:root{--bg:#0A0D1C;--bg-2:#121735;--surface:#161B3A;--border:#262E5C;--text:#E7E9F5;--muted:#A3A9C7;--purple:#A974FF;--blue:#5B8CFF;--yellow:#FFD84D;--radius:14px;--wrap:1120px;--mono:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;color-scheme:dark}*,*::before,*::after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);background-image:radial-gradient(60rem 30rem at 15% -10%,rgba(123,66,188,.35),transparent 70%),radial-gradient(50rem 30rem at 95% 0%,rgba(50,108,229,.28),transparent 70%),linear-gradient(160deg,var(--bg),var(--bg-2));background-repeat:no-repeat;background-attachment:fixed;color:var(--text);font:17px/1.6 system-ui,-apple-system,segoe ui,Roboto,sans-serif}a{color:var(--blue);text-underline-offset:.2em}a:hover{color:var(--purple)}img{max-width:100%;height:auto}code{font-family:var(--mono);font-size:.9em}p code,li code{background:rgba(91,140,255,.12);padding:.1em .35em;border-radius:5px}.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;z-index:10;background:var(--surface);padding:.5em 1em}.site-header{border-bottom:1px solid var(--border)}.nav{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:1rem}.brand{display:flex;align-items:center;gap:.6rem;color:var(--text);text-decoration:none;font-weight:700;letter-spacing:.04em}.nav ul{display:flex;gap:1.25rem;list-style:none;margin:0;padding:0}.nav ul a{color:var(--muted);text-decoration:none}.nav ul a:hover{color:var(--text)}.hero{padding:6rem 16px 4rem;text-align:center}.eyebrow{color:var(--muted);text-transform:uppercase;letter-spacing:.14em;font-size:.8rem;margin:0 0 1rem}h1{font-size:clamp(2.4rem,7vw,4.5rem);line-height:1.05;margin:0 0 1.5rem;letter-spacing:-.02em}.grad{background:linear-gradient(90deg,var(--purple),var(--blue) 55%,var(--yellow));-webkit-background-clip:text;background-clip:text;color:transparent}.lede{max-width:42rem;margin:0 auto;color:var(--muted);font-size:1.2rem}.actions{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center;margin:2rem 0 0}.btn{display:inline-block;padding:.7rem 1.3rem;border:1px solid var(--border);border-radius:999px;color:var(--text);text-decoration:none;font-weight:600;background:rgba(255,255,255,3%)}.btn:hover{border-color:var(--blue);color:var(--text)}.btn-primary{border:0;background:linear-gradient(90deg,var(--purple),var(--blue));color:#fff}.btn-primary:hover{filter:brightness(1.1);color:#fff}.pills{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem;list-style:none;padding:0;margin:2.5rem 0 0}.pills li{font-size:.8rem;color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:.25rem .8rem}.section{padding-top:3rem;padding-bottom:3rem}h2{font-size:clamp(1.6rem,4vw,2.3rem);line-height:1.2;margin:0 0 1rem;letter-spacing:-.01em}h3{font-size:1.15rem;margin:0 0 .5rem}.section-lede{max-width:46rem;color:var(--muted);font-size:1.1rem}.section-lede strong{color:var(--text)}.diagram{margin:2rem 0 0}.diagram img{display:block;width:100%}.features{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:1rem;list-style:none;padding:0;margin:2rem 0 0}.card{background:rgba(22,27,58,.7);border:1px solid var(--border);border-radius:var(--radius);padding:1.4rem}.card p{margin:0;color:var(--muted)}.moves{padding-left:1.25rem}.moves li{margin-bottom:1.5rem}.moves li::marker{color:var(--purple);font-weight:700}.highlight pre{margin:.5rem 0 0;padding:1rem 1.2rem;border:1px solid var(--border);border-radius:var(--radius);overflow-x:auto;font-size:.9rem;line-height:1.5;background:#0f1330!important}.highlight code{background:0 0;padding:0;border-radius:0}.callout{text-align:center;padding:3rem 1.5rem;border-radius:var(--radius);border:1px solid var(--border);background:radial-gradient(30rem 12rem at 50% 0%,rgba(169,116,255,.25),transparent 70%),var(--surface)}.callout p{max-width:40rem;margin-left:auto;margin-right:auto;color:var(--muted)}.notfound{min-height:50vh}.site-footer{border-top:1px solid var(--border);margin-top:3rem;padding:2rem 0;text-align:center}.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:1.5rem;margin:0 0 .75rem;font-weight:600}.fine{color:var(--muted);font-size:.85rem;margin:0}@media(max-width:560px){.hero{padding-top:3.5rem}.nav ul{gap:.9rem;font-size:.95rem}}