:root {
  /* Colors */
  --color-navy: #0B1F3A;
  --color-navy-mid: #163A5F;
  --color-slate: #4A5568;
  --color-steel: #8B9BB4;
  --color-off-white: #F4F6F8;
  --color-white: #FFFFFF;
  --color-accent-gold: #C4A35A;
  --color-link: #2B6CB0;
  
  /* Extended Tokens aligned with Dark Blue & Gold schema */
  --color-corsican-blue: var(--color-navy-mid);
  --color-deep-corsican: var(--color-navy);
  --color-copper: var(--color-accent-gold);
  --color-corsican-tint: rgba(196, 163, 90, 0.2);
  --color-hairline: #D5D8DC;
  --color-text-main: #111111;
  --color-text-muted: #4A5568;
  
  /* Typography */
  --font-heading: 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

/* Reset & Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  color: var(--color-slate);
  background-color: var(--color-off-white);
  line-height: 1.6;
  font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-navy);
  font-weight: 700;
  margin-bottom: 1rem;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color 150ms ease;
}

a:hover, a:focus {
  color: var(--color-navy-mid);
}

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--color-link);
  outline-offset: 2px;
}

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

.section {
  padding: 5rem 0;
}

.section-bg-white {
  background-color: var(--color-white);
}

.section-bg-navy {
  background-color: var(--color-navy);
  color: var(--color-white);
}

.section-bg-navy h1, .section-bg-navy h2, .section-bg-navy h3 {
  color: var(--color-white);
}

/* Header & Nav */
.site-header {
  background-color: var(--color-navy);
  color: var(--color-white);
  border-bottom: 2px solid var(--color-accent-gold);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
}

.logo:hover {
  color: var(--color-off-white);
}

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

.nav-links a {
  color: var(--color-white);
  font-weight: 600;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-accent-gold);
  color: var(--color-navy);
  padding: 8px;
  z-index: 101;
}

.skip-link:focus {
  top: 0;
}

/* Hero Section */
.hero {
  background-color: var(--color-navy);
  color: var(--color-white);
  padding: 8rem 0;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: var(--color-white);
}

.hero p {
  font-size: 1.25rem;
  max-width: 800px;
  margin: 0 auto 3rem auto;
  color: var(--color-off-white);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  transition: all 150ms ease;
  text-align: center;
}

.btn-primary {
  background-color: var(--color-accent-gold);
  color: var(--color-navy);
  border: 2px solid var(--color-accent-gold);
}

.btn-primary:hover {
  background-color: #d6b876;
  color: var(--color-navy);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-accent-gold);
  border: 2px solid var(--color-accent-gold);
}

.btn-secondary:hover {
  background-color: rgba(196, 163, 90, 0.1);
  color: var(--color-accent-gold);
}

.cta-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* Trust Strip */
.trust-strip {
  background-color: var(--color-navy-mid);
  color: var(--color-white);
  padding: 1.5rem 0;
}

.trust-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  text-align: center;
}

/* Cards (Suite Teaser) */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-steel);
  padding: 2rem;
  border-radius: 4px;
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.card h3 {
  color: var(--color-navy-mid);
}

/* Footer */
.site-footer {
  background-color: var(--color-navy);
  color: var(--color-steel);
  padding: 4rem 0 2rem 0;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  color: var(--color-white);
}

.footer-col a {
  color: var(--color-steel);
  display: block;
  margin-bottom: 0.5rem;
}

.footer-col a:hover {
  color: var(--color-white);
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid var(--color-navy-mid);
  padding-top: 2rem;
}

.unclassified-badge {
  display: inline-block;
  background-color: var(--color-navy-mid);
  color: var(--color-white);
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-size: 0.8rem;
  margin-top: 1rem;
  font-weight: 600;
  border: 1px solid var(--color-steel);
}

/* Company Profile & Architecture Components */
.dual-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 2rem 0;
}

.profile-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-steel);
  border-top: 4px solid var(--color-accent-gold);
  border-radius: 6px;
  padding: 2.25rem;
  box-shadow: 0 4px 12px rgba(11, 31, 58, 0.05);
  display: flex;
  flex-direction: column;
}

.profile-card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--color-navy);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.callout-banner {
  background-color: var(--color-navy);
  color: var(--color-white);
  border-left: 5px solid var(--color-accent-gold);
  border-radius: 4px;
  padding: 2rem;
  margin: 2.5rem 0;
  box-shadow: 0 4px 16px rgba(11, 31, 58, 0.12);
}

.callout-banner p {
  color: var(--color-off-white);
  font-size: 1.15rem;
  line-height: 1.7;
  margin-bottom: 0;
}

.callout-banner strong {
  color: #FFFFFF;
}

.spoke-item-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-steel);
  border-radius: 6px;
  padding: 1.75rem;
  transition: transform 150ms ease, box-shadow 150ms ease;
  display: flex;
  flex-direction: column;
}

.spoke-item-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(11, 31, 58, 0.08);
}

.spoke-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.spoke-pill {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.25rem 0.6rem;
  border-radius: 12px;
  background-color: rgba(196, 163, 90, 0.18);
  color: var(--color-navy-mid);
  border: 1px solid var(--color-accent-gold);
}

.audience-card {
  background: var(--color-white);
  border: 1px solid var(--color-steel);
  border-radius: 6px;
  padding: 2rem;
  position: relative;
}

.audience-card h4 {
  font-size: 1.2rem;
  color: var(--color-navy);
  margin-bottom: 0.75rem;
}

.lifecycle-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0;
}

.lifecycle-step {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  background-color: var(--color-navy-mid);
  color: var(--color-white);
  border: 1px solid var(--color-steel);
}

/* Utilities */
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-4 { margin-bottom: 4rem; }

/* Responsive */
@media (max-width: 768px) {
  .grid-2, .dual-card-grid, .semantic-gap-grid, .tier-grid, .boundary-grid {
    grid-template-columns: 1fr !important;
    gap: 1.5rem;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--color-navy);
    flex-direction: column;
    padding: 1rem 2rem;
    gap: 1rem;
    border-bottom: 1px solid var(--color-steel);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .cta-group {
    flex-direction: column;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
}

/* Felix Brand Utilities & Presentation Components */
.gold-rule,
.copper-rule {
  width: 80px;
  height: 3px;
  background-color: var(--color-accent-gold);
  margin: 1rem auto 2rem auto;
  border: none;
  border-radius: 2px;
}

.gold-rule-left,
.copper-rule-left {
  width: 80px;
  height: 3px;
  background-color: var(--color-accent-gold);
  margin: 0.75rem 0 1.5rem 0;
  border: none;
  border-radius: 2px;
}

.diagram-well,
.corsican-well {
  background-color: #F8F9FA;
  border: 1px solid var(--color-steel);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 4px 16px rgba(11, 31, 58, 0.06);
  margin: 2rem 0;
}

.diagram-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 6px;
  border: 1px solid var(--color-steel);
  background-color: #FFFFFF;
}

.diagram-caption {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--color-slate);
  text-align: center;
  line-height: 1.5;
}

/* Semantic Gap: Why Chatbots & Redrawing Fail */
.semantic-gap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
}

.gap-card {
  background: var(--color-white);
  border: 1px solid var(--color-steel);
  border-radius: 8px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.gap-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(11, 31, 58, 0.08);
}

.gap-card.failing {
  border-top: 4px solid #EF4444;
}

.gap-card.governed {
  border: 2px solid var(--color-navy-mid);
  border-top: 4px solid var(--color-accent-gold);
  background: #FDFCFA;
  box-shadow: 0 6px 20px rgba(11, 31, 58, 0.1);
}

.gap-card-header {
  margin-bottom: 1rem;
}

.gap-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 0.35rem;
}

.gap-card-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.badge-danger {
  background-color: #FEE2E2;
  color: #991B1B;
}

.badge-governed {
  background-color: rgba(196, 163, 90, 0.18);
  color: var(--color-navy-mid);
  border: 1px solid var(--color-accent-gold);
}

/* 5-Point Technical Verification Grid */
.verification-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.verification-card {
  background: var(--color-white);
  border: 1px solid var(--color-steel);
  border-left: 4px solid var(--color-accent-gold);
  border-radius: 6px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(11, 31, 58, 0.04);
}

.verification-card h4 {
  color: var(--color-navy);
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.verification-metric {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-navy);
  background: rgba(196, 163, 90, 0.18);
  border: 1px solid var(--color-accent-gold);
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  margin-bottom: 0.75rem;
}

/* Split ASOT Boundary Cards */
.boundary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 2rem 0;
}

.boundary-card {
  background: var(--color-white);
  border: 1px solid var(--color-steel);
  border-radius: 8px;
  padding: 2rem;
  position: relative;
}

.boundary-card.ingest-bound {
  border-top: 4px solid var(--color-navy-mid);
}

.boundary-card.models-bound {
  border-top: 4px solid var(--color-accent-gold);
}

.boundary-path {
  font-family: 'Courier New', monospace;
  background: #F1F5F9;
  color: var(--color-navy-mid);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 700;
  display: inline-block;
  margin-bottom: 0.75rem;
}

/* 3-Tier Engagement Cards */
.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
}

.tier-card {
  background: var(--color-white);
  border: 1px solid var(--color-steel);
  border-radius: 8px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.tier-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(11, 31, 58, 0.08);
}

.tier-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-navy-mid);
  background: rgba(196, 163, 90, 0.18);
  border: 1px solid var(--color-accent-gold);
  padding: 0.25rem 0.6rem;
  border-radius: 12px;
  display: inline-block;
  margin-bottom: 0.75rem;
  align-self: flex-start;
}