:root {
  color-scheme: dark;
  --bg: #0a0d0f;
  --panel: #101417;
  --panel-2: #151a1e;
  --line: #273038;
  --text: #eef0eb;
  --muted: #98a2aa;
  --accent: #b7ff3c;
  --accent-ink: #101500;
  --code: #090c0e;
  --shadow: 0 18px 60px rgb(0 0 0 / 28%);
  --sidebar: 286px;
  --toc: 224px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f6f2;
  --panel: #ffffff;
  --panel-2: #eceee9;
  --line: #d8ddd5;
  --text: #171b18;
  --muted: #606a64;
  --accent: #77c900;
  --accent-ink: #101500;
  --code: #171b1d;
  --shadow: 0 18px 60px rgb(30 40 32 / 10%);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  background:
    linear-gradient(rgb(255 255 255 / 2%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / 2%) 1px, transparent 1px),
    var(--bg);
  background-size: 64px 64px;
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
}

a { color: inherit; }

.topbar {
  position: sticky;
  z-index: 50;
  top: 0;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 28px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
  text-decoration: none;
  letter-spacing: .03em;
}

.brand span {
  color: var(--accent);
  font: 800 15px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.brand b { font-size: 13px; }

.top-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 13px;
}

.top-actions a {
  color: var(--muted);
  text-decoration: none;
}

button { font: inherit; }

.icon-button,
.search-button {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  cursor: pointer;
}

.icon-button {
  width: 36px;
  height: 36px;
}

.search-button {
  min-width: 148px;
  padding: 7px 11px;
  text-align: left;
}

.search-button kbd {
  float: right;
  padding: 0 6px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font: 11px/20px ui-monospace, monospace;
}

.menu-button { display: none; }

.layout {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 820px) var(--toc);
  justify-content: center;
  min-height: calc(100vh - 64px);
}

.sidebar,
.toc {
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow: auto;
  scrollbar-width: thin;
}

.sidebar {
  padding: 30px 26px 80px 18px;
  border-right: 1px solid var(--line);
}

.sidebar a {
  display: block;
  margin: 2px 0;
  padding: 7px 11px;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
  text-decoration: none;
}

.sidebar a:hover { color: var(--text); }

.sidebar a[aria-current="page"] {
  border-left-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  color: var(--accent);
}

.sidebar .nav-home {
  margin-bottom: 24px;
  color: var(--text);
  font-size: 16px;
  font-weight: 750;
}

.nav-group {
  margin: 21px 11px 7px;
  color: var(--text);
  font: 700 11px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.article {
  min-width: 0;
  padding: 58px 64px 100px;
  background: color-mix(in srgb, var(--bg) 93%, transparent);
}

.article > :first-child { margin-top: 0; }

.article h1,
.article h2,
.article h3,
.article h4 {
  line-height: 1.28;
  letter-spacing: -.025em;
  text-wrap: balance;
}

.article h1 { margin: 0 0 24px; font-size: 42px; }
.article h2 { margin: 0 0 32px; font-size: 38px; }
.article h3 { margin: 52px 0 18px; font-size: 25px; }
.article h4 { margin: 34px 0 14px; font-size: 19px; }

.article p,
.article li {
  color: color-mix(in srgb, var(--text) 90%, var(--muted));
}

.article p { margin: 15px 0; }
.article ul,
.article ol { margin: 16px 0; padding-left: 1.4em; }
.article li { margin: 7px 0; padding-left: .25em; }
.article strong { color: var(--text); }

.article a {
  color: var(--accent);
  text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent);
  text-underline-offset: 3px;
}

.article code {
  padding: .13em .38em;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel-2);
  color: color-mix(in srgb, var(--accent) 80%, var(--text));
  font: .88em/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.code-block {
  position: relative;
  margin: 22px 0;
}

.code-block pre {
  overflow: auto;
  margin: 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--code);
  box-shadow: inset 3px 0 var(--accent);
}

.code-block pre code {
  padding: 0;
  border: 0;
  background: none;
  color: #e6e9e5;
  font-size: 13px;
  line-height: 1.7;
}

.copy-code {
  position: absolute;
  z-index: 1;
  top: 10px;
  right: 10px;
  padding: 5px 9px;
  border: 1px solid #384249;
  background: #151a1d;
  color: #a9b2b7;
  font-size: 11px;
  cursor: pointer;
}

blockquote,
.hero-note {
  margin: 24px 0;
  padding: 17px 20px;
  border-left: 3px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 7%, var(--panel));
  color: var(--text);
}

.chapter-guide {
  margin: 0 0 34px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--accent);
  background: color-mix(in srgb, var(--panel) 88%, transparent);
}

.chapter-guide-meta {
  display: flex;
  gap: 8px;
  margin-bottom: 15px;
}

.chapter-guide-meta span {
  padding: 4px 8px;
  border: 1px solid var(--line);
  color: var(--accent);
  font: 700 10px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.chapter-guide-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 22px;
}

.chapter-guide-grid b {
  font-size: 13px;
}

.article .chapter-guide-grid ol,
.article .chapter-guide-grid ul {
  margin: 8px 0 0;
  padding-left: 1.2em;
}

.article .chapter-guide-grid li {
  margin: 4px 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.article .chapter-deliverable {
  margin: 15px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

.chapter-deliverable strong {
  margin-right: 9px;
  color: var(--accent) !important;
}

.lifecycle-diagram {
  margin: 24px 0 42px;
  padding: 22px;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 5%, transparent), transparent 42%),
    var(--panel);
}

.lifecycle-group-label {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 12px !important;
  color: var(--muted) !important;
  font: 700 11px/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .12em;
}

.lifecycle-group-label span {
  color: var(--accent);
}

.lifecycle-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 26px minmax(0, 1fr) 26px minmax(0, 1fr);
  align-items: stretch;
  gap: 8px;
  margin: 0 !important;
  padding: 0 !important;
  list-style: none;
}

.article .lifecycle-stage {
  min-width: 0;
  margin: 0;
  padding: 15px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel-2) 78%, transparent);
}

.lifecycle-stage-heading {
  display: flex;
  align-items: baseline;
  gap: 9px;
}

.lifecycle-stage-heading span {
  color: var(--accent);
  font: 700 10px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.lifecycle-stage-heading strong {
  font-size: 15px;
  line-height: 1.35;
}

.article .lifecycle-output {
  min-height: 38px;
  margin: 9px 0 12px;
  color: var(--accent);
  font: 700 12px/1.55 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.article .lifecycle-stage ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.article .lifecycle-stage li {
  position: relative;
  margin: 6px 0;
  padding: 0 0 0 13px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.lifecycle-stage li::before {
  position: absolute;
  top: .62em;
  left: 0;
  width: 4px;
  height: 4px;
  background: color-mix(in srgb, var(--accent) 72%, var(--line));
  content: "";
}

.article .lifecycle-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
  color: var(--accent);
  font: 700 19px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.lifecycle-handoff {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 16px 0;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.lifecycle-handoff span {
  flex: 0 0 auto;
  padding: 4px 8px;
  border: 1px solid color-mix(in srgb, var(--accent) 65%, var(--line));
  color: var(--accent);
  font: 750 10px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .1em;
}

.lifecycle-handoff b {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.lifecycle-feedback {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-top: 16px;
  padding: 11px 13px;
  border-left: 2px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 6%, transparent);
}

.lifecycle-feedback > span {
  color: var(--accent);
  font: 700 19px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.article .lifecycle-feedback p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.toolbar { display: none; }

hr {
  margin: 48px 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.table-wrap {
  overflow-x: auto;
  margin: 24px 0;
  border: 1px solid var(--line);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th,
td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--panel-2);
  color: var(--text);
  font-size: 12px;
  letter-spacing: .04em;
}

tr:last-child td { border-bottom: 0; }

.task-list { list-style: none; padding: 0 !important; }
.task { display: flex; gap: 9px; }
.task input { margin-top: 8px; accent-color: var(--accent); }

.toc {
  padding: 52px 20px 80px 24px;
  border-left: 1px solid var(--line);
}

.toc p {
  margin: 0 0 13px;
  color: var(--text);
  font: 700 11px/1.4 ui-monospace, monospace;
  letter-spacing: .12em;
}

.toc a {
  display: block;
  padding: 5px 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
  text-decoration: none;
}

.toc a:hover { color: var(--accent); }
.toc .depth-4 { padding-left: 12px; }

.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 72px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.pager a {
  padding: 15px 17px;
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 13px;
  text-decoration: none;
}

.pager a:last-child { text-align: right; }
.pager a:hover { border-color: var(--accent); }

.sources {
  margin-top: 64px;
  padding: 26px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.sources h3 {
  margin: 0 0 10px;
  font-size: 22px;
}

.sources-policy {
  margin: 0 0 20px !important;
  color: var(--muted) !important;
  font-size: 13px;
}

.sources ol {
  margin: 0;
  padding-left: 22px;
}

.sources li {
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.sources li > div {
  display: flex;
  align-items: baseline;
  gap: 9px;
}

.sources li p {
  margin: 4px 0 0 !important;
  color: var(--muted) !important;
  font-size: 12px;
}

.source-kind {
  flex: 0 0 auto;
  padding: 1px 5px;
  border: 1px solid var(--line);
  color: var(--muted);
  font: 10px/1.5 ui-monospace, monospace;
}

.hero {
  padding: 22px 0 64px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 14px !important;
  color: var(--accent) !important;
  font: 700 11px/1.4 ui-monospace, monospace;
  letter-spacing: .16em;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(42px, 6vw, 68px);
  line-height: 1.04;
}

.hero > p:not(.eyebrow) {
  max-width: 690px;
  margin-top: 26px;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin: 34px 0 48px;
}

.hero-actions a {
  padding: 11px 17px;
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.hero-actions .primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.principles div {
  display: flex;
  flex-direction: column;
  padding: 18px;
  background: var(--panel);
}

.principles b { color: var(--accent); font: 700 23px/1 ui-monospace, monospace; }
.principles span { margin-top: 8px; color: var(--muted); font-size: 12px; }

.path {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  padding: 60px 0 28px;
}

.path h2 { margin: 0; font-size: 28px; }
.path > p { margin: 25px 0 0; color: var(--muted); font-size: 14px; }

.chapter-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.chapter-card {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 10px;
  min-height: 82px;
  padding: 18px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--text) !important;
  text-decoration: none !important;
}

.chapter-card:hover { background: color-mix(in srgb, var(--accent) 5%, var(--panel)); }
.chapter-card span { color: var(--accent); font: 12px/1.6 ui-monospace, monospace; }
.chapter-card strong { font-size: 14px; font-weight: 650; }

.lab-callout {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 40px;
  margin-top: 64px;
  padding: 30px;
  border: 1px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 5%, var(--panel));
}

.lab-callout h2 { margin: 0; font-size: 27px; }
.lab-callout p:not(.eyebrow) { color: var(--muted); font-size: 14px; }
.lab-callout > a { white-space: nowrap; font-size: 13px; }

.search-dialog {
  position: fixed;
  z-index: 100;
  inset: 0;
  padding: 12vh 20px 20px;
  background: rgb(0 0 0 / 58%);
  backdrop-filter: blur(5px);
}

.search-panel {
  max-width: 680px;
  max-height: 72vh;
  overflow: auto;
  margin: auto;
  padding: 22px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.search-panel label {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.search-panel input {
  width: 100%;
  margin-top: 8px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  outline: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.4 inherit;
}

.search-panel input:focus { border-color: var(--accent); }
.search-results { margin: 16px 0; }

.search-results a {
  display: block;
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

.search-results strong { display: block; color: var(--text); font-size: 14px; }
.search-results span { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }

.search-close {
  padding: 7px 12px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 28px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font: 11px/1.5 ui-monospace, monospace;
  letter-spacing: .05em;
}

@media (max-width: 1120px) {
  .layout { grid-template-columns: var(--sidebar) minmax(0, 820px); }
  .toc { display: none; }
}

@media (max-width: 760px) {
  .topbar { padding: 0 14px; }
  .brand b,
  .top-actions > a,
  .search-button { display: none; }
  .menu-button { display: inline-block; }
  .layout { display: block; }
  .sidebar {
    position: fixed;
    z-index: 40;
    top: 64px;
    left: 0;
    width: min(86vw, 320px);
    transform: translateX(-105%);
    background: var(--panel);
    box-shadow: var(--shadow);
    transition: transform .18s ease;
  }
  body[data-menu="open"] .sidebar { transform: translateX(0); }
  .article { padding: 40px 20px 72px; }
  .article h2 { font-size: 31px; }
  .article h3 { margin-top: 42px; font-size: 22px; }
  .hero h1 { font-size: 42px; }
  .hero > p:not(.eyebrow) { font-size: 16px; }
  .path,
  .lab-callout { grid-template-columns: 1fr; }
  .chapter-grid { grid-template-columns: 1fr; }
  .principles div { padding: 14px 10px; }
  .pager { grid-template-columns: 1fr; }
  .pager a:last-child { text-align: left; }
  .lifecycle-diagram { padding: 16px; }
  .lifecycle-row { grid-template-columns: 1fr; }
  .article .lifecycle-arrow {
    min-height: 20px;
    transform: rotate(90deg);
  }
  .article .lifecycle-output { min-height: 0; }
  .chapter-guide-grid { grid-template-columns: 1fr; gap: 14px; }
  .lifecycle-handoff {
    align-items: flex-start;
    flex-direction: column;
  }
  footer { flex-direction: column; }
}

@media print {
  .topbar,
  .sidebar,
  .toc,
  .pager,
  footer { display: none; }
  .layout { display: block; }
  .article { max-width: none; padding: 0; }
}