:root {

  --bg: #05080d;
  --bg-raised: #091118;
  --bg-media: #0a1016;
  --bg-a55: color-mix(in srgb, var(--bg) 55%, transparent);
  --bg-a85: color-mix(in srgb, var(--bg) 85%, transparent);
  --bg-nav: color-mix(in srgb, var(--bg) 91%, transparent);

  --ink: #f0f1f2;
  --ink-body: #dce6ec;
  --ink-muted: #b4bec7;

  --burgundy: #2a0f12;
  --burgundy-line: #3a1c1d;
  --red: #8b2d2f;
  --red-light: #d85b5b;
  --connector: #a26a6a;

  --gold: #e0b15a;
  --gold-light: #f2d08e;
  --gold-dark: #b3863a;
  --gold-a20: color-mix(in srgb, var(--gold) 22%, transparent);
  --gold-a40: color-mix(in srgb, var(--gold) 40%, transparent);
  --gold-a70: color-mix(in srgb, var(--gold) 70%, transparent);
  --gold-a80: color-mix(in srgb, var(--gold) 80%, transparent);

  --white: #ffffff;
  --surface: rgba(247, 243, 237, .97);
  --surface-ink: #1a1816;
  --surface-ink-muted: #3e3935;
  --surface-placeholder: #9a928c;
  --line: color-mix(in srgb, var(--burgundy-line) 12%, transparent);
  --line-strong: color-mix(in srgb, var(--burgundy-line) 20%, transparent);
  --tint: color-mix(in srgb, var(--white) 60%, transparent);
  --tint-strong: color-mix(in srgb, var(--white) 85%, transparent);

  --bar-ink: #f6f1e7;
  --bar-muted: rgba(240, 226, 200, .62);
  --bar-sheen: color-mix(in srgb, var(--white) 6%, transparent);
  --glass: color-mix(in srgb, var(--white) 8%, transparent);
  --glass-hover: color-mix(in srgb, var(--white) 18%, transparent);
  --glass-line: color-mix(in srgb, var(--white) 28%, transparent);

  --scrollbar: rgba(218, 228, 235, .28);
  --scrollbar-light: rgba(22, 32, 39, .25);

  --brain-1: #18dbcd;
  --brain-2: #3a7df6;
  --brain-3: #a147e4;
  --brain-4: #ed459e;
  --brain-5: #40d771;
  --brain-6: #e6af3e;
  --field-1: #6be0d6;
  --field-2: #809aff;
  --field-3: #bb83e6;
  --field-4: #f07caa;
  --field-5: #58d294;
  --field-ripple: #9b2f3b;
  --art-highlight: #f0f4f6;

  --hub-shade: rgb(16 20 26 / 82%);
  --hub-shade-deep: rgb(8 10 14 / 74%);
  --hub-glyph: #d2c9be;
  --hub-glyph-lit: #efe6da;

  --font-sans: 'IBM Plex Sans', Arial, Helvetica, sans-serif;
  --font-mono: 'IBM Plex Mono', Consolas, monospace;

  --text-2xs: 10.5px;
  --text-xs: 11.5px;
  --text-sm: 12px;
  --text-ui: 14px;
  --text-md: 15px;
  --text-body: 16px;
  --text-copy: 16px;
  --text-title: 15px;
  --text-lg: 18px;
  --text-xl: 23px;
  --text-logo: clamp(26px, 1.85vw, 30px);
  --logo-mark: 1.55em;
  --text-degree: clamp(19px, 1.55vw, 23px);
  --text-popup-title: clamp(24px, 2.2vw, 30px);
  --text-about-lead: clamp(19px, 1.45vw, 22px);
  --text-about-body: clamp(16px, 1.18vw, 18px);
  --text-name: clamp(48px, 5.5vw, 88px);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 28px;
  --space-8: 32px;
  --space-9: 40px;
  --space-10: 48px;
  --space-11: 56px;
  --space-12: 64px;

  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --radius-pill: 999px;

  --shadow-ink: rgba(0, 0, 0, .95);
  --shadow-node: inset 0 1px 0 var(--tint), 0 24px 50px -28px var(--shadow-ink);
  --shadow-raised: inset 0 1px 0 var(--tint), 0 30px 60px -36px var(--shadow-ink);
  --shadow-soft: 0 14px 28px -14px rgba(0, 0, 0, .6);
  --shadow-button: 0 10px 24px -16px color-mix(in srgb, var(--red) 90%, transparent);

  --ease: cubic-bezier(.22, .7, .18, 1);
  --dur-fast: .2s;
  --dur: .32s;
  --dur-fade: .6s;
  --dur-flip: .7s;
  --dur-camera: 900ms;
  --dur-signal: 1.8s;

  --nav-height: 96px;
  --region-top: 116px;
  --region-side: clamp(24px, 5vw, 82px);
  --region-bottom: 30px;
  --width-column: 920px;
  --width-card: 680px;
  --width-popup: 720px;
  --width-narrow: 1180px;
  --width-content: 1240px;
  --width-wide: 1340px;
}

@media (max-width: 950px) {
  :root {
    --nav-height: 78px;
    --region-top: 92px;
    --region-side: 14px;
    --region-bottom: 16px;
    --text-name: clamp(39px, 9vw, 75px);
  }
}

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

html,
body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
}

body {
  color: var(--ink-body);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-synthesis: none;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar) transparent;
}

h1, h2, h3, h4, p, ul, figure {
  margin: 0;
}

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

button,
input,
textarea {
  font: inherit;
}

[hidden] {
  display: none !important;
}

#signals {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  transform-origin: 50% 50%;
  transform: rotate(var(--field-angle, 0deg)) scale(var(--field-scale, 1));
  transition: transform var(--field-duration, var(--dur-camera)) var(--ease);
  will-change: transform;
}

.engineered-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  background: var(--bg);
  transition: opacity var(--dur-fade);
}

body.landing-active .engineered-bg {
  opacity: 0;
}

#gravity-grid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.container {
  position: fixed;
  inset: 0;
  transition: transform var(--dur-camera) var(--ease);
  will-change: transform;
}

section {
  position: absolute;
  width: 100vw;
  height: 100svh;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fade);
}

section.camera-active {
  opacity: 1;
  pointer-events: auto;
}

.brain-portal {
  position: fixed;
  inset: 0;
  z-index: 900;
  overflow: hidden;
  pointer-events: none;
}

.node-scroll-region {
  position: absolute;
  top: var(--region-top);
  right: var(--region-side);
  bottom: var(--region-bottom);
  left: var(--region-side);
  z-index: 1;
  padding: var(--space-7) clamp(var(--space-4), 3vw, var(--space-10)) var(--space-12);
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.network-field {
  min-height: 100%;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 4%;
  background: var(--bg-nav);
  border-bottom: 1px solid var(--glass);
  backdrop-filter: blur(12px);
}

.logo {
  display: inline-flex;
  align-items: baseline;
  color: var(--ink);
  font: 500 var(--text-logo)/1 var(--font-sans);
  letter-spacing: 0.17em;
  text-decoration: none;
}

.logo-name {
  text-transform: uppercase;
}

.logo-mark {
  margin-left: 0.04em;
  color: var(--red);
  font-weight: 700;
  font-size: var(--logo-mark);
  letter-spacing: 0.02em;
  transform: translateY(0.13em);
}

.nav-links,
.nav-dropdown {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(var(--space-4), 2.2vw, var(--space-9));
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: var(--space-3) var(--space-1);
  color: var(--ink);
  font: 500 var(--text-lg) var(--font-sans);
  opacity: .92;
  transition: color var(--dur-fast), opacity var(--dur-fast);
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link.active {
  opacity: 1;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: var(--space-1);
  height: 2px;
  background: var(--red-light);
  opacity: .55;
  transform: scaleX(0);
  transition: transform var(--dur-fast);
}

.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link.brain-target::after {
  transform: scaleX(1);
}

.nav-link.active::after {
  background: var(--red);
  opacity: 1;
  transform: scaleX(1);
}

.nav-link.brain-target {
  opacity: 1;
}

.hamburger-menu {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}

.hamburger-menu span {
  display: block;
  height: 3px;
  border-radius: 3px;
  background: var(--ink);
  transition: transform var(--dur), opacity var(--dur), background-color var(--dur);
}

.hamburger-menu:hover span,
.navbar.expanded .hamburger-menu span {
  background: var(--red);
}

.navbar.expanded .hamburger-menu span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.navbar.expanded .hamburger-menu span:nth-child(2) { opacity: 0; }
.navbar.expanded .hamburger-menu span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

.nav-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-4) 0 var(--space-6);
  background: var(--bg-raised);
  border-bottom: 1px solid var(--glass);
}

.navbar.expanded .nav-dropdown {
  display: flex;
}

@media (max-width: 1150px) {
  .nav-links { gap: var(--space-4); }
  .nav-links .nav-link { font-size: var(--text-body); }
}

@media (max-width: 950px) {
  .nav-links { display: none; }
  .hamburger-menu { display: flex; }
  .logo { letter-spacing: 0.13em; }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border: 0;
  border-radius: var(--radius-md);
  background: var(--red);
  color: var(--bar-ink);
  font: 600 var(--text-md)/1.2 var(--font-sans);
  box-shadow: var(--shadow-button);
  cursor: pointer;
  transition: background-color var(--dur-fast);
}

.btn:hover,
.btn:focus-visible {
  background: var(--red-light);
  outline: none;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag-list span {
  padding: var(--space-1) var(--space-3);
  border: 1px solid color-mix(in srgb, var(--red) 28%, transparent);
  border-radius: var(--radius-xs);
  background: var(--tint-strong);
  color: var(--surface-ink);
  font: 500 var(--text-ui)/1.3 var(--font-mono);
}

.tag-list .tag-more {
  border-style: dashed;
  background: transparent;
  color: var(--surface-ink-muted);
}

.dash-list {
  display: grid;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
}

.dash-list li {
  position: relative;
  padding-left: var(--space-5);
  color: var(--surface-ink);
  font: 400 var(--text-copy)/1.65 var(--font-sans);
}

.dash-list li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: .72em;
  width: var(--space-2);
  height: 2px;
  background: var(--red);
}

.network-node strong,
.extra-detail-view strong {
  color: var(--surface-ink);
  font-family: inherit;
  font-size: inherit;
  font-weight: 600;
}

.node-network {
  position: relative;
  isolation: isolate;
}

.node-links {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 0;
  overflow: visible;
  pointer-events: none;
}

.node-link {
  fill: none;
  stroke-width: 1.25;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: .55;
  transition: opacity var(--dur) ease, stroke-width var(--dur) ease;
}

.node-link.is-lit {
  opacity: .85;
  stroke-width: 1.4;
}

.node-link.is-lit:not(.node-tendril) {
  stroke: var(--red);
  stroke-dasharray: 5 7;
  animation: node-signal var(--dur-signal) linear infinite;
}

.node-link.is-steady:not(.node-tendril) {
  opacity: 1;
  stroke: var(--red);
  stroke-width: 1.5px;
}

.node-tendril { opacity: .85; }
.node-tendril.is-lit,
.node-tendril.is-steady { opacity: 1; }
.node-junction { opacity: .8; }

@keyframes node-signal {
  to { stroke-dashoffset: -24; }
}

.network-node {
  position: relative;
  z-index: 1;
  min-width: 0;
  padding: 0;
  background: var(--surface);
  border: 1px solid var(--burgundy-line);
  border-radius: var(--radius-lg);
  color: var(--surface-ink);
  font-family: var(--font-sans);
  font-weight: 400;
  box-shadow: var(--shadow-node);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) ease, border-color var(--dur) ease;
}

.network-node:hover,
.network-node:focus-within {
  border-color: var(--red);
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 var(--tint),
    0 0 28px -14px color-mix(in srgb, var(--red) 60%, transparent),
    0 28px 54px -28px var(--shadow-ink);
}

.network-node:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: var(--space-1);
}

.network-node.is-expanded-origin {
  border-color: var(--red);
}

.network-node :is(h1, h2, h3, h4) {
  color: var(--surface-ink);
  font-family: var(--font-sans);
}

.node-bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 54px;
  margin: -1px -1px 0;
  padding: var(--space-3) var(--space-5);
  background: var(--burgundy);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  box-shadow: inset 0 -1px 0 var(--red);
  color: var(--bar-muted);
  font: 500 var(--text-xs)/1.2 var(--font-mono);
  letter-spacing: .09em;
  text-transform: uppercase;
}

.node-bar::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(130% 160% at 100% 0, var(--bar-sheen), transparent 55%);
  pointer-events: none;
}

.node-bar > * {
  position: relative;
  z-index: 1;
}

.node-bar-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
  color: var(--bar-ink);
  font: 600 var(--text-title)/1.35 var(--font-sans);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.node-bar-meta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  white-space: nowrap;
}

.node-body {
  display: block;
  padding: var(--space-5) var(--space-6) var(--space-6);
}

.node-port {
  position: absolute;
  z-index: 4;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, var(--gold-light), var(--gold) 55%, var(--gold-dark));
  box-shadow: 0 0 0 3px var(--bg), 0 0 0 4.5px var(--gold-a40), 0 0 12px var(--gold-a40);
  transform: translate(-50%, -50%);
  pointer-events: none;
  transition: box-shadow var(--dur);
}

.network-node:hover .node-port,
.network-node:focus-within .node-port {
  box-shadow: 0 0 0 3px var(--bg), 0 0 0 4.5px var(--gold-a80), 0 0 18px var(--gold-a80);
}

.bar-button {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--glass-line);
  border-radius: 50%;
  background: var(--glass);
  color: var(--bar-ink);
  font-size: var(--text-body);
  cursor: pointer;
  transition: background-color var(--dur-fast), border-color var(--dur-fast), transform var(--dur-fast);
}

.bar-button:hover,
.bar-button:focus-visible {
  border-color: var(--gold);
  background: var(--glass-hover);
  outline: none;
}

@media (max-width: 700px) {
  .node-bar { padding: var(--space-2) var(--space-4); }
}

.node-expand-layer {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 950;
}

.node-expand-backdrop {
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 50% 45%, var(--bg-a55) 0%, var(--bg-a85) 100%);
  opacity: 0;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: opacity var(--dur) ease;
}

.node-expand-layer.is-open .node-expand-backdrop { opacity: 1; }
.node-expand-layer.is-swapped .node-expand-backdrop { transition: none; }

.node-expand-links {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}

.node-expand-ghost {
  position: absolute;
  z-index: 1;
  border: 1px dashed color-mix(in srgb, var(--red) 70%, transparent);
  border-radius: var(--radius-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) ease var(--dur-fast);
}

.node-expand-ghost.is-visible { opacity: .7; }

.expanded-node {
  position: absolute;
  z-index: 2;
  display: flex;
  flex-direction: column;
  transform-origin: 0 0;
}

.expanded-node:hover,
.expanded-node:focus-within {
  transform: none;
  box-shadow: inset 0 1px 0 var(--tint), 0 40px 90px -40px var(--shadow-ink);
}

.expanded-node-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-light) transparent;
}

.expanded-node-close:hover,
.expanded-node-close:focus-visible {
  transform: rotate(90deg);
}

@media (prefers-reduced-motion: reduce) {
  .container,
  section,
  #signals,
  .engineered-bg,
  .network-node,
  .node-link,
  .node-port,
  .node-expand-backdrop,
  .node-expand-ghost {
    transition: none !important;
  }

  #signals { transform: none !important; }
  .node-link.is-lit { animation: none; }
  .network-node:hover,
  .network-node:focus-within { transform: none; }
}