:root{
  --bg:#f6f7f9; --paper:#ffffff; --ink:#1d2733; --ink-2:#55606d; --ink-3:#7a8591; --rule:#d9dee4; --rule-soft:#e9edf1;
  --blue:#1f4e79; --blue-2:#2a6aa3; --blue-tint:#e8eff6; --navy:#16324f; --green:#1e6b45; --green-tint:#e7f4ec;
  --amber:#7a4b00; --amber-tint:#fff6e5; --red:#b42318; --red-tint:#fdecea; --code:#f1f3f6;
  --shadow:0 1px 2px rgba(16,24,40,.06),0 6px 18px rgba(16,24,40,.06);
  --font:"Archivo",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0f141a; --paper:#151b22; --ink:#e6ebf0; --ink-2:#a9b3be; --ink-3:#7e8995; --rule:#2a333d; --rule-soft:#222a33;
    --blue:#8cb8e6; --blue-2:#a9cbf0; --blue-tint:#1b2a3a; --navy:#cfe0f2; --green:#7fd1a3; --green-tint:#16291f;
    --amber:#f2c477; --amber-tint:#2a2214; --red:#f29b92; --red-tint:#2c1816; --code:#1d252e; --shadow:none; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0f141a; --paper:#151b22; --ink:#e6ebf0; --ink-2:#a9b3be; --ink-3:#7e8995; --rule:#2a333d; --rule-soft:#222a33;
  --blue:#8cb8e6; --blue-2:#a9cbf0; --blue-tint:#1b2a3a; --navy:#cfe0f2; --green:#7fd1a3; --green-tint:#16291f;
  --amber:#f2c477; --amber-tint:#2a2214; --red:#f29b92; --red-tint:#2c1816; --code:#1d252e; --shadow:none; color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-padding-top:76px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-text-size-adjust:100%}
a{color:var(--blue);text-underline-offset:2px}
a:hover{color:var(--blue-2)}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:3px}
img{max-width:100%;height:auto}
code{font-family:ui-monospace,Consolas,"Courier New",monospace;font-size:.88em;background:var(--code);border:1px solid var(--rule-soft);border-radius:4px;padding:.05em .35em}
.skip{position:absolute;left:-999px;top:8px;background:var(--paper);padding:8px 12px;z-index:100}
.skip:focus{left:8px}

/* top bar */
.top{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:14px;height:60px;padding:0 20px;background:var(--paper);border-bottom:1px solid var(--rule)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);min-width:0}
.brand img{height:20px;width:auto;flex:none}
.brand span{font-weight:600;font-stretch:88%;font-size:15px;color:var(--ink-2);white-space:nowrap;padding-left:12px;border-left:1px solid var(--rule)}
:root[data-theme="dark"] .brand img{filter:brightness(0) invert(.92)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .brand img{filter:brightness(0) invert(.92)}}
.search{position:relative;margin-left:auto;width:min(340px,40vw)}
.search input{width:100%;height:38px;border:1px solid var(--rule);border-radius:8px;background:var(--bg);color:var(--ink);padding:0 12px;font:inherit;font-size:14px}
.results{position:absolute;right:0;top:44px;width:min(460px,92vw);max-height:70vh;overflow:auto;background:var(--paper);border:1px solid var(--rule);border-radius:10px;box-shadow:0 12px 32px rgba(0,0,0,.18);padding:6px}
.results a{display:block;padding:9px 10px;border-radius:7px;text-decoration:none;color:var(--ink)}
.results a:hover,.results a.on{background:var(--blue-tint)}
.results b{display:block;font-weight:600;font-size:14px}
.results small{display:block;color:var(--ink-3);font-size:12px}
.results span{display:block;color:var(--ink-2);font-size:13px;line-height:1.45;margin-top:2px}
.results mark{background:#ffe58f;color:inherit;border-radius:2px}
.results .none{padding:12px;color:var(--ink-2);font-size:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;height:38px;padding:0 16px;border-radius:8px;border:1px solid var(--rule);background:var(--paper);color:var(--ink);font:inherit;font-weight:600;font-size:14px;text-decoration:none;cursor:pointer;white-space:nowrap}
.btn:hover{border-color:var(--ink-3);color:var(--ink)}
.btn.primary{background:var(--blue);border-color:var(--blue);color:#fff}
:root[data-theme="dark"] .btn.primary{color:#0f141a}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .btn.primary{color:#0f141a}}
.btn.primary:hover{background:var(--blue-2);border-color:var(--blue-2);color:#fff}
.theme,.menubtn{width:38px;height:38px;border:1px solid var(--rule);border-radius:8px;background:var(--paper);color:var(--ink);font-size:17px;cursor:pointer;flex:none;display:inline-flex;align-items:center;justify-content:center;padding:0}
.theme svg{width:18px;height:18px}
.menubtn{display:none}
@media (max-width:860px){.menubtn{display:inline-flex}}

/* layout */
.layout{display:grid;grid-template-columns:260px minmax(0,1fr) 220px;max-width:1440px;margin:0 auto}
.side{position:sticky;top:60px;height:calc(100vh - 60px);overflow-y:auto;padding:22px 14px 30px 20px;border-right:1px solid var(--rule)}
.navgroup h4{margin:18px 0 6px;font-size:11.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.navgroup:first-child h4{margin-top:0}
.navgroup ul{list-style:none;margin:0;padding:0}
.navgroup a{display:block;padding:6px 10px;border-radius:7px;color:var(--ink-2);text-decoration:none;font-size:14.5px;line-height:1.35}
.navgroup a:hover{background:var(--rule-soft);color:var(--ink)}
.navgroup a[aria-current]{background:var(--blue-tint);color:var(--blue);font-weight:600}
.ver{margin:22px 10px 0;font-size:12px;color:var(--ink-3)}
main{min-width:0;padding:34px 48px 40px}
article{max-width:860px}
.toc{position:sticky;top:60px;align-self:start;max-height:calc(100vh - 60px);overflow:auto;padding:34px 20px 20px 0}
.toc h4{margin:0 0 8px;font-size:11.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.toc ul{list-style:none;margin:0;padding:0 0 0 12px;border-left:1px solid var(--rule)}
.toc a{display:block;padding:3px 0;color:var(--ink-2);text-decoration:none;font-size:13.5px;line-height:1.4}
.toc a:hover,.toc a.on{color:var(--blue)}

/* content */
.crumb{margin:0 0 4px;font-size:13px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--green)}
h1{margin:0 0 10px;font-size:clamp(28px,4vw,38px);line-height:1.15;font-weight:700;font-stretch:88%;letter-spacing:-.01em;color:var(--navy)}
.lede{margin:0 0 26px;font-size:18.5px;color:var(--ink-2);max-width:62ch}
h2{margin:44px 0 12px;font-size:24px;line-height:1.25;font-weight:650;font-stretch:90%;color:var(--navy);padding-top:6px}
h3{margin:28px 0 8px;font-size:18px;font-weight:650;color:var(--navy)}
p,ul,ol{margin:0 0 14px}
li{margin:4px 0}
.ticks{list-style:none;padding:0}
.ticks li{position:relative;padding-left:28px;margin:10px 0}
.ticks li::before{content:"";position:absolute;left:2px;top:.45em;width:14px;height:8px;border-left:2.5px solid var(--green);border-bottom:2.5px solid var(--green);transform:rotate(-45deg)}
.steps{counter-reset:s;list-style:none;padding:0}
.steps li{counter-increment:s;position:relative;padding:2px 0 2px 42px;margin:12px 0}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:50%;background:var(--blue-tint);color:var(--blue);font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center}
.up{color:var(--red);font-weight:600}.down{color:var(--green);font-weight:600}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin:-6px 0 24px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin:8px 0 10px}
.card{display:flex;flex-direction:column;gap:6px;padding:16px 18px;background:var(--paper);border:1px solid var(--rule);border-radius:12px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow)}
.card:hover{border-color:var(--blue);color:var(--ink)}
.card b{color:var(--blue);font-size:16px}
.card span{color:var(--ink-2);font-size:14.5px;line-height:1.5}
table.grid{width:100%;border-collapse:collapse;margin:8px 0 18px;font-size:15px;background:var(--paper);border:1px solid var(--rule);border-radius:10px;overflow:hidden;display:block;overflow-x:auto}
table.grid thead,table.grid tbody{display:table;width:100%;border-collapse:collapse}
table.grid th,table.grid td{text-align:left;vertical-align:top;padding:10px 14px;border-bottom:1px solid var(--rule-soft)}
table.grid thead th{background:var(--bg);font-size:13px;font-weight:600;color:var(--ink-2)}
table.grid tbody th{width:32%;font-weight:600;color:var(--ink)}
table.grid tr:last-child>*{border-bottom:0}
.callout{display:flex;gap:12px;margin:18px 0;padding:13px 16px;border-radius:10px;border:1px solid;font-size:15px}
.callout>b{flex:none;font-size:13px;letter-spacing:.03em;text-transform:uppercase;padding-top:1px}
.callout>div>*:last-child{margin-bottom:0}
.callout.tip{background:var(--green-tint);border-color:color-mix(in srgb,var(--green) 30%,transparent)}.callout.tip>b{color:var(--green)}
.callout.note{background:var(--blue-tint);border-color:color-mix(in srgb,var(--blue) 25%,transparent)}.callout.note>b{color:var(--blue)}
.callout.warn{background:var(--red-tint);border-color:color-mix(in srgb,var(--red) 25%,transparent)}.callout.warn>b{color:var(--red)}
.callout.demo{background:var(--amber-tint);border-color:color-mix(in srgb,var(--amber) 30%,transparent)}.callout.demo>b{color:var(--amber)}

/* screenshots */
figure.shot{margin:18px 0 24px}
figure.shot a{display:block;border:1px solid var(--rule);border-radius:10px;overflow:hidden;background:#fff;box-shadow:var(--shadow);cursor:zoom-in}
figure.shot img{display:block;width:100%}
figure.shot.narrow{max-width:420px}
figcaption{margin-top:8px;font-size:14px;color:var(--ink-3)}
dialog#lightbox{max-width:96vw;max-height:94vh;padding:0;border:0;border-radius:10px;background:var(--paper);color:var(--ink);overflow:auto}
dialog#lightbox::backdrop{background:rgba(10,14,20,.78)}
dialog#lightbox img{display:block;max-width:none;width:auto;max-height:calc(94vh - 48px)}
dialog#lightbox p{margin:0;padding:10px 14px;font-size:14px;color:var(--ink-2)}
dialog#lightbox .close{position:sticky;float:right;top:8px;margin:8px 8px -46px 0;width:38px;height:38px;border-radius:50%;border:0;background:rgba(0,0,0,.6);color:#fff;font-size:22px;cursor:pointer;z-index:2}

.pager{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:48px 0 10px}
.pager a{display:block;padding:14px 16px;border:1px solid var(--rule);border-radius:10px;text-decoration:none;color:var(--blue);font-weight:600;background:var(--paper)}
.pager a:hover{border-color:var(--blue)}
.pager small{display:block;font-weight:400;font-size:12.5px;color:var(--ink-3)}
.pager .next{text-align:right}
.foot{max-width:860px;margin-top:30px;padding-top:18px;border-top:1px solid var(--rule);font-size:13px;color:var(--ink-3)}

@media (max-width:1180px){.layout{grid-template-columns:240px minmax(0,1fr)}.toc{display:none}}
@media (max-width:860px){
  .top{padding:0 12px;gap:8px}
  .brand span{display:none}
  .demo{display:none}
  .search{width:auto;flex:1;margin-left:4px}
  .layout{grid-template-columns:minmax(0,1fr)}
  .side{position:fixed;left:0;top:60px;bottom:0;width:min(300px,86vw);height:auto;background:var(--paper);z-index:25;transform:translateX(-102%);transition:transform .2s;box-shadow:8px 0 30px rgba(0,0,0,.15)}
  body.navopen .side{transform:none}
  main{padding:24px 16px 32px}
  .lede{font-size:17px}
  table.grid tbody th{width:auto}
  .pager{grid-template-columns:1fr}
  .pager .next{text-align:left}
}
@media print{.top,.side,.toc,.pager{display:none}.layout{display:block}main{padding:0}figure.shot a{box-shadow:none}}