:root{--bg:#f7f8fb;--panel:#ffffff;--text:#1b2230;--muted:#5a6475;--line:#dde2ea;--accent:#1f7ae0;--accent2:#7c4ddb;--code:#eef1f6;--note:#e8f2ff;--note-line:#1f7ae0;--warn:#fff4e0;--warn-line:#d98a00;--tip:#e7f7ee;--tip-line:#2b9a5a;--radius:12px;--side:270px;--toc:220px;color-scheme:light}
@media(prefers-color-scheme:dark){:root{--bg:#0b1119;--panel:#111a26;--text:#e8edf5;--muted:#9aa6b8;--line:#243041;--accent:#5aaeff;--accent2:#b18cff;--code:#18222f;--note:#10243c;--note-line:#5aaeff;--warn:#33250c;--warn-line:#f0a029;--tip:#0f2a1c;--tip-line:#43c86a;color-scheme:dark}}
*{box-sizing:border-box}
html{scroll-padding-top:72px}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,sans-serif;-webkit-text-size-adjust:100%}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:2px}
img{max-width:100%;height:auto}
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:14px;height:58px;padding:0 18px;background:var(--panel);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:9px;color:var(--text);text-decoration:none;font-weight:750;min-width:0}
.brand img{border-radius:7px}
.brand span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand em{font-style:normal;font-size:12px;font-weight:700;padding:2px 8px;border-radius:999px;background:var(--accent);color:#fff;white-space:nowrap}
.langs{margin-left:auto;display:flex;gap:4px}
.langs a{padding:4px 8px;border-radius:7px;color:var(--muted);text-decoration:none;font-size:13px;font-weight:700}
.langs a[aria-current]{background:var(--code);color:var(--text)}
.menu-toggle{display:none;border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:8px;padding:6px 10px;font:inherit;font-size:14px}
.layout{display:grid;grid-template-columns:var(--side) minmax(0,1fr) var(--toc);max-width:1440px;margin:0 auto}
.sidebar{position:sticky;top:58px;align-self:start;height:calc(100vh - 58px);overflow-y:auto;padding:20px 14px 40px;border-right:1px solid var(--line)}
.nav-section{margin-bottom:18px}
.nav-section strong{display:block;padding:0 10px 6px;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.nav-section ul{list-style:none;margin:0;padding:0}
.nav-section a{display:block;padding:5px 10px;border-radius:8px;color:var(--text);text-decoration:none;font-size:14.5px}
.nav-section a:hover{background:var(--code)}
.nav-section a[aria-current]{background:var(--note);color:var(--accent);font-weight:700}
main{min-width:0;padding:28px 40px 60px}
article{max-width:820px}
h1{font-size:34px;line-height:1.2;margin:0 0 8px}
.lead{font-size:18px;color:var(--muted);margin:0 0 26px}
h2{font-size:24px;margin:38px 0 10px;padding-top:6px;border-top:1px solid var(--line)}
h3{font-size:19px;margin:26px 0 8px}
h4{font-size:16px;margin:20px 0 6px}
.anchor{opacity:0;text-decoration:none;font-weight:400;color:var(--muted)}
h2:hover .anchor,h3:hover .anchor,h4:hover .anchor{opacity:1}
code{font:14px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--code);padding:1px 5px;border-radius:5px}
pre{background:var(--code);padding:14px 16px;border-radius:var(--radius);overflow-x:auto;border:1px solid var(--line)}
pre code{padding:0;background:none}
.table-wrap{overflow-x:auto;margin:14px 0}
table{border-collapse:collapse;width:100%;font-size:15px}
th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--code);font-weight:700}
.callout{margin:16px 0;padding:10px 16px;border-left:4px solid var(--note-line);background:var(--note);border-radius:0 var(--radius) var(--radius) 0}
.callout p{margin:6px 0}
.callout-warning,.callout-important{border-color:var(--warn-line);background:var(--warn)}
.callout-tip{border-color:var(--tip-line);background:var(--tip)}
article img{display:block;margin:16px 0;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 6px 22px #0000001a}
.pager{display:flex;justify-content:space-between;gap:14px;max-width:820px;margin:44px 0 0}
.pager a{flex:1;display:grid;padding:12px 16px;border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:var(--text);background:var(--panel)}
.pager a small{color:var(--muted)}
.pager .next{text-align:right}
.page-footer{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;max-width:820px;margin-top:30px;padding-top:16px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.toc{position:sticky;top:58px;align-self:start;max-height:calc(100vh - 58px);overflow-y:auto;padding:28px 14px;font-size:14px}
.toc strong{display:block;margin-bottom:6px;color:var(--muted);font-size:12px;letter-spacing:.06em;text-transform:uppercase}
.toc ul{list-style:none;margin:0;padding:0}
.toc a{display:block;padding:3px 0;color:var(--muted);text-decoration:none}
.toc a:hover{color:var(--accent)}
@media(max-width:1180px){.layout{grid-template-columns:var(--side) minmax(0,1fr)}.toc{display:none}}
@media(max-width:860px){
 .layout{grid-template-columns:1fr}
 .menu-toggle{display:inline-flex;gap:6px}
 .menu-toggle span{display:none}
 .brand span{display:none}
 .sidebar{position:fixed;top:58px;left:0;z-index:15;width:min(86vw,320px);background:var(--panel);transform:translateX(-102%);transition:transform .2s ease;box-shadow:12px 0 30px #0003}
 body.nav-open .sidebar{transform:none}
 main{padding:22px 16px 48px}
 h1{font-size:28px}
}
.home{display:flex;min-height:100vh;align-items:center;justify-content:center}
.home-main{max-width:880px;padding:40px 16px;text-align:center}
.home-logo{border-radius:22px;box-shadow:0 10px 30px #0000002e}
.home-tagline{color:var(--muted);font-size:17px}
.home-variants{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(320px,100%),1fr));gap:18px;margin-top:28px;text-align:left}
.home-card{padding:20px 22px;border:1px solid var(--line);border-radius:16px;background:var(--panel)}
.home-card h2{border:0;margin:0 0 10px;padding:0}
.home-card-muted{opacity:.85}
.home-langs{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:8px}
.home-langs a{display:block;padding:10px 12px;border:1px solid var(--line);border-radius:10px;text-decoration:none;font-weight:700;text-align:center}
.home-langs a:hover{background:var(--note)}

/* Switch between separate NG and Classic manuals without losing the language. */
.product-nav{display:flex;align-items:center;gap:4px;margin-left:auto;padding:3px;border:1px solid var(--line);border-radius:10px;white-space:nowrap}
.product-nav a{padding:4px 10px;text-decoration:none;color:var(--muted);border-radius:7px;font-size:13px;font-weight:700}
.product-nav a[aria-current]{background:var(--note);color:var(--accent)}
.langs{margin-left:0}
@media(max-width:860px){
 .brand em{display:none}
 .topbar{gap:10px;padding:0 12px}
 .product-nav a{padding:4px 7px}
}
@media(max-width:440px){
 .topbar{gap:5px;padding:0 6px}
 .product-nav{gap:0;padding:2px}
 .product-nav a{font-size:12px;padding:4px 5px}
 .langs{gap:0}
 .langs a{font-size:12px;padding:4px 5px}
 .menu-toggle{padding:5px 6px}
 .brand img{width:23px;height:23px}
}


/* Explicit light/dark choice overrides the OS preference, and persists locally. */
:root[data-theme="light"]{--bg:#f7f8fb;--panel:#fff;--text:#1b2230;--muted:#5a6475;--line:#dde2ea;--accent:#1f7ae0;--accent2:#7c4ddb;--code:#eef1f6;--note:#e8f2ff;--note-line:#1f7ae0;--warn:#fff4e0;--warn-line:#d98a00;--tip:#e7f7ee;--tip-line:#2b9a5a;color-scheme:light}
:root[data-theme="dark"]{--bg:#0b1119;--panel:#111a26;--text:#e8edf5;--muted:#9aa6b8;--line:#243041;--accent:#5aaeff;--accent2:#b18cff;--code:#18222f;--note:#10243c;--note-line:#5aaeff;--warn:#33250c;--warn-line:#f0a029;--tip:#0f2a1c;--tip-line:#43c86a;color-scheme:dark}
.header-action{display:inline-flex;align-items:center;justify-content:center;gap:5px;flex-shrink:0;min-height:34px;padding:5px 11px;border:1px solid var(--line);border-radius:9px;background:var(--panel);color:var(--text);font:600 14px system-ui,sans-serif;cursor:pointer}
.header-action:hover,.header-action:focus-visible{border-color:var(--accent);background:var(--note)}
.header-action:focus-visible,.gpio-pin:focus-visible,.gpio-switch:focus-within,.search-input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.theme-toggle{min-width:36px;font-size:19px;padding:2px 6px}
.search-panel[hidden]{display:none}
.search-panel{position:fixed;z-index:40;top:64px;right:18px;width:min(510px,calc(100vw - 36px));padding:18px;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:0 18px 50px #0005;max-height:calc(100vh - 82px);overflow:auto}
.search-panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.search-input{width:100%;padding:11px 14px;font:inherit;background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:9px}
.search-message{margin:16px 0 2px;color:var(--muted);font-size:14px}
.search-result-list{list-style:none;margin:12px 0 0;padding:0}
.search-result-list li+li{border-top:1px solid var(--line)}
.search-result-link{display:grid;padding:10px 8px;text-decoration:none;border-radius:7px}
.search-result-link:hover{background:var(--note)}
.search-result-link small{font-size:13px;color:var(--muted);line-height:1.4}
.home-toolbar{position:fixed;z-index:18;right:22px;top:18px;display:flex;gap:7px}
.docs-widget{margin:22px 0 30px;padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:16px}
.docs-widget>h2{margin:0 0 8px;padding:0;border:0;font-size:24px}
.docs-widget>h3{margin:20px 0 10px;font-size:17px}
.docs-widget>p{margin:8px 0 12px}
.setup-description,.setup-progress{color:var(--muted)}
.setup-progress{font-weight:700;font-size:14px}
.setup-steps{display:grid;gap:10px;list-style:none;padding:0;margin:14px 0}
.setup-item{padding:11px 14px;border:1px solid var(--line);border-radius:11px;background:var(--bg)}
.setup-item.completed{opacity:.66}
.setup-item-label{display:flex;align-items:start;gap:10px;font-weight:700;line-height:1.45;cursor:pointer}
.setup-item-label input{width:18px;height:18px;accent-color:var(--accent);flex:none;margin-top:3px}
.setup-item p{margin:4px 0 5px 28px;color:var(--muted);font-size:14px}
.setup-item .setup-link{margin-left:28px;font-size:13px;font-weight:700}
.setup-connect{margin-top:24px;padding:14px 16px;background:var(--note);border-radius:12px;border:1px solid var(--line)}
.setup-connect h3{margin:0 0 5px;font-size:18px}
.setup-connect p{font-size:14px;margin:4px 0 10px}
.setup-connect input{display:block;width:100%;max-width:380px;background:var(--panel);border:1px solid var(--line);padding:10px 12px;border-radius:8px;color:var(--text);font:inherit}
.setup-open{display:inline-block;margin:10px 0 7px;padding:8px 12px;text-decoration:none;background:var(--accent);color:#fff;border-radius:8px;font-weight:700}
.setup-open[aria-disabled="true"]{pointer-events:none;opacity:.45}
.setup-note{display:block;color:var(--muted);font-size:12px}
.gpio-switches{display:flex;flex-wrap:wrap;gap:8px}
.gpio-switch{display:inline-flex;align-items:center;gap:6px;cursor:pointer;border:1px solid var(--line);border-radius:999px;padding:6px 10px;background:var(--bg);font-size:13px;font-weight:600;line-height:1.25}
.gpio-switch:has(input:checked){background:var(--note);border-color:var(--accent)}
.gpio-switch input{margin:0;accent-color:var(--accent)}
.gpio-dot{width:9px;height:9px;flex:none;border-radius:50%;background:var(--accent)}
.gpio-color-0{background:#6470cb}.gpio-color-1{background:#b560b4}.gpio-color-2{background:#d48a46}.gpio-color-3{background:#8b73cb}.gpio-color-4{background:#50a39b}.gpio-color-5{background:#dfb344}.gpio-color-6{background:#4e9cc6}.gpio-color-7{background:#cf7a9a}.gpio-color-8{background:#60a16a}
.gpio-status{padding:10px 12px;background:var(--tip);color:var(--text);border-left:3px solid var(--tip-line);border-radius:8px;font-size:14px;line-height:1.5}
.gpio-status.gpio-alert{background:var(--warn);border-left-color:#c43d35}
.gpio-visual{display:grid;grid-template-columns:minmax(250px,1.2fr) minmax(210px,1fr);gap:16px;align-items:start}
.gpio-header{max-width:430px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:3px 8px;padding:16px;border:1px solid var(--line);border-radius:13px;background:var(--bg)}
.gpio-pin{width:100%;min-width:0;height:35px;display:flex;gap:6px;align-items:center;padding:3px 7px;border:1px solid transparent;border-radius:7px;background:transparent;color:var(--text);cursor:pointer;text-align:left;font-size:13px}
.gpio-pin:nth-child(even){flex-direction:row-reverse;text-align:right}
.gpio-pin:hover,.gpio-pin.gpio-focused{border-color:var(--accent);background:var(--note)}
.gpio-number{flex:none;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;width:23px;height:23px;font-size:11px;font-weight:700;background:var(--panel)}
.gpio-pin-name{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.gpio-ground,.gpio-voltage{color:var(--muted);opacity:.77}
.gpio-pin.gpio-used{background:#6572c21e;border-color:#6b78c77a}
.gpio-pin.gpio-shared{border-style:dashed}
.gpio-pin.gpio-conflict{background:#d452472b;border-color:#c43d35}
.gpio-pin.gpio-conflict .gpio-number{background:#c43d35;color:#fff;border-color:#c43d35}
.gpio-details{position:sticky;top:85px;padding:15px 16px;background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow-wrap:anywhere}
.gpio-details h3{margin:0 0 8px;font-size:17px}
.gpio-details p{font-size:14px;margin:9px 0}
.gpio-details ul{margin:9px 0 0;padding-left:20px;font-size:13px}
.gpio-hint,.gpio-safety{font-size:13px;color:var(--muted)}
.gpio-safety{padding:10px;border-left:3px solid var(--warn-line);background:var(--warn);border-radius:5px}
@media(max-width:1120px){.gpio-visual{grid-template-columns:minmax(0,1fr)}.gpio-details{position:static}.gpio-header{max-width:440px}}
@media(max-width:860px){.search-toggle{font-size:0;min-width:36px;padding:0}.search-toggle:before{content:"⌕";font-size:20px}.docs-widget{padding:14px}.gpio-switch{font-size:12px}}
@media(max-width:540px){.gpio-header{padding:8px;gap:2px}.gpio-pin{height:34px;font-size:12px;padding:1px 3px;gap:3px}.gpio-number{width:21px;height:21px}.search-panel{right:7px;width:calc(100vw - 14px)}}

.setup-link.setup-settings{display:inline-block;margin-left:14px}
.setup-link[aria-disabled="true"]{opacity:.4;pointer-events:none;text-decoration:none;cursor:default}