:root {
  color-scheme: dark;
  --bg: #05070b;
  --bg-soft: #090d12;
  --surface: rgba(16, 23, 34, 0.72);
  --surface-strong: rgba(18, 28, 42, 0.9);
  --line: rgba(141, 247, 255, 0.18);
  --line-strong: rgba(0, 229, 255, 0.38);
  --text: #e6f1ff;
  --muted: #8b9bad;
  --cyan: #00e5ff;
  --magenta: #ff2bd6;
  --amber: #f6c85f;
  --green: #58ff9a;
  --shadow-cyan: 0 0 34px rgba(0, 229, 255, 0.22);
  --shadow-magenta: 0 0 42px rgba(255, 43, 214, 0.14);
  --radius: 8px;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --display: "Space Grotesk", Sora, Inter, ui-sans-serif, system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 18% 12%, rgba(0, 229, 255, 0.12), transparent 30vw),
    radial-gradient(circle at 82% 16%, rgba(255, 43, 214, 0.11), transparent 26vw),
    linear-gradient(180deg, #05070b 0%, #081018 45%, #05070b 100%);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.045) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.75), transparent 85%);
  animation: grid-drift 26s linear infinite;
}

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

#lab-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  opacity: 0.72;
}

.ambient {
  position: fixed;
  z-index: -1;
  width: 38rem;
  height: 38rem;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.24;
  pointer-events: none;
}

.ambient-cyan {
  right: -12rem;
  top: 8rem;
  background: var(--cyan);
}

.ambient-magenta {
  left: -12rem;
  bottom: 10rem;
  background: var(--magenta);
}

.scanline {
  position: fixed;
  inset-inline: 0;
  top: -12%;
  z-index: 4;
  height: 10rem;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(0, 229, 255, 0.08), transparent);
  transform: translateY(-20vh);
  animation: scanline 13s ease-in-out infinite;
}

.site-header,
.site-footer,
.section {
  width: min(1120px, calc(100% - 32px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 18px 0;
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  font-family: var(--mono);
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-mark {
  width: 1rem;
  height: 1rem;
  border: 1px solid var(--cyan);
  border-radius: 3px;
  background:
    linear-gradient(90deg, transparent 42%, rgba(0, 229, 255, 0.8) 42% 58%, transparent 58%),
    linear-gradient(0deg, transparent 42%, rgba(255, 43, 214, 0.8) 42% 58%, transparent 58%);
  box-shadow: var(--shadow-cyan);
  transform: rotate(45deg);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.nav a {
  padding: 0.45rem 0;
  transition: color 160ms ease, text-shadow 160ms ease;
}

.nav a:hover {
  color: var(--cyan);
  text-shadow: 0 0 18px rgba(0, 229, 255, 0.45);
}

.lang-toggle {
  display: inline-flex;
  gap: 0.25rem;
  border: 1px solid rgba(0, 229, 255, 0.22);
  border-radius: 999px;
  padding: 0.2rem;
  background: rgba(5, 12, 18, 0.72);
}

.lang-toggle button {
  min-width: 38px;
  border: 0;
  border-radius: 999px;
  padding: 0.36rem 0.55rem;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.72rem;
}

.lang-toggle button.active {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.28), rgba(255, 43, 214, 0.18));
  color: var(--text);
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.18);
}

.section {
  padding: 88px 0;
}

.hero {
  min-height: calc(100vh - 84px);
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.62fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  padding-top: 34px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 1rem;
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 880px;
  margin-bottom: 1.3rem;
  font-family: var(--display);
  font-size: clamp(3rem, 8vw, 7.4rem);
  line-height: 0.92;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0.8rem;
  font-family: var(--display);
  font-size: clamp(2rem, 4.5vw, 4.4rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 0.65rem;
  font-family: var(--display);
  font-size: 1.1rem;
  line-height: 1.2;
}

.accent-text {
  display: block;
  color: transparent;
  background: linear-gradient(90deg, var(--cyan), var(--magenta) 54%, var(--amber));
  -webkit-background-clip: text;
  background-clip: text;
  filter: drop-shadow(0 0 22px rgba(0, 229, 255, 0.18));
}

.hero-subtitle {
  max-width: 700px;
  margin-bottom: 1.6rem;
  color: #bdd0e4;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
}

.status-row,
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.status-chip {
  border: 1px solid rgba(0, 229, 255, 0.22);
  border-radius: 999px;
  padding: 0.42rem 0.72rem;
  background: rgba(5, 12, 18, 0.72);
  color: #b8d4e6;
  font-family: var(--mono);
  font-size: 0.76rem;
}

.hero-actions {
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 0.72rem 1rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

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

.button-primary {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.22), rgba(255, 43, 214, 0.16));
  box-shadow: var(--shadow-cyan);
}

.button-ghost {
  background: rgba(5, 12, 18, 0.6);
  color: #c9d9e8;
}

.system-panel,
.principle-card,
.module-card,
.contact {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(16, 23, 34, 0.76), rgba(7, 12, 18, 0.7));
  box-shadow: 0 18px 80px rgba(0, 0, 0, 0.32);
  overflow: hidden;
}

.system-panel::before,
.principle-card::before,
.module-card::before,
.contact::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.18), transparent 34%, rgba(255, 43, 214, 0.13));
  opacity: 0;
  transition: opacity 180ms ease;
}

.system-panel:hover::before,
.principle-card:hover::before,
.module-card:hover::before,
.contact:hover::before {
  opacity: 1;
}

.system-panel {
  padding: 1.2rem;
}

.panel-topline {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.live-dot {
  position: relative;
  color: var(--green);
}

.live-dot::before {
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  margin-right: 0.45rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 16px rgba(88, 255, 154, 0.72);
  content: "";
}

.terminal {
  min-height: 104px;
  border: 1px solid rgba(0, 229, 255, 0.18);
  border-radius: 6px;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.32);
  font-family: var(--mono);
  color: #bfeeff;
}

.terminal-line {
  display: flex;
  gap: 0.6rem;
}

.prompt {
  color: var(--magenta);
}

.signal-stack {
  display: grid;
  gap: 0.8rem;
  margin-top: 1.2rem;
}

.signal-row {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  align-items: center;
  gap: 0.8rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.76rem;
  text-transform: uppercase;
}

.bar {
  height: 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.bar i {
  display: block;
  width: var(--w);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.42);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(320px, 0.88fr);
  gap: clamp(1.6rem, 5vw, 5rem);
  align-items: start;
}

.section-copy {
  color: #bed0df;
  font-size: 1.06rem;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 2rem;
}

.section-heading p {
  color: var(--muted);
  font-size: 1.02rem;
}

.principle-grid,
.module-grid {
  display: grid;
  gap: 1rem;
}

.principle-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.module-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.principle-card,
.module-card {
  padding: 1.15rem;
  transition: transform 170ms ease, border-color 170ms ease, box-shadow 170ms ease;
}

.principle-card:hover,
.module-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-cyan), var(--shadow-magenta);
  transform: translateY(-4px);
}

.principle-card p,
.module-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.card-index,
.module-code {
  display: inline-block;
  margin-bottom: 1.6rem;
  color: var(--amber);
  font-family: var(--mono);
  font-size: 0.76rem;
}

.module-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.1rem;
}

.module-code {
  margin-bottom: 0;
}

.module-pulse {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 18px rgba(88, 255, 154, 0.8);
  animation: pulse 2.8s ease-in-out infinite;
}

.method-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.9rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: method;
}

.method-list li {
  position: relative;
  min-height: 170px;
  border-top: 1px solid var(--line-strong);
  padding-top: 1rem;
  counter-increment: method;
}

.method-list li::before {
  display: block;
  margin-bottom: 1.8rem;
  color: rgba(0, 229, 255, 0.7);
  font-family: var(--mono);
  font-size: 0.75rem;
  content: "0" counter(method);
}

.method-list span {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--display);
  font-size: 1rem;
  font-weight: 700;
}

.method-list p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(280px, 0.7fr);
  gap: 2rem;
  align-items: center;
  padding: clamp(1.3rem, 4vw, 2.4rem);
}

.contact p {
  color: #c1d0df;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
}

.contact-link {
  display: inline-flex;
  width: fit-content;
  border-bottom: 1px solid rgba(0, 229, 255, 0.65);
  color: var(--cyan);
  font-family: var(--mono);
  word-break: break-word;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line);
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
}

@keyframes grid-drift {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 54px 54px;
  }
}

@keyframes scanline {
  0%, 62%, 100% {
    transform: translateY(-22vh);
    opacity: 0;
  }
  68% {
    opacity: 1;
  }
  82% {
    transform: translateY(112vh);
    opacity: 0;
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.55;
    transform: scale(0.86);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 920px) {
  .nav {
    display: none;
  }

  .site-header {
    align-items: flex-start;
  }

  .hero,
  .section-grid,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 76px;
  }

  .principle-grid,
  .module-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .method-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .site-header,
  .site-footer,
  .section {
    width: min(100% - 24px, 1120px);
  }

  .section {
    padding: 64px 0;
  }

  h1 {
    font-size: clamp(2.65rem, 16vw, 4.2rem);
  }

  .principle-grid,
  .module-grid,
  .method-list {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  #lab-canvas,
  .scanline,
  .ambient {
    display: none;
  }
}