:root {
  --bg: #09090b;
  --surface: #18181b;
  --surface-2: #27272a;
  --fg: #fafafa;
  --fg-muted: #a1a1aa;
  --fg-subtle: #52525b;
  --accent: #f59e0b;
  --accent-dim: rgba(245, 158, 11, 0.12);
  --border: rgba(255,255,255,0.07);
}

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

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

/* NAV */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
  background: rgba(9,9,11,0.8);
  backdrop-filter: blur(16px);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-logo {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--fg);
}
.nav-badge {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(245,158,11,0.2);
  padding: 3px 8px;
  border-radius: 20px;
}

/* HERO */
.hero {
  padding: 140px 32px 100px;
  max-width: 1100px;
  margin: 0 auto;
}
.hero-label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(52px, 8vw, 88px);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -3px;
  color: var(--fg);
  margin-bottom: 28px;
}
.hero-sub {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 64px;
}
.hero-flow {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex-wrap: wrap;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: var(--surface);
}
.flow-step {
  flex: 1;
  min-width: 200px;
  padding: 28px 28px 24px;
  border-right: 1px solid var(--border);
}
.flow-step:last-child { border-right: none; }
.flow-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #09090b;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}
.flow-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--fg);
  margin-bottom: 6px;
}
.flow-desc {
  font-size: 13px;
  color: var(--fg-muted);
  line-height: 1.5;
}
.flow-arrow {
  display: flex;
  align-items: center;
  padding: 0 4px;
  color: var(--fg-subtle);
  flex-shrink: 0;
  align-self: center;
}

/* SECTIONS */
.section-header {
  margin-bottom: 52px;
}
.section-tag {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1.5px;
}

/* HOW IT WORKS */
.how {
  padding: 100px 32px;
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}
.stack-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: var(--border);
}
.stack-card {
  background: var(--surface);
  padding: 36px 32px;
}
.stack-card--wide {
  grid-column: 1 / -1;
}
.stack-card-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.stack-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 12px;
  line-height: 1.3;
}
.stack-card p {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}
.stack-meta {
  font-size: 12px;
  color: var(--fg-subtle);
  font-family: 'DM Mono', monospace;
}

/* FEATURES */
.features {
  padding: 100px 32px;
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.feature-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.feature-item:last-child { border-bottom: none; }
.feature-num {
  font-family: 'Playfair Display', serif;
  font-size: 42px;
  font-weight: 700;
  color: var(--fg-subtle);
  line-height: 1;
  padding-top: 4px;
}
.feature-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 10px;
}
.feature-body p {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 580px;
}

/* PRICING MODEL */
.pricing-model {
  padding: 100px 32px;
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.pricing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px 28px;
}
.pricing-card-tag {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.pricing-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 10px;
}
.pricing-card p {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}
.pricing-stat {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
}
.pricing-unit {
  font-size: 14px;
  font-weight: 400;
  color: var(--fg-muted);
  margin-left: 6px;
}

/* CLOSING */
.closing {
  padding: 120px 32px 100px;
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}
.closing-inner {
  max-width: 700px;
}
.closing-label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.closing-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -2px;
  color: var(--fg);
  margin-bottom: 28px;
}
.closing-sub {
  font-size: 17px;
  color: var(--fg-muted);
  line-height: 1.75;
}

/* FOOTER */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
}
.footer-logo {
  font-size: 16px;
  font-weight: 600;
  color: var(--fg);
}
.footer-tagline {
  font-size: 14px;
  color: var(--fg-muted);
  flex: 1;
}
.footer-copy {
  font-size: 12px;
  color: var(--fg-subtle);
}

/* MOBILE */
@media (max-width: 768px) {
  .hero { padding: 120px 24px 80px; }
  .hero-flow { flex-direction: column; }
  .flow-step { border-right: none; border-bottom: 1px solid var(--border); }
  .flow-step:last-child { border-bottom: none; }
  .flow-arrow { display: none; }
  .how, .features, .pricing-model { padding: 72px 24px; }
  .stack-grid { grid-template-columns: 1fr; }
  .pricing-cards { grid-template-columns: 1fr; }
  .feature-item { grid-template-columns: 48px 1fr; gap: 16px; }
  .closing { padding: 80px 24px; }
  .footer-inner { flex-wrap: wrap; }
}