.footer {
  background: var(--void);
  border-top: 1px solid var(--hairline);
  padding: var(--sp-12) 0 var(--sp-4);
}

.footer__top {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1.2fr;
  gap: var(--sp-6);
  margin-bottom: var(--sp-8);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  align-items: flex-start;
}
.footer__brand-logo {
  display: block;
  height: 48px;
  width: auto;
  object-fit: contain;
}
.footer__brand-tag {
  font-family: var(--ff-mono);
  font-size: var(--fs-mono-xs);
  color: var(--graphite);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  max-width: 22ch;
  line-height: 1.5;
}

.footer__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--ff-mono);
  font-size: var(--fs-mono);
  color: var(--param-cyan);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border-bottom: 1px solid var(--param-cyan);
  padding-bottom: 0.4rem;
  width: fit-content;
  transition: color 200ms ease, border-color 200ms ease;
}
.footer__cta span { transition: transform 200ms ease; display: inline-block; }
.footer__cta:hover span { transform: translateX(4px); }

.footer__col-title {
  font-family: var(--ff-mono);
  font-size: var(--fs-mono-xs);
  color: var(--param-cyan);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: var(--sp-3);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.footer__list a {
  font-family: var(--ff-ui);
  font-size: var(--fs-sm);
  color: var(--ash);
  transition: color 200ms ease;
}
.footer__list a:hover { color: var(--param-cyan); }

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-family: var(--ff-ui);
  font-size: var(--fs-sm);
  color: var(--ash);
}
.footer__contact span { color: var(--param-cyan); }

.footer__bottom {
  border-top: 1px solid var(--hairline);
  padding-top: var(--sp-3);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  font-family: var(--ff-mono);
  font-size: var(--fs-mono-xs);
  color: var(--graphite);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* CAD scale */
.footer__scale {
  margin-top: var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.footer__scale-letters {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 0;
  font-family: var(--ff-mono);
  font-size: var(--fs-mono-xs);
  color: var(--graphite);
  text-align: center;
}
.footer__scale-letters span {
  border-left: 1px solid var(--hairline);
  padding: 0.4rem 0;
}
.footer__scale-letters span:last-child { border-right: 1px solid var(--hairline); }

.footer__scale-line {
  position: relative;
  height: 1px;
  background: var(--hairline);
}

.footer__scale-numbers {
  display: flex;
  justify-content: space-between;
  font-family: var(--ff-mono);
  font-size: var(--fs-mono-xs);
  color: var(--graphite);
}

@media (max-width: 900px) {
  .footer__top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer__top { grid-template-columns: 1fr; }
  .footer__scale-letters { grid-template-columns: repeat(5, 1fr); }
}