:root {
  --color-bg: #05080F;
  --color-surface: #0B1120;
  --color-accent: #2563EB;
  --color-accent-light: #7DD3FC;
  --color-text: #F0F4FF;
  --color-text-muted: #8B9CB3;
  --color-border: #1C2A40;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  color: var(--color-text);
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(5, 8, 15, 0.8);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: all 0.3s ease;
}

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

.logo {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-text);
}

.logo-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: 50%;
  margin-left: 0.5rem;
  vertical-align: middle;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.3s ease;
  font-family: var(--font-body);
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent);
}

/* Eyebrow Labels */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: block;
}

/* Section Header */
.section-header {
  margin-bottom: 3rem;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, #05080F 0%, #0B1120 100%);
}

#starfield {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 2rem;
}

.hero-headline {
  margin: 1.5rem 0;
  color: var(--color-text);
}

.hero-subhead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 4px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  border: 2px solid;
  cursor: pointer;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.btn-primary {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
}

.btn-primary:hover {
  background-color: #1d4ed8;
  border-color: #1d4ed8;
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.3);
}

.btn-ghost {
  background-color: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-ghost:hover {
  background-color: var(--color-accent);
  color: white;
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.3);
}

/* Research Divisions */
.research-divisions {
  padding: 6rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.research-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 2rem;
  border-radius: 4px;
  transition: all 0.3s ease;
  position: relative;
}

.research-card:hover {
  border-left: 3px solid var(--color-accent);
  border-color: var(--color-border);
}

.card-index {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}

.card-title {
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.card-description {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Events Section */
.events {
  padding: 6rem 0;
  background-color: rgba(11, 17, 32, 0.5);
}

.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.event-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 2rem;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.event-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.1);
}

/* About Strip */
.about-strip {
  padding: 6rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

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

.about-quote {
  font-size: 1.5rem;
  color: var(--color-accent-light);
  font-style: italic;
  font-family: var(--font-display);
  line-height: 1.8;
}

.about-text {
  color: var(--color-text-muted);
  line-height: 1.8;
  font-size: 1rem;
}

/* Ventures Hero */
.ventures-hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #05080F 0%, #0B1120 100%);
  background-image: 
    radial-gradient(1px 1px at 20% 30%, rgba(37, 99, 235, 0.1), rgba(37, 99, 235, 0)),
    radial-gradient(1px 1px at 60% 70%, rgba(37, 99, 235, 0.1), rgba(37, 99, 235, 0)),
    radial-gradient(1px 1px at 50% 50%, rgba(37, 99, 235, 0.1), rgba(37, 99, 235, 0));
  background-size: 200% 200%;
  background-position: 0% 0%;
  background-attachment: fixed;
  overflow: hidden;
}

/* What We Do */
.what-we-do {
  padding: 6rem 0;
}

.focus-rows {
  display: grid;
  gap: 3rem;
}

.focus-row {
  padding: 2rem 0;
  border-bottom: 1px solid var(--color-border);
}

.focus-row:last-child {
  border-bottom: none;
}

.focus-title {
  margin-bottom: 1rem;
  color: var(--color-text);
}

.focus-description {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.8;
}

/* Portfolio Focus */
.portfolio-focus {
  padding: 6rem 0;
  background-color: rgba(11, 17, 32, 0.5);
}

.tags-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.sector-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--color-accent);
  border-radius: 20px;
  color: var(--color-accent);
  background-color: transparent;
  transition: all 0.3s ease;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.sector-tag:hover {
  background-color: var(--color-accent);
  color: white;
}

/* Network */
.network {
  padding: 6rem 0;
}

.network-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.network-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 2.5rem;
  border-radius: 4px;
}

.network-title {
  margin-bottom: 1rem;
  color: var(--color-text);
}

.network-description {
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* Contact CTA */
.contact-cta {
  padding: 6rem 0;
  background-color: rgba(37, 99, 235, 0.05);
  border-top: 1px solid var(--color-accent);
  border-bottom: 1px solid var(--color-accent);
  text-align: center;
}

.cta-headline {
  margin-bottom: 1rem;
}

.cta-description {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  font-size: 1.1rem;
  line-height: 1.8;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Footer */
.footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-bottom: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--color-border);
}

.footer-logo {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-tagline {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.3s ease;
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    gap: 1rem;
  }

  .nav-links a {
    font-size: 0.85rem;
  }

  .hero-ctas {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .research-grid {
    grid-template-columns: 1fr;
  }

  .events-grid {
    grid-template-columns: 1fr;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .network-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-headline {
    font-size: 2rem;
  }

  .eyebrow {
    font-size: 0.7rem;
  }

  .about-quote {
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1.5rem;
  }

  .nav-container {
    padding: 1rem 1.5rem;
    flex-direction: column;
    gap: 1rem;
  }

  .nav-links {
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
  }

  .logo {
    font-size: 0.9rem;
  }

  .footer-links {
    grid-template-columns: 1fr;
  }
}