@media (max-width: 247.98px) {
    .container { padding: 0 8px; }
    .hero h1 { font-size: 1.3rem; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stat-value { font-size: 1.2rem; }
    nav { display: none; }
}

@media (min-width: 248px) and (max-width: 383.98px) {
    .container { padding: 0 12px; }
    .hero h1 { font-size: 1.5rem; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stat-value { font-size: 1.4rem; }
    nav { gap: 4px; }
    nav a { padding: 6px 10px; font-size: 0.8rem; }
}

@media (min-width: 384px) and (max-width: 575.98px) {
    .hero h1 { font-size: 1.8rem; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 576px) and (max-width: 767.98px) {
    .hero h1 { font-size: 2.2rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) and (max-width: 991.98px) {
    .hero h1 { font-size: 2.5rem; }
    .stats-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 992px) and (max-width: 1199.98px) {
    .stats-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1200px) and (max-width: 1535.98px) {
    .stats-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 2560px) {
    .container { max-width: 1800px; }
    h1 { font-size: 3rem; }
    .hero h1 { font-size: 4rem; }
}