body { font-family: 'Inter', sans-serif; }
        .breathing-shadow {
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
            animation: breathe 4s infinite ease-in-out;
        }
        @keyframes breathe {
            0%, 100% { box-shadow: 0 0 20px rgba(0, 0, 0, 0.05); transform: translateY(0); }
            50% { box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1); transform: translateY(-5px); }
        }