body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 2.2em; font-weight: bold; color: #009966; text-shadow: 2px 2px 4px rgba(0,0,0,0.1); }
        nav { background: #f8f8f8; padding: 15px; border-radius: 8px; margin-bottom: 25px; }
        nav a { margin: 0 15px; text-decoration: none; color: #006633; font-weight: 500; }
        .mobile-nav-btn { display: none; background: #009966; color: white; padding: 8px 12px; border-radius: 5px; cursor: pointer; }
        h1 { color: #006633; border-bottom: 3px solid #00cc99; padding-bottom: 10px; }
        h2 { color: #008855; margin-top: 30px; }
        h3 { color: #00aa77; }
        .download-btn, .login-btn { display: inline-block; background: #00cc99; color: white; padding: 12px 25px; margin: 15px 0; border-radius: 6px; text-decoration: none; font-weight: bold; }
        .feature-box { background: #f0fff5; padding: 20px; border-radius: 8px; margin: 20px 0; }
        .stats { background: #e8f8f0; padding: 15px; border-left: 4px solid #00cc99; }
        img { max-width: 100%; height: auto; border-radius: 8px; margin: 20px 0; }
        footer { margin-top: 50px; padding: 20px; background: #f8f8f8; border-radius: 8px; }
        @media (max-width: 768px) {
            .mobile-nav-btn { display: block; }
            nav { display: none; }
            nav.active { display: block; }
            body { padding: 10px; }
        }