: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:start;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}}body{font-family:Arial,sans-serif;background-color:#f4f4f4;color:#333;margin:0;padding:20px;text-align:left;transition:background .3s,color .3s}textarea{width:500px;height:50px;padding:10px;font-size:16px;border:1px solid #ccc;border-radius:5px;background:#fff;color:#333;transition:background .3s,color .3s,border-color .3s}textarea:focus{outline:none;border-color:#007bff}.highlight{color:red;font-weight:700}.character-key{display:inline-block;font-weight:700;padding:2px 5px;border-radius:4px;font-family:monospace;font-size:1.5em;margin-right:2px}.character-key-box{display:inline-block;padding:10px;border:1px solid #ccc;border-radius:5px;background:#fff;text-align:left;margin-top:20px}.character-key-box h3{font-size:1.2em;font-weight:700;margin-bottom:10px}.character-key-box p{display:flex;align-items:center;margin:5px 0;font-size:1em}.char-l{background-color:#fddf85;color:#000}.char-I{background-color:#b3d9ff;color:#000}.char-1{background-color:#d4a3ff;color:#000}.char-O{background-color:#ffb3b3;color:#000}.char-0{background-color:#99e699;color:#000}@media (prefers-color-scheme: dark){body{background-color:#121212;color:#e0e0e0}textarea{background:#333;color:#e0e0e0;border:1px solid #555}textarea:focus{border-color:#66b2ff}.character-key-box{background:#1e1e1e;border:1px solid #444;color:#fff;box-shadow:0 4px 10px #ffffff1a}.character-key-box h3{color:#f0f0f0}.character-key-box p{color:#d0d0d0}}