/* ============================================================
   site.css — First Intelligence Utility public landing page
   ------------------------------------------------------------
   Every colour and primary type choice resolves to tokens.css,
   preserving continuity with the supplied partner platform.
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: rgba(118, 185, 0, .35); }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: none; }

h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.1; }
h1 { font-size: clamp(48px, 7.2vw, 108px); letter-spacing: -.055em; font-weight: 650; }
h2 { font-size: clamp(34px, 4.6vw, 66px); letter-spacing: -.04em; font-weight: 620; }
h3 { font-size: 23px; letter-spacing: -.02em; }

.wrap {
  width: min(100% - 56px, var(--maxw));
  margin: 0 auto;
}

/* ---- Sticky navigation: same proportions and treatment as source ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 58px;
  background: rgba(7, 9, 13, .92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  width: min(100% - 56px, var(--maxw));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.nav .brand {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.dot { color: var(--green); }
.nav .brand .dot { margin-left: 6px; font-size: 9px; vertical-align: 1px; }

.nav-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid var(--border-hi);
  border-radius: var(--rad-sm);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  transition: color 180ms cubic-bezier(.23, 1, .32, 1), border-color 180ms cubic-bezier(.23, 1, .32, 1), background 180ms cubic-bezier(.23, 1, .32, 1), transform 160ms cubic-bezier(.23, 1, .32, 1);
}

.nav-links a:hover { color: var(--text); border-color: var(--green-dim); background: var(--panel); }
.nav-links a:active { transform: scale(.97); }

/* ---- Hero ---- */
.hero-section {
  position: relative;
  min-height: calc(100svh - 58px);
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(30, 39, 51, .10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 39, 51, .10) 1px, transparent 1px),
    radial-gradient(ellipse 62% 88% at 6% 2%, color-mix(in srgb, var(--green) 9%, transparent), transparent 62%),
    radial-gradient(ellipse 56% 68% at 88% 88%, color-mix(in srgb, var(--cyan) 6%, transparent), transparent 66%);
  background-size: 72px 72px, 72px 72px, auto, auto;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 78%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 78%, transparent 100%);
}

.hero-wrap {
  position: relative;
  min-height: calc(100svh - 58px);
  display: flex;
  align-items: center;
  padding-top: clamp(96px, 12vh, 160px);
  padding-bottom: clamp(96px, 12vh, 160px);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1240px;
}
.hero-kicker,
.section-kicker {
  display: block;
  margin: 0 0 20px;
  color: var(--green);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.hero-content h1 {
  max-width: 1180px;
  margin-bottom: 36px;
  font-size: clamp(72px, 8.2vw, 132px);
  line-height: .92;
  letter-spacing: -.055em;
}
.hero-lede {
  max-width: 900px;
  margin-bottom: 38px;
  color: var(--muted);
  font-size: clamp(19px, 1.65vw, 25px);
  line-height: 1.52;
}

.hero-signals {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-signals span {
  padding: 8px 11px;
  border: 1px solid var(--border);
  border-radius: var(--rad-sm);
  background: color-mix(in srgb, var(--panel) 68%, transparent);
  color: var(--faint);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .13em;
  text-transform: uppercase;
}

/* ---- Semantic infrastructure topology ---- */
.topology-container {
  position: relative;
  width: min(100%, 620px);
  aspect-ratio: 1;
  justify-self: end;
  border: 1px solid var(--border);
  border-radius: 50%;
  background:
    radial-gradient(circle at center, color-mix(in srgb, var(--green) 6%, transparent), transparent 34%),
    repeating-radial-gradient(circle at center, transparent 0 69px, rgba(44, 57, 71, .22) 70px 71px);
  box-shadow: inset 0 0 110px rgba(7, 9, 13, .82), 0 0 90px rgba(7, 9, 13, .6);
}

.topology-container::before,
.topology-container::after {
  content: "";
  position: absolute;
  inset: 8%;
  border: 1px dashed color-mix(in srgb, var(--border-hi) 64%, transparent);
  border-radius: 50%;
  animation: orbit 42s linear infinite;
}

.topology-container::after {
  inset: 22%;
  border-style: solid;
  border-color: color-mix(in srgb, var(--border-hi) 50%, transparent);
  animation-direction: reverse;
  animation-duration: 34s;
}

.topology-core {
  position: absolute;
  left: 54%;
  top: 50%;
  width: 132px;
  height: 132px;
  transform: translate(-50%, -50%);
  display: grid;
  place-items: center;
  z-index: 3;
}

.core-ring {
  position: absolute;
  border: 1px solid color-mix(in srgb, var(--green) 60%, transparent);
  border-radius: 50%;
}
.ring-a { inset: 24px; animation: core-pulse 3.4s cubic-bezier(.23, 1, .32, 1) infinite; }
.ring-b { inset: 3px; opacity: .3; animation: core-pulse 3.4s 1.2s cubic-bezier(.23, 1, .32, 1) infinite; }
.core-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px var(--green), 0 0 36px color-mix(in srgb, var(--green) 48%, transparent);
}
.core-label {
  position: absolute;
  top: calc(50% + 20px);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.topology-node {
  position: absolute;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 9px;
  border: 1px solid var(--border);
  border-radius: var(--rad-sm);
  background: rgba(12, 16, 22, .80);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.node-site { left: 11%; top: 18%; }
.node-power { left: 73%; top: 13%; }
.node-capital { left: 9%; top: 67%; }
.node-delivery { left: 72%; top: 65%; }
.node-operations { left: 76%; top: 37%; }

.node-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  box-shadow: 0 0 12px currentColor;
}
.n-green { color: var(--green); background: var(--green); }
.n-cyan { color: var(--cyan); background: var(--cyan); }
.n-amber { color: var(--amber); background: var(--amber); }
.n-teal { color: var(--teal); background: var(--teal); }
.n-violet { color: var(--violet); background: var(--violet); }

.topology-label {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.edge {
  position: absolute;
  left: 54%;
  top: 50%;
  height: 1px;
  transform-origin: left center;
  background: linear-gradient(90deg, color-mix(in srgb, var(--green) 45%, transparent), var(--border-hi), transparent);
  z-index: 1;
}
.edge-site { width: 245px; transform: rotate(-144deg); }
.edge-power { width: 225px; transform: rotate(-53deg); }
.edge-capital { width: 238px; transform: rotate(149deg); }
.edge-delivery { width: 184px; transform: rotate(38deg); }
.edge-operations { width: 170px; transform: rotate(-16deg); }

.packet {
  position: absolute;
  left: 0;
  top: -1px;
  width: 5px;
  height: 3px;
  border-radius: 2px;
  background: var(--text);
  box-shadow: 0 0 9px var(--text);
  opacity: 0;
  animation: travel 3.4s linear infinite;
}
.delay-1 { animation-delay: .65s; }
.delay-2 { animation-delay: 1.3s; }
.delay-3 { animation-delay: 1.95s; }
.delay-4 { animation-delay: 2.6s; }

.topology-status {
  position: absolute;
  left: 50%;
  bottom: 8%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .12em;
  text-transform: uppercase;
  white-space: nowrap;
}
.status-light {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: status 2s ease-in-out infinite;
}

/* ---- Shared sections ---- */
.section-pad { padding: clamp(94px, 11vw, 170px) 0; }
.model-section { background: var(--bg-raise); border-bottom: 1px solid var(--border); }
.section-heading { max-width: 980px; margin-bottom: clamp(54px, 7vw, 96px); }
.section-heading h2 { margin-bottom: 24px; }
.section-heading > p:last-child {
  max-width: 700px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

/* ---- Four canonical services as an editorial production line ---- */
.service-line {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border-hi);
  border-bottom: 1px solid var(--border-hi);
}

.service-step {
  position: relative;
  min-height: 350px;
  padding: 27px 27px 34px;
  border-right: 1px solid var(--border);
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel) 50%, transparent), transparent 78%);
  transition: background 240ms cubic-bezier(.23, 1, .32, 1), transform 240ms cubic-bezier(.23, 1, .32, 1);
}
.service-step:last-child { border-right: 0; }
.service-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: -2px;
  width: 100%;
  height: 2px;
  background: var(--step-accent);
  transform: scaleX(.16);
  transform-origin: left;
  transition: transform 420ms cubic-bezier(.23, 1, .32, 1);
}
.service-step:hover { background: color-mix(in srgb, var(--panel) 78%, transparent); transform: translateY(-4px); }
.service-step:hover::before { transform: scaleX(1); }
.step-originate { --step-accent: var(--green); }
.step-deliver { --step-accent: var(--cyan); }
.step-renew { --step-accent: var(--teal); }

.step-index {
  margin-bottom: 76px;
  color: var(--step-accent);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
}
.step-copy h3 { margin-bottom: 18px; }
.step-copy p { margin-bottom: 0; color: var(--muted); }

/* ---- Campus proposition ---- */
.campus-section {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 42% 68% at 6% 82%, color-mix(in srgb, var(--amber) 5%, transparent), transparent 68%),
    var(--bg);
}

.campus-grid {
  display: grid;
  grid-template-columns: .78fr 1.22fr;
  gap: clamp(58px, 9vw, 160px);
  align-items: start;
}
.section-kicker.amber { color: var(--amber); }
.campus-copy h2 { margin-bottom: 0; }

.campus-panel {
  border: 1px solid var(--border);
  border-top: 2px solid var(--amber);
  border-radius: var(--rad);
  background:
    radial-gradient(ellipse 70% 80% at 100% 0%, color-mix(in srgb, var(--amber) 6%, transparent), transparent 62%),
    var(--panel);
  overflow: hidden;
}

.campus-statement {
  margin: 0;
  padding: 34px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-size: 20px;
  line-height: 1.45;
}

.campus-stack { display: grid; grid-template-columns: 1fr 1fr; }
.campus-stack > div {
  position: relative;
  min-height: 148px;
  padding: 27px 28px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.campus-stack > div:nth-child(2n) { border-right: 0; }
.campus-stack > div:nth-last-child(-n+2) { border-bottom: 0; }
.campus-stack span {
  display: block;
  margin-bottom: 22px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .14em;
}
.campus-stack strong { display: block; margin-bottom: 5px; font-size: 15px; }
.campus-stack small { color: var(--muted); font-size: 12px; }

/* ---- Footer ---- */
.footer-shell { border-top: 1px solid var(--border); background: var(--bg-raise); }
.footer {
  min-height: 106px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .10em;
  text-transform: uppercase;
}
.footer-brand { color: var(--muted); }
.footer-brand .dot { margin: 0 6px; font-size: 7px; }

/* ---- Progressive reveal: JS adds .reveal, so content stays visible if JS fails ---- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 760ms cubic-bezier(.23, 1, .32, 1), transform 760ms cubic-bezier(.23, 1, .32, 1);
  transition-delay: var(--reveal-delay, 0ms);
}
.reveal.in { opacity: 1; transform: translateY(0); }
.service-step:nth-child(2) { --reveal-delay: 70ms; }
.service-step:nth-child(3) { --reveal-delay: 140ms; }
.service-step:nth-child(4) { --reveal-delay: 210ms; }

@keyframes travel {
  0% { left: 2%; opacity: 0; }
  10% { opacity: .9; }
  86% { opacity: .9; }
  100% { left: 97%; opacity: 0; }
}
@keyframes orbit { to { transform: rotate(360deg); } }
@keyframes core-pulse {
  0% { transform: scale(.72); opacity: .75; }
  68%, 100% { transform: scale(1.12); opacity: 0; }
}
@keyframes status { 50% { opacity: .35; } }

@media (max-width: 1120px) {
  .hero-content { max-width: 1020px; }
  .service-line { grid-template-columns: 1fr 1fr; }
  .service-step { min-height: 300px; border-bottom: 1px solid var(--border); }
  .service-step:nth-child(2) { border-right: 0; }
  .service-step:nth-last-child(-n+2) { border-bottom: 0; }
  .step-index { margin-bottom: 56px; }
}

@media (max-width: 860px) {
  .hero-section, .hero-wrap { min-height: calc(100svh - 58px); }
  .hero-wrap { padding-top: 112px; padding-bottom: 112px; }
  .hero-content { max-width: 760px; }
  .topology-container { width: min(90vw, 580px); margin: 84px auto 0; justify-self: auto; }
  .campus-grid { grid-template-columns: 1fr; }
  .campus-copy { max-width: 690px; }
}

@media (max-width: 640px) {
  .wrap, .nav-inner { width: min(100% - 36px, var(--maxw)); }
  .nav .brand { font-size: 10px; letter-spacing: .10em; }
  .nav-links a { min-height: 30px; padding: 0 9px; font-size: 8px; }
  .hero-wrap { padding-top: 86px; padding-bottom: 88px; }
  h1 { font-size: clamp(44px, 15vw, 66px); }
  .hero-content h1 { font-size: clamp(52px, 16vw, 78px); line-height: .94; }
  h2 { font-size: clamp(34px, 10vw, 50px); }
  .hero-lede { font-size: 18px; }
  .hero-signals { display: grid; grid-template-columns: 1fr 1fr; }
  .topology-container { display: none; }
  .section-pad { padding: 88px 0; }
  .service-line { grid-template-columns: 1fr; }
  .service-step,
  .service-step:nth-child(2),
  .service-step:nth-last-child(-n+2) {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
  .service-step:last-child { border-bottom: 0; }
  .step-index { margin-bottom: 42px; }
  .campus-stack { grid-template-columns: 1fr; }
  .campus-stack > div,
  .campus-stack > div:nth-child(2n),
  .campus-stack > div:nth-last-child(-n+2) { border-right: 0; border-bottom: 1px solid var(--border); }
  .campus-stack > div:last-child { border-bottom: 0; }
  .footer { min-height: 136px; align-items: flex-start; justify-content: center; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   Investor Thesis Layout
   ============================================================ */
.thesis-section {
  border-top: 1px solid var(--border-hi);
  background: var(--bg-raise);
}

.thesis-chapter {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: 80px 0;
  border-bottom: 1px solid var(--border-hi);
}

.thesis-chapter:last-child {
  border-bottom: none;
}

@media (min-width: 768px) {
  .thesis-chapter {
    grid-template-columns: 260px 1fr;
    gap: 48px;
  }
}

@media (min-width: 1024px) {
  .thesis-chapter {
    grid-template-columns: 340px 1fr;
    padding: 120px 0;
  }
  
  .chapter-content {
    max-width: 780px;
  }
}

.chapter-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 6px;
}

.chapter-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: .16em;
}

.chapter-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-weight: 650;
}

.chapter-content h2 {
  font-size: clamp(26px, 3vw, 42px);
  line-height: 1.2;
  letter-spacing: -.02em;
  margin-bottom: 28px;
  color: var(--text);
}

.chapter-content p {
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 24px;
}

.chapter-content p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   Full-width infrastructure knowledge graph
   ============================================================ */
.graph-section {
  position: relative;
  overflow: hidden;
  padding: clamp(92px, 9vw, 150px) 0 clamp(100px, 10vw, 170px);
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(rgba(30, 39, 51, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 39, 51, .08) 1px, transparent 1px),
    radial-gradient(ellipse 54% 50% at 50% 52%, color-mix(in srgb, var(--green) 5%, transparent), transparent 72%),
    var(--bg);
  background-size: 72px 72px, 72px 72px, auto, auto;
}

.graph-wrap {
  position: relative;
  width: min(calc(100% - 48px), 1640px);
  margin-inline: auto;
}

.graph-section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, .85fr);
  gap: 18px clamp(48px, 7vw, 120px);
  align-items: end;
  margin-bottom: clamp(40px, 4vw, 66px);
  padding-inline: 2px;
}

.graph-section-head .section-kicker {
  grid-column: 1 / -1;
  margin-bottom: 0;
}

.graph-section-head h2 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(44px, 4.6vw, 76px);
  line-height: .98;
  letter-spacing: -.045em;
}

.graph-section-head p {
  max-width: 620px;
  margin: 0;
  justify-self: end;
  color: var(--muted);
  font-size: clamp(16px, 1.25vw, 20px);
  line-height: 1.58;
}

.knowledge-graph {
  --kg-signal: var(--green);
  --kg-core: #a8ff1a;
  --kg-delivery: var(--cyan);
  --kg-asset: var(--teal);
  --kg-capital: var(--amber);
  --kg-lifecycle: var(--violet);
  --kg-output: #e3edf7;
  position: relative;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--border-hi);
  border-radius: var(--rad);
  background:
    radial-gradient(circle at 63% 22%, color-mix(in srgb, var(--green) 7%, transparent), transparent 28%),
    radial-gradient(circle at 82% 78%, color-mix(in srgb, var(--violet) 7%, transparent), transparent 30%),
    rgba(8, 11, 16, .92);
  box-shadow: 0 28px 90px rgba(0, 0, 0, .36), inset 0 0 70px rgba(7, 9, 13, .45);
}

.knowledge-graph::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(110deg, transparent 36%, rgba(255,255,255,.025) 50%, transparent 64%);
  transform: translateX(-100%);
  animation: kg-scan 9s ease-in-out infinite;
}

.kg-toolbar {
  min-height: 50px;
  padding: 0 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid var(--border);
  color: var(--faint);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.kg-live { display: inline-flex; align-items: center; gap: 7px; }
.kg-live i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: status 2s ease-in-out infinite;
}

.kg-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 940 / 720;
  overflow: hidden;
}

.kg-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.kg-guides line {
  stroke: rgba(44, 57, 71, .42);
  stroke-width: 1;
  stroke-dasharray: 2 8;
}

.kg-guides text {
  fill: var(--faint);
  font-family: var(--mono);
  font-size: 8px;
  font-weight: 650;
  letter-spacing: 1.35px;
}

.kg-link {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.05;
  stroke-opacity: .25;
  marker-end: url(#kg-arrow);
  vector-effect: non-scaling-stroke;
  transition: stroke-opacity 180ms cubic-bezier(.23, 1, .32, 1), stroke-width 180ms cubic-bezier(.23, 1, .32, 1), filter 180ms cubic-bezier(.23, 1, .32, 1);
}
.link-signal { color: var(--kg-signal); }
.link-core { color: var(--kg-core); }
.link-delivery { color: var(--kg-delivery); }
.link-asset { color: var(--kg-asset); }
.link-capital { color: var(--kg-capital); }
.link-lifecycle { color: var(--kg-lifecycle); }
.link-output { color: var(--kg-output); }

.kg-link.is-related {
  stroke-opacity: .88;
  stroke-width: 1.8;
  filter: drop-shadow(0 0 3px currentColor);
}

.kg-packet { filter: url(#kg-glow); }
.packet-green { fill: var(--kg-signal); }
.packet-teal { fill: var(--kg-asset); }

.kg-node {
  color: var(--faint);
  cursor: crosshair;
  outline: none;
}

.kg-node rect {
  fill: rgba(12, 16, 22, .94);
  stroke: currentColor;
  stroke-width: .9;
  stroke-opacity: .46;
  rx: 3px;
  vector-effect: non-scaling-stroke;
  transition: fill 160ms ease, stroke-opacity 160ms ease, filter 160ms ease;
}

.kg-node circle:not(.core-halo) {
  fill: currentColor;
  filter: drop-shadow(0 0 4px currentColor);
}

.kg-node text {
  fill: var(--muted);
  font-family: var(--mono);
  font-size: 8.3px;
  font-weight: 560;
  letter-spacing: .18px;
  pointer-events: none;
}

.kg-node-major text { fill: var(--text); font-size: 8.7px; letter-spacing: .55px; }
.kg-node .node-sub { fill: var(--faint); font-size: 7px; letter-spacing: 1.1px; }
.kg-node-major rect { fill: rgba(16, 22, 29, .98); stroke-opacity: .8; }
.kg-node-core rect { fill: color-mix(in srgb, var(--green) 8%, rgba(12,16,22,.96)); stroke-width: 1.35; filter: drop-shadow(0 0 8px rgba(118,185,0,.13)); }
.kg-node-core .core-halo { fill: none; stroke: var(--green); stroke-width: 1; opacity: .55; transform-box: fill-box; transform-origin: center; animation: kg-core-pulse 2.8s ease-out infinite; }

.domain-signal { color: var(--kg-signal); }
.domain-core { color: var(--kg-core); }
.domain-delivery { color: var(--kg-delivery); }
.domain-asset { color: var(--kg-asset); }
.domain-capital { color: var(--kg-capital); }
.domain-lifecycle { color: var(--kg-lifecycle); }
.domain-output { color: var(--kg-output); }

.kg-node:hover rect,
.kg-node:focus rect,
.kg-node.is-active rect {
  fill: color-mix(in srgb, currentColor 10%, #0c1016);
  stroke-opacity: 1;
  filter: drop-shadow(0 0 7px color-mix(in srgb, currentColor 35%, transparent));
}

.kg-node.is-muted { opacity: .34; }

.kg-footer {
  min-height: 96px;
  padding: 16px 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  border-top: 1px solid var(--border);
  background: rgba(7, 9, 13, .68);
}

.kg-detail { min-width: 0; }
.kg-detail-label {
  display: block;
  margin-bottom: 5px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 650;
  letter-spacing: .09em;
  text-transform: uppercase;
}
.kg-detail-copy {
  display: block;
  max-width: 760px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.45;
}

.kg-legend {
  display: grid;
  grid-template-columns: repeat(5, auto);
  gap: 5px 12px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.kg-legend span { display: flex; align-items: center; gap: 5px; }
.kg-legend i { width: 5px; height: 5px; border-radius: 50%; box-shadow: 0 0 6px currentColor; }
.legend-signal { color: var(--kg-signal); background: currentColor; }
.legend-delivery { color: var(--kg-delivery); background: currentColor; }
.legend-asset { color: var(--kg-asset); background: currentColor; }
.legend-capital { color: var(--kg-capital); background: currentColor; }
.legend-lifecycle { color: var(--kg-lifecycle); background: currentColor; }

@keyframes kg-scan {
  0%, 34% { transform: translateX(-100%); }
  56%, 100% { transform: translateX(100%); }
}

@keyframes kg-core-pulse {
  0% { transform: scale(.7); opacity: .7; }
  75%, 100% { transform: scale(1.8); opacity: 0; }
}

@media (max-width: 1120px) {
  .graph-section-head {
    grid-template-columns: 1fr;
    gap: 22px;
  }
  .graph-section-head .section-kicker { grid-column: 1; }
  .graph-section-head p { max-width: 760px; justify-self: start; }
  .knowledge-graph { width: 100%; margin: 0; }
}

@media (max-width: 620px) {
  .graph-section { padding: 82px 0 96px; }
  .graph-wrap { width: calc(100% - 20px); }
  .graph-section-head { margin-bottom: 34px; padding-inline: 8px; }
  .graph-section-head h2 { font-size: clamp(40px, 12vw, 56px); }
  .graph-section-head p { font-size: 16px; }
  .knowledge-graph { margin: 0; overflow: hidden; }
  .kg-toolbar { min-height: 44px; padding-inline: 12px; font-size: 7px; }
  .kg-stage { overflow-x: auto; overflow-y: hidden; aspect-ratio: auto; padding-bottom: 6px; scrollbar-width: thin; scrollbar-color: var(--border-hi) transparent; }
  .kg-canvas { width: 940px; height: auto; max-width: none; }
  .kg-footer { grid-template-columns: 1fr; min-height: 122px; padding: 14px 12px; }
  .kg-legend { grid-template-columns: repeat(5, auto); justify-content: start; gap: 6px 10px; overflow-x: auto; }
  .kg-detail-copy { min-height: 30px; }
}

@media (prefers-reduced-motion: reduce) {
  .knowledge-graph::after,
  .kg-node-core .core-halo,
  .kg-live i { animation: none; }
  .kg-packets { display: none; }
}


/* ============================================================
   Vertical integration and investor relevance
   ============================================================ */
.integration-section {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse 48% 62% at 92% 8%, color-mix(in srgb, var(--cyan) 5%, transparent), transparent 68%),
    var(--bg);
}

.integration-heading {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(320px, .55fr);
  gap: clamp(36px, 8vw, 130px);
  align-items: end;
  margin-bottom: clamp(52px, 7vw, 88px);
}

.integration-heading .section-kicker { grid-column: 1 / -1; margin-bottom: 0; }
.integration-heading h2 { grid-column: 1; margin-bottom: 0; max-width: 860px; }
.integration-heading p {
  grid-column: 2;
  align-self: end;
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.62;
}

.integration-stack {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--border-hi);
  border-left: 1px solid var(--border);
}

.integration-layer {
  position: relative;
  min-height: 238px;
  padding: 24px 22px 26px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel) 62%, transparent), transparent 94%);
  transition: background 220ms cubic-bezier(.23, 1, .32, 1), transform 220ms cubic-bezier(.23, 1, .32, 1);
}

.integration-layer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 34%;
  height: 2px;
  background: var(--green);
  box-shadow: 0 0 14px color-mix(in srgb, var(--green) 35%, transparent);
  transform-origin: left;
  transition: width 320ms cubic-bezier(.23, 1, .32, 1);
}

.integration-layer:nth-child(3n+2)::before { background: var(--cyan); box-shadow: 0 0 14px color-mix(in srgb, var(--cyan) 28%, transparent); }
.integration-layer:nth-child(3n)::before { background: var(--amber); box-shadow: 0 0 14px color-mix(in srgb, var(--amber) 24%, transparent); }
.integration-layer:hover { background: color-mix(in srgb, var(--panel) 88%, transparent); transform: translateY(-3px); }
.integration-layer:hover::before { width: 100%; }
.integration-layer span {
  display: block;
  margin-bottom: 64px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 650;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.integration-layer strong {
  display: block;
  margin-bottom: 12px;
  color: var(--text);
  font-size: 17px;
  letter-spacing: -.01em;
}
.integration-layer p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.56; }

.investor-relevance {
  border-top: 1px solid var(--border-hi);
  background:
    radial-gradient(ellipse 42% 70% at 0% 100%, color-mix(in srgb, var(--amber) 6%, transparent), transparent 70%),
    var(--bg);
}

.investor-grid {
  display: grid;
  grid-template-columns: minmax(320px, .85fr) minmax(0, 1.15fr);
  gap: clamp(56px, 9vw, 150px);
  align-items: start;
}
.investor-heading h2 { margin-bottom: 0; font-size: clamp(38px, 4.4vw, 64px); }
.investor-points { border-top: 1px solid var(--border-hi); }
.investor-points article {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 18px;
  padding: 27px 0 29px;
  border-bottom: 1px solid var(--border);
}
.investor-points article > span {
  color: var(--amber);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .14em;
}
.investor-points strong { display: block; margin-bottom: 8px; color: var(--text); font-size: 16px; }
.investor-points p { max-width: 650px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.58; }

@media (max-width: 1000px) {
  .integration-heading { grid-template-columns: 1fr; align-items: start; }
  .integration-heading .section-kicker,
  .integration-heading h2,
  .integration-heading p { grid-column: 1; }
  .integration-heading p { max-width: 720px; }
  .integration-stack { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .investor-grid { grid-template-columns: 1fr; }
  .investor-heading { max-width: 760px; }
}

@media (max-width: 620px) {
  .integration-stack { grid-template-columns: 1fr; }
  .integration-layer { min-height: auto; }
  .integration-layer span { margin-bottom: 42px; }
  .investor-points article { grid-template-columns: 34px 1fr; gap: 12px; }
}