:root {
  --obsidian: #0a0a0b;
  --obsidian-elevated: #111113;
  --obsidian-border: #1a1a1e;
  --white: #f5f5f7;
  --white-muted: #8a8a94;
  --white-dim: #4a4a54;
  --neon: #00ff66;
  --neon-dim: rgba(0, 255, 102, 0.15);
  --neon-glow: rgba(0, 255, 102, 0.4);
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', 'SF Mono', 'Consolas', monospace;
  --max-width: 1200px;
  --section-gap: clamp(6rem, 12vw, 10rem);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  color: var(--white-muted);
  background: var(--obsidian);
  overflow-x: hidden;
}

body.has-custom-cursor,
body.has-custom-cursor * {
  cursor: none !important;
}

body.has-custom-cursor input,
body.has-custom-cursor textarea,
body.has-custom-cursor select {
  cursor: text !important;
}

::selection {
  background: var(--neon-dim);
  color: var(--white);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--white);
}

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

.container {
  width: min(100% - 3rem, var(--max-width));
  margin-inline: auto;
}

.telemetry {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white-dim);
  background: rgba(10, 10, 11, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--obsidian-border);
}

.telemetry__left,
.telemetry__right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.telemetry__dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 6px var(--neon-glow);
  animation: pulse 2.4s ease-in-out infinite;
}

.telemetry__dot--idle {
  background: var(--white-dim);
  box-shadow: none;
  animation: none;
}

.telemetry__item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.nav {
  position: fixed;
  top: 2.5rem;
  left: 0;
  right: 0;
  z-index: 99;
  padding: 1.25rem 0;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  height: 28px;
  width: auto;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav__links a {
  position: relative;
  color: var(--white-dim);
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--neon);
  transition: width var(--transition);
}

.nav__links a:hover::after,
.nav__links a.active::after {
  width: 100%;
}

.nav__links a.active {
  color: var(--white);
}

.nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--obsidian-border);
  color: var(--white);
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 8rem;
  overflow: hidden;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.45;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.hero__label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white-dim);
  margin-bottom: 2rem;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 1.75rem;
}

.hero__title em {
  font-style: normal;
  color: var(--neon);
}

.hero__desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--white-muted);
  max-width: 520px;
  margin-bottom: 3rem;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid var(--obsidian-border);
  background: transparent;
  color: var(--white);
  cursor: pointer;
  transition: all var(--transition);
}

.btn:hover {
  border-color: var(--neon);
  box-shadow: 0 0 20px var(--neon-dim);
}

.btn--primary {
  background: var(--white);
  color: var(--obsidian);
  border-color: var(--white);
}

.btn--primary:hover {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--obsidian);
  box-shadow: 0 0 24px var(--neon-glow);
}

.btn__arrow {
  transition: transform var(--transition);
}

.btn:hover .btn__arrow {
  transform: translateX(3px);
}

.hero__meta {
  display: flex;
  gap: 3rem;
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--obsidian-border);
}

.hero__stat-value {
  font-size: 1.5rem;
  color: var(--white);
  letter-spacing: -0.02em;
}

.hero__stat-label {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white-dim);
  margin-top: 0.25rem;
}

section {
  padding-block: var(--section-gap);
}

.section-header {
  margin-bottom: 4rem;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white-dim);
  margin-bottom: 1.25rem;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--white);
  max-width: 560px;
}

.section-desc {
  margin-top: 1rem;
  max-width: 480px;
  font-size: 14px;
}

.mission__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.mission__text {
  font-size: 15px;
  line-height: 1.9;
  color: var(--white-muted);
}

.mission__text p + p {
  margin-top: 1.5rem;
}

.mission__principles {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--obsidian-border);
}

.principle {
  padding: 1.75rem 2rem;
  border-bottom: 1px solid var(--obsidian-border);
  transition: background var(--transition);
}

.principle:last-child {
  border-bottom: none;
}

.principle:hover {
  background: var(--obsidian-elevated);
}

.principle__index {
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--neon);
  margin-bottom: 0.75rem;
}

.principle__title {
  font-size: 13px;
  color: var(--white);
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.principle__desc {
  font-size: 12px;
  line-height: 1.7;
  color: var(--white-dim);
}

.capabilities__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--obsidian-border);
  border: 1px solid var(--obsidian-border);
}

.capability {
  background: var(--obsidian);
  padding: 2.5rem 2rem;
  transition: background var(--transition);
}

.capability:hover {
  background: var(--obsidian-elevated);
}

.capability__icon {
  width: 40px;
  height: 40px;
  margin-bottom: 1.5rem;
  color: var(--neon);
}

.capability__title {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.capability__desc {
  font-size: 12px;
  line-height: 1.75;
  color: var(--white-dim);
}

.capability__tag {
  display: inline-block;
  margin-top: 1.25rem;
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--neon);
  opacity: 0.7;
}

.architecture {
  position: relative;
  border: 1px solid var(--obsidian-border);
  background: var(--obsidian-elevated);
  overflow: hidden;
}

.architecture__canvas {
  width: 100%;
  height: 420px;
  display: block;
}

.architecture__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  background: linear-gradient(transparent, rgba(10, 10, 11, 0.95));
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.architecture__label {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white-dim);
}

.architecture__metric-value {
  font-size: 1.25rem;
  color: var(--neon);
}

.architecture__metric-label {
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white-dim);
}

.architecture__metric {
  text-align: right;
}

.research__list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--obsidian-border);
}

.research__item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 2rem;
  align-items: center;
  padding: 2rem 0;
  border-bottom: 1px solid var(--obsidian-border);
  transition: padding-left var(--transition);
}

.research__item:hover {
  padding-left: 1rem;
}

.research__date {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--white-dim);
}

.research__title {
  font-size: 14px;
  color: var(--white);
  letter-spacing: 0.02em;
}

.research__category {
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--neon);
  opacity: 0.6;
}

.research__arrow {
  color: var(--white-dim);
  transition: color var(--transition), transform var(--transition);
}

.research__item:hover .research__arrow {
  color: var(--neon);
  transform: translateX(4px);
}

.research__more {
  margin-top: 2.5rem;
}

/* ── Custom cursor ── */
.cursor {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9999;
  width: 0;
  height: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

body.has-custom-cursor .cursor {
  opacity: 1;
}

.cursor__dot {
  position: absolute;
  width: 4px;
  height: 4px;
  margin: -2px 0 0 -2px;
  background: var(--neon);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--neon-glow);
  transition: transform 0.15s ease, background 0.2s ease;
}

.cursor__ring {
  position: absolute;
  width: 32px;
  height: 32px;
  margin: -16px 0 0 -16px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
              width 0.35s cubic-bezier(0.22, 1, 0.36, 1),
              height 0.35s cubic-bezier(0.22, 1, 0.36, 1),
              margin 0.35s cubic-bezier(0.22, 1, 0.36, 1),
              border-color 0.2s ease,
              background 0.2s ease;
}

.cursor__label {
  position: absolute;
  top: 0;
  left: 0;
  margin-top: 22px;
  margin-left: -20px;
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--neon);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.cursor.is-pointer .cursor__ring {
  width: 48px;
  height: 48px;
  margin: -24px 0 0 -24px;
  border-color: var(--neon);
  background: var(--neon-dim);
}

.cursor.is-view .cursor__ring {
  width: 56px;
  height: 56px;
  margin: -28px 0 0 -28px;
  border-color: rgba(255, 255, 255, 0.8);
}

.cursor.is-view .cursor__label {
  opacity: 1;
}

.cursor.is-external .cursor__ring {
  width: 44px;
  height: 44px;
  margin: -22px 0 0 -22px;
  border-color: var(--neon);
}

.cursor.is-external .cursor__label {
  opacity: 1;
}

.cursor.is-hidden {
  opacity: 0 !important;
}

.cursor.is-click .cursor__dot {
  transform: scale(0.5);
}

.cursor.is-click .cursor__ring {
  transform: scale(0.85);
}

/* ── Inner pages ── */
.page {
  padding-top: 9rem;
  padding-bottom: var(--section-gap);
  min-height: 80vh;
}

.page-header {
  margin-bottom: 4rem;
}

.page-header__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 1rem;
}

.page-header__desc {
  max-width: 560px;
  font-size: 15px;
  line-height: 1.8;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white-dim);
  margin-bottom: 3rem;
}

.breadcrumb a:hover {
  color: var(--neon);
}

.breadcrumb__sep {
  opacity: 0.4;
}

.breadcrumb__current {
  color: var(--white-muted);
}

.article__header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--obsidian-border);
}

.article__title {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--white);
  line-height: 1.25;
  margin: 1rem 0;
  max-width: 720px;
}

.article__abstract {
  font-size: 15px;
  line-height: 1.8;
  max-width: 640px;
}

.article__body {
  max-width: 680px;
  font-size: 14px;
  line-height: 1.9;
}

.article__body h2 {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  margin: 2.5rem 0 1rem;
}

.article__body p {
  margin-bottom: 1.25rem;
}

.article__body ul {
  margin: 0 0 1.25rem 1.25rem;
  color: var(--white-muted);
}

.article__body li {
  margin-bottom: 0.5rem;
}

.article__body a {
  color: var(--neon);
  border-bottom: 1px solid var(--neon-dim);
}

.article__body a:hover {
  border-bottom-color: var(--neon);
}

.article__footer {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--obsidian-border);
}

.contact {
  border-top: 1px solid var(--obsidian-border);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact__email {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  color: var(--white);
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--obsidian-border);
  padding-bottom: 0.5rem;
  display: inline-block;
  transition: color var(--transition), border-color var(--transition);
}

.contact__email:hover {
  color: var(--neon);
  border-color: var(--neon);
}

.contact__channels {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact__channel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--obsidian-border);
  font-size: 12px;
}

.contact__channel-label {
  color: var(--white-dim);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.contact__channel-value {
  color: var(--white);
}

.footer {
  padding: 3rem 0;
  border-top: 1px solid var(--obsidian-border);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer__logo {
  height: 22px;
  opacity: 0.6;
}

.footer__copy {
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--white-dim);
}

.footer__links {
  display: flex;
  gap: 2rem;
  list-style: none;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

@media (prefers-reduced-motion: reduce) {
  body.has-custom-cursor,
  body.has-custom-cursor * {
    cursor: auto !important;
  }

  .cursor {
    display: none;
  }
}

@media (max-width: 900px) {
  .mission__grid,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

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

  .research__item {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .hero__meta {
    flex-direction: column;
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 11, 0.97);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    font-size: 13px;
  }

  .nav__links.open {
    display: flex;
  }

  .nav__toggle {
    display: block;
    z-index: 101;
  }

  .telemetry__right .telemetry__item:not(:last-child) {
    display: none;
  }

  body.has-custom-cursor,
  body.has-custom-cursor * {
    cursor: auto !important;
  }

  .cursor {
    display: none;
  }
}