:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme: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;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}.navigation{background:linear-gradient(135deg,#667eea,#764ba2);box-shadow:0 2px 10px #0000001a;position:fixed;top:0;left:0;right:0;z-index:1000}.nav-container{max-width:1200px;margin:0 auto;padding:0 2rem;display:flex;justify-content:space-between;align-items:center;height:4rem}.nav-brand{font-size:1.5rem;font-weight:600;color:#fff;text-decoration:none;letter-spacing:1px}.nav-brand:hover{color:#ffffffe6}.nav-links{display:flex;list-style:none;margin:0;padding:0;gap:2rem}.nav-link{color:#ffffffe6;text-decoration:none;padding:.5rem 1rem;border-radius:4px;transition:all .3s ease;font-weight:500}.nav-link:hover{color:#fff;background-color:#ffffff1a}.nav-link.active{color:#fff;background-color:#fff3}@media (max-width: 768px){.nav-container{padding:0 1rem;height:3.5rem}.nav-brand{font-size:1.3rem}.nav-links{gap:1rem}.nav-link{padding:.4rem .8rem;font-size:.9rem}}.content-section-subsection{margin-top:2rem;padding:1.5rem;background:#ffffff08;border-radius:10px;border:1px solid rgba(255,255,255,.05);text-align:left}.content-section-content-section{margin:2rem 0;padding:1.5rem 0}.content-section-content-section:not(:last-child){border-bottom:1px solid rgba(255,255,255,.2)}.content-section-card{background:#ffffff0d;border-radius:15px;padding:2rem;border:1px solid rgba(255,255,255,.1);transition:all .3s ease;text-align:left}.content-section-card:hover{transform:translateY(-5px);background:#ffffff14;border-color:#fff3}.content-section-subsection h3{color:#764ba2;margin-bottom:1rem;font-size:1.3rem}.content-section-content-section h3{font-size:1.8rem;margin:0 0 1rem;font-weight:400;color:#f0f0f0}.content-section-card h3{margin-bottom:1rem;font-size:1.4rem;font-weight:400}.content-section-subsection p,.content-section-content-section p,.content-section-card p{margin:1rem 0;font-size:.95rem;line-height:1.6;color:#ffffffd9}.content-section-content-section p{font-size:1.2rem;color:#ffffffe6}.content-section-card p{color:#fffc;margin:0}.content-section-content-section ul{margin:1rem 0;padding-left:1.5rem}.content-section-content-section li{margin:.5rem 0;line-height:1.5}.section-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-top:2rem}.section-link-item{background:#ffffff0d;border-radius:15px;padding:2rem;border:1px solid rgba(255,255,255,.1);transition:all .3s ease}.section-link-item:hover{transform:translateY(-5px);background:#ffffff14;border-color:#fff3}.content-page{padding-top:5rem;min-height:100vh;display:flex;justify-content:center;align-items:flex-start}.endgame-example{margin-top:2rem}.endgame-example h2{color:#667eea;margin-bottom:1rem;font-size:1.8rem;font-weight:400}.position-info{margin-top:2rem;padding:1.5rem;background:#ffffff0d;border-radius:10px;border:1px solid rgba(255,255,255,.1);text-align:left;max-width:500px;margin-left:auto;margin-right:auto}.position-info h3{color:#764ba2;margin-bottom:1rem;font-size:1.3rem}.position-info p{margin:.5rem 0;font-size:.95rem;line-height:1.5}.position-info strong{color:#fffffff2;font-weight:600}.content-page-home{min-height:calc(100vh - 4rem);align-items:center}.content-page-wrapper{max-width:800px;width:100%;padding:2rem;text-align:center}.content-page-home .content-page-wrapper{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:3rem 2rem;border-radius:20px;box-shadow:0 20px 40px #0000001a;width:90%;text-align:left}.content-page h1{color:#667eea;margin-bottom:1.5rem;font-size:2.5rem;font-weight:300;letter-spacing:1px}.content-page-home h1{font-size:3.5rem;margin:0 0 1rem;font-weight:300;letter-spacing:2px;text-align:center;color:#fff}.content-page-description{font-size:1.1rem;line-height:1.6;margin-bottom:2rem;color:#ffffffe6;max-width:600px;margin-left:auto;margin-right:auto}.content-page-home .content-page-description{font-size:1.3rem;text-align:center;margin-bottom:2rem;line-height:1.6;color:#ffffffe6;max-width:none;margin-left:0;margin-right:0}.content-card-sections{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-top:3rem}.content-card-item{background:#ffffff0d;border-radius:15px;padding:2rem;border:1px solid rgba(255,255,255,.1);transition:all .3s ease;text-align:left}.content-card-item:hover{transform:translateY(-5px);background:#ffffff14;border-color:#fff3}.content-card-item h2{margin-bottom:1rem;font-size:1.4rem;font-weight:400}.content-card-item p{font-size:.95rem;line-height:1.6;color:#fffc;margin:0}.section-link{color:#667eea;text-decoration:none;transition:color .3s ease}.section-link:hover{color:#764ba2;text-decoration:underline}.content-page-wrapper a{color:#87ceeb;text-decoration:none;border-bottom:1px solid transparent;transition:border-bottom-color .3s ease}.content-page-wrapper a:hover{border-bottom-color:#87ceeb}.content-page-home .content-page-wrapper a{color:#87ceeb;text-decoration:none;border-bottom:1px solid transparent;transition:border-bottom-color .3s ease}.content-page-home .content-page-wrapper a:hover{border-bottom-color:#87ceeb}@media (max-width: 768px){.content-page{padding-top:4rem}.content-page-wrapper{padding:1rem}.content-page-home .content-page-wrapper{padding:2rem 1rem;margin:1rem}.content-page h1{font-size:2rem}.content-page-home h1{font-size:2.5rem}.content-page-description{font-size:1rem}.content-card-sections{grid-template-columns:1fr;gap:1.5rem;margin-top:2rem}.content-card-item{padding:1.5rem}}.chessboard-container{display:flex;justify-content:center;align-items:center;padding:2rem}.chessboard{max-width:400px;max-height:400px;width:100%;height:auto;border:3px solid #8b4513;box-shadow:0 4px 20px #0000004d;border-radius:4px;display:block}.chessboard-error{padding:2rem;text-align:center;color:#c62828;background:#c628281a;border:1px solid #c62828;border-radius:4px}@media (max-width: 768px){.chessboard-container{padding:1rem}.chessboard{max-width:320px;max-height:320px}}@media (max-width: 480px){.chessboard{max-width:280px;max-height:280px}}#root{width:100%;min-height:100vh}.App,.main-content{min-height:100vh;width:100%}