:root {
  --bg: #0c0c0c;
  --surface: #141414;
  --surface-2: #1c1c1c;
  --fg: #e8e3d8;
  --fg-2: #8a8578;
  --accent: #f0a500;
  --accent-dim: #f0a50022;
  --border: #2a2a2a;
  --mono: 'DM Mono', monospace;
  --display: 'Syne', sans-serif;
  --body: 'DM Sans', sans-serif;
}

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

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

/* ─── Navigation ─── */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
}
.nav-logo {
  font-family: var(--display);
  font-weight: 800;
  font-size: 20px;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.nav-tagline {
  font-family: var(--body);
  font-size: 13px;
  color: var(--fg-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ─── Hero ─── */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 100px 48px 80px;
  min-height: 600px;
}
.hero-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero-headline {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 28px;
}
.hero-lede {
  font-size: 18px;
  line-height: 1.65;
  color: var(--fg-2);
  max-width: 480px;
}

/* Assembly diagram */
.assembly-diagram {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  max-width: 420px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ad-bar {
  position: absolute;
  border-radius: 4px;
  background: var(--accent);
  opacity: 0.12;
}
.ad-bar-1 { width: 80%; height: 2px; top: 35%; left: 10%; }
.ad-bar-2 { width: 60%; height: 2px; top: 50%; left: 20%; }
.ad-bar-3 { width: 40%; height: 2px; top: 65%; left: 30%; }
.ad-core {
  position: relative;
  z-index: 2;
  text-align: center;
}
.core-inner {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  margin: 0 auto 10px;
}
.core-ring {
  position: absolute;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  opacity: 0.25;
  animation: ring-pulse 3s ease-in-out infinite;
}
@keyframes ring-pulse {
  0%, 100% { transform: scale(1); opacity: 0.25; }
  50% { transform: scale(1.08); opacity: 0.1; }
}
.core-center {
  font-family: var(--display);
  font-weight: 800;
  font-size: 28px;
  color: var(--accent);
  line-height: 1;
}
.core-label {
  font-size: 12px;
  color: var(--fg-2);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.ad-node {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 3;
}
.node-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.node-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-2);
  letter-spacing: 0.04em;
}
.ad-node-1 { top: 18%; left: 12%; }
.ad-node-2 { top: 55%; right: 8%; }
.ad-node-3 { bottom: 20%; left: 30%; }
.ad-connector {
  position: absolute;
  width: 180px;
  height: 1px;
  background: var(--accent);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-20deg);
  opacity: 0.15;
  z-index: 1;
}

/* ─── Proof ─── */
.proof {
  padding: 48px 48px;
}
.proof-rule {
  height: 1px;
  background: var(--border);
}
.proof-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 0;
  padding: 48px 0;
}
.proof-stat {
  text-align: center;
  padding: 0 24px;
}
.stat-value {
  font-family: var(--display);
  font-weight: 800;
  font-size: 52px;
  color: var(--fg);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.03em;
}
.stat-plus {
  font-size: 32px;
  color: var(--accent);
}
.stat-pct {
  font-size: 32px;
  color: var(--accent);
}
.stat-label {
  font-size: 12px;
  color: var(--fg-2);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--mono);
}
.proof-divider {
  width: 1px;
  height: 60px;
  background: var(--border);
}

/* ─── Features ─── */
.features {
  padding: 80px 48px;
  background: var(--surface);
}
.features-heading {
  font-family: var(--display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin-bottom: 48px;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}
.feature-card {
  background: var(--surface-2);
  padding: 40px 36px;
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: border-color 0.2s;
}
.feature-card:hover {
  border-color: var(--accent);
}
.feature-icon {
  color: var(--accent);
  margin-bottom: 24px;
}
.feature-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: 20px;
  color: var(--fg);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.feature-desc {
  font-size: 15px;
  color: var(--fg-2);
  line-height: 1.6;
  margin-bottom: 20px;
}
.feature-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  padding: 4px 10px;
  border-radius: 2px;
  background: var(--accent-dim);
}

/* ─── Manifesto ─── */
.manifesto {
  padding: 80px 48px;
}
.manifesto-rule {
  height: 1px;
  background: var(--border);
  margin-bottom: 48px;
}
.manifesto-rule:last-child {
  margin-top: 48px;
  margin-bottom: 0;
}
.manifesto-quote {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.4;
  color: var(--fg);
  letter-spacing: -0.01em;
  max-width: 820px;
  margin: 0 auto 32px;
  font-style: normal;
  text-align: center;
}
.manifesto-body {
  font-size: 16px;
  color: var(--fg-2);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

/* ─── Closing ─── */
.closing {
  padding: 100px 48px;
  text-align: center;
}
.closing-headline {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 28px;
}
.closing-body {
  font-size: 17px;
  color: var(--fg-2);
  line-height: 1.65;
  max-width: 560px;
  margin: 0 auto 40px;
}
.closing-coda {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ─── Footer ─── */
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 48px;
  border-top: 1px solid var(--border);
}
.footer-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand {
  font-family: var(--display);
  font-weight: 800;
  font-size: 16px;
  color: var(--accent);
}
.footer-divider {
  color: var(--border);
}
.footer-moto {
  font-size: 13px;
  color: var(--fg-2);
}
.footer-copy {
  font-size: 12px;
  color: var(--fg-2);
  font-family: var(--mono);
}

/* ─── Mobile ─── */
@media (max-width: 768px) {
  .nav { padding: 16px 24px; }
  .nav-tagline { display: none; }
  .hero { grid-template-columns: 1fr; padding: 60px 24px 48px; gap: 48px; }
  .hero-right { order: -1; }
  .assembly-diagram { max-width: 280px; }
  .proof { padding: 32px 24px; }
  .proof-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .proof-divider { display: none; }
  .proof-stat { text-align: left; }
  .features { padding: 48px 24px; }
  .features-grid { grid-template-columns: 1fr; gap: 2px; }
  .manifesto { padding: 60px 24px; }
  .closing { padding: 60px 24px; }
  .footer { flex-direction: column; gap: 12px; padding: 20px 24px; text-align: center; }
  .footer-left { flex-direction: column; gap: 4px; }
}