:root {
  --bg-primary: #09090b;
  --bg-secondary: #111113;
  --bg-card: #18181b;
  --fg-primary: #fafafa;
  --fg-secondary: #a1a1aa;
  --fg-muted: #71717a;
  --accent: #a78bfa;
  --accent-glow: rgba(167, 139, 250, 0.15);
  --accent-bright: #c4b5fd;
  --border: #27272a;
  --gradient-start: #a78bfa;
  --gradient-end: #818cf8;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Landing nav */
.landing-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 2rem;
  border-bottom: 1px solid rgba(39,39,42,0.6);
  background: rgba(9, 9, 11, 0.80);
  backdrop-filter: blur(12px);
}

.landing-nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand-text {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-cta-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1.1rem;
  border-radius: 100px;
  border: 1px solid rgba(167,139,250,0.4);
  background: rgba(167,139,250,0.08);
  color: var(--accent-bright);
  font-size: 0.82rem;
  font-family: var(--font-display);
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s;
}
.nav-cta-pill:hover {
  background: rgba(167,139,250,0.18);
  border-color: var(--accent);
}

/* CTA button */
.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 2rem;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #fff;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  position: relative;
  z-index: 1;
  margin-top: 2.5rem;
  box-shadow: 0 0 32px rgba(167,139,250,0.35);
  transition: box-shadow 0.25s, transform 0.2s;
}
.hero-cta:hover {
  box-shadow: 0 0 48px rgba(167,139,250,0.55);
  transform: translateY(-2px);
}
.hero-cta svg { flex-shrink: 0; }

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 8rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(129, 140, 248, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--fg-secondary);
  margin-bottom: 2.5rem;
  position: relative;
  z-index: 1;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-family: var(--font-display);
  background: var(--bg-secondary);
}

.hero-badge span {
  color: var(--accent);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  max-width: 900px;
  position: relative;
  z-index: 1;
  margin-bottom: 1.5rem;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--fg-secondary);
  max-width: 580px;
  line-height: 1.7;
  position: relative;
  z-index: 1;
  font-weight: 300;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-top: 4rem;
  position: relative;
  z-index: 1;
}

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

.hero-stat .number {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-bright);
  display: block;
}

.hero-stat .label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.25rem;
}

/* Pipeline Section */
.pipeline {
  padding: 8rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.pipeline h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  line-height: 1.1;
}

.pipeline-desc {
  color: var(--fg-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin-bottom: 4rem;
  font-weight: 300;
}

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

.pipeline-step {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  position: relative;
  transition: border-color 0.3s, transform 0.3s;
}

.pipeline-step:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.step-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--bg-card);
  -webkit-text-stroke: 1px var(--border);
  position: absolute;
  top: 1rem;
  right: 1.5rem;
}

.pipeline-step h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--fg-primary);
}

.pipeline-step p {
  color: var(--fg-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  font-weight: 300;
}

/* Specs Section */
.specs {
  padding: 6rem 2rem 8rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.specs-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.specs h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 4rem;
  line-height: 1.1;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.spec-cell {
  background: var(--bg-primary);
  padding: 2rem;
}

.spec-cell h4 {
  font-family: var(--font-display);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
  margin-bottom: 0.5rem;
}

.spec-cell .value {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--fg-primary);
}

.spec-cell .detail {
  font-size: 0.85rem;
  color: var(--fg-secondary);
  margin-top: 0.25rem;
  font-weight: 300;
}

/* Use Cases */
.usecases {
  padding: 8rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.usecases h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 4rem;
  line-height: 1.1;
}

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

.usecase-item {
  padding: 2.5rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--bg-secondary);
  transition: border-color 0.3s;
}

.usecase-item:hover {
  border-color: rgba(167, 139, 250, 0.3);
}

.usecase-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  display: block;
}

.usecase-item h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.usecase-item p {
  color: var(--fg-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  font-weight: 300;
}

/* Closing */
.closing {
  padding: 8rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.closing::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  max-width: 700px;
  margin: 0 auto 1.5rem;
  position: relative;
  z-index: 1;
}

.closing p {
  color: var(--fg-secondary);
  font-size: 1.15rem;
  max-width: 500px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  font-weight: 300;
  line-height: 1.7;
}

/* Footer */
.footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--fg-primary);
}

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

/* Mobile */
@media (max-width: 768px) {
  .pipeline-steps {
    grid-template-columns: 1fr;
  }
  .specs-grid {
    grid-template-columns: 1fr;
  }
  .usecase-list {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    flex-direction: column;
    gap: 1.5rem;
  }
  .hero {
    padding: 4rem 1.5rem 3rem;
  }
  .footer-inner {
    flex-direction: column;
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .pipeline-step, .usecase-item, .spec-cell {
    padding: 1.5rem;
  }
}