body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        header { background: #ff6b35; color: white; padding: 20px; text-align: center; position: relative; }
        .logo { font-size: 2.5em; font-weight: bold; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }
        nav { display: flex; justify-content: center; gap: 20px; margin-top: 15px; }
        nav a { color: white; text-decoration: none; font-weight: bold; }
        .mobile-nav-btn { display: none; position: absolute; top: 20px; right: 20px; background: white; color: #ff6b35; border: none; padding: 10px; cursor: pointer; }
        h1 { color: #ff6b35; border-bottom: 3px solid #ff9e5e; padding-bottom: 10px; }
        h2 { color: #ff9e5e; border-left: 4px solid #ff6b35; padding-left: 10px; }
        h3 { color: #e87a50; }
        .download-btn { background: #4CAF50; color: white; padding: 12px 25px; text-decoration: none; border-radius: 5px; margin: 15px 0; display: inline-block; }
        .login-btn { background: #2196F3; color: white; padding: 12px 25px; text-decoration: none; border-radius: 5px; margin: 15px 0; display: inline-block; }
        .image-container { text-align: center; margin: 25px 0; }
        .image-container img { max-width: 100%; height: auto; border-radius: 8px; }
        footer { background: #333; color: white; text-align: center; padding: 20px; margin-top: 30px; }
        @media (max-width: 768px) {
            nav { display: none; flex-direction: column; align-items: center; }
            nav.active { display: flex; }
            .mobile-nav-btn { display: block; }
            .logo { font-size: 2em; }
        }