body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        header { display: flex; justify-content: space-between; align-items: center; padding: 15px 0; border-bottom: 2px solid #FF9900; }
        .logo { font-size: 28px; font-weight: bold; color: #FF6600; text-decoration: none; }
        nav ul { display: flex; list-style: none; gap: 20px; }
        nav a { text-decoration: none; color: #333; }
        .mobile-menu { display: none; }
        h1 { color: #FF6600; margin: 30px 0 15px; }
        h2 { color: #FF9900; margin: 25px 0 10px; }
        h3 { color: #FFCC00; margin: 20px 0 8px; }
        .download-btn, .login-btn { display: inline-block; padding: 12px 25px; background: #FF6600; color: white; border-radius: 5px; margin: 15px 0; text-decoration: none; }
        .stats-box { background: #f5f5f5; padding: 15px; border-radius: 8px; margin: 15px 0; }
        img { max-width: 100%; height: auto; border-radius: 8px; margin: 20px 0; }
        footer { margin-top: 40px; padding: 20px 0; border-top: 1px solid #ddd; }
        @media (max-width: 768px) {
            nav { display: none; position: absolute; top: 70px; left: 0; width: 100%; background: white; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
            nav.active { display: block; }
            nav ul { flex-direction: column; }
            .mobile-menu { display: block; }
        }