background: var(--accent-grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: 16px;
}
.error-404 h2 { font-size: 32px; margin-bottom: 8px; }
.error-404 p { color: var(--text-muted); margin-bottom: 32px; }

.no-results {
    text-align: center;
    padding: 60px 0;
    color: var(--text-muted);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .main-nav {
        position: fixed;
        top: 72px;
        left: 0; right: 0;
        background: var(--bg-elev);
        border-bottom: 1px solid var(--border);
        padding: 20px 24px;
        transform: translateY(-120%);
        transition: transform .3s;
    }
    .main-nav.is-open { transform: translateY(0); }
    .main-nav .menu { flex-direction: column; gap: 4px; }
    .main-nav .menu a { padding: 12px 16px; }
    .mobile-toggle { display: flex; }
    .footer-inner { grid-template-columns: 1fr; gap: 40px; }
    .pros-cons { grid-template-columns: 1fr; }
    .single-container { padding-top: 40px; }
    .hero { padding: 80px 0 60px; }
    .section { padding: 60px 0; }
    .newsletter-card { padding: 32px; }
    .newsletter-form { max-width: 100%; }
}

@media (max-width: 600px) {
    .container { padding: 0 20px; }
    .hero-stats { gap: 24px; }
    .hero-ctas .btn { width: 100%; justify-content: center; }
    .card-body { padding: 20px; }
}