:root {
  --bg: #fbfaf7;
  --bg-soft: #f2f0ea;
  --fg: #1c1b1a;
  --fg-soft: #57534e;
  --line: #e2ded5;
  --accent: #5b3fd1;
  --accent-soft: #ece8fb;
  --code-bg: #f3f1ec;
  --code-fg: #24221f;
  --t-c: #7a756c;
  --t-s: #1f6f43;
  --t-k: #5b3fd1;
  --t-n: #a14d10;
  --warn-bg: #fff4e0;
  --warn-line: #e3a23b;
  --ph-bg: #ffe3a3;
  --ph-fg: #5a3b00;
  --radius: 10px;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131217;
    --bg-soft: #1b1a21;
    --fg: #ebe9f0;
    --fg-soft: #a7a3b3;
    --line: #2c2a35;
    --accent: #ab98ff;
    --accent-soft: #262040;
    --code-bg: #1b1a21;
    --code-fg: #e4e2ea;
    --t-c: #85818f;
    --t-s: #8fd4a6;
    --t-k: #b8a8ff;
    --t-n: #f0b07a;
    --warn-bg: #2a2214;
    --warn-line: #b7832d;
    --ph-bg: #5a4210;
    --ph-fg: #ffe1a0;
  }
}

:root[data-theme="dark"] {
  --bg: #131217;
  --bg-soft: #1b1a21;
  --fg: #ebe9f0;
  --fg-soft: #a7a3b3;
  --line: #2c2a35;
  --accent: #ab98ff;
  --accent-soft: #262040;
  --code-bg: #1b1a21;
  --code-fg: #e4e2ea;
  --t-c: #85818f;
  --t-s: #8fd4a6;
  --t-k: #b8a8ff;
  --t-n: #f0b07a;
  --warn-bg: #2a2214;
  --warn-line: #b7832d;
  --ph-bg: #5a4210;
  --ph-fg: #ffe1a0;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 72px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.65 var(--sans);
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 8px; z-index: 10; background: var(--bg); padding: 4px 8px; }

/* Header */

.top {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.top-in {
  max-width: 1200px; margin: 0 auto; padding: 0 16px;
  display: flex; align-items: center; gap: 20px; height: 56px;
}
.brand {
  display: flex; align-items: center; gap: 8px;
  font-weight: 650; color: var(--fg); text-decoration: none; white-space: nowrap;
}
.brand-mark {
  display: inline-grid; place-items: center;
  width: 26px; height: 26px; border-radius: 7px;
  background: var(--accent); color: var(--bg); font-size: 16px; line-height: 1;
}
.nav { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a {
  color: var(--fg-soft); text-decoration: none; padding: 6px 10px; border-radius: 6px;
  font-size: 15px; white-space: nowrap;
}
.nav a:hover { color: var(--fg); background: var(--bg-soft); }
.nav a[aria-current="page"] { color: var(--fg); background: var(--bg-soft); font-weight: 550; }
.top-tools { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.gh { color: var(--fg-soft); font-size: 15px; text-decoration: none; }
.gh:hover { color: var(--fg); }
.theme {
  display: grid; place-items: center; width: 34px; height: 34px;
  border: 1px solid var(--line); border-radius: 8px;
  background: transparent; color: var(--fg-soft); cursor: pointer;
}
.theme:hover { color: var(--fg); }
.theme svg:last-child { display: none; }
:root[data-theme="dark"] .theme svg:first-child { display: none; }
:root[data-theme="dark"] .theme svg:last-child { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme svg:first-child { display: none; }
  :root:not([data-theme="light"]) .theme svg:last-child { display: block; }
}

@media (max-width: 640px) {
  .top-in { flex-wrap: wrap; height: auto; padding-top: 8px; gap: 4px 12px; }
  .nav { order: 3; width: 100%; margin: 0 -10px; padding-bottom: 6px; }
  .gh { display: none; }
}

/* Layout */

.layout {
  max-width: 1200px; margin: 0 auto; padding: 0 16px;
}
main { min-width: 0; max-width: 46rem; margin: 0 auto; padding: 32px 0 48px; }
.home main { max-width: 52rem; }

@media (min-width: 1040px) {
  .has-toc main {
    max-width: none; display: grid; grid-template-columns: 240px minmax(0, 46rem);
    column-gap: 56px; justify-content: center; align-items: start;
  }
  .has-toc main > * { grid-column: 2; }
  .has-toc main > .toc {
    grid-column: 1; grid-row: 1 / span 4; position: sticky; top: 76px;
    max-height: calc(100vh - 96px); overflow: auto; padding-top: 4px;
  }
  .toc summary { pointer-events: none; list-style: none; }
  .toc summary::-webkit-details-marker { display: none; }
}

/* Table of contents */

.toc { font-size: 14.5px; }
.toc summary {
  cursor: pointer; font-size: 12px; font-weight: 650; letter-spacing: .06em;
  text-transform: uppercase; color: var(--fg-soft); padding: 4px 0 8px;
}
.toc ol { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.toc li a {
  display: block; padding: 5px 12px; margin-left: -1px; border-left: 2px solid transparent;
  color: var(--fg-soft); text-decoration: none; line-height: 1.4;
}
.toc li.l3 a { padding-left: 24px; font-size: 14px; }
.toc li a:hover { color: var(--fg); }
.toc li a.active { color: var(--accent); border-left-color: var(--accent); }

@media (max-width: 1039px) {
  .toc {
    margin: 16px 0 8px; border: 1px solid var(--line); border-radius: var(--radius);
    padding: 8px 14px; background: var(--bg-soft);
  }
  .toc summary { padding: 4px 0; }
  .toc ol { margin: 6px 0 6px; }
}

/* Page head */

.page-head { margin-bottom: 8px; }
.crumb { margin: 0 0 4px; font-size: 14px; }
.crumb a { color: var(--fg-soft); text-decoration: none; }
.crumb a::after { content: " /"; }
h1 {
  font-size: clamp(30px, 6vw, 40px); line-height: 1.15; letter-spacing: -.02em;
  margin: 0 0 12px; font-weight: 720;
}
.lede { font-size: 19px; color: var(--fg-soft); margin: 0 0 8px; }

/* Prose */

.prose h2 {
  font-size: 25px; line-height: 1.25; letter-spacing: -.01em; margin: 48px 0 12px;
  padding-top: 20px; border-top: 1px solid var(--line); font-weight: 680;
}
.prose > h2:first-child, .prose hr + h2, .hero + h2 { border-top: 0; padding-top: 0; }
.prose > h2:first-child, .hero + h2 { margin-top: 16px; }
.hero p { font-size: 19px; color: var(--fg-soft); max-width: 38rem; }
.prose h3 { font-size: 19.5px; margin: 32px 0 8px; font-weight: 650; }
.prose h4 { font-size: 17px; margin: 24px 0 6px; }
.prose p, .prose ul, .prose ol { margin: 0 0 16px; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin: 4px 0; }
.prose li > p { margin: 0 0 8px; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }
.prose blockquote {
  margin: 0 0 16px; padding: 2px 16px; border-left: 3px solid var(--line); color: var(--fg-soft);
}
.anchor {
  margin-left: 8px; color: var(--line); text-decoration: none; font-weight: 400; opacity: 0;
}
h2:hover .anchor, h3:hover .anchor, .anchor:focus { opacity: 1; }

code {
  font-family: var(--mono); font-size: .86em;
  background: var(--code-bg); border: 1px solid var(--line); border-radius: 5px;
  padding: .08em .35em; overflow-wrap: anywhere;
}
pre {
  position: relative; margin: 0 0 20px; padding: 14px 16px;
  background: var(--code-bg); color: var(--code-fg);
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow-x: auto; font-size: 14px; line-height: 1.55; tab-size: 4;
}
pre code { background: none; border: 0; padding: 0; font-size: inherit; overflow-wrap: normal; }
.t-c { color: var(--t-c); font-style: italic; }
.t-s { color: var(--t-s); }
.t-k { color: var(--t-k); }
.t-n { color: var(--t-n); }
mark.ph {
  background: var(--ph-bg); color: var(--ph-fg); border-radius: 4px; padding: 1px 4px;
  font-style: normal; font-weight: 600;
}

.copy {
  position: absolute; top: 8px; right: 8px;
  font: 600 12px/1 var(--sans); color: var(--fg-soft);
  background: var(--bg); border: 1px solid var(--line); border-radius: 6px;
  padding: 6px 8px; cursor: pointer; opacity: 0; transition: opacity .15s;
}
pre:hover .copy, .copy:focus-visible, .copy.done { opacity: 1; }
@media (hover: none) { .copy { opacity: 1; } }
.copy.done { color: var(--accent); }

.table { overflow-x: auto; margin: 0 0 20px; border: 1px solid var(--line); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 8px 12px; border-bottom: 1px solid var(--line); }
th { background: var(--bg-soft); font-weight: 600; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }

/* Boxes */

.note, .warning, .placeholder {
  margin: 0 0 20px; padding: 14px 16px 2px; border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--bg-soft);
}
.warning { background: var(--warn-bg); border-color: var(--warn-line); }
.placeholder { background: var(--warn-bg); border: 2px dashed var(--warn-line); }
.box-title { font-weight: 650; margin: 0 0 6px !important; }

.aside {
  display: grid; gap: 8px; margin: 4px 0 20px;
}
.aside-label {
  margin: 0 !important; font-size: 12px; font-weight: 650; letter-spacing: .06em;
  text-transform: uppercase; color: var(--fg-soft);
}
.aside a, .cards a {
  display: block; padding: 10px 14px; border: 1px solid var(--line); border-radius: var(--radius);
  text-decoration: none; color: var(--fg); background: var(--bg-soft);
}
.aside a:hover, .cards a:hover { border-color: var(--accent); }
.aside strong, .cards strong { display: block; color: var(--accent); font-weight: 620; }
.aside span, .cards span { display: block; color: var(--fg-soft); font-size: 15px; line-height: 1.45; }

.cards { list-style: none; padding: 0 !important; display: grid; gap: 10px; }
@media (min-width: 640px) { .cards { grid-template-columns: 1fr 1fr; } }

/* Home */

.hero { padding: 16px 0 8px; }
.hero h1 { font-size: clamp(32px, 7vw, 48px); max-width: 16ch; }
.hero .lede { max-width: 38rem; }

/* Steps are numbered 0, 1, 2 to match the bounty's wording. */
.quickstart { counter-reset: step -1; margin: 8px 0 28px; }
.step {
  counter-increment: step;
  display: grid; grid-template-columns: 36px minmax(0, 1fr); gap: 0 14px;
  padding: 18px 0; border-top: 1px solid var(--line);
}
.step:first-child { border-top: 0; }
.step::before {
  content: counter(step); grid-row: 1 / span 9;
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%;
  background: var(--accent); color: var(--bg); font-weight: 700; font-family: var(--mono);
}
.step > * { grid-column: 2; }
.step h3 { margin: 4px 0 8px; font-size: 19px; padding: 0; border: 0; }
.step p { margin: 0 0 8px; color: var(--fg-soft); }
.step pre { margin: 0 0 10px; }
.hero { border: 0; }
.hero h1 { margin-top: 8px; }

/* Pager and footer */

.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 48px; }
.pager a {
  display: block; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius);
  text-decoration: none; color: var(--fg); font-weight: 600;
}
.pager a:hover { border-color: var(--accent); }
.pager span { display: block; font-size: 13px; font-weight: 500; color: var(--fg-soft); }
.pager .next { grid-column: 2; text-align: right; }

.foot {
  border-top: 1px solid var(--line); color: var(--fg-soft); font-size: 14px;
  padding: 20px 16px 32px; text-align: center;
}
.foot p { margin: 4px 0; }
.foot a { color: inherit; }

@media (max-width: 640px) {
  body { font-size: 16.5px; }
  main { padding-top: 20px; }
  .prose h2 { font-size: 22px; margin-top: 40px; }
  pre { font-size: 13px; margin-left: -16px; margin-right: -16px; border-radius: 0; border-left: 0; border-right: 0; }
  .step pre { margin-left: 0; margin-right: 0; border-radius: var(--radius); border: 1px solid var(--line); }
  .step { grid-template-columns: 28px minmax(0, 1fr); gap: 0 10px; }
  .step::before { width: 28px; height: 28px; font-size: 14px; }
}

@media print {
  .top, .toc, .pager, .copy, .foot { display: none; }
}