:root {
  --ink: #102430;
  --ink-soft: #53636a;
  --night: #071b2b;
  --night-2: #0c283a;
  --paper: #f5f4ee;
  --paper-2: #ebece5;
  --white: #ffffff;
  --mint: #5fe0c0;
  --acid: #d7ff72;
  --cyan: #8fdcf1;
  --line: rgba(16, 36, 48, 0.16);
  --line-dark: rgba(255, 255, 255, 0.14);
  --shadow: 0 20px 60px rgba(7, 27, 43, 0.1);
  --sans: "Manrope", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "DM Mono", "SFMono-Regular", Consolas, monospace;
  --radius: 6px;
  --shell: min(1240px, calc(100vw - 48px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

::selection {
  background: var(--acid);
  color: var(--night);
}

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

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

button {
  color: inherit;
  font: inherit;
}

svg {
  display: block;
  max-width: 100%;
}

.shell {
  margin-inline: auto;
  width: var(--shell);
}

.section {
  padding-block: 128px;
}

.section-dark {
  background: var(--night);
  color: var(--white);
}

.section-tint {
  background-color: var(--paper-2);
  background-image:
    linear-gradient(rgba(16, 36, 48, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 36, 48, 0.025) 1px, transparent 1px);
  background-size: 32px 32px;
}

.sr-only {
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

.skip-link {
  background: var(--acid);
  color: var(--night);
  left: 16px;
  padding: 10px 14px;
  position: fixed;
  top: -100px;
  z-index: 200;
}

.skip-link:focus {
  top: 16px;
}

/* Navigation */
.site-header {
  background: rgba(7, 27, 43, 0.9);
  border-bottom: 1px solid var(--line-dark);
  color: var(--white);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.nav {
  align-items: center;
  display: flex;
  height: 76px;
  justify-content: space-between;
}

.brand {
  align-items: center;
  display: inline-flex;
  gap: 13px;
}

.brand-mark {
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.32);
  display: inline-flex;
  font-family: var(--mono);
  font-size: 14px;
  height: 38px;
  justify-content: center;
  letter-spacing: -1px;
  width: 42px;
}

.brand-mark span {
  color: var(--acid);
  margin-inline: 1px;
}

.brand-copy {
  display: grid;
  line-height: 1.2;
}

.brand-copy strong {
  font-size: 13px;
  font-weight: 600;
}

.brand-copy small {
  color: rgba(255, 255, 255, 0.58);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  margin-top: 4px;
  text-transform: uppercase;
}

.nav-panel,
.nav-links,
.nav-actions {
  align-items: center;
  display: flex;
}

.nav-panel {
  gap: 56px;
}

.nav-links {
  gap: 32px;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  position: relative;
}

.nav-links a::after {
  background: var(--acid);
  bottom: -9px;
  content: "";
  height: 1px;
  left: 0;
  position: absolute;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms ease;
  width: 100%;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--white);
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  transform: scaleX(1);
}

.nav-actions {
  gap: 22px;
}

.language-toggle {
  background: none;
  border: 0;
  color: rgba(255, 255, 255, 0.38);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 11px;
  padding: 8px 0;
}

.language-toggle .active {
  color: var(--acid);
}

.menu-toggle {
  background: none;
  border: 0;
  cursor: pointer;
  display: none;
  height: 40px;
  padding: 9px;
  width: 40px;
}

.menu-toggle > span:not(.sr-only) {
  background: var(--white);
  display: block;
  height: 1px;
  margin: 5px 0;
  transition: transform 200ms ease, opacity 200ms ease;
  width: 22px;
}

/* Shared components */
.button {
  align-items: center;
  border: 1px solid transparent;
  display: inline-flex;
  font-size: 12px;
  font-weight: 700;
  gap: 26px;
  justify-content: center;
  letter-spacing: 0.03em;
  min-height: 52px;
  padding: 0 22px;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

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

.button svg {
  fill: none;
  height: 18px;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  width: 18px;
}

.button-small {
  min-height: 38px;
  padding-inline: 16px;
}

.button-outline {
  border-color: rgba(255, 255, 255, 0.28);
}

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

.button-primary {
  background: var(--acid);
  color: var(--night);
}

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

.button-ghost {
  border-color: rgba(255, 255, 255, 0.28);
  color: var(--white);
}

.button-ghost:hover {
  border-color: var(--white);
}

.eyebrow,
.kicker {
  align-items: center;
  color: #45606c;
  display: flex;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  margin: 0 0 26px;
  text-transform: uppercase;
}

.eyebrow.light,
.kicker.light {
  color: rgba(255, 255, 255, 0.56);
}

.status-dot {
  background: var(--acid);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(215, 255, 114, 0.1);
  height: 6px;
  margin-right: 12px;
  width: 6px;
}

.section-heading h2,
.research-copy h2,
.contact-copy h2 {
  font-size: clamp(2.25rem, 4vw, 4.8rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 1.06;
  margin: 0;
  max-width: 900px;
}

.section-heading.split {
  align-items: end;
  display: grid;
  gap: 80px;
  grid-template-columns: 1.45fr 0.55fr;
  margin-bottom: 58px;
}

.section-heading.split > p {
  color: var(--ink-soft);
  font-size: 14px;
  margin: 0 0 7px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms cubic-bezier(.2,.65,.3,1), transform 700ms cubic-bezier(.2,.65,.3,1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hero */
.hero {
  min-height: 820px;
  overflow: hidden;
  padding-top: 76px;
  position: relative;
}

.hero::before {
  background:
    radial-gradient(circle at 70% 30%, rgba(95, 224, 192, 0.09), transparent 32%),
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: auto, 64px 64px, 64px 64px;
  content: "";
  inset: 0;
  pointer-events: none;
  position: absolute;
}

.hero-grid {
  align-items: center;
  display: grid;
  gap: 48px;
  grid-template-columns: 1.04fr 0.96fr;
  min-height: 660px;
  padding-block: 68px 32px;
  position: relative;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: clamp(3.25rem, 6vw, 6.8rem);
  font-weight: 500;
  letter-spacing: -0.067em;
  line-height: 0.95;
  margin: 0;
  max-width: 760px;
}

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

.hero h1 em {
  color: var(--acid);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
}

.hero-intro {
  color: rgba(255, 255, 255, 0.68);
  font-size: 16px;
  margin: 30px 0 0;
  max-width: 610px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
}

.hero-domains {
  display: flex;
  flex-wrap: wrap;
  gap: 9px 22px;
  margin-top: 36px;
}

.hero-domains span {
  color: rgba(255, 255, 255, 0.46);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-domains span::before {
  color: var(--mint);
  content: "+";
  margin-right: 6px;
}

.hero-visual {
  border-left: 1px solid var(--line-dark);
  border-right: 1px solid var(--line-dark);
  height: min(620px, 65vw);
  min-height: 520px;
  overflow: hidden;
  position: relative;
}

.visual-index {
  color: rgba(255, 255, 255, 0.42);
  font-family: var(--mono);
  font-size: 9px;
  left: 24px;
  letter-spacing: 0.12em;
  position: absolute;
  top: 18px;
  z-index: 2;
}

.system-map {
  height: 100%;
  overflow: visible;
  width: 100%;
}

.map-grid path {
  fill: none;
  stroke: #fff;
  stroke-width: 1;
}

.orbit ellipse {
  fill: none;
  stroke: rgba(255, 255, 255, 0.18);
  stroke-dasharray: 3 8;
}

.orbit-one {
  transform-origin: 310px 300px;
  animation: slow-spin 38s linear infinite;
}

.orbit-two {
  transform-origin: 310px 300px;
  animation: slow-spin 48s linear infinite reverse;
}

.signal-trace {
  fill: none;
  opacity: .24;
  stroke: var(--cyan);
  stroke-width: 2;
}

.feedback-path {
  fill: none;
  stroke: url(#loopGradient);
  stroke-dasharray: 6 9;
  stroke-width: 1.6;
}

.node circle {
  fill: var(--night);
  stroke: rgba(255, 255, 255, 0.28);
}

.node text {
  fill: rgba(255, 255, 255, 0.78);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.node-main circle:first-child {
  fill: rgba(95, 224, 192, 0.06);
  stroke: var(--mint);
}

.node-main text:first-of-type {
  fill: var(--white);
  font-size: 30px;
  letter-spacing: -0.05em;
}

.node-main .node-sub {
  fill: var(--mint);
  font-size: 8px;
}

.node-pulse {
  animation: node-pulse 3.5s ease-out infinite;
  fill: none !important;
  stroke: var(--mint) !important;
}

.moving-points circle {
  fill: var(--acid);
}

.visual-caption {
  bottom: 16px;
  color: rgba(255, 255, 255, 0.46);
  display: flex;
  font-family: var(--mono);
  font-size: 9px;
  gap: 16px;
  left: 24px;
  position: absolute;
}

.hero-bottom {
  align-items: center;
  border-top: 1px solid var(--line-dark);
  color: rgba(255, 255, 255, 0.44);
  display: flex;
  font-family: var(--mono);
  font-size: 9px;
  justify-content: space-between;
  letter-spacing: 0.08em;
  padding-block: 20px;
  position: relative;
  text-transform: uppercase;
}

.hero-bottom a:hover {
  color: var(--acid);
}

@keyframes slow-spin {
  to { transform: rotate(360deg); }
}

@keyframes node-pulse {
  0% { opacity: .7; transform: scale(.8); }
  90%, 100% { opacity: 0; transform: scale(1.5); }
}

/* Profile */
.profile-grid {
  display: grid;
  gap: 48px 80px;
  grid-template-columns: 0.78fr 1.22fr;
}

.profile-body {
  max-width: 670px;
}

.profile-body .lead {
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  letter-spacing: -0.025em;
  line-height: 1.5;
  margin: 0 0 24px;
}

.profile-body > p:not(.lead) {
  color: var(--ink-soft);
  font-size: 14px;
  margin: 0;
}

.profile-links {
  display: flex;
  gap: 28px;
  margin-top: 34px;
}

.profile-links a {
  border-bottom: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: 10px;
  padding-bottom: 5px;
  text-transform: uppercase;
}

.profile-links a span {
  color: #2b8c78;
  margin-left: 8px;
}

.metric-grid {
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 48px;
}

.metric {
  min-height: 180px;
  padding: 30px;
}

.metric + .metric {
  border-left: 1px solid var(--line);
}

.metric-value {
  display: block;
  font-size: clamp(2.7rem, 4vw, 4.6rem);
  font-weight: 500;
  letter-spacing: -0.07em;
  line-height: 1;
}

.metric-value sup,
.metric-value span {
  color: #2b8c78;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0;
}

.metric-label {
  color: var(--ink-soft);
  display: block;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  margin-top: 35px;
  text-transform: uppercase;
}

/* Radar & sonar focus */
.focus {
  background:
    radial-gradient(circle at 13% 22%, rgba(95, 224, 192, 0.11), transparent 25%),
    radial-gradient(circle at 86% 78%, rgba(143, 220, 241, 0.08), transparent 28%),
    var(--night);
  overflow: hidden;
  position: relative;
}

.focus::before {
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  content: "";
  height: 720px;
  pointer-events: none;
  position: absolute;
  right: -390px;
  top: -360px;
  width: 720px;
}

.focus-heading {
  align-items: end;
  display: grid;
  gap: 90px;
  grid-template-columns: 1.35fr .65fr;
  position: relative;
}

.focus-heading h2 {
  font-size: clamp(2.25rem, 4vw, 4.8rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 1.06;
  margin: 18px 0 0;
  max-width: 910px;
}

.focus-heading > p {
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
  margin: 0 0 8px;
}

.focus-status {
  border: 1px solid rgba(215, 255, 114, 0.28);
  color: var(--acid);
  display: inline-flex;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.09em;
  padding: 7px 10px;
  text-transform: uppercase;
}

.focus-evidence {
  border-bottom: 1px solid var(--line-dark);
  border-top: 1px solid var(--line-dark);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 72px;
}

.focus-card {
  display: flex;
  flex-direction: column;
  min-height: 430px;
  padding: 32px;
  position: relative;
}

.focus-card + .focus-card {
  border-left: 1px solid var(--line-dark);
}

.focus-card-primary {
  background: rgba(95, 224, 192, 0.055);
}

.focus-card-top {
  align-items: start;
  display: flex;
  gap: 24px;
  justify-content: space-between;
}

.focus-card-top > span {
  color: rgba(255, 255, 255, 0.52);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  max-width: 140px;
  text-transform: uppercase;
}

.focus-card-top strong {
  color: var(--acid);
  font-size: clamp(2rem, 3vw, 3.4rem);
  font-weight: 500;
  letter-spacing: -0.07em;
  line-height: .9;
  white-space: nowrap;
}

.focus-card-top small {
  color: rgba(255, 255, 255, 0.5);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0;
}

.focus-card h3 {
  font-size: clamp(1.3rem, 2vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.18;
  margin: 72px 0 18px;
}

.focus-card p {
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
  margin: 0;
}

.focus-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 28px;
}

.focus-tags span {
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.06em;
  padding: 5px 8px;
  text-transform: uppercase;
}

.focus-direction {
  align-items: start;
  display: grid;
  gap: 50px;
  grid-template-columns: .35fr 1.65fr;
  padding-top: 34px;
}

.focus-direction span {
  color: var(--mint);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.focus-direction p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  margin: 0;
  max-width: 780px;
}

/* Projects */
.project-filters {
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 6px;
  margin-bottom: 24px;
  padding-bottom: 14px;
}

.filter {
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  padding: 8px 13px;
  text-transform: uppercase;
}

.filter:hover,
.filter.active {
  background: var(--night);
  color: var(--white);
}

.project-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, 1fr);
}

.project-card {
  background: var(--paper);
  border: 1px solid rgba(16, 36, 48, 0.14);
  display: grid;
  min-height: 590px;
  overflow: hidden;
  position: relative;
  transition: border-color 220ms ease, box-shadow 220ms ease, transform 220ms ease;
}

.project-card:hover {
  border-color: rgba(16, 36, 48, 0.38);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.project-card.is-hidden {
  display: none;
}

.project-featured {
  grid-column: 1 / -1;
  grid-template-columns: 1.15fr .85fr;
  min-height: 540px;
}

.project-radar {
  grid-column: 1 / -1;
  grid-template-columns: .9fr 1.1fr;
  min-height: 500px;
}

.project-number {
  color: rgba(16, 36, 48, 0.42);
  font-family: var(--mono);
  font-size: 9px;
  left: 20px;
  position: absolute;
  top: 18px;
  z-index: 2;
}

.project-graphic {
  align-items: center;
  background: #dfe4db;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: center;
  min-height: 275px;
  overflow: hidden;
  padding: 28px;
}

.project-graphic svg {
  max-height: 260px;
  transition: transform 500ms cubic-bezier(.2,.65,.3,1);
  width: 100%;
}

.project-card:hover .project-graphic svg {
  transform: scale(1.035);
}

.project-featured .project-graphic {
  border-bottom: 0;
  border-right: 1px solid var(--line);
  min-height: 540px;
}

.project-radar .project-graphic {
  border-bottom: 0;
  border-right: 1px solid var(--line);
  min-height: 500px;
}

.project-content {
  align-self: end;
  padding: 30px;
}

.project-featured .project-content {
  align-self: center;
  padding: 50px;
}

.project-radar .project-content {
  align-self: center;
  padding: 50px;
}

.project-meta {
  color: var(--ink-soft);
  display: flex;
  font-family: var(--mono);
  font-size: 9px;
  justify-content: space-between;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-meta span:first-child {
  color: #1a7966;
}

.project-content h3 {
  font-size: clamp(1.45rem, 2.3vw, 2.35rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.13;
  margin: 18px 0 14px;
}

.project-content p {
  color: var(--ink-soft);
  font-size: 13px;
  margin: 0;
}

.method-line {
  border-top: 1px solid var(--line);
  display: grid;
  font-family: var(--mono);
  font-size: 9px;
  gap: 14px;
  margin-top: 34px;
  padding-top: 18px;
  text-transform: uppercase;
}

.method-line span {
  color: var(--ink-soft);
}

.method-line strong {
  font-weight: 500;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 24px;
}

.chip-row span {
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 8px;
  padding: 5px 8px;
  text-transform: uppercase;
}

.project-graphic path,
.project-graphic rect,
.project-graphic circle {
  vector-effect: non-scaling-stroke;
}

.graphic-vision { background: #dbe8e4; }
.camera-lines path { fill: none; stroke: rgba(16,36,48,.32); stroke-dasharray: 5 7; }
.feature-points circle { fill: var(--night); }
.feature-points circle:nth-child(3), .feature-points circle:nth-child(4) { fill: #258b77; }
.reprojection { fill: rgba(215,255,114,.44); stroke: #258b77; stroke-width: 2; }
.graphic-vision text, .graphic-control text, .graphic-tank text, .graphic-signal text, .graphic-radar text,
.graphic-multispectral text, .graphic-separation text, .graphic-embedded text {
  fill: var(--ink);
  font-family: var(--mono);
  font-size: 10px;
}

.graphic-control { background: #dce7ec; }
.drone path, .drone circle, .drone rect { fill: none; stroke: var(--night); stroke-width: 2; }
.drone rect { fill: var(--acid); }
.trajectory { fill: none; stroke: #258b77; stroke-dasharray: 6 7; stroke-width: 2; }

.graphic-tank { background: #e5e1d6; }
.tank { fill: none; stroke: var(--night); stroke-width: 2; }
.water { fill: rgba(95,224,192,.42); stroke: #258b77; }
.flow, .arrow { fill: none; stroke: var(--night); stroke-width: 2; }

.graphic-signal { background: #dce3dd; }
.axis { fill: none; stroke: rgba(16,36,48,.32); }
.noise { fill: none; opacity: .48; stroke: var(--night); }
.detected { fill: none; stroke: #258b77; stroke-width: 3; }
.threshold { fill: none; stroke: #b45e37; stroke-dasharray: 5 6; }

.graphic-radar { background: #d8e5e2; }
.radar-grid circle, .radar-grid path { fill: none; stroke: rgba(16,36,48,.18); }
.radar-sector { fill: rgba(95,224,192,.28); stroke: none; }
.radar-sweep { fill: none; stroke: #258b77; stroke-width: 2; }
.radar-targets circle { fill: var(--acid); stroke: var(--night); stroke-width: 2; }
.sonar-wave { fill: none; stroke: var(--night); stroke-width: 2; }
.decision-line { fill: none; stroke: #b45e37; stroke-dasharray: 5 6; }

.graphic-separation { background: #dfe7e0; }
.source-waves path, .output-waves path { fill: none; stroke: var(--night); stroke-width: 2; }
.output-waves path { stroke: #258b77; }
.mix-lines path { fill: none; stroke: rgba(16,36,48,.32); stroke-dasharray: 4 5; }
.matrix-block rect { fill: var(--night); stroke: var(--night); }
.matrix-block text { fill: var(--acid); font-size: 22px; }
.process-arrow { fill: none; stroke: #258b77; stroke-width: 2; }

.graphic-multispectral { background: #e1e7d5; }
.raster rect { fill: rgba(16,36,48,.07); stroke: rgba(16,36,48,.2); }
.raster rect:nth-child(2n) { fill: rgba(95,224,192,.25); }
.raster rect:nth-child(3n) { fill: rgba(215,255,114,.35); }
.region { fill: rgba(7,27,43,.78); stroke: var(--acid); stroke-width: 2; }

.graphic-embedded { background: #d9e2e6; }
.chip { fill: var(--night); stroke: var(--night); }
.graphic-embedded svg > text { fill: var(--white); }
.bus-lines path { stroke: #258b77; stroke-width: 2; }
.pins circle { fill: var(--acid); stroke: var(--night); }
.graphic-embedded .bus-lines + .pins + text,
.graphic-embedded .bus-lines + .pins + text ~ text { fill: var(--ink); }

/* Research */
.research {
  background-image:
    radial-gradient(circle at 12% 35%, rgba(143, 220, 241, .08), transparent 30%),
    linear-gradient(rgba(255,255,255,.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.026) 1px, transparent 1px);
  background-size: auto, 48px 48px, 48px 48px;
}

.research-grid {
  display: grid;
  gap: 60px;
  grid-template-columns: .58fr 1.42fr;
}

.research-aside {
  border-right: 1px solid var(--line-dark);
  min-height: 600px;
  padding-right: 50px;
}

.research-code {
  display: grid;
  gap: 13px;
  margin-top: 210px;
}

.research-code span {
  color: rgba(255,255,255,.18);
  font-family: var(--mono);
  font-size: clamp(1.2rem, 2vw, 2rem);
  letter-spacing: .08em;
}

.research-code span:nth-child(2) { color: rgba(95,224,192,.55); transform: translateX(15px); }
.research-code span:nth-child(3) { color: var(--acid); transform: translateX(30px); }
.research-code span:nth-child(4) { transform: translateX(45px); }

.research-copy {
  padding-top: 4px;
}

.research-label {
  color: var(--mint);
  display: block;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .1em;
  margin-bottom: 32px;
  text-transform: uppercase;
}

.research-copy h2 {
  color: var(--white);
}

.research-copy > p {
  color: rgba(255,255,255,.62);
  font-size: 15px;
  margin: 32px 0 0;
  max-width: 760px;
}

.research-principles {
  border-top: 1px solid var(--line-dark);
  display: grid;
  gap: 0;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 72px;
}

.research-principles article {
  min-height: 210px;
  padding: 26px 26px 0 0;
}

.research-principles article + article {
  border-left: 1px solid var(--line-dark);
  padding-left: 26px;
}

.research-principles span {
  color: var(--acid);
  font-family: var(--mono);
  font-size: 9px;
}

.research-principles h3 {
  font-size: 16px;
  font-weight: 500;
  margin: 45px 0 12px;
}

.research-principles p {
  color: rgba(255,255,255,.46);
  font-size: 12px;
  margin: 0;
}

/* Academic path */
.path-grid {
  display: grid;
  gap: 100px;
  grid-template-columns: .7fr 1.3fr;
}

.sticky-heading {
  align-self: start;
  position: sticky;
  top: 115px;
}

.sticky-heading h2 {
  font-size: clamp(2.2rem, 3.7vw, 4.2rem);
}

.sticky-heading > p:last-child {
  color: var(--ink-soft);
  font-size: 13px;
  margin: 28px 0 0;
  max-width: 360px;
}

.timeline {
  border-top: 1px solid var(--line);
}

.timeline-item {
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 32px;
  grid-template-columns: 110px 1fr;
  padding: 42px 0;
}

.timeline-date {
  color: #2b8c78;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.45;
}

.timeline-type {
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.timeline-content h3 {
  font-size: clamp(1.35rem, 2.2vw, 2rem);
  font-weight: 500;
  letter-spacing: -.04em;
  line-height: 1.2;
  margin: 13px 0;
}

.timeline-content p {
  color: var(--ink-soft);
  font-size: 13px;
  margin: 0;
  max-width: 650px;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.timeline-tags span {
  background: var(--paper-2);
  font-family: var(--mono);
  font-size: 8px;
  padding: 6px 9px;
  text-transform: uppercase;
}

/* Toolbox */
.toolbox-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(4, 1fr);
}

.toolbox-card {
  background: var(--paper);
  border: 1px solid var(--line);
  min-height: 390px;
  padding: 28px;
}

.toolbox-index {
  align-items: center;
  border: 1px solid var(--line);
  color: #2b8c78;
  display: inline-flex;
  font-family: var(--mono);
  font-size: 10px;
  height: 30px;
  justify-content: center;
  width: 30px;
}

.toolbox-card h3 {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -.035em;
  margin: 48px 0 24px;
}

.toolbox-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toolbox-card li {
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 11px;
  padding: 11px 0;
}

.language-list {
  display: grid;
}

.language-list div {
  align-items: center;
  border-top: 1px solid var(--line);
  display: flex;
  font-size: 11px;
  justify-content: space-between;
  padding: 11px 0;
}

.language-list strong {
  color: #2b8c78;
  font-family: var(--mono);
  font-size: 8px;
  font-weight: 500;
  text-transform: uppercase;
}

/* Contact & footer */
.contact {
  background-image: radial-gradient(circle at 80% 60%, rgba(95,224,192,.1), transparent 34%);
}

.contact-grid {
  align-items: start;
  display: grid;
  gap: 120px;
  grid-template-columns: .9fr 1.1fr;
}

.contact-copy h2 {
  color: var(--acid);
}

.contact-copy > p:last-child {
  color: rgba(255,255,255,.58);
  font-size: 14px;
  margin: 30px 0 0;
  max-width: 540px;
}

.contact-actions {
  border-top: 1px solid var(--line-dark);
}

.contact-link {
  align-items: center;
  border-bottom: 1px solid var(--line-dark);
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr auto;
  padding: 25px 4px;
  transition: padding 180ms ease;
}

.contact-link:hover {
  padding-inline: 12px;
}

.contact-link span {
  color: rgba(255,255,255,.42);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.contact-link strong {
  font-size: 14px;
  font-weight: 500;
}

.contact-link i {
  color: var(--acid);
  font-size: 22px;
  font-style: normal;
  grid-column: 2;
  grid-row: 1 / 3;
}

.site-footer {
  border-top: 1px solid var(--line-dark);
  padding-block: 34px;
}

.footer-grid {
  align-items: end;
  color: rgba(255,255,255,.42);
  display: grid;
  font-family: var(--mono);
  font-size: 8px;
  gap: 22px;
  grid-template-columns: 1.2fr 1fr auto auto;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.footer-grid div {
  display: grid;
}

.footer-grid strong {
  color: var(--white);
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0;
  margin-bottom: 5px;
  text-transform: none;
}

.footer-grid p {
  margin: 0;
  max-width: 340px;
}

.footer-grid a:hover {
  color: var(--acid);
}

/* Responsive */
@media (max-width: 1040px) {
  :root { --shell: min(100% - 40px, 980px); }
  .section { padding-block: 100px; }
  .hero-grid { grid-template-columns: 1fr; padding-top: 90px; }
  .hero-copy { max-width: 780px; }
  .hero-visual { height: 580px; margin-inline: auto; max-width: 700px; width: 100%; }
  .hero { min-height: unset; }
  .section-heading.split { gap: 45px; grid-template-columns: 1.25fr .75fr; }
  .focus-heading { gap: 55px; grid-template-columns: 1.2fr .8fr; }
  .toolbox-grid { grid-template-columns: repeat(2, 1fr); }
  .research-grid { grid-template-columns: .45fr 1.55fr; }
  .contact-grid { gap: 70px; }
}

@media (max-width: 860px) {
  .menu-toggle { display: block; }
  .nav-panel {
    align-items: stretch;
    background: var(--night);
    border-top: 1px solid var(--line-dark);
    display: none;
    flex-direction: column;
    gap: 36px;
    height: calc(100vh - 76px);
    inset: 76px 0 auto;
    padding: 42px 24px;
    position: fixed;
  }
  .nav-panel.open { display: flex; }
  .nav-links { align-items: stretch; flex-direction: column; gap: 4px; }
  .nav-links a { border-bottom: 1px solid var(--line-dark); font-size: 24px; padding: 15px 0; }
  .nav-actions { justify-content: space-between; }
  .menu-toggle[aria-expanded="true"] > span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .profile-grid, .path-grid, .contact-grid { grid-template-columns: 1fr; }
  .focus-heading, .focus-direction { grid-template-columns: 1fr; }
  .focus-heading { align-items: start; gap: 30px; }
  .focus-evidence { grid-template-columns: 1fr; margin-top: 52px; }
  .focus-card { min-height: 350px; }
  .focus-card + .focus-card { border-left: 0; border-top: 1px solid var(--line-dark); }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .metric:nth-child(4) { border-top: 1px solid var(--line); }
  .project-featured { grid-template-columns: 1fr; }
  .project-featured .project-graphic { border-bottom: 1px solid var(--line); border-right: 0; min-height: 370px; }
  .project-featured .project-content { padding: 34px; }
  .project-radar { grid-template-columns: 1fr; }
  .project-radar .project-graphic { border-bottom: 1px solid var(--line); border-right: 0; min-height: 340px; }
  .project-radar .project-content { padding: 34px; }
  .research-grid { grid-template-columns: 1fr; }
  .research-aside { border-bottom: 1px solid var(--line-dark); border-right: 0; min-height: 0; padding: 0 0 34px; }
  .research-code { display: flex; flex-wrap: wrap; margin-top: 60px; }
  .research-code span:nth-child(n) { font-size: 12px; transform: none; }
  .sticky-heading { position: static; }
  .contact-grid { gap: 55px; }
  .footer-grid { grid-template-columns: 1fr auto; }
  .footer-grid p { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  :root { --shell: calc(100% - 28px); }
  .section { padding-block: 78px; }
  .brand-copy { display: none; }
  .hero-grid { padding-top: 70px; }
  .hero h1 { font-size: clamp(3rem, 14vw, 5rem); }
  .hero-intro { font-size: 14px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { justify-content: space-between; width: 100%; }
  .hero-visual { height: 430px; min-height: 430px; }
  .system-map { transform: scale(1.15); }
  .visual-caption { display: none; }
  .hero-bottom { gap: 20px; }
  .hero-bottom span:first-child { max-width: 55%; }
  .section-heading.split { align-items: start; gap: 28px; grid-template-columns: 1fr; }
  .profile-grid { gap: 36px; }
  .metric-grid { grid-template-columns: 1fr 1fr; margin-top: 25px; }
  .metric { min-height: 145px; padding: 20px; }
  .metric-value { font-size: 2.5rem; }
  .metric-label { margin-top: 24px; }
  .project-filters { margin-inline: -14px; overflow-x: auto; padding-inline: 14px; scrollbar-width: none; }
  .project-filters::-webkit-scrollbar { display: none; }
  .filter { flex: 0 0 auto; }
  .project-grid { grid-template-columns: 1fr; }
  .project-featured { grid-column: auto; }
  .project-radar { grid-column: auto; }
  .project-card { min-height: 0; }
  .project-graphic, .project-featured .project-graphic, .project-radar .project-graphic { min-height: 255px; }
  .project-content, .project-featured .project-content, .project-radar .project-content { padding: 26px 22px; }
  .focus-card { min-height: 370px; padding: 26px 22px; }
  .focus-card h3 { margin-top: 54px; }
  .focus-direction { gap: 18px; }
  .research-principles { grid-template-columns: 1fr; }
  .research-principles article { min-height: 150px; padding: 24px 0; }
  .research-principles article + article { border-left: 0; border-top: 1px solid var(--line-dark); padding-left: 0; }
  .research-principles h3 { margin-top: 25px; }
  .timeline-item { gap: 12px; grid-template-columns: 72px 1fr; }
  .toolbox-grid { grid-template-columns: 1fr; }
  .toolbox-card { min-height: 0; }
  .contact-link { grid-template-columns: 1fr auto; }
  .contact-link strong { font-size: 11px; overflow-wrap: anywhere; }
  .footer-grid { align-items: start; grid-template-columns: 1fr; }
  .footer-grid p, .footer-grid a { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}