:root {
  --canvas: #f6f8f7;
  --panel: #ffffff;
  --rail: #242a27;
  --rail-soft: #303733;
  --ink: #202522;
  --muted: #66706a;
  --line: #d7ddda;
  --line-dark: #b6c0ba;
  --green: #167044;
  --green-dark: #0d5331;
  --green-pale: #e3f0e8;
  --code: #c7f2d9;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --rail-width: 244px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--canvas); color: var(--ink); font-family: var(--sans); font-size: 15px; line-height: 1.55; letter-spacing: 0; }
a { color: inherit; }
.skip-link { position: fixed; left: 12px; top: -56px; z-index: 100; padding: 8px 12px; background: var(--panel); color: var(--ink); border: 2px solid var(--green); font: 600 13px/1.2 var(--sans); }
.skip-link:focus { top: 12px; }

.doc-rail { position: fixed; inset: 0 auto 0 0; z-index: 20; width: var(--rail-width); display: flex; flex-direction: column; background: var(--rail); color: #eef3f0; border-right: 1px solid #111512; }
.rail-brand { display: grid; grid-template-columns: 38px 1fr; gap: 10px; align-items: center; min-height: 78px; padding: 16px 18px; border-bottom: 1px solid #3d4641; text-decoration: none; }
.rail-mark { display: grid; place-items: center; width: 38px; height: 38px; background: var(--green); color: #fff; border: 1px solid #64a47e; font: 700 13px/1 var(--mono); }
.rail-brand b { display: block; font-size: 15px; line-height: 1.2; }
.rail-brand small { display: block; margin-top: 3px; color: #aab6af; font: 10px/1.2 var(--mono); }
.rail-nav { padding: 18px 12px; }
.rail-label { margin: 0 8px 8px; color: #829188; font: 10px/1.4 var(--mono); text-transform: uppercase; }
.rail-nav a { display: flex; align-items: center; gap: 9px; padding: 8px 10px; color: #d8e0db; text-decoration: none; border-left: 2px solid transparent; font-size: 13px; }
.rail-nav a::before { content: "::"; color: #75ba91; font: 10px/1 var(--mono); }
.rail-nav a:hover, .rail-nav a:focus-visible, .rail-nav a[aria-current="page"] { background: var(--rail-soft); color: #fff; border-color: #77c596; }
.rail-meta { margin-top: auto; padding: 15px 18px 18px; border-top: 1px solid #3d4641; color: #aab6af; font: 10px/1.65 var(--mono); }
.rail-meta strong { color: var(--code); font-weight: 500; }

.page-shell { min-height: 100vh; margin-left: var(--rail-width); }
.doc-topbar { min-height: 42px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 0 32px; background: #edf1ef; border-bottom: 1px solid var(--line); color: var(--muted); font: 11px/1 var(--mono); }
.doc-topbar span:last-child { color: var(--green-dark); }
.content-wrap { width: min(1040px, calc(100% - 64px)); margin-inline: auto; }

.doc-intro { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 48px; align-items: start; padding-block: 52px 44px; border-bottom: 1px solid var(--line); }
.breadcrumb { margin: 0 0 14px; color: var(--green); font: 11px/1.4 var(--mono); }
.doc-intro h1 { max-width: 720px; margin: 0; color: var(--ink); font-size: clamp(34px, 4vw, 48px); line-height: 1.08; font-weight: 650; }
.doc-intro .dek { max-width: 720px; margin: 18px 0 0; color: #4f5953; font-size: 17px; line-height: 1.65; }
.version-box { border: 1px solid var(--line-dark); background: var(--panel); }
.version-box header { display: flex; justify-content: space-between; gap: 18px; padding: 9px 12px; background: #e9eeeb; border-bottom: 1px solid var(--line-dark); font: 10px/1.2 var(--mono); }
.version-box dl { display: grid; grid-template-columns: 1fr auto; gap: 0; margin: 0; font: 11px/1.35 var(--mono); }
.version-box dt, .version-box dd { margin: 0; padding: 9px 12px; border-bottom: 1px solid #e5e9e7; }
.version-box dt { color: var(--muted); }
.version-box dd { color: var(--green-dark); text-align: right; }
.version-box p { margin: 0; padding: 10px 12px; background: var(--rail); color: var(--code); font: 10px/1.4 var(--mono); }
.version-box p::before { content: "$ "; color: #fff; }

.doc-section { padding-block: 36px 56px; }
.section-head { display: grid; grid-template-columns: 1fr minmax(280px, .7fr); gap: 36px; align-items: end; margin-bottom: 20px; }
.eyebrow { margin: 0 0 6px; color: var(--green); font: 10px/1.4 var(--mono); text-transform: uppercase; }
.section-head h2, .method h2 { margin: 0; font-size: 25px; line-height: 1.2; font-weight: 650; }
.section-head > p { margin: 0; color: var(--muted); font-size: 13px; }
.drawers { background: var(--panel); border: 1px solid var(--line-dark); }
.drawers details + details { border-top: 1px solid var(--line); }
.drawers summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: 1fr auto auto; gap: 18px; align-items: center; min-height: 58px; padding: 10px 14px; }
.drawers summary::-webkit-details-marker { display: none; }
.drawers summary:hover { background: #f1f5f3; }
.drawers summary > span { display: grid; grid-template-columns: minmax(190px, .55fr) 1fr; gap: 22px; align-items: baseline; }
.drawers summary b { font-size: 14px; font-weight: 650; }
.drawers summary small { color: var(--muted); font-size: 12px; }
.drawers summary strong { min-width: 28px; color: var(--green-dark); font: 700 11px/1 var(--mono); text-align: right; }
.drawers summary::after { content: "[+]"; color: var(--green); font: 10px/1 var(--mono); }
.drawers details[open] summary { background: #edf4f0; border-bottom: 1px solid var(--line); }
.drawers details[open] summary::after { content: "[-]"; }
.entry-list { counter-reset: notes; list-style: none; margin: 0; padding: 0 14px 8px 46px; }
.entry-list li { counter-increment: notes; position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 92px; gap: 20px; align-items: baseline; min-height: 42px; padding: 10px 0; border-bottom: 1px dotted var(--line-dark); }
.entry-list li:last-child { border-bottom: 0; }
.entry-list li::before { content: counter(notes, decimal-leading-zero); position: absolute; right: calc(100% + 12px); top: 13px; color: var(--green); font: 10px/1 var(--mono); }
.entry-list a { font-size: 13px; line-height: 1.45; text-decoration: none; }
.entry-list a:hover, .entry-list a:focus-visible { color: var(--green-dark); text-decoration: underline; text-underline-offset: 3px; }
.entry-list li > span { color: #7b847f; font: 9px/1.3 var(--mono); text-align: right; text-transform: uppercase; }
.index-link { display: flex; justify-content: flex-end; margin-top: 14px; }
.index-link a { color: var(--green-dark); font: 600 11px/1.4 var(--mono); text-underline-offset: 4px; }

.method { display: grid; grid-template-columns: 230px 1fr; gap: 44px; padding-block: 34px 54px; border-top: 1px solid var(--line); }
.method-copy { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.method-copy p { margin: 0; color: #4f5953; font-size: 13px; line-height: 1.7; }
.doc-footer { border-top: 1px solid var(--line); background: #edf1ef; }
.doc-footer .content-wrap { min-height: 64px; display: flex; justify-content: space-between; gap: 24px; align-items: center; color: var(--muted); font: 10px/1.4 var(--mono); }
.doc-footer a { color: var(--green-dark); }

.index-page .doc-intro { padding-block: 42px 34px; }
.index-page .doc-intro h1 { font-size: clamp(32px, 4vw, 43px); }
.az-index { padding-block: 34px 56px; }
.index-table { background: var(--panel); border: 1px solid var(--line-dark); }
.index-table ol { list-style: none; counter-reset: fullindex; margin: 0; padding: 0; }
.index-table li { counter-increment: fullindex; display: grid; grid-template-columns: 38px minmax(0, 1fr) 120px; gap: 14px; align-items: baseline; min-height: 44px; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.index-table li:last-child { border-bottom: 0; }
.index-table li::before { content: counter(fullindex, decimal-leading-zero); color: var(--green); font: 10px/1 var(--mono); }
.index-table a { font-size: 13px; line-height: 1.45; text-decoration: none; }
.index-table a:hover, .index-table a:focus-visible { color: var(--green-dark); text-decoration: underline; text-underline-offset: 3px; }
.index-table span { color: #7b847f; font: 9px/1.3 var(--mono); text-align: right; text-transform: uppercase; }

@media (max-width: 820px) {
  .doc-rail { position: static; width: 100%; min-height: 0; display: grid; grid-template-columns: 1fr auto; }
  .rail-brand { min-height: 62px; padding: 11px 15px; border-bottom: 0; }
  .rail-mark { width: 34px; height: 34px; }
  .rail-nav { display: flex; align-items: center; gap: 4px; padding: 9px 10px; }
  .rail-label, .rail-meta { display: none; }
  .rail-nav a { padding: 8px; border-left: 0; border-bottom: 2px solid transparent; font-size: 11px; }
  .rail-nav a::before { display: none; }
  .rail-nav a:hover, .rail-nav a:focus-visible, .rail-nav a[aria-current="page"] { border-bottom-color: #77c596; }
  .page-shell { margin-left: 0; }
  .doc-topbar { padding-inline: 16px; }
  .content-wrap { width: min(100% - 30px, 1040px); }
  .doc-intro { grid-template-columns: 1fr; gap: 24px; padding-block: 34px 28px; }
  .doc-intro h1 { font-size: 34px; }
  .doc-intro .dek { font-size: 15px; }
  .version-box { max-width: 420px; }
  .section-head { grid-template-columns: 1fr; gap: 8px; }
  .drawers summary > span { grid-template-columns: 1fr; gap: 2px; }
  .entry-list { padding-left: 40px; }
  .entry-list li { grid-template-columns: 1fr; gap: 4px; }
  .entry-list li > span { text-align: left; }
  .method { grid-template-columns: 1fr; gap: 16px; }
  .method-copy { grid-template-columns: 1fr; }
  .index-table li { grid-template-columns: 28px minmax(0, 1fr); gap: 8px; }
  .index-table span { grid-column: 2; text-align: left; }
}

@media (max-width: 480px) {
  .doc-rail { grid-template-columns: 1fr; }
  .rail-nav { border-top: 1px solid #3d4641; }
  .rail-nav a { flex: 1; justify-content: center; }
  .doc-topbar span:last-child { display: none; }
  .doc-intro h1 { font-size: 30px; }
  .drawers summary { gap: 10px; padding-inline: 10px; }
  .drawers summary small { font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }