.flink { transition: all 0.3s ease; }
        .flink:hover { transform: translateY(-5px); background-color: #f8f9fa; }
        .hover-scale { transition: transform 0.3s ease; }
        .hover-scale:hover { transform: scale(1.05); }
        .gradient-bg { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
        .section-title { position: relative; padding-bottom: 1rem; }
        .section-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 60px; height: 3px; background: #667eea; }
        .nav-active { border-bottom: 2px solid #667eea; }
        .player-container { aspect-ratio: 16 / 9; }
        @media (max-width: 768px) {
            .mobile-stack { flex-direction: column; }
            .section-title::after { left: 50%; transform: translateX(-50%); }
        }