:root {
  --bg: #0F0F14;
  --bg-raised: #161620;
  --fg: #F5F0E8;
  --fg-muted: rgba(245, 240, 232, 0.5);
  --amber: #F5A623;
  --amber-dim: rgba(245, 166, 35, 0.15);
  --amber-mid: rgba(245, 166, 35, 0.4);
  --grid-line: rgba(245, 166, 35, 0.08);
  --font-display: 'Syne', sans-serif;
  --font-body: 'Source Serif 4', Georgia, serif;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

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

/* HERO */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  padding: 8rem 6rem 6rem;
  min-height: 90vh;
  align-items: center;
}

.wordmark {
  font-family: var(--font-display);
  font-size: clamp(4rem, 8vw, 9rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 0.9;
  color: var(--fg);
  margin-bottom: 2rem;
}

.tagline {
  font-family: var(--font-body);
  font-size: clamp(1.1rem, 1.8vw, 1.5rem);
  font-weight: 300;
  font-style: italic;
  color: var(--fg-muted);
  line-height: 1.5;
  margin-bottom: 3rem;
}

.hero-meta { display: flex; align-items: center; gap: 0.75rem; }

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

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(245,166,35,0.5); }
  50% { box-shadow: 0 0 0 6px rgba(245,166,35,0); }
}

.status-text {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--amber);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Signal Grid */
.signal-grid {
  width: 100%;
  aspect-ratio: 1;
  max-width: 460px;
  position: relative;
  background: var(--bg-raised);
  border: 1px solid var(--grid-line);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 2rem;
}

.signal-grid::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 38px 38px;
}

.signal-node {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--amber);
  border-radius: 50%;
  animation: signal-float var(--dur, 3s) ease-in-out infinite var(--delay, 0s);
}

@keyframes signal-float {
  0% { transform: translate(0, 0) scale(1); opacity: 0.3; }
  50% { transform: translate(var(--tx, 10px), var(--ty, -10px)) scale(2); opacity: 0.9; }
  100% { transform: translate(0, 0) scale(1); opacity: 0.3; }
}

.signal-ring {
  position: absolute;
  border: 1px solid var(--amber-mid);
  border-radius: 50%;
  animation: ring-expand 4s ease-out infinite;
  pointer-events: none;
}

@keyframes ring-expand {
  0% { transform: scale(0.05); opacity: 0.5; }
  100% { transform: scale(1); opacity: 0; }
}

/* Bid Stream */
.bid-stream {
  background: var(--bg-raised);
  border: 1px solid var(--grid-line);
  border-radius: 4px;
  padding: 1.5rem;
}

.bid-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 1rem;
}

.bid-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--grid-line);
  font-family: var(--font-display);
  font-size: 0.8rem;
}

.bid-row:last-child { border-bottom: none; }

.bid-signal {
  color: var(--amber);
  font-size: 1rem;
  line-height: 1;
  animation: blink 0.8s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

.bid-channel { flex: 1; color: var(--fg-muted); font-weight: 600; }
.bid-value { color: var(--fg); font-weight: 700; }
.bid-cpa { color: var(--amber); font-size: 0.7rem; }

/* MANIFESTO */
.manifesto {
  padding: 4rem 6rem;
  border-top: 1px solid var(--grid-line);
  border-bottom: 1px solid var(--grid-line);
}

.manifesto p {
  font-family: var(--font-body);
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  font-style: italic;
  font-weight: 300;
  color: var(--fg-muted);
  max-width: 780px;
  line-height: 1.75;
}

/* HOW */
.how { padding: 6rem; }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.8vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 3rem;
  letter-spacing: -0.02em;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.step {
  padding: 2rem;
  border: 1px solid var(--grid-line);
  border-radius: 4px;
  background: var(--bg-raised);
  transition: border-color 0.3s ease;
}

.step:hover { border-color: var(--amber-mid); }

.step-num {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--amber);
  margin-bottom: 1.5rem;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.step-content p {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* CAPABILITIES */
.capabilities {
  padding: 6rem;
  background: var(--bg-raised);
}

.cap-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

.cap-card {
  padding: 2.5rem 2rem;
  border: 1px solid var(--grid-line);
  background: var(--bg);
  border-radius: 4px;
  transition: border-color 0.3s ease;
}

.cap-card:hover { border-color: var(--amber-mid); }

.cap-icon { margin-bottom: 1.5rem; }

.cap-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.cap-card p {
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* CLOSING */
.closing { padding: 8rem 6rem; }

.closing-inner { max-width: 720px; }

.closing-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 1.5rem;
}

.closing-inner p {
  font-family: var(--font-body);
  font-size: 1.15rem;
  color: var(--fg-muted);
  font-style: italic;
  margin-bottom: 4rem;
  line-height: 1.7;
}

.closing-stat {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
}

.stat-val {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  color: var(--amber);
  letter-spacing: -0.04em;
}

.stat-label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* FOOTER */
footer {
  border-top: 1px solid var(--grid-line);
  padding: 2.5rem 6rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
}

.footer-copy {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--fg-muted);
  font-style: italic;
  max-width: 400px;
  text-align: right;
}

/* Responsive */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 5rem 2rem 4rem;
    min-height: auto;
    gap: 3rem;
  }

  .signal-grid { max-width: 320px; margin: 0 auto 2rem; }
  .hero-right { width: 100%; }

  .manifesto { padding: 3rem 2rem; }
  .how { padding: 4rem 2rem; }
  .capabilities { padding: 4rem 2rem; }
  .closing { padding: 5rem 2rem; }

  .steps { grid-template-columns: 1fr; }
  .cap-grid { grid-template-columns: 1fr; }

  footer { padding: 2rem; }
  .footer-inner { flex-direction: column; gap: 0.75rem; align-items: flex-start; }
  .footer-copy { text-align: left; }
}