* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #2c3e50 0%, #34495e 50%, #2c3e50 100%);
            min-height: 100vh;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }

        .hero {
            text-align: center;
            padding: 60px 0;
            /* background: linear-gradient(135deg, rgba(52, 73, 94, 0.9), rgba(44, 62, 80, 0.8));
             */
            background: linear-gradient(135deg, #3498db, #2980b9);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            margin-bottom: 40px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .logo-container {
            margin-bottom: 30px;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .logo {
            width: 120px;
            height: 120px;
            background: linear-gradient(135deg, #3498db, #2980b9);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 30px rgba(52, 152, 219, 0.4);
            border: 3px solid rgba(255, 255, 255, 0.2);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .logo:hover {
            transform: scale(1.05);
            box-shadow: 0 15px 40px rgba(52, 152, 219, 0.6);
        }

        .logo img {
            width: 80px;
            height: 80px;
            object-fit: contain;
            border-radius: 10px;
        }

        .logo-placeholder {
            font-size: 2.5rem;
            color: white;
            font-weight: bold;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }

        .logo::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
            transform: rotate(45deg);
            transition: transform 0.6s;
        }

        .logo:hover::before {
            transform: rotate(45deg) translate(50%, 50%);
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 700;
            color: white;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            animation: fadeInUp 1s ease-out;
        }

        .hero p {
            font-size: 1.3rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 30px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            animation: fadeInUp 1s ease-out 0.2s both;
        }

        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 50px 0;
        }

        .feature-card {
            /* background: linear-gradient(135deg, rgba(52, 73, 94, 0.8), rgba(44, 62, 80, 0.7)); */
            background: linear-gradient(135deg, #3498db, #2980b9);
            backdrop-filter: blur(10px);
            padding: 30px;
            border-radius: 15px;
            text-align: center;
            border: 1px solid rgba(149, 165, 166, 0.3);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            animation: fadeInUp 1s ease-out 0.4s both;
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        }

        .feature-icon {
            font-size: 3rem;
            margin-bottom: 20px;
            color: #3498db;
        }

        .feature-card h3 {
            font-size: 1.5rem;
            color: white;
            margin-bottom: 15px;
        }

        .feature-card p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1rem;
        }

        .download-section {
            /* background: linear-gradient(135deg, rgba(52, 73, 94, 0.9), rgba(44, 62, 80, 0.8)); */
            background: linear-gradient(135deg, #3498db, #2980b9);
            backdrop-filter: blur(15px);
            padding: 50px;
            border-radius: 20px;
            text-align: center;
            margin: 40px 0;
            border: 1px solid rgba(149, 165, 166, 0.3);
            animation: fadeInUp 1s ease-out 0.6s both;
        }

        .download-section h2 {
            font-size: 2.5rem;
            color: white;
            margin-bottom: 30px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }

        .download-btn {
            display: inline-block;
            /* background: linear-gradient(45deg, #3498db, #2980b9); */
            background: linear-gradient(135deg, rgba(52, 73, 94, 0.9), rgba(44, 62, 80, 0.8));
            color: white;
            padding: 20px 40px;
            text-decoration: none;
            border-radius: 50px;
            font-size: 1.2rem;
            font-weight: 600;
            margin: 15px;
            transition: all 0.3s ease;
            box-shadow: 0 10px 30px rgba(52, 152, 219, 0.4);
            position: relative;
            overflow: hidden;
        }

        .download-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(52, 152, 219, 0.6);
        }

        .download-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.5s;
        }

        .download-btn:hover::before {
            left: 100%;
        }

        .whatsapp-btn {
            background: linear-gradient(45deg, #25D366, #128C7E);
            box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4);
        }

        .whatsapp-btn:hover {
            box-shadow: 0 15px 40px rgba(37, 211, 102, 0.6);
        }

        .manual-btn {
            background: linear-gradient(45deg, #e74c3c, #c0392b);
            box-shadow: 0 10px 30px rgba(231, 76, 60, 0.4);
        }

        .manual-btn:hover {
            box-shadow: 0 15px 40px rgba(231, 76, 60, 0.6);
        }

        .contact-info {
            /* background: linear-gradient(135deg, rgba(52, 73, 94, 0.7), rgba(44, 62, 80, 0.6)); */
            background: linear-gradient(135deg, #3498db, #2980b9);
            backdrop-filter: blur(10px);
            padding: 30px;
            border-radius: 15px;
            margin: 30px 0;
            border: 1px solid rgba(149, 165, 166, 0.3);
            animation: fadeInUp 1s ease-out 0.8s both;
        }

        .contact-info h3 {
            color: white;
            font-size: 1.5rem;
            margin-bottom: 15px;
            text-align: center;
        }

        .contact-info p {
            color: rgba(255, 255, 255, 0.9);
            text-align: center;
            font-size: 1.1rem;
        }

        .footer {
            text-align: center;
            padding: 30px 0;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 50px;
        }
   
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

            @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .hero p {
                font-size: 1.1rem;
            }
            
            .download-section, .screenshots-section {
                padding: 30px 20px;
            }
            
            .download-btn {
                display: block;
                margin: 15px auto;
                width: fit-content;
            }


             .screenshots-grid {
               grid-template-columns: 1fr !important;
               gap: 20px;
            }

            .screenshot-placeholder {
                height: 200px;
            }

            .program-interface {
                font-size: 0.8rem;
            }

            .logo {
                width: 100px;
                height: 100px;
            }

            .logo img {
                width: 70px;
                height: 70px;
            }

            .logo-placeholder {
                font-size: 2rem;
            }
        }

        .version-info {
            background: linear-gradient(135deg, rgba(52, 73, 94, 0.6), rgba(44, 62, 80, 0.5));
            backdrop-filter: blur(10px);
            padding: 20px;
            border-radius: 10px;
            margin: 20px 0;
            border: 1px solid rgba(149, 165, 166, 0.3);
            text-align: center;
        }

        .version-info p {
            color: rgba(255, 255, 255, 1);
            margin: 5px 0;
        }

        .highlight {
            background: rgb(85, 85, 85);
            padding: 2px 8px;
            border-radius: 4px;
            color: #ffffff;
            font-weight: 600;
        }

        /* Sección de Screenshots */
        .screenshots-section {
            background: linear-gradient(135deg, rgba(52, 73, 94, 0.9), rgba(44, 62, 80, 0.8));
            backdrop-filter: blur(15px);
            padding: 50px 30px;
            border-radius: 20px;
            margin: 40px 0;
            border: 1px solid rgba(149, 165, 166, 0.3);
            animation: fadeInUp 1s ease-out 1s both;
        }

        .screenshots-section h2 {
            font-size: 2.5rem;
            color: white;
            margin-bottom: 40px;
            text-align: center;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }

        .screenshots-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }

        .screenshot-item {
            background: linear-gradient(135deg, rgba(236, 240, 241, 0.95), rgba(189, 195, 199, 0.9));
            border-radius: 15px;
            padding: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 2px solid rgba(52, 152, 219, 0.3);
        }

        /* .screenshot-item img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 0 auto;
        } */


        .screenshot-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
            border-color: #3498db;
        }

        .screenshot-placeholder {
            width: 100%;
            height: 250px;
            background: linear-gradient(135deg, #ecf0f1, #bdc3c7);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #34495e;
            font-weight: 500;
            border: 2px dashed #95a5a6;
            margin-bottom: 15px;
            position: relative;
            overflow: hidden;
        }

        .screenshot-placeholder::before {
            content: '📸';
            font-size: 3rem;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -70%);
            opacity: 0.3;
        }

        .screenshot-item h3 {
            color: #2c3e50;
            font-size: 1.3rem;
            margin-bottom: 10px;
            text-align: center;
        }

        .screenshot-item p {
            color: #34495e;
            font-size: 0.95rem;
            text-align: center;
            line-height: 1.4;
        }

        .program-interface {
            background: linear-gradient(145deg, #f8f9fa, #e9ecef);
            border: 3px solid #3498db;
            border-radius: 8px;
            padding: 15px;
            font-family: 'Courier New', monospace;
            font-size: 0.9rem;
            color: #2c3e50;
            margin: 10px 0;
            box-shadow: inset 0 2px 5px rgba(0,0,0,0.1);
        }

        .window-header {
            background: linear-gradient(135deg, #3498db, #2980b9);
            color: white;
            padding: 8px 15px;
            margin: -15px -15px 15px -15px;
            border-radius: 5px 5px 0 0;
            font-family: 'Segoe UI', sans-serif;
            font-weight: 600;
            font-size: 0.9rem;
        }