@media (max-width: 1024px) {
    .expertise-grid { grid-template-columns: repeat(2, 1fr); }
    .pub-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .about-layout { grid-template-columns: 1fr; }
    .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .main-nav { display: none; }
    .nav-toggle { display: flex; }
    .main-nav.open {
        display: flex;
        flex-direction: column;
        position: fixed;
        inset: 72px 0 0 0;
        background: var(--ivory);
        z-index: 200;
        padding: 32px;
        gap: 20px;
        border-top: 1px solid var(--border);
    }
    .main-nav.open a { font-size: 1rem; color: var(--bordeaux); text-transform: none; }
    .nav-contact-btn { text-align: center; }
    .expertise-grid { grid-template-columns: 1fr; }
    .pub-grid { grid-template-columns: 1fr; }
}