:root {
  --font-sans: "Segoe UI", sans-serif;
  --font-mono: ui-monospace, Consolas, monospace;
  color-scheme: dark;
  --bg: #090b08;
  --sidebar: #0d100c;
  --surface: #141910;
  --border: #262d1e;
  --text: #f3f1e8;
  --muted: #a3a89a;
  --faint: #737868;
  --accent: #d6ff4a;
  --accent-ink: #172000;
  --info: #8eb6ff;
  --warning: #f0c14a;
  --danger: #ff8d7a;
  --success: #8ee08a;
  --shadow: 0 16px 50px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans), "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

a { color: inherit; }

button, input { font: inherit; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.app {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 100vh;
}

.topbar,
.backdrop { display: none; }

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
  padding: 22px 16px 32px;
  background: var(--sidebar);
  border-right: 1px solid var(--border);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 650;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.wordmark::before {
  content: "";
  width: 18px;
  height: 18px;
  background: linear-gradient(160deg, var(--accent), #8fb82a);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.desktop-mark { margin: 0 8px 18px; }

.search { display: block; margin: 0 4px 18px; }

.search input {
  width: 100%;
  border: 1px solid var(--border);
  background: #10150e;
  color: var(--text);
  border-radius: 10px;
  padding: 9px 12px;
  outline: none;
}

.search input:focus { border-color: var(--accent); }

.nav-section { margin-bottom: 16px; }

.nav-label {
  margin: 0 8px 6px;
  color: var(--faint);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav ul { list-style: none; margin: 0; padding: 0; }

.nav a {
  display: block;
  padding: 6px 10px;
  border-radius: 8px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.35;
}

.nav a:hover { background: #171d13; color: var(--text); }

.nav a[aria-current="page"] {
  background: #1b240f;
  color: var(--accent);
}

.empty { color: var(--faint); padding: 0 10px; font-size: 14px; }

.main {
  display: grid;
  grid-template-columns: minmax(0, 780px) 200px;
  justify-content: center;
  column-gap: 36px;
  padding: 12px 28px 0 8px;
}

.doc { min-width: 0; padding: 28px 8px 88px; }

.toc {
  position: sticky;
  top: 0;
  align-self: start;
  max-height: 100vh;
  overflow: auto;
  padding: 36px 0 24px;
}

.toc p {
  margin: 0 0 8px;
  color: var(--faint);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.toc ul { list-style: none; margin: 0; padding: 0; }

.toc a {
  display: block;
  padding: 4px 0;
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.35;
}

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

.toc-sub { padding-left: 12px; }

.prose { font-size: 16.5px; }

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

.prose h1,
.prose h2,
.prose h3,
.prose h4 {
  scroll-margin-top: 24px;
  line-height: 1.2;
  letter-spacing: -0.03em;
  font-weight: 640;
}

.prose h1 { font-size: 42px; margin: 0 0 18px; }
.prose h2 { font-size: 28px; margin: 2.2rem 0 0.8rem; }
.prose h3 { font-size: 20px; margin: 1.7rem 0 0.6rem; }
.prose h4 { font-size: 16px; margin: 1.3rem 0 0.4rem; }

.prose p { margin: 0.8rem 0; }

.prose a { color: var(--accent); text-underline-offset: 3px; }

.prose a:hover { color: #edffb0; }

.prose ul,
.prose ol { padding-left: 1.3rem; }

.prose li { margin: 0.3rem 0; }

.prose li::marker { color: var(--accent); }

.prose blockquote {
  margin: 1rem 0;
  padding: 0.2rem 0 0.2rem 1rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}

.prose hr { border: 0; border-top: 1px solid var(--border); margin: 2rem 0; }

.prose code,
.prose pre {
  font-family: var(--font-mono), ui-monospace, monospace;
}

.prose :not(pre) > code {
  background: #1a2114;
  border-radius: 5px;
  padding: 0.1em 0.35em;
  font-size: 0.86em;
}

.prose pre {
  overflow: auto;
  background: #10150e;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  line-height: 1.5;
  font-size: 13px;
}

.prose pre code { background: transparent; padding: 0; }

.prose img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff;
}

.prose figure { margin: 1.3rem 0; }

.prose figcaption,
.prose .embed p {
  color: var(--muted);
  font-size: 14px;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
  margin: 1rem 0 1.4rem;
  font-size: 14px;
}

.prose th,
.prose td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
  white-space: nowrap;
}

.prose th { background: #161c12; color: var(--text); }

.prose details {
  margin: 0.7rem 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  padding: 10px 14px;
}

.prose summary { cursor: pointer; font-weight: 640; }

.prose details p:last-child { margin-bottom: 0; }

.hint {
  margin: 1rem 0;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #12170f;
}

.hint .hint-label {
  margin: 0 0 4px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hint p:last-child { margin-bottom: 0; }

.hint-info { border-color: #2c4066; }
.hint-info .hint-label { color: var(--info); }
.hint-warning { border-color: #5c4a1e; }
.hint-warning .hint-label { color: var(--warning); }
.hint-success { border-color: #245c32; }
.hint-success .hint-label { color: var(--success); }
.hint-danger { border-color: #6a2e2e; }
.hint-danger .hint-label { color: var(--danger); }

a.content-ref,
a.embed-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0.55rem 0;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
}

a.content-ref::after { content: "→"; color: var(--accent); }

a.content-ref:hover,
a.embed-link:hover { border-color: #62733a; }

a.embed-link {
  flex-direction: column;
  align-items: flex-start;
}

a.embed-link strong { font-weight: 640; }
a.embed-link span { color: var(--muted); font-size: 14px; }

.embed iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 12px;
  background: #000;
}

.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 48px;
}

.pager-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 76px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  text-decoration: none;
}

.pager-link span {
  color: var(--faint);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.pager-link.next { text-align: right; align-items: flex-end; }
.pager-link:hover { border-color: var(--accent); }

.not-found {
  min-height: 100vh;
  display: grid;
  place-content: center;
  justify-items: start;
  gap: 8px;
  padding: 32px;
}

.not-found p { margin: 0; color: var(--accent); letter-spacing: 0.12em; }
.not-found h1 { margin: 0 0 8px; }
.not-found a { color: var(--accent); }

@media (max-width: 1100px) {
  .main { grid-template-columns: minmax(0, 780px); }
  .toc { display: none; }
}

@media (max-width: 860px) {
  .app { display: block; }

  .topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    position: sticky;
    top: 0;
    z-index: 20;
    height: 56px;
    padding: 0 14px;
    background: rgba(9, 11, 8, 0.92);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
  }

  .desktop-mark { display: none; }

  .menu-button {
    width: 38px;
    height: 38px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: transparent;
    display: grid;
    place-content: center;
    gap: 4px;
    padding: 0;
  }

  .menu-button span {
    display: block;
    width: 16px;
    height: 1.5px;
    background: var(--text);
  }

  .backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 30;
    border: 0;
    background: rgba(0, 0, 0, 0.55);
  }

  .sidebar {
    position: fixed;
    z-index: 40;
    width: min(86vw, 320px);
    transform: translateX(-105%);
    transition: transform 160ms ease;
    box-shadow: var(--shadow);
  }

  .sidebar.open { transform: none; }

  .main { padding: 0 18px; }
  .doc { padding-top: 22px; }
  .prose h1 { font-size: 32px; }
  .pager { grid-template-columns: 1fr; }
  .pager-link.next { text-align: left; align-items: flex-start; }
}