 0 5px var(--line-dark);
}
.tl-step.final::before { background: var(--signal); }
.tl-head .when {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--blue-tint);
  margin-bottom: 10px;
}
.tl-head h3 {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 500;
  font-size: clamp(22px, 1.9vw, 28px);
  line-height: 1.15; letter-spacing: -0.018em;
  margin: 0; color: var(--bone);
  text-wrap: balance;
}
.tl-body { font-size: 15.5px; line-height: 1.65; color: rgba(244,239,230,0.82); margin: 0; max-width: 720px; }
.tl-body strong { color: var(--bone); font-weight: 500; }
@media (max-width: 900px) {
  .tl-step { grid-template-columns: 1fr; gap: 12px; padding-left: 12px; padding-bottom: 40px; }
}

/* ============================================================
   17. §9 — WHY BN DIFFERENTIATORS (12-col asymmetric)
   ============================================================ */
.why-bn { background: var(--paper); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}
.why-card {
  background: var(--bone);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 32px 32px 30px;
  position: relative;
  display: flex; flex-direction: column;
  transition: background .2s var(--t1);
}
.why-card:hover { background: #fff; }
.why-card .num {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 18px;
  display: flex; justify-content: space-between; align-items: center;
}
.why-card .num .pill {
  background: var(--blue); color: #fff;
  padding: 3px 9px; border-radius: 999px;
  font-size: 9.5px; letter-spacing: 0.08em;
  text-transform: uppercase;
}
.why-card h3 {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 500;
  font-size: clamp(22px, 1.8vw, 28px);
  letter-spacing: -0.02em; line-height: 1.15;
  margin: 0 0 16px; text-wrap: balance;
}
.why-card h3 em { font-style: italic; font-family: "IBM Plex Serif", serif; font-weight: 400; color: var(--blue); }
.why-card p { font-size: 14.5px; line-height: 1.65; color: var(--muted); margin: 0 0 12px; max-width: 60ch; }
.why-card p:last-child { margin: 0; }
.why-card.feat { background: var(--ink); color: var(--bone); border-color: var(--ink-3); }
.why-card.feat:hover { background: var(--ink-2); }
.why-card.feat .num { color: var(--muted-dark); }
.why-card.feat h3 em { color: var(--blue-tint); }
.why-card.feat p { color: rgba(244,239,230,0.82); }
.why-card.feat a { border-bottom: 1px solid var(--line-dark); padding-bottom: 1px; color: var(--blue-tint); }
.why-card.feat a:hover { border-color: var(--bone); color: var(--bone); }
.why-card .cred-strip {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
  display: flex; flex-wrap: wrap; gap: 8px;
}
.why-card .cred-strip .pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 11px; border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--line-dark);
  font-family: "IBM Plex Mono", monospace;
  font-size: 10.5px; letter-spacing: 0.04em;
  color: var(--bone);
}
.why-card .cred-strip .pill .dot { width: 6px; height: 6px; border-radius: 50%; }
.why-card .cred-strip .pill .dot.nv { background: #76B900; }
.why-card .cred-strip .pill .dot.aws { background: #FF9900; }
.why-card .cred-strip .pill .dot.ms { background: #50E6FF; }
.why-card .cred-strip .pill .dot.iso { background: #fff; }
.why-card .cred-strip .pill .dot.upwork { background: #14A800; }

.span-12 { grid-column: span 12; }
.span-8  { grid-column: span 8; }
.span-7  { grid-column: span 7; }
.span-6  { grid-column: span 6; }
.span-5  { grid-column: span 5; }
.span-4  { grid-column: span 4; }
@media (max-width: 980px) { .span-8, .span-7, .span-6, .span-5, .span-4 { grid-column: span 12; } }

/* ============================================================
   18. §10 — COMPARISON (DIY vs Platform vs BN)
   ============================================================ */
.compare { background: var(--paper); }
.compare-table {
  display: grid;
  grid-template-columns: 0.85fr 1fr 1fr 1.1fr;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  position: relative;
}
.compare-table::before {
  /* highlight BN column */
  content: ""; position: absolute;
  left: calc((0.85 / 3.95) * 100% + (2 / 3.95) * 100%);
  width: calc((1.1 / 3.95) * 100%);
  top: 0; bottom: 0;
  background: linear-gradient(180deg, rgba(6,85,255,0.04), rgba(6,85,255,0.08));
  border-left: 1px solid rgba(6,85,255,0.2);
  border-right: 1px solid rgba(6,85,255,0.2);
  pointer-events: none;
}
.cmp-cell {
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-size: 14.5px; line-height: 1.55;
  position: relative;
  background: var(--paper);
}
.cmp-cell:nth-child(4n) { border-right: 0; }
.cmp-row:last-child .cmp-cell { border-bottom: 0; }
.cmp-cell.head {
  background: var(--paper-2);
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted);
  padding: 18px 22px;
}
.cmp-cell.head.bn {
  background: var(--ink); color: var(--bone);
  border-color: var(--ink-3);
}
.cmp-cell.head.bn::before {
  content: ""; display: inline-block;
  width: 6px; height: 6px; background: var(--signal);
  margin-right: 8px; vertical-align: middle;
}
.cmp-cell.factor {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 500; letter-spacing: -0.01em;
  font-size: 14.5px; color: var(--ink);
  background: var(--bone);
}
.cmp-cell.muted { color: var(--muted); }
.cmp-cell.bn {
  background: rgba(6,85,255,0.04);
  font-weight: 500; color: var(--ink);
}
.compare-table .cmp-row { display: contents; }
@media (max-width: 1000px) {
  .compare-table { display: block; border: 0; background: transparent; }
  .compare-table::before { display: none; }
  .cmp-row { display: block; margin-bottom: 16px; border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; }
  .cmp-row.head-row { display: none; }
  .cmp-cell { border-right: 0; padding: 14px 20px; }
  .cmp-cell.factor { background: var(--ink); color: var(--bone); padding: 16px 20px; font-size: 15px; }
  .cmp-cell:not(.factor)::before {
    display: block;
    font-family: "IBM Plex Mono", monospace;
    font-size: 10px; letter-spacing: 0.08em;
    text-transform: uppercase; color: var(--muted);
    margin-bottom: 4px;
  }
  .cmp-cell.col-diy::before { content: "DIY RAG (Internal Team + LangChain)"; }
  .cmp-cell.col-plat::before { content: "RAG Platform (Managed SaaS)"; }
  .cmp-cell.col-bn::before { content: "Brainy Neurals (Custom Enterprise RAG)"; color: var(--blue); }
}

/* ============================================================
   19. §11 — FAQ accordion
   ============================================================ */
.faq { background: var(--paper); }
.faq-wrap { display: grid; grid-template-columns: 1fr 1.4fr; gap: 56px; align-items: start; }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%;
  display: grid;
  grid-template-columns: 40px 1fr 32px;
  gap: 16px;
  align-items: start;
  padding: 24px 0;
  text-align: left;
  font: inherit; color: inherit;
  cursor: pointer;
}
.faq-q .qi { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--muted); padding-top: 4px; }
.faq-q .qt {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 18px; font-weight: 500;
  letter-spacing: -0.012em; line-height: 1.35;
  padding-top: 0;
}
.faq-q .ic {
  position: relative;
  width: 28px; height: 28px; border-radius: 50%;
  border: 1px solid var(--line);
  display: grid; place-items: center;
  align-self: start;
  transition: background .2s var(--t1);
}
.faq-q .ic::before, .faq-q .ic::after {
  content: ""; position: absolute;
  background: var(--ink);
  transition: transform .3s var(--t1), background .2s var(--t1);
}
.faq-q .ic::before { width: 10px; height: 1.5px; }
.faq-q .ic::after { width: 1.5px; height: 10px; }
.faq-item[aria-expanded="true"] .faq-q .ic { background: var(--ink); }
.faq-item[aria-expanded="true"] .faq-q .ic::before, .faq-item[aria-expanded="true"] .faq-q .ic::after { background: var(--bone); }
.faq-item[aria-expanded="true"] .faq-q .ic::after { transform: scaleY(0); }
.faq-a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .35s var(--t1); }
.faq-a > div { overflow: hidden; }
.faq-item[aria-expanded="true"] .faq-a { grid-template-rows: 1fr; }
.faq-a .inner { padding: 0 0 28px 56px; font-size: 15.5px; line-height: 1.65; color: var(--muted); max-width: 720px; }
.faq-aside {
  background: var(--bone);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 32px;
  position: sticky; top: 96px;
}
.faq-aside .ix {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted);
  margin-bottom: 14px;
  display: flex; align-items: center; gap: 10px;
}
.faq-aside .ix::before { content: ""; width: 6px; height: 6px; background: var(--blue); }
.faq-aside h3 {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 500; font-size: 22px;
  letter-spacing: -0.018em; line-height: 1.25;
  margin: 0 0 12px;
}
.faq-aside h3 em { font-style: italic; font-family: "IBM Plex Serif", serif; color: var(--blue); font-weight: 400; }
.faq-aside p { font-size: 14.5px; color: var(--muted); margin: 0 0 18px; }
@media (max-width: 900px) {
  .faq-wrap { grid-template-columns: 1fr; }
  .faq-aside { position: static; }
}

/* ============================================================
   20. §12 — RELATED SERVICES
   ============================================================ */
.related { background: var(--paper); }
.related-list {
  border-top: 1px solid var(--line);
}
.rel-row {
  display: grid;
  grid-template-columns: 60px 1.3fr 2fr 100px;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
  position: relative;
  transition: background .2s var(--t1);
}
.rel-row::before {
  content: ""; position: absolute; inset: 0;
  background: var(--bone); opacity: 0;
  transition: opacity .2s var(--t1);
  z-index: -1; border-radius: 8px;
  margin: -4px -16px;
}
.rel-row:hover::before { opacity: 1; }
.rel-num {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px; letter-spacing: 0.04em;
  color: var(--muted);
}
.rel-name {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 18px; font-weight: 500;
  letter-spacing: -0.015em;
}
.rel-name a { display: inline-block; }
.rel-name a:hover { color: var(--blue); }
.rel-desc { font-size: 14.5px; line-height: 1.55; color: var(--muted); }
.rel-arrow {
  justify-self: end;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px; letter-spacing: 0.04em;
}
.rel-arrow a { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); }
.rel-arrow a:hover { color: var(--blue); }
.rel-arrow .arr { transition: transform .25s var(--t1); }
.rel-row:hover .rel-arrow .arr { transform: translateX(4px); }
@media (max-width: 800px) {
  .rel-row { grid-template-columns: 40px 1fr; row-gap: 8px; }
  .rel-desc, .rel-arrow { grid-column: 2; }
  .rel-arrow { justify-self: start; }
}

/* ============================================================
   21. §13 — FINAL CTA (atmospheric blue hook)
   ============================================================ */
.final-cta {
  position: relative;
  padding: 140px 0 120px;
  text-align: center;
  color: #fff;
  background:
    radial-gradient(50% 70% at 50% 30%, rgba(122,160,255,0.42), transparent 70%),
    radial-gradient(80% 60% at 100% 100%, rgba(2,20,90,0.55), transparent 65%),
    radial-gradient(80% 60% at 0% 100%, rgba(2,20,90,0.55), transparent 65%),
    linear-gradient(180deg, #0A5CFF 0%, #0633B5 70%, #021E78 100%);
  overflow: hidden;
}
.final-cta::before {
  content: ""; position: absolute; inset: -2px; pointer-events: none;
  background-image:
    radial-gradient(circle at center, rgba(255,255,255,0.18) 1px, transparent 1.4px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at 50% 50%, black, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, black, transparent 70%);
  opacity: 0.6;
}
.final-cta::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    repeating-radial-gradient(circle at 50% 50%, transparent 0 80px, rgba(255,255,255,0.04) 80px 81px);
  mask-image: radial-gradient(circle at 50% 50%, transparent 5%, black 25%, transparent 85%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, transparent 5%, black 25%, transparent 85%);
}
.final-cta .wrap { position: relative; z-index: 1; }
.final-cta .eyebrow {
  color: rgba(255,255,255,0.7);
  justify-content: center;
}
.final-cta h2 {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 500;
  font-size: clamp(36px, 4.6vw, 64px);
  line-height: 1.02; letter-spacing: -0.03em;
  margin: 0 auto 24px;
  max-width: 22ch;
  color: #fff;
  text-wrap: balance;
}
.final-cta h2 em { font-style: italic; font-family: "IBM Plex Serif", serif; font-weight: 400; color: rgba(255,255,255,0.82); }
.final-cta .subtext {
  font-size: clamp(16px, 1.2vw, 19px);
  line-height: 1.55;
  color: rgba(255,255,255,0.86);
  max-width: 62ch;
  margin: 0 auto 36px;
}
.final-cta .cta-row { display: inline-flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.final-cta .sec-row {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.18);
  display: flex; justify-content: center; align-items: center;
  gap: 22px; flex-wrap: wrap;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12.5px; letter-spacing: 0.04em;
  color: rgba(255,255,255,0.72);
}
.final-cta .sec-row a { color: rgba(255,255,255,0.92); border-bottom: 1px solid rgba(255,255,255,0.32); padding-bottom: 1px; }
.final-cta .sec-row a:hover { color: #fff; border-color: #fff; }
.final-cta .sec-row .sep { width: 4px; height: 4px; border-radius: 50%; background: rgba(255,255,255,0.32); }

/* ============================================================
   22. FOOTER
   ============================================================ */
.footer { background: var(--ink); color: var(--bone); padding: 96px 0 36px; }
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--line-dark);
}
.footer-brand .brand-logo { height: 50px; filter: brightness(0) invert(1); opacity: .95; }
.footer-brand .desc {
  margin-top: 22px; max-width: 380px;
  font-size: 14.5px; line-height: 1.6;
  color: rgba(244,239,230,0.72);
}
.footer-col h4 {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(244,239,230,0.55);
  margin: 0 0 18px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
  font-size: 14.5px; color: rgba(244,239,230,0.86);
  transition: color .15s var(--t1);
}
.footer-col a:hover { color: #fff; }
.footer-stack { display: flex; flex-direction: column; gap: 32px; }
.footer-bot {
  padding-top: 28px;
  display: flex; justify-content: space-between; align-items: center;
  gap: 24px; flex-wrap: wrap;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px; color: rgba(244,239,230,0.55);
}
.social-row { display: flex; gap: 10px; }
.social-row a {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--line-dark);
  display: grid; place-items: center;
  transition: border-color .2s var(--t1), background .2s var(--t1);
}
.social-row a:hover { border-color: rgba(244,239,230,0.4); background: rgba(255,255,255,0.04); }
.social-row img { width: 16px; height: 16px; filter: brightness(0) invert(1); opacity: 0.85; }
.legal { display: flex; gap: 22px; }
.legal a:hover { color: #fff; }
@media (max-width: 1000px) { .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 640px) { .footer-top { grid-template-columns: 1fr; } .footer-bot { flex-direction: column; align-items: flex-start; } }

/* ============================================================
   23. STICKY CTA (bottom-center after hero)
   ============================================================ */
.sticky-cta {
  position: fixed;
  left: 50%; bottom: 24px;
  transform: translateX(-50%) translateY(120%);
  display: inline-flex; align-items: center; gap: 12px;
  padding: 8px 8px 8px 18px;
  background: var(--ink); color: var(--bone);
  border-radius: 999px;
  z-index: 40;
  border: 1px solid var(--ink-3);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 14px;
  transition: transform .35s var(--t1);
  box-shadow: 0 20px 50px -20px rgba(10,10,11,0.55);
}
.sticky-cta.visible { transform: translateX(-50%) translateY(0); }
.sticky-cta .live { display: inline-flex; align-items: center; gap: 8px; font-family: "IBM Plex Mono", monospace; font-size: 11px; color: rgba(244,239,230,0.7); letter-spacing: 0.06em; text-transform: uppercase; }
.sticky-cta .live .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 0 rgba(181,255,60,.5); animation: pulse-sig 2s infinite; }
.sticky-cta .div { width: 1px; height: 18px; background: var(--line-dark); }
.sticky-cta .btn { height: 38px; padding: 0 18px; background: var(--blue); color: #fff; font-size: 13.5px; }
.sticky-cta .btn:hover { background: var(--blue-2); }
@media (max-width: 640px) { .sticky-cta { left: 16px; right: 16px; transform: translateY(120%); width: auto; justify-content: space-between; } .sticky-cta.visible { transform: translateY(0); } .sticky-cta .live span:last-child { display: none; } }

/* ============================================================
   24. MOTION — fade-up on entry
   ============================================================ */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s var(--t1), transform .6s var(--t1); }
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ============================================================
   25. UTILITIES
   ============================================================ */
.center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mt-24 { margin-top: 24px; }
.muted-link { color: var(--muted); border-bottom: 1px solid var(--line); padding-bottom: 1px; }
.muted-link:hover { color: var(--ink); }