:root {
  color-scheme: dark;
  --topbar: 64px;
  --sidebar: 284px;
  --bg: #07080a;
  --bg-side: #0a0b0e;
  --panel: #0e1013;
  --panel-2: #13161b;
  --line: #1f2229;
  --line-strong: #2b2f38;
  --line-soft: rgba(255,255,255,.06);
  --text: #f3f4f0;
  --body: #c9ccc6;
  --muted: #9ba0aa;
  --subtle: #6a707c;
  --accent: #5c9dff;
  --accent-fill: #1a66ff;
  --accent-ink: #ffffff;
  --accent-soft: rgba(92,157,255,.09);
  --accent-line: rgba(92,157,255,.3);
  --link: #7fb2ff;
  --info: #7aaefb;
  --info-soft: rgba(122,174,251,.08);
  --info-line: rgba(122,174,251,.26);
  --warn: #f5b84b;
  --warn-soft: rgba(245,184,75,.08);
  --warn-line: rgba(245,184,75,.28);
  --danger: #f87171;
  --danger-soft: rgba(248,113,113,.08);
  --danger-line: rgba(248,113,113,.28);
  --ok: #4ade80;
  --get: #7ee0f0;
  --get-soft: rgba(126,224,240,.1);
  --code-bg: #0b0d10;
  --code-head: #101318;
  --code-text: #e4e6e1;
  --tok-comment: #6f7684;
  --tok-string: #b9e98a;
  --tok-keyword: #c8a8ff;
  --tok-number: #f5b84b;
  --tok-func: #7cc4ff;
  --tok-prop: #9fd8ff;
  --tok-var: #ffb38a;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  font-family: var(--font-sans);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); -webkit-text-size-adjust: 100%; }
body { margin: 0; min-width: 320px; color: var(--text); background: var(--bg); line-height: 1.65; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }
img, svg { max-width: 100%; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.skip-link { position: fixed; z-index: 100; top: -60px; left: 16px; padding: 9px 14px; border-radius: 8px; color: var(--accent-ink); background: var(--accent-fill); font-weight: 650; transition: top .2s; }
.skip-link:focus { top: 12px; }
.noscript-note { margin: 0 0 24px; padding: 14px 16px; border: 1px solid var(--warn-line); border-radius: 10px; color: var(--body); background: var(--warn-soft); font-size: 14px; }
.noscript-note a { color: var(--link); text-decoration: underline; }

/* ── Top bar ─────────────────────────────────────────────────────────── */
.topbar { position: fixed; z-index: 40; inset: 0 0 auto; height: var(--topbar); display: grid; grid-template-columns: minmax(250px, 1fr) minmax(260px, 560px) minmax(250px, 1fr); align-items: center; gap: 20px; padding: 0 24px; border-bottom: 1px solid var(--line); background: rgba(7,8,10,.9); backdrop-filter: blur(18px); }
.topbar-left { display: flex; align-items: center; min-width: 0; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 0; color: var(--text); font-size: 14px; font-weight: 650; letter-spacing: -.01em; }
.brand img { display: block; width: auto; height: 24px; }
.brand-divider { width: 1px; height: 20px; background: var(--line-strong); }
.brand strong { color: var(--muted); font-weight: 560; }
.search-trigger { width: 100%; height: 40px; display: grid; grid-template-columns: 18px 1fr auto; align-items: center; gap: 10px; padding: 0 12px; border: 1px solid var(--line-strong); border-radius: 10px; color: var(--subtle); background: var(--panel); cursor: pointer; transition: border-color .2s, background .2s; }
.search-trigger:hover { border-color: #3a3f4a; background: var(--panel-2); }
.search-trigger svg, .search-input-row svg { width: 17px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; }
.search-trigger span { text-align: left; font-size: 13.5px; }
kbd { min-width: 24px; height: 22px; display: inline-grid; place-items: center; padding: 0 5px; border: 1px solid var(--line-strong); border-radius: 5px; color: var(--muted); background: var(--panel-2); font: 11px/1 var(--font-mono); box-shadow: inset 0 -1px rgba(0,0,0,.35); }
.top-links { display: flex; align-items: center; justify-content: flex-end; gap: 20px; font-size: 13px; font-weight: 600; }
.top-links a { color: var(--muted); transition: color .2s; }
.top-links a:hover { color: var(--text); }
.top-links .pdf-link { display: inline-flex; align-items: center; gap: 7px; padding: 7px 12px; border: 1px solid var(--accent-line); border-radius: 8px; color: var(--accent); background: var(--accent-soft); }
.top-links .pdf-link:hover { color: var(--accent); background: rgba(92,157,255,.14); }
.pdf-link svg { width: 15px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.icon-button { border: 0; background: none; cursor: pointer; }
.menu-button { display: none; width: 40px; height: 40px; margin-right: 6px; align-items: center; justify-content: center; border-radius: 8px; }
.menu-button svg { width: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; }

/* ── Sidebar ─────────────────────────────────────────────────────────── */
.docs-layout { min-height: 100vh; padding-top: var(--topbar); }
.sidebar { position: fixed; z-index: 30; top: var(--topbar); bottom: 0; left: 0; width: var(--sidebar); display: flex; flex-direction: column; border-right: 1px solid var(--line); background: var(--bg-side); }
.sidebar-scroll { flex: 1; min-height: 0; overflow-y: auto; padding: 20px 16px 28px; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.version-select { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 12px; border: 1px solid var(--line-strong); border-radius: 9px; color: var(--body); background: var(--panel); font-size: 12px; font-weight: 650; }
.version-select span { display: flex; align-items: center; gap: 9px; }
.version-select i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.version-select small { padding: 1px 7px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--muted); font-size: 11px; font-weight: 600; }
.side-nav section { margin-top: 24px; }
.side-nav h2 { margin: 0 0 6px 12px; color: var(--subtle); font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.side-nav a { position: relative; width: 100%; min-height: 36px; display: grid; grid-template-columns: 22px 1fr; align-items: center; gap: 8px; margin: 1px 0; padding: 7px 12px; border-radius: 8px; color: var(--muted); font-size: 13.5px; transition: color .15s, background .15s; }
.side-nav a:hover { color: var(--text); background: rgba(255,255,255,.03); }
.side-nav a.active { color: var(--text); background: var(--accent-soft); }
.side-nav a.active::before { content: ""; position: absolute; left: -16px; width: 2px; height: 20px; border-radius: 2px; background: var(--accent); box-shadow: 0 0 12px rgba(92,157,255,.5); }
.nav-icon { display: grid; place-items: center; color: var(--subtle); font-family: var(--font-mono); font-size: 12px; }
.side-nav a.active .nav-icon { color: var(--accent); }
.sidebar-footer { display: grid; gap: 4px; padding: 14px 18px 16px; border-top: 1px solid var(--line-soft); }
.sidebar-footer a { display: flex; align-items: center; gap: 9px; padding: 8px 10px; border-radius: 8px; color: var(--muted); font-size: 13px; transition: color .15s, background .15s; }
.sidebar-footer a:hover { color: var(--text); background: rgba(255,255,255,.03); }
.sidebar-footer svg { width: 15px; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.sidebar-backdrop { display: none; }

/* ── Main column ─────────────────────────────────────────────────────── */
.main { margin-left: var(--sidebar); display: grid; grid-template-columns: minmax(0, 780px) 210px; justify-content: center; gap: 64px; min-height: calc(100vh - var(--topbar)); padding: 52px 48px 96px; }
.page { display: none; width: 100%; min-width: 0; }
.page.is-active { display: block; }
.breadcrumbs { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 30px; color: var(--subtle); font-size: 12.5px; }
.breadcrumbs b { color: var(--line-strong); font-weight: 400; }
.breadcrumbs strong { color: var(--muted); font-weight: 600; }
.kicker { display: inline-flex; align-items: center; gap: 9px; margin-bottom: 14px; color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.kicker::before { content: ""; width: 18px; height: 1px; background: var(--accent); }
.page h1 { margin: 0; color: var(--text); font-size: clamp(32px, 4.2vw, 44px); line-height: 1.1; letter-spacing: -.035em; }
.page .lead { margin: 16px 0 32px; color: var(--muted); font-size: 18px; line-height: 1.6; }
.page h2 { position: relative; margin: 52px 0 14px; color: var(--text); font-size: 24px; line-height: 1.25; letter-spacing: -.02em; scroll-margin-top: calc(var(--topbar) + 24px); }
.page h3 { position: relative; margin: 34px 0 10px; color: var(--text); font-size: 18px; line-height: 1.35; letter-spacing: -.01em; scroll-margin-top: calc(var(--topbar) + 24px); }
.page h4 { margin: 24px 0 8px; color: var(--text); font-size: 15px; }
.heading-anchor { position: absolute; left: -22px; top: 0; padding-right: 6px; color: var(--subtle); font-weight: 500; opacity: 0; transition: opacity .15s; }
h2:hover .heading-anchor, h3:hover .heading-anchor, .heading-anchor:focus { opacity: 1; }
.page p, .page li { color: var(--body); font-size: 15.5px; }
.page p { margin: 0 0 16px; }
.page ul, .page ol { margin: 0 0 18px; padding-left: 22px; }
.page li { margin: 6px 0; padding-left: 2px; }
.page li::marker { color: var(--subtle); }
.page strong { color: var(--text); font-weight: 650; }
.page a:not(.card):not(.page-nav a):not(.heading-anchor) { color: var(--link); text-decoration: underline; text-decoration-color: var(--accent-line); text-underline-offset: 3px; transition: text-decoration-color .15s; }
.page a:not(.card):not(.heading-anchor):hover { text-decoration-color: var(--link); }
.page hr { margin: 44px 0; border: 0; border-top: 1px solid var(--line); }
.page :not(pre) > code { padding: .14em .42em; border: 1px solid var(--line); border-radius: 6px; color: var(--text); background: var(--panel-2); font: .86em/1.5 var(--font-mono); overflow-wrap: break-word; }
.muted { color: var(--muted); }
.small { font-size: 13.5px !important; }

/* Tables */
.table-wrap { margin: 18px 0 24px; overflow-x: auto; border: 1px solid var(--line); border-radius: 11px; background: var(--panel); }
.table-wrap table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table-wrap th { padding: 10px 14px; border-bottom: 1px solid var(--line); color: var(--muted); background: var(--panel-2); font-size: 12px; font-weight: 650; letter-spacing: .04em; text-align: left; text-transform: uppercase; white-space: nowrap; }
.table-wrap td { padding: 11px 14px; border-top: 1px solid var(--line); color: var(--body); vertical-align: top; line-height: 1.55; }
.table-wrap tr:first-child td { border-top: 0; }
.table-wrap td:first-child { color: var(--text); }
.table-wrap td code { white-space: nowrap; }
.table-wrap td p { margin: 0 0 6px; font-size: 14px; }
.table-wrap td p:last-child { margin: 0; }
.nowrap { white-space: nowrap; }
.badge { display: inline-block; margin: 0 4px 0 0; padding: 1px 7px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--muted); font-size: 11px; font-weight: 650; letter-spacing: .02em; line-height: 1.6; vertical-align: 1px; white-space: nowrap; }
.badge.req { border-color: var(--warn-line); color: var(--warn); background: var(--warn-soft); }
.badge.opt { color: var(--subtle); }
.badge.cond { border-color: var(--info-line); color: var(--info); background: var(--info-soft); }
.type { display: block; margin-top: 3px; color: var(--subtle); font: 12px/1.4 var(--font-mono); }

/* Code blocks */
.code { margin: 18px 0 24px; overflow: hidden; border: 1px solid var(--line); border-radius: 11px; background: var(--code-bg); }
.code-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 40px; padding: 0 8px 0 14px; border-bottom: 1px solid var(--line); background: var(--code-head); }
.code-title { display: flex; align-items: center; gap: 9px; min-width: 0; color: var(--muted); font: 12.5px/1.4 var(--font-mono); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.code-title i { flex: 0 0 auto; padding: 1px 6px; border: 1px solid var(--line-strong); border-radius: 5px; color: var(--subtle); font-size: 10.5px; font-style: normal; letter-spacing: .04em; text-transform: uppercase; }
.copy-button { display: inline-flex; align-items: center; gap: 6px; flex: 0 0 auto; height: 28px; padding: 0 10px; border: 1px solid transparent; border-radius: 7px; color: var(--muted); background: transparent; font-size: 12px; cursor: pointer; transition: color .15s, background .15s, border-color .15s; }
.copy-button:hover { border-color: var(--line-strong); color: var(--text); background: var(--panel-2); }
.copy-button.copied { color: var(--accent); }
.copy-button svg { width: 14px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.page pre { margin: 0; padding: 16px 18px; overflow-x: auto; color: var(--code-text); font: 13px/1.65 var(--font-mono); tab-size: 2; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.page pre code { font: inherit; }
.page > pre, .tab-panel > pre { margin: 18px 0 24px; border: 1px solid var(--line); border-radius: 11px; background: var(--code-bg); }
.tok-comment { color: var(--tok-comment); font-style: italic; }
.tok-string { color: var(--tok-string); }
.tok-keyword { color: var(--tok-keyword); }
.tok-number { color: var(--tok-number); }
.tok-func { color: var(--tok-func); }
.tok-prop { color: var(--tok-prop); }
.tok-var { color: var(--tok-var); }
.tok-lit { color: var(--tok-number); }
.nl { color: var(--accent); font-weight: 700; }

/* Endpoint banner */
.endpoint { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 12px; margin: 8px 0 24px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 11px; background: var(--panel); font: 14px/1.5 var(--font-mono); }
.endpoint code { min-width: 0; color: var(--text); overflow-wrap: anywhere; }
.endpoint .base { color: var(--subtle); }
.method { flex: 0 0 auto; padding: 2px 8px; border-radius: 6px; font: 700 12px/1.6 var(--font-mono); letter-spacing: .04em; }
.method.get { color: var(--get); background: var(--get-soft); }
.method.post { color: var(--accent); background: var(--accent-soft); }

/* Callouts */
.callout { display: grid; grid-template-columns: 28px 1fr; gap: 12px; margin: 20px 0 24px; padding: 15px 18px; border: 1px solid var(--info-line); border-radius: 11px; background: var(--info-soft); }
.callout-icon { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 8px; color: var(--info); background: rgba(122,174,251,.14); font: 700 13px/1 Georgia, serif; }
.callout > div > :last-child { margin-bottom: 0; }
.callout p, .callout li { font-size: 14.5px !important; }
.callout p:first-child strong:first-child { display: block; margin-bottom: 2px; }
.callout.warn { border-color: var(--warn-line); background: var(--warn-soft); }
.callout.warn .callout-icon { color: var(--warn); background: rgba(245,184,75,.14); }
.callout.danger { border-color: var(--danger-line); background: var(--danger-soft); }
.callout.danger .callout-icon { color: var(--danger); background: rgba(248,113,113,.14); }
.callout.ok { border-color: var(--accent-line); background: var(--accent-soft); }
.callout.ok .callout-icon { color: var(--accent); background: rgba(92,157,255,.14); font-family: var(--font-sans); }

/* Cards, facts, flow */
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 18px 0 26px; }
.card { display: block; padding: 17px 18px; border: 1px solid var(--line); border-radius: 12px; background: linear-gradient(150deg, var(--panel-2), var(--panel)); transition: border-color .2s, transform .2s; }
.card:hover { border-color: var(--accent-line); transform: translateY(-1px); }
.card strong { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--text); font-size: 15px; }
.card strong::after { content: "→"; color: var(--subtle); font-weight: 400; transition: color .2s, transform .2s; }
.card:hover strong::after { color: var(--accent); transform: translateX(2px); }
.card span { display: block; margin-top: 4px; color: var(--muted); font-size: 13.5px; line-height: 1.55; }
.facts { display: grid; grid-template-columns: 190px 1fr; margin: 18px 0 26px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); overflow: hidden; }
.facts dt, .facts dd { margin: 0; padding: 11px 16px; border-top: 1px solid var(--line); font-size: 14.5px; }
.facts dt { color: var(--muted); font-weight: 600; }
.facts dd { min-width: 0; color: var(--body); }
.facts dt:first-of-type, .facts dt:first-of-type + dd { border-top: 0; }
.flow { margin: 22px 0 28px; padding: 0; list-style: none; counter-reset: flow; }
.flow li { position: relative; display: grid; grid-template-columns: 44px 1fr; gap: 14px; margin: 0 !important; padding: 0 0 20px !important; }
.flow li::before { counter-increment: flow; content: counter(flow); display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--accent-line); border-radius: 10px; color: var(--accent); background: var(--accent-soft); font: 700 14px/1 var(--font-mono); }
.flow li::after { content: ""; position: absolute; left: 17px; top: 40px; bottom: 4px; width: 1px; background: var(--line-strong); }
.flow li:last-child::after { display: none; }
.flow li:last-child { padding-bottom: 0 !important; }
.flow h3 { margin: 4px 0 4px !important; font-size: 16px !important; }
.flow p { margin: 0 !important; font-size: 14.5px !important; }
.actors { display: inline-flex; align-items: center; flex-wrap: wrap; gap: 6px; margin-bottom: 4px; color: var(--subtle); font-size: 12px; font-weight: 600; letter-spacing: .02em; }
.actors b { padding: 1px 8px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--muted); font-weight: 600; }

/* Quickstart steps */
.steps { margin: 24px 0; padding: 0; list-style: none; counter-reset: step; }
.steps > li { position: relative; margin: 0 !important; padding: 0 0 12px 48px !important; }
.steps > li::before { counter-increment: step; content: counter(step); position: absolute; left: 0; top: 30px; display: grid; place-items: center; width: 30px; height: 30px; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--text); background: var(--panel-2); font: 700 13px/1 var(--font-mono); }
.steps > li::after { content: ""; position: absolute; left: 15px; top: 66px; bottom: 0; width: 1px; background: var(--line); }
.steps > li:last-child::after { display: none; }
.steps > li > h2 { margin-top: 28px; }

/* Tabs */
.tabs { margin: 18px 0 26px; }
.tab-list { display: flex; gap: 4px; margin-bottom: -1px; overflow-x: auto; scrollbar-width: none; }
.tab { flex: 0 0 auto; padding: 8px 14px; border: 1px solid transparent; border-bottom: 0; border-radius: 9px 9px 0 0; color: var(--muted); background: transparent; font-size: 13px; font-weight: 600; cursor: pointer; }
.tab:hover { color: var(--text); }
.tab[aria-selected="true"] { border-color: var(--line); color: var(--text); background: var(--code-head); }
.tab-panel > .code, .tab-panel > pre { margin-top: 0; border-top-left-radius: 0; }
.tab-panel[hidden] { display: none; }

/* Diagrams */
.diagram { margin: 20px 0 26px; padding: 18px; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.diagram svg { display: block; width: 100%; min-width: 600px; height: auto; }
.diagram figcaption { margin-top: 10px; color: var(--subtle); font-size: 13px; }
.d-node { fill: var(--panel-2); stroke: var(--line-strong); stroke-width: 1.2; }
.d-node.active { stroke: var(--info-line); }
.d-node.good { fill: var(--accent-soft); stroke: var(--accent-line); }
.d-node.final { stroke-dasharray: 0; }
.d-title { fill: var(--text); font: 600 14px var(--font-sans); }
.d-sub { fill: var(--muted); font: 11.5px var(--font-mono); }
.d-edge { fill: none; stroke: var(--subtle); stroke-width: 1.3; }
.d-edge.late { stroke-dasharray: 4 4; }
.d-head { fill: var(--subtle); }
.d-label { fill: var(--muted); font: 11.5px var(--font-sans); }
.window { margin: 20px 0 26px; padding: 20px 18px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.window-bar { display: grid; grid-template-columns: 10fr 2fr 1fr; height: 12px; overflow: hidden; border-radius: 999px; background: var(--line); }
.window-bar span:nth-child(1) { background: var(--accent); }
.window-bar span:nth-child(2) { background: repeating-linear-gradient(135deg, var(--accent) 0 5px, rgba(92,157,255,.35) 5px 10px); }
.window-bar span:nth-child(3) { background: var(--line-strong); }
.window-marks { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-top: 16px; }
.window-marks div { padding-left: 10px; border-left: 2px solid var(--line-strong); }
.window-marks div:nth-child(1), .window-marks div:nth-child(2) { border-color: var(--accent); }
.window-marks div:nth-child(3) { border-color: var(--accent-line); }
.window-marks b { display: block; color: var(--text); font: 600 12.5px/1.4 var(--font-mono); }
.window-marks span { display: block; margin-top: 3px; color: var(--muted); font-size: 13px; line-height: 1.45; }

/* Checklist */
.checklist { padding: 0 !important; list-style: none; }
.checklist li { position: relative; padding-left: 30px !important; }
.checklist li::before { content: ""; position: absolute; left: 0; top: 5px; width: 16px; height: 16px; border: 1.5px solid var(--line-strong); border-radius: 4px; background: var(--panel); }

/* Worked example */
.worked { margin: 18px 0 26px; border: 1px solid var(--accent-line); border-radius: 12px; background: var(--accent-soft); overflow: hidden; }
.worked-row { display: grid; grid-template-columns: 150px minmax(0, 1fr); border-top: 1px solid var(--accent-line); }
.worked-row:first-child { border-top: 0; }
.worked-row > span { padding: 11px 14px; color: var(--muted); font-size: 13px; font-weight: 650; }
.worked-row > code, .worked-row > pre { min-width: 0; margin: 0; padding: 11px 14px !important; border: 0 !important; border-radius: 0 !important; color: var(--text) !important; background: transparent !important; font: 12.5px/1.6 var(--font-mono) !important; white-space: pre-wrap; word-break: break-all; }
.worked-row.result > code { color: var(--accent) !important; font-weight: 700 !important; }

/* Article footer and prev/next */
.page-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 64px; }
.page-nav a { display: block; padding: 15px 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); transition: border-color .2s; }
.page-nav a:hover { border-color: var(--accent-line); }
.page-nav small { display: block; color: var(--subtle); font-size: 12px; }
.page-nav strong { display: block; margin-top: 2px; color: var(--text); font-size: 15px; }
.page-nav .next { grid-column: 2; text-align: right; }
.article-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--subtle); font-size: 12.5px; }
.article-footer a { color: var(--muted) !important; text-decoration: none !important; }
.article-footer a:hover { color: var(--text) !important; }

/* On this page */
.on-this-page { position: sticky; top: calc(var(--topbar) + 44px); max-height: calc(100vh - var(--topbar) - 80px); overflow-y: auto; height: fit-content; padding-left: 16px; border-left: 1px solid var(--line); scrollbar-width: none; }
.on-this-page h2 { margin: 0 0 10px; color: var(--muted); font-size: 12px; font-weight: 650; }
.on-this-page a { position: relative; display: block; padding: 4px 0; color: var(--subtle); font-size: 12.5px; line-height: 1.45; transition: color .15s; }
.on-this-page a:hover { color: var(--text); }
.on-this-page a.sub { padding-left: 12px; font-size: 12px; }
.on-this-page a.active { color: var(--accent); }
.on-this-page a.active::before { content: ""; position: absolute; left: -17px; top: 6px; width: 2px; height: 14px; border-radius: 2px; background: var(--accent); }
.on-this-page:empty { display: none; }

/* Search */
.search-dialog { width: min(660px, calc(100% - 28px)); max-height: min(640px, calc(100vh - 28vh)); margin-top: 12vh; padding: 0; overflow: hidden; border: 1px solid var(--line-strong); border-radius: 14px; color: var(--text); background: var(--panel); box-shadow: 0 30px 100px rgba(0,0,0,.65); }
.search-dialog[open] { display: flex; flex-direction: column; }
.search-dialog::backdrop { background: rgba(3,4,6,.72); backdrop-filter: blur(4px); }
.search-box { display: flex; flex-direction: column; min-height: 0; margin: 0; }
.search-input-row { flex: 0 0 auto; height: 56px; display: grid; grid-template-columns: 22px 1fr auto; align-items: center; gap: 9px; padding: 0 14px; border-bottom: 1px solid var(--line); color: var(--subtle); }
.search-input-row input { width: 100%; border: 0; outline: 0; color: var(--text); background: transparent; font-size: 15px; }
.search-input-row input::placeholder { color: var(--subtle); }
.search-input-row input::-webkit-search-cancel-button { display: none; }
.search-input-row button { padding: 4px 8px; border: 1px solid var(--line-strong); border-radius: 6px; color: var(--muted); background: var(--panel-2); font-size: 11px; cursor: pointer; }
.search-results { min-height: 0; overflow-y: auto; padding: 8px; }
.search-results h3 { margin: 8px 10px 6px; color: var(--subtle); font-size: 11px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.search-result { display: block; padding: 10px 12px; border-radius: 9px; color: var(--body); }
.search-result.selected, .search-result:hover { background: var(--accent-soft); }
.search-result b { display: block; color: var(--text); font-size: 14px; font-weight: 600; }
.search-result b small { color: var(--subtle); font-weight: 500; }
.search-result span { display: block; margin-top: 2px; color: var(--muted); font-size: 13px; line-height: 1.5; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.search-result mark { padding: 0 1px; border-radius: 3px; color: var(--accent-ink); background: var(--accent-fill); }
.search-empty { padding: 36px 20px; color: var(--muted); font-size: 14px; text-align: center; }
.search-foot { flex: 0 0 auto; display: flex; gap: 16px; padding: 9px 16px; border-top: 1px solid var(--line); color: var(--subtle); font-size: 12px; }
.search-foot kbd { height: 19px; min-width: 20px; margin-right: 4px; font-size: 10px; }

/* Print-only blocks are hidden on screen unless the /print view is open */
.cover, .print-toc { display: none; }

@media (max-width: 1140px) {
  .topbar { grid-template-columns: minmax(200px, .8fr) minmax(240px, 1.2fr) auto; }
  .main { grid-template-columns: minmax(0, 780px); }
  .on-this-page { display: none; }
}

@media (max-width: 860px) {
  .topbar { grid-template-columns: 1fr minmax(170px, 300px); padding: 0 14px; }
  .menu-button { display: flex; }
  .top-links { display: none; }
  .sidebar { transform: translateX(-102%); box-shadow: 20px 0 60px rgba(0,0,0,.45); transition: transform .25s ease; }
  .sidebar-open .sidebar { transform: none; }
  .sidebar-backdrop { position: fixed; z-index: 25; inset: var(--topbar) 0 0; background: rgba(2,3,5,.66); }
  .sidebar-open .sidebar-backdrop { display: block; }
  .main { margin-left: 0; padding-inline: 32px; }
  .heading-anchor { display: none; }
}

@media (max-width: 600px) {
  :root { --topbar: 58px; }
  .topbar { grid-template-columns: 1fr auto; gap: 10px; }
  .brand-divider, .brand strong { display: none; }
  .brand img { height: 22px; }
  .search-trigger { width: 40px; height: 38px; grid-template-columns: 1fr; place-items: center; padding: 0; }
  .search-trigger span, .search-trigger kbd { display: none; }
  .main { padding: 30px 16px 72px; }
  .breadcrumbs { margin-bottom: 22px; }
  .page h1 { font-size: 32px; }
  .lead { font-size: 16.5px; }
  .page h2 { margin-top: 44px; font-size: 22px; }
  .page p, .page li { font-size: 15px; }
  .card-grid, .page-nav { grid-template-columns: 1fr; }
  .page-nav .next { grid-column: 1; }
  .facts { grid-template-columns: 1fr; }
  .facts dt { padding-bottom: 0; }
  .facts dd { padding-top: 2px; border-top: 0; }
  .worked-row { grid-template-columns: 1fr; }
  .worked-row > span { padding-bottom: 0; }
  .window-marks { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps > li { padding-left: 40px !important; }
  .steps > li::before { width: 28px; height: 28px; }
  .steps > li::after { left: 14px; }
  .page pre { font-size: 12.5px; padding: 14px; }
  .callout { grid-template-columns: 1fr; gap: 8px; padding: 14px; }
  .article-footer { align-items: flex-start; flex-direction: column; }
  .search-foot { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}

/* ── Print and the combined /print view (source of the PDF) ──────────── */
@page {
  size: A4;
  margin: 16mm 16mm 18mm;
  @bottom-left { content: "MekaPay Payment Gateway API · v1"; color: #7a7f87; font: 7.5pt "Segoe UI", system-ui, sans-serif; }
  @bottom-right { content: "Page " counter(page) " of " counter(pages); color: #7a7f87; font: 7.5pt "Segoe UI", system-ui, sans-serif; }
}
@page cover {
  margin: 0;
  @bottom-left { content: none; }
  @bottom-right { content: none; }
}

@media print {
  :root {
    color-scheme: light;
    --bg: #ffffff; --panel: #f7f8f5; --panel-2: #f0f2ed; --line: #dfe2db; --line-strong: #c9cdc4; --line-soft: #e6e8e3;
    --text: #111214; --body: #2a2d33; --muted: #4c515a; --subtle: #6d727b;
    --accent: #1a56db; --accent-fill: #1a56db; --accent-ink: #ffffff; --accent-soft: rgba(26,86,219,.07); --accent-line: rgba(26,86,219,.35); --link: #1a56db;
    --info: #1d4ed8; --info-soft: rgba(29,78,216,.05); --info-line: rgba(29,78,216,.28);
    --warn: #a35f00; --warn-soft: rgba(217,119,6,.06); --warn-line: rgba(217,119,6,.35);
    --danger: #b91c1c; --danger-soft: rgba(220,38,38,.05); --danger-line: rgba(220,38,38,.3);
    --get: #0e7490; --get-soft: rgba(14,116,144,.09);
    --code-bg: #f7f8f5; --code-head: #eef0ea; --code-text: #1b1d21;
    --tok-comment: #6b7280; --tok-string: #2f6f00; --tok-keyword: #6d28d9; --tok-number: #a65b00; --tok-func: #1d4ed8; --tok-prop: #0f5e8c; --tok-var: #b4400a;
  }
  html, body { background: #fff !important; }
  body { font-size: 10pt; }
  .topbar, .sidebar, .sidebar-backdrop, .on-this-page, .search-dialog, .skip-link, .copy-button, .page-nav, .heading-anchor, .breadcrumbs, .noscript-note { display: none !important; }
  .docs-layout { padding: 0; }
  .main { display: block; margin: 0; padding: 0; }
  .page h1 { font-size: 24pt; }
  .page .lead { margin: 8pt 0 16pt; font-size: 12pt; }
  .page h2 { margin: 20pt 0 6pt; font-size: 15pt; break-after: avoid; }
  .page h3 { margin: 14pt 0 5pt; font-size: 12pt; break-after: avoid; }
  .page h4 { break-after: avoid; }
  .page p, .page li { font-size: 9.8pt; line-height: 1.55; }
  .page p { margin-bottom: 7pt; orphans: 3; widows: 3; }
  .page a:not(.card) { text-decoration: none !important; }
  .page pre { padding: 8pt 10pt; overflow: visible; font-size: 7.6pt; line-height: 1.5; white-space: pre-wrap; overflow-wrap: anywhere; }
  .code, .page > pre, .tab-panel > pre { margin: 8pt 0 12pt; border-radius: 6px; }
  .code { break-inside: auto; }
  .code-head { min-height: 0; padding: 4pt 10pt; break-after: avoid; }
  .code-title { font-size: 7.8pt; }
  /* Frame the table, not its wrapper: a wrapper's border would run on to the
     foot of the page when a row moves to the next one. */
  .table-wrap { margin: 8pt 0 12pt; overflow: visible; border: 0; border-radius: 0; background: none; }
  .table-wrap table { border: 1px solid var(--line); }
  .table-wrap table { font-size: 8.6pt; }
  .table-wrap th { padding: 5pt 7pt; font-size: 7.4pt; }
  .table-wrap td { padding: 5pt 7pt; }
  .table-wrap td p { font-size: 8.6pt; }
  .table-wrap tr { break-inside: avoid; }
  .table-wrap td code { white-space: normal; }
  .table-wrap td:first-child code { white-space: nowrap; }
  .callout, .endpoint, .worked, .window, .diagram, .card, .flow li, .steps > li > h2, .facts dt, .facts dd { break-inside: avoid; }
  .no-print { display: none !important; }
  .callout { margin: 8pt 0 12pt; padding: 8pt 10pt; border-radius: 6px; }
  .callout p, .callout li { font-size: 9.2pt !important; }
  .endpoint { margin: 4pt 0 12pt; padding: 6pt 10pt; font-size: 9pt; }
  .card-grid { gap: 6pt; margin: 8pt 0 12pt; }
  .card { padding: 8pt 10pt; border-radius: 6px; background: var(--panel); }
  .card strong { font-size: 10pt; }
  .card span { font-size: 8.8pt; }
  .facts { grid-template-columns: 38mm 1fr; margin: 8pt 0 12pt; border-radius: 6px; }
  .facts dt, .facts dd { padding: 5pt 8pt; font-size: 9pt; }
  .diagram { padding: 8pt; overflow: visible; border-radius: 6px; }
  .diagram svg { min-width: 0; }
  .diagram figcaption { margin-top: 4pt; font-size: 8.6pt; }
  .window { padding: 10pt; border-radius: 6px; }
  .window-marks span { font-size: 8.6pt; }
  .worked-row > span { font-size: 8.6pt; padding: 6pt 8pt; }
  .worked-row > code, .worked-row > pre { padding: 6pt 8pt !important; font-size: 8pt !important; }
  .tab-list { display: none; }
  .tab-panel[hidden] { display: block; }
  .tab-panel::before { content: attr(data-label); display: block; margin: 10pt 0 4pt; color: var(--muted); font-size: 8.6pt; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; break-after: avoid; }
  .tab-panel > .code, .tab-panel > pre { border-top-left-radius: 6px; }
  .steps > li { padding-left: 30pt !important; }
  .steps > li::before { top: 22pt; }
  .steps > li::after { display: none; }
  .flow li { padding-bottom: 10pt !important; }
  .flow h3 { font-size: 10.5pt !important; }
  .flow p { font-size: 9.6pt !important; }
  .article-footer { margin-top: 18pt; font-size: 8pt; }
  .article-footer a { display: none; }
}

/* The /print view shows every page, a cover and a table of contents. */
.print-all .page { display: block; }
.print-all .page-not-found { display: none !important; }
.print-all .page + .page { break-before: page; }
.print-all .article-footer { display: none; }
@media screen {
  :root.print-all {
    color-scheme: light;
    --bg: #ffffff; --panel: #f7f8f5; --panel-2: #f0f2ed; --line: #dfe2db; --line-strong: #c9cdc4; --line-soft: #e6e8e3;
    --text: #111214; --body: #2a2d33; --muted: #4c515a; --subtle: #6d727b;
    --accent: #1a56db; --accent-fill: #1a56db; --accent-ink: #ffffff; --accent-soft: rgba(26,86,219,.07); --accent-line: rgba(26,86,219,.35); --link: #1a56db;
    --info: #1d4ed8; --info-soft: rgba(29,78,216,.05); --info-line: rgba(29,78,216,.28);
    --warn: #a35f00; --warn-soft: rgba(217,119,6,.06); --warn-line: rgba(217,119,6,.35);
    --danger: #b91c1c; --danger-soft: rgba(220,38,38,.05); --danger-line: rgba(220,38,38,.3);
    --get: #0e7490; --get-soft: rgba(14,116,144,.09);
    --code-bg: #f7f8f5; --code-head: #eef0ea; --code-text: #1b1d21;
    --tok-comment: #6b7280; --tok-string: #2f6f00; --tok-keyword: #6d28d9; --tok-number: #a65b00; --tok-func: #1d4ed8; --tok-prop: #0f5e8c; --tok-var: #b4400a;
    background: #e9ebe6;
  }
  .print-all body { background: #e9ebe6; }
  .print-all .topbar, .print-all .sidebar, .print-all .on-this-page { display: none; }
  .print-all .docs-layout { padding-top: 0; }
  .print-all .main { display: block; max-width: 860px; margin: 0 auto; padding: 32px; background: var(--bg); }
  .print-all .cover, .print-all .print-toc { display: block; margin-bottom: 32px; color: #111; background: #fff; }
}
@media print {
  .print-all .cover { display: block; }
  .print-all .print-toc { display: block; }
}

.cover { page: cover; position: relative; width: 210mm; height: 296mm; overflow: hidden; color: #0b0b0f; background: #fbfbf8; break-after: page; font-family: var(--font-sans); }
.cover-pattern { position: absolute; top: 0; right: 0; width: 210mm; height: 150mm; fill: #1a56db; }
.cover-inner { position: absolute; inset: 22mm 20mm 0; display: flex; flex-direction: column; }
.cover-logo { width: 62mm; height: auto; }
.cover-kicker { margin-top: 76mm; color: #1a56db; font-size: 10pt; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.cover h1 { margin: 5mm 0 0; color: #0b0b0f; font-size: 38pt; line-height: 1.04; letter-spacing: -.035em; }
.cover-sub { max-width: 140mm; margin: 6mm 0 0; color: #3c4048; font-size: 13pt; line-height: 1.5; }
.cover-meta { display: grid; grid-template-columns: 34mm 1fr; gap: 2.4mm 6mm; margin-top: 16mm; padding-top: 7mm; border-top: 1px solid #d9dcd4; font-size: 9.5pt; }
.cover-meta dt { color: #6d727b; font-weight: 600; }
.cover-meta dd { margin: 0; color: #111214; font-family: var(--font-mono); font-size: 9pt; }
.cover-band { position: absolute; left: 0; right: 0; bottom: 0; display: flex; align-items: center; justify-content: space-between; height: 26mm; padding: 0 20mm; color: #f3f4f0; background: #0b0b0f; font-size: 9pt; }
.cover-band b { color: #5c9dff; font-weight: 700; letter-spacing: .04em; }

.print-toc { break-after: page; font-family: var(--font-sans); }
.print-toc h2 { margin: 0 0 4mm; color: #111214; font-size: 22pt; letter-spacing: -.02em; }
.print-toc p { margin: 0 0 8mm; color: #4c515a; font-size: 9.5pt; }
.toc-group { margin: 0 0 4.2mm; break-inside: avoid; }
.toc-group > span { display: block; margin-bottom: 1.2mm; color: #1a56db; font-size: 7.6pt; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.toc-row { display: flex; align-items: baseline; gap: 2mm; padding: .7mm 0; color: #111214 !important; text-decoration: none !important; font-size: 10.4pt; font-weight: 600; }
.toc-row.sub { padding: .25mm 0 .25mm 6mm; color: #4c515a !important; font-size: 8.6pt; font-weight: 400; }
.toc-row .dots { flex: 1; min-width: 6mm; border-bottom: 1px dotted #b9bdb4; transform: translateY(-1mm); }
.toc-row .num { flex: 0 0 9mm; text-align: right; font-variant-numeric: tabular-nums; }