:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;font-weight:400;color:#333;background-color:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{margin:0;padding:0;box-sizing:border-box}body{margin:0;min-height:100vh}#app{max-width:1200px;margin:0 auto;padding:40px 20px}h1{font-size:2.5em;line-height:1.2;margin-bottom:20px;color:#000;font-weight:700}h2{font-size:1.5em;line-height:1.3;margin-bottom:12px;color:#06c;font-weight:600}h2 a{color:#06c;text-decoration:none}h2 a:hover{text-decoration:underline}p{font-size:1.1em;line-height:1.6;color:#666;margin-bottom:20px}.subtitle{font-size:1.2em;color:#666;margin-bottom:40px}.sections{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px;margin-top:40px}.section-card{padding:0}.section-card h2{margin-bottom:12px}.section-card p{margin-bottom:0}.back-link{display:inline-block;margin-top:30px;color:#06c;text-decoration:none;font-size:1em}.back-link:hover{text-decoration:underline}.navigation{display:flex;gap:30px;margin:30px 0;padding:20px 0;border-top:1px solid #ddd;border-bottom:1px solid #ddd;flex-wrap:wrap}.navigation a{color:#06c;text-decoration:none;font-size:1em}.navigation a:hover{text-decoration:underline}.subpages{margin-top:40px}.subpages h2{margin-bottom:20px;font-size:1.2em}.subpages h2 a{color:#06c;text-decoration:none}.subpages h2 a:hover{text-decoration:underline}.article-section{margin-bottom:40px;line-height:1.8}.article-section h2{margin-top:30px;margin-bottom:20px;color:#000;font-size:1.3em;font-weight:700}.article-list{margin-left:20px;margin-bottom:20px}.article-list li{margin-bottom:15px;color:#333;font-size:1em}.article-list strong{font-weight:600;color:#000}.external-link{color:#06c;text-decoration:none}.external-link:hover{text-decoration:underline}.internal-link{color:#06c;text-decoration:none}.internal-link:hover{text-decoration:underline}strong{font-weight:600;color:#000}@media (max-width: 768px){h1{font-size:2em}h2{font-size:1.3em}.sections{grid-template-columns:1fr;gap:25px}}