html { scroll-behavior: smooth; overflow-x: hidden; }
  body { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: hidden; }
  ::selection { background: #F97316; color: #fff; }
  .no-scroll { overflow: hidden; }
  .glass-nav { background: rgba(255,255,255,0.72); -webkit-backdrop-filter: blur(14px) saturate(1.6); backdrop-filter: blur(14px) saturate(1.6); }
  .btn-press { transition: transform .12s ease, box-shadow .12s ease, background-color .15s ease; }
  .btn-press:active { transform: translateY(2px); box-shadow: 0 1px 0 0 rgba(0,0,0,.15) inset !important; }
  #mobileMenu { transition: opacity .28s ease, visibility .28s ease; }
  #mobilePanel { transition: transform .34s cubic-bezier(.22,.61,.36,1); }
  #mobileMenu.is-open { opacity: 1; visibility: visible; }
  #mobileMenu.is-open #mobilePanel { transform: translateX(0); }
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    #mobileMenu, #mobilePanel, .btn-press { transition: none; }
    .btn-press:active { transform: none; }
  }
  @keyframes wa-pulse {
    0%   { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.55), 0 12px 32px -10px rgba(37, 211, 102, 0.6); }
    70%  { box-shadow: 0 0 0 16px rgba(37, 211, 102, 0), 0 12px 32px -10px rgba(37, 211, 102, 0.6); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0), 0 12px 32px -10px rgba(37, 211, 102, 0.6); }
  }
  .wa-fab { bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px)); right: 1rem; background: linear-gradient(145deg, #2BE07A 0%, #25D366 45%, #1EBE5D 100%); box-shadow: 0 12px 32px -10px rgba(37, 211, 102, 0.6), 0 4px 10px -4px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.35); animation: wa-pulse 2.8s cubic-bezier(0.4, 0, 0.6, 1) infinite; transition: transform .22s cubic-bezier(.22,.61,.36,1), box-shadow .22s ease; }
  .wa-fab:hover, .wa-fab:focus-visible { animation-play-state: paused; transform: translateY(-3px) scale(1.04); box-shadow: 0 20px 40px -12px rgba(37, 211, 102, 0.7), 0 8px 16px -6px rgba(0, 0, 0, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.45); }
  .wa-fab:active { transform: translateY(0) scale(0.96); box-shadow: 0 6px 16px -6px rgba(37, 211, 102, 0.5), inset 0 2px 4px rgba(0, 0, 0, 0.12); }
  .wa-fab svg { transition: transform .3s cubic-bezier(.34,1.56,.64,1); }
  .wa-fab:hover svg { transform: rotate(-8deg) scale(1.08); }
  @media (min-width: 640px) { .wa-fab { right: 1.5rem; bottom: 1.5rem; } }
  @media (prefers-reduced-motion: reduce) { .wa-fab { animation: none; } .wa-fab:hover svg { transform: none; } }
  :where(a, button, input, select, textarea, summary, [tabindex]):focus-visible { outline: 2px solid #F97316; outline-offset: 2px; border-radius: 8px; }
  h1, h2, h3 { text-wrap: balance; }
  p, li { text-wrap: pretty; }
  .break-safe { overflow-wrap: anywhere; word-break: break-word; }
  .chip-row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; min-width: 0; }
  .nowrap-safe { white-space: nowrap; }
  @media (max-width: 374px) { img, video, svg { max-width: 100%; height: auto; } }
  .card-lift { transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease; }
  .card-lift:hover { border-color: #CBD5E1; box-shadow: 0 4px 12px -2px rgba(15,23,42,.08), 0 8px 24px -8px rgba(15,23,42,.06); }
  @media (min-width: 1024px) { .sidebar-sticky { position: sticky; top: 96px; } }
  .check-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid #F1F5F9; }
  .check-row:last-child { border-bottom: 0; }
  .check-pass { color: #047857; }
  .check-miss { color: #94A3B8; }
  @media (min-width: 1024px) {
    .hero-sticky { position: sticky; top: 96px; }
  }