:root {
  --bg: #0B1120;
  --bg-2: #0F1829;
  --surface: #162030;
  --border: #1E2D42;
  --accent: #38BDF8;
  --accent-dim: rgba(56, 189, 248, 0.12);
  --text: #F0F4F8;
  --text-dim: #7A8FA6;
  --green: #34D399;
  --orange: #FB923C;
  --dim: #4A5F78;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  --max-w: 1100px;
  --radius: 8px;
}

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

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

/* ── NAV ── */
.nav {
  border-bottom: 1px solid var(--border);
  background: rgba(11, 17, 32, 0.9);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--text);
}
.nav-logo-dot { color: var(--accent); }
.nav-tagline {
  font-size: 13px;
  color: var(--text-dim);
  border-left: 1px solid var(--border);
  padding-left: 16px;
}

/* ── HERO ── */
.hero {
  position: relative;
  padding: 100px 32px 80px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; }
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.4;
}
.hero-glow {
  position: absolute;
  top: -80px; left: -80px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(56,189,248,0.08) 0%, transparent 70%);
}
.hero-inner {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
}
.hero-label {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(56,189,248,0.2);
  display: inline-block;
  padding: 5px 12px;
  border-radius: 20px;
  margin-bottom: 28px;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(44px, 7vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 24px;
  max-width: 680px;
}
.hero-sub {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 560px;
  margin-bottom: 56px;
  line-height: 1.7;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
}
.hero-stat {
  padding: 0 40px 0 0;
}
.hero-stat:first-child { padding-left: 0; }
.hero-stat-value {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  display: block;
}
.hero-stat-label {
  font-size: 13px;
  color: var(--text-dim);
}
.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  margin-right: 40px;
}

/* ── HOW IT WORKS ── */
.how-it-works {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 80px 32px;
}
.how-it-works-inner { max-width: var(--max-w); margin: 0 auto; }
.section-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.section-heading {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1.15;
  margin-bottom: 56px;
}
.steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
}
.step {
  flex: 1;
  padding: 0 24px;
}
.step:first-child { padding-left: 0; }
.step-num {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(56,189,248,0.2);
  display: inline-block;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 16px;
}
.step-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.step-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.65;
}
.step-arrow {
  width: 32px;
  height: 1px;
  background: var(--border);
  flex-shrink: 0;
  margin-top: 28px;
  position: relative;
}
.step-arrow::after {
  content: '›';
  position: absolute;
  right: -4px;
  top: -10px;
  color: var(--dim);
  font-size: 18px;
}

/* ── SIGNAL FEED ── */
.signal-feed { padding: 80px 32px; }
.signal-feed-inner { max-width: var(--max-w); margin: 0 auto; }
.signal-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 20px;
}
.signal-window {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 680px;
}
.signal-window-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.signal-dots { display: flex; gap: 6px; }
.dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.dot-red { background: #FF5F57; }
.dot-yellow { background: #FFBD2E; }
.dot-green { background: #28CA41; }
.signal-window-title {
  font-family: 'Space Grotesk', monospace;
  font-size: 12px;
  color: var(--text-dim);
}
.signal-body {
  padding: 20px;
  font-family: 'Space Grotesk', monospace;
  font-size: 13px;
  line-height: 1.8;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.signal-line { color: var(--text-dim); }
.signal-time { color: var(--dim); margin-right: 8px; }
.signal-success { color: var(--green); }
.signal-success .signal-time { color: var(--green); opacity: 0.7; }
.signal-dim { color: var(--text-dim); }

/* ── CAPABILITIES ── */
.capabilities {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: 80px 32px;
}
.capabilities-inner { max-width: var(--max-w); margin: 0 auto; }
.cap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}
.cap-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.cap-icon {
  width: 36px; height: 36px;
  background: var(--accent-dim);
  border: 1px solid rgba(56,189,248,0.2);
  border-radius: 6px;
  margin-bottom: 16px;
  position: relative;
}
.cap-icon::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 16px; height: 16px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0.8;
}
.cap-icon-green { background: rgba(52, 211, 153, 0.1); border-color: rgba(52, 211, 153, 0.2); }
.cap-icon-green::after { background: var(--green); }
.cap-icon-blue { background: rgba(56, 189, 248, 0.1); border-color: rgba(56, 189, 248, 0.2); }
.cap-icon-orange { background: rgba(251, 146, 60, 0.1); border-color: rgba(251, 146, 60, 0.2); }
.cap-icon-orange::after { background: var(--orange); }
.cap-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.cap-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.65;
}
.cap-note {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 14px;
  color: var(--text-dim);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.cap-note-icon {
  width: 16px; height: 16px;
  background: var(--accent-dim);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ── CLOSING ── */
.closing {
  padding: 100px 32px;
  text-align: center;
}
.closing-inner { max-width: 680px; margin: 0 auto; }
.closing-badge {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  background: var(--surface);
  border: 1px solid var(--border);
  display: inline-block;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 24px;
}
.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
  line-height: 1.1;
  margin-bottom: 20px;
}
.closing-body {
  font-size: 17px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ── FOOTER ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 32px;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
}
.footer-dot { color: var(--accent); }
.footer-tagline {
  font-size: 13px;
  color: var(--text-dim);
  border-left: 1px solid var(--border);
  padding-left: 12px;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .hero { padding: 60px 20px 56px; }
  .hero-stats { flex-wrap: wrap; gap: 24px; }
  .hero-stat-divider { display: none; }
  .steps { flex-direction: column; gap: 24px; }
  .step-arrow { display: none; }
  .step { padding: 0; }
  .cap-grid { grid-template-columns: 1fr; }
  .closing { padding: 64px 20px; }
  .how-it-works, .capabilities { padding: 56px 20px; }
  .signal-feed { padding: 56px 20px; }
  .footer { padding: 20px; }
}