   }

        @keyframes twinkle {
            0%, 100% { opacity: var(--opacity); }
            50% { opacity: 0.2; }
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>Star Jumper</h1>
        <p>Jump through platforms, collect stars, and reach for the sky!</p>
        <button class="play-button" onclick="window.location.href='game.html'">Play Now</button>
    </div>

    <script>
        // Create twinkling stars
        function createStars() {
            const container = do