@font-face{font-family:Poppins;font-weight:400;font-display:swap;src:url(fonts/poppins-400.woff2) format("woff2")}
@font-face{font-family:Poppins;font-weight:500;font-display:swap;src:url(fonts/poppins-500.woff2) format("woff2")}
@font-face{font-family:Poppins;font-weight:600;font-display:swap;src:url(fonts/poppins-600.woff2) format("woff2")}
@font-face{font-family:Poppins;font-weight:700;font-display:swap;src:url(fonts/poppins-700.woff2) format("woff2")}

:root{
  --navy:#21489A; --navy-2:#2F5BB7; --navy-deep:#14306B;
  --sun:#F8B342; --sun-soft:#FFF4DF; --sun-ink:#8A5A00;
  --bg:#F5F7FB; --surface:#FFFFFF; --surface-2:#EEF2FA; --line:#E1E6F0; --line-2:#CDD5E4;
  --ink:#16213A; --ink-2:#47536B; --ink-3:#5D6880;
  --link:var(--navy-2); --accent-ink:var(--navy); --hero-1:#21489A; --hero-2:#3566C9; --hero-ink:#fff;
  --info:#2F5BB7; --info-bg:#EDF2FD; --warn:#B4500F; --warn-bg:#FFF1E6; --tip:#1E7D55; --tip-bg:#E9F7F0;
  --shadow-sm:0 1px 2px rgba(20,40,90,.05);
  --hero-soft:#EEF3FC; --tint-blue:#EAF0FC; --tint-navy:#E3E9F7; --violet:#6A3FB5; --violet-bg:#F3EDFC;
  --shadow-pop:0 14px 32px rgba(33,72,154,.13); --shadow-panel:0 30px 60px rgba(19,43,99,.10);
  --shadow:0 1px 2px rgba(20,40,90,.06),0 6px 20px rgba(20,40,90,.07);
  --shadow-lg:0 20px 50px rgba(15,30,70,.18);
  --hover-line:color-mix(in srgb,var(--navy-2) 35%,var(--line));
  --focus:color-mix(in srgb,var(--navy-2) 70%,transparent);
  /* One scale of corner radii: controls, cards, large cards. */
  --r-sm:10px; --r:12px; --r-lg:16px;
  --ease:.18s cubic-bezier(.2,.7,.3,1);
  --font:Poppins,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0E1424; --surface:#151D31; --surface-2:#1C263D; --line:#26314B; --line-2:#33405E;
  --ink:#E8ECF5; --ink-2:#B3BCD0; --ink-3:#8590A8; --link:#8FB0F5; --accent-ink:#fff;
  --hero-1:#16295A; --hero-2:#21489A; --sun-soft:#3A2E16; --sun-ink:#F8C56A;
  --info:#8FB0F5; --info-bg:#1A2747; --warn:#F5A46B; --warn-bg:#352217; --tip:#6FD2A3; --tip-bg:#14302A;
  --shadow-sm:0 1px 2px rgba(0,0,0,.25);
  --hero-soft:#121B31; --tint-blue:#1A2747; --tint-navy:#1E2A45; --violet:#C4A8F5; --violet-bg:#2A2140;
  --shadow-pop:0 14px 32px rgba(0,0,0,.35); --shadow-panel:0 30px 60px rgba(0,0,0,.35);
  --shadow:0 1px 2px rgba(0,0,0,.3),0 6px 20px rgba(0,0,0,.25); --focus:#8FB0F5; color-scheme:dark;
}}
:root[data-theme="dark"]{
  --bg:#0E1424; --surface:#151D31; --surface-2:#1C263D; --line:#26314B; --line-2:#33405E;
  --ink:#E8ECF5; --ink-2:#B3BCD0; --ink-3:#8590A8; --link:#8FB0F5; --accent-ink:#fff;
  --hero-1:#16295A; --hero-2:#21489A; --sun-soft:#3A2E16; --sun-ink:#F8C56A;
  --info:#8FB0F5; --info-bg:#1A2747; --warn:#F5A46B; --warn-bg:#352217; --tip:#6FD2A3; --tip-bg:#14302A;
  --shadow-sm:0 1px 2px rgba(0,0,0,.25);
  --hero-soft:#121B31; --tint-blue:#1A2747; --tint-navy:#1E2A45; --violet:#C4A8F5; --violet-bg:#2A2140;
  --shadow-pop:0 14px 32px rgba(0,0,0,.35); --shadow-panel:0 30px 60px rgba(0,0,0,.35);
  --shadow:0 1px 2px rgba(0,0,0,.3),0 6px 20px rgba(0,0,0,.25); --focus:#8FB0F5; color-scheme:dark;
}

*{box-sizing:border-box}
html{scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.65 var(--font);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:clip}
a{color:var(--link);text-decoration:none;transition:color var(--ease)}
a:hover{text-decoration:underline;text-underline-offset:3px}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px}
::selection{background:color-mix(in srgb,var(--sun) 35%,transparent)}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{line-height:1.25;margin:0;font-weight:600;letter-spacing:-.01em;text-wrap:balance}
p{text-wrap:pretty}
.i{width:20px;height:20px;flex:none}
kbd{font:500 11px/1 var(--font);border:1px solid var(--line-2);border-bottom-width:2px;border-radius:5px;padding:3px 6px;color:var(--ink-3);background:var(--surface)}
.muted{color:var(--ink-3)}

/* top bar */
.topbar{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
.topbar-in{max-width:1320px;margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);white-space:nowrap;border-radius:var(--r-sm)}
.brand:hover{text-decoration:none}
.logo-mark{width:32px;height:32px;flex:none}
.brand-text{font-size:18px;color:var(--accent-ink);letter-spacing:-.01em}
.brand-text b{font-weight:700}
.brand-sep{width:1px;height:22px;background:var(--line-2)}
.brand-site{font-weight:500;color:var(--ink-2)}
.mainnav{display:flex;gap:2px;min-width:0}
.mainnav a{color:var(--ink-2);font-weight:500;font-size:15px;padding:8px 12px;border-radius:var(--r-sm);white-space:nowrap;transition:background-color var(--ease),color var(--ease)}
.mainnav a:hover{background:var(--surface-2);text-decoration:none;color:var(--ink)}
.mainnav a[aria-current]{color:var(--accent-ink);background:var(--surface-2)}
.tools{margin-left:auto;display:flex;align-items:center;gap:6px;flex:none}
.search-btn{display:flex;align-items:center;gap:10px;min-width:232px;height:40px;padding:0 10px 0 12px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface-2);color:var(--ink-3);font:inherit;font-size:14px;cursor:pointer;transition:border-color var(--ease),background-color var(--ease),box-shadow var(--ease)}
.search-btn span{flex:1;text-align:left}
.search-btn:hover{border-color:var(--line-2);background:var(--surface);box-shadow:var(--shadow-sm)}
.lang,.theme{display:flex;align-items:center;gap:6px;height:40px;padding:0 10px;border-radius:var(--r-sm);border:1px solid transparent;background:none;color:var(--ink-2);font:500 13px var(--font);cursor:pointer;transition:background-color var(--ease),color var(--ease)}
.lang:hover,.theme:hover{background:var(--surface-2);color:var(--ink);text-decoration:none}
.theme .moon{display:none}
:root[data-theme="dark"] .theme .sun{display:none}
:root[data-theme="dark"] .theme .moon{display:block}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .theme .sun{display:none}:root:not([data-theme="light"]) .theme .moon{display:block}}

/* hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(1200px 400px at 85% -10%,rgba(248,179,66,.28),transparent 60%),linear-gradient(135deg,var(--hero-1),var(--hero-2));color:var(--hero-ink)}
.hero-in{position:relative;z-index:1;margin:0 auto}
.hero-tag{display:inline-flex;align-items:center;gap:8px;margin-top:18px!important;padding:6px 14px;border-radius:99px;background:rgba(248,179,66,.2);border:1px solid rgba(248,179,66,.35);font-size:14px;color:#fff}
.hero-tag .i{width:17px;height:17px}
.hero.small .hero-in{padding:44px 24px 52px;max-width:1100px;text-align:left}
.hero.small h1{font-size:clamp(28px,4vw,40px);letter-spacing:-.02em}
.hero.small p{opacity:.9;margin:10px 0 0;max-width:680px;line-height:1.6}
a.hero-tag:hover{background:rgba(248,179,66,.32);text-decoration:none}
.crumbs{font-size:13px;margin-bottom:14px;display:flex;flex-wrap:wrap;gap:4px 6px;align-items:center}
.hero .crumbs a,.hero .crumbs span{color:rgba(255,255,255,.8)}
.hero .crumbs a:hover{color:#fff}
.crumbs span{color:var(--ink-3)}

/* layout pieces */
.wrap{max-width:1100px;margin:0 auto;padding:0 24px}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin:60px 0 18px}
.section-head h2{font-size:22px}
.section-head a{display:inline-flex;align-items:center;gap:6px;font-weight:500;font-size:15px;white-space:nowrap}
.section-head a .i{transition:transform var(--ease)}
.section-head a:hover .i{transform:translateX(3px)}
.section-head .i{width:16px;height:16px}
.section-head+.muted{margin:-6px 0 0;max-width:720px}


.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin:24px 0 8px}
.card{position:relative;display:flex;gap:16px;align-items:flex-start;padding:20px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);color:var(--ink);transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease)}
.card:hover{text-decoration:none;border-color:var(--hover-line);box-shadow:var(--shadow);transform:translateY(-2px)}
.card-icon{display:grid;place-items:center;width:44px;height:44px;flex:none;border-radius:var(--r-sm);background:var(--surface-2);color:var(--link);transition:background-color var(--ease),color var(--ease)}
.card:hover .card-icon{background:var(--sun-soft);color:var(--sun-ink)}
.card-body{display:flex;flex-direction:column;gap:4px;min-width:0}
.card-body b{font-weight:600;font-size:16px;line-height:1.35;overflow-wrap:anywhere;hyphens:auto}
.card-body span{color:var(--ink-2);font-size:14px;line-height:1.55}
.card.soon{padding-right:20px}
.card.soon .card-body{padding-top:2px}
.badge{display:inline-block;vertical-align:middle;font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;padding:3px 8px;border-radius:99px;background:var(--sun-soft);color:var(--sun-ink);white-space:nowrap}
.card .badge{position:absolute;top:14px;right:14px}
.card.soon .card-body b{padding-right:96px}
@media (max-width:640px){.card.soon .card-body b{padding-right:0}.card.soon .card-body{padding-top:26px}}


.ptabs{display:inline-flex;gap:4px;padding:4px;border-radius:var(--r);background:var(--surface-2);border:1px solid var(--line)}
.ptabs a{display:flex;align-items:center;gap:8px;white-space:nowrap;padding:7px 14px;border-radius:8px;font-size:14px;font-weight:500;color:var(--ink-2);transition:background-color var(--ease),color var(--ease)}
.ptabs a:hover{text-decoration:none;color:var(--ink)}
.ptabs a.on{background:var(--surface);color:var(--accent-ink);box-shadow:var(--shadow-sm)}
.ptabs .i{width:17px;height:17px}

/* documentation layout */
.doc{max-width:1320px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:268px minmax(0,1fr) 220px;gap:56px}
.sidebar{position:sticky;top:64px;align-self:start;max-height:calc(100vh - 64px);overflow:auto;padding:28px 6px 28px 0;scrollbar-width:thin;scrollbar-color:var(--line-2) transparent}
.sidebar .ptabs{display:flex;margin-bottom:22px}
.sidebar .ptabs a{flex:1;justify-content:center;padding:7px 6px;font-size:13.5px;gap:6px}
.side-role{margin:0 0 10px;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3)}
.side-details summary{list-style:none;padding:0 10px;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3);margin-bottom:6px;cursor:default}
.side-details summary::-webkit-details-marker{display:none}
.side-details+.side-details{margin-top:22px}
.side-nav{display:flex;flex-direction:column;gap:2px}
.side-nav a{display:flex;align-items:center;gap:11px;padding:8px 10px;border-radius:var(--r-sm);color:var(--ink-2);font-size:14.5px;line-height:1.35;transition:background-color var(--ease),color var(--ease)}
.side-nav a .i{width:18px;height:18px;color:var(--ink-3);transition:color var(--ease)}
.side-nav a:hover{background:var(--surface-2);text-decoration:none;color:var(--ink)}
.side-nav a:hover .i{color:var(--ink-2)}
.side-nav a[aria-current]{background:var(--sun-soft);color:var(--ink);font-weight:500}
.side-nav a[aria-current] .i{color:var(--sun-ink)}
.article{padding:30px 0 72px;min-width:0;max-width:760px}
.article>.crumbs a{color:var(--ink-3)}
.article>.crumbs a:hover{color:var(--link)}
.art-head{display:block;margin:8px 0 32px;padding-bottom:28px;border-bottom:1px solid var(--line)}
.art-icon{display:grid;place-items:center;width:56px;height:56px;flex:none;border-radius:var(--r-lg);background:var(--sun-soft);color:var(--sun-ink)}
.art-icon .i{width:28px;height:28px}
.art-head>div{min-width:0}
.art-head h1{font-size:clamp(26px,3.4vw,36px);font-weight:700;letter-spacing:-.02em;line-height:1.2;overflow-wrap:break-word;hyphens:auto}
.art-head h1 .badge{font-size:11px;margin-left:6px;position:relative;top:-4px}
.art-head .lead{margin:10px 0 0;color:var(--ink-2);font-size:17px;line-height:1.6}
.toc{position:sticky;top:64px;align-self:start;max-height:calc(100vh - 64px);overflow:auto;padding:34px 0;font-size:13.5px;scrollbar-width:thin}
.toc p{margin:0 0 12px;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3)}
.toc nav{display:flex;flex-direction:column;border-left:2px solid var(--line)}
.toc a{color:var(--ink-3);padding:6px 0 6px 14px;margin-left:-2px;border-left:2px solid transparent;line-height:1.4;transition:color var(--ease),border-color var(--ease)}
.toc a:hover{color:var(--ink);text-decoration:none;border-left-color:var(--line-2)}
.toc a.on{color:var(--accent-ink);border-left-color:var(--sun);font-weight:500}

/* "On this page" at the top of a long chapter, where the column on the right is hidden */
.toc-inline{margin:-8px 0 28px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.toc-inline summary{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;cursor:pointer;list-style:none;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3)}
.toc-inline summary::-webkit-details-marker{display:none}
.toc-inline summary::after{content:"+";font-size:18px;font-weight:400}
.toc-inline[open] summary::after{content:"–"}
.toc-inline div{display:flex;flex-direction:column;padding:0 8px 10px}
.toc-inline a{padding:7px 8px;border-radius:8px;font-size:14.5px;line-height:1.4;color:var(--ink-2)}
.toc-inline a:hover{background:var(--surface-2);color:var(--ink);text-decoration:none}
@media (min-width:1181px){.toc-inline{display:none}}

/* prose: the article text. Everything a manual chapter can contain (build.py render_blocks) is styled here. */
.prose{font-size:16.5px;line-height:1.75;color:var(--ink)}
.prose>*:first-child{margin-top:0}
.prose p{margin:0 0 18px}
.prose h2{font-size:24px;line-height:1.3;margin:48px 0 16px;position:relative}
.prose h2:not(:first-child){padding-top:32px;border-top:1px solid var(--line)}
.prose h3{font-size:19px;line-height:1.35;margin:34px 0 10px;position:relative}
.prose h4{font-size:16.5px;line-height:1.4;margin:28px 0 8px;position:relative}
.prose h2+h3,.prose h3+h4{margin-top:18px}
.prose strong.ui{font-weight:600;color:var(--ink);background:var(--surface-2);border:1px solid var(--line);padding:1px 7px;border-radius:6px;font-size:.92em;-webkit-box-decoration-break:clone;box-decoration-break:clone}
@media (max-width:640px){.prose strong.ui{overflow-wrap:anywhere}}
.prose code{font:500 .86em/1.5 var(--mono);color:var(--ink);background:var(--surface-2);border:1px solid var(--line);border-radius:6px;padding:1px 6px;overflow-wrap:anywhere}
.prose strong.ui code{border:0;padding:0;background:none}
.prose a.xref{font-style:normal;font-weight:500;border-bottom:1px solid color-mix(in srgb,var(--link) 35%,transparent);transition:border-color var(--ease)}
.prose a.xref:hover{text-decoration:none;border-bottom-color:var(--link)}
.prose ul.bullets{padding-left:22px;margin:0 0 20px}
.prose ul.bullets li{margin:8px 0;padding-left:4px}
.prose ul.bullets li::marker{color:var(--sun)}
.prose ol.steps,.soon-box ol.steps{list-style:none;counter-reset:s;padding:0;margin:0 0 20px}
.steps li{counter-increment:s;position:relative;padding:2px 0 12px 44px;min-height:34px}
.steps li::before{content:counter(s);position:absolute;left:0;top:1px;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--navy);color:#fff;font-weight:600;font-size:13px;line-height:1}
.steps li:not(:last-child)::after{content:"";position:absolute;left:13.5px;top:34px;bottom:2px;width:1px;background:var(--line-2)}
:root[data-theme="dark"] .steps li::before{background:var(--navy-2)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .steps li::before{background:var(--navy-2)}}

.callout{display:flex;gap:14px;padding:16px 18px;margin:24px 0;border-radius:var(--r);background:var(--info-bg);border:1px solid color-mix(in srgb,var(--info) 22%,transparent);font-size:15.5px;line-height:1.65}
.callout-icon{color:var(--info);padding-top:2px}
.callout-title{font-weight:600;margin:0 0 4px!important;color:var(--ink)}
.callout-title:empty{display:none}
.callout p:last-child,.callout ul:last-child,.callout ol:last-child{margin-bottom:0}
.callout.warning{background:var(--warn-bg);border-color:color-mix(in srgb,var(--warn) 25%,transparent)}
.callout.warning .callout-icon{color:var(--warn)}
.callout.tip{background:var(--tip-bg);border-color:color-mix(in srgb,var(--tip) 25%,transparent)}
.callout.tip .callout-icon{color:var(--tip)}
.callout.note{background:var(--surface-2);border-color:var(--line)}
.callout.note .callout-icon{color:var(--ink-3)}

.table-wrap{overflow-x:auto;margin:22px 0 26px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);box-shadow:var(--shadow-sm)}
table{border-collapse:collapse;width:100%;font-size:14.5px;line-height:1.55}
th{text-align:left;font-weight:600;font-size:13.5px;background:var(--surface-2);color:var(--ink);padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:12px 16px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-2)}
tr:last-child td{border-bottom:0}
td:first-child{color:var(--ink)}

.shot{margin:28px 0 34px}
.zoom{display:block;width:100%;padding:0;border:0;background:none;cursor:zoom-in;border-radius:var(--r)}
.zoom:focus-visible{outline-offset:4px}
.shot .frame{display:block;overflow:hidden;background:var(--surface);border:1px solid var(--line-2);box-shadow:var(--shadow);transition:box-shadow var(--ease),transform var(--ease)}
.zoom:hover .frame{box-shadow:var(--shadow-lg)}
.shot.browser .frame{border-radius:var(--r)}
.shot.browser .dots{display:flex;gap:6px;padding:9px 12px;background:var(--surface-2);border-bottom:1px solid var(--line)}
.shot.browser .dots i{width:10px;height:10px;border-radius:50%;background:var(--line-2)}
.shot.browser .dots i:first-child{background:#F0A39A}.shot.browser .dots i:nth-child(2){background:#F5CF7A}.shot.browser .dots i:nth-child(3){background:#9DD5A8}
.shot.phone .zoom{width:auto;margin:0 auto;border-radius:30px}
.shot.phone .frame{width:min(300px,78vw);margin:0 auto;border-radius:30px;border:8px solid #1B2236;box-shadow:var(--shadow-lg)}
.shot.phone .zoom:hover .frame{transform:translateY(-2px)}
.shot figcaption{text-align:center;font-size:13.5px;line-height:1.5;color:var(--ink-3);margin:12px auto 0;max-width:600px}

.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:56px;padding-top:32px;border-top:1px solid var(--line)}
.pn{display:flex;flex-direction:column;gap:4px;padding:16px 20px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);color:var(--ink);box-shadow:var(--shadow-sm);transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease)}
.pn:hover{text-decoration:none;border-color:var(--hover-line);box-shadow:var(--shadow);transform:translateY(-2px)}
.pn span{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--ink-3)}
.pn span .i{width:15px;height:15px;transition:transform var(--ease)}
.pn.prev:hover span .i{transform:translateX(-3px)}
.pn.next:hover span .i{transform:translateX(3px)}
.pn b{font-weight:600;color:var(--link);line-height:1.4}
.pn.next{text-align:right;align-items:flex-end}
.version{margin-top:24px;font-size:13px;color:var(--ink-3)}

.soon-box{position:relative;padding:30px;border-radius:var(--r-lg);background:var(--surface);border:1px dashed var(--line-2)}
.soon-box h2{font-size:20px;margin-bottom:6px;padding-right:48px}
.soon-box p{color:var(--ink-2);margin:0 0 20px}
.soon-art{position:absolute;top:24px;right:24px;color:var(--sun)}
.soon-art .i{width:34px;height:34px}
.skeleton{margin-top:30px;display:flex;flex-direction:column;gap:12px}
.skeleton i,.skeleton b{display:block;height:12px;border-radius:6px;background:linear-gradient(90deg,var(--surface-2),var(--line),var(--surface-2));background-size:200% 100%;animation:sk 1.6s infinite}
.skeleton i.short{width:62%}
.skeleton b{height:180px;border-radius:var(--r);margin:10px 0}
@keyframes sk{to{background-position:-200% 0}}

/* contact + footer */
.contact{max-width:1100px;margin:80px auto 0;padding:0 24px}
.chapter .contact{max-width:1320px}
.contact-in{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:30px 36px;border-radius:var(--r-lg);background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;box-shadow:var(--shadow)}
.contact h2{font-size:21px}
.contact p{margin:6px 0 0;opacity:.88}
.btn{display:inline-flex;align-items:center;gap:10px;padding:12px 20px;border-radius:var(--r-sm);background:var(--sun);color:#1B2236;font-weight:600;white-space:nowrap;box-shadow:0 2px 8px rgba(10,20,50,.18);transition:filter var(--ease),transform var(--ease),box-shadow var(--ease)}
.btn:hover{text-decoration:none;filter:brightness(1.05);transform:translateY(-1px);box-shadow:0 6px 16px rgba(10,20,50,.24)}
.btn:focus-visible{outline-color:#fff}
.footer{margin-top:56px;border-top:1px solid var(--line);background:var(--surface)}
.footer-in{max-width:1320px;margin:0 auto;padding:24px;display:flex;flex-wrap:wrap;gap:10px 28px;align-items:center;font-size:13.5px;line-height:1.5}
.brand.small .logo-mark{width:24px;height:24px}
.brand.small .brand-text{font-size:15px}
.footer-nav{display:flex;flex-wrap:wrap;gap:4px 18px}
.footer-nav a{color:var(--ink-2);font-weight:500}
.footer-nav a:hover{color:var(--link)}
.footer-site{margin-left:auto;font-weight:500}

/* search */
.search-overlay{position:fixed;inset:0;z-index:50;background:rgba(10,18,40,.5);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);display:flex;justify-content:center;align-items:flex-start;padding:10vh 16px 16px;animation:fade .15s ease-out}
.search-overlay[hidden]{display:none}
.search-panel{width:100%;max-width:680px;max-height:76vh;display:flex;flex-direction:column;border-radius:var(--r-lg);background:var(--surface);box-shadow:var(--shadow-lg);overflow:hidden;border:1px solid var(--line);animation:rise .18s cubic-bezier(.2,.7,.3,1)}
.search-field{display:flex;align-items:center;gap:12px;padding:0 16px 0 18px;border-bottom:1px solid var(--line)}
.search-field .i{color:var(--navy-2)}
.search-field input{flex:1;min-width:0;height:60px;border:0;outline:0;background:none;color:var(--ink);font:inherit;font-size:17px}
.search-field input::placeholder{color:var(--ink-3)}
.search-field input::-webkit-search-cancel-button{display:none}
.esc{display:grid;place-items:center;width:32px;height:32px;padding:0;color:var(--ink-3);background:var(--surface-2);border:1px solid var(--line);border-radius:8px;cursor:pointer;transition:color var(--ease),border-color var(--ease)}
.esc:hover{color:var(--ink);border-color:var(--line-2)}
.search-field .esc .i{width:16px;height:16px;color:inherit}
.search-results{overflow:auto;padding:8px;scrollbar-width:thin}
.search-results:empty{display:none}
.sr{display:block;padding:12px 14px;border-radius:var(--r-sm);color:var(--ink);transition:background-color .12s}
.sr:hover,.sr.on{background:var(--surface-2);text-decoration:none}
.sr.on{box-shadow:inset 3px 0 0 var(--sun)}
.sr-top{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3);min-width:0}
.sr-top .tag{font-weight:600;font-size:11px;letter-spacing:.04em;text-transform:uppercase;padding:2px 7px;border-radius:5px;background:var(--surface);border:1px solid var(--line);white-space:nowrap}
.sr b{display:block;font-weight:600;margin:4px 0 2px;line-height:1.4}
.sr p{margin:0;font-size:14px;line-height:1.55;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sr mark{background:var(--sun-soft);color:inherit;border-radius:3px;padding:0 1px}
.sr-empty{padding:32px;text-align:center;color:var(--ink-3)}
@keyframes fade{from{opacity:0}}
@keyframes rise{from{opacity:0;transform:translateY(8px) scale(.99)}}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:60;background:rgba(8,12,24,.88);display:flex;align-items:center;justify-content:center;padding:32px;cursor:zoom-out;animation:fade .15s ease-out}
.lightbox[hidden]{display:none}
.lightbox figure{margin:0;max-width:100%;max-height:100%;display:flex;flex-direction:column;align-items:center}
.lightbox img{max-width:min(1400px,100%);max-height:calc(100vh - 110px);width:auto;border-radius:var(--r-sm);box-shadow:var(--shadow-lg)}
.lightbox figcaption{color:#fff;opacity:.85;margin-top:14px;font-size:14px;text-align:center}
.lb-close{position:absolute;top:14px;right:18px;width:44px;height:44px;border:0;border-radius:50%;background:rgba(255,255,255,.12);color:#fff;font-size:28px;line-height:1;cursor:pointer;transition:background-color var(--ease)}
.lb-close:hover{background:rgba(255,255,255,.22)}

/* responsive */
@media (max-width:1180px){
  .doc{grid-template-columns:250px minmax(0,1fr);gap:40px}
  .toc{display:none}
  .search-btn{min-width:0}
  .search-btn span,.search-btn kbd{display:none}
}
@media (max-width:1000px){
  .topbar-in{gap:16px}
  .brand-sep,.brand-site{display:none}
  .mainnav a{padding:8px 10px;font-size:14.5px}
}
@media (max-width:960px){
}
@media (max-width:820px){
  .doc{display:block;padding:0 16px}
  .sidebar{position:static;max-height:none;overflow:visible;padding:18px 0 0}
  /* The chapter groups as one list of collapsible rows above the article. */
  .side-details{border:1px solid var(--line);background:var(--surface);padding:10px 12px}
  .side-details:first-of-type{border-radius:var(--r) var(--r) 0 0}
  .side-details:last-of-type{border-radius:0 0 var(--r) var(--r)}
  .side-details:only-of-type{border-radius:var(--r)}
  .side-details summary{cursor:pointer;margin:0;padding:2px 0;display:flex;align-items:center;justify-content:space-between;min-height:28px}
  .side-details summary::after{content:"+";font-size:18px;font-weight:400;color:var(--ink-3)}
  .side-details[open] summary::after{content:"–"}
  .side-details[open] summary{margin-bottom:8px}
  .side-details+.side-details{margin-top:-1px}
  .side-nav a{padding:9px 8px}
  .article{padding-top:22px;max-width:none}
}
@media (max-width:760px){
  .mainnav{display:none}
}
@media (max-width:640px){
  html{scroll-padding-top:76px}
  .topbar-in{padding:0 16px;gap:12px}
  .tools{gap:2px}
  .lang span{display:none}
  .lang,.theme{padding:0 8px}
  .wrap,.contact{padding:0 16px}
  .hero.small .hero-in{padding:30px 16px 38px}
  .section-head{margin:48px 0 14px}
  .section-head h2,.center{font-size:20px}
  .cards{grid-template-columns:1fr;gap:12px}
  .card{padding:16px}
  .art-head{gap:14px;margin-bottom:26px;padding-bottom:22px}
  .art-icon{width:46px;height:46px;border-radius:var(--r)}
  .art-icon .i{width:24px;height:24px}
  .art-head .lead{font-size:16px}
  .prose{font-size:16px;line-height:1.7}
  .prose h2{font-size:21px;margin-top:40px}
  .prose h2:not(:first-child){padding-top:26px}
  .prose h3{font-size:18px}
  .shot{margin:22px 0 28px}
  .callout{padding:14px;gap:12px}
  .prevnext{grid-template-columns:1fr;gap:12px;margin-top:44px;padding-top:24px}
  .contact{margin-top:56px}
  .contact-in{flex-direction:column;align-items:flex-start;padding:24px}
  .footer-in{padding:20px 16px;flex-direction:column;align-items:flex-start;gap:6px}
  .footer-nav{margin:6px 0 4px}
  .footer-site{margin-left:0;margin-top:4px}
  .search-overlay{padding:12px}
  .search-panel{max-height:calc(100vh - 24px)}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
}

@media print{
  .topbar,.sidebar,.toc,.contact,.footer,.prevnext,.search-overlay,.lightbox{display:none!important}
  .doc{display:block}
  body{background:#fff}
  .shot{break-inside:avoid}
}

/* ---------------------------------------------------------------- Concept A template */
.hdr-contact{display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;border-radius:var(--r-sm);color:var(--accent-ink);font-weight:600;font-size:14px;white-space:nowrap;transition:background-color var(--ease)}
.hdr-contact:hover{background:var(--surface-2);text-decoration:none}
.hdr-contact .i{width:18px;height:18px}
.wrap.topics-wrap,.wrap.role-layout{max-width:1240px}
.i.arrow-in{width:16px;height:16px}

/* role colours */
.r-users .ic{background:var(--sun-soft);color:var(--sun-ink)}
.r-om .ic{background:var(--tint-blue);color:var(--info)}
.r-admins .ic{background:var(--tint-navy);color:var(--accent-ink)}

/* home */
.home-hero{background:linear-gradient(180deg,var(--hero-soft),var(--bg))}
.home-in{max-width:1240px;margin:0 auto;padding:56px 24px 64px;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:56px;align-items:center}
.kicker{display:inline-flex;align-items:center;gap:8px;margin:0 0 18px;font-size:12.5px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--sun-ink)}
.kicker .logo-mark{width:20px;height:20px}
.home-main,.role-in>div{min-width:0}
.home-main h1,.role-hero h1{overflow-wrap:break-word;hyphens:auto}
.home-main h1{font-size:clamp(36px,4.6vw,56px);font-weight:700;letter-spacing:-.035em;line-height:1.06;margin:0 0 16px}
.home-main h1 em{font-style:normal;color:var(--accent-ink);background:linear-gradient(transparent 62%,color-mix(in srgb,var(--sun) 45%,transparent) 62%)}
.home-main .sub{font-size:18px;line-height:1.6;color:var(--ink-2);margin:0 0 28px;max-width:540px}
.big-search{display:flex;align-items:center;gap:12px;width:100%;max-width:560px;height:60px;padding:0 16px 0 20px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);color:var(--ink-3);font:inherit;font-size:17px;cursor:text;box-shadow:0 12px 36px rgba(33,72,154,.10);transition:border-color var(--ease),box-shadow var(--ease)}
.big-search span{flex:1;text-align:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.big-search .i{width:22px;height:22px;color:var(--navy-2)}
.big-search:hover{border-color:var(--hover-line);box-shadow:var(--shadow-pop)}
.rlabel{margin:32px 0 12px;font-size:12.5px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--ink-3)}
.roles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;max-width:600px}
.role{display:flex;flex-direction:column;gap:12px;min-height:168px;padding:18px;border-radius:18px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.role:hover{text-decoration:none;border-color:var(--navy-2);box-shadow:var(--shadow-pop);transform:translateY(-3px)}
.role .ic,.orole .ic,.rolepill .ic{display:grid;place-items:center;border-radius:14px}
.role .ic{width:48px;height:48px}
.role .ic .i{width:26px;height:26px}
.role b{font-size:16.5px;font-weight:600;line-height:1.25}
.role small{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:13px;font-weight:500;color:var(--ink-3)}
.role small .i,.orole small .i,.rolepill small .i{width:16px;height:16px;color:var(--accent-ink);transition:transform var(--ease)}
.role:hover small .i{transform:translateX(3px)}
.tasks{border-radius:26px;padding:24px;border:1px solid var(--line);background:linear-gradient(160deg,var(--hero-soft),var(--surface));box-shadow:var(--shadow-panel)}
.tasks h2{margin:0 0 14px;font-size:12.5px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--ink-3)}
.task{display:flex;align-items:center;gap:14px;padding:14px 16px;margin-bottom:10px;border-radius:14px;border:1px solid var(--line);background:var(--surface);color:var(--ink);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.task:last-child{margin-bottom:0}
.task:hover{text-decoration:none;border-color:var(--hover-line);box-shadow:var(--shadow);transform:translateY(-2px)}
.task .ic{display:grid;place-items:center;width:40px;height:40px;flex:none;border-radius:12px;background:var(--surface-2);color:var(--accent-ink);transition:background-color var(--ease),color var(--ease)}
.task:hover .ic{background:var(--sun-soft);color:var(--sun-ink)}
.task .tx{flex:1;min-width:0}
.task b{display:block;font-size:15.5px;font-weight:600;line-height:1.35}
.task small{font-size:12.5px;color:var(--ink-3)}
.task>.i{width:18px;height:18px;color:var(--line-2);transition:color var(--ease),transform var(--ease)}
.task:hover>.i{color:var(--accent-ink);transform:translateX(3px)}
.topics-wrap{padding-top:16px}
.h2{margin:24px 0 6px;font-size:26px;letter-spacing:-.02em}
.lead2{margin:0 0 24px;color:var(--ink-2)}
.topics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.topic{display:flex;flex-direction:column;padding:22px;border-radius:18px;border:1px solid var(--line);background:var(--surface);transition:box-shadow var(--ease),border-color var(--ease)}
.topic:hover{border-color:var(--hover-line);box-shadow:var(--shadow)}
.topic .ic{display:grid;place-items:center;width:44px;height:44px;margin-bottom:14px;border-radius:13px}
.topic h3{margin:0 0 8px;font-size:16.5px}
.topic .links{display:flex;flex-direction:column;flex:1;margin-bottom:14px}
.topic .links a{padding:4px 0;font-size:14px;line-height:1.45;color:var(--ink-2)}
.topic .links a:hover{color:var(--link)}
.topic .links a.more{color:var(--link);font-weight:500}
.topic .who{display:flex;flex-wrap:wrap;gap:6px}
.topic .who span{padding:2px 8px;border-radius:99px;background:var(--surface-2);color:var(--ink-3);font-size:11px;font-weight:600}
.t0 .ic{background:var(--tint-blue);color:var(--info)}
.t1 .ic{background:var(--sun-soft);color:var(--sun-ink)}
.t2 .ic{background:var(--tip-bg);color:var(--tip)}
.t3 .ic{background:var(--violet-bg);color:var(--violet)}

/* role page */
.role-hero{background:linear-gradient(180deg,var(--hero-soft),var(--bg))}
.role-in{max-width:1240px;margin:0 auto;padding:28px 24px 40px;display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:56px;align-items:end}
.badge-role{display:inline-flex;align-items:center;gap:12px;margin:22px 0 14px}
.badge-role .ic{display:grid;place-items:center;width:56px;height:56px;border-radius:16px}
.badge-role .ic .i{width:28px;height:28px}
.badge-role small{display:block;font-size:12px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--ink-3)}
.badge-role b{font-size:15px;font-weight:600;color:var(--ink-2)}
.role-hero h1{margin:0 0 12px;font-size:clamp(32px,4vw,48px);font-weight:700;letter-spacing:-.035em;line-height:1.08}
.role-hero .sub{margin:0;max-width:620px;font-size:18px;line-height:1.6;color:var(--ink-2)}
.role-hero .ver{margin:10px 0 0;font-size:13px;color:var(--ink-3)}
.plats h2,.panel h2{margin:0 0 10px;font-size:12px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--ink-3)}
.pl{display:flex;align-items:center;gap:14px;margin-bottom:10px;padding:14px 16px;border-radius:16px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);transition:border-color var(--ease),box-shadow var(--ease)}
.pl:hover{text-decoration:none;border-color:var(--hover-line)}
.pl .radio{width:20px;height:20px;flex:none;border-radius:50%;border:2px solid var(--line-2)}
.pl .ic{display:grid;place-items:center;width:44px;height:44px;flex:none;border-radius:13px;background:var(--surface-2);color:var(--accent-ink)}
.pl .tx{flex:1;min-width:0}
.pl b{display:block;font-size:16px;font-weight:600}
.pl small{font-size:13px;color:var(--ink-3)}
.pl .n{font-size:13px;font-weight:600;color:var(--ink-3);white-space:nowrap}
.pl.on{border-color:var(--navy-2);box-shadow:var(--shadow-pop)}
.pl.on .radio{border:6px solid var(--navy-2)}
.pl.on .ic{background:var(--navy-2);color:#fff}
.pl.on .n{color:var(--accent-ink)}
.role-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start;margin-top:32px}
.start{position:relative;overflow:hidden;margin-bottom:40px;padding:26px 28px;border-radius:24px;background:linear-gradient(150deg,#132B63,#21489A);color:#fff}
.start::after{content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(248,179,66,.32),transparent 70%);pointer-events:none}
.start h2{margin:0;font-size:21px}
.start p{margin:4px 0 18px;font-size:14.5px;color:rgba(255,255,255,.78)}
.steps3{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.st{display:flex;flex-direction:column;gap:4px;padding:16px;border-radius:16px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.08);color:#fff;transition:background-color var(--ease)}
.st:hover{text-decoration:none;background:rgba(255,255,255,.15)}
.st .n{display:grid;place-items:center;width:30px;height:30px;margin-bottom:8px;border-radius:50%;background:var(--sun);color:#1B2236;font-size:14px;font-weight:700}
.st b{font-size:15.5px;font-weight:600;line-height:1.35}
.st small{font-size:13px;color:rgba(255,255,255,.72)}
.st:focus-visible{outline-color:#fff}
.sec{margin-bottom:36px;scroll-margin-top:84px}
.sec h2{margin:0;font-size:21px;letter-spacing:-.015em}
.sec .d{margin:4px 0 0;font-size:14.5px;color:var(--ink-3)}
.sec .cards{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:16px}
.card-meta{margin-top:6px;font-style:normal;font-size:12px;font-weight:600;color:var(--ink-3)}
.rail{position:sticky;top:84px;display:flex;flex-direction:column;gap:16px}
.panel{padding:18px 20px;border-radius:20px;border:1px solid var(--line);background:var(--surface)}
.on-page a{display:flex;justify-content:space-between;gap:10px;padding:6px 0;font-size:14.5px;font-weight:500;color:var(--ink-2)}
.on-page a:hover{color:var(--link);text-decoration:none}
.on-page a span{font-size:13px;color:var(--ink-3)}
.orole,.rolepill{display:grid;grid-template-columns:36px 1fr;column-gap:12px;align-items:center;color:var(--ink)}
.orole{padding:10px 0;border-top:1px solid var(--line)}
.orole:first-of-type{border-top:0}
.orole .ic,.rolepill .ic{grid-row:span 2;width:36px;height:36px;border-radius:11px}
.orole .ic .i,.rolepill .ic .i{width:19px;height:19px}
.orole b,.rolepill b{font-size:14.5px;font-weight:600;line-height:1.3}
.orole small,.rolepill small{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;font-weight:500;color:var(--ink-3)}
.orole:hover,.rolepill:hover{text-decoration:none}
.orole:hover b,.rolepill:hover b{color:var(--link)}
.need{padding:18px 20px;border-radius:20px;background:var(--sun-soft)}
.need b{font-size:16px}
.need p{margin:4px 0 14px;font-size:14px;color:var(--ink-2)}
.need a{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:11px;background:var(--navy);color:#fff;font-size:14px;font-weight:600}
.need a:hover{text-decoration:none;filter:brightness(1.1)}
.need a .i{width:17px;height:17px}

/* guide page */
.rolepill{margin-bottom:16px;padding:12px;border-radius:14px;background:var(--tint-blue)}
.rolepill .ic{background:var(--surface)!important}
.art-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;margin:16px 0 0;font-size:13px;color:var(--ink-3)}
.art-meta span{display:inline-flex;align-items:center;gap:6px}
.art-meta .i{width:16px;height:16px}
.art-meta .chip{padding:4px 11px;border-radius:99px;background:var(--tint-blue);color:var(--info);font-weight:600}
.toc .actions{display:flex;flex-direction:column;gap:2px;margin-top:24px}
.toc .actions button,.toc .actions a{display:flex;align-items:center;gap:8px;margin:0;padding:6px 0;border:0;line-height:1.4;background:none;color:var(--ink-2);font:inherit;font-size:13.5px;text-align:left;cursor:pointer}
.toc .actions button:hover,.toc .actions a:hover{color:var(--link);text-decoration:none}
.toc .actions .i{width:16px;height:16px}

/* support strip at the end of every page: light, like the rest of the template */
.contact,.chapter .contact{max-width:1240px}
.contact-in{justify-content:flex-start;gap:20px;padding:24px 28px;border:1px solid var(--line);background:var(--surface-2);color:var(--ink);box-shadow:none}
.contact-in>div{flex:1}
.contact-ic{display:grid;place-items:center;width:48px;height:48px;flex:none;border-radius:14px;background:var(--surface);color:var(--accent-ink)}
.contact-ic .i{width:24px;height:24px}
.contact h2{font-size:18px}
.contact p{margin:4px 0 0;color:var(--ink-2);opacity:1}
.contact .btn{background:var(--navy);color:#fff;box-shadow:none}
.contact .btn:focus-visible{outline-color:var(--focus)}
.tasks .all{display:flex;justify-content:flex-end;margin-top:6px;padding:8px 0;font-size:13.5px;font-weight:600}

@media (max-width:1180px){.hdr-contact span{display:none}}
@media (max-width:1100px){
  .home-in{grid-template-columns:minmax(0,1fr);gap:36px}
  .tasks{max-width:640px}
  .topics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .role-in{grid-template-columns:minmax(0,1fr);gap:28px;align-items:start}
  .plats{max-width:560px}
  .role-layout{grid-template-columns:1fr}
  .rail{position:static;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
}
@media (max-width:640px){
  .hdr-contact{display:none}
  .home-in,.role-in{padding:32px 16px 40px}
  .big-search{height:54px;font-size:15.5px}
  .big-search kbd{display:none}
  .roles{grid-template-columns:1fr}
  .role{display:grid;grid-template-columns:48px minmax(0,1fr);column-gap:14px;row-gap:2px;align-items:center;min-height:0;padding:14px 16px}
  .role .ic{grid-row:span 2}
  .role small{margin:0}
  .tasks{padding:16px;border-radius:20px}
  .topics{grid-template-columns:1fr}
  .role-layout{margin-top:20px}
  .start{padding:22px}
  .steps3,.sec .cards{grid-template-columns:1fr}
}
@media print{.rail,.hdr-contact,.toc .actions{display:none!important}}