button { font: inherit; cursor: pointer; }
:where(a, button, input, select, textarea):focus-visible {
  outline: 3px solid #76e1c0;
  outline-offset: 4px;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 12px 18px;
  border-radius: 8px;
  background: #8ae5c8;
  color: #061421;
  font: 600 1rem/1.5 system-ui, sans-serif;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }
.task-details { background: none; border: 0; color: #73b9ff; text-decoration: underline; min-height: 44px; }
.container, .simulator-grid, .control-panel, .control-group, .visual-display, .step-content, .tier-content { min-width: 0; }
.select-input { min-width: 0; max-width: 100%; }
.demo-table-scroll { overflow-x: auto; }
@media (max-width: 760px) {
  .navbar { padding: 12px 16px; }
  .nav-container { flex-wrap: wrap; gap: 8px 16px; }
  .back-link { min-height: 44px; }
  .hero { padding: 40px 16px 32px; }
  .hero h1 { font-size: clamp(1.9rem, 8vw, 2.6rem); overflow-wrap: break-word; }
  .hero p { font-size: 1rem; }
  .meta-tags, .meta-specs { flex-wrap: wrap; gap: 12px 20px; }
  .container { padding-left: 16px; padding-right: 16px; }
  .grid-challenges { grid-template-columns: minmax(0, 1fr); }
  .simulator-grid { grid-template-columns: minmax(0, 1fr); }
  .display-tabs { flex-wrap: wrap; }
  .tab-btn { min-height: 44px; }
  .mockup-header, .window-header, .demo-toolbar { flex-wrap: wrap; gap: 12px; }
  .mockup-body { padding: 16px; }
  .arch-flow { padding: 16px; }
  .flow-tier { flex-direction: column; align-items: stretch; }
  .tier-label { width: auto; border-right: 0; }
  .toast-msg { left: 16px; right: 16px; bottom: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto !important; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}