body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1000px; margin: 0 auto; padding: 20px; }
        h1 { color: #FF6B35; border-bottom: 3px solid #FF6B35; padding-bottom: 10px; }
        h2 { color: #00A86B; margin-top: 30px; }
        h3 { color: #FF9F1C; }
        .logo { font-size: 28px; font-weight: bold; color: #FF6B35; text-shadow: 2px 2px 4px rgba(0,0,0,0.1); }
        .nav { background-color: #FF6B35; padding: 15px; margin-bottom: 20px; }
        .nav a { color: white; margin-right: 15px; text-decoration: none; }
        .mobile-toggle { display: none; background: #00A86B; color: white; padding: 10px; cursor: pointer; }
        .content-img { max-width: 100%; height: auto; margin: 20px 0; }
        .download-btn, .login-btn { display: inline-block; padding: 12px 25px; background: #00A86B; color: white; border-radius: 5px; text-decoration: none; margin: 10px 0; }
        .download-btn:hover, .login-btn:hover { background: #FF6B35; }
        .tag { background: #f0f0f0; padding: 5px 10px; border-radius: 15px; margin: 5px; display: inline-block; }
        footer { margin-top: 50px; padding: 20px; background: #f8f8f8; }
        @media (max-width: 768px) {
            .nav { display: none; }
            .mobile-toggle { display: block; }
            .nav.active { display: block; }
        }