:root {
  color-scheme: dark;
  --ink: #02050a;
  --ink-soft: #070c14;
  --glass: rgba(5, 10, 18, 0.72);
  --line: rgba(151, 198, 255, 0.16);
  --text: #edf7ff;
  --muted: #8d9caf;
  --blue: #48a9ff;
  --cyan: #93ecff;
  --violet: #9b7dff;
  --max: 1440px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 50% 18%, rgba(17, 73, 134, 0.12), transparent 35rem),
    var(--ink);
  color: var(--text);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
button { font: inherit; }
section[id] { scroll-margin-top: 76px; }
::selection { background: rgba(83, 184, 255, 0.28); color: white; }

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 1rem;
  left: 1rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--cyan);
  background: var(--ink);
  transform: translateY(-200%);
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  display: flex;
  width: 100%;
  height: 78px;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.2rem, 4vw, 4.5rem);
  border-bottom: 1px solid rgba(147, 236, 255, 0.1);
  background: linear-gradient(180deg, rgba(1, 4, 8, 0.92), rgba(1, 4, 8, 0.62));
  backdrop-filter: blur(16px);
  transition: background 220ms ease, border-color 220ms ease;
}

.site-header.is-scrolled {
  border-bottom-color: rgba(147, 236, 255, 0.16);
  background: rgba(1, 4, 8, 0.9);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  text-decoration: none;
}

.header-logo {
  display: block;
  width: clamp(136px, 12vw, 174px);
  height: auto;
  margin-left: -0.45rem;
  filter: saturate(0.95) contrast(1.04) drop-shadow(0 0 10px rgba(53, 175, 238, 0.18));
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.5rem, 3.2vw, 3.5rem);
}

.site-nav a {
  position: relative;
  padding: 0.5rem 0;
  color: #afbac7;
  font-size: 0.7rem;
  letter-spacing: 0.21em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 180ms ease;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: var(--cyan);
  content: "";
  opacity: 0;
  transform: scaleX(0.25);
  transition: opacity 180ms ease, transform 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible { color: white; }
.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a[aria-current="true"]::after { opacity: 1; transform: scaleX(1); }
.site-nav a[aria-current="true"] { color: white; }

.nav-toggle { display: none; }

.hero {
  position: relative;
  display: grid;
  min-height: 100svh;
  place-items: center;
  overflow: hidden;
  padding: 8.4rem 0 5.6rem;
  isolation: isolate;
}

.hero::before {
  position: absolute;
  z-index: -2;
  inset: 0;
  background:
    radial-gradient(circle at 50% 58%, rgba(23, 102, 255, 0.16), transparent 24%),
    radial-gradient(ellipse at 50% 52%, transparent 0 35%, rgba(1, 3, 7, 0.72) 76%);
  content: "";
}

.hero-grid {
  position: absolute;
  z-index: -3;
  inset: 0;
  background-image:
    linear-gradient(rgba(117, 190, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(117, 190, 255, 0.025) 1px, transparent 1px);
  background-size: 74px 74px;
  mask-image: linear-gradient(to bottom, transparent, black 18%, black 70%, transparent);
}

.energy-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.energy-canvas--back { z-index: 2; }
.energy-canvas--front { z-index: 4; mix-blend-mode: screen; opacity: 0.82; }

.hero-copy {
  position: absolute;
  z-index: 3;
  top: clamp(7.3rem, 15vh, 10rem);
  width: 100%;
  padding: 0 1.2rem;
  text-align: center;
  pointer-events: none;
}

.eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin: 0 0 0.65rem;
  color: var(--cyan);
  font-size: 0.62rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

.eyebrow span { width: 20px; height: 1px; background: currentColor; box-shadow: 0 0 8px currentColor; }

.hero-logo {
  position: relative;
  width: min(62vw, 760px);
  margin: -1.2rem auto -1.9rem;
  isolation: isolate;
  filter: drop-shadow(0 0 18px rgba(52, 166, 255, 0.2));
  transition: filter 180ms ease;
}

.hero-logo img {
  position: relative;
  z-index: 2;
  display: block;
  width: 100%;
  height: auto;
  filter: saturate(0.98) contrast(1.04) brightness(1.04);
}

.logo-charge {
  position: absolute;
  z-index: 1;
  inset: 24% 6% 18%;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(81, 202, 255, 0.18), rgba(30, 93, 255, 0.05) 46%, transparent 73%);
  opacity: 0.42;
  transform: scaleX(0.9);
  filter: blur(18px);
  animation: logo-field 5.8s ease-in-out infinite;
}

.core-stage {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1720px;
  margin-top: clamp(8rem, 17vh, 11rem);
}

.core-image {
  display: block;
  width: 100%;
  height: auto;
  min-height: 360px;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.95) contrast(1.09) brightness(0.92);
  animation: core-breathe 6.8s ease-in-out infinite;
}

.core-reactor,
.core-flare {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 44%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  mix-blend-mode: screen;
}

.core-reactor {
  width: clamp(190px, 32vw, 510px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0 4%, rgba(104, 210, 255, 0.15) 18%, rgba(42, 113, 255, 0.06) 42%, transparent 69%);
  box-shadow: 0 0 55px rgba(64, 169, 255, 0.16);
  animation: reactor-pressure 4.9s ease-in-out infinite;
}

.core-flare {
  width: clamp(280px, 52vw, 850px);
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(80, 155, 255, 0.1) 18%, #d9f8ff 50%, rgba(80, 155, 255, 0.1) 82%, transparent);
  box-shadow: 0 0 14px #73caff, 0 0 34px rgba(61, 118, 255, 0.56);
  opacity: 0.34;
  animation: flare-drift 7.4s ease-in-out infinite;
}

.core-vignette {
  position: absolute;
  inset: -2px;
  background:
    linear-gradient(90deg, #02050a 0%, transparent 12%, transparent 88%, #02050a 100%),
    linear-gradient(180deg, #02050a 0%, transparent 20%, transparent 75%, #02050a 100%);
  pointer-events: none;
}

.hero.is-surging .core-image { filter: saturate(1.08) contrast(1.13) brightness(1.02); }
.hero.is-surging .core-reactor { opacity: 1; transform: translate(-50%, -50%) scale(1.07); }
.hero.is-surging .core-flare { opacity: 0.68; transform: translate(-50%, -50%) scaleX(1.14); }
.hero.is-surging .hero-logo { filter: drop-shadow(0 0 28px rgba(103, 204, 255, 0.48)); }
.hero.is-surging .logo-charge { opacity: 0.86; transform: scaleX(1.04); }

@keyframes core-breathe {
  0%, 100% { filter: saturate(0.94) contrast(1.09) brightness(0.9); }
  48% { filter: saturate(1.01) contrast(1.11) brightness(0.96); }
}

@keyframes reactor-pressure {
  0%, 100% { opacity: 0.46; transform: translate(-50%, -50%) scale(0.97); }
  52% { opacity: 0.78; transform: translate(-50%, -50%) scale(1.035); }
}

@keyframes flare-drift {
  0%, 100% { opacity: 0.22; transform: translate(-50%, -50%) scaleX(0.86); }
  50% { opacity: 0.46; transform: translate(-50%, -50%) scaleX(1.04); }
}

@keyframes logo-field {
  0%, 100% { opacity: 0.32; transform: scaleX(0.88) scaleY(0.92); }
  54% { opacity: 0.58; transform: scaleX(1.03) scaleY(1.06); }
}

.hero-statement {
  position: absolute;
  z-index: 5;
  right: clamp(1.3rem, 5vw, 5rem);
  bottom: 2.3rem;
  left: clamp(1.3rem, 5vw, 5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 1.1rem;
}

.hero-statement p { margin: 0; color: #afbdcb; font-size: 0.8rem; letter-spacing: 0.08em; }
.hero-statement a { color: var(--cyan); font-size: 0.65rem; letter-spacing: 0.2em; text-decoration: none; text-transform: uppercase; }
.hero-statement a span { display: inline-block; margin-left: 0.6rem; transition: transform 180ms ease; }
.hero-statement a:hover span { transform: translateY(3px); }

.introduction {
  position: relative;
  display: grid;
  width: min(calc(100% - 3rem), var(--max));
  min-height: 70vh;
  margin: 0 auto;
  grid-template-columns: 0.7fr 2fr 0.8fr;
  align-items: center;
  gap: clamp(2rem, 6vw, 7rem);
  border-top: 1px solid var(--line);
}

.section-index {
  align-self: start;
  margin-top: 4rem;
  color: #5d6b7d;
  font-size: 0.64rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.intro-content h2 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 5.7rem);
  font-weight: 520;
  letter-spacing: -0.045em;
  line-height: 1.02;
}

.intro-content p {
  max-width: 660px;
  margin: 2rem 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.45vw, 1.2rem);
  line-height: 1.75;
}

.intro-content .intro-note {
  max-width: 590px;
  margin-top: 1.2rem;
  color: #65768a;
  font-size: 0.86rem;
  line-height: 1.75;
}

.signal { display: flex; height: 190px; align-items: center; justify-content: center; gap: 8px; opacity: 0.56; }
.signal span { width: 1px; height: 28%; background: linear-gradient(transparent, var(--cyan), transparent); box-shadow: 0 0 12px var(--blue); }
.signal span:nth-child(2), .signal span:nth-child(4) { height: 56%; }
.signal span:nth-child(3) { height: 100%; }

.foundation {
  position: relative;
  width: min(calc(100% - 3rem), var(--max));
  margin: 0 auto;
  padding: clamp(6rem, 11vw, 10rem) 0;
  overflow: hidden;
  border-top: 1px solid var(--line);
}

.foundation::before {
  position: absolute;
  z-index: -1;
  top: 12%;
  right: -18vw;
  width: 48vw;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27, 103, 186, 0.1), transparent 68%);
  content: "";
  pointer-events: none;
}

.section-heading {
  display: grid;
  grid-template-columns: 0.65fr 1.6fr 0.9fr;
  align-items: end;
  gap: clamp(2rem, 5vw, 6rem);
}

.section-heading .section-index { margin: 0; align-self: start; }

.section-heading h2 {
  max-width: 700px;
  margin: 0;
  font-size: clamp(2.5rem, 5vw, 5rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1;
}

.section-heading > p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.principles {
  display: grid;
  margin-top: clamp(4rem, 8vw, 7rem);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.principle {
  position: relative;
  min-height: 260px;
  padding: clamp(2rem, 4vw, 3.7rem);
  overflow: hidden;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(13, 26, 43, 0.44), rgba(2, 6, 11, 0.08));
  transition: background 220ms ease, border-color 220ms ease;
}

.principle::after {
  position: absolute;
  right: -45px;
  bottom: -45px;
  width: 130px;
  height: 130px;
  border: 1px solid rgba(116, 210, 255, 0.08);
  content: "";
  transform: rotate(45deg);
}

.principle:hover {
  border-color: rgba(129, 219, 255, 0.28);
  background: linear-gradient(145deg, rgba(17, 43, 70, 0.58), rgba(2, 6, 11, 0.12));
}

.principle > span {
  display: block;
  margin-bottom: 3.5rem;
  color: var(--cyan);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
}

.principle h3 {
  margin: 0;
  font-size: clamp(1.35rem, 2.2vw, 2rem);
  font-weight: 520;
  letter-spacing: -0.02em;
}

.principle p {
  max-width: 470px;
  margin: 1rem 0 0;
  color: #78899d;
  font-size: 0.9rem;
  line-height: 1.72;
}

.about {
  position: relative;
  width: min(calc(100% - 3rem), var(--max));
  min-height: 88vh;
  margin: 0 auto;
  padding: clamp(6rem, 12vw, 11rem) 0 5rem;
  overflow: hidden;
  border-top: 1px solid var(--line);
}

.about > .section-index { margin: 0; }

.about-copy {
  position: relative;
  z-index: 2;
  display: grid;
  margin-top: clamp(4rem, 8vw, 8rem);
  grid-template-columns: 1.6fr 0.8fr;
  align-items: end;
  gap: clamp(3rem, 9vw, 10rem);
}

.about-copy h2 {
  max-width: 890px;
  margin: 0;
  font-size: clamp(3rem, 7.2vw, 7.5rem);
  font-weight: 450;
  letter-spacing: -0.055em;
  line-height: 0.96;
}

.about-text p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.75;
}

.about-text p + p { margin-top: 1.35rem; color: #65768a; }

.about-field {
  position: absolute;
  z-index: 0;
  top: 10%;
  right: -6%;
  width: min(44vw, 600px);
  aspect-ratio: 1;
  border: 1px solid rgba(96, 189, 255, 0.07);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(70, 174, 255, 0.09), transparent 58%),
    repeating-radial-gradient(circle, transparent 0 16%, rgba(104, 198, 255, 0.05) 16.2% 16.5%);
  opacity: 0.7;
}

.about-field::before,
.about-field::after {
  position: absolute;
  top: 50%;
  left: 50%;
  background: rgba(121, 215, 255, 0.12);
  content: "";
  transform: translate(-50%, -50%);
}

.about-field::before { width: 120%; height: 1px; }
.about-field::after { width: 1px; height: 120%; }
.about-field span { position: absolute; width: 5px; height: 5px; border-radius: 50%; background: #9eeaff; box-shadow: 0 0 14px #48a9ff; }
.about-field span:nth-child(1) { top: 18%; left: 49%; }
.about-field span:nth-child(2) { top: 48%; right: 4%; }
.about-field span:nth-child(3) { bottom: 12%; left: 35%; }
.about-field span:nth-child(4) { top: 42%; left: 18%; }
.about-field span:nth-child(5) { top: 66%; right: 22%; }

.discipline-band {
  position: absolute;
  right: 0;
  bottom: 4.5rem;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: #8090a2;
  font-size: 0.62rem;
  letter-spacing: 0.19em;
  text-transform: uppercase;
}

.discipline-band span + span::before {
  display: inline-block;
  width: 4px;
  height: 4px;
  margin-right: clamp(1.2rem, 4vw, 4rem);
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--blue);
  content: "";
  vertical-align: middle;
}

.site-footer {
  display: grid;
  width: min(calc(100% - 3rem), var(--max));
  margin: 0 auto;
  padding: 2.2rem 0 3rem;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
  color: #58687a;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

.site-footer p { margin: 0; }
.site-footer p:last-child { justify-self: end; }
.footer-brand { color: #a8bdcf; font-weight: 650; text-decoration: none; }

.has-js .reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 700ms ease, transform 850ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

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

@media (max-width: 800px) {
  .site-header { height: 68px; }
  .nav-toggle {
    position: relative;
    z-index: 2;
    display: grid;
    width: 42px;
    height: 42px;
    place-content: center;
    gap: 7px;
    border: 0;
    background: transparent;
    color: white;
  }
  .nav-toggle span { display: block; width: 22px; height: 1px; background: currentColor; transition: transform 180ms ease; }
  .nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .site-nav {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    width: min(78vw, 320px);
    height: 100svh;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 4rem;
    background: rgba(2, 6, 12, 0.97);
    transform: translateX(102%);
    transition: transform 220ms ease;
  }
  .site-nav[data-open="true"] { transform: translateX(0); }
  .site-nav a { font-size: 0.8rem; }
  .hero { min-height: 760px; padding-top: 8rem; }
  .hero-copy { top: 8.6rem; }
  .hero-logo { width: min(calc(100vw - 3rem), 520px); margin-top: -0.75rem; margin-bottom: -1.25rem; }
  .core-stage { width: 150%; margin-top: 6rem; }
  .core-image { min-height: 390px; }
  .hero-statement { bottom: 2rem; align-items: flex-end; gap: 2rem; }
  .hero-statement p { max-width: 180px; line-height: 1.5; }
  .introduction { min-height: 78vh; grid-template-columns: 1fr; align-content: center; gap: 2rem; }
  .section-index { margin: 0; }
  .signal { position: absolute; right: 0; bottom: 3rem; height: 95px; opacity: 0.25; }
  .section-heading { grid-template-columns: 1fr; align-items: start; gap: 1.5rem; }
  .section-heading > p:last-child { max-width: 520px; }
  .principles { grid-template-columns: 1fr; }
  .principle { min-height: 230px; }
  .about { min-height: 850px; }
  .about-copy { grid-template-columns: 1fr; align-items: start; gap: 2.5rem; }
  .about-text { max-width: 560px; }
  .about-field { top: 6%; right: -38%; width: 100vw; opacity: 0.38; }
  .discipline-band { bottom: 3rem; flex-direction: column; align-items: flex-start; gap: 0.9rem; }
  .discipline-band span + span::before { margin-right: 1rem; }
  .site-footer { grid-template-columns: 1fr; gap: 0.8rem; padding-top: 2rem; }
  .site-footer p:last-child { justify-self: start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
  .core-image,
  .core-reactor,
  .core-flare,
  .logo-charge { animation: none !important; }
  .core-reactor { opacity: 0.5; }
  .core-flare { opacity: 0.24; }
  .has-js .reveal { opacity: 1; transform: none; transition: none; }
}