.footer {
    background: var(--ink-900);
    color: var(--text-on-dark);
    border-top: 1px solid var(--ink-line);
    padding: 4.5rem 0 2.5rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 2.5rem;
    padding-bottom: 3rem;
}
.footer-brand .nav-brand { color: var(--text-on-dark); margin-bottom: 1rem; }
.footer-brand .nav-brand .glyph { color: var(--violet-400); }
.footer-brand p {
    font-size: 0.95rem;
    color: var(--text-on-dark-soft);
    max-width: 34ch;
}

.footer-col h4 {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--text-on-dark-faint);
    margin-bottom: 1rem;
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-col li { font-size: 0.95rem; color: var(--text-on-dark-soft); }
.footer-col a {
    position: relative;
    color: var(--text-on-dark-soft);
    transition: color 200ms var(--ease);
}
.footer-col a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 1px;
    background: currentColor;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 200ms var(--ease);
}
.footer-col a:hover { color: var(--text-on-dark); }
.footer-col a:hover::after { transform: scaleX(1); }

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    padding-top: 2rem;
    border-top: 1px solid var(--ink-line);
}
.footer-bottom p {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-on-dark-faint);
}
.footer-legal { display: flex; gap: 1.5rem; }
.footer-legal a {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-on-dark-faint);
    transition: color 200ms var(--ease);
}
.footer-legal a:hover { color: var(--text-on-dark-soft); }

@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
}