:root {
  color-scheme: dark;
  --bg: #0b1117;
  --bg-soft: #101820;
  --panel: #121d26;
  --panel-strong: #172630;
  --line: #24333e;
  --line-soft: #1b2933;
  --ink: #ecf2f4;
  --muted: #91a3ad;
  --faint: #5f747e;
  --teal: #79e1d5;
  --teal-deep: #277d7c;
  --orange: #f3b47f;
  --orange-deep: #985d3a;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
}

[data-theme='light'] {
  color-scheme: light;
  --bg: #f3f6f3;
  --bg-soft: #e9efeb;
  --panel: #ffffff;
  --panel-strong: #e3ece7;
  --line: #d4e0da;
  --line-soft: #e4ece8;
  --ink: #14221f;
  --muted: #61716c;
  --faint: #87948f;
  --teal: #117a74;
  --teal-deep: #d5eee8;
  --orange: #a85f2f;
  --orange-deep: #f3dfcd;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 15px; line-height: 1.65; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }
.skip-link { position: fixed; left: 1rem; top: -4rem; z-index: 30; padding: .65rem 1rem; background: var(--teal); color: #071313; border-radius: 5px; font-weight: 700; transition: top .2s; }
.skip-link:focus { top: 1rem; }

.app-shell { min-height: 100vh; }
.topbar { height: 76px; padding: 0 clamp(1.25rem, 4vw, 4rem); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 94%, transparent); position: sticky; top: 0; z-index: 20; backdrop-filter: blur(16px); }
.brand { display: flex; gap: .7rem; align-items: center; min-width: 230px; }
.brand-mark { width: 31px; height: 31px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; align-items: end; padding: 5px; border: 1px solid var(--teal); border-radius: 8px; transform: rotate(-4deg); }
.brand-mark span { display: block; background: var(--teal); border-radius: 2px; }
.brand-mark span:nth-child(1) { height: 45%; opacity: .65; }
.brand-mark span:nth-child(2) { height: 78%; }
.brand-mark span:nth-child(3) { height: 100%; opacity: .82; }
.brand strong { display: block; font-size: .95rem; letter-spacing: .08em; text-transform: uppercase; line-height: 1.05; }
.brand small { display: block; margin-top: .24rem; color: var(--muted); font-size: .65rem; letter-spacing: .08em; text-transform: uppercase; line-height: 1; }
.topbar-actions { display: flex; align-items: center; gap: .6rem; }
.search-trigger, .icon-button { border: 1px solid var(--line); background: var(--panel); border-radius: 5px; cursor: pointer; transition: border-color .2s, background .2s, color .2s; }
.search-trigger:hover, .icon-button:hover { border-color: var(--teal-deep); color: var(--teal); }
.search-trigger { display: flex; align-items: center; gap: .6rem; min-width: 220px; padding: .48rem .65rem; color: var(--muted); text-align: left; font-size: .82rem; }
.search-glyph { font-size: 1.25rem; line-height: .7; color: var(--teal); }
kbd { border: 1px solid var(--line); background: var(--bg-soft); border-radius: 3px; padding: .1rem .35rem; color: var(--faint); font: .68rem var(--mono); }
.search-trigger kbd { margin-left: auto; }
.icon-button { width: 34px; height: 34px; padding: 0; font-size: 1.1rem; }
.mobile-menu-button { display: none; }
.github-link { color: var(--muted); font-size: .8rem; margin-left: .35rem; }
.github-link:hover, .text-link:hover { color: var(--teal); }
.github-link span, .text-link span { color: var(--teal); }

.body-grid { display: grid; grid-template-columns: 262px minmax(0, 1fr); max-width: 1510px; margin: 0 auto; }
.sidebar { min-height: calc(100vh - 76px); padding: 2.1rem 1.35rem 1.5rem clamp(1.25rem, 4vw, 3rem); border-right: 1px solid var(--line); display: flex; flex-direction: column; position: sticky; top: 76px; height: calc(100vh - 76px); overflow-y: auto; }
.sidebar-intro { padding: 0 .55rem 1.7rem; border-bottom: 1px solid var(--line-soft); margin-bottom: 1.3rem; }
.sidebar-intro p { max-width: 190px; margin: .7rem 0 0; color: var(--muted); font-family: var(--serif); font-size: .96rem; line-height: 1.45; }
.eyebrow { color: var(--orange); font: 600 .64rem var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.nav-group { margin-bottom: 1.3rem; }
.nav-label { display: flex; gap: .6rem; align-items: center; color: var(--faint); font: 600 .65rem var(--mono); letter-spacing: .1em; text-transform: uppercase; margin: 0 .55rem .45rem; }
.nav-label span { color: var(--orange); font-size: .6rem; }
.nav-link { display: block; padding: .34rem .55rem; border-left: 1px solid transparent; color: var(--muted); font-size: .78rem; line-height: 1.35; transition: color .2s, background .2s, border-color .2s; }
.nav-link:hover { color: var(--ink); }
.nav-link.active { color: var(--teal); border-left-color: var(--teal); background: color-mix(in srgb, var(--teal) 10%, transparent); }
.sidebar-footer { margin-top: auto; padding: 1.1rem .55rem 0; color: var(--faint); border-top: 1px solid var(--line-soft); font: .66rem var(--mono); }
.status-dot { display: inline-block; width: 6px; height: 6px; margin-right: .45rem; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 3px color-mix(in srgb, var(--teal) 15%, transparent); }

.main-content { min-width: 0; }
.home-hero { min-height: 560px; padding: clamp(4rem, 9vw, 8rem) clamp(1.5rem, 7vw, 8rem) clamp(3.2rem, 7vw, 6.5rem); display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(270px, .75fr); gap: clamp(2rem, 7vw, 7rem); align-items: center; border-bottom: 1px solid var(--line); background: radial-gradient(circle at 73% 42%, color-mix(in srgb, var(--teal) 8%, transparent), transparent 28%), linear-gradient(120deg, transparent 58%, color-mix(in srgb, var(--orange) 4%, transparent)); }
.hero-copy { max-width: 650px; }
.hero-copy h1 { max-width: 620px; margin: 1rem 0 1.25rem; font-size: clamp(3.1rem, 6vw, 5.65rem); font-weight: 500; letter-spacing: -.055em; line-height: .96; }
.hero-copy h1 em { color: var(--teal); font-family: var(--serif); font-weight: 400; letter-spacing: -.07em; }
.hero-lede { max-width: 535px; margin: 0; color: var(--muted); font-family: var(--serif); font-size: clamp(1.1rem, 1.7vw, 1.35rem); line-height: 1.5; }
.hero-actions { display: flex; align-items: center; gap: 1.3rem; margin-top: 2.25rem; }
.button { display: inline-flex; gap: 1.1rem; align-items: center; padding: .72rem 1rem; border: 1px solid var(--teal); border-radius: 4px; font-size: .78rem; font-weight: 700; }
.button.primary { background: var(--teal); color: #091515; }
.button.primary:hover { background: var(--ink); border-color: var(--ink); }
.text-link { color: var(--ink); font-size: .79rem; font-weight: 700; }
.hero-diagram { max-width: 330px; justify-self: end; width: 100%; }
.diagram-label { padding-bottom: .8rem; border-bottom: 1px solid var(--line); color: var(--faint); font: .64rem var(--mono); letter-spacing: .14em; }
.diagram-stack { padding-top: .6rem; }
.diagram-stack > div { display: grid; grid-template-columns: 32px 1fr; gap: .5rem; padding: .85rem .75rem; border: 1px solid var(--line); background: color-mix(in srgb, var(--panel) 70%, transparent); }
.diagram-stack > div.highlight { border-color: var(--teal-deep); background: color-mix(in srgb, var(--teal) 10%, var(--panel)); transform: translateX(12px); }
.diagram-stack i { display: block; margin: .15rem 0; color: var(--teal); font-style: normal; text-align: center; }
.step-no { grid-row: span 2; color: var(--orange); font: .65rem var(--mono); padding-top: .15rem; }
.diagram-stack strong { display: block; font-size: .87rem; line-height: 1.3; }
.diagram-stack small { display: block; color: var(--muted); font: .67rem var(--mono); margin-top: .2rem; }
.home-section { padding: clamp(2.5rem, 5vw, 5rem) clamp(1.5rem, 7vw, 8rem); border-bottom: 1px solid var(--line); }
.section-index { color: var(--orange); font: .65rem var(--mono); letter-spacing: .12em; }
.manifesto { display: grid; grid-template-columns: minmax(120px, .32fr) 1fr; gap: clamp(2rem, 7vw, 7rem); }
.manifesto h2 { max-width: 760px; margin: 0; font-size: clamp(1.8rem, 3vw, 3rem); font-weight: 500; letter-spacing: -.04em; line-height: 1.1; }
.manifesto h2 span { color: var(--teal); font-family: var(--serif); font-style: italic; font-weight: 400; }
.manifesto p { max-width: 605px; margin: 1.7rem 0 0; color: var(--muted); font-family: var(--serif); font-size: 1.05rem; }
.route-cards { display: grid; grid-template-columns: minmax(120px, .32fr) 1fr; gap: clamp(2rem, 7vw, 7rem); }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; }
.feature-card { min-height: 255px; padding: 1.4rem; border: 1px solid var(--line); background: var(--panel); display: flex; flex-direction: column; transition: transform .2s, border-color .2s; }
.feature-card:hover { transform: translateY(-4px); border-color: var(--teal-deep); }
.card-number { color: var(--orange); font: .65rem var(--mono); }
.feature-card h3 { margin: auto 0 .6rem; font-size: 1.18rem; font-weight: 500; letter-spacing: -.02em; }
.feature-card p { margin: 0; color: var(--muted); font-family: var(--serif); font-size: .9rem; line-height: 1.45; }
.card-arrow { align-self: end; margin-top: 1.5rem; color: var(--teal); font-size: 1.25rem; }
.dark-card { background: var(--teal); border-color: var(--teal); color: #081716; }
.dark-card p, .dark-card .card-arrow { color: #245d59; }
.dark-card .card-number { color: #5c3c2c; }
.dark-card:hover { border-color: var(--ink); }
.home-callout { background: var(--panel); }
.quote-mark { color: var(--orange); font: 5rem/0.7 var(--serif); }
.home-callout blockquote { max-width: 790px; margin: 1.1rem 0 .8rem; font-family: var(--serif); font-size: clamp(1.65rem, 3.2vw, 3rem); line-height: 1.1; }
.home-callout p { max-width: 520px; margin: 0 0 1.2rem; color: var(--muted); }
.home-meta { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; padding-top: 2rem; padding-bottom: 2rem; }
.home-meta div { display: flex; flex-direction: column; gap: .35rem; }
.home-meta strong { font-size: .78rem; font-weight: 500; }

.doc-page { max-width: 1100px; padding: 2.3rem clamp(1.5rem, 7vw, 8rem) 4rem; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: .5rem; color: var(--faint); font: .65rem var(--mono); }
.breadcrumbs a:hover { color: var(--teal); }
.doc-header { max-width: 760px; padding: 3.6rem 0 3rem; }
.doc-kicker { display: flex; align-items: center; gap: .7rem; }
.type-pill { padding: .26rem .45rem; border: 1px solid var(--teal-deep); color: var(--teal); border-radius: 3px; font: 600 .61rem var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.type-pill.adr, .type-pill.decision { color: var(--orange); border-color: var(--orange-deep); }
.read-time { color: var(--faint); font: .67rem var(--mono); }
.doc-header h1 { margin: 1.1rem 0 .8rem; font-size: clamp(2.4rem, 5vw, 4.4rem); font-weight: 500; letter-spacing: -.06em; line-height: 1; }
.lede { margin: 0; color: var(--muted); font-family: var(--serif); font-size: clamp(1.05rem, 1.6vw, 1.25rem); line-height: 1.5; }
.doc-layout { display: grid; grid-template-columns: minmax(0, 690px) 160px; gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.prose { min-width: 0; }
.prose h2 { margin: 3rem 0 1rem; padding-top: .2rem; font-size: 1.55rem; letter-spacing: -.035em; font-weight: 550; }
.prose h3 { margin: 2rem 0 .7rem; font-size: 1.08rem; font-weight: 650; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: var(--muted); }
.prose p { margin: 0 0 1.1rem; }
.prose strong { color: var(--ink); font-weight: 650; }
.prose em { color: var(--ink); font-family: var(--serif); }
.prose a { color: var(--teal); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--teal) 40%, transparent); text-underline-offset: 3px; }
.prose ul, .prose ol { padding-left: 1.25rem; margin: .4rem 0 1.35rem; }
.prose li { padding-left: .3rem; margin: .35rem 0; }
.prose li::marker { color: var(--orange); }
.prose blockquote { margin: 1.7rem 0; padding: 1rem 1.25rem; border-left: 2px solid var(--teal); background: var(--panel); color: var(--ink); font-family: var(--serif); font-size: 1.08rem; }
.prose pre { position: relative; margin: 1.5rem 0; padding: 1.1rem 1.2rem; overflow-x: auto; border: 1px solid var(--line); border-radius: 5px; background: #081016; color: #bfe8df; font: .77rem/1.7 var(--mono); }
.copy-button { position: absolute; top: .55rem; right: .55rem; padding: .2rem .4rem; border: 1px solid var(--line); border-radius: 3px; background: #12212a; color: var(--faint); cursor: pointer; font: .62rem var(--mono); }
.copy-button:hover { color: var(--teal); border-color: var(--teal-deep); }
[data-theme='light'] .prose pre { background: #17211f; color: #ccf2e9; }
.prose pre.diagram { border-color: var(--teal-deep); color: var(--teal); }
.prose code { padding: .13rem .3rem; border-radius: 3px; background: var(--panel-strong); color: var(--teal); font: .83em var(--mono); }
.prose pre code { padding: 0; background: transparent; color: inherit; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.4rem 0; }
.prose table { width: 100%; margin: 1.5rem 0; border-collapse: collapse; font-size: .83rem; }
.prose th, .prose td { padding: .65rem .7rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { color: var(--ink); background: var(--panel); font-weight: 650; }
.prose td { color: var(--muted); }
.toc { position: sticky; top: 110px; border-left: 1px solid var(--line); padding-left: 1rem; }
.toc-title { color: var(--faint); font: .61rem var(--mono); letter-spacing: .1em; margin-bottom: .7rem; }
.toc a { display: block; padding: .25rem 0; color: var(--faint); font-size: .7rem; line-height: 1.35; }
.toc a:hover, .toc a.active { color: var(--teal); }
.doc-footer { margin-top: 4rem; padding-top: 1.3rem; border-top: 1px solid var(--line); }
.doc-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.doc-nav-link { display: flex; flex-direction: column; gap: .25rem; padding: .85rem; border: 1px solid var(--line); background: var(--panel); }
.doc-nav-link:hover { border-color: var(--teal-deep); }
.doc-nav-link.next { text-align: right; }
.doc-nav-link span { color: var(--teal); font: .65rem var(--mono); }
.doc-nav-link strong { font-size: .82rem; font-weight: 500; }
.source-note { margin-top: 1.4rem; color: var(--faint); font: .66rem var(--mono); }
.source-note a { color: var(--muted); text-decoration: underline; }
.empty-page { padding: 8rem 0; }
.empty-page h1 { font-size: 4rem; letter-spacing: -.06em; font-weight: 500; }
.empty-page p { color: var(--muted); }

.search-dialog[hidden] { display: none; }
.search-dialog { position: fixed; inset: 0; z-index: 50; display: grid; place-items: start center; padding-top: 12vh; }
.search-backdrop { position: absolute; inset: 0; background: rgba(2, 7, 10, .76); backdrop-filter: blur(5px); }
.search-panel { position: relative; width: min(650px, calc(100vw - 2rem)); overflow: hidden; border: 1px solid var(--line); border-radius: 7px; background: var(--bg-soft); box-shadow: 0 25px 90px rgba(0,0,0,.35); }
.search-panel-head { display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.1rem .6rem; color: var(--muted); font: .72rem var(--mono); }
.search-input-wrap { display: flex; align-items: center; gap: .7rem; margin: 0 .85rem; padding: .75rem .7rem; border: 1px solid var(--teal-deep); border-radius: 4px; background: var(--panel); }
.search-input-wrap input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: 1rem; }
.search-results { max-height: 52vh; overflow-y: auto; padding: .55rem .85rem; }
.search-empty { padding: 2rem .5rem; color: var(--faint); font-family: var(--serif); text-align: center; }
.search-result { display: block; padding: .7rem; border-bottom: 1px solid var(--line-soft); }
.search-result:hover, .search-result.selected { background: var(--panel); }
.search-result-title { display: flex; justify-content: space-between; gap: 1rem; color: var(--ink); font-size: .88rem; }
.search-result-type { color: var(--orange); font: .61rem var(--mono); text-transform: uppercase; }
.search-result p { overflow: hidden; margin: .2rem 0 0; color: var(--muted); font-size: .74rem; text-overflow: ellipsis; white-space: nowrap; }
.search-hint { padding: .65rem 1.1rem .85rem; color: var(--faint); font: .65rem var(--mono); }
.search-hint kbd { margin-right: .25rem; }
.search-hint span { margin: 0 .35rem; }

@media (max-width: 980px) {
  .body-grid { grid-template-columns: 220px minmax(0, 1fr); }
  .home-hero { padding-left: clamp(1.5rem, 5vw, 4rem); padding-right: clamp(1.5rem, 5vw, 4rem); gap: 2rem; }
  .home-section { padding-left: clamp(1.5rem, 5vw, 4rem); padding-right: clamp(1.5rem, 5vw, 4rem); }
  .doc-page { padding-left: clamp(1.5rem, 5vw, 4rem); padding-right: clamp(1.5rem, 5vw, 4rem); }
}
@media (max-width: 760px) {
  .topbar { height: 66px; }
  .brand { min-width: 0; }
  .brand small { display: none; }
  .github-link { display: none; }
  .mobile-menu-button { display: block; }
  .search-trigger { min-width: 0; width: 34px; justify-content: center; padding: 0; }
  .search-trigger span:not(.search-glyph), .search-trigger kbd { display: none; }
  .sidebar { position: fixed; top: 66px; left: 0; bottom: 0; z-index: 15; width: min(290px, 84vw); height: auto; background: var(--bg); box-shadow: 15px 0 50px rgba(0,0,0,.25); transform: translateX(-105%); transition: transform .25s ease; }
  .sidebar.open { transform: translateX(0); }
  .body-grid { display: block; }
  .home-hero { min-height: auto; grid-template-columns: 1fr; padding-top: 4.5rem; }
  .hero-copy h1 { font-size: clamp(3.2rem, 15vw, 5rem); }
  .hero-diagram { justify-self: stretch; max-width: none; margin-top: 1.5rem; }
  .manifesto, .route-cards { grid-template-columns: 1fr; gap: 1.5rem; }
  .card-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 190px; }
  .home-meta { grid-template-columns: 1fr; gap: 1.1rem; }
  .doc-layout { display: block; }
  .toc { display: none; }
  .doc-header { padding-top: 2.6rem; }
  .doc-header h1 { font-size: clamp(2.6rem, 12vw, 4.5rem); }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; } }