body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 2.5em; font-weight: bold; color: #FF6B35; text-shadow: 2px 2px 4px rgba(0,0,0,0.2); }
        nav { background: #1A1A2E; padding: 15px; margin-bottom: 30px; }
        nav a { color: white; text-decoration: none; margin: 0 15px; }
        .mobile-menu { display: none; }
        h1 { color: #16213E; border-bottom: 3px solid #FF6B35; }
        h2 { color: #0F3460; margin-top: 30px; }
        h3 { color: #4A148C; }
        .download-btn { background: #4CAF50; color: white; padding: 12px 25px; border-radius: 5px; text-decoration: none; display: inline-block; margin: 15px 0; }
        .login-btn { background: #2196F3; color: white; padding: 12px 25px; border-radius: 5px; text-decoration: none; display: inline-block; margin: 15px 0; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .gallery { display: flex; flex-wrap: wrap; gap: 15px; }
        .gallery img { width: calc(50% - 10px); }
        @media (max-width: 768px) {
            .logo { font-size: 1.8em; }
            nav { padding: 10px; }
            .mobile-menu { display: block; background: #FF6B35; color: white; padding: 10px; text-align: center; cursor: pointer; }
            .desktop-menu { display: none; }
            .gallery img { width: 100%; }
        }