:root {
  --bg: #0A0E14;
  --surface: #111827;
  --border: #1F2937;
  --fg: #F9FAFB;
  --fg-muted: #9CA3AF;
  --fg-dim: #6B7280;
  --accent: #FF6B35;
  --accent-dim: rgba(255, 107, 53, 0.12);
  --font-head: 'Sora', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem 2rem;
  background: rgba(10, 14, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
}
.nav-logo {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--fg);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 8rem 2rem 6rem;
  overflow: hidden;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,107,53,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,107,53,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 860px;
  text-align: left;
}
.hero-label {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}
.hero-headline {
  font-family: var(--font-head);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 2rem;
}
.hero-accent { color: var(--accent); }
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--fg-muted);
  max-width: 620px;
  line-height: 1.7;
  margin-bottom: 3.5rem;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; }
.stat-number {
  font-family: var(--font-head);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--fg-dim);
  margin-top: 0.2rem;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* Sections Shared */
.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--fg);
  margin-bottom: 1rem;
}

/* Manifesto */
.manifesto {
  padding: 7rem 2rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.manifesto-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 4rem;
  align-items: start;
}
.manifesto-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  padding-top: 0.5rem;
}
.manifesto-headline {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--fg);
  margin-bottom: 2rem;
}
.manifesto-headline em { font-style: normal; color: var(--accent); }
.manifesto-body {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  max-width: 560px;
}

/* How */
.how { padding: 7rem 2rem; }
.how-inner { max-width: 1200px; margin: 0 auto; }
.how-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-top: 3rem;
  border: 1px solid var(--border);
}
.step { padding: 2.5rem; }
.step-num {
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  display: block;
  margin-bottom: 1.2rem;
}
.step-title {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 0.8rem;
}
.step-desc {
  font-size: 0.92rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* Stack */
.stack-section { padding: 7rem 2rem; border-top: 1px solid var(--border); }
.stack-inner { max-width: 1200px; margin: 0 auto; }
.stack-intro {
  font-size: 1.05rem;
  color: var(--fg-muted);
  margin-bottom: 3rem;
  max-width: 560px;
}
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.stack-card {
  background: var(--bg);
  padding: 2rem;
  transition: background 0.2s;
}
.stack-card:hover { background: var(--surface); }
.stack-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-dim);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 1.2rem;
}
.stack-card h4 {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 0.6rem;
}
.stack-card p {
  font-size: 0.875rem;
  color: var(--fg-dim);
  line-height: 1.6;
}

/* Proof */
.proof { padding: 7rem 2rem; border-top: 1px solid var(--border); }
.proof-inner { max-width: 1200px; margin: 0 auto; }
.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3rem;
  margin-top: 3rem;
}
.proof-item {}
.proof-stat {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.03em;
  display: block;
  margin-bottom: 0.6rem;
}
.proof-label {
  font-size: 0.875rem;
  color: var(--fg-dim);
  line-height: 1.6;
}

/* Closing */
.closing {
  padding: 8rem 2rem;
  border-top: 1px solid var(--border);
}
.closing-inner { max-width: 860px; margin: 0 auto; }
.closing-text {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--fg-muted);
  line-height: 1.8;
  margin-bottom: 2rem;
}
.closing-accent {
  font-family: var(--font-head);
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  font-weight: 600;
  color: var(--fg);
}

/* Footer */
.footer {
  padding: 2.5rem 2rem;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-logo {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--fg);
}
.footer-tagline {
  font-size: 0.85rem;
  color: var(--fg-dim);
}

/* Responsive */
@media (max-width: 900px) {
  .manifesto-inner { grid-template-columns: 1fr; gap: 2rem; }
  .how-steps { grid-template-columns: 1fr; }
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { gap: 1.5rem; }
  .stat-divider { display: none; }
}
@media (max-width: 600px) {
  .hero { padding: 7rem 1.5rem 4rem; }
  .manifesto, .how, .stack-section, .proof, .closing { padding: 4rem 1.5rem; }
  .stack-grid { grid-template-columns: 1fr; }
  .proof-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-inner { flex-direction: column; gap: 0.5rem; }
}