/* ========================================
   Footer
   ======================================== */
.site-footer {
    padding: 72px 0 40px;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr 1.4fr;
    gap: 40px;
    margin-bottom: 56px;
}

.footer-brand-col .footer-brand {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.0625rem;
    color: var(--ink);
    display: flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    margin-bottom: 16px;
}

.footer-brand-col .footer-tagline {
    font-size: 0.875rem;
    color: var(--muted);
    line-height: 1.7;
    max-width: 260px;
}

.footer-col h5 {
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--ink);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 20px;
}

.footer-col ul { list-style: none; padding: 0; }
.footer-col ul li { margin-bottom: 10px; }

.footer-col ul li a {
    font-size: 0.8125rem;
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s, padding-left 0.2s;
    display: inline-block;
}

.footer-col ul li a:hover {
    color: var(--accent);
    padding-left: 4px;
}

/* Contact List */
.footer-contact-list { list-style: none; padding: 0; }

.footer-contact-list li {
    margin-bottom: 14px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.footer-contact-icon {
    width: 16px;
    flex-shrink: 0;
    margin-top: 3px;
    color: var(--accent);
}

.footer-contact-text {
    font-size: 0.8125rem;
    color: var(--muted);
    line-height: 1.6;
}

.footer-contact-text a {
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-contact-text a:hover { color: var(--accent); }

.footer-contact-label {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    font-weight: 500;
    color: var(--ink-light);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    display: block;
    margin-bottom: 2px;
}

/* Footer Bottom */
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 28px;
    border-top: 1px solid var(--border-light);
}

.footer-terms {
    display: flex;
    gap: 24px;
}

.footer-terms a {
    font-size: 0.75rem;
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-terms a:hover { color: var(--accent); }

.footer-copy {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--muted);
    letter-spacing: 0.5px;
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }
    .footer-brand-col {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .site-footer { padding: 48px 0 32px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    .footer-terms {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
}

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