.site-footer {
  position: relative;
  z-index: var(--z-content);
  border-top: 1px solid var(--line);
  background: linear-gradient(to bottom, transparent, rgba(5, 6, 10, 0.55) 40%, var(--bg) 100%);
  padding: clamp(3rem, 6vw, 4.5rem) 0 2rem;
}

.footer-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
}

.footer-brand .brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
}

.footer-brand p {
  margin-top: 1rem;
  color: var(--ink-faint);
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: 34ch;
}

.footer-col h4 {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 1rem;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-col a {
  text-decoration: none;
  color: var(--ink-faint);
  font-size: 0.9rem;
  transition: color var(--dur-fast) var(--ease-out);
}

.footer-col a:hover,
.footer-col a:focus-visible {
  color: var(--accent-2);
}

.footer-col .muted {
  color: var(--ink-faint);
  font-size: 0.85rem;
  opacity: 0.75;
}

.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

@media (max-width: 820px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}