:root {
            --bg-color: #f8fafc;
            --text-color: #0f172a;
            --card-bg: #ffffff;
            --border-color: #e2e8f0;
        }



        /* Sección Principal */
        .sponsors-section {
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
        }

        .sponsors-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-color);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 40px;
            position: relative;
            display: inline-block;
        }

        .sponsors-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: #2563eb;
            border-radius: 2px;
        }

        /* OPCCIÓN 1: GRID MODERNO CON HOVER EFFECT */
        .sponsors-grid {
            display: grid;
            /* Se adapta automáticamente según la pantalla */
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 20px;
            align-items: center;
        }

        .sponsor-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            aspect-ratio: 5 / 3; /* Respeta tu proporción original 500x300 */
            transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            cursor: pointer;
        }

        .sponsor-card img {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
            /* Convertir a escala de grises y reducir opacidad por defecto */
            filter: grayscale(0%) opacity(1);
            transition: filter 0.3s ease, transform 0.3s ease;
        }

        /* Efecto al pasar el cursor */
        .sponsor-card:hover {
            border-color: #cbd5e1;
            transform: translateY(-5px);
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
        }

        .sponsor-card:hover img {
            /* Restablecer color normal */
            filter: grayscale(0%) opacity(1);
            transform: scale(1.05);
        }

        /* Responsivo para móviles */
        @media (max-width: 640px) {
            .sponsors-grid {
                grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
                gap: 12px;
            }
        }