:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-muted: #f8fafc;
  --text: #172033;
  --text-muted: #667085;
  --border: #e4e7ec;
  --border-strong: #d0d5dd;
  --accent: #4f46e5;
  --accent-strong: #3730a3;
  --accent-soft: #eef2ff;
  --success-soft: #ecfdf3;
  --header: #0b1020;
  --header-text: #f8fafc;
  --sidebar-width: 292px;
  --header-height: 68px;
  --content-width: 920px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow-md: 0 16px 40px rgba(16, 24, 40, 0.08);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent-strong);
}

img {
  max-width: 100%;
  height: auto;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 9999;
  padding: 10px 14px;
  border-radius: 8px;
  background: #fff;
  color: #111827;
  transform: translateY(-150%);
  transition: transform 0.15s ease;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(11, 16, 32, 0.96);
  color: var(--header-text);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 26px;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand:hover {
  color: inherit;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(145deg, #6366f1, #4338ca);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.2;
}

.brand__text strong {
  overflow: hidden;
  font-size: 15px;
  letter-spacing: 0.01em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand__text span {
  margin-top: 3px;
  color: #98a2b3;
  font-size: 12px;
}

.header-actions {
  margin-left: auto;
}

.header-link {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  color: #e4e7ec;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}

.header-link:hover {
  background: rgba(255, 255, 255, 0.07);
  color: #fff;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 9px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 4px 0;
  border-radius: 999px;
  background: #fff;
}

.site-shell {
  min-height: calc(100vh - var(--header-height));
}

.sidebar {
  position: fixed;
  top: var(--header-height);
  bottom: 0;
  left: 0;
  z-index: 80;
  width: var(--sidebar-width);
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow-y: auto;
}

.sidebar__inner {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 24px 18px;
}

.sidebar-search {
  margin-bottom: 22px;
}

.sidebar-search input {
  width: 100%;
  height: 42px;
  padding: 0 13px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--surface-muted);
  color: var(--text);
  font: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.sidebar-search input:focus {
  background: #fff;
  border-color: #818cf8;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.nav-section {
  margin-bottom: 20px;
}

.nav-section__title {
  display: block;
  padding: 7px 10px;
  border-radius: 8px;
  color: #344054;
  text-decoration: none;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.nav-section__title:hover {
  background: var(--surface-muted);
  color: var(--accent-strong);
}

.docs-nav ul {
  margin: 5px 0 0;
  padding: 0;
  list-style: none;
}

.docs-nav li {
  margin: 2px 0;
}

.docs-nav li a {
  display: block;
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.35;
  transition: background 0.15s ease, color 0.15s ease;
}

.docs-nav li a:hover {
  background: var(--surface-muted);
  color: var(--text);
}

.docs-nav a.is-active {
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 700;
}

.nav-section[hidden],
.docs-nav li[hidden] {
  display: none;
}

.sidebar-footer {
  margin-top: auto;
  padding: 22px 10px 4px;
  color: #98a2b3;
  font-size: 13px;
  line-height: 1.5;
}

.sidebar-footer strong {
  color: #475467;
}

.sidebar-backdrop {
  display: none;
}

.content-wrap {
  margin-left: var(--sidebar-width);
  padding: 48px clamp(24px, 5vw, 72px) 36px;
}

.content-card {
  width: min(100%, var(--content-width));
  margin: 0 auto;
  padding: clamp(30px, 5vw, 64px);
  background: var(--surface);
  border: 1px solid rgba(228, 231, 236, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

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

.content-prose h1,
.content-prose h2,
.content-prose h3,
.content-prose h4 {
  color: #101828;
  line-height: 1.25;
  letter-spacing: -0.02em;
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.content-prose h1 {
  margin: 0 0 28px;
  font-size: clamp(2.2rem, 5vw, 3.45rem);
  font-weight: 800;
  letter-spacing: -0.045em;
}

.content-prose h2 {
  margin: 52px 0 18px;
  padding-top: 8px;
  font-size: clamp(1.55rem, 3vw, 2rem);
  font-weight: 760;
}

.content-prose h3 {
  margin: 36px 0 14px;
  font-size: 1.3rem;
  font-weight: 730;
}

.content-prose p {
  margin: 0 0 20px;
}

.content-prose strong {
  color: #101828;
}

.content-prose blockquote {
  margin: 28px 0;
  padding: 18px 22px;
  border-left: 4px solid #6366f1;
  border-radius: 0 12px 12px 0;
  background: linear-gradient(90deg, #f5f3ff, #fafaff);
  color: #344054;
}

.content-prose blockquote > :last-child {
  margin-bottom: 0;
}

.content-prose ul,
.content-prose ol {
  padding-left: 1.35rem;
  margin: 0 0 24px;
}

.content-prose li {
  margin: 7px 0;
  padding-left: 3px;
}

.content-prose hr {
  margin: 42px 0;
  border: 0;
  border-top: 1px solid var(--border);
}

.content-prose code {
  padding: 0.14em 0.38em;
  border: 1px solid #eaecf0;
  border-radius: 6px;
  background: #f8fafc;
  color: #344054;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.9em;
}

.content-prose pre {
  margin: 26px 0;
  padding: 20px;
  overflow: auto;
  border: 1px solid #25314d;
  border-radius: 13px;
  background: #111827;
  color: #e5e7eb;
  box-shadow: var(--shadow-sm);
}

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

.content-prose table {
  display: block;
  width: 100%;
  margin: 28px 0;
  overflow-x: auto;
  border-spacing: 0;
  border-collapse: separate;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.content-prose th,
.content-prose td {
  padding: 13px 15px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.content-prose th {
  background: var(--surface-muted);
  color: #344054;
  font-size: 13px;
  font-weight: 750;
}

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

.content-prose th:last-child,
.content-prose td:last-child {
  border-right: 0;
}

.content-prose img {
  display: block;
  margin: 30px auto;
  border-radius: 14px;
}

.content-prose h1 + p img,
.content-prose h1 + img {
  margin-top: 16px;
}

.mermaid-diagram {
  margin: 34px 0;
  padding: 24px;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(180deg, #ffffff, #f8fafc);
}

.mermaid-diagram .mermaid {
  min-width: 680px;
  text-align: center;
}

.mermaid-diagram svg {
  max-width: 100%;
  height: auto;
}

.site-footer {
  width: min(100%, var(--content-width));
  margin: 26px auto 0;
  display: flex;
  justify-content: center;
  gap: 8px;
  color: #98a2b3;
  font-size: 13px;
}

.site-footer a {
  color: #667085;
}

@media (max-width: 980px) {
  .nav-toggle {
    display: block;
  }

  .site-header__inner {
    gap: 14px;
    padding: 0 16px;
  }

  .brand {
    flex: 0 1 320px;
  }

  .sidebar {
    transform: translateX(-105%);
    box-shadow: 20px 0 40px rgba(16, 24, 40, 0.15);
    transition: transform 0.22s ease;
  }

  body.nav-open .sidebar {
    transform: translateX(0);
  }

  .sidebar-backdrop {
    position: fixed;
    inset: var(--header-height) 0 0;
    z-index: 70;
    background: rgba(16, 24, 40, 0.42);
    backdrop-filter: blur(2px);
  }

  body.nav-open .sidebar-backdrop {
    display: block;
  }

  .content-wrap {
    margin-left: 0;
    padding: 28px 18px 30px;
  }

  .content-card {
    padding: clamp(26px, 6vw, 48px);
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 62px;
  }

  .brand__text span,
  .header-actions {
    display: none;
  }

  .brand__mark {
    width: 34px;
    height: 34px;
  }

  .content-wrap {
    padding: 16px 10px 24px;
  }

  .content-card {
    padding: 24px 20px 34px;
    border-radius: 12px;
  }

  .content-prose h1 {
    font-size: 2.15rem;
  }

  .content-prose h2 {
    margin-top: 42px;
  }

  .mermaid-diagram {
    margin-left: -6px;
    margin-right: -6px;
    padding: 16px;
  }

  .site-footer {
    flex-wrap: wrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}