/* =========================================================
   NEXUSLABS — Observatory aesthetic
   Hyperautomated Research Lab · LLM + LQM Architecture
   ========================================================= */

:root {
  /* base */
  --bg-void:        #06070d;
  --bg-deep:        #0a0c14;
  --bg-elev:        #11141d;
  --bg-elev-2:      #161a25;
  --line:           rgba(255, 255, 255, 0.06);
  --line-strong:    rgba(255, 255, 255, 0.12);
  --line-glow:      rgba(110, 140, 255, 0.32);

  /* ink */
  --ink:            #ecf0f8;
  --ink-muted:      #8a93a8;
  --ink-faint:      #4a5169;
  --ink-deep:       #2c3142;

  /* accents */
  --photonic:       #6e8cff;
  --photonic-soft:  #8aa3ff;
  --aurora:         #22d3ee;
  --violet:         #a78bfa;
  --emerald:        #34d399;
  --amber:          #fbbf24;

  /* type */
  --font-display:   "Manrope", "Inter", -apple-system, sans-serif;
  --font-serif:     "Instrument Serif", "Times New Roman", serif;
  --font-mono:      "JetBrains Mono", "Menlo", monospace;

  /* motion */
  --ease:           cubic-bezier(.22, .61, .36, 1);
  --t-fast:         .18s var(--ease);
  --t-base:         .32s var(--ease);
  --t-slow:         .6s var(--ease);

  /* layout */
  --gutter:         clamp(24px, 4vw, 64px);
  --maxw:           1280px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg-void);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: 0; color: inherit; }
ul, ol { list-style: none; }
input, textarea, select { font: inherit; color: inherit; }

/* ---------- grain overlay (atmosphere) ---------- */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9000;
  opacity: 0.08;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.9'/></svg>");
}

/* ---------- vignette ---------- */
.vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 8000;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,0.55) 100%);
}

/* ---------- container ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
}

/* ---------- typography primitives ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.eyebrow .dot {
  width: 6px; height: 6px;
  background: var(--photonic);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--photonic);
  animation: blink 2.4s ease-in-out infinite;
}
.eyebrow .bar {
  width: 24px; height: 1px;
  background: linear-gradient(90deg, var(--photonic), transparent);
}
@keyframes blink {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.7); }
}

.h-display {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 0.96;
  font-size: clamp(2.8rem, 7.5vw, 6rem);
  color: var(--ink);
}
.h-display .italic,
h1 .italic, h2 .italic, h3 .italic {
  font-family: var(--font-serif);
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.02em;
  color: var(--photonic-soft);
}
.h-section {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  font-size: clamp(2rem, 4.6vw, 3.6rem);
  color: var(--ink);
}
.h-card {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.15;
  font-size: 1.125rem;
}
.lede {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1rem, 1.4vw, 1.18rem);
  line-height: 1.65;
  color: var(--ink-muted);
  max-width: 62ch;
}
.mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.gradient-ink {
  background: linear-gradient(135deg, #ecf0f8 0%, var(--photonic-soft) 55%, var(--violet) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- buttons ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: var(--t-base);
  white-space: nowrap;
}
.btn--primary {
  background: var(--ink);
  color: var(--bg-void);
  box-shadow: 0 0 0 1px var(--ink), 0 0 30px rgba(110, 140, 255, 0.15);
}
.btn--primary:hover {
  background: var(--photonic-soft);
  color: var(--bg-void);
  box-shadow: 0 0 0 1px var(--photonic-soft), 0 0 40px rgba(110, 140, 255, 0.45);
  transform: translateY(-1px);
}
.btn--ghost {
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--line-strong);
  background: rgba(255,255,255,0.02);
}
.btn--ghost:hover {
  box-shadow: inset 0 0 0 1px var(--photonic);
  background: rgba(110, 140, 255, 0.08);
  color: var(--photonic-soft);
}
.btn .arrow { transition: transform .3s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- nav ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 18px 0;
  transition: var(--t-base);
}
.nav.scrolled {
  padding: 10px 0;
  background: rgba(6, 7, 13, 0.7);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand__mark {
  width: 28px; height: 28px;
  position: relative;
}
.brand__mark::before,
.brand__mark::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--photonic);
  border-radius: 50%;
}
.brand__mark::before {
  transform: scaleX(0.45);
  border-color: var(--violet);
}
.brand__mark::after {
  transform: scaleY(0.45);
  border-color: var(--aurora);
}
.brand__mark .core {
  position: absolute;
  inset: 50% 50% auto auto;
  width: 6px; height: 6px;
  background: var(--ink);
  border-radius: 50%;
  transform: translate(50%, -50%);
  box-shadow: 0 0 12px var(--photonic);
}
.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
}
.brand__name sup {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--photonic);
  margin-left: 4px;
  vertical-align: super;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav__links a {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding: 8px 12px;
  border-radius: 4px;
  transition: var(--t-fast);
  white-space: nowrap;
}
.nav__links a:hover {
  color: var(--ink);
  background: rgba(255,255,255,0.04);
}
.nav__cta { margin-left: 8px; padding: 10px 18px; }

.hamburger {
  display: none;
  width: 36px; height: 36px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border-radius: 4px;
  transition: var(--t-fast);
}
.hamburger span {
  width: 18px;
  height: 1px;
  background: var(--ink);
  transition: var(--t-fast);
}
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 16px var(--gutter) 24px;
  background: rgba(6,7,13,0.96);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding: 12px 8px;
  border-bottom: 1px solid var(--line);
}
.mobile-nav .btn { margin-top: 14px; justify-content: center; }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 140px 0 80px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background:
    radial-gradient(ellipse 80% 60% at 50% 100%, rgba(110,140,255,0.18), transparent 70%),
    radial-gradient(ellipse 60% 50% at 30% 20%, rgba(167,139,250,0.12), transparent 70%),
    linear-gradient(180deg, rgba(6,7,13,0) 0%, rgba(6,7,13,0) 55%, rgba(6,7,13,0.85) 100%);
}

/* HUD corners */
.hud {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  padding: 90px var(--gutter) 24px;
}
.hud__corner {
  position: absolute;
  width: 18px; height: 18px;
  border: 1px solid var(--line-strong);
}
.hud__corner.tl { top: 90px; left: var(--gutter); border-right: 0; border-bottom: 0; }
.hud__corner.tr { top: 90px; right: var(--gutter); border-left: 0; border-bottom: 0; }
.hud__corner.bl { bottom: 24px; left: var(--gutter); border-right: 0; border-top: 0; }
.hud__corner.br { bottom: 24px; right: var(--gutter); border-left: 0; border-top: 0; }
.hud__label {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.hud__label.tl { top: 96px; left: calc(var(--gutter) + 30px); }
.hud__label.tr { top: 96px; right: calc(var(--gutter) + 30px); }
.hud__label.bl { bottom: 30px; left: calc(var(--gutter) + 30px); }
.hud__label.br { bottom: 30px; right: calc(var(--gutter) + 30px); }
.hud__label .blink { color: var(--emerald); }

/* hero content */
.hero__inner {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
  background: rgba(255,255,255,0.02);
  width: fit-content;
}
.hero__tag .dot {
  width: 6px; height: 6px;
  background: var(--emerald);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--emerald);
}

.hero__headline {
  font-size: clamp(2.6rem, 7vw, 5.4rem);
  max-width: 18ch;
}
.hero__sub {
  max-width: 56ch;
  margin-top: 4px;
}
.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

/* hero telemetry strip */
.telemetry {
  position: relative;
  z-index: 3;
  margin-top: 64px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.telemetry__cell {
  padding: 0 24px 0 0;
  border-right: 1px solid var(--line);
}
.telemetry__cell:last-child { border-right: 0; }
.telemetry__cell .mono { color: var(--photonic); }
.telemetry__cell .val {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.4rem, 2.2vw, 1.8rem);
  letter-spacing: -0.02em;
  margin-top: 4px;
  color: var(--ink);
}
.telemetry__cell .lbl {
  font-size: 12px;
  color: var(--ink-muted);
  margin-top: 4px;
}

/* scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  z-index: 3;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.scroll-hint__bar {
  width: 1px;
  height: 36px;
  background: linear-gradient(180deg, transparent, var(--photonic), transparent);
  position: relative;
  overflow: hidden;
}
.scroll-hint__bar::after {
  content: "";
  position: absolute;
  top: -50%;
  left: 0;
  width: 1px;
  height: 50%;
  background: var(--ink);
  animation: scrollDot 2s ease-in-out infinite;
}
@keyframes scrollDot {
  0% { top: -50%; opacity: 0; }
  50% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

/* =========================================================
   SECTION SHELL
   ========================================================= */
section { position: relative; }
.section {
  padding: clamp(80px, 12vw, 160px) 0;
  position: relative;
}
.section--surface {
  background: var(--bg-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section__header {
  display: grid;
  gap: 20px;
  max-width: var(--maxw);
  margin: 0 auto 80px;
  padding: 0 var(--gutter);
}
.section__header .h-section { max-width: 22ch; }
.section__header .lede { margin-top: 8px; }

/* numbered section markers */
.section__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
}

/* =========================================================
   PROBLEM
   ========================================================= */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.problem-stat {
  padding: 36px 32px;
  border-right: 1px solid var(--line);
  position: relative;
  transition: var(--t-base);
}
.problem-stat:last-child { border-right: 0; }
.problem-stat::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 0;
  height: 1px;
  background: var(--photonic);
  transition: width .6s var(--ease);
}
.problem-stat:hover::before { width: 100%; }
.problem-stat .num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 4vw, 3.2rem);
  letter-spacing: -0.04em;
  line-height: 1;
  background: linear-gradient(135deg, var(--ink) 0%, var(--photonic-soft) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 12px;
}
.problem-stat .num sup { font-size: 0.5em; vertical-align: super; }
.problem-stat .lbl {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 8px;
}
.problem-stat .desc {
  font-size: 14px;
  color: var(--ink-muted);
  line-height: 1.6;
}

.problem-quote {
  margin-top: 48px;
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  align-items: flex-start;
  max-width: 920px;
}
.problem-quote .mark {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 5rem;
  line-height: 1;
  color: var(--photonic);
  opacity: 0.5;
}
.problem-quote p {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.6vw, 1.3rem);
  line-height: 1.55;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.problem-quote em {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--photonic-soft);
}

/* =========================================================
   TECHNOLOGY — 3D architecture
   ========================================================= */
.tech-stage {
  position: relative;
  height: clamp(440px, 60vh, 620px);
  margin: 0 auto;
  max-width: var(--maxw);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 60% 80% at 50% 50%, rgba(110,140,255,0.05), transparent 70%),
    var(--bg-void);
  overflow: hidden;
}
#tech-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.tech-stage__hud {
  position: absolute;
  inset: 0;
  padding: 20px;
  pointer-events: none;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.tech-stage__hud .left,
.tech-stage__hud .right {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.tech-stage__hud .right { text-align: right; }
.tech-stage__hud .blink {
  color: var(--emerald);
}

/* node labels overlay on canvas */
.node-label {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  background: rgba(6,7,13,0.85);
  border: 1px solid var(--line-strong);
  padding: 6px 10px;
  border-radius: 3px;
  white-space: nowrap;
  transform: translate(-50%, -50%);
  pointer-events: none;
  backdrop-filter: blur(6px);
  z-index: 5;
}
.node-label::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--photonic);
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
  box-shadow: 0 0 8px var(--photonic);
}
.node-label.violet::before { background: var(--violet); box-shadow: 0 0 8px var(--violet); }
.node-label.aurora::before { background: var(--aurora); box-shadow: 0 0 8px var(--aurora); }
.node-label.emerald::before { background: var(--emerald); box-shadow: 0 0 8px var(--emerald); }

/* tech feature cards */
.tech-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 80px;
  max-width: var(--maxw);
  margin-left: auto;
  margin-right: auto;
  border-top: 1px solid var(--line);
}
.tech-feature {
  padding: 40px 32px;
  border-right: 1px solid var(--line);
  position: relative;
}
.tech-feature:last-child { border-right: 0; }
.tech-feature .icon {
  width: 40px; height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--photonic);
  margin-bottom: 24px;
  position: relative;
}
.tech-feature .icon::before {
  content: "";
  position: absolute;
  inset: -1px;
  border: 1px solid var(--photonic);
  opacity: 0;
  transition: var(--t-base);
  border-radius: 4px;
}
.tech-feature:hover .icon::before { opacity: 0.6; inset: -5px; }
.tech-feature h3 { margin-bottom: 12px; }
.tech-feature p {
  font-size: 14px;
  color: var(--ink-muted);
  line-height: 1.65;
}
.tech-feature .index {
  position: absolute;
  top: 16px; right: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
}

/* =========================================================
   DISCOVERY ENGINE (steps)
   ========================================================= */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  border-top: 1px solid var(--line);
}
.step {
  display: grid;
  grid-template-columns: 80px 1fr 320px;
  gap: 40px;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  align-items: flex-start;
  transition: var(--t-base);
}
.step::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, rgba(110,140,255,0.08), transparent 50%);
  transition: width .5s var(--ease);
  pointer-events: none;
  z-index: 0;
}
.step:hover::before { width: 100%; }
.step > * { position: relative; z-index: 1; }
.step__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--photonic);
  padding-top: 6px;
}
.step__body h3 {
  margin-bottom: 10px;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}
.step__body p {
  color: var(--ink-muted);
  font-size: 15px;
  line-height: 1.65;
  max-width: 56ch;
}
.step__viz {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
  line-height: 1.7;
  border-left: 1px solid var(--line);
  padding-left: 24px;
}
.step__viz .tag {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  margin: 2px 4px 2px 0;
  color: var(--ink-muted);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* =========================================================
   PRODUCTS
   ========================================================= */
.products {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.product {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--t-base);
  display: flex;
  flex-direction: column;
}
.product--featured {
  grid-column: span 12;
  min-height: 420px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
}
.product--small { grid-column: span 4; }
.product:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.product__viz {
  position: relative;
  background:
    radial-gradient(ellipse at 30% 30%, rgba(110,140,255,0.18), transparent 60%),
    radial-gradient(ellipse at 70% 70%, rgba(167,139,250,0.12), transparent 60%),
    var(--bg-deep);
  border-right: 1px solid var(--line);
  overflow: hidden;
  min-height: 280px;
}
.product__viz canvas {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
}
.product__viz-hud {
  position: absolute;
  top: 16px; left: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-faint);
  z-index: 1;
  pointer-events: none;
}
.product__viz-hud .blink {
  color: var(--emerald);
}
.product__body {
  padding: 36px 36px 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
}
.product__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.product__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 5px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  color: var(--ink-muted);
}
.product__badge.live {
  color: var(--emerald);
  border-color: rgba(52, 211, 153, 0.3);
  background: rgba(52, 211, 153, 0.05);
}
.product__badge.live .dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--emerald);
  box-shadow: 0 0 8px var(--emerald);
  animation: blink 2s infinite;
}
.product__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: -0.025em;
  line-height: 1;
  margin: 14px 0 8px;
}
.product__domain {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--photonic);
}
.product__desc {
  font-size: 14.5px;
  color: var(--ink-muted);
  line-height: 1.65;
  margin-top: 16px;
}
.product__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}
.product__tag {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--ink-faint);
}
.product__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--photonic-soft);
  margin-top: 12px;
  transition: var(--t-fast);
}
.product__cta:hover { color: var(--ink); gap: 12px; }

.product--soon { opacity: 0.85; }
.product--soon .product__name { color: var(--ink-muted); }

/* =========================================================
   NEXCON-03 deep dive
   ========================================================= */
.crystal-stage {
  position: relative;
  height: clamp(420px, 56vh, 620px);
  max-width: var(--maxw);
  margin: 0 auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 50% 50%, rgba(34,211,238,0.05), transparent 60%),
    var(--bg-void);
  overflow: hidden;
}
#crystal-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.crystal-controls {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 4px;
  background: rgba(6,7,13,0.85);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 4px;
  z-index: 10;
  backdrop-filter: blur(12px);
}
.crystal-controls button {
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  border-radius: 4px;
  transition: var(--t-fast);
}
.crystal-controls button.active {
  background: var(--ink);
  color: var(--bg-void);
}
.crystal-controls button:hover:not(.active) {
  color: var(--ink);
  background: rgba(255,255,255,0.04);
}

.crystal-readout {
  position: absolute;
  top: 24px;
  left: 24px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-faint);
  z-index: 5;
  pointer-events: none;
}
.crystal-readout .row {
  display: flex;
  gap: 12px;
  margin-bottom: 4px;
}
.crystal-readout .key { color: var(--ink-faint); }
.crystal-readout .val { color: var(--ink); min-width: 80px; }
.crystal-readout .accent { color: var(--aurora); }

.crystal-info {
  position: absolute;
  top: 24px;
  right: 24px;
  max-width: 280px;
  z-index: 5;
  text-align: right;
}
.crystal-info .lbl {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--aurora);
  margin-bottom: 8px;
}
.crystal-info h4 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.crystal-info p {
  font-size: 13px;
  color: var(--ink-muted);
  line-height: 1.6;
}

.materials-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  max-width: var(--maxw);
  margin: 80px auto 0;
  padding: 0 var(--gutter);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.material {
  padding: 32px 28px;
  border-right: 1px solid var(--line);
  position: relative;
  transition: var(--t-base);
}
.material:last-child { border-right: 0; }
.material:hover { background: rgba(110,140,255,0.03); }
.material .formula {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 2rem;
  letter-spacing: -0.02em;
  color: var(--photonic-soft);
  margin-bottom: 16px;
  line-height: 1;
}
.material .tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.material h3 {
  margin-bottom: 12px;
  font-size: 1.05rem;
}
.material p {
  font-size: 13.5px;
  color: var(--ink-muted);
  line-height: 1.6;
}

.materials-note {
  max-width: var(--maxw);
  margin: 32px auto 0;
  padding: 0 var(--gutter);
  font-size: 13px;
  color: var(--ink-faint);
  line-height: 1.7;
}
.materials-note strong { color: var(--ink-muted); font-weight: 600; }

/* =========================================================
   DEMO BLOCK
   ========================================================= */
.demo-block {
  max-width: var(--maxw);
  margin: 80px auto 0;
  padding: 0 var(--gutter);
}
.demo-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-deep);
  cursor: pointer;
}
.demo-frame:hover { border-color: var(--photonic); }
.demo-frame__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 30%, rgba(110,140,255,0.15), transparent 60%),
    radial-gradient(ellipse at 70% 70%, rgba(34,211,238,0.1), transparent 60%);
  opacity: 0.6;
}
.demo-frame__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(110,140,255,0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110,140,255,0.1) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at center, black 30%, transparent 70%);
}
.demo-frame__inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
}
.demo-play {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--bg-void);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--t-base);
  box-shadow: 0 0 40px rgba(110,140,255,0.4);
}
.demo-frame:hover .demo-play {
  transform: scale(1.08);
  box-shadow: 0 0 60px rgba(110,140,255,0.7);
}
.demo-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.demo-corners .demo-frame__corner {
  position: absolute;
  width: 12px; height: 12px;
  border-color: var(--ink-muted);
  border-style: solid;
}
.demo-frame__corner.tl { top: 12px; left: 12px; border-width: 1px 0 0 1px; }
.demo-frame__corner.tr { top: 12px; right: 12px; border-width: 1px 1px 0 0; }
.demo-frame__corner.bl { bottom: 12px; left: 12px; border-width: 0 0 1px 1px; }
.demo-frame__corner.br { bottom: 12px; right: 12px; border-width: 0 1px 1px 0; }
.demo-mono-readout {
  position: absolute;
  top: 16px; left: 30px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.demo-mono-readout .blink { color: var(--emerald); }

/* demo modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 5000;
  background: rgba(6,7,13,0.92);
  backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: var(--t-base);
}
.modal.open { opacity: 1; pointer-events: all; }
.modal__inner {
  position: relative;
  max-width: 1000px;
  width: 100%;
  border: 1px solid var(--line-strong);
  background: var(--bg-deep);
  border-radius: 8px;
  overflow: hidden;
}
.modal__video {
  aspect-ratio: 16/9;
  background: var(--bg-void);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  color: var(--ink-muted);
  text-align: center;
}
.modal__close {
  position: absolute;
  top: 14px; right: 14px;
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: rgba(6,7,13,0.8);
  color: var(--ink);
  transition: var(--t-fast);
}
.modal__close:hover { background: var(--ink); color: var(--bg-void); }

/* =========================================================
   TEAM
   ========================================================= */
.team {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  max-width: 940px;
  margin: 0 auto;
  padding: 0 var(--gutter);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.member {
  padding: 48px 36px;
  border-right: 1px solid var(--line);
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  align-items: flex-start;
}
.member:last-child { border-right: 0; }
.member__avatar {
  width: 76px; height: 76px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  position: relative;
  background:
    radial-gradient(circle at 50% 30%, rgba(110,140,255,0.4), transparent 60%),
    var(--bg-elev);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.member__avatar::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--photonic);
  opacity: 0.3;
  transform: scale(1.15);
}
.member__avatar .initials {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 2rem;
  color: var(--photonic-soft);
  letter-spacing: -0.02em;
}
.member__role {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--photonic);
  margin-bottom: 4px;
}
.member__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.member__bio {
  font-size: 14px;
  color: var(--ink-muted);
  line-height: 1.65;
}

/* =========================================================
   CONTACT
   ========================================================= */
.contact {
  position: relative;
  padding: clamp(80px, 12vw, 160px) 0;
  overflow: hidden;
  border-top: 1px solid var(--line);
}
.contact__glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 50% 100%, rgba(110,140,255,0.2), transparent 70%),
    radial-gradient(ellipse 40% 30% at 50% 0%, rgba(167,139,250,0.1), transparent 70%);
}
.contact__inner {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--gutter);
  text-align: center;
}
.contact__inner .h-section {
  max-width: 18ch;
  margin: 16px auto 20px;
}
.contact__inner .lede { margin: 0 auto 56px; }

.contact__form {
  display: grid;
  gap: 16px;
  text-align: left;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.field input,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 14.5px;
  transition: var(--t-fast);
  outline: 0;
}
.field input::placeholder, .field textarea::placeholder { color: var(--ink-faint); }
.field input:focus, .field textarea:focus {
  border-color: var(--photonic);
  background: rgba(110,140,255,0.04);
  box-shadow: 0 0 0 4px rgba(110,140,255,0.1);
}
.field textarea { resize: vertical; min-height: 120px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.contact__form .btn--primary { margin-top: 8px; justify-content: center; padding: 16px; }

.contact__alt {
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
}
.contact__alt a { color: var(--photonic-soft); border-bottom: 1px solid var(--photonic-soft); }

.form-success {
  display: none;
  text-align: center;
  padding: 32px;
  border: 1px solid rgba(52, 211, 153, 0.3);
  border-radius: 6px;
  color: var(--emerald);
  background: rgba(52, 211, 153, 0.05);
}
.form-success svg { margin: 0 auto 12px; }
.form-success.visible { display: block; }

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
  background: var(--bg-void);
  border-top: 1px solid var(--line);
  padding: 64px 0 32px;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  align-items: flex-start;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.footer__brand {
  display: grid;
  gap: 16px;
}
.footer__tagline {
  font-size: 14px;
  color: var(--ink-muted);
  line-height: 1.6;
  max-width: 36ch;
}
.footer__col h5 {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 18px;
}
.footer__col ul {
  display: grid;
  gap: 10px;
}
.footer__col a {
  font-size: 14px;
  color: var(--ink-muted);
  transition: var(--t-fast);
}
.footer__col a:hover { color: var(--ink); }

.footer__legal {
  max-width: var(--maxw);
  margin: 64px auto 0;
  padding: 24px var(--gutter) 0;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* =========================================================
   REVEAL
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }
.reveal.d5 { transition-delay: .40s; }

/* sr-only */
.sr { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px) {
  .nav__links a { padding: 8px 8px; font-size: 10.5px; letter-spacing: 0.08em; }
}
@media (max-width: 1100px) {
  .problem-grid { grid-template-columns: repeat(3, 1fr); }
  .tech-features { grid-template-columns: repeat(3, 1fr); }
  .materials-grid { grid-template-columns: repeat(2, 1fr); }
  .material:nth-child(2) { border-right: 0; }
  .product--small { grid-column: span 6; }
  .footer__inner { grid-template-columns: 1.4fr 1fr 1fr; }
}

@media (max-width: 960px) {
  .nav__links, .nav__cta { display: none; }
  .hamburger { display: flex; }
}
@media (max-width: 820px) {
  .problem-grid {
    grid-template-columns: 1fr;
    border-bottom: 0;
  }
  .problem-stat {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .tech-features { grid-template-columns: 1fr; }
  .tech-feature { border-right: 0; border-bottom: 1px solid var(--line); }
  .step { grid-template-columns: 60px 1fr; gap: 16px; }
  .step__viz { display: none; }
  .product--featured { grid-template-columns: 1fr; }
  .product--featured .product__viz { border-right: 0; border-bottom: 1px solid var(--line); min-height: 240px; }
  .product--small { grid-column: span 12; }
  .materials-grid { grid-template-columns: 1fr; }
  .material { border-right: 0; border-bottom: 1px solid var(--line); }
  .team { grid-template-columns: 1fr; }
  .member { border-right: 0; border-bottom: 1px solid var(--line); }
  .footer__inner { grid-template-columns: 1fr; gap: 32px; }
  .field-row { grid-template-columns: 1fr; }
  .telemetry { grid-template-columns: 1fr 1fr; gap: 0; }
  .telemetry__cell { border-bottom: 1px solid var(--line); padding: 12px 0; border-right: 0; }
  .telemetry__cell:nth-child(odd) { border-right: 1px solid var(--line); padding-right: 16px; }
  .crystal-info { display: none; }
  .crystal-readout { font-size: 9px; }
  .hud__label { font-size: 9px; }
}

@media (max-width: 560px) {
  .hero { padding-top: 110px; }
  .hero__ctas { flex-direction: column; align-items: stretch; }
  .hero__ctas .btn { justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}