.site-header{position:sticky;top:0;z-index:1000;background:#fff;border-bottom:1px solid var(--brand-border)}.chem-navbar{min-height:72px}.brand-logo{width:180px;height:40px;-o-object-fit:contain;object-fit:contain;background:linear-gradient(90deg,rgba(22,163,88,.12),rgba(14,165,233,.12));border-radius:4px}.navbar-nav .nav-link{color:var(--brand-text);font-weight:700;padding:24px 12px}.nav-search{margin-left:18px;padding:10px 16px;border:1px solid var(--brand-border);border-radius:999px;font-weight:700}.newsroom-panel{width:min(1080px,92vw);padding:28px;border:1px solid var(--brand-border);border-radius:var(--radius);box-shadow:var(--shadow-soft)}.mega-label{display:block;color:var(--brand-primary-dark);font-weight:800;margin-bottom:10px}.mega-link{display:block;color:var(--brand-text-muted);margin:8px 0}.footer-bottom,.footer-main,.region-switch{background:#0b1f35;color:var(--text-on-dark)}.region-switch{padding:26px 0;border-bottom:1px solid rgba(255,255,255,.16)}.footer-bottom span,.footer-main h5,.region-switch .footer-kicker,.region-switch h4{color:var(--text-on-dark)}.footer-kicker{display:block;font-size:12px;font-weight:700;text-transform:uppercase}.region-actions{display:flex;gap:12px;min-width:min(420px,100%)}.footer-main{padding:56px 0}.footer-main a,.footer-main p{color:rgba(255,255,255,.78)}.footer-main a{display:block;margin:9px 0}.footer-bottom{padding:18px 0;border-top:1px solid rgba(255,255,255,.16)}.language-chips{display:flex;flex-wrap:wrap;gap:8px}.language-chips span{border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:4px 10px}@media (max-width:991px){.navbar-nav .nav-link{padding:10px 0}.nav-search{display:inline-flex;margin:12px 0}.region-actions{flex-direction:column}}