.site-footer {
  background-color: var(--color-paper);
  color: var(--color-ink);
  padding: 48px 0 0;
  border-top: 1px solid var(--color-rule);
}

.site-footer__inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.site-footer__logo-link {
  display: inline-flex;
  align-items: center;
}

.site-footer__logo {
  height: 22px;
  width: auto;
  max-width: none;
  flex-shrink: 0;
  object-fit: contain;
  display: block;
  font-family: var(--font-display);
  font-size: 20px;
}

.site-footer a:hover {
  text-decoration: none;
  color: var(--color-quiet);
}

.site-footer__tagline {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-quiet);
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  justify-content: flex-end;
}

.site-footer__links a {
  font-size: 13px;
}

.site-footer__bottom {
  max-width: var(--container-width);
  margin: 36px auto 0;
  padding: 16px var(--gutter) 24px;
  border-top: 1px solid var(--color-rule);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-quiet);
}

.back-to-top {
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-rule);
  color: var(--color-ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

.back-to-top:hover {
  border-color: var(--color-ink);
  color: var(--color-ink);
}

@media (max-width: 768px) {
  .site-footer {
    padding: 36px 0 0;
  }

  .site-footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .site-footer__links {
    justify-content: flex-start;
  }
}