:root {
  --bg: #0f1c2e;
  --surface: #162032;
  --surface2: #1e2d42;
  --fg: #f0f4f8;
  --fg-muted: #8899aa;
  --accent: #f5a623;
  --accent-dim: #f5a62333;
  --tag-alert: #34d399;
  --tag-risk: #f87171;
  --tag-info: #60a5fa;
  --border: #1e3050;
}

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

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

h1, h2, h3, h4 { font-family: 'Instrument Serif', serif; font-weight: 400; }

.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

/* NAV */
.nav {
  padding: 20px 40px;
  border-bottom: 1px solid var(--border);
}
.nav-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-family: 'Instrument Serif', serif; font-size: 22px; color: var(--fg); }
.nav-tagline { font-size: 12px; color: var(--fg-muted); letter-spacing: 0.06em; }

/* HERO */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 40px 60px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.hero-headline {
  font-size: clamp(36px, 4vw, 56px);
  line-height: 1.1;
  color: var(--fg);
  margin-bottom: 20px;
}
.hero-sub {
  font-size: 17px;
  color: var(--fg-muted);
  margin-bottom: 28px;
  line-height: 1.7;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--tag-alert);
  font-weight: 500;
  border: 1px solid var(--tag-alert);
  border-radius: 20px;
  padding: 6px 14px;
}
.badge-dot {
  width: 7px; height: 7px;
  background: var(--tag-alert);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* SIGNAL FEED */
.signal-feed {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  font-size: 13px;
}
.feed-header {
  background: var(--surface2);
  padding: 10px 16px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
  border-bottom: 1px solid var(--border);
}
.feed-row {
  display: grid;
  grid-template-columns: 70px 80px 1fr;
  align-items: start;
  gap: 10px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.feed-row:last-child { border-bottom: none; }
.feed-time { color: var(--fg-muted); padding-top: 1px; }
.feed-tag {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  border-radius: 4px;
  display: inline-block;
  margin-top: 1px;
}
.tag-alert { background: #34d39922; color: var(--tag-alert); }
.tag-risk { background: #f8717122; color: var(--tag-risk); }
.tag-info { background: #60a5fa22; color: var(--tag-info); }
.feed-text { color: var(--fg); line-height: 1.4; }

/* HOW IT WORKS */
.how {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 40px;
  border-top: 1px solid var(--border);
}
.how-header { text-align: center; margin-bottom: 60px; }
.how-title {
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.2;
  max-width: 500px;
  margin: 0 auto;
}
.how-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  width: 260px;
  position: relative;
}
.step-num {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 12px;
}
.step-title {
  font-family: 'Instrument Serif', serif;
  font-size: 24px;
  margin-bottom: 12px;
  color: var(--fg);
}
.step-body { font-size: 14px; color: var(--fg-muted); line-height: 1.6; }
.step-connector {
  color: var(--border);
  padding: 0 20px;
}

/* SIGNALS */
.signals-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.signals-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.signals-title {
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.2;
  margin-bottom: 20px;
}
.signals-body { font-size: 15px; color: var(--fg-muted); line-height: 1.7; }
.signal-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.signal-item:last-child { border-bottom: none; }
.signal-icon {
  width: 40px; height: 40px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}
.signal-name { font-weight: 600; font-size: 15px; margin-bottom: 4px; color: var(--fg); }
.signal-desc { font-size: 13px; color: var(--fg-muted); }

/* DIFFERENTIATOR */
.diff {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 40px;
}
.diff-title {
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.2;
  margin-bottom: 48px;
  text-align: center;
}
.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.diff-col { padding: 40px; }
.diff-human { background: var(--surface); }
.diff-stratos { background: var(--surface2); }
.diff-col-header {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 20px;
}
.diff-col-header-stratos { color: var(--accent); }
.diff-list { list-style: none; }
.diff-list li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--fg-muted);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}
.diff-list li:last-child { border-bottom: none; }
.diff-list li::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--border);
  border-radius: 50%;
  flex-shrink: 0;
}
.diff-list-stratos li { color: var(--fg); }
.diff-list-stratos li::before { background: var(--accent); }

/* MANIFESTO */
.manifesto {
  border-top: 1px solid var(--border);
  padding: 80px 40px;
  text-align: center;
}
.manifesto-inner { max-width: 760px; margin: 0 auto; }
.manifesto-text {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(20px, 2.5vw, 30px);
  font-style: italic;
  line-height: 1.5;
  color: var(--fg);
}

/* FOOTER */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 40px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-logo { font-family: 'Instrument Serif', serif; font-size: 18px; color: var(--fg); display: block; margin-bottom: 4px; }
.footer-desc { font-size: 12px; color: var(--fg-muted); }
.footer-links { font-size: 12px; color: var(--fg-muted); }

/* MOBILE */
@media (max-width: 768px) {
  .hero { padding: 48px 24px 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-headline { font-size: 32px; }
  .how { padding: 48px 24px; }
  .how-steps { flex-direction: column; gap: 16px; }
  .step-connector { transform: rotate(90deg); padding: 0; }
  .step { width: 100%; }
  .signals-inner { grid-template-columns: 1fr; gap: 40px; padding: 48px 24px; }
  .diff-grid { grid-template-columns: 1fr; }
  .manifesto { padding: 48px 24px; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
  .nav { padding: 16px 24px; }
  .feed-row { grid-template-columns: 56px 70px 1fr; }
}