: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}}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:linear-gradient(135deg,#1a1a2e,#16213e,#0f3460);min-height:100vh;color:#fff}.app{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:20px}.app-header{text-align:center;margin-bottom:20px}.app-header h1{font-size:2.5rem;margin-bottom:8px;text-shadow:2px 2px 4px rgba(0,0,0,.5)}.app-header p{font-size:1.1rem;color:#aaa}.game-container{flex:1;display:flex;justify-content:center;align-items:flex-start;width:100%;max-width:1220px}.app-footer{margin-top:20px;padding:15px 25px;background:#0000004d;border-radius:8px;text-align:center}.app-footer p{font-size:.95rem;color:#ccc}.app-footer strong{color:#4ecdc4}@media(max-width:1240px){.game-container{overflow-x:auto;padding:10px}}