:root {
  --bg: #090909;
  --surface: #111111;
  --surface-2: #171717;
  --text: #f5f5f5;
  --muted: #a0a0a0;
  --gold: #e8a020;
  --green: #2ecc8e;
  --red: #e84040;
  --blue: #5588cc;
  --line: #282828;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
  padding: 14px 28px;
  background: rgba(9, 9, 9, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
}

.brand span {
  display: inline-grid;
  place-items: center;
  width: 76px;
  height: 34px;
  color: #090909;
  background: var(--green);
  border-radius: 4px;
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 13px;
  letter-spacing: 0;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 14px;
  color: var(--muted);
}

nav a {
  text-decoration: none;
}

nav a:hover {
  color: var(--text);
}

.hero {
  position: relative;
  min-height: 88vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 120px;
  background: linear-gradient(180deg, transparent, var(--bg));
  pointer-events: none;
}

.hero-scene {
  position: absolute;
  inset: 0;
  opacity: 0.72;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 42px 42px;
}

.rail {
  position: absolute;
  left: 64%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), var(--blue), transparent);
}

.rail-a {
  top: 38%;
}

.rail-b {
  top: 57%;
  background: linear-gradient(90deg, transparent, var(--green), var(--gold), transparent);
}

.node {
  position: absolute;
  display: grid;
  place-items: center;
  min-width: 92px;
  height: 42px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(17, 17, 17, 0.9);
  color: var(--muted);
  font: 700 12px/1 "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  text-transform: uppercase;
}

.node-model { left: 68%; top: 29%; }
.node-flow { left: 66%; top: 52%; }
.node-gate { left: 78%; top: 36%; color: #090909; background: var(--gold); }
.node-action { right: 12%; top: 55%; }
.node-proof { right: 5%; top: 38%; color: #090909; background: var(--green); }

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: 96px 28px 88px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font: 800 12px/1.2 "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.05;
  font-family: "Space Grotesk", Inter, ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0;
}

h1 {
  max-width: 720px;
  font-size: 76px;
}

h2 {
  max-width: 840px;
  font-size: 38px;
}

h3 {
  font-size: 20px;
}

.lede {
  max-width: 760px;
  margin: 18px 0 0;
  color: #d7d7d7;
  font-size: 23px;
}

.thesis {
  margin: 34px 0 0;
  font-size: 30px;
  font-weight: 800;
}

.support {
  max-width: 680px;
  margin: 12px 0 0;
  color: #cecece;
  font-size: 18px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 6px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  color: #090909;
  background: var(--gold);
}

.button.secondary {
  border: 1px solid var(--line);
  background: rgba(17, 17, 17, 0.78);
}

.proof-note {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.content {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 86px 28px;
}

.band {
  background: var(--surface);
  border-block: 1px solid var(--line);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  align-items: center;
  gap: 44px;
}

.split p,
.evidence p,
.byline p {
  max-width: 720px;
  color: #cdcdcd;
  font-size: 18px;
}

.proof-loop {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 10px;
  align-items: center;
  margin: 0;
}

.proof-loop div {
  display: grid;
  place-items: center;
  min-height: 72px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-2);
  color: #e6e6e6;
  text-align: center;
  font-weight: 800;
}

.proof-loop span {
  color: var(--muted);
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
}

.proof-loop .warn {
  color: #090909;
  background: var(--gold);
}

.proof-loop .ok {
  color: #090909;
  background: var(--green);
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.status {
  min-height: 286px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.status-label {
  margin: 0 0 10px;
  font: 800 11px/1 "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  text-transform: uppercase;
}

.status-green .status-label { color: var(--green); }
.status-yellow .status-label { color: var(--gold); }
.status-red .status-label { color: var(--red); }

.status h3 {
  padding-bottom: 14px;
  border-bottom: 2px solid var(--line);
}

.status-green h3 { border-color: var(--green); }
.status-yellow h3 { border-color: var(--gold); }
.status-red h3 { border-color: var(--red); }

ul {
  padding-left: 18px;
  color: #d0d0d0;
}

li + li {
  margin-top: 9px;
}

.audience-grid,
.follow-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.audience-grid span,
.follow-grid a {
  min-height: 78px;
  display: grid;
  place-items: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-2);
  text-align: center;
  font-weight: 800;
  text-decoration: none;
}

.follow-grid a {
  color: var(--muted);
}

.evidence {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  gap: 36px;
  align-items: start;
}

.receipt {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0f0f0f;
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
}

.receipt p {
  margin: 0;
  color: #d8d8d8;
  font-size: 13px;
}

.receipt p + p {
  margin-top: 12px;
}

.receipt strong {
  color: var(--gold);
}

.text-link {
  display: inline-flex;
  margin-top: 8px;
  color: var(--gold);
  font-weight: 800;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    min-height: 760px;
  }

  h1 {
    font-size: 56px;
  }

  h2 {
    font-size: 32px;
  }

  .split,
  .evidence,
  .status-grid {
    grid-template-columns: 1fr;
  }

  .audience-grid,
  .follow-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .proof-loop {
    grid-template-columns: 1fr;
  }

  .rail,
  .node {
    opacity: 0.22;
  }

  .proof-loop span {
    transform: rotate(90deg);
    justify-self: center;
  }
}

@media (max-width: 560px) {
  .site-header,
  .hero-copy,
  .content {
    padding-inline: 18px;
  }

  nav {
    gap: 8px 14px;
  }

  h1 {
    font-size: 44px;
  }

  h2 {
    font-size: 28px;
  }

  .lede,
  .thesis {
    font-size: 22px;
  }

  .node {
    min-width: 74px;
    height: 36px;
    font-size: 10px;
  }

  .audience-grid,
  .follow-grid {
    grid-template-columns: 1fr;
  }
}