/* ═══════════════════════════════════════════════════════════════
   SYNAPSEBONE — styles.css
   Futuristic biotech aesthetic: glassmorphism + neural aesthetic
═══════════════════════════════════════════════════════════════ */

/* ── Variables ──────────────────────────────────────────────── */
:root {
  --black:    #05070A;
  --navy:     #0B1220;
  --navy-mid: #0F1A2E;
  --blue:     #3B82F6;
  --cyan:     #22D3EE;
  --white:    #F8FAFC;
  --white-60: rgba(248,250,252,0.6);
  --white-20: rgba(248,250,252,0.08);
  --white-10: rgba(248,250,252,0.05);
  --blue-glow: rgba(59,130,246,0.25);
  --cyan-glow: rgba(34,211,238,0.25);

  --font: 'Inter', system-ui, sans-serif;

  --nav-h: 72px;
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  background: var(--black);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

img, svg { display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }

/* ── Typography helpers ──────────────────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, var(--blue) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.body-text {
  color: var(--white-60);
  font-size: 1.0625rem;
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.text-center { text-align: center; }

/* ── Layout helpers ──────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}

/* ── Section labels & titles ─────────────────────────────────── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 1.25rem;
}

.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: var(--cyan);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  color: var(--white);
}

.section-sub {
  font-size: 1.0625rem;
  color: var(--white-60);
  max-width: 600px;
  margin: 0 auto 3.5rem;
  line-height: 1.75;
}

/* ── Glassmorphism card ──────────────────────────────────────── */
.glass-card {
  background: var(--white-10);
  border: 1px solid rgba(248,250,252,0.1);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.glass-card:hover {
  border-color: rgba(59,130,246,0.35);
  box-shadow: 0 0 40px var(--blue-glow);
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8125rem 1.875rem;
  border-radius: 50px;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  cursor: pointer;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: var(--black);
}

.btn-primary:hover {
  box-shadow: 0 0 30px rgba(59,130,246,0.5);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(248,250,252,0.25);
}

.btn-ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
  box-shadow: 0 0 20px var(--blue-glow);
  transform: translateY(-2px);
}

.btn-large { padding: 1rem 2.5rem; font-size: 1.0625rem; }
.btn-full { width: 100%; }

/* ── Scroll reveal ───────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }

/* ── Mesh backgrounds ────────────────────────────────────────── */
.mesh-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 30%, rgba(59,130,246,0.07) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 80% 70%, rgba(34,211,238,0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.mesh-bg-alt {
  background:
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(59,130,246,0.07) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(34,211,238,0.06) 0%, transparent 70%);
}

.section-technology > .container,
.section-investors > .container { position: relative; z-index: 1; }


/* ══════════════════════════════════════════════════════════════
   NAVBAR
══════════════════════════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  transition: background var(--transition), border-color var(--transition);
}

.navbar.scrolled {
  background: rgba(5,7,10,0.85);
  border-bottom: 1px solid rgba(248,250,252,0.08);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  flex-shrink: 0;
}

.logo-img {
  height: 42px;
  width: auto;
  display: block;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.5rem 0.875rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--white-60);
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover { color: var(--white); background: var(--white-10); }

.nav-link.nav-cta {
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: var(--black);
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
}

.nav-link.nav-cta:hover { box-shadow: 0 0 20px var(--blue-glow); background: var(--white-10); color: var(--white); }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
  border-radius: 8px;
  transition: background var(--transition);
}

.hamburger:hover { background: var(--white-10); }

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }


/* ══════════════════════════════════════════════════════════════
   HERO
══════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--black);
}

#neural-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.65;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 50% 50%, rgba(11,18,32,0.3) 0%, rgba(5,7,10,0.8) 100%);
  pointer-events: none;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: calc(var(--nav-h) + 2rem) 1.5rem 4rem;
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  background: rgba(59,130,246,0.12);
  border: 1px solid rgba(59,130,246,0.3);
  border-radius: 50px;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--cyan);
  margin-bottom: 2rem;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--cyan);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

.hero-title {
  font-size: clamp(2.75rem, 7vw, 5rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.1875rem);
  color: var(--white-60);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 4rem;
}

/* Hero stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  padding: 1.5rem 2.5rem;
  background: var(--white-10);
  border: 1px solid rgba(248,250,252,0.08);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  flex-wrap: wrap;
  justify-content: center;
}

.stat { text-align: center; }

.stat-value {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--white-60);
  margin-top: 0.25rem;
  white-space: nowrap;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(248,250,252,0.12);
  flex-shrink: 0;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 0.5;
  transition: opacity var(--transition);
}

.scroll-indicator:hover { opacity: 1; }

.scroll-dot {
  width: 28px;
  height: 44px;
  border: 1px solid rgba(248,250,252,0.3);
  border-radius: 14px;
  position: relative;
}

.scroll-dot::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--cyan);
  border-radius: 2px;
  animation: scroll-anim 1.8s ease-in-out infinite;
}

@keyframes scroll-anim {
  0% { top: 6px; opacity: 1; }
  100% { top: 24px; opacity: 0; }
}


/* ══════════════════════════════════════════════════════════════
   ABOUT
══════════════════════════════════════════════════════════════ */
.section-about { background: var(--navy); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-right {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.about-card {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.about-card-icon {
  width: 44px;
  height: 44px;
  color: var(--cyan);
}

.about-card-icon svg { width: 100%; height: 100%; }

.card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--white);
}

.card-text {
  font-size: 0.9375rem;
  color: var(--white-60);
  line-height: 1.7;
}


/* ══════════════════════════════════════════════════════════════
   TECHNOLOGY
══════════════════════════════════════════════════════════════ */
.section-technology { background: var(--black); }

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.tech-card {
  padding: 2rem;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform var(--transition);
}

.tech-card:hover { transform: translateY(-4px); }

.tech-card-glow {
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0.35;
  filter: blur(50px);
  transition: opacity var(--transition);
}

.tech-card:hover .tech-card-glow { opacity: 0.6; }
.glow-blue  { background: var(--blue); }
.glow-cyan  { background: var(--cyan); }
.glow-purple { background: #A78BFA; }

.tech-icon {
  width: 48px;
  height: 48px;
  color: var(--cyan);
}

.tech-icon svg { width: 100%; height: 100%; }

.tech-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
}

.tech-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.3;
}

.tech-text {
  font-size: 0.9375rem;
  color: var(--white-60);
  line-height: 1.7;
  flex: 1;
}

.tech-specs {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(248,250,252,0.08);
}

.tech-specs li {
  font-size: 0.8125rem;
  color: var(--white-60);
  padding-left: 1rem;
  position: relative;
}

.tech-specs li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 5px;
  background: var(--cyan);
  border-radius: 50%;
}


/* ══════════════════════════════════════════════════════════════
   RESEARCH
══════════════════════════════════════════════════════════════ */
.section-research { background: var(--navy); }

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(248,250,252,0.08);
  border: 1px solid rgba(248,250,252,0.08);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 3.5rem;
}

.stat-block {
  background: var(--navy-mid);
  padding: 2rem 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.stat-num {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.stat-desc {
  font-size: 0.8125rem;
  color: var(--white-60);
  line-height: 1.4;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}

.pillar-card {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.pillar-number {
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
}

.pillar-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--white);
}

.pillar-text {
  font-size: 0.9375rem;
  color: var(--white-60);
  line-height: 1.7;
}

/* Neural diagram */
.neural-diagram {
  text-align: center;
  padding: 2rem;
  background: var(--white-10);
  border: 1px solid rgba(248,250,252,0.08);
  border-radius: var(--radius);
}

.neural-diagram svg {
  max-width: 600px;
  width: 100%;
  margin: 0 auto 1rem;
}

.diagram-label {
  font-size: 0.8125rem;
  color: var(--white-60);
  font-style: italic;
}


/* ══════════════════════════════════════════════════════════════
   INVESTORS
══════════════════════════════════════════════════════════════ */
.section-investors { background: var(--black); }

.market-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.market-card {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.market-icon {
  width: 44px;
  height: 44px;
  color: var(--blue);
}

.market-icon svg { width: 100%; height: 100%; }

.market-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--white);
}

.market-text {
  font-size: 0.9375rem;
  color: var(--white-60);
  line-height: 1.7;
}

.investor-cta {
  text-align: center;
  padding: 3rem;
  background: linear-gradient(135deg, rgba(59,130,246,0.1), rgba(34,211,238,0.08));
  border: 1px solid rgba(59,130,246,0.25);
  border-radius: var(--radius);
}

.investor-cta-title {
  font-size: 1.625rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.investor-cta-sub {
  color: var(--white-60);
  margin-bottom: 2rem;
  font-size: 1rem;
}


/* ══════════════════════════════════════════════════════════════
   CONTACT
══════════════════════════════════════════════════════════════ */
.section-contact { background: var(--navy); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 3rem;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-info-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  color: var(--cyan);
  padding: 0.5rem;
  background: rgba(34,211,238,0.1);
  border-radius: 10px;
}

.contact-info-icon svg { width: 100%; height: 100%; }

.contact-info-label {
  font-size: 0.8125rem;
  color: var(--white-60);
  margin-bottom: 0.25rem;
}

.contact-info-value {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--white);
  transition: color var(--transition);
}

a.contact-info-value:hover { color: var(--cyan); }

.contact-note {
  padding: 1.25rem;
  font-size: 0.875rem;
  color: var(--white-60);
  line-height: 1.6;
}

/* Contact form */
.contact-form {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group { display: flex; flex-direction: column; gap: 0.375rem; }

.form-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--white-60);
}

.required { color: var(--blue); }
.optional { color: rgba(248,250,252,0.35); font-size: 0.8em; }

.form-input {
  background: rgba(5,7,10,0.6);
  border: 1px solid rgba(248,250,252,0.12);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--white);
  font-size: 0.9375rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder { color: rgba(248,250,252,0.3); }

.form-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}

.form-input.error { border-color: #F87171; }

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23F8FAFC' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-select option { background: var(--navy); }

.form-textarea {
  resize: vertical;
  min-height: 110px;
}

.form-error {
  font-size: 0.8125rem;
  color: #F87171;
  min-height: 1.1rem;
}

/* Submit button states */
#submitBtn { position: relative; overflow: hidden; }

.btn-success {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #10B981, #22D3EE);
  color: var(--black);
  font-weight: 700;
  opacity: 0;
  transition: opacity var(--transition);
  border-radius: 50px;
}

#submitBtn.sent .btn-success { opacity: 1; }
#submitBtn.sent .btn-text { opacity: 0; }

.form-disclaimer {
  font-size: 0.8125rem;
  color: rgba(248,250,252,0.35);
  text-align: center;
  line-height: 1.6;
}


/* ══════════════════════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════════════════════ */
.footer {
  background: var(--black);
  border-top: 1px solid rgba(248,250,252,0.06);
  padding: 3rem 0 2rem;
}

.footer-top {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.footer-logo { opacity: 0.9; }
.footer-logo:hover { opacity: 1; }

.footer-tagline {
  font-size: 0.875rem;
  color: var(--white-60);
}

.footer-mid { margin-bottom: 2rem; }

.footer-nav {
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.footer-link {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  color: var(--white-60);
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}

.footer-link:hover { color: var(--white); background: var(--white-10); }

.footer-linkedin {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  border: 1px solid rgba(248,250,252,0.15);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--white-60);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.footer-linkedin svg { width: 16px; height: 16px; flex-shrink: 0; }

.footer-linkedin:hover {
  color: var(--white);
  border-color: #0A66C2;
  background: rgba(10,102,194,0.12);
}

.footer-bottom {
  border-top: 1px solid rgba(248,250,252,0.06);
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-copy {
  font-size: 0.875rem;
  color: rgba(248,250,252,0.4);
}

.footer-disclaimer {
  font-size: 0.8125rem;
  color: rgba(248,250,252,0.25);
  line-height: 1.6;
  max-width: 700px;
}


/* ══════════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .tech-grid,
  .pillars-grid,
  .market-grid {
    grid-template-columns: 1fr 1fr;
  }

  .stats-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 4rem 0; }

  /* Mobile nav */
  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(5,7,10,0.97);
    border-bottom: 1px solid rgba(248,250,252,0.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.5rem 1.5rem;
    gap: 0.25rem;
    transform: translateY(-120%);
    transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
    pointer-events: none;
  }

  .nav-links.open {
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-link { padding: 0.875rem 1rem; border-radius: var(--radius-sm); }
  .nav-link.nav-cta { text-align: center; margin-top: 0.5rem; border-radius: var(--radius-sm); }

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }

  /* Tech / pillars / market */
  .tech-grid,
  .pillars-grid,
  .market-grid {
    grid-template-columns: 1fr;
  }

  /* Stats */
  .stats-row { grid-template-columns: 1fr 1fr; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; }

  /* Hero */
  .hero-stats { gap: 1.5rem; padding: 1.25rem 1.5rem; }
  .stat-divider { display: none; }
  .stat-value { font-size: 1rem; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2.25rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; max-width: 280px; }

  .stats-row { grid-template-columns: 1fr; }

  .contact-form { padding: 1.5rem; }

  .investor-cta { padding: 2rem 1.25rem; }
}

/* ── Accessibility ─────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  #neural-canvas { display: none; }
  .reveal { opacity: 1; transform: none; }
}