body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; margin: 0; padding: 0; background: #f5f5ff; }
        .header { background: linear-gradient(135deg, #ff6b6b, #4ecdc4); color: white; padding: 15px; text-align: center; position: relative; }
        .logo { font-size: 28px; font-weight: bold; letter-spacing: 1px; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }
        .nav { display: flex; justify-content: center; gap: 20px; margin-top: 10px; }
        .nav a { color: white; text-decoration: none; font-weight: 500; }
        .mobile-nav-toggle { display: none; position: absolute; top: 15px; right: 15px; }
        .container { max-width: 1200px; margin: 20px auto; padding: 0 20px; }
        h1 { color: #2c3e50; border-bottom: 3px solid #ff6b6b; padding-bottom: 10px; }
        h2 { color: #34495e; margin-top: 30px; }
        h3 { color: #7f8c8d; }
        .download-btn, .login-btn { display: inline-block; background: #27ae60; color: white; padding: 12px 25px; margin: 15px 0; border-radius: 5px; text-decoration: none; font-weight: bold; }
        .login-btn { background: #3498db; }
        .feature-box { background: white; border-radius: 8px; padding: 20px; margin: 20px 0; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
        .image-container { text-align: center; margin: 30px 0; }
        .image-container img { max-width: 100%; height: auto; border-radius: 8px; }
        .tags { margin: 20px 0; }
        .tags a { background: #e0e0e0; color: #333; padding: 5px 10px; border-radius: 20px; text-decoration: none; margin: 0 5px; }
        .footer { background: #2c3e50; color: white; text-align: center; padding: 20px; margin-top: 40px; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; display: none; }
            .nav.active { display: flex; }
            .mobile-nav-toggle { display: block; }
            .container { padding: 0 15px; }
        }