.game-back {
  position: fixed;
  z-index: 1000;
  left: 16px;
  bottom: 16px;
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 10px 18px;
  border: 4px solid #fff;
  border-radius: 999px;
  background: linear-gradient(#65d9ff, #18a9df 64%, #0876b2);
  box-shadow: 0 6px 0 #075b8d, 0 10px 22px rgba(5, 37, 73, .32);
  color: #fff;
  font: 900 16px/1 "Trebuchet MS", Arial, sans-serif;
  text-decoration: none;
  text-shadow: 0 2px 1px rgba(6, 67, 111, .6);
  transition: transform .18s ease, filter .18s ease;
}
.game-back:hover { transform: translateY(-5px); filter: brightness(1.08); }
.game-back:active { transform: translateY(2px); box-shadow: 0 3px 0 #075b8d; }
.game-back:focus-visible { outline: 4px solid #ffe15a; outline-offset: 3px; }
.game-back.game-back--right { left: auto; right: 16px; width: max-content; }
@media (max-width: 650px) {
  .game-back { left: 8px; bottom: 8px; min-height: 42px; padding: 8px 13px; font-size: 13px; }
  .game-back.game-back--right { left: auto; right: 8px; }
}