.signature {
  background: var(--color-surface);
  padding-block: var(--space-lg);
  display: flex;
  justify-content: center;
}

.signature-mark {
  width: 100%;
  max-width: 420px;
  height: auto;
}

.site-footer {
  background: var(--color-text-primary);
  color: var(--color-surface);
  padding-top: var(--space-xl);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(255, 253, 252, 0.14);
}

.footer-brand-mark {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--space-sm);
}

.footer-logo {
  height: 64px;
}

.footer-wordmark {
  height: 26px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer-brand p {
  font-size: 0.9rem;
  color: rgba(255, 253, 252, 0.65);
  max-width: 30ch;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.92rem;
  color: rgba(255, 253, 252, 0.8);
}

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

.social-icons {
  display: flex;
  gap: 0.75rem;
}

.social-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 253, 252, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-surface);
  transition: background-color var(--dur-fast) var(--ease-soft),
    border-color var(--dur-fast) var(--ease-soft),
    color var(--dur-fast) var(--ease-soft);
}

.social-icon:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

.footer-bottom {
  padding-block: var(--space-md);
  font-size: 0.82rem;
  color: rgba(255, 253, 252, 0.55);
  text-align: center;
}