:root {
  --bg: #0d1b2a;
  --bg-secondary: #162032;
  --fg: #f0ede6;
  --fg-muted: #8a9bb5;
  --accent: #00d4aa;
  --accent-glow: rgba(0, 212, 170, 0.15);
  --alert: #ff5c5c;
  --cream: #faf9f6;
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

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

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

/* NAV */
.nav {
  padding: 1.25rem 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--cream);
}
.nav-badge {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.2rem 0.7rem;
  border-radius: 100px;
}

/* HERO */
.hero {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 2rem 5rem;
}

.hero-radar {
  position: relative;
  width: 260px;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.radar-sweep {
  position: absolute;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, transparent 0deg, rgba(0,212,170,0.25) 30deg, transparent 60deg);
  animation: sweep 3s linear infinite;
}

.radar-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0,212,170,0.15);
}
.ring-1 { width: 180px; height: 180px; }
.ring-2 { width: 120px; height: 120px; }
.ring-3 { width: 60px; height: 60px; border-color: rgba(0,212,170,0.3); }

.radar-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 16px var(--accent), 0 0 32px rgba(0,212,170,0.4);
}

@keyframes sweep {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-content {
  max-width: 560px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.05;
  color: var(--cream);
  letter-spacing: -0.03em;
  margin-bottom: 1.2rem;
}
.hero-title em {
  color: var(--accent);
  font-style: italic;
}

.hero-lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 480px;
}

.hero-ping {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1.2rem;
  background: rgba(0,212,170,0.08);
  border: 1px solid rgba(0,212,170,0.2);
  border-radius: 100px;
  width: fit-content;
}

.ping-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.ping-text {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* MECHANICS */
.mechanics {
  background: var(--bg-secondary);
  padding: 5rem 2rem;
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.mechanics-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 40px 1fr 40px 1fr;
  align-items: start;
  gap: 0;
}

.step {
  padding: 1.5rem;
}
.step-number {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.step-icon {
  color: var(--fg-muted);
  margin-bottom: 0.8rem;
}
.step h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--cream);
  margin-bottom: 0.5rem;
}
.step p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

.step-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding-top: 2.5rem;
}
.step-connector::after {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: rgba(255,255,255,0.12);
}

/* FEATURES */
.features {
  padding: 6rem 2rem;
}
.features-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.feature-head {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 4rem;
}
.feature-head h2 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--cream);
  margin-bottom: 0.8rem;
}
.feature-head p {
  color: var(--fg-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
}
.feature-card {
  background: var(--bg-secondary);
  padding: 2.5rem;
  border: 1px solid rgba(255,255,255,0.04);
}
.feature-metric {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--accent);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 0.3rem;
}
.feature-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
  margin-bottom: 1rem;
}
.feature-desc {
  font-size: 0.92rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* SHARED */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
  padding: 0.85rem 1.75rem;
  border-radius: 10px;
  text-decoration: none;
  font-size: 0.95rem;
  transition: opacity 0.2s, transform 0.15s;
  width: fit-content;
  margin-top: 1.5rem;
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }

/* CLOSING */
.closing {
  padding: 7rem 2rem;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.04);
}
.closing-inner {
  max-width: 600px;
  margin: 0 auto;
}
.closing-quote {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--cream);
  line-height: 1.25;
  margin-bottom: 1.5rem;
  font-style: italic;
}
.closing-sub {
  color: var(--fg-muted);
  font-size: 1rem;
  line-height: 1.7;
}

/* FOOTER */
.footer {
  padding: 2rem;
  border-top: 1px solid rgba(255,255,255,0.04);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--cream);
  font-size: 1rem;
}
.footer-tagline {
  font-size: 0.82rem;
  color: var(--fg-muted);
}

/* MOBILE */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 4rem 1.5rem 3rem;
    gap: 2.5rem;
    text-align: center;
  }
  .hero-radar {
    margin: 0 auto;
    width: 200px;
    height: 200px;
  }
  .radar-sweep { width: 180px; height: 180px; }
  .ring-1 { width: 140px; height: 140px; }
  .ring-2 { width: 90px; height: 90px; }
  .ring-3 { width: 45px; height: 45px; }
  .hero-ping { margin: 0 auto; }
  .hero-lede { margin-left: auto; margin-right: auto; }

  .mechanics-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .step-connector { display: none; }
  .mechanics { padding: 4rem 1.5rem; }

  .feature-grid {
    grid-template-columns: 1fr;
  }
  .features { padding: 4rem 1.5rem; }

  .closing { padding: 5rem 1.5rem; }
}