/* docs.opennodd.com */
@font-face { font-family: 'Inter'; src: url('/inter.woff2') format('woff2'); font-weight: 100 900; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('/jetbrains-mono.woff2') format('woff2'); font-weight: 100 800; font-display: swap; }

:root {
  --bg: #0d0e10; --bg-soft: #141619; --raised: #1a1c20; --line: #24272c; --line-soft: #1c1f23;
  --ink: #eceef1; --text: #c9ced6; --muted: #8a919c;
  --accent: #5af0b8; --accent-ink: #04140d; --accent-soft: rgba(90, 240, 184, 0.1);
  --tip: #5af0b8; --note: #7aa7ff; --warning: #ffb85c; --caution: #ff7a7a;
  --code-bg: #121418; --logo-face: #0b0c0e;
  --sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  --top: 64px;
  color-scheme: dark;
}
:root[data-theme='light'] {
  --bg: #ffffff; --bg-soft: #f6f7f8; --raised: #ffffff; --line: #e4e6ea; --line-soft: #eef0f2;
  --ink: #111317; --text: #3a3f47; --muted: #6b7280;
  --accent: #067a55; --accent-ink: #ffffff; --accent-soft: rgba(6, 122, 85, 0.08);
  --tip: #067a55; --note: #2f5fd0; --warning: #a35c00; --caution: #c0392b;
  --code-bg: #f6f7f8; --logo-face: #ffffff;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-padding-top: calc(var(--top) + 24px); -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.7 var(--sans); }
body::before { content: ''; position: fixed; inset: 0 0 auto 0; height: 480px; pointer-events: none; z-index: -1;
  background: radial-gradient(50% 70% at 70% 0%, var(--accent-soft), transparent 70%); }
a { color: inherit; }
svg { width: 18px; height: 18px; flex: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 12px; z-index: 50; background: var(--accent); color: var(--accent-ink); padding: 8px 12px; border-radius: 8px; }
kbd { font: 500 11px var(--sans); color: var(--muted); border: 1px solid var(--line); border-radius: 6px; padding: 2px 6px; }

/* ---- top bar ---- */
.top { position: sticky; top: 0; z-index: 20; height: var(--top); display: flex; align-items: center; gap: 12px; padding: 0 24px;
  background: color-mix(in srgb, var(--bg) 85%, transparent); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line-soft); }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; margin-right: auto; }
.brand svg { width: 28px; height: 28px; }
.brand b { color: var(--ink); font-size: 18px; letter-spacing: -0.01em; }
.brand span { color: var(--muted); font-size: 14px; margin-left: 4px; }
.search-btn { display: flex; align-items: center; gap: 10px; width: min(380px, 32vw); height: 38px; padding: 0 8px 0 12px; margin-right: auto;
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 10px; color: var(--muted); font: 14px var(--sans); cursor: pointer; }
.search-btn span { flex: 1; text-align: left; }
.search-btn:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }
.top-links { display: flex; align-items: center; gap: 20px; font-size: 14px; }
.top-links a { text-decoration: none; color: var(--text); }
.top-links a:hover { color: var(--ink); }
.top-links .icon svg { width: 20px; height: 20px; display: block; }
.icon-btn { display: grid; place-items: center; width: 36px; height: 36px; border: 0; background: none; color: var(--text); border-radius: 8px; cursor: pointer; }
.icon-btn:hover { background: var(--bg-soft); color: var(--ink); }
.i-sun { display: none; }
:root[data-theme='light'] .i-sun { display: block; } :root[data-theme='light'] .i-moon { display: none; }
.menu-btn, .search-mobile { display: none; }

/* ---- three columns ---- */
.shell { display: grid; grid-template-columns: 280px minmax(0, 1fr) 240px; max-width: 1480px; margin: 0 auto; }
.sidebar { position: sticky; top: var(--top); height: calc(100dvh - var(--top)); overflow-y: auto; padding: 24px 16px 48px 24px; scrollbar-width: thin; }
.nav-group { margin-bottom: 18px; }
.nav-group summary { display: flex; align-items: center; justify-content: space-between; list-style: none; cursor: pointer;
  padding: 6px 10px; font-size: 13px; font-weight: 500; color: var(--muted); }
.nav-group summary::-webkit-details-marker { display: none; }
.nav-group summary svg { width: 14px; height: 14px; transition: transform 0.15s; }
.nav-group:not([open]) summary svg { transform: rotate(-90deg); }
.nav-group ul { list-style: none; margin: 4px 0 0; padding: 0; }
.nav-group a { display: block; padding: 7px 10px; border-radius: 8px; text-decoration: none; font-size: 15px; line-height: 1.4; color: var(--text); }
.nav-group a:hover { color: var(--ink); background: var(--bg-soft); }
.nav-group a.active { color: var(--accent); background: var(--accent-soft); font-weight: 600; }

main { min-width: 0; padding: 40px clamp(20px, 4vw, 64px) 64px; max-width: 840px; width: 100%; justify-self: center; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 28px; }
.crumbs { display: flex; gap: 8px; font-size: 13px; color: var(--muted); flex-wrap: wrap; }
.crumbs [aria-current] { color: var(--text); }
.copy-page { position: relative; display: flex; border: 1px solid var(--line); border-radius: 10px; background: var(--bg-soft); flex: none; }
.copy-page button { display: flex; align-items: center; gap: 8px; height: 34px; padding: 0 12px; border: 0; background: none; color: var(--text); font: 500 13px var(--sans); cursor: pointer; }
.copy-page button:hover { color: var(--ink); }
.copy-page svg { width: 15px; height: 15px; }
.copy-page .more { border-left: 1px solid var(--line); padding: 0 9px; }
.copy-page .done { color: var(--accent); }
.copy-menu { position: absolute; right: 0; top: calc(100% + 6px); z-index: 10; width: 260px; padding: 6px; background: var(--raised); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35); }
.copy-menu a { display: block; padding: 8px 10px; border-radius: 8px; text-decoration: none; font-size: 14px; color: var(--ink); line-height: 1.35; }
.copy-menu a:hover { background: var(--bg-soft); }
.copy-menu small { display: block; color: var(--muted); font-size: 12px; }
.eyebrow { margin: 0 0 6px; color: var(--accent); font-size: 14px; font-weight: 500; }
h1 { margin: 0 0 14px; color: var(--ink); font-size: clamp(30px, 4vw, 40px); line-height: 1.15; letter-spacing: -0.025em; font-weight: 700; }
.lead { margin: 0 0 36px; font-size: 18px; color: var(--text); }

/* ---- page content ---- */
.prose { color: var(--text); }
.prose h2, .prose h3, .prose h4 { position: relative; color: var(--ink); letter-spacing: -0.015em; line-height: 1.3; }
.prose h2 { font-size: 24px; margin: 52px 0 14px; font-weight: 650; }
.prose h3 { font-size: 19px; margin: 36px 0 10px; font-weight: 600; }
.prose h4 { font-size: 16px; margin: 28px 0 8px; }
.anchor { position: absolute; left: -1.1em; padding-right: 0.3em; color: var(--muted); text-decoration: none; opacity: 0; font-weight: 400; }
.prose :is(h2, h3, h4):hover .anchor, .anchor:focus { opacity: 1; }
.prose p, .prose ul, .prose ol { margin: 0 0 16px; }
.prose li { margin: 6px 0; }
.prose li::marker { color: var(--muted); }
.prose a { color: var(--accent); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent); text-underline-offset: 3px; }
.prose a:hover { text-decoration-color: var(--accent); }
.prose strong { color: var(--ink); font-weight: 600; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }
.prose :not(pre) > code { font: 0.86em var(--mono); font-variant-ligatures: none; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 6px; padding: 0.1em 0.4em; color: var(--ink); overflow-wrap: anywhere; }
.prose blockquote { margin: 0 0 16px; padding: 2px 16px; border-left: 3px solid var(--line); color: var(--muted); }
.code { margin: 0 0 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--code-bg); overflow: hidden; }
.code-bar { display: flex; align-items: center; justify-content: space-between; padding: 8px 8px 0 14px; }
.code-bar span { font: 500 11px var(--sans); color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.code .copy { display: grid; place-items: center; width: 30px; height: 30px; border: 0; border-radius: 7px; background: none; color: var(--muted); cursor: pointer; }
.code .copy:hover { color: var(--ink); background: var(--bg-soft); }
.code .copy.done { color: var(--accent); }
.code pre { margin: 0; padding: 8px 16px 16px; overflow-x: auto; }
.code code { font: 13.5px/1.65 var(--mono); color: var(--ink); font-variant-ligatures: none; }
.callout { display: flex; gap: 14px; margin: 0 0 20px; padding: 16px 18px; border-radius: 14px; background: var(--bg-soft); border: 1px solid var(--line-soft); }
.callout > svg { width: 20px; height: 20px; margin-top: 3px; }
.callout > div { min-width: 0; }
.callout p:last-child, .callout ul:last-child { margin-bottom: 0; }
.callout-title { margin: 0 0 4px !important; color: var(--ink); font-weight: 600; }
.callout.tip > svg { color: var(--tip); } .callout.note > svg, .callout.important > svg { color: var(--note); }
.callout.warning > svg { color: var(--warning); } .callout.caution > svg { color: var(--caution); }
.table-wrap { margin: 0 0 20px; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; }
.prose table { width: 100%; border-collapse: collapse; font-size: 14px; }
.prose th, .prose td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.prose th { color: var(--ink); font-weight: 600; background: var(--bg-soft); }
.prose tr:last-child td { border-bottom: 0; }

.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 56px; }
.pager a { display: block; padding: 14px 18px; border: 1px solid var(--line); border-radius: 12px; text-decoration: none; color: var(--ink); font-weight: 500; }
.pager a:hover { border-color: var(--accent); }
.pager small { display: block; color: var(--muted); font-size: 13px; font-weight: 400; }
.pager .next { text-align: right; }
.foot { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line-soft); font-size: 13px; color: var(--muted); }
.foot a { color: var(--muted); }

/* ---- on this page ---- */
.toc { position: sticky; top: var(--top); height: calc(100dvh - var(--top)); overflow-y: auto; padding: 40px 24px 40px 8px; font-size: 13px; }
.toc p { display: flex; align-items: center; gap: 8px; margin: 0 0 10px; color: var(--text); }
.toc p svg { width: 15px; height: 15px; }
.toc ul, .toc-mobile ul { list-style: none; margin: 0; padding: 0; }
.toc a { display: block; padding: 6px 10px; border-radius: 8px; color: var(--muted); text-decoration: none; line-height: 1.4; }
.toc a:hover { color: var(--ink); }
.toc a.on { color: var(--ink); background: var(--bg-soft); }
.toc .d3 a { padding-left: 22px; }
.toc-mobile { display: none; }

/* ---- search ---- */
.search { position: fixed; inset: 0; z-index: 40; display: flex; justify-content: center; align-items: flex-start; padding: 12vh 16px 16px; background: rgba(0, 0, 0, 0.55); backdrop-filter: blur(2px); }
.search[hidden] { display: none; }
.search-box { width: min(640px, 100%); max-height: 70vh; display: flex; flex-direction: column; background: var(--raised); border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45); overflow: hidden; }
.search-input { display: flex; align-items: center; gap: 10px; padding: 0 14px; border-bottom: 1px solid var(--line); color: var(--muted); }
.search-input input { flex: 1; min-width: 0; height: 54px; border: 0; background: none; color: var(--ink); font: 16px var(--sans); outline: none; }
.search-input input::-webkit-search-cancel-button { display: none; }
.search-results { list-style: none; margin: 0; padding: 8px; overflow-y: auto; }
.search-results a { display: block; padding: 10px 12px; border-radius: 10px; text-decoration: none; color: var(--ink); }
.search-results a.on, .search-results a:hover { background: var(--accent-soft); }
.search-results small { display: block; color: var(--muted); font-size: 12px; }
.search-results b { font-weight: 600; font-size: 15px; }
.search-results span { display: block; color: var(--text); font-size: 13px; line-height: 1.5; margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.search-results .none { padding: 24px; text-align: center; color: var(--muted); }
body.searching { overflow: hidden; }

/* ---- smaller screens ---- */
@media (max-width: 1180px) {
  .shell { grid-template-columns: 260px minmax(0, 1fr); }
  .toc { display: none; }
  .toc-mobile { display: block; margin: -16px 0 24px; border-bottom: 1px solid var(--line-soft); }
  .toc-mobile summary { display: flex; align-items: center; gap: 10px; padding: 12px 0; list-style: none; cursor: pointer; font-size: 14px; color: var(--text); }
  .toc-mobile summary::-webkit-details-marker { display: none; }
  .toc-mobile summary svg { width: 16px; height: 16px; }
  .toc-mobile summary span { margin-left: auto; color: var(--muted); max-width: 50%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .toc-mobile ul { padding-bottom: 12px; }
  .toc-mobile a { display: block; padding: 6px 0; font-size: 14px; color: var(--muted); text-decoration: none; }
  .toc-mobile .d3 a { padding-left: 14px; }
}
@media (max-width: 860px) {
  .top { padding: 0 8px 0 16px; gap: 4px; }
  .search-btn, .top-links { display: none; }
  .menu-btn, .search-mobile { display: grid; }
  .shell { display: block; }
  .sidebar { position: fixed; inset: var(--top) 0 0 0; z-index: 15; height: auto; background: var(--bg); padding: 16px; display: none; }
  body.menu-open { overflow: hidden; }
  body.menu-open .sidebar { display: block; }
  main { padding: 24px 16px 48px; }
  .page-head { margin-bottom: 20px; }
  .copy-page .more { display: none; }
  .pager { grid-template-columns: 1fr; }
  .anchor { display: none; }
}
@media (max-width: 420px) {
  .copy-page button span { display: none; }
}