.menu-toggle {
  display: none;
}

@media (max-width: 920px) {
  .hero-grid,
  .about-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .achievement-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3rem;
  }
}

@media (max-width: 760px) {
  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 1rem;
    right: 1rem;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    background: var(--card);
    border: 1px solid var(--border);
    padding: 1rem;
    border-radius: 18px;
    box-shadow: var(--shadow);
  }

  .site-nav.open {
    display: flex;
  }

  .header-actions {
    gap: 0.6rem;
  }

  .nav-container {
    gap: 0.75rem;
  }

  .section {
    padding: 4rem 0;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(var(--max-width), calc(100% - 1.2rem));
  }

  .hero-copy h1 {
    font-size: 2.5rem;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .info-list div {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}