/* Header, footer, page shell */
.page-wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.logo__mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--accent-cyan) 38%, transparent),
    color-mix(in srgb, var(--accent-violet) 42%, transparent)
  );
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.logo__mark svg {
  width: 22px;
  height: 22px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, white 22%, transparent);
  background: color-mix(in srgb, rgba(255, 255, 255, 0.14) 55%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: var(--text);
  align-items: center;
  justify-content: center;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    inset 0 -1px 0 rgba(0, 0, 255, 0.12),
    0 6px 22px rgba(0, 0, 255, 0.28);
  transition:
    border-color 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

.nav-toggle:hover {
  border-color: color-mix(in srgb, var(--accent-cyan) 38%, rgba(255, 255, 255, 0.35));
  background: color-mix(in srgb, rgba(255, 255, 255, 0.2) 60%, transparent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.3),
    inset 0 -1px 0 rgba(0, 0, 255, 0.1),
    0 8px 28px rgba(0, 0, 255, 0.32),
    0 0 24px color-mix(in srgb, var(--accent-cyan) 18%, transparent);
}

.nav-toggle svg {
  width: 22px;
  height: 22px;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.site-nav a {
  display: block;
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-muted);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition:
    color 0.2s,
    background 0.2s,
    border-color 0.2s,
    box-shadow 0.2s;
}

.site-nav a:hover {
  color: var(--text);
  background: color-mix(in srgb, rgba(255, 255, 255, 0.12) 55%, transparent);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.14),
    0 4px 18px rgba(0, 0, 255, 0.18);
}

.site-nav a.is-active {
  color: rgba(248, 252, 255, 0.98);
  text-shadow: 0 1px 3px rgba(5, 6, 22, 0.42);
  background: linear-gradient(
    120deg,
    color-mix(in srgb, var(--accent-cyan) 54%, transparent),
    color-mix(in srgb, var(--accent-violet) 48%, transparent)
  );
  border-color: color-mix(in srgb, var(--accent-cyan) 50%, rgba(255, 255, 255, 0.38));
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.36),
    inset 0 -1px 0 rgba(0, 0, 255, 0.16),
    0 6px 22px rgba(0, 0, 255, 0.28),
    0 0 28px color-mix(in srgb, var(--accent-cyan) 26%, transparent);
}

.site-main {
  flex: 1;
}

.container {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-2xl) 0;
}

.section--tight {
  padding: var(--space-xl) 0;
}

.section__head {
  max-width: 640px;
  margin-bottom: var(--space-lg);
}

.section__eyebrow {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: var(--space-sm);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-sm);
}

.section__lead {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.site-footer {
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--space-xl) 0 var(--space-lg);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 1fr);
  gap: var(--space-lg);
}

.site-footer h3 {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-soft);
  margin-bottom: var(--space-md);
}

.site-footer ul {
  list-style: none;
}

.site-footer a {
  color: var(--text-muted);
  font-size: 0.95rem;
  display: inline-block;
  padding: 0.25rem 0;
  transition: color 0.2s;
}

.site-footer a:hover {
  color: var(--accent-cyan);
}

.site-footer__brand p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: var(--space-sm);
  max-width: 280px;
}

.footer-bottom {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-soft);
}

@media (max-width: 900px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: rgba(5, 6, 15, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: var(--space-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition:
      transform 0.25s ease,
      opacity 0.25s ease,
      visibility 0.25s;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
  }

  .site-nav a {
    border-radius: var(--radius-sm);
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
  }
}