html { scroll-behavior: smooth; }
    ::-webkit-scrollbar { width: 0; }

    .hero-gradient {
      background: linear-gradient(-45deg, #f8fafc 0%, #f0f9ff 25%, #ecfdf5 50%, #f0fdf4 75%, #f8fafc 100%);
      background-size: 400% 400%;
      animation: gradient 20s ease infinite;
    }

    .card-hover { transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1); }
    .card-hover:hover { transform: translateY(-8px); box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1); }

    .btn-premium { position: relative; overflow: hidden; background-color: #4f66e4; }
    .btn-premium::before {
      content: '';
      position: absolute;
      top: 0; left: -100%;
      width: 100%; height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
      transition: 0.6s;
    }
    .btn-premium:hover::before { left: 100%; }

    .reveal { opacity: 0; transform: translateY(40px); transition: all 0.8s cubic-bezier(0.2, 0.8, 0.2, 1); }
    .reveal.visible { opacity: 1; transform: translateY(0); }

    .mobile-menu { position: fixed; top: 0; right: -100%; width: 280px; height: 100vh; background: white; box-shadow: -8px 0 32px rgba(0,0,0,0.1); transition: right 0.4s cubic-bezier(0.2, 0.8, 0.2, 1); z-index: 100; padding-top: 5rem; }
    .mobile-menu.open { right: 0; }

    .overlay-main { position: fixed; inset: 0; background: rgba(0,0,0,0.4); opacity: 0; visibility: hidden; transition: all 0.3s; z-index: 99; }
    .overlay-main.open { opacity: 1; visibility: visible; }

    .card-hover .bg-cover { background-size: cover; background-position: center; }

    .ranking-card img { transition: transform 0.3s ease; }
    .ranking-card:hover img { transform: scale(1.1); }

    /* Benefits card 3D */
    #benefits-grid>div { transform: perspective(1000px) rotateX(0deg); transition: transform .6s cubic-bezier(.2, .8, .2, 1), box-shadow .6s; }
    #benefits-grid>div:hover { transform: perspective(1000px) rotateX(8deg) translateY(-16px); }

    /* mobileSheet helpers */
    #mobileSheet { pointer-events: none; }
    #mobileSheet>* { pointer-events: auto; }
    #mobileSheet .translate-y-full { transform: translateY(100%); }