:root {
  color-scheme: dark;
  --bg-base: #0a0612;
  --bg-surface: #14102a;
  --bg-surface-hover: #1c1640;
  --bg-elevated: #201850;
  --glass-bg: rgba(28, 22, 64, 0.55);
  --glass-bg-strong: rgba(28, 22, 64, 0.78);
  --glass-border: rgba(131, 110, 249, 0.18);
  --accent: #836ef9;
  --accent-hover: #9580ff;
  --accent-pressed: #6e5ae0;
  --accent-glow: rgba(131, 110, 249, 0.45);
  --accent-soft: rgba(131, 110, 249, 0.08);
  --secondary: #a0055d;
  --text-primary: #fbfaf9;
  --text-secondary: #b8b3d1;
  --text-tertiary: #8b85a8;
  --text-disabled: #44405a;
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(131, 110, 249, 0.4);
  --success: #22d69e;
  --warning: #f5a623;
  --danger: #ff5470;
  --info: #5dade2;
  --shadow-glass: 0 8px 32px rgba(131, 110, 249, 0.12);
  --shadow-glass-hover: 0 12px 40px rgba(131, 110, 249, 0.25);
  --text-glow-accent: 0 0 20px rgba(131, 110, 249, 0.45);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Space Grotesk', 'Inter', ui-sans-serif, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-family: var(--font-sans);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg-base);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text-primary);
  background: var(--bg-base);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(131, 110, 249, 0.18), transparent 60%),
    radial-gradient(ellipse 60% 50% at 100% 100%, rgba(160, 5, 93, 0.08), transparent 60%);
  background-attachment: fixed;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}

::selection {
  background: var(--accent-glow);
  color: var(--text-primary);
}

a {
  color: var(--accent-hover);
  text-decoration: none;
  transition: color 200ms ease, text-shadow 200ms ease;
}

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
*::-webkit-scrollbar-track {
  background: transparent;
}
*::-webkit-scrollbar-thumb {
  background: rgba(131, 110, 249, 0.25);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
*::-webkit-scrollbar-thumb:hover {
  background: rgba(131, 110, 249, 0.45);
  background-clip: padding-box;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 50;
  transform: translateY(-150%);
  border-radius: var(--radius-md);
  background: var(--accent);
  color: var(--text-primary);
  padding: 8px 12px;
  font-weight: 600;
}

.skip-link:focus {
  transform: translateY(0);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 64px;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(10, 6, 18, 0.75);
  padding: 0 28px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  text-decoration: none;
  transition: color 200ms ease;
}

.brand:hover {
  text-decoration: none;
  color: var(--text-primary);
}

.brand-logo {
  flex-shrink: 0;
  color: var(--accent);
  filter: drop-shadow(0 0 18px rgba(131, 110, 249, 0.5));
  transition: filter 250ms ease;
}

.brand:hover .brand-logo {
  filter: drop-shadow(0 0 24px rgba(131, 110, 249, 0.7));
}

.brand-text {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.brand small {
  margin-top: 2px;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.badge-alpha {
  display: inline-flex;
  align-items: center;
  margin-left: 4px;
  padding: 2px 8px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-hover);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.toplinks {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toplinks a,
.primary-link {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 14px;
  text-decoration: none;
  transition: all 200ms ease;
}

.toplinks a:hover,
.primary-link:hover {
  border-color: var(--border-strong);
  background: var(--accent-soft);
  color: var(--accent-hover);
  text-decoration: none;
}

.primary-link {
  background: var(--accent);
  color: var(--text-primary);
  border-color: var(--accent);
  font-weight: 600;
  box-shadow: 0 4px 24px rgba(131, 110, 249, 0.4);
}

.primary-link:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--text-primary);
}

.layout {
  display: grid;
  grid-template-columns: minmax(210px, 260px) minmax(0, 780px) minmax(180px, 240px);
  gap: 36px;
  max-width: 1320px;
  margin: 0 auto;
  padding: 36px 28px 64px;
}

.sidebar,
.toc {
  align-self: start;
  position: sticky;
  top: 88px;
}

.sidebar {
  max-height: calc(100vh - 110px);
  overflow: auto;
  padding-right: 4px;
}

.nav-section {
  margin-bottom: 26px;
}

.nav-section h2,
.toc h2 {
  margin: 0 0 10px;
  padding: 0 9px;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

.nav-section li,
.toc li {
  margin: 0;
}

.nav-section a,
.toc a {
  display: block;
  border-radius: var(--radius-md);
  border-left: 2px solid transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.4;
  padding: 7px 9px;
  text-decoration: none;
  transition: all 180ms ease;
}

.nav-section a:hover,
.toc a:hover {
  background: var(--accent-soft);
  color: var(--text-primary);
  text-decoration: none;
}

.nav-section a[aria-current="page"] {
  background: var(--accent-soft);
  border-left-color: var(--accent);
  color: var(--accent-hover);
  font-weight: 600;
}

.content {
  min-width: 0;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-glass);
  padding: 44px 48px 36px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-hover);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.prose h1 {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 3.6vw, 2.4rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--text-primary);
}

.prose h2 {
  margin: 44px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.45rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.prose h3 {
  margin: 30px 0 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  line-height: 1.3;
  color: var(--text-primary);
}

.prose p,
.prose ul,
.prose ol {
  margin: 0 0 18px;
  color: var(--text-secondary);
}

.prose ul,
.prose ol {
  padding-left: 22px;
}

.prose li {
  color: var(--text-secondary);
}

.prose li + li {
  margin-top: 5px;
}

.prose strong {
  color: var(--text-primary);
  font-weight: 600;
}

.prose a {
  color: var(--accent-hover);
  text-decoration: none;
  border-bottom: 1px dashed rgba(149, 128, 255, 0.4);
  transition: all 180ms ease;
}

.prose a:hover {
  color: var(--text-primary);
  border-bottom-color: var(--accent-hover);
  text-shadow: 0 0 12px var(--accent-glow);
  text-decoration: none;
}

.prose code {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent-hover);
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 0.1em 0.4em;
}

.prose pre {
  overflow: auto;
  margin: 22px 0;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  background: rgba(10, 6, 18, 0.85);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.55;
  padding: 16px 18px;
  box-shadow: inset 0 0 0 1px rgba(131, 110, 249, 0.04);
}

.prose pre code {
  border: 0;
  background: transparent;
  color: inherit;
  padding: 0;
  font-size: inherit;
}

.prose .hint {
  margin: 24px 0;
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-md);
  background: rgba(131, 110, 249, 0.08);
  padding: 16px 18px 1px;
  color: var(--text-secondary);
}

.prose .hint p {
  color: var(--text-secondary);
}

.prose .hint-warning {
  border-color: rgba(245, 166, 35, 0.35);
  border-left-color: var(--warning);
  background: rgba(245, 166, 35, 0.08);
}

.prose .hint-info {
  border-color: rgba(93, 173, 226, 0.35);
  border-left-color: var(--info);
  background: rgba(93, 173, 226, 0.08);
}

.prose .hint-danger {
  border-color: rgba(255, 84, 112, 0.35);
  border-left-color: var(--danger);
  background: rgba(255, 84, 112, 0.08);
}

.prose .hint-success {
  border-color: rgba(34, 214, 158, 0.35);
  border-left-color: var(--success);
  background: rgba(34, 214, 158, 0.08);
}

.toc {
  color: var(--text-tertiary);
  border-left: 1px solid var(--border-subtle);
  padding-left: 14px;
}

.toc a {
  color: var(--text-tertiary);
  font-size: 0.84rem;
  padding: 5px 9px;
  border-radius: var(--radius-sm);
}

.toc a:hover {
  color: var(--accent-hover);
  background: var(--accent-soft);
}

.toc-indent {
  padding-left: 18px;
}

.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.pager-link {
  display: block;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  padding: 14px 16px;
  text-decoration: none;
  transition: all 220ms ease;
}

.pager-link:hover {
  border-color: var(--border-strong);
  background: var(--glass-bg-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glass-hover);
  text-decoration: none;
}

.pager-link small,
.pager-link span {
  display: block;
}

.pager-link small {
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pager-link span {
  margin-top: 4px;
  color: var(--text-primary);
  font-weight: 600;
}

.pager-next {
  text-align: right;
}

.not-found {
  max-width: 680px;
  margin: 80px auto;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-glass);
  padding: 44px 48px;
  color: var(--text-secondary);
}

.not-found h1 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 2.3rem;
  line-height: 1.1;
  color: var(--text-primary);
  text-shadow: var(--text-glow-accent);
}

.not-found .primary-link {
  margin-top: 12px;
}

.glow-text {
  text-shadow: var(--text-glow-accent);
}

.footer {
  margin-top: 24px;
  border-top: 1px solid var(--border-subtle);
  padding: 28px 28px 36px;
}

.footer-inner {
  max-width: 1320px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 12px;
  color: var(--text-tertiary);
}

.footer-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-tagline {
  color: var(--text-secondary);
  font-weight: 500;
}

.footer-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer a {
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color 180ms ease;
}

.footer a:hover {
  color: var(--accent-hover);
  text-decoration: none;
}

.footer-dot {
  display: inline-block;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-tertiary);
}

@media (max-width: 1120px) {
  .layout {
    grid-template-columns: minmax(190px, 230px) minmax(0, 1fr);
  }

  .toc {
    display: none;
  }
}

@media (max-width: 760px) {
  .topbar {
    height: 56px;
    padding: 0 16px;
    gap: 12px;
  }

  .brand small {
    display: none;
  }

  .badge-alpha {
    display: none;
  }

  .toplinks {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .toplinks a {
    padding: 6px 10px;
    font-size: 0.8rem;
  }

  .layout {
    display: block;
    padding: 20px 14px 40px;
  }

  .sidebar {
    position: static;
    max-height: none;
    margin-bottom: 22px;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    background: var(--glass-bg);
    padding: 14px;
  }

  .nav-section {
    margin-bottom: 18px;
  }

  .content {
    padding: 28px 22px 26px;
  }

  .prose h1 {
    font-size: 1.85rem;
  }

  .prose h2 {
    font-size: 1.25rem;
  }

  .pager {
    grid-template-columns: 1fr;
  }

  .pager-next {
    text-align: left;
  }

  .footer {
    padding: 24px 16px 32px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .not-found {
    margin: 40px 14px;
    padding: 28px 22px;
  }
}