: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{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}.logo{height:6em;padding:1.5em;will-change:filter;transition:filter .3s}.logo:hover{filter:drop-shadow(0 0 2em #646cffaa)}.logo.react:hover{filter:drop-shadow(0 0 2em #61dafbaa)}@keyframes logo-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media(prefers-reduced-motion:no-preference){a:nth-of-type(2) .logo{animation:logo-spin infinite 20s linear}}.scanner-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:20px;background:#f8fafc}.scanner-header{margin-bottom:30px;text-align:center}.scanner-header h1{font-size:2rem;color:#1a202c;margin-bottom:10px}.scanner-box{width:100%;max-width:400px;aspect-ratio:1 / 1;border-radius:20px;overflow:hidden;box-shadow:0 10px 25px #0000001a;border:4px solid #fff}.scanner-error{margin-top:20px;background:#fff5f5;border:1px solid #feb2b2;padding:15px;border-radius:12px;text-align:center;color:#c53030;max-width:400px}.scanner-error button{margin-top:10px;background:#f56565;color:#fff;border:none;padding:5px 15px;border-radius:5px;cursor:pointer}.scanner-footer{margin-top:30px;color:#718096;font-size:.9rem}.language-selector{margin:20px 0;padding:10px}.language-selector select{padding:5px 10px;border-radius:4px;border:1px solid #ccc;background:#fff;color:#333}.quiz-container{display:flex;justify-content:center;align-items:center;padding:40px 20px}.quiz-card{background:#fff;border:1px solid #eee;border-radius:12px;padding:30px;max-width:500px;width:100%;text-align:left;color:#2d3748}.question-title{font-size:1.5rem;margin-bottom:1.5rem;color:#1a202c}.answers-grid{display:grid;gap:12px}.answer-button{background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:12px 16px;font-size:1rem;color:#4a5568;cursor:pointer;transition:background .2s;text-align:left}.answer-button:hover:not(:disabled){background:#f7fafc}.answer-button.correct{background:#c6f6d5;border-color:#48bb78}.answer-button.incorrect{background:#fed7d7;border-color:#f56565}.answer-button:disabled{cursor:default}.result-container{margin-top:2rem;padding-top:1.5rem;border-top:1px solid #edf2f7}.result-text{font-weight:700;font-size:1.1rem;margin-bottom:1rem}.result-text.success{color:#38a169}.result-text.failure{color:#e53e3e}.explanation{background:#f7fafc;padding:1rem;border-radius:6px;font-size:.9rem;margin-bottom:1rem}.reset-button{background:#4a5568;color:#fff;border:none;border-radius:6px;padding:8px 16px;cursor:pointer}