.footer {
  padding: var(--space-section-md) 0 56px;
  border-top: 1px solid var(--border-hairline);
  background: var(--bg-base);
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 2.4fr;
  gap: 48px;
  margin-bottom: 56px;
}
@media (max-width: 900px) {
  .footer-top { grid-template-columns: 1fr; }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 280px;
}
.footer-logo {
  display: inline-flex;
  align-items: center;
  height: 28px;
}
.footer-logo-img {
  display: block;
  height: 28px;
  width: auto;
}
.footer-tag {
  font-size: var(--fs-base-sm);
  color: var(--text-muted);
  line-height: var(--lh-base);
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
@media (max-width: 760px) {
  .footer-columns { grid-template-columns: repeat(2, 1fr); }
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 14px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 4px; }
.footer-col a {
  display: inline-block;
  padding: 6px 0;
  font-size: var(--fs-sm);
  color: var(--text-muted);
}
.footer-col a:hover { color: var(--text-base); }

.footer-bottom {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-sm);
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  padding-top: 24px;
  border-top: 1px solid var(--border-hairline);
}
.footer-sep { opacity: 0.6; }

.footer-bottom-link {
  color: var(--text-tertiary);
  transition: color var(--t-base);
}
.footer-bottom-link:hover { color: var(--text-base); }

.footer-built { color: var(--text-tertiary); margin-left: auto; }
@media (max-width: 560px) {
  .footer-bottom { flex-wrap: wrap; }
  .footer-built { margin-left: 0; }
}
.footer-built-link {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
  transition: opacity var(--t-base);
}
.footer-built-link:hover { opacity: 0.85; color: transparent; }