body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        header { background-color: #FFD700; padding: 15px; text-align: center; position: relative; }
        .logo { font-size: 28px; font-weight: bold; color: #8B0000; }
        nav { display: flex; justify-content: center; gap: 20px; margin-top: 10px; }
        nav a { color: #8B0000; text-decoration: none; font-weight: bold; }
        .mobile-nav-btn { display: none; position: absolute; top: 10px; right: 10px; }
        h1 { color: #8B0000; text-align: center; margin-bottom: 30px; }
        h2 { color: #D2691E; margin-top: 40px; border-bottom: 2px solid #FFD700; padding-bottom: 5px; }
        h3 { color: #CD853F; margin-top: 25px; }
        .download-btn, .login-btn { display: inline-block; background-color: #8B0000; color: white; padding: 12px 25px; margin: 15px 0; border-radius: 5px; text-decoration: none; font-weight: bold; }
        .img-container { text-align: center; margin: 30px 0; }
        img { max-width: 100%; height: auto; border: 2px solid #FFD700; }
        footer { background-color: #333; color: white; text-align: center; padding: 20px; margin-top: 50px; }
        @media (max-width: 768px) {
            .mobile-nav-btn { display: block; }
            nav { display: none; flex-direction: column; align-items: center; }
            nav.active { display: flex; }
            body { padding: 10px; }
        }