:root {
  --bg: #0d1b2a;
  --bg-alt: #0a1520;
  --fg: #e8eaf0;
  --fg-muted: #8a94a6;
  --accent: #f59e0b;
  --accent-dim: rgba(245,158,11,0.12);
  --border: rgba(255,255,255,0.07);
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

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

/* ─── Navigation ─── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 18px 0;
  background: rgba(13,27,42,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.02em;
}
.nav-badge {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid rgba(245,158,11,0.2);
}

/* ─── Section commons ─── */
.section-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}
.section-eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.section-headline {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--fg);
  margin-bottom: 56px;
}

/* ─── Hero ─── */
.hero {
  padding: 80px 0 100px;
  background: var(--bg);
}
.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5.5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--fg);
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
}
.hero-stat {
  color: var(--accent);
}
.hero-stat-label {
  font-size: 0.55em;
  color: var(--fg-muted);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.65;
  max-width: 440px;
}

/* Agent visualization */
.agent-viz {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.agent-node {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.agent-source { border-left: 3px solid #4ade80; }
.agent-core {
  border: 1px solid rgba(245,158,11,0.3);
  background: rgba(245,158,11,0.05);
  border-radius: 12px;
  padding: 20px;
  align-items: center;
  text-align: center;
}
.agent-output { border-left: 3px solid var(--accent); }
.agent-node-label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--fg);
}
.agent-node-sub {
  font-size: 0.72rem;
  color: var(--fg-muted);
}
.agent-core-icon {
  font-size: 1.4rem;
  color: var(--accent);
  margin-bottom: 4px;
}
.agent-core-label {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  color: var(--accent);
}
.agent-arrow {
  display: flex;
  align-items: center;
  padding: 8px 0 8px 16px;
  gap: 8px;
}
.agent-arrow-line {
  width: 2px;
  height: 20px;
  background: linear-gradient(to bottom, #4ade80, var(--accent));
  border-radius: 2px;
}
.agent-arrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ─── How it Works ─── */
.howitworks {
  padding: 100px 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px 64px;
}
.step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  align-items: start;
}
.step-number {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  opacity: 0.5;
}
.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 8px;
}
.step-content p {
  font-size: 0.92rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ─── Features ─── */
.features {
  padding: 100px 0;
  background: var(--bg);
}
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 28px;
}
.feature-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 28px 32px;
  transition: border-color 0.2s;
}
.feature-card:hover {
  border-color: rgba(245,158,11,0.3);
}
.feature-icon {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 14px;
}
.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ─── Outcomes ─── */
.outcomes {
  padding: 80px 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.outcomes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 32px;
}
.outcome {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.outcome-stat {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}
.outcome-desc {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.4;
}

/* ─── Closing ─── */
.closing {
  padding: 120px 0;
  background: var(--bg);
  text-align: center;
}
.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 20px;
}
.closing-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.65;
}
.closing-meta {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
}
.closing-meta span {
  font-size: 1.5rem;
}

/* ─── Footer ─── */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  color: var(--fg);
}
.footer-tagline {
  font-size: 0.82rem;
  color: var(--fg-muted);
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-right { order: -1; }
  .agent-viz { max-width: 320px; }
  .steps { grid-template-columns: 1fr; gap: 36px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .outcomes-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 480px) {
  .feature-grid { grid-template-columns: 1fr; }
  .outcomes-grid { grid-template-columns: 1fr 1fr; }
  .section-inner { padding: 0 20px; }
  .hero-inner { padding: 0 20px; }
}