/* Site navigation, shared by every page (rendered by nav.js). Self-contained so it looks the same on every layout. */
#site-nav{--sn-bg:#06080B;--sn-panel:#0F141C;--sn-bd:#283342;--sn-t1:#F2F5F8;--sn-t2:#A9B4C2;--sn-t3:#6F7D8E;--sn-ac:#2F80FF;--sn-ach:#4C93FF;
  position:sticky;top:0;z-index:1000;width:100%;background:#06080B;
  border-bottom:1px solid rgba(255,255,255,.05);font:15px/1.4 "Segoe UI Variable Text","Segoe UI",system-ui,sans-serif;color:var(--sn-t1);transition:box-shadow .25s}
#site-nav *{box-sizing:border-box}
#site-nav.scrolled{box-shadow:0 10px 30px rgba(0,0,0,.35)}
/* Skip link (first thing a keyboard user reaches) and screen-reader-only text */
.sn-skip{position:absolute;left:-9999px;top:8px;z-index:1002;background:var(--sn-ac);color:#fff!important;padding:8px 14px;border-radius:8px;font-weight:600}
.sn-skip:focus{left:12px}
.sn-sr{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
main:focus{outline:none}
/* Async page loading (portal/router.js): thin progress bar and a quick cross-fade */
#sc-progress{position:fixed;top:0;left:0;z-index:2000;height:2px;width:0;opacity:0;pointer-events:none;background:linear-gradient(90deg,#2F80FF,#4C93FF);box-shadow:0 0 8px rgba(47,128,255,.6)}
#sc-progress.on{opacity:1;width:80%;transition:width 8s cubic-bezier(.1,.7,.2,1)}
#sc-progress.on.done{width:100%;opacity:0;transition:width .2s ease-out,opacity .3s ease .15s}
#site-nav{view-transition-name:site-nav}
::view-transition-old(root),::view-transition-new(root){animation-duration:.2s;animation-timing-function:ease}
/* The nav holds still while the page under it cross-fades: no fade and no old copy. It's solid (no backdrop blur),
   because transition snapshots can't reproduce a blur and it would turn see-through for a moment. */
::view-transition-group(site-nav),::view-transition-new(site-nav){animation:none}
::view-transition-old(site-nav){display:none}
/* Same page width with or without a scrollbar (the manual and roadmap scroll inside), so the nav never shifts sideways. */
html{scrollbar-gutter:stable}
@media (prefers-reduced-motion:reduce){#sc-progress.on{transition:none}}
#site-nav a,#site-nav a:hover{text-decoration:none}
.sn-logo{color:var(--sn-t1)}
.sn-wrap{max-width:1180px;margin:0 auto;padding:0 24px;height:70px;display:flex;align-items:center;gap:20px}
.sn-logo{display:flex;align-items:center;gap:12px;font-weight:600;font-size:17px;letter-spacing:-.2px;white-space:nowrap}
.sn-logo i{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--sn-ach),var(--sn-ac));box-shadow:0 4px 12px rgba(47,128,255,.3);display:grid;place-items:center;font-style:normal}
.sn-logo small{display:block;font-size:11.5px;color:var(--sn-t3);font-weight:400;margin-top:-2px}
.sn-main{display:flex;align-items:center;gap:4px;list-style:none;margin:0 auto;padding:0}
.sn-main>li,.sn-has{position:relative}
.sn-top{display:inline-flex;align-items:center;gap:6px;padding:8px 13px;border-radius:8px;color:var(--sn-t2);font-family:inherit;font-size:14.5px;font-weight:500;line-height:1.4;background:none;border:0;cursor:pointer;transition:color .15s,background .15s;position:relative;white-space:nowrap}
.sn-top:hover,.sn-has.open>.sn-top{color:var(--sn-t1);background:rgba(255,255,255,.04)}
.sn-top.active{color:var(--sn-t1)}
.sn-top.active::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:var(--sn-ac)}
.sn-top svg{width:12px;height:12px;transition:transform .2s;opacity:.7}
.sn-has.open>.sn-top svg{transform:rotate(180deg)}
.sn-menu{position:absolute;top:calc(100% + 12px);left:50%;min-width:320px;transform:translate(-50%,6px);background:var(--sn-panel);border:1px solid var(--sn-bd);border-radius:14px;padding:8px;box-shadow:0 24px 60px rgba(0,0,0,.55);opacity:0;visibility:hidden;transition:opacity .18s,transform .18s,visibility .18s;z-index:2;text-align:left}
.sn-menu::before{content:"";position:absolute;left:0;right:0;top:-14px;height:14px}
.sn-has:hover>.sn-menu,.sn-has.open>.sn-menu{opacity:1;visibility:visible;transform:translate(-50%,0)}
.sn-acct .sn-menu{left:auto;right:0;transform:translate(0,6px);min-width:220px}
.sn-acct:hover>.sn-menu,.sn-acct.open>.sn-menu{transform:none}
.sn-menu a,.sn-menu button{display:block;width:100%;text-align:left;padding:10px 12px;border-radius:9px;background:none;border:0;color:var(--sn-t1);font:inherit;cursor:pointer;transition:background .15s}
.sn-menu b{display:block;font-size:14px;font-weight:600}
.sn-menu span{display:block;color:var(--sn-t3);font-size:12.5px;line-height:1.4;margin-top:1px}
.sn-menu a:hover,.sn-menu button:hover,.sn-menu a:focus-visible{background:rgba(255,255,255,.05);outline:none}
.sn-menu a.active b{color:var(--sn-ach)}
.sn-menu hr{border:0;border-top:1px solid rgba(255,255,255,.06);margin:6px 4px}
.sn-cta{display:flex;align-items:center;gap:10px}
.sn-signin{color:var(--sn-t2);font-size:14.5px;font-weight:500;padding:8px 12px;border-radius:8px;transition:.15s}
.sn-signin:hover{color:var(--sn-t1);background:rgba(255,255,255,.04)}
.sn-btn{display:inline-flex;align-items:center;justify-content:center;padding:9px 18px;border-radius:9px;font-size:14px;font-weight:600;color:#fff!important;background:linear-gradient(180deg,var(--sn-ach),var(--sn-ac));border:1px solid #5C9DFF;box-shadow:0 4px 14px rgba(47,128,255,.25);white-space:nowrap;transition:.15s}
.sn-btn:hover{background:linear-gradient(180deg,#64A2FF,var(--sn-ach))}
.sn-burger{display:none;background:none;border:1px solid rgba(255,255,255,.1);border-radius:9px;color:var(--sn-t1);width:42px;height:40px;cursor:pointer;place-items:center}
.sn-burger svg{width:22px;height:22px}
.sn-mobile{display:none}
@media(max-width:1020px){
  .sn-burger{display:grid}
  .sn-cta{margin-left:auto}
  .sn-cta .sn-signin,.sn-cta .sn-acct{display:none}
  .sn-main{display:none;position:absolute;top:70px;left:0;right:0;height:calc(100vh - 70px);height:calc(100dvh - 70px);flex-direction:column;align-items:stretch;gap:2px;margin:0;padding:16px 20px 32px;background:var(--sn-bg);overflow-y:auto;border-top:1px solid rgba(255,255,255,.05)}
  #site-nav.open .sn-main{display:flex}
  .sn-top{width:100%;justify-content:space-between;padding:14px 12px;font-size:16px}
  .sn-top.active::after{display:none}
  .sn-menu{position:static;transform:none;min-width:0;opacity:1;visibility:visible;display:none;background:none;border:0;box-shadow:none;padding:0 0 8px 8px}
  .sn-menu::before{display:none}
  .sn-has:hover>.sn-menu{transform:none}
  .sn-has.open>.sn-menu{display:block;transform:none}
  .sn-mobile{display:block}
  .sn-mobile .sn-btn{width:100%;margin-top:10px;padding:12px}
  body.sn-menu-open{overflow:hidden}
}
@media(max-width:520px){.sn-join{display:none!important}.sn-logo small{display:none}}