.site-shell {
  width: min(calc(100% - 40px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 18px 0;
  backdrop-filter: blur(22px);
  background: rgba(5, 8, 22, 0.7);
  border-bottom: 1px solid rgba(137, 159, 216, 0.08);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(89, 208, 255, 0.9), rgba(255, 198, 93, 0.84));
  color: #07111f;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  box-shadow: 0 18px 40px rgba(89, 208, 255, 0.22);
}

.brand-copy strong {
  display: block;
  color: var(--text);
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.brand-copy span {
  color: var(--text-soft);
  font-size: 0.82rem;
}

.nav-toggle {
  display: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.nav-links a {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
  background: rgba(89, 208, 255, 0.1);
  transform: translateY(-1px);
}

.page-section {
  padding: 88px 0;
}

.hero-section {
  padding: 72px 0 48px;
}

.grid-two {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 24px;
}

.grid-three {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.grid-four {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.stack-24 {
  display: grid;
  gap: 24px;
}

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

.site-footer {
  padding: 32px 0 42px;
  border-top: 1px solid rgba(137, 159, 216, 0.12);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 20px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links a {
  color: var(--text-muted);
}

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

@media (max-width: 1080px) {
  .grid-four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 16px);
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    border: 1px solid rgba(137, 159, 216, 0.12);
    border-radius: var(--radius-md);
    background: rgba(7, 11, 29, 0.96);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: flex;
  }

  .grid-two,
  .grid-three,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .page-section {
    padding: 72px 0;
  }

  .hero-section {
    padding: 54px 0 32px;
  }
}

@media (max-width: 640px) {
  .site-shell {
    width: min(calc(100% - 28px), var(--container));
  }

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

  .site-header {
    padding: 14px 0;
  }
}