:root{
  --bg:#f5f6f7; --fg:#12171c; --muted:#5b6670; --line:#d9dde1; --panel:#eaecee;
  --accent:#2b4f86; --onaccent:#fff; --link:#2b4f86;
  --term:#0f1419; --termfg:#c9d1d9; --termdim:#7d8791;
  color-scheme:light dark;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0e1114; --fg:#e4e8eb; --muted:#8d98a2; --line:#252b31; --panel:#171b20;
    --accent:#7aa2e0; --onaccent:#0e1114; --link:#8fb2ea; --term:#07090b}
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
body{margin:0;background:var(--bg);color:var(--fg);
  padding:env(safe-area-inset-top,0px) 0 env(safe-area-inset-bottom,0px);
  font:400 1rem/1.7 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  -webkit-text-size-adjust:100%}
a{color:var(--link);text-underline-offset:.2em;text-decoration-thickness:1px}
a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.wrap{max-width:62rem;margin:0 auto;padding:0 1.25rem}

/* header */
header.site{border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;flex-wrap:wrap;gap:.4rem 2rem;align-items:center;justify-content:space-between;padding-top:1rem;padding-bottom:1rem}
.brand{font-weight:800;font-size:1.35rem;letter-spacing:.04em;color:var(--fg);text-decoration:none}
header.site nav{display:flex;flex-wrap:wrap;gap:.2rem 1.4rem;font-size:.95rem}
header.site nav a{color:var(--muted);text-decoration:none}
header.site nav a:hover{color:var(--fg)}

/* type */
h1{font-size:clamp(2rem,5vw,2.6rem);line-height:1.1;margin:0 0 1rem;font-weight:750;letter-spacing:-.02em}
h2{font-size:1.25rem;line-height:1.3;margin:2.5rem 0 .6rem;font-weight:700;letter-spacing:-.01em}
h3{font-size:1.02rem;margin:1.75rem 0 .4rem;font-weight:700}
p,li{max-width:68ch}
p{margin:.6rem 0 1rem}
li{margin:.3rem 0}
ul,ol{padding-left:1.3rem}
code{font:.88em ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--panel);padding:.1em .35em;border-radius:3px}
pre{background:var(--term);color:var(--termfg);padding:.9rem 1.1rem;overflow-x:auto;line-height:1.6;border-radius:4px;margin:1rem 0}
pre code{background:none;padding:0;font-size:.88rem;color:inherit}
table{border-collapse:collapse;display:block;overflow-x:auto;margin:1.25rem 0;font-size:.95rem}
th,td{border-bottom:1px solid var(--line);padding:.55rem 1.25rem .55rem 0;text-align:left;vertical-align:top}
th{font-weight:700;border-bottom:2px solid var(--fg)}

/* home */
.hero{padding-top:4rem;padding-bottom:3rem}
.hero h1{font-size:clamp(3rem,10vw,5.5rem);line-height:.95;letter-spacing:-.04em;font-weight:800;margin-bottom:1.25rem}
.lede{font-size:1.2rem;color:var(--muted);max-width:36ch;margin:0 0 1.75rem}
.btn{display:inline-block;background:var(--accent);color:var(--onaccent);padding:.7rem 1.3rem;border-radius:4px;text-decoration:none;font-weight:600}
.btn .todo{background:none;color:inherit;text-decoration:underline dotted;padding:0}
.btn:hover{filter:brightness(1.1)}
.btn:focus-visible{outline:2px solid var(--fg)}
.meta{color:var(--muted);font-size:.93rem;margin:.9rem 0 0}
.boot{background:var(--term);color:var(--termfg);border-radius:4px;padding:1.1rem 0 1rem;margin:0 0 .5rem;
  font:.95rem/1.9 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;overflow-x:auto;white-space:pre}
.boot span{display:block;padding:0 1.25rem}
.boot .sel{background:#c9d1d9;color:#0f1419}
.boot .dim{white-space:normal;color:var(--termdim);font-size:.85rem;margin-top:.9rem;line-height:1.6}
.cap{font-size:.88rem;color:var(--muted);margin:.4rem 0 0}
section.row{display:grid;grid-template-columns:12rem 1fr;gap:0 2rem;border-top:1px solid var(--line);padding:2rem 0}
section.row>h2{margin:0;font-size:1.05rem}
section.row>div>*:first-child{margin-top:0}
section.row>div>*:last-child{margin-bottom:0}
dl{display:grid;grid-template-columns:max-content 1fr;gap:.4rem 1.75rem;margin:0 0 1rem}
dt{font-weight:700} dd{margin:0;color:var(--muted)}
.todo{background:color-mix(in srgb,#e8b400 25%,transparent);padding:0 .2rem;border-radius:2px;color:var(--fg)}
@media (max-width:42rem){
  .hero{padding-top:2.5rem;padding-bottom:2rem}
  section.row{grid-template-columns:1fr;gap:.6rem}
  section.row>h2{margin-bottom:.2rem}
}

/* docs layout */
.docs{display:grid;grid-template-columns:13rem 1fr;gap:0 3rem;padding-top:2.5rem;padding-bottom:3rem}
.docs aside nav{position:sticky;top:1.5rem;display:flex;flex-direction:column;font-size:.95rem}
.docs aside a{color:var(--muted);text-decoration:none;padding:.3rem 0 .3rem .9rem;border-left:2px solid var(--line)}
.docs aside a:hover{color:var(--fg)}
.docs aside a[aria-current]{color:var(--fg);font-weight:600;border-left-color:var(--accent)}
.docs article{min-width:0;max-width:44rem}
.docs article>h1{margin-bottom:1.25rem}
.plain{padding-top:2.5rem;padding-bottom:3rem;max-width:48rem}
@media (max-width:48rem){
  .docs{grid-template-columns:1fr}
  .docs aside nav{position:static;flex-direction:row;flex-wrap:wrap;gap:.2rem 1.1rem;margin-bottom:1.5rem}
  .docs aside a{border-left:0;padding:.2rem 0;border-bottom:2px solid transparent}
  .docs aside a[aria-current]{border-bottom-color:var(--accent)}
}

/* footer */
footer.site{border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}
footer.site .wrap{display:flex;flex-wrap:wrap;gap:.3rem 1.4rem;padding-top:1.25rem;padding-bottom:2.5rem}
footer.site a{color:var(--muted);text-decoration:none}
footer.site a:hover{color:var(--fg);text-decoration:underline}

/* v3 */
header.site{position:sticky;top:0;z-index:10;padding-top:env(safe-area-inset-top,0px);
  background:linear-gradient(180deg,color-mix(in srgb,var(--bg) 40%,#fff 12%),color-mix(in srgb,var(--bg) 55%,transparent));
  -webkit-backdrop-filter:blur(18px) saturate(1.7);backdrop-filter:blur(18px) saturate(1.7);
  border-bottom:1px solid color-mix(in srgb,var(--fg) 14%,transparent);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.28),0 1px 0 rgba(255,255,255,.04)}
.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:2.5rem;align-items:center;padding-top:4.5rem;padding-bottom:3.5rem}
.hero h1{font-size:clamp(3.4rem,10vw,6rem)}
.btn{padding:.85rem 1.5rem;font-size:1.02rem}
.boot{margin:0;padding:1rem 0;white-space:normal;border-radius:6px;font-size:1.05rem;line-height:1;box-shadow:0 14px 40px rgba(0,0,0,.22)}
.boot button{display:flex;justify-content:space-between;align-items:center;width:100%;padding:.9rem 1.25rem;background:none;border:0;color:inherit;font:inherit;text-align:left;cursor:pointer}
.boot button span{padding:0}
.boot button:hover{background:rgba(255,255,255,.07)}
.boot button[aria-checked=true]{background:#c9d1d9;color:#0f1419}
.boot button:focus-visible{outline:2px solid var(--accent);outline-offset:-3px}
.boot i{font-style:normal;font-size:.8rem;opacity:.65}
.docs aside nav{top:5rem}
@media (max-width:48rem){.hero{grid-template-columns:1fr;padding-top:2.5rem}}