:root {
  --bg: #fbfaf7;
  --bg-2: #f1efe9;
  --bg-code: #eeece5;
  --fg: #1f2422;
  --fg-2: #5a615d;
  --line: #ddd9cf;
  --accent: #226b5b;
  --accent-2: #2f8d78;
  --mark: #fff3c4;
  --top-h: 3.25rem;
  --toc-w: 18rem;
  --content-w: 46rem;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15191a;
    --bg-2: #1c2224;
    --bg-code: #222a2c;
    --fg: #e6e4de;
    --fg-2: #a3a9a5;
    --line: #2f3739;
    --accent: #6fcdb3;
    --accent-2: #8fdcc6;
    --mark: #4a4320;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font: 16px/1.6 var(--font);
  color: var(--fg);
  background: var(--bg);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.skip {
  position: absolute; left: -999px; top: 0; background: var(--accent); color: #fff; padding: .5rem 1rem; z-index: 50;
}
.skip:focus { left: .5rem; top: .5rem; }

/* top bar */
.top {
  position: sticky; top: 0; z-index: 20;
  height: var(--top-h);
  display: flex; align-items: center; gap: 1rem;
  padding: 0 1rem;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; color: var(--fg); letter-spacing: .01em; white-space: nowrap; }
.brand-sub { font-weight: 400; color: var(--fg-2); }
.docs { display: flex; gap: .25rem; margin-left: .5rem; overflow-x: auto; }
.docs a {
  color: var(--fg-2); padding: .3rem .6rem; border-radius: .4rem; white-space: nowrap; font-size: .92rem;
}
.docs a:hover { background: var(--bg-2); text-decoration: none; color: var(--fg); }
.docs a.active { color: var(--accent); background: var(--bg-2); font-weight: 600; }
.ext { margin-left: auto; font-size: .92rem; white-space: nowrap; }
.menu {
  display: none; width: 2.2rem; height: 2.2rem; border: 1px solid var(--line); border-radius: .4rem;
  background: var(--bg-2); cursor: pointer; padding: .45rem .5rem; flex-direction: column; justify-content: space-between;
}
.menu span { display: block; height: 2px; background: var(--fg); border-radius: 1px; }

/* layout */
.layout { display: flex; align-items: flex-start; max-width: calc(var(--toc-w) + var(--content-w) + 8rem); margin: 0 auto; }
.toc {
  width: var(--toc-w); flex: none;
  position: sticky; top: var(--top-h);
  max-height: calc(100vh - var(--top-h));
  overflow-y: auto;
  padding: 1.25rem 1rem 2rem 1.25rem;
  font-size: .88rem;
  border-right: 1px solid var(--line);
}
.toc-title { margin: 0 0 .5rem; font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; color: var(--fg-2); }
.toc ul { list-style: none; margin: 0; padding: 0; }
.toc ul ul { padding-left: .85rem; border-left: 1px solid var(--line); margin: .1rem 0 .25rem .35rem; }
.toc li { margin: 0; }
.toc a {
  display: block; padding: .22rem .4rem; border-radius: .3rem; color: var(--fg-2); line-height: 1.35;
}
.toc a:hover { color: var(--fg); background: var(--bg-2); text-decoration: none; }
.toc a.active { color: var(--accent); font-weight: 600; background: var(--bg-2); }
.backdrop { display: none; }

.content { flex: 1 1 auto; min-width: 0; padding: 1.5rem 2.5rem 4rem; }
.markdown { max-width: var(--content-w); }
.foot { max-width: var(--content-w); margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--fg-2); font-size: .88rem; }
.loading { color: var(--fg-2); }
.noscript { padding: 1rem 2rem; }

/* markdown */
.markdown h1 { font-size: 2.1rem; line-height: 1.15; margin: .5rem 0 1rem; letter-spacing: -.01em; }
.markdown h2 { font-size: 1.5rem; line-height: 1.25; margin: 2.6rem 0 .8rem; padding-top: .6rem; border-top: 1px solid var(--line); }
.markdown h3 { font-size: 1.15rem; margin: 1.9rem 0 .6rem; }
.markdown h4 { font-size: 1rem; margin: 1.4rem 0 .5rem; }
.markdown h1, .markdown h2, .markdown h3, .markdown h4 { scroll-margin-top: calc(var(--top-h) + .75rem); position: relative; }
.markdown h2 .anchor, .markdown h3 .anchor, .markdown h4 .anchor {
  position: absolute; left: -1.3rem; top: 0; color: var(--fg-2); opacity: 0; font-weight: 400; text-decoration: none;
}
.markdown h2:hover .anchor, .markdown h3:hover .anchor, .markdown h4:hover .anchor { opacity: .7; }
.markdown h2 .anchor { top: .6rem; }
.markdown p { margin: 0 0 1rem; }
.markdown h1 + p { font-size: 1.05rem; color: var(--fg-2); }
.markdown h2:first-of-type + p, .markdown .tldr { }
.markdown ul, .markdown ol { padding-left: 1.4rem; margin: 0 0 1rem; }
.markdown li { margin: .25rem 0; }
.markdown li > p { margin: 0 0 .5rem; }
.markdown code {
  font-family: var(--mono); font-size: .88em;
  background: var(--bg-code); padding: .1em .35em; border-radius: .3em;
}
.markdown pre {
  font-family: var(--mono); font-size: .84rem; line-height: 1.45;
  background: var(--bg-code); border: 1px solid var(--line); border-radius: .5rem;
  padding: .9rem 1rem; overflow-x: auto; margin: 0 0 1.2rem;
}
.markdown pre code { background: none; padding: 0; font-size: inherit; }
.markdown blockquote { margin: 0 0 1rem; padding: .2rem 1rem; border-left: 3px solid var(--accent); color: var(--fg-2); }
.markdown hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }
.markdown img { max-width: 100%; }
.markdown strong { font-weight: 650; }
.table-wrap { overflow-x: auto; margin: 0 0 1.2rem; border: 1px solid var(--line); border-radius: .5rem; }
.markdown table { border-collapse: collapse; width: 100%; font-size: .92rem; }
.markdown th, .markdown td { text-align: left; vertical-align: top; padding: .5rem .7rem; border-bottom: 1px solid var(--line); }
.markdown th { background: var(--bg-2); font-weight: 650; white-space: nowrap; }
.markdown tr:last-child td { border-bottom: 0; }
.markdown td code, .markdown th code { white-space: nowrap; }
.markdown td:first-child { white-space: nowrap; }
.markdown .tldr-box {
  background: var(--bg-2); border: 1px solid var(--line); border-left: 4px solid var(--accent);
  border-radius: .5rem; padding: 1rem 1.2rem; margin: 0 0 1.5rem;
}
.markdown .tldr-box h2 { margin: 0 0 .5rem; padding: 0; border: 0; font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; color: var(--accent); }
.markdown .tldr-box p:last-child { margin: 0; }
.markdown .measured { font-size: .9rem; color: var(--fg-2); }
mark { background: var(--mark); color: inherit; }

/* figures */
.fig { margin: 1.4rem 0 1.8rem; }
.fig-svg svg { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: .5rem; }
.fig figcaption { font-size: .86rem; color: var(--fg-2); margin-top: .5rem; }
.fig-note { font-size: .86rem; min-height: 2.4em; margin: .5rem 0 0; padding: .5rem .8rem; border-left: 3px solid var(--accent); background: var(--bg-2); border-radius: 0 .4rem .4rem 0; color: var(--fg); }
.fig-note.pinned { border-left-color: var(--accent-2); }
.fig svg .f-bg { fill: var(--bg-2); }
.fig svg .f-box { fill: var(--bg); stroke: var(--line); }
.fig svg .f-box.acc { fill: color-mix(in srgb, var(--accent) 14%, var(--bg)); stroke: var(--accent); }
.fig svg .f-box.warn { fill: color-mix(in srgb, #c0504d 14%, var(--bg)); stroke: #c0504d; }
.fig svg .f-box.mut { fill: color-mix(in srgb, var(--fg-2) 10%, var(--bg)); }
.fig svg .f-t, .fig svg .f-m { fill: var(--fg); }
.fig svg .f-t.s, .fig svg .f-m.s { fill: var(--fg-2); }
.fig svg .f-t.acc, .fig svg .f-m.acc, .fig svg tspan.acc { fill: var(--accent); }
.fig svg .f-ar { stroke: var(--fg-2); }
.fig svg .f-ar.acc { stroke: var(--accent); }
.fig svg .f-ar.thin { stroke: var(--line); }
.fig svg .f-ln { stroke: var(--line); }
.fig svg marker path { fill: var(--fg-2); }
.fig svg #f-ah2 path { fill: var(--accent); }
.fig svg .f-hot { outline: none; }
.fig svg .f-hot:hover > rect, .fig svg .f-hot.on > rect, .fig svg .f-hot:focus > rect { stroke: var(--accent); stroke-width: 2; }
.fig svg tspan.f-hot { text-decoration: underline dotted; text-underline-offset: 3px; }
.fig svg tspan.f-hot:hover, .fig svg tspan.f-hot.on { fill: var(--accent); font-weight: 700; }
.fig svg .step-on > rect { stroke: var(--accent); stroke-width: 2.5; }
.fig svg .step-on { filter: drop-shadow(0 0 3px color-mix(in srgb, var(--accent) 60%, transparent)); }

/* steppers */
.stepper { margin-top: .8rem; border: 1px solid var(--line); border-radius: .5rem; padding: .8rem 1rem; background: var(--bg-2); }
.stepper:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
.stepper-intro { margin: 0 0 .6rem; font-size: .88rem; color: var(--fg-2); }
.stepper-head { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
.stepper-btn { font: inherit; font-size: .86rem; padding: .3rem .7rem; border: 1px solid var(--line); border-radius: .4rem; background: var(--bg); color: var(--fg); cursor: pointer; }
.stepper-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.stepper-btn:disabled { opacity: .4; cursor: default; }
.stepper-title { font-weight: 650; }
.stepper-count { font-size: .82rem; color: var(--fg-2); margin-left: auto; }
.stepper-panels { display: flex; gap: .6rem; margin: .8rem 0; overflow-x: auto; }
.stepper-panels:empty { display: none; }
.stk { flex: 1 1 0; min-width: 7rem; background: var(--bg); border: 1px solid var(--line); border-radius: .4rem; padding: .4rem; display: flex; flex-direction: column; gap: .25rem; }
.stk-name { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--fg-2); padding: 0 .2rem .2rem; }
.stk-cell { font-family: var(--mono); font-size: .82rem; padding: .3rem .5rem; border: 1px solid var(--line); border-radius: .3rem; background: var(--bg-2); }
.stk-cell.top { border-color: var(--accent); }
.stk-cell.fresh { background: color-mix(in srgb, var(--accent) 16%, var(--bg)); }
.stk-empty { font-size: .8rem; color: var(--fg-2); padding: .3rem .5rem; font-style: italic; }
.stepper-note { margin: 0; font-size: .92rem; }
.stepper-gas { margin: .4rem 0 0; font-family: var(--mono); font-size: .82rem; color: var(--accent); }

/* typed value tabs */
.tv { border: 1px solid var(--line); border-radius: .5rem; padding: .8rem 1rem; background: var(--bg-2); }
.tv-tabs { display: flex; flex-wrap: wrap; gap: .35rem; }
.tv-tab { font-family: var(--mono); font-size: .8rem; padding: .25rem .55rem; border: 1px solid var(--line); border-radius: .35rem; background: var(--bg); color: var(--fg); cursor: pointer; }
.tv-tab.on { border-color: var(--accent); color: var(--accent); font-weight: 700; }
.tv-cells { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin: .8rem 0 .6rem; }
.tv-cell { background: var(--bg); border: 1px solid var(--accent); border-radius: .4rem; padding: .5rem .7rem; min-height: 5.2rem; }
.tv-cell.idle { border-color: var(--line); opacity: .75; }
.tv-k { font-weight: 700; color: var(--accent); }
.tv-cell.idle .tv-k { color: var(--fg-2); }
.tv-v { font-family: var(--mono); font-size: .84rem; margin: .25rem 0; word-break: break-word; }
.tv-d { font-size: .78rem; color: var(--fg-2); }
.tv-why { margin: 0; font-size: .9rem; }
@media (max-width: 600px) { .tv-cells { grid-template-columns: 1fr; } }

/* mobile */
@media (max-width: 900px) {
  .menu { display: flex; }
  .docs { display: none; }
  .toc {
    position: fixed; left: 0; top: var(--top-h); bottom: 0; z-index: 30;
    background: var(--bg); max-height: none;
    transform: translateX(-100%); transition: transform .2s ease;
    box-shadow: 0 0 0 1px var(--line);
  }
  body.toc-open .toc { transform: none; }
  body.toc-open .backdrop { display: block; position: fixed; inset: var(--top-h) 0 0 0; background: rgba(0,0,0,.35); z-index: 25; }
  .content { padding: 1rem 1.1rem 3rem; }
  .markdown h1 { font-size: 1.7rem; }
  .markdown h2 .anchor, .markdown h3 .anchor, .markdown h4 .anchor { display: none; }
}
@media print {
  .top, .toc, .backdrop { display: none; }
  .content { padding: 0; }
  .markdown { max-width: none; }
  a { color: inherit; }
}