:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--bg-color: #0d0d0d;--card-bg: #1a1a1a;--text-color: #ffffff;--accent: #f5f5f5;--shadow: rgba(255, 255, 255, .1);font-family:Segoe UI,Roboto,Helvetica,Arial,sans-serif}body{background-color:var(--bg-color);color:var(--text-color);margin:0;padding:0;display:flex;justify-content:center;min-height:100vh}.logo{height:200px;transition:filter .3s,transform .3s;box-shadow:0 0 10px #fff,0 0 20px #fff}.logo:hover{transform:scale(1.05);box-shadow:0 0 20px #fff,0 0 40px #fff,0 0 60px #fff}h1{font-size:3rem;margin:2rem 0;text-transform:uppercase;letter-spacing:2px;text-shadow:0 0 10px #ff000044,0 0 20px #00ffff44;box-shadow:0 0 15px #fff,0 0 30px #fff}.card{background:var(--card-bg);color:#fff;border-radius:12px;padding:20px;max-width:300px;margin:20px auto;box-shadow:0 0 10px #fff,0 0 20px #fff;transition:box-shadow .3s ease}.card:hover{box-shadow:0 0 20px #fff,0 0 40px #fff,0 0 60px #fff}.game-btn{background:#000;border:solid 2px #fff;color:#fff;font-size:18px;padding:12px 24px;border-radius:8px;cursor:pointer;transition:transform .1s,background .2s,box-shadow .3s;box-shadow:0 0 10px #fff,0 0 20px #fff}.game-btn:hover{box-shadow:0 0 20px #fff,0 0 40px #fff,0 0 10px #fff}.game-btn:active{transform:scale(.95)}