.footer {
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 260px 1fr 1fr 1fr;
}

.footer-col {
  padding: 48px 40px;
  border-right: 1px solid var(--border);
}

.footer-col:last-child {
  border-right: none;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.footer-brand .brand-lockup {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand svg {
  width: 28px;
  height: 28px;
}

.footer-brand .wordmark {
  font-family: var(--display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0;
  color: var(--text);
}

.footer-brand .wordmark em {
  font-style: normal;
  color: var(--accent);
}

.footer-brand p {
  font-size: 16px;
  line-height: 1.72;
  color: var(--subtle);
  max-width: 38ch;
}

.footer-col h4 {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--text);
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul a {
  font-size: 16px;
  color: var(--subtle);
  transition: color 180ms ease;
}

.footer-col ul a:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  border-top: 1px solid var(--border);
}

.footer-bottom span {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--subtle);
}

@media (max-width: 960px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-col {
    padding: 32px 24px;
  }
  .footer-col:nth-child(2) { border-right: 1px solid var(--border); }
  .footer-col:nth-child(1),
  .footer-col:nth-child(2) {
    border-bottom: 1px solid var(--border);
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    padding: 18px 24px;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-col,
  .footer-col:nth-child(2) {
    padding: 28px 20px;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .footer-col:last-child {
    border-bottom: none;
  }

  .footer-bottom {
    align-items: flex-start;
    padding: 18px 20px;
  }
}