:root{
--bg:#fafafb;
--surface:#ffffff;
--line:#e7e7ea;
--line-2:#dcdce1;
--ink:#1d1d1d;
--ink-2:#3f3f46;
--mut:#6c6c6d;
--mut-2:#8e8e93;
--accent:#e2620c;
--accent-ink:#c2530a;
--accent-soft:#fff4ec;
--accent-line:#f6cdad;
--code-bg:#f5f5f6;
--ok:#0f8a52;
--ok-soft:#eefaf3;
--warn:#a8620a;
--warn-soft:#fff8ec;
--stop:#b42318;
--stop-soft:#fef3f2;
--ff:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
--ff-m:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
--side-w:288px;
--toc-w:256px;
--main-w:768px;
--top-h:64px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--top-h) + 24px);-webkit-text-size-adjust:100%}
body{
margin:0;background:var(--bg);color:var(--ink);
font-family:var(--ff);font-size:16px;line-height:1.625;
-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--accent-ink);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}

.skip{
position:absolute;left:-9999px;top:0;z-index:100;
background:var(--ink);color:#fff;padding:.7rem 1.1rem;border-radius:0 0 8px 0}
.skip:focus{left:0}

/* ------------------------------------------------------------------ topbar */
.top{
position:sticky;top:0;z-index:40;height:var(--top-h);
background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(12px);
border-bottom:1px solid var(--line)}
.top-in{
max-width:1560px;margin:0 auto;height:100%;padding:0 1.5rem;
display:flex;align-items:center;gap:1rem}
.brand{display:flex;align-items:center;gap:.6rem;color:var(--ink);text-decoration:none;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand img{border-radius:7px;flex:0 0 auto}
.brand-text{font-weight:800;font-size:1.02rem;letter-spacing:-.025em;color:var(--ink)}
.brand-text b{color:var(--accent);font-weight:800}
.brand-docs{
margin-left:.42rem;padding:.1rem .38rem;border-radius:5px;
font-size:.68rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;
color:var(--mut);background:var(--code-bg);border:1px solid var(--line);
vertical-align:middle}

.top-actions{margin-left:auto;display:flex;align-items:center;gap:.55rem}
.search-open{
display:flex;align-items:center;gap:.55rem;
height:36px;padding:0 .7rem 0 .8rem;min-width:230px;
background:var(--surface);border:1px solid var(--line-2);border-radius:9px;
color:var(--mut);font-family:var(--ff);font-size:.87rem;cursor:pointer;
transition:border-color .15s ease,box-shadow .15s ease}
.search-open:hover{border-color:#c9c9cf}
.search-open span{flex:1;text-align:left}
.search-open kbd,.search-field kbd{
font-family:var(--ff);font-size:.7rem;color:var(--mut-2);
background:var(--bg);border:1px solid var(--line);border-radius:5px;padding:.12rem .38rem}
.btn-ghost,.btn-solid{
display:inline-flex;align-items:center;gap:.35rem;height:36px;padding:0 .9rem;
border-radius:9px;font-size:.87rem;font-weight:600;white-space:nowrap;text-decoration:none}
.btn-ghost{color:var(--ink-2);border:1px solid var(--line-2);background:var(--surface)}
.btn-ghost:hover{border-color:#c9c9cf;text-decoration:none}
.btn-solid{background:var(--accent);color:#fff;border:1px solid var(--accent)}
.btn-solid:hover{background:var(--accent-ink);text-decoration:none}
.btn-solid i{font-size:.78rem}
.nav-toggle{
display:none;width:36px;height:36px;border-radius:9px;
background:var(--surface);border:1px solid var(--line-2);color:var(--ink);
font-size:1.1rem;cursor:pointer}

/* ------------------------------------------------------------------ layout */
.shell{
max-width:1560px;margin:0 auto;padding:0 1.5rem;
display:grid;grid-template-columns:var(--side-w) minmax(0,1fr) var(--toc-w);
gap:2.5rem;align-items:start}

.side{
position:sticky;top:var(--top-h);align-self:start;
max-height:calc(100vh - var(--top-h));overflow-y:auto;
padding:1.8rem .4rem 2rem 0;scrollbar-width:thin}
.side::-webkit-scrollbar{width:6px}
.side::-webkit-scrollbar-thumb{background:#dcdce1;border-radius:99px}
.side-group{margin-bottom:1.5rem}
.side-label{
margin:0 0 .5rem .75rem;font-size:.7rem;font-weight:700;
letter-spacing:.07em;text-transform:uppercase;color:var(--mut-2)}
.side ul{list-style:none;margin:0;padding:0}
.side li{margin:1px 0}
.side li a{
display:flex;align-items:center;gap:.6rem;
padding:.4rem .75rem;border-radius:7px;
color:var(--ink-2);font-size:.885rem;font-weight:500;line-height:1.4;
border-left:2px solid transparent;margin-left:-2px;
transition:background .13s ease,color .13s ease}
.side li a i{font-size:.9rem;color:var(--mut-2);flex:0 0 auto;transition:color .13s ease}
.side li a:hover{background:#f1f1f3;color:var(--ink);text-decoration:none}
.side li a.on{
color:var(--accent-ink);font-weight:600;
background:var(--accent-soft);border-left-color:var(--accent)}
.side li a.on i{color:var(--accent)}
.side-foot{
margin-top:1.6rem;padding:.9rem .75rem;border-top:1px solid var(--line);
display:grid;gap:.3rem}
.side-foot a{display:inline-flex;align-items:center;gap:.4rem;font-size:.82rem;font-weight:600}
.side-foot span{font-size:.76rem;color:var(--mut-2)}
.side-foot code{
font-family:var(--ff-m);font-size:.72rem;background:var(--code-bg);
border:1px solid var(--line);border-radius:4px;padding:.05rem .25rem}

main{min-width:0;padding:2.4rem 0 4rem}
.doc{max-width:var(--main-w)}

.toc{
position:sticky;top:var(--top-h);align-self:start;
max-height:calc(100vh - var(--top-h));overflow-y:auto;
padding:2.6rem 0 2rem;scrollbar-width:thin}
.toc-label{
display:flex;align-items:center;gap:.4rem;margin:0 0 .7rem;
font-size:.7rem;font-weight:700;letter-spacing:.07em;
text-transform:uppercase;color:var(--mut-2)}
.toc ul{list-style:none;margin:0 0 1.8rem;padding:0;border-left:1px solid var(--line)}
.toc li a{
display:block;padding:.32rem 0 .32rem .85rem;margin-left:-1px;
border-left:2px solid transparent;
color:var(--mut);font-size:.84rem;line-height:1.45;
transition:color .13s ease,border-color .13s ease}
.toc li a:hover{color:var(--ink);text-decoration:none}
.toc li a.on{color:var(--accent-ink);border-left-color:var(--accent);font-weight:600}
.toc-cta{
background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:1rem 1.1rem}
.toc-cta b{display:block;font-size:.9rem;margin-bottom:.3rem}
.toc-cta p{margin:0 0 .75rem;font-size:.82rem;color:var(--mut);line-height:1.55}
.toc-cta a{display:inline-flex;align-items:center;gap:.35rem;font-size:.84rem;font-weight:600}
.toc-cta i{font-size:.75rem}

/* ---------------------------------------------------------------- typography */
.crumb{
margin:0 0 .55rem;font-size:.76rem;font-weight:600;
letter-spacing:.02em;color:var(--accent-ink)}
.doc h1{
display:flex;align-items:center;gap:.75rem;
margin:0 0 .85rem;font-size:2.25rem;font-weight:700;
letter-spacing:-.033em;line-height:1.15}
.h1-ico{
width:40px;height:40px;flex:0 0 40px;border-radius:11px;
display:grid;place-items:center;font-size:1.15rem;
background:var(--accent-soft);color:var(--accent);border:1px solid var(--accent-line)}
.lede{
margin:0 0 2rem;font-size:1.125rem;line-height:1.62;color:var(--mut);
max-width:62ch}
.doc h2{
margin:2.9rem 0 1rem;font-size:1.5rem;font-weight:650;
letter-spacing:-.021em;line-height:1.3;scroll-margin-top:calc(var(--top-h) + 20px)}
.doc h2:first-of-type{margin-top:2.2rem}
.doc h3{
margin:2rem 0 .7rem;font-size:1.11rem;font-weight:650;
letter-spacing:-.012em;scroll-margin-top:calc(var(--top-h) + 20px)}
.doc p{margin:0 0 1.15rem;max-width:70ch}
.doc ul,.doc ol{margin:0 0 1.25rem;padding-left:1.4rem;max-width:70ch}
.doc li{margin-bottom:.5rem;padding-left:.15rem}
.doc li::marker{color:var(--mut-2)}
.doc strong{font-weight:650;color:var(--ink)}
.doc hr{border:0;border-top:1px solid var(--line);margin:2.5rem 0}

.doc :not(pre)>code{
font-family:var(--ff-m);font-size:.86em;
background:var(--code-bg);border:1px solid var(--line);
border-radius:5px;padding:.1em .34em;color:#b4400d;
word-break:break-word}
.doc pre{
margin:0 0 1.4rem;padding:1rem 1.15rem;overflow-x:auto;
background:var(--code-bg);border:1px solid var(--line);border-radius:12px;
font-family:var(--ff-m);font-size:.855rem;line-height:1.65;color:#2b2b30}
.doc pre code{background:none;border:0;padding:0;color:inherit;font-size:inherit}

.tw{overflow-x:auto;margin:0 0 1.5rem;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.doc table{width:100%;border-collapse:collapse;font-size:.9rem;min-width:480px}
.doc th,.doc td{padding:.72rem .95rem;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.doc th{
font-size:.74rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;
color:var(--mut);background:#fbfbfc;white-space:nowrap}
.doc tbody tr:last-child td{border-bottom:0}
.doc td code{white-space:nowrap}

/* ------------------------------------------------------------------ blocks */
.note{
display:flex;gap:.8rem;margin:0 0 1.5rem;padding:.95rem 1.1rem;
border-radius:11px;font-size:.92rem;line-height:1.62;
background:var(--accent-soft);border:1px solid var(--accent-line);color:#7a3c08}
.note::before{
content:"\f431";font-family:bootstrap-icons;font-size:1rem;
flex:0 0 auto;line-height:1.5;color:var(--accent)}
.note.ok{background:var(--ok-soft);border-color:#bfe7d2;color:#0b5c38}
.note.ok::before{content:"\f26a";color:var(--ok)}
.note.warn{background:var(--warn-soft);border-color:#f2d9a8;color:#7a4708}
.note.warn::before{content:"\f33a";color:var(--warn)}
.note.stop{background:var(--stop-soft);border-color:#fbc9c4;color:#8a1c14}
.note.stop::before{content:"\f622";color:var(--stop)}
.note p{margin:0 0 .5rem;max-width:none}
.note p:last-child{margin:0}
.note b{color:inherit}

.steps{list-style:none;counter-reset:st;padding:0;margin:0 0 1.6rem;max-width:70ch}
.steps li{
counter-increment:st;position:relative;padding-left:2.5rem;margin-bottom:1.1rem}
.steps li::before{
content:counter(st);position:absolute;left:0;top:-.05rem;
width:1.65rem;height:1.65rem;border-radius:50%;
display:grid;place-items:center;
font-family:var(--ff-m);font-size:.78rem;font-weight:500;
background:var(--accent-soft);color:var(--accent-ink);border:1px solid var(--accent-line)}
.steps li b{display:block;margin-bottom:.15rem;font-weight:650}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:.85rem;margin:0 0 1.6rem}
.cards a,.cards div{
display:block;padding:1rem 1.1rem;border-radius:12px;
background:var(--surface);border:1px solid var(--line);
color:var(--ink);text-decoration:none;
transition:border-color .15s ease,box-shadow .15s ease,transform .15s ease}
.cards a:hover{border-color:var(--accent-line);box-shadow:0 2px 10px rgba(0,0,0,.05);text-decoration:none;transform:translateY(-1px)}
.cards i{font-size:1.05rem;color:var(--accent);display:block;margin-bottom:.55rem}
.cards b{display:block;font-size:.94rem;margin-bottom:.2rem}
.cards span{display:block;font-size:.845rem;color:var(--mut);line-height:1.55}

.keyval{
margin:0 0 1.6rem;border:1px solid var(--line);border-radius:12px;
background:var(--surface);overflow:hidden}
.keyval div{
display:flex;gap:1rem;padding:.7rem 1.05rem;border-bottom:1px solid var(--line);
font-size:.9rem}
.keyval div:last-child{border-bottom:0}
.keyval dt,.keyval span:first-child{flex:0 0 42%;color:var(--mut);font-weight:500}
.keyval b,.keyval span:last-child{font-weight:600;text-align:right;margin-left:auto}

a.x-out{display:inline-flex;align-items:center;gap:.22rem}
a.x-out i{font-size:.68em;opacity:.75}

/* --------------------------------------------------------------------- q&a */
.qa{margin:0 0 2rem;border:1px solid var(--line);border-radius:12px;background:var(--surface);overflow:hidden}
.qa details{border-bottom:1px solid var(--line)}
.qa details:last-child{border-bottom:0}
.qa summary{
padding:.9rem 1.15rem;cursor:pointer;font-weight:600;font-size:.94rem;
list-style:none;display:flex;align-items:center;gap:.6rem;
transition:background .13s ease}
.qa summary::-webkit-details-marker{display:none}
.qa summary::before{
content:"\f282";font-family:bootstrap-icons;font-size:.7rem;color:var(--mut-2);
transition:transform .18s ease;flex:0 0 auto}
.qa details[open] summary::before{transform:rotate(90deg)}
.qa summary:hover{background:#fbfbfc}
.qa details>div{padding:0 1.15rem 1.05rem 2.35rem;font-size:.92rem;color:var(--ink-2)}
.qa details>div p:last-child{margin-bottom:0}

/* ------------------------------------------------------------------- pager */
.pager{
display:grid;grid-template-columns:1fr 1fr;gap:.85rem;
margin-top:3.5rem;padding-top:2rem;border-top:1px solid var(--line)}
.pager a{
display:block;padding:.9rem 1.1rem;border-radius:12px;
background:var(--surface);border:1px solid var(--line);
color:var(--ink);text-decoration:none;
transition:border-color .15s ease,box-shadow .15s ease}
.pager a:hover{border-color:var(--accent-line);box-shadow:0 2px 10px rgba(0,0,0,.05);text-decoration:none}
.pager span{
display:flex;align-items:center;gap:.35rem;
font-size:.76rem;font-weight:600;color:var(--mut-2);margin-bottom:.25rem}
.pager b{display:block;font-size:.93rem;font-weight:600;line-height:1.4}
.pager-next{text-align:right}
.pager-next span{justify-content:flex-end}

/* ------------------------------------------------------------------ search */
.search-modal{
position:fixed;inset:0;z-index:60;
background:rgba(24,24,27,.45);backdrop-filter:blur(3px);
display:flex;align-items:flex-start;justify-content:center;padding:12vh 1.25rem 2rem}
.search-modal[hidden]{display:none}
.search-box{
width:100%;max-width:620px;background:var(--surface);
border:1px solid var(--line-2);border-radius:14px;overflow:hidden;
box-shadow:0 20px 50px rgba(0,0,0,.22)}
.search-field{display:flex;align-items:center;gap:.7rem;padding:.9rem 1.1rem;border-bottom:1px solid var(--line)}
.search-field i{color:var(--mut-2)}
.search-field input{
flex:1;border:0;outline:0;font-family:var(--ff);font-size:1rem;color:var(--ink);background:none}
.search-field button{background:none;border:0;cursor:pointer;padding:0}
.search-results{max-height:56vh;overflow-y:auto;padding:.4rem}
.search-results a{
display:block;padding:.65rem .8rem;border-radius:9px;color:var(--ink);text-decoration:none}
.search-results a:hover,.search-results a.on{background:var(--accent-soft);text-decoration:none}
.search-results b{display:block;font-size:.92rem;font-weight:600}
.search-results small{display:block;font-size:.79rem;color:var(--mut);margin-top:.1rem;line-height:1.5}
.search-results mark{background:#ffe9d5;color:inherit;border-radius:2px;padding:0 .1em}
.search-empty{padding:1.6rem;text-align:center;color:var(--mut);font-size:.9rem}
.search-hint{padding:.5rem .8rem .7rem;font-size:.76rem;color:var(--mut-2);border-top:1px solid var(--line)}

/* ------------------------------------------------------------------ footer */
.foot{border-top:1px solid var(--line);background:var(--surface);margin-top:2rem}
.foot-in{
max-width:1560px;margin:0 auto;padding:1.4rem 1.5rem;
display:flex;flex-wrap:wrap;gap:.8rem 1.5rem;align-items:center;
font-size:.83rem;color:var(--mut)}
.foot p{margin:0}
.foot-links{margin-left:auto;display:flex;gap:1.1rem;flex-wrap:wrap}

/* ----------------------------------------------------------------- responsive */
@media (max-width:1200px){
.shell{grid-template-columns:var(--side-w) minmax(0,1fr);gap:2rem}
.toc{display:none}
}
@media (max-width:900px){
.shell{grid-template-columns:minmax(0,1fr);padding:0 1.1rem}
.nav-toggle{display:grid;place-items:center}
.side{
position:fixed;inset:var(--top-h) auto 0 0;width:min(310px,84vw);z-index:35;
background:var(--surface);border-right:1px solid var(--line);
padding:1.3rem 1rem 2rem;max-height:none;
transform:translateX(-100%);transition:transform .22s ease;box-shadow:0 10px 40px rgba(0,0,0,.1)}
.side.open{transform:none}
.top-actions .btn-ghost{display:none}
.search-open{min-width:0;width:36px;padding:0;justify-content:center}
.search-open span,.search-open kbd{display:none}
main{padding:1.8rem 0 3rem}
.doc h1{font-size:1.85rem}
.lede{font-size:1.05rem}
.pager{grid-template-columns:1fr}
.pager-next{text-align:left}
.pager-next span{justify-content:flex-start}
.foot-links{margin-left:0}
}
@media (max-width:520px){
.doc h1{font-size:1.6rem;gap:.6rem}
.h1-ico{width:34px;height:34px;flex:0 0 34px;font-size:1rem}
.doc h2{font-size:1.3rem;margin-top:2.3rem}
.brand-text b{display:none}
}
@media (prefers-reduced-motion:reduce){
html{scroll-behavior:auto}
*{transition-duration:.01ms !important;animation-duration:.01ms !important}
}
@media print{
.top,.side,.toc,.pager,.foot,.search-modal{display:none}
.shell{display:block;padding:0}
body{background:#fff}
}