body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; background: linear-gradient(135deg, #ff9a9e 0%, #fad0c4 100%); }
        header { display: flex; justify-content: space-between; align-items: center; padding: 15px 0; }
        .logo { font-size: 28px; font-weight: bold; color: #e74c3c; text-shadow: 2px 2px 4px rgba(0,0,0,0.2); }
        nav ul { display: flex; list-style: none; gap: 20px; }
        nav a { text-decoration: none; color: #2c3e50; font-weight: 500; }
        .mobile-menu { display: none; background: #e74c3c; color: white; border: none; padding: 10px; border-radius: 5px; }
        h1 { color: #e74c3c; text-align: center; margin-bottom: 30px; }
        h2 { color: #3498db; border-bottom: 2px solid #3498db; padding-bottom: 5px; margin-top: 40px; }
        h3 { color: #2ecc71; }
        .btn { display: inline-block; background: #e74c3c; color: white; padding: 12px 25px; margin: 15px 0; border-radius: 5px; text-decoration: none; font-weight: bold; }
        .download-btn { background: #27ae60; }
        .login-btn { background: #3498db; }
        img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 8px; }
        footer { margin-top: 50px; padding: 20px 0; text-align: center; font-size: 14px; color: #7f8c8d; }
        @media (max-width: 768px) {
            nav { display: none; }
            .mobile-menu { display: block; }
            .active-nav { display: flex; flex-direction: column; gap: 10px; }
            body { padding: 10px; }
        }