footer {
  background: var(--paper);
  color: var(--ink);
  padding: 48px 28px 28px;
  border-top: 1px solid var(--rule);
}

.footer-top {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-logo {
  font-family: "Archivo Black", sans-serif;
  font-size: 52px;
  letter-spacing: -0.03em;
  line-height: 0.9;
}

.footer-logo em {
  color: var(--hot);
  font-style: normal;
}

.footer-sub {
  font-family: "M PLUS 1p", "Noto Sans JP", sans-serif;
  font-size: 13px;
  margin-top: 14px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.7);
}

.footer-col h4 {
  font-family: "Oswald", sans-serif;
  font-size: 10px;
  letter-spacing: 0.25em;
  color: #ffffff;
  margin-bottom: 16px;
  font-weight: 500;
  text-transform: uppercase;
}

.footer-col ul {
  list-style: none;
  font-size: 13px;
  line-height: 2;
}

.footer-col ul a {
  opacity: 0.8;
  transition: opacity 0.2s, color 0.2s;
}

.footer-col ul a:hover {
  opacity: 1;
  color: var(--hot);
}

.footer-bottom {
  max-width: 1120px;
  margin: 0 auto;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
}

@media (max-width: 1000px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

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

  .footer-logo {
    font-size: 42px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}