/* ===== Animations ===== */
      .reveal {
        opacity: 0;
        transform: translateY(12px);
        transition: opacity 0.6s ease, transform 0.6s ease;
      }
      .reveal.visible {
        opacity: 1;
        transform: none;
      }
      @media (prefers-reduced-motion: reduce) {
        .tile,
        .btn,
        .reveal {
          transition: none;
        }
      }