:root {
  --bg: #07111f;
  --bg-soft: #0d1728;
  --panel: rgba(11, 21, 38, 0.78);
  --panel-strong: rgba(15, 28, 49, 0.96);
  --line: rgba(113, 167, 255, 0.18);
  --text: #ecf4ff;
  --muted: #aab7cf;
  --accent: #6ca8ff;
  --accent-2: #81ffd9;
  --accent-3: #9f89ff;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius: 24px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(108, 168, 255, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(129, 255, 217, 0.12), transparent 22%),
    linear-gradient(180deg, #06101c 0%, #08101a 45%, #050a12 100%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.page-shell {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
  padding-bottom: 48px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 20px;
  padding: 18px 22px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  background: rgba(5, 11, 20, 0.74);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  color: var(--accent-2);
  font-size: 1.1rem;
}

nav {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 0.96rem;
}

nav a:hover { color: var(--text); }

.hero,
.content-section,
.feature-band,
.timeline-panel,
.faq-section {
  margin-top: 28px;
}

.grid-panel,
.feature-band,
.timeline-panel,
.faq-section,
.info-card,
.app-card,
.details-grid article,
.content-section {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  padding: 34px;
  border-radius: calc(var(--radius) + 8px);
}

.hero-copy h1,
.content-section h2,
.feature-band h2,
.timeline-panel h2,
.faq-section h2 {
  font-family: "Space Grotesk", Inter, sans-serif;
  line-height: 1.04;
  margin: 0;
}

.hero-copy h1 {
  font-size: clamp(2.6rem, 6vw, 5.3rem);
  max-width: 11ch;
}

.eyebrow,
.section-tag {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 8px 12px;
  border: 1px solid rgba(129,255,217,0.18);
  border-radius: 999px;
  background: rgba(129,255,217,0.08);
  color: var(--accent-2);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.lede,
.section-copy p,
.info-card p,
.band-copy p,
.details-grid p,
.app-card p,
.faq-list p,
.timeline-panel li span,
.site-footer p {
  color: var(--muted);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin: 28px 0;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 700;
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), #7ac4ff);
  color: #03111d;
}

.button.ghost {
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.03);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero-metrics li {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
}

.hero-metrics strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.95rem;
}

.hero-metrics span {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
  padding: 22px;
  border-radius: var(--radius);
  background:
    radial-gradient(circle at center, rgba(108,168,255,0.2), transparent 36%),
    linear-gradient(180deg, rgba(129,255,217,0.05), rgba(159,137,255,0.06));
}

.card-glow img,
.band-visual img {
  filter: drop-shadow(0 0 30px rgba(108,168,255,0.22));
}

.three-up,
.details-grid,
.application-grid,
.faq-list {
  display: grid;
  gap: 18px;
}

.three-up {
  grid-template-columns: repeat(3, 1fr);
  margin-top: 18px;
}

.info-card,
.app-card,
.details-grid article {
  padding: 24px;
  border-radius: 22px;
}

.info-card h2,
.details-grid h3,
.app-card h3,
.faq-list h3 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 1.15rem;
}

.split-section,
.feature-band {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 24px;
  padding: 30px;
  border-radius: 28px;
}

.band-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  padding: 10px;
  border-radius: 24px;
  background: rgba(255,255,255,0.02);
}

.details-grid {
  grid-template-columns: repeat(2, 1fr);
  margin-top: 18px;
}

.applications {
  padding: 28px;
  border-radius: 28px;
}

.application-grid {
  grid-template-columns: repeat(2, 1fr);
  margin-top: 24px;
}

.timeline-panel {
  padding: 28px;
  border-radius: 28px;
}

.timeline-panel ol {
  display: grid;
  gap: 16px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: item;
}

.timeline-panel li {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 18px;
  align-items: start;
  padding: 18px 20px;
  border-radius: 20px;
  background: rgba(255,255,255,0.03);
}

.timeline-panel li strong::before {
  counter-increment: item;
  content: "0" counter(item) "";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-right: 10px;
  border-radius: 999px;
  background: rgba(108,168,255,0.12);
  color: var(--accent);
}

.faq-section {
  padding: 28px;
  border-radius: 28px;
}

.faq-list {
  grid-template-columns: repeat(2, 1fr);
  margin-top: 22px;
}

.faq-list article {
  padding: 22px;
  border-radius: 22px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.05);
}

.site-footer {
  padding: 26px 0 8px;
  text-align: center;
}

@media (max-width: 980px) {
  .hero,
  .split-section,
  .feature-band,
  .three-up,
  .details-grid,
  .application-grid,
  .faq-list {
    grid-template-columns: 1fr;
  }

  .hero-metrics,
  .timeline-panel li {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .page-shell { width: min(calc(100% - 18px), var(--max)); }
  .hero,
  .applications,
  .feature-band,
  .timeline-panel,
  .faq-section,
  .content-section,
  .info-card,
  .details-grid article,
  .app-card {
    padding: 20px;
  }

  .hero-copy h1 { font-size: 2.4rem; }
  nav { flex-wrap: wrap; gap: 12px; }
}