        /* Reseteo y Estilos Base Modernos */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
            background: url('../img/IMG_5943.jpg') no-repeat center center fixed;
            background-size: cover;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            color: #333;
            position: relative;
        }

        /* Capa de superposición para mejorar contraste y legibilidad */
        body::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.65);
            /* Tono slate oscuro translúcido */
            z-index: 1;
        }

        /* Contenedor Principal */
        .gateway-container {
            position: relative;
            z-index: 2;
            background: rgba(255, 255, 255, 0.98);
            padding: 40px 45px;
            border-radius: 16px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            text-align: center;
            max-width: 480px;
            width: 90%;
            margin-bottom: 80px;
            /* Espacio para el footer flotante */
        }

        /* Encabezado y Marca */
        .logo-container {
            margin-bottom: 8px;
        }

        .logo {
            max-width: 200px;
            height: auto;
            object-fit: contain;
        }

        .slogan {
            font-size: 1.1rem;
            color: #64748b;
            margin-bottom: 30px;
            font-weight: 500;
        }

        .instruction-title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: #1e293b;
        }

        /* Selector de Países */
        .country-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .country-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            text-decoration: none;
            color: #334155;
            font-weight: 600;
            font-size: 1.1rem;
            background: #ffffff;
            transition: all 0.3s ease;
        }

        /* Color Primario CEPE: #90C033 */
        .country-item:hover {
            border-color: #90C033;
            background-color: #f7fbf0;
            color: #5c7e1c;
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(144, 192, 51, 0.2);
        }

        .country-info {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .flag-img {
            width: 32px;
            height: 32px;
            object-fit: cover;
            border-radius: 50%;
            border: 1px solid #e2e8f0;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
        }

        .globe-icon {
            width: 32px;
            height: 32px;
            color: #94a3b8;
            transition: color 0.3s ease;
        }

        .country-item:hover .globe-icon {
            color: #90C033;
        }

        .domain-badge {
            font-size: 0.8rem;
            font-weight: 500;
            color: #94a3b8;
            background: #f1f5f9;
            padding: 3px 8px;
            border-radius: 6px;
            margin-left: 6px;
            transition: all 0.3s ease;
        }

        .country-item:hover .domain-badge {
            background: #e6f3d1;
            color: #5c7e1c;
        }

        .arrow-icon {
            font-size: 1.2rem;
            color: #cbd5e1;
            transition: all 0.3s ease;
        }

        .country-item:hover .arrow-icon {
            color: #90C033;
            transform: translateX(5px);
        }

        /* Pie de Página Minimalista y Moderno */
        .footer-modern {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            z-index: 2;
            padding: 15px 20px;
            background: rgba(15, 23, 42, 0.4);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-content {
            max-width: 1000px;
            margin: 0 auto;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.85rem;
            color: #e2e8f0;
        }

        .footer-item {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-item a {
            color: #e2e8f0;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .footer-item a:hover {
            color: #90C033;
        }

        .footer-icon {
            width: 16px;
            height: 16px;
            color: #90C033;
        }

        /* Separador visual entre items del footer (solo desktop) */
        .separator {
            color: rgba(255, 255, 255, 0.2);
        }

        /* Adaptabilidad Móvil */
        @media (max-width: 768px) {
            .gateway-container {
                padding: 30px 25px;
                margin-bottom: 120px;
                /* Más espacio en móvil para el footer de dos líneas */
            }

            .footer-content {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }

            .separator {
                display: none;
            }
        }