/* ── Responsive Design ───────────────────────────────────── */
@media (max-width: 640px) {
  .hero {
    padding: 3rem 1.2rem 2.5rem;
    text-align: center;
  }

  .hero-main {
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
  }

  .hero-content {
    text-align: center;
    max-width: 100%;
  }

  .hero-bio {
    max-width: 100%;
    text-align: center;
  }

  .hero-title {
    text-align: center;
  }

  .hero-role-block {
    border-left: none;
    padding-left: 0;
  }

  .hero-links {
    justify-content: center;
  }

  .repo-right {
    display: none;
  }

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

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

  nav {
    padding: 0 1rem;
  }

  .nav-url, .nav-sep {
    display: none;
  }

  .nav-links {
    gap: 1rem;
  }
}