:root {
  --black: #030d1a;
  --dark: #061525;
  --dark-soft: #0a1e32;
  --cyan: #00d4ff;
  --blue: #0070f3;
  --white: #f0f8ff;
  --gray: #6b8fa8;
  --border: rgba(0, 212, 255, 0.18);
  --surface: rgba(7, 25, 42, 0.86);
  --surface-strong: rgba(8, 29, 49, 0.96);
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --ease: cubic-bezier(0.85, 0, 0.15, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(circle at top left, rgba(0, 112, 243, 0.18), transparent 30%),
    radial-gradient(circle at top right, rgba(0, 212, 255, 0.14), transparent 28%),
    linear-gradient(180deg, #04111f 0%, #030d1a 36%, #061525 100%);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

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

ul {
  list-style: none;
}

main {
  display: block;
}

.skip-link {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 12px 16px;
  background: var(--cyan);
  color: var(--black);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transform: translateY(-160%);
  transition: transform 0.2s ease;
}

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

.container {
  width: min(1360px, calc(100% - 8vw));
  margin: 0 auto;
}

.section {
  padding: 120px 0;
  position: relative;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.section[id] {
  scroll-margin-top: 120px;
}

.title-display {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.04em;
  line-height: 0.95;
}

.title-section {
  font-size: clamp(2rem, 4vw, 3.8rem);
  margin-bottom: 26px;
}

.tag-telemetry {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 20px;
}

.tag-telemetry::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--cyan);
  flex-shrink: 0;
}

.eyebrow-copy,
.body-mono {
  color: var(--gray);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.9;
}

.btn-sharp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 28px;
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: color 0.35s ease;
  border: 1px solid transparent;
  min-height: 50px;
}

.btn-sharp::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--white);
  transform: translateX(-105%);
  transition: transform 0.35s var(--ease);
  z-index: -1;
}

.btn-sharp:hover::before,
.btn-sharp:focus-visible::before {
  transform: translateX(0);
}

.btn-primary {
  background: var(--cyan);
  color: var(--black);
}

.btn-secondary {
  border-color: var(--border);
  color: var(--white);
  background: transparent;
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  color: var(--black);
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 20px 4vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(3, 13, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(0, 212, 255, 0.2);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.24rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.nav-links,
.nav-right,
.lang-switcher {
  display: flex;
  align-items: center;
}

.nav-links {
  gap: 30px;
}

.nav-links a {
  color: var(--gray);
  transition: color 0.25s ease;
  position: relative;
}

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

.nav-links a::before {
  content: '>';
  position: absolute;
  left: -14px;
  color: var(--cyan);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.nav-links a:hover::before,
.nav-links a:focus-visible::before {
  opacity: 1;
}

.nav-right {
  gap: 20px;
}

.lang-switcher {
  gap: 8px;
}

.lang-btn {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--gray);
  font: inherit;
  cursor: pointer;
  padding: 0;
}

.lang-btn.active,
.lang-btn:hover,
.lang-btn:focus-visible {
  color: var(--cyan);
}

.lang-sep {
  color: rgba(255, 255, 255, 0.2);
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.08);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.nav-toggle span {
  width: 20px;
  height: 1px;
  background: var(--white);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-mobile {
  position: fixed;
  inset: 78px 0 auto;
  z-index: 95;
  background: rgba(3, 13, 26, 0.98);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding: 28px 4vw 36px;
  display: none;
}

.nav-mobile.open {
  display: block;
}

.nav-mobile ul {
  display: grid;
  gap: 16px;
  margin-bottom: 28px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.84rem;
}

.nav-mobile-footer {
  display: grid;
  gap: 20px;
}

.hero {
  padding: 168px 0 104px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(110deg, rgba(0, 112, 243, 0.12), transparent 38%),
    linear-gradient(290deg, rgba(0, 212, 255, 0.08), transparent 42%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: clamp(2.8rem, 7vw, 6.4rem);
  margin-bottom: 24px;
}

.hero-copy {
  max-width: 720px;
  color: rgba(240, 248, 255, 0.84);
  margin-bottom: 28px;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 720px;
}

.hero-meta-card {
  padding: 18px;
  background: rgba(9, 27, 45, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow);
}

.hero-meta-card strong {
  display: block;
  color: var(--white);
  margin-bottom: 8px;
  font-size: 0.96rem;
  font-weight: 500;
}

.hero-visual {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 16px;
  align-items: stretch;
  min-height: 560px;
}

.visual-stack {
  display: grid;
  gap: 16px;
}

.visual-card {
  position: relative;
  min-height: 220px;
  border: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.visual-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.86;
}

.visual-card::after {
  content: '';
  position: absolute;
  inset: auto 0 0;
  height: 55%;
  background: linear-gradient(180deg, transparent, rgba(3, 13, 26, 0.85));
}

.visual-label {
  position: absolute;
  left: 18px;
  bottom: 18px;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
}

.detail-grid,
.process-grid,
.proof-grid,
.resource-grid {
  display: grid;
  gap: 24px;
}

.detail-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 42px;
}

.detail-card,
.process-card,
.proof-card,
.resource-card {
  padding: 30px;
  background: linear-gradient(180deg, rgba(9, 27, 45, 0.88), rgba(5, 17, 31, 0.96));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
  min-height: 100%;
}

.detail-card.is-featured {
  grid-column: span 2;
}

.detail-kicker {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.detail-card h3,
.process-card h3,
.resource-card h3 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2vw, 2.1rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.detail-card p,
.process-card p,
.resource-card p,
.proof-copy p,
.cta-block p {
  color: rgba(240, 248, 255, 0.82);
}

.link-list,
.proof-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.link-list li,
.proof-list li {
  padding-left: 18px;
  position: relative;
  color: rgba(240, 248, 255, 0.78);
}

.link-list li::before {
  content: '';
  position: absolute;
  top: 0.8em;
  left: 0;
  width: 7px;
  height: 7px;
  background: var(--cyan);
}

.proof-list li::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-family: var(--font-mono);
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  margin-top: 22px;
}

.card-links a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gray);
}

.process-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 40px;
}

.process-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  border: 1px solid var(--border);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.proof-grid {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.95fr);
  align-items: start;
  margin-top: 38px;
}

.proof-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.metric-value {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin-bottom: 10px;
}

.metric-label {
  color: var(--gray);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.resource-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 36px;
}

.cta-block {
  padding: 42px;
  background: linear-gradient(135deg, rgba(0, 112, 243, 0.18), rgba(0, 212, 255, 0.08) 55%, rgba(3, 13, 26, 0.92) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.terminal-section {
  padding: 92px 0 32px;
}

.terminal-grid {
  width: min(1360px, calc(100% - 8vw));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 36px;
}

.terminal-grid h5 {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 18px;
}

.terminal-grid p,
.terminal-grid li {
  color: rgba(240, 248, 255, 0.72);
  line-height: 1.9;
}

.terminal-bottom {
  width: min(1360px, calc(100% - 8vw));
  margin: 28px auto 0;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: var(--gray);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@media (max-width: 1180px) {
  .nav-links,
  .nav-cta-desktop {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .hero-grid,
  .proof-grid,
  .detail-card.is-featured {
    grid-template-columns: 1fr;
  }

  .detail-card.is-featured {
    grid-column: auto;
  }

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

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

@media (max-width: 860px) {
  .section {
    padding: 96px 0;
  }

  .hero {
    padding-top: 136px;
  }

  .hero-meta,
  .detail-grid,
  .proof-metrics,
  .terminal-grid,
  .terminal-bottom,
  .process-grid,
  .resource-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: auto;
  }

  .cta-block {
    padding: 30px;
  }

  .terminal-bottom {
    display: grid;
  }
}

@media (max-width: 640px) {
  .container,
  .terminal-grid,
  .terminal-bottom {
    width: min(100%, calc(100% - 32px));
  }

  .hero-title {
    font-size: clamp(2.3rem, 13vw, 4rem);
  }

  .hero-actions,
  .cta-actions {
    display: grid;
  }

  .btn-sharp {
    width: 100%;
  }

  .visual-stack,
  .hero-visual {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .reveal.visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn-sharp::before {
    transition: none;
  }
}