:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a2235;
  --fg-primary: #e8edf5;
  --fg-secondary: #8b95a8;
  --fg-muted: #5a6478;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.12);
  --accent-glow: rgba(0, 212, 170, 0.3);
  --border: rgba(255, 255, 255, 0.06);
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* === HERO === */
.hero {
  min-height: 90vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 6rem 8% 4rem;
  position: relative;
  overflow: hidden;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(0, 212, 170, 0.2);
  padding: 0.4rem 1rem;
  border-radius: 2px;
  margin-bottom: 2rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: var(--fg-primary);
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--fg-secondary);
  max-width: 520px;
  line-height: 1.7;
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 400px;
}

.scan-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--accent-glow);
}

.ring-1 {
  width: 200px;
  height: 200px;
  animation: pulse-ring 3s ease-in-out infinite;
}

.ring-2 {
  width: 320px;
  height: 320px;
  animation: pulse-ring 3s ease-in-out infinite 0.6s;
}

.ring-3 {
  width: 440px;
  height: 440px;
  animation: pulse-ring 3s ease-in-out infinite 1.2s;
}

.scan-dot {
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 30px var(--accent-glow), 0 0 60px rgba(0, 212, 170, 0.15);
  z-index: 2;
}

@keyframes pulse-ring {
  0%, 100% { opacity: 0.3; transform: scale(0.95); }
  50% { opacity: 0.7; transform: scale(1.05); }
}

/* === STATS === */
.stats {
  padding: 4rem 8%;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-card {
  text-align: center;
  padding: 2rem 1rem;
}

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--fg-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* === HOW === */
.how {
  padding: 6rem 8%;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.how-header {
  margin-bottom: 4rem;
}

.how-header h2,
.verticals-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--fg-primary);
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  align-items: start;
  padding: 2.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: border-color 0.3s ease;
}

.step:hover {
  border-color: rgba(0, 212, 170, 0.2);
}

.step-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--fg-muted);
  line-height: 1;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  color: var(--fg-primary);
}

.step-content p {
  color: var(--fg-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* === VERTICALS === */
.verticals {
  padding: 6rem 8%;
  background: var(--bg-secondary);
}

.verticals-header {
  margin-bottom: 3.5rem;
}

.verticals-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.vertical-card {
  padding: 2.5rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.vertical-card:hover {
  border-color: rgba(0, 212, 170, 0.2);
  transform: translateY(-2px);
}

.vertical-icon {
  font-size: 1.6rem;
  color: var(--accent);
  margin-bottom: 1rem;
  display: block;
}

.vertical-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--fg-primary);
}

.vertical-card p {
  color: var(--fg-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* === CLOSING === */
.closing {
  padding: 8rem 8%;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.closing-content {
  max-width: 680px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  line-height: 1.25;
}

.closing p {
  color: var(--fg-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.closing-accent {
  color: var(--accent) !important;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.9rem !important;
  letter-spacing: 0.05em;
  margin-top: 2rem !important;
}

/* === FOOTER === */
.site-footer {
  padding: 3rem 8%;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg-primary);
  letter-spacing: 0.02em;
}

.footer-meta {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 4rem 6% 2rem;
  }

  .hero-visual {
    min-height: 250px;
    margin-top: 2rem;
  }

  .ring-3 {
    width: 300px;
    height: 300px;
  }

  .ring-2 {
    width: 220px;
    height: 220px;
  }

  .ring-1 {
    width: 140px;
    height: 140px;
  }

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

  .step {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .step-num {
    font-size: 1.6rem;
  }

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

  .footer-inner {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .stat-number {
    font-size: 2.2rem;
  }

  .hero {
    padding: 3rem 5% 2rem;
  }

  .how,
  .verticals,
  .closing {
    padding-left: 5%;
    padding-right: 5%;
  }
}

/* === SITE NAV === */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 8%;
  border-bottom: 1px solid var(--border);
  background: var(--bg-primary);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg-primary);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-brand span { color: var(--accent); }

.site-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav .nav-links a {
  font-size: 0.9rem;
  color: var(--fg-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.site-nav .nav-links a:hover { color: var(--fg-primary); }

.nav-cta-btn {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--accent);
  color: #0a0e17 !important;
  padding: 0.55rem 1.4rem;
  border-radius: 3px;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: opacity 0.2s;
}

.nav-cta-btn:hover { opacity: 0.85; }

/* === CTA BUTTONS === */
.hero-ctas {
  display: flex;
  gap: 1rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.btn-primary {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  background: var(--accent);
  color: #0a0e17;
  padding: 0.85rem 2rem;
  border-radius: 3px;
  text-decoration: none;
  transition: opacity 0.2s;
  display: inline-block;
}

.btn-primary:hover { opacity: 0.85; }

.btn-secondary {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--fg-primary);
  background: transparent;
  border: 1px solid var(--border);
  padding: 0.85rem 2rem;
  border-radius: 3px;
  text-decoration: none;
  transition: border-color 0.2s;
  display: inline-block;
}

.btn-secondary:hover { border-color: rgba(255,255,255,0.2); }

@media (max-width: 640px) {
  .site-nav { padding: 1rem 5%; }
  .hero-ctas { flex-direction: column; }
  .btn-primary, .btn-secondary { text-align: center; }
}