:root {
  color-scheme: dark;
  --bg: #090a0b;
  --bg-elevated: #101214;
  --panel: #121416;
  --panel-strong: #17191c;
  --line: #2a2d31;
  --line-soft: rgba(255, 255, 255, 0.1);
  --ink: #f1f0ed;
  --muted: #9b9da0;
  --quiet: #6b6e73;
  --red: #dc2626;
  --red-bright: #f04444;
  --red-soft: rgba(220, 38, 38, 0.18);
  --green: #22c55e;
  --amber: #f59e0b;
  --max-width: 1240px;
  --gutter: clamp(1.25rem, 4vw, 4.75rem);
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --display: clamp(3.6rem, 10vw, 9.5rem);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 76% 5%, rgba(220, 38, 38, 0.1), transparent 27rem),
    var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::selection {
  background: var(--red);
  color: #fff;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible {
  outline: 2px solid var(--red-bright);
  outline-offset: 5px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  background: var(--ink);
  color: var(--bg);
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.noise {
  position: fixed;
  z-index: 20;
  inset: 0;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
  mix-blend-mode: screen;
}

.site-header,
.section-pad,
.site-footer {
  width: min(100%, var(--max-width));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.site-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 5.5rem;
  border-bottom: 1px solid var(--line-soft);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  width: fit-content;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.2em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 1.65rem;
  height: 1.65rem;
  border: 1px solid var(--red);
  color: var(--red-bright);
  font-size: 0.66rem;
  letter-spacing: -0.08em;
}

.site-nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2.5rem);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.site-nav a,
.text-link,
.footer-meta {
  transition: color 160ms ease;
}

.site-nav a:hover,
.text-link:hover {
  color: var(--red-bright);
}

.header-status {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.55rem;
  margin: 0;
  color: var(--quiet);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.status-dot {
  display: inline-block;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0.2rem rgba(34, 197, 94, 0.12), 0 0 1rem rgba(34, 197, 94, 0.6);
}

.section-pad {
  padding-top: clamp(6rem, 12vw, 11rem);
  padding-bottom: clamp(6rem, 12vw, 11rem);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(20rem, 0.95fr);
  align-items: center;
  gap: clamp(3rem, 8vw, 8rem);
  min-height: min(52rem, calc(100vh - 5.5rem));
  padding-top: clamp(5rem, 10vw, 9rem);
}

.eyebrow,
.section-kicker,
.card-topline,
.visual-topline,
.visual-caption,
.hero-notes,
.footer-meta {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  line-height: 1.45;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 0 0 2.25rem;
  color: var(--muted);
}

.eyebrow-rule {
  width: 2.25rem;
  height: 1px;
  background: var(--red);
}

.hero h1,
.section-heading h2,
.loop-intro h2,
.access-card h2,
.system-card h3 {
  margin: 0;
  font-weight: 850;
  letter-spacing: -0.065em;
  line-height: 0.94;
}

.hero h1 {
  max-width: 10ch;
  font-size: var(--display);
}

.hero h1 span,
.hero h1 em {
  display: block;
}

.hero h1 em,
.section-heading em,
.loop-intro em,
.access-card em,
.system-card em {
  color: var(--red-bright);
  font-style: normal;
}

.hero-deck {
  max-width: 34rem;
  margin: 2.25rem 0 0;
  color: #c4c5c6;
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  min-height: 3.25rem;
  padding: 0.9rem 1.2rem;
  border: 1px solid transparent;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: border-color 160ms ease, background-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--red);
  color: #fff;
}

.button-primary:hover {
  background: var(--red-bright);
}

.button-outline {
  border-color: var(--line);
  color: var(--ink);
}

.button-outline:hover {
  border-color: var(--red);
  color: var(--red-bright);
}

.text-link {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem 2rem;
  margin: 4.5rem 0 0;
  color: var(--quiet);
}

.hero-notes p {
  display: flex;
  gap: 0.65rem;
  margin: 0;
}

.note-index {
  color: var(--red-bright);
}

.hero-visual {
  position: relative;
  min-height: clamp(25rem, 42vw, 38rem);
  padding: 1.25rem;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.045), transparent 45%), var(--panel);
  box-shadow: 0 2rem 5rem rgba(0, 0, 0, 0.24);
}

.hero-visual::before,
.hero-visual::after {
  position: absolute;
  width: 0.45rem;
  height: 0.45rem;
  border-color: var(--red);
  content: "";
}

.hero-visual::before {
  top: -1px;
  left: -1px;
  border-top: 1px solid;
  border-left: 1px solid;
}

.hero-visual::after {
  right: -1px;
  bottom: -1px;
  border-right: 1px solid;
  border-bottom: 1px solid;
}

.visual-topline,
.visual-caption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--quiet);
}

.signal-readout {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--green);
}

.city-map {
  position: relative;
  min-height: clamp(20rem, 34vw, 32rem);
  margin-top: 1rem;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background-color: #0d0f11;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    radial-gradient(circle at 52% 47%, rgba(220, 38, 38, 0.16), transparent 30%);
  background-size: 2.5rem 2.5rem, 2.5rem 2.5rem, auto;
}

.city-map::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 50%, rgba(255, 255, 255, 0.025) 50%);
  background-size: 100% 0.3rem;
  content: "";
  opacity: 0.5;
  pointer-events: none;
}

.map-line,
.map-cross,
.map-node,
.map-pulse {
  position: absolute;
}

.map-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(220, 38, 38, 0.85), transparent);
  transform-origin: left center;
}

.map-line-a { top: 32%; left: 15%; width: 76%; transform: rotate(19deg); }
.map-line-b { top: 69%; left: 9%; width: 82%; transform: rotate(-24deg); }
.map-line-c { top: 15%; left: 53%; width: 61%; transform: rotate(74deg); }
.map-line-d { top: 80%; left: 27%; width: 55%; transform: rotate(-69deg); opacity: 0.6; }

.map-node {
  width: 0.55rem;
  height: 0.55rem;
  border: 1px solid var(--red-bright);
  border-radius: 50%;
  background: var(--bg);
  box-shadow: 0 0 0 0.35rem var(--red-soft), 0 0 1.25rem rgba(220, 38, 38, 0.7);
}

.node-a { top: 23%; left: 24%; }
.node-b { top: 42%; left: 53%; width: 0.85rem; height: 0.85rem; background: var(--red); }
.node-c { top: 65%; left: 28%; }
.node-d { top: 25%; left: 77%; }
.node-e { top: 78%; left: 70%; }
.node-f { top: 57%; left: 85%; }

.map-cross {
  width: 1.1rem;
  height: 1.1rem;
  opacity: 0.7;
}

.map-cross::before,
.map-cross::after {
  position: absolute;
  background: var(--quiet);
  content: "";
}

.map-cross::before { top: 50%; left: 0; width: 100%; height: 1px; }
.map-cross::after { top: 0; left: 50%; width: 1px; height: 100%; }
.cross-a { top: 17%; left: 65%; }
.cross-b { top: 74%; left: 14%; }
.cross-c { top: 49%; left: 39%; }

.map-label {
  position: absolute;
  color: var(--quiet);
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.13em;
}

.label-a { top: 11%; left: 12%; }
.label-b { top: 48%; left: 57%; color: var(--red-bright); }
.label-c { right: 9%; bottom: 11%; }

.map-pulse {
  width: 5rem;
  height: 5rem;
  border: 1px solid rgba(220, 38, 38, 0.4);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: pulse 4.4s ease-out infinite;
}

.pulse-a { top: 42%; left: 53%; }
.pulse-b { top: 42%; left: 53%; animation-delay: 2.2s; }

.visual-caption {
  margin-top: 0.85rem;
}

.visual-caption span:last-child {
  color: var(--amber);
}

.section-heading h2,
.loop-intro h2,
.access-card h2 {
  font-size: clamp(3.1rem, 7vw, 7.2rem);
}

.section-kicker {
  margin: 0 0 2rem;
  color: var(--red-bright);
}

.signal-section {
  border-top: 1px solid var(--line-soft);
}

.signal-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.75fr);
  gap: clamp(3rem, 10vw, 10rem);
  align-items: end;
  margin-top: clamp(3.5rem, 7vw, 7rem);
}

.signal-copy {
  max-width: 38rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.signal-copy p {
  margin: 0;
}

.signal-copy p + p {
  margin-top: 1.6rem;
}

.signal-copy .lead {
  color: var(--ink);
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  line-height: 1.45;
}

.quote-card {
  position: relative;
  min-height: 17rem;
  padding: 2rem;
  border: 1px solid var(--line);
  background: var(--panel);
}

.quote-mark {
  margin: -0.8rem 0 0;
  color: var(--red);
  font-family: Georgia, serif;
  font-size: 5rem;
  line-height: 1;
}

.quote {
  max-width: 20rem;
  margin: 0.5rem 0 2rem;
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.quote-source {
  margin: 0;
  color: var(--quiet);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.systems-section {
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.015));
}

.systems-heading {
  display: grid;
  grid-template-columns: 1fr 1.2fr 0.75fr;
  gap: 2rem;
  align-items: end;
}

.systems-heading .section-kicker {
  align-self: start;
}

.section-summary {
  max-width: 20rem;
  margin: 0 0 0.4rem;
  color: var(--muted);
  font-size: 1rem;
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: clamp(3.5rem, 7vw, 7rem);
  border: 1px solid var(--line);
  background: var(--line);
}

.system-card {
  min-height: 25rem;
  padding: clamp(1.25rem, 3vw, 2.5rem);
  background: var(--bg-elevated);
}

.card-topline {
  display: flex;
  justify-content: space-between;
  color: var(--quiet);
}

.card-topline span:first-child {
  color: var(--red-bright);
}

.card-icon {
  position: relative;
  width: 3.5rem;
  height: 3.5rem;
  margin: 4rem 0 2rem;
  border: 1px solid var(--line);
  color: var(--red-bright);
}

.icon-cross::before,
.icon-cross::after {
  position: absolute;
  background: currentColor;
  content: "";
}

.icon-cross::before { top: 50%; left: 22%; width: 56%; height: 1px; }
.icon-cross::after { top: 22%; left: 50%; width: 1px; height: 56%; }

.icon-grid {
  background-image:
    linear-gradient(var(--red) 1px, transparent 1px),
    linear-gradient(90deg, var(--red) 1px, transparent 1px);
  background-position: 0.85rem 0.85rem;
  background-size: 0.85rem 0.85rem;
  opacity: 0.8;
}

.icon-pulse::before,
.icon-pulse::after {
  position: absolute;
  content: "";
}

.icon-pulse::before {
  top: 50%;
  left: 0.6rem;
  width: 2.3rem;
  height: 1px;
  background: var(--red-bright);
  box-shadow: 0 -0.4rem 0 -0.25rem var(--red-bright), 0 0.4rem 0 -0.25rem var(--red-bright);
}

.icon-pulse::after {
  top: 1.1rem;
  left: 1.5rem;
  width: 0.55rem;
  height: 0.55rem;
  border: 1px solid var(--red-bright);
  border-radius: 50%;
  box-shadow: 0 0 0 0.25rem var(--red-soft);
}

.system-card h3 {
  font-size: clamp(2rem, 3.3vw, 3.4rem);
}

.system-card p {
  max-width: 22rem;
  margin: 1.5rem 0 0;
  color: var(--muted);
}

.loop-section {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(3rem, 10vw, 10rem);
  border-top: 1px solid var(--line-soft);
}

.loop-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.loop-item {
  display: grid;
  grid-template-columns: 3rem minmax(7rem, 0.55fr) 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--line);
}

.loop-item:first-child {
  padding-top: 0;
}

.loop-number {
  color: var(--red-bright);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.loop-word {
  color: var(--ink);
  font-size: clamp(1.7rem, 3vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.05em;
}

.loop-detail {
  color: var(--muted);
  font-size: 0.92rem;
}

.access-section {
  border-top: 1px solid var(--line-soft);
}

.access-card {
  max-width: 68rem;
  padding: clamp(2rem, 6vw, 6rem);
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(220, 38, 38, 0.12), transparent 45%),
    var(--panel);
}

.access-card h2 {
  max-width: 10ch;
}

.access-copy {
  max-width: 35rem;
  margin: 2rem 0 2.5rem;
  color: var(--muted);
  font-size: 1.1rem;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: center;
  gap: 1rem;
  min-height: 8rem;
  padding-top: 2rem;
  padding-bottom: 2rem;
  border-top: 1px solid var(--line-soft);
  color: var(--quiet);
}

.site-footer > p {
  margin: 0;
  text-align: center;
  font-size: 0.82rem;
}

.site-footer .footer-meta {
  text-align: right;
}

.noscript-note {
  margin: 0;
  padding: 1rem var(--gutter);
  background: var(--red);
  color: #fff;
  font-family: var(--mono);
  font-size: 0.75rem;
  text-align: center;
}

.js .reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity 700ms ease, transform 700ms ease;
}

.js .reveal.revealed {
  opacity: 1;
  transform: none;
}

.js .reveal-delay { transition-delay: 100ms; }
.js .reveal-delay-2 { transition-delay: 180ms; }
.js .reveal-delay-3 { transition-delay: 260ms; }

@keyframes pulse {
  0% { opacity: 0.75; transform: translate(-50%, -50%) scale(0.35); }
  70%, 100% { opacity: 0; transform: translate(-50%, -50%) scale(1.7); }
}

@media (max-width: 860px) {
  .site-header {
    grid-template-columns: 1fr auto;
    gap: 1rem;
  }

  .site-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: space-between;
    width: 100%;
    padding-bottom: 1rem;
  }

  .header-status {
    grid-column: 2;
    grid-row: 1;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-visual {
    min-height: 25rem;
  }

  .systems-heading,
  .loop-section {
    grid-template-columns: 1fr;
  }

  .systems-heading .section-summary {
    margin-top: 0.5rem;
  }
}

@media (max-width: 640px) {
  .section-pad {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }

  .hero {
    gap: 3rem;
    padding-top: 4.5rem;
  }

  .hero h1 {
    font-size: clamp(3.55rem, 17vw, 6rem);
  }

  .hero-notes {
    display: grid;
    gap: 0.75rem;
    margin-top: 3.5rem;
  }

  .hero-visual {
    min-height: 21rem;
    padding: 0.8rem;
  }

  .city-map {
    min-height: 17rem;
  }

  .visual-topline,
  .visual-caption {
    font-size: 0.55rem;
  }

  .signal-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .system-grid {
    grid-template-columns: 1fr;
  }

  .system-card {
    min-height: 0;
  }

  .card-icon {
    margin-top: 3rem;
  }

  .loop-item {
    grid-template-columns: 2.4rem 1fr;
    gap: 0.75rem;
  }

  .loop-detail {
    grid-column: 2;
  }

  .site-footer {
    grid-template-columns: 1fr;
    justify-items: start;
    gap: 1.25rem;
    padding-top: 2.5rem;
    padding-bottom: 2.5rem;
  }

  .site-footer > p,
  .site-footer .footer-meta {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}