:root {
  --bg: #0C1220;
  --bg-surface: #101828;
  --bg-card: #131E30;
  --fg: #E8EDF5;
  --fg-muted: #8A9AB5;
  --accent: #00E5FF;
  --accent-dim: rgba(0, 229, 255, 0.1);
  --border: rgba(255, 255, 255, 0.06);
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
}

*, *::before, *::after { 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;
}

/* NAV */
.nav { border-bottom: 1px solid var(--border); padding: 20px 48px; }
.nav-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; gap: 16px; }
.nav-logo { font-family: var(--font-display); font-weight: 700; font-size: 18px; letter-spacing: -0.5px; color: var(--fg); }
.nav-tag { font-size: 13px; color: var(--fg-muted); letter-spacing: 0.5px; text-transform: uppercase; }

/* HERO */
.hero { padding: 96px 48px 80px; max-width: 1200px; margin: 0 auto; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.hero-eyebrow { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); margin-bottom: 20px; font-weight: 500; }
.hero-headline { font-family: var(--font-display); font-size: clamp(32px, 4vw, 52px); font-weight: 700; line-height: 1.1; letter-spacing: -1.5px; color: var(--fg); margin-bottom: 24px; }
.hero-sub { font-size: 17px; color: var(--fg-muted); line-height: 1.7; max-width: 480px; margin-bottom: 48px; }
.hero-stats { display: flex; gap: 40px; }
.hero-stat { display: flex; flex-direction: column; gap: 4px; }
.stat-value { font-family: var(--font-display); font-size: 28px; font-weight: 700; color: var(--accent); letter-spacing: -1px; }
.stat-label { font-size: 12px; color: var(--fg-muted); text-transform: uppercase; letter-spacing: 0.5px; }

/* HERO VISUAL */
.hero-visual { position: relative; width: 100%; height: 340px; background: var(--bg-surface); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.grid-lines { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px); background-size: 40px 40px; }
.connection-lines { position: absolute; inset: 0; width: 100%; height: 100%; }
.node { position: absolute; display: flex; align-items: center; gap: 8px; }
.node-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--fg-muted); }
.node-label { font-size: 11px; font-weight: 600; color: var(--fg-muted); letter-spacing: 0.5px; font-family: var(--font-display); }
.node-1 { top: 40px; left: 40px; }
.node-2 { top: 110px; left: 40px; }
.node-3 { bottom: 80px; left: 40px; }
.node-4 { top: 40px; right: 40px; }
.node-5 { top: 110px; right: 40px; }
.agent-core { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.agent-core-inner { background: var(--accent); color: #000; padding: 10px 20px; border-radius: 8px; font-family: var(--font-display); font-weight: 700; font-size: 13px; display: flex; align-items: center; gap: 8px; position: relative; }
.agent-pulse { position: absolute; inset: -4px; border-radius: 12px; border: 1px solid var(--accent); opacity: 0.4; animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { transform: scale(1); opacity: 0.4; } 50% { transform: scale(1.08); opacity: 0.1; } }

/* SECTIONS */
.section-label { font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); font-weight: 600; margin-bottom: 16px; }
.section-title { font-family: var(--font-display); font-size: clamp(26px, 3vw, 40px); font-weight: 700; letter-spacing: -1px; line-height: 1.15; color: var(--fg); margin-bottom: 48px; }

/* DIFFERENTIATORS */
.differentiators { padding: 80px 48px; max-width: 1200px; margin: 0 auto; }
.diff-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.diff-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 32px; }
.diff-icon { width: 40px; height: 40px; border-radius: 8px; background: var(--accent-dim); display: flex; align-items: center; justify-content: center; color: var(--accent); margin-bottom: 20px; }
.diff-card h3 { font-family: var(--font-display); font-size: 18px; font-weight: 600; margin-bottom: 12px; color: var(--fg); }
.diff-card p { font-size: 14px; color: var(--fg-muted); line-height: 1.65; }

/* ARCHITECTURE */
.architecture { padding: 80px 48px; background: var(--bg-surface); }
.arch-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.arch-desc { font-size: 16px; color: var(--fg-muted); line-height: 1.7; margin-bottom: 20px; }
.arch-visual { display: flex; flex-direction: column; gap: 0; align-items: stretch; }
.layer { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 20px 24px; }
.layer-label { font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--fg-muted); font-weight: 600; display: block; margin-bottom: 12px; }
.layer-icons { display: flex; flex-wrap: wrap; gap: 8px; }
.app-icon { background: var(--bg-surface); border: 1px solid var(--border); border-radius: 6px; padding: 6px 12px; font-size: 12px; font-weight: 600; font-family: var(--font-display); color: var(--fg); }
.layer-arrow { display: flex; justify-content: center; padding: 8px 0; }
.layer-apex .apex-core { display: flex; flex-direction: column; align-items: center; gap: 4px; text-align: center; }
.apex-core span:first-child { font-family: var(--font-display); font-size: 18px; font-weight: 700; color: var(--accent); }
.apex-sub { font-size: 11px; color: var(--fg-muted); letter-spacing: 0.5px; }
.outcome-list { display: flex; flex-direction: column; gap: 6px; }
.outcome-list span { font-size: 13px; color: var(--fg-muted); }

/* CHAIN */
.chain { padding: 80px 48px; max-width: 1200px; margin: 0 auto; }
.chain-steps { display: flex; align-items: flex-start; gap: 0; }
.chain-step { flex: 1; }
.step-num { font-family: var(--font-display); font-size: 48px; font-weight: 700; color: var(--accent); opacity: 0.25; margin-bottom: 16px; letter-spacing: -2px; }
.chain-step h3 { font-family: var(--font-display); font-size: 20px; font-weight: 600; margin-bottom: 12px; color: var(--fg); }
.chain-step p { font-size: 14px; color: var(--fg-muted); line-height: 1.65; }
.chain-connector { display: flex; align-items: center; padding-top: 60px; }

/* CLOSING */
.closing { padding: 100px 48px; background: var(--bg-surface); }
.closing-inner { max-width: 800px; margin: 0 auto; text-align: center; }
.closing h2 { font-family: var(--font-display); font-size: clamp(28px, 4vw, 48px); font-weight: 700; letter-spacing: -1.5px; line-height: 1.1; color: var(--fg); margin-bottom: 28px; }
.closing p { font-size: 18px; color: var(--fg-muted); line-height: 1.7; max-width: 600px; margin: 0 auto; }

/* FOOTER */
.footer { border-top: 1px solid var(--border); padding: 48px; }
.footer-inner { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; }
.footer-logo { font-family: var(--font-display); font-weight: 700; font-size: 16px; display: block; margin-bottom: 8px; }
.footer-brand p { font-size: 13px; color: var(--fg-muted); }
.footer-note p { font-size: 14px; color: var(--fg-muted); max-width: 400px; text-align: right; }

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-grid, .arch-inner { grid-template-columns: 1fr; gap: 40px; }
  .diff-grid { grid-template-columns: 1fr; }
  .hero { padding: 60px 24px 48px; }
  .differentiators, .architecture, .chain { padding: 60px 24px; }
  .closing { padding: 72px 24px; }
  .nav { padding: 16px 24px; }
  .footer-inner { flex-direction: column; gap: 24px; align-items: flex-start; }
  .footer-note p { text-align: left; }
  .chain-steps { flex-direction: column; }
  .chain-connector { transform: rotate(90deg); padding: 16px 0; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
}

@media (max-width: 600px) {
  .hero-visual { height: 240px; }
}