@media (max-width: 768px) {
  :root {
    --sp-xl: 48px;
  }

  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.98);
    border-bottom: 1px solid var(--green-dim);
    padding: var(--sp-md);
    transform: translateY(-120%);
    transition: transform var(--ease);
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .main-nav ul {
    flex-direction: column;
    gap: var(--sp-sm);
    align-items: center;
  }

  .hero-title {
    font-size: 24px;
    letter-spacing: 5px;
  }

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

  .crew-profile {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .crew-avatar {
    width: 180px;
    margin: 0 auto;
  }

  .diag-label {
    min-width: 120px;
    font-size: 10px;
  }

  .diag-bar {
    font-size: 10px;
    min-width: 100px;
  }

  .comm-terminal {
    padding: var(--sp-md);
  }

  .crew-photo img {
    width: 90px;
    height: 90px;
  }

  .channel-row {
    flex-direction: column;
    margin-bottom: var(--sp-xs);
  }

  #boot-terminal {
    font-size: 12px;
  }

  #boot-terminal .line.highlight {
    font-size: 14px;
    letter-spacing: 2px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 20px;
    letter-spacing: 4px;
  }

  .diag-row {
    flex-wrap: wrap;
  }

  .diag-status {
    margin-left: 0;
    width: 100%;
  }

  .file-grid {
    gap: var(--sp-sm);
  }
}