@media (max-width: 800px) {
  body.android-app { padding-bottom: max(92px, env(safe-area-inset-bottom) + 78px); }
  body.android-app .site-header { padding-top: env(safe-area-inset-top); }
  body.android-app .android-app-nav {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    position: fixed;
    z-index: 1050;
    left: 12px;
    right: 12px;
    bottom: max(10px, env(safe-area-inset-bottom));
    min-height: 68px;
    padding: 7px;
    border: 1px solid rgba(255,255,255,.22);
    border-radius: 24px;
    background: rgba(7, 29, 49, .96);
    box-shadow: 0 14px 38px rgba(4, 18, 31, .3), inset 0 1px rgba(255,255,255,.12);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
  }
  .android-app-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1px;
    min-width: 0;
    border-radius: 17px;
    color: #d2e2ef;
    font: 600 10px/1.2 system-ui, sans-serif;
    letter-spacing: .01em;
    text-decoration: none;
    transition: background .25s ease, color .25s ease, transform .25s ease;
  }
  .android-app-nav a i { font-size: 21px; line-height: 1.2; }
  .android-app-nav a[aria-current="page"] { background: linear-gradient(145deg,#faad58,#df8039); color: #112b3f; box-shadow: 0 4px 16px #f3904250; }
  .android-app-nav a:active { transform: scale(.94); }
  .android-app-nav a:focus-visible { outline: 2px solid #fff; outline-offset: -3px; }
}
.android-app-nav { display: none; }
@media (prefers-reduced-motion: reduce) { .android-app-nav a { transition: none; } }