:root {
  --bg: #04060f;
  --bg-2: #070b18;
  --fg: #e8eaf0;
  --fg-muted: #8b90a7;
  --accent: #00d4c8;
  --accent-2: #0096b7;
  --accent-glow: rgba(0, 212, 200, 0.15);
  --alert: #ff9f43;
  --border: rgba(255,255,255,0.07);
  --card: rgba(255,255,255,0.03);
  --card-border: rgba(255,255,255,0.06);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', sans-serif;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 0;
  background: linear-gradient(to bottom, rgba(4,6,15,0.9) 0%, transparent 100%);
}
.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.5px;
  color: var(--fg);
}
.nav-tagline {
  font-size: 12px;
  color: var(--fg-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
}

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 32px 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px; left: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,212,200,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-grid {
  max-width: 1160px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.hero-eyebrow {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-headline {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(42px, 5.5vw, 76px);
  line-height: 1.05;
  letter-spacing: -2px;
  color: var(--fg);
  margin-bottom: 24px;
}
.hero-body {
  font-size: 17px;
  color: var(--fg-muted);
  line-height: 1.65;
  max-width: 460px;
}

/* SIGNAL VIZ */
.signal-viz {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 50% 45%, rgba(0,150,180,0.12) 0%, transparent 60%);
  border-radius: 50%;
}
.viz-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid;
}
.viz-ring-1 { width: 320px; height: 320px; border-color: rgba(0,212,200,0.25); }
.viz-ring-2 { width: 240px; height: 240px; border-color: rgba(0,212,200,0.4); }
.viz-ring-3 { width: 160px; height: 160px; border-color: rgba(0,212,200,0.6); }
.viz-core {
  position: absolute;
  width: 80px; height: 80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,212,200,0.3) 0%, rgba(0,212,200,0.05) 100%);
  border: 1px solid rgba(0,212,200,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.viz-label {
  font-family: 'Syne', sans-serif;
  font-size: 10px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.3;
  letter-spacing: 0.05em;
}
.viz-spike {
  position: absolute;
  width: 1px;
  height: 60px;
  background: linear-gradient(to top, rgba(0,212,200,0.6) 0%, transparent 100%);
  transform-origin: bottom center;
}
.viz-spike-1 { transform: rotate(-30deg) translateY(-140px); }
.viz-spike-2 { transform: rotate(80deg) translateY(-140px); }
.viz-spike-3 { transform: rotate(170deg) translateY(-140px); }
.viz-data {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 16px;
  background: rgba(7,11,24,0.9);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 20px;
  backdrop-filter: blur(12px);
  min-width: 320px;
  justify-content: space-between;
}
.data-row { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.data-key { font-size: 9px; color: var(--fg-muted); letter-spacing: 0.1em; text-transform: uppercase; font-weight: 500; }
.data-val { font-family: 'Syne', sans-serif; font-size: 16px; font-weight: 700; color: var(--fg); }
.data-unit { font-size: 11px; color: var(--fg-muted); }
.data-row-accent .data-val { color: var(--accent); }

/* SIGNAL SECTION */
.signal { padding: 100px 32px; background: var(--bg-2); }
.signal-inner { max-width: 1160px; margin: 0 auto; }
.signal-header { max-width: 640px; margin-bottom: 72px; }
.signal-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(30px, 4vw, 50px);
  letter-spacing: -1px;
  margin-bottom: 20px;
  line-height: 1.15;
}
.signal-body { font-size: 16px; color: var(--fg-muted); line-height: 1.7; }
.signal-columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.signal-col { padding: 28px; background: var(--card); border: 1px solid var(--card-border); border-radius: 16px; }
.signal-icon { color: var(--accent); margin-bottom: 16px; }
.signal-col-title { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 16px; margin-bottom: 10px; }
.signal-col-body { font-size: 14px; color: var(--fg-muted); line-height: 1.65; }

/* FEATURES */
.features { padding: 100px 32px; }
.features-inner { max-width: 1160px; margin: 0 auto; }
.features-eyebrow { font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); font-weight: 600; margin-bottom: 16px; }
.features-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(30px, 4vw, 52px);
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 64px;
}
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 20px; overflow: hidden; }
.feature-card { padding: 40px 36px; background: var(--card); }
.feature-num { font-family: 'Syne', sans-serif; font-size: 11px; color: var(--accent); font-weight: 700; letter-spacing: 0.1em; display: block; margin-bottom: 16px; }
.feature-title { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 17px; margin-bottom: 12px; }
.feature-body { font-size: 14px; color: var(--fg-muted); line-height: 1.65; }

/* FLOW */
.flow { padding: 100px 32px; background: var(--bg-2); }
.flow-inner { max-width: 1160px; margin: 0 auto; }
.flow-title { font-family: 'Syne', sans-serif; font-weight: 700; font-size: clamp(28px, 3.5vw, 44px); letter-spacing: -1px; margin-bottom: 60px; text-align: center; }
.flow-steps { display: flex; align-items: center; gap: 24px; }
.flow-step { flex: 1; }
.flow-step-num { font-family: 'Syne', sans-serif; font-size: 11px; font-weight: 700; color: var(--accent); letter-spacing: 0.1em; margin-bottom: 12px; }
.flow-step-title { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 15px; margin-bottom: 10px; }
.flow-step-body { font-size: 13px; color: var(--fg-muted); line-height: 1.65; }
.flow-arrow { color: var(--fg-muted); flex-shrink: 0; }

/* OUTCOMES */
.outcomes { padding: 100px 32px; }
.outcomes-inner { max-width: 1160px; margin: 0 auto; }
.outcomes-header { margin-bottom: 64px; }
.outcomes-eyebrow { font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); font-weight: 600; margin-bottom: 16px; }
.outcomes-title { font-family: 'Syne', sans-serif; font-weight: 700; font-size: clamp(28px, 4vw, 50px); letter-spacing: -1px; line-height: 1.15; }
.outcomes-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.outcome-card { padding: 36px 32px; background: var(--card); border: 1px solid var(--card-border); border-radius: 16px; display: flex; flex-direction: column; gap: 14px; }
.outcome-icon { color: var(--accent); }
.outcome-title { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 16px; }
.outcome-body { font-size: 14px; color: var(--fg-muted); line-height: 1.65; }

/* CLOSING */
.closing { padding: 120px 32px; position: relative; overflow: hidden; }
.closing-inner { max-width: 760px; margin: 0 auto; text-align: center; position: relative; z-index: 1; }
.closing-glow { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 600px; height: 300px; background: radial-gradient(ellipse, rgba(0,212,200,0.08) 0%, transparent 70%); pointer-events: none; }
.closing-title { font-family: 'Syne', sans-serif; font-weight: 800; font-size: clamp(28px, 4vw, 52px); letter-spacing: -1.5px; line-height: 1.15; margin-bottom: 28px; }
.closing-body { font-size: 17px; color: var(--fg-muted); line-height: 1.7; }

/* FOOTER */
.footer { padding: 48px 32px; border-top: 1px solid var(--border); }
.footer-inner { max-width: 1160px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: 8px; }
.footer-logo { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 18px; letter-spacing: -0.5px; }
.footer-tagline { font-size: 12px; color: var(--fg-muted); letter-spacing: 0.08em; text-transform: uppercase; }
.footer-copy { font-size: 12px; color: var(--fg-muted); margin-top: 8px; }

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 60px; }
  .hero-right { display: none; }
  .signal-columns { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .outcomes-grid { grid-template-columns: 1fr; }
  .flow-steps { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); }
}
@media (max-width: 600px) {
  .hero { padding: 100px 20px 60px; }
  .signal, .features, .flow, .outcomes, .closing { padding: 60px 20px; }
  .hero-headline { font-size: 36px; }
  .nav-inner { padding: 0 20px; }
}