/* ── Mobile-First Responsive ── */

/* Large screens */
@media (max-width: 1200px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-brand { grid-column: 1 / -1; }
  .hero-grid { gap: 40px; }
}

/* Tablet */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-img { max-width: 500px; margin: 0 auto; }
  .hero-stats { gap: 24px; }
}

/* Phablet */
@media (max-width: 768px) {
  .nav-menu { display: none; flex-direction: column; gap: 4px; }
  .nav-menu.open {
    display: flex; position: absolute; top: 70px; left: 0; right: 0;
    background: rgba(10,10,15,0.97); backdrop-filter: blur(20px);
    padding: 20px; border-bottom: 1px solid var(--border);
  }
  .nav-toggle { display: flex; }
  .navbar { position: relative; }
  .hero { padding: 100px 0 60px; min-height: auto; }
  .hero h1 { font-size: 32px; }
  .hero-desc { font-size: 16px; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .section { padding: 70px 0; }
  .card { padding: 24px; }
  .download-box { padding: 32px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .author-box { flex-direction: column; }
  .comparison-table { font-size: 13px; }
  th, td { padding: 10px 12px; }
  .back-top { bottom: 20px; right: 20px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .btn-primary { width: 100%; justify-content: center; font-size: 16px; padding: 16px 32px; }
  .btn-secondary { width: 100%; justify-content: center; }
  .blog-grid { grid-template-columns: 1fr; }
  .page-header { padding: 100px 0 40px; }
  .page-header h1 { font-size: 28px; }
  .content-section h2 { font-size: 24px; }
}

/* Mobile */
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 28px; }
  .section-title { font-size: 24px; }
  .features-grid { grid-template-columns: 1fr; }
  .download-meta { flex-direction: column; gap: 10px; text-align: center; align-items: center; }
  .hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-num { font-size: 22px; }
  table { font-size: 12px; }
  th, td { padding: 8px 10px; }
  .quick-answer { padding: 18px 20px; }
  .key-takeaways { padding: 24px; }
  .toc { padding: 20px; }
  .step { flex-direction: column; gap: 12px; }
  .version-box { flex-direction: column; gap: 10px; text-align: center; }
}