:root {
            --primary-color: #3498db;
            --secondary-color: #2c3e50;
            --accent-color: #e74c3c;
            --success-color: #27ae60;
            --warning-color: #f39c12;
            --light-bg: #f8f9fa;
            --dark-bg: #2c3e50;
        }
        
        body {
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            min-height: 100vh;
        }
        
        .nav-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            padding: 15px 0;
            box-shadow: 0 2px 15px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: bold;
            color: #2c3e50;
            text-decoration: none;
            font-size: 1.2rem;
        }

        .logo i {
            font-size: 1.5em;
            color: #3498db;
        }

        .nav-links {
            display: flex;
            gap: 20px;
        }
        
        .nav-links a {
            color: #2c3e50;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
            padding: 8px 12px;
            border-radius: 6px;
        }
        
        .nav-links a:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        
        .container {
            max-width: 1200px;
            margin: 30px auto;
            padding: 0 20px;
        }
        
        .header {
            text-align: center;
            margin-bottom: 40px;
            padding: 40px 30px;
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
        }
        
        .header h1 {
            margin-bottom: 15px;
            font-size: 2.5rem;
        }
        
        .header p {
            font-size: 1.2rem;
            opacity: 0.9;
        }
        
        .card {
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            padding: 30px;
            margin-bottom: 30px;
            border: none;
        }
        
        .card h2 {
            color: var(--secondary-color);
            margin-bottom: 25px;
            border-bottom: 3px solid var(--primary-color);
            padding-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin: 30px 0;
        }
        
        .feature-card {
            background: white;
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            border-top: 5px solid var(--primary-color);
            text-align: center;
        }
        
        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.15);
        }
        
        .feature-card i {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        
        .feature-card h3 {
            color: var(--secondary-color);
            margin-bottom: 15px;
            font-size: 1.3rem;
        }
        
        .download-section {
            text-align: center;
            padding: 50px 40px;
            background: linear-gradient(135deg, #d63031, #c23616); /* Rojo oscuro */
           color: white !important;
            border-radius: 15px;
            margin: 50px 0;
            position: relative;
            overflow: hidden;
        }
        
        .download-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
           /* background: radial-gradient(circle, rgb(255, 255, 255) 1px, transparent 1px);*/
            background-size: 20px 20px;
            animation: float 20s linear infinite;
        }
        .download-section h2 {
    color: white !important;
}
        @keyframes float {
            0% { transform: translate(0, 0) rotate(0deg); }
            100% { transform: translate(-20px, -20px) rotate(360deg); }
        }
        
        .download-btn {
            background: white;
            color: #d63031; /* Rojo oscuro */
            border: none;
            padding: 15px 40px;
            font-size: 1.2rem;
            border-radius: 50px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 12px;
            margin-top: 25px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.2);
            position: relative;
            z-index: 2;
        }
        
        .download-btn:hover {
            transform: translateY(-4px) scale(1.05);
            box-shadow: 0 10px 25px rgba(0,0,0,0.3);
        }
        
        .instructions {
            background: linear-gradient(135deg, #f1f8ff, #e3f2fd);
            border-radius: 12px;
            padding: 30px;
            margin-top: 30px;
            border-left: 5px solid var(--primary-color);
        }
        
        .instructions h3 {
            color: var(--secondary-color);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .instructions ol {
            padding-left: 20px;
        }
        
        .instructions li {
            margin-bottom: 12px;
            padding-left: 10px;
        }
        
        .instructions strong {
            color: var(--primary-color);
        }
        
        .code-block {
            background: #1e2a3a;
            color: #e3f2fd;
            padding: 25px;
            border-radius: 10px;
            font-family: 'Consolas', 'Courier New', monospace;
            overflow-x: auto;
            margin: 25px 0;
            border-left: 5px solid var(--primary-color);
            font-size: 0.9rem;
            line-height: 1.5;
        }
        
        .param-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin: 25px 0;
        }
        
        .param-card {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary-color);
        }
        
        .param-card strong {
            color: var(--primary-color);
            display: block;
            margin-bottom: 8px;
        }
        
        .version-badge {
            background: var(--warning-color);
            color: white;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: bold;
            margin-left: 15px;
        }
        
        .footer-card {
            text-align: center;
            background: var(--secondary-color);
            color: white;
            border-radius: 15px;
            padding: 25px;
        }
        
        .mode-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        
        .mode-card {
            background: white;
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            border-top: 4px solid;
            transition: transform 0.3s ease;
        }
        
        .mode-card:hover {
            transform: translateY(-5px);
        }
        
        .mode-card.simple {
            border-top-color: var(--success-color);
        }
        
        .mode-card.exclude {
            border-top-color: var(--warning-color);
        }
        
        .mode-card.sync {
            border-top-color: var(--accent-color);
        }
        
        .mode-card i {
            font-size: 2.5rem;
            margin-bottom: 15px;
        }
        
        .mode-card.simple i { color: var(--success-color); }
        .mode-card.exclude i { color: var(--warning-color); }
        .mode-card.sync i { color: var(--accent-color); }
        
        @media (max-width: 768px) {
            .nav-container {
                flex-direction: column;
                gap: 15px;
            }
            
            .nav-links {
                width: 100%;
                justify-content: center;
                flex-wrap: wrap;
            }
            
            .features-grid {
                grid-template-columns: 1fr;
            }
            
            .header h1 {
                font-size: 2rem;
            }
            
            .param-grid {
                grid-template-columns: 1fr;
            }
        }