footer {
  background: var(--text);
  color: var(--bg);
  padding: 96px 0 32px;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1.3fr;
  gap: 48px;
  padding-bottom: 64px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 22px;
  max-width: 320px;
}

.footer-brand-lockup {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-brand-mark {
  width: 42px;
  height: auto;
}

.footer-brand-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.footer-brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--bg);
  line-height: 1;
}

.footer-brand-cn {
  font-size: 10px;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.55);
}

.footer-brand-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin: 0;
}

.footer-certs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-cert {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 5px 11px;
  border-radius: 9999px;
  color: var(--silver);
  background: rgba(197, 205, 216, 0.14);
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col-title {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  font-weight: 500;
  transition: color .2s;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

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

.footer-col a .sub {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-col a .ext {
  font-size: 11px;
  opacity: 0.5;
}

/* Contact column */
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-contact-row {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  align-items: baseline;
}

.footer-contact-row .k {
  color: rgba(255, 255, 255, 0.45);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.footer-contact-row .v {
  color: rgba(255, 255, 255, 0.85);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.55;
  word-break: break-all;
}

.footer-contact-row .v a {
  color: inherit;
  transition: color .2s;
}
.footer-contact-row .v a:hover { color: var(--silver); }

/* Bottom bar */
.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-copyright {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-meta {
  display: flex;
  gap: 28px;
  align-items: center;
  flex-wrap: wrap;
}

.footer-legal {
  display: flex;
  gap: 18px;
}

.footer-legal a {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
  transition: color .2s;
}
.footer-legal a:hover { color: var(--silver); }

.footer-locale {
  display: flex;
  gap: 2px;
  align-items: center;
  padding: 2px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 9999px;
}

.footer-locale button {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.55);
  cursor: pointer;
  padding: 5px 12px;
  font-size: 11px;
  letter-spacing: 0.06em;
  font-family: inherit;
  border-radius: 9999px;
  transition: all .2s;
}

.footer-locale button.active,
.footer-locale button:hover {
  color: var(--accent-on);
  background: var(--accent);
}

@media (max-width: 1100px) {
  .footer-main { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; flex-direction: row; max-width: none; flex-wrap: wrap; align-items: flex-start; }
}

@media (max-width: 720px) {
  footer { padding: 64px 0 24px; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 36px 24px; padding-bottom: 40px; }
  .footer-brand { grid-column: 1 / -1; flex-direction: column; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 12px; }
  .footer-meta { gap: 18px; }
}

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