@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=Source+Serif+4:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;700;800&display=swap");

:root {
  --bg: #f5f1e7;
  --bg-strong: #fffdf8;
  --surface: rgba(255, 252, 247, 0.9);
  --surface-strong: rgba(255, 255, 255, 0.96);
  --line: rgba(16, 33, 58, 0.11);
  --line-strong: rgba(16, 33, 58, 0.18);
  --ink: #10213a;
  --ink-soft: #5c6a79;
  --sage: #0f7c72;
  --accent: #c96b2c;
  --accent-soft: #f3ccac;
  --terminal-bg: #131b27;
  --terminal-chrome: #3a4252;
  --terminal-ink: #edf4ff;
  --terminal-frame: #1e2633;
  --terminal-outline: rgba(118, 137, 170, 0.28);
  --terminal-glow: rgba(76, 201, 240, 0.12);
  --shadow-soft: 0 18px 40px rgba(16, 33, 58, 0.07);
  --shadow: 0 28px 62px rgba(16, 33, 58, 0.12);
  --radius-lg: 30px;
  --radius-md: 22px;
  --radius-sm: 14px;
  --content-width: min(100% - 2rem, 1380px);
  --article-width: min(100%, 94ch);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  color-scheme: light;
}

::selection {
  background: rgba(201, 107, 44, 0.2);
  color: var(--ink);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Source Serif 4", Georgia, serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(circle at top left, rgba(201, 107, 44, 0.055), transparent 26%),
    radial-gradient(circle at 84% 9%, rgba(15, 124, 114, 0.048), transparent 24%),
    linear-gradient(180deg, #fbf8f2 0%, #f5eee3 48%, #eef1ec 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(16, 33, 58, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 33, 58, 0.018) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: 0.032;
  mask-image: radial-gradient(circle at center, black 44%, transparent 100%);
}

a {
  color: inherit;
}

.site-shell {
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: linear-gradient(180deg, rgba(255, 252, 247, 0.92), rgba(255, 251, 246, 0.82));
  border-bottom: 1px solid rgba(16, 33, 58, 0.08);
}

.site-header-inner {
  width: var(--content-width);
  margin: 0 auto;
  padding: 1rem 0;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.brand {
  display: inline-grid;
  gap: 0.08rem;
  text-decoration: none;
}

.brand-kicker {
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sage);
}

.brand-title {
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.site-nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.site-header-actions {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  text-decoration: none;
  font-family: "Space Grotesk", system-ui, sans-serif;
  color: var(--ink-soft);
}

.site-nav a.site-nav-active {
  background: rgba(16, 33, 58, 0.08);
  color: var(--ink);
}

.reader-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.54rem 0.9rem;
  border: 1px solid rgba(15, 124, 114, 0.16);
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(244, 249, 247, 0.92)),
    rgba(255, 255, 255, 0.82);
  color: var(--ink);
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  cursor: pointer;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.7),
    0 10px 22px rgba(16, 33, 58, 0.05);
}

.reader-toggle-icon {
  position: relative;
  width: 1.28rem;
  height: 1.28rem;
  border-radius: 0.42rem;
  border: 1px solid rgba(16, 33, 58, 0.12);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(239, 244, 242, 0.94));
  overflow: hidden;
}

.reader-toggle-icon::before,
.reader-toggle-icon::after {
  content: "";
  position: absolute;
  top: 0.18rem;
  bottom: 0.18rem;
  border-radius: 999px;
}

.reader-toggle-icon::before {
  left: 0.18rem;
  width: 0.26rem;
  background: linear-gradient(180deg, var(--sage), rgba(201, 107, 44, 0.82));
}

.reader-toggle-icon::after {
  right: 0.18rem;
  width: 0.48rem;
  background: rgba(16, 33, 58, 0.12);
}

.page-shell {
  width: var(--content-width);
  margin: 0 auto;
  padding: 1.25rem 0 2.5rem;
  display: grid;
  gap: 1.15rem;
}

.doc-hero {
  position: relative;
  overflow: hidden;
  padding: 1.2rem 1.3rem 1.25rem;
  border: 1px solid rgba(16, 33, 58, 0.08);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at top right, rgba(76, 201, 240, 0.12), transparent 30%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(248, 243, 235, 0.9)),
    rgba(255, 255, 255, 0.84);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.75),
    var(--shadow-soft);
}

.breadcrumb-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink-soft);
  font-size: 0.94rem;
  margin-bottom: 0.8rem;
}

.breadcrumb-row a {
  text-decoration: none;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 0.28rem 0.66rem;
  border-radius: 999px;
  background: rgba(15, 124, 114, 0.12);
  color: var(--sage);
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.doc-title {
  margin: 0.65rem 0 0;
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: clamp(1.9rem, 3.6vw, 3.25rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
  text-wrap: balance;
}

.doc-summary {
  max-width: 74ch;
  margin: 0.8rem 0 0;
  color: var(--ink-soft);
  font-size: 1.02rem;
  line-height: 1.65;
  text-wrap: pretty;
}

.doc-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(280px, 0.88fr);
  gap: 1rem;
  align-items: stretch;
}

.doc-hero-copy {
  display: grid;
  gap: 0.9rem;
  align-content: start;
  min-width: 0;
}

.doc-meta-line,
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
}

.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.95rem;
}

.doc-meta span {
  display: inline-flex;
  align-items: center;
  padding: 0.36rem 0.72rem;
  border: 1px solid rgba(16, 33, 58, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--ink-soft);
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.32rem 0.66rem;
  border: 1px solid rgba(16, 33, 58, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.74);
  color: var(--ink-soft);
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.doc-hero-side {
  display: grid;
  min-width: 0;
}

.doc-hero-side-kicker {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  padding: 0.28rem 0.62rem;
  border-radius: 999px;
  border: 1px solid rgba(16, 33, 58, 0.08);
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink-soft);
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.doc-hero-fallback-card {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 0.95rem;
  height: 100%;
  padding: 1rem;
  border: 1px solid rgba(16, 33, 58, 0.08);
  border-radius: var(--radius-md);
  background:
    radial-gradient(circle at top right, rgba(76, 201, 240, 0.16), transparent 34%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(249, 243, 234, 0.9)),
    rgba(255, 255, 255, 0.82);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.74),
    0 18px 34px rgba(16, 33, 58, 0.06);
}

.doc-hero-fallback-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 0.24rem;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--sage), rgba(201, 107, 44, 0.78));
}

.doc-hero-fallback-card > * {
  position: relative;
  z-index: 1;
}

.doc-hero-fallback-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.doc-hero-fallback-stats div {
  display: grid;
  gap: 0.2rem;
  padding: 0.72rem 0.78rem;
  border: 1px solid rgba(16, 33, 58, 0.08);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.72);
}

.doc-hero-fallback-stats strong {
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1;
}

.doc-hero-fallback-stats span {
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.doc-hero-outline-preview {
  display: grid;
  gap: 0.55rem;
}

.doc-hero-outline-title {
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.doc-hero-outline-list {
  display: grid;
  gap: 0.35rem;
  margin: 0;
  padding-left: 1rem;
  color: var(--ink);
}

.doc-hero-outline-list li {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.45;
}

.doc-hero-side-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.doc-hero-side-meta span {
  display: inline-flex;
  align-items: center;
  padding: 0.28rem 0.56rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(16, 33, 58, 0.08);
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 1rem;
  align-items: start;
  transition: grid-template-columns 180ms ease, gap 180ms ease;
}

.content-panel,
.toc-card,
.chapter-card,
.info-card {
  border: 1px solid rgba(16, 33, 58, 0.08);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(248, 243, 235, 0.9)),
    rgba(255, 255, 255, 0.84);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.78),
    var(--shadow-soft);
}

.content-panel {
  padding: 1.2rem 1.3rem;
}

.toc-card {
  position: sticky;
  top: 5.5rem;
  padding: 1rem;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toc-card h2 {
  margin: 0 0 0.8rem;
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.toc-list {
  display: grid;
  gap: 0.18rem;
  max-height: calc(100vh - 8rem);
  overflow-y: auto;
  padding-right: 0.25rem;
}

.toc-link {
  display: block;
  padding: 0.48rem 0.62rem;
  border-radius: 0.95rem;
  color: var(--ink-soft);
  font-size: 0.93rem;
  line-height: 1.42;
  text-decoration: none;
}

.toc-link-active {
  background: rgba(15, 124, 114, 0.12);
  color: var(--sage);
}

.toc-link-depth-3 {
  padding-left: 1rem;
}

body.reader-focus-mode .page-layout {
  grid-template-columns: minmax(0, 1fr);
}

body.reader-focus-mode .page-layout > .toc-card {
  display: none;
}

body.reader-focus-mode .content-panel {
  width: min(100%, 1180px);
  justify-self: center;
}

.toc-link-depth-4 {
  padding-left: 1.35rem;
}

.chapter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 0.9rem;
  margin-top: 1rem;
}

.chapter-card {
  display: grid;
  gap: 0.55rem;
  padding: 1rem;
  text-decoration: none;
}

.chapter-card-kicker {
  color: var(--sage);
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.chapter-card-title {
  margin: 0;
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.chapter-card-summary {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
  line-height: 1.55;
}

.chapter-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.2rem;
}

.chapter-card-meta span {
  display: inline-flex;
  align-items: center;
  padding: 0.26rem 0.56rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(16, 33, 58, 0.07);
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.doc-pager {
  display: flex;
  justify-content: space-between;
  gap: 0.9rem;
}

.doc-pager a,
.doc-pager-empty {
  flex: 1 1 0;
  min-width: 0;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(16, 33, 58, 0.08);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  text-decoration: none;
}

.doc-pager-label {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--sage);
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.doc-pager-title {
  display: block;
  color: var(--ink);
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.22;
}

.site-footer {
  width: var(--content-width);
  margin: 0 auto;
  padding: 0 0 2.25rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.content-prose {
  display: block;
  font-size: 1.02rem;
  line-height: 1.72;
  color: var(--ink);
}

.content-prose > * {
  width: var(--article-width);
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}

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

.content-prose p,
.content-prose ul,
.content-prose ol,
.content-prose blockquote,
.content-prose table,
.content-prose pre,
.content-prose figure,
.content-prose details,
.content-prose form {
  margin-top: 0.38rem;
  margin-bottom: 0.6rem;
}

.content-prose p,
.content-prose li {
  text-wrap: pretty;
}

.content-prose h1,
.content-prose h2,
.content-prose h3,
.content-prose h4,
.content-prose h5,
.content-prose h6 {
  position: relative;
  font-family: "Space Grotesk", system-ui, sans-serif;
  color: var(--ink);
  letter-spacing: -0.04em;
  line-height: 1.03;
  margin-left: auto;
  margin-right: auto;
}

.content-prose h1 {
  margin-top: 0.2rem;
  font-size: clamp(1.7rem, 3vw, 2.7rem);
}

.content-prose h2 {
  margin-top: 0.95rem;
  padding-top: 0.42rem;
  border-top: 1px solid rgba(16, 33, 58, 0.09);
  font-size: clamp(1.24rem, 1.95vw, 1.72rem);
}

.content-prose h3 {
  margin-top: 0.7rem;
  padding-left: 0.72rem;
  font-size: clamp(1rem, 1.18vw, 1.22rem);
}

.content-prose h3::before,
.content-prose h4::before {
  content: "";
  position: absolute;
  top: 0.14em;
  bottom: 0.14em;
  left: 0;
  width: 3px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--sage), rgba(201, 107, 44, 0.78));
}

.content-prose h4 {
  margin-top: 0.52rem;
  padding-left: 0.62rem;
  font-size: clamp(0.95rem, 0.96vw, 1.1rem);
}

.content-prose h5,
.content-prose h6 {
  margin-top: 0.78rem;
  font-size: 0.78rem;
  line-height: 1.3;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.content-prose :is(h1, h2, h3, h4, h5, h6) + :is(p, ul, ol, blockquote, .callout, .table-wrap, figure, pre, .mermaid-shell, details, form) {
  margin-top: 0.14rem;
}

.content-prose h2 + h3,
.content-prose h3 + h4 {
  margin-top: 0.08rem;
}

.content-prose hr {
  margin: 0.5rem auto;
  border: 0;
  border-top: 1px solid var(--line);
  opacity: 0.9;
}

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

.content-prose li + li {
  margin-top: 0.36rem;
}

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

.content-prose a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.content-prose code,
.content-prose kbd {
  border-radius: 0.5rem;
  background: rgba(16, 33, 58, 0.08);
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.92em;
}

.content-prose code {
  padding: 0.18rem 0.34rem;
}

.content-prose span[data-rehype-pretty-code-figure] {
  display: inline-flex;
  vertical-align: baseline;
}

.content-prose span[data-rehype-pretty-code-figure] code {
  padding: 0.18rem 0.34rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(16, 33, 58, 0.08);
  background: rgba(16, 33, 58, 0.07);
  color: var(--ink);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.52);
}

figure[data-rehype-pretty-code-figure] {
  position: relative;
  margin: 1rem auto 1.2rem;
  width: fit-content;
  max-width: 100%;
}

.content-prose pre {
  position: relative;
  display: block;
  width: fit-content;
  max-width: 100%;
  min-width: min(100%, 31rem);
  overflow-x: auto;
  padding: 1.9rem 1.08rem 0.96rem;
  border: 1px solid var(--terminal-outline);
  border-radius: 1.28rem;
  color: var(--terminal-ink);
  background:
    radial-gradient(circle at top right, rgba(76, 201, 240, 0.16), transparent 24%),
    radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.1), transparent 28%),
    linear-gradient(180deg, rgba(61, 70, 88, 0.96) 0 1.52rem, rgba(16, 22, 31, 0.992) 1.52rem 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.07),
    inset 0 0 0 1px rgba(255, 255, 255, 0.02),
    0 26px 52px rgba(8, 14, 24, 0.22),
    0 0 0 1px rgba(255, 255, 255, 0.025);
  scrollbar-gutter: stable both-edges;
  scrollbar-color: rgba(120, 147, 188, 0.6) rgba(255, 255, 255, 0.06);
}

.content-prose pre::before {
  content: "";
  position: absolute;
  top: 0.67rem;
  left: 0.86rem;
  width: 0.52rem;
  height: 0.52rem;
  border-radius: 999px;
  background: #ff6b3d;
  box-shadow:
    0.96rem 0 0 #f4b844,
    1.92rem 0 0 #79c36a;
}

.content-prose pre::after {
  content: "";
  position: absolute;
  top: 1.44rem;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(148, 163, 184, 0.05), rgba(148, 163, 184, 0.18), rgba(148, 163, 184, 0.05));
}

.content-prose pre code {
  display: block;
  min-width: max-content;
  padding: 0;
  background: transparent;
  color: var(--terminal-ink);
  border-radius: 0;
  font-size: 0.92rem;
  line-height: 1.44;
  letter-spacing: -0.01em;
  tab-size: 2;
}

.content-prose :is(pre, figure[data-rehype-pretty-code-figure]) ::selection,
.content-prose .mermaid-shell ::selection {
  background: rgba(76, 201, 240, 0.24);
  color: #f7fbff;
}

.content-prose :is(pre, figure[data-rehype-pretty-code-figure]) a,
.content-prose .mermaid-shell a {
  color: #8ddff7;
  text-decoration-color: rgba(141, 223, 247, 0.42);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
  background: transparent;
  box-shadow: none;
}

.content-prose pre [data-line] {
  display: block;
  margin: 0 -0.58rem;
  padding: 0.03rem 0.58rem;
  border-radius: 0.42rem;
  transition: background 160ms ease, color 160ms ease;
}

.content-prose .table-wrap {
  position: relative;
  width: 100%;
  overflow-x: auto;
  padding: 0.42rem;
  border: 1px solid rgba(16, 33, 58, 0.08);
  border-radius: 1.28rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(247, 242, 234, 0.95)),
    rgba(255, 255, 255, 0.82);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.74),
    0 16px 34px rgba(16, 33, 58, 0.05);
  scrollbar-gutter: stable both-edges;
}

.content-prose table {
  width: 100%;
  min-width: 46rem;
  border-collapse: separate;
  border-spacing: 0;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 1rem;
  overflow: hidden;
}

.content-prose thead {
  background:
    linear-gradient(180deg, rgba(243, 246, 249, 0.96), rgba(234, 239, 245, 0.9)),
    rgba(16, 33, 58, 0.04);
}

.content-prose th,
.content-prose td {
  padding: 0.82rem 1rem;
  border-bottom: 1px solid rgba(16, 33, 58, 0.08);
  vertical-align: middle;
  font-size: 0.96rem;
  line-height: 1.56;
  overflow-wrap: anywhere;
}

.content-prose th {
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-weight: 800;
}

.content-prose th + th,
.content-prose td + td {
  border-left: 1px solid rgba(16, 33, 58, 0.055);
}

.content-prose td :is(p, ul, ol, blockquote, .callout, figure, pre, details, form),
.content-prose th :is(p, ul, ol, blockquote, .callout, figure, pre, details, form) {
  width: 100%;
  max-width: 100%;
  margin: 0.35rem 0;
}

.content-prose td .katex-display,
.content-prose th .katex-display {
  width: 100%;
  max-width: 100%;
  margin: 0.18rem 0;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.08rem 0 0.1rem;
  scrollbar-width: thin;
}

.content-prose td .katex-display > .katex,
.content-prose th .katex-display > .katex {
  display: inline-block;
  min-width: max-content;
  max-width: none;
}

.content-prose td .katex,
.content-prose th .katex {
  white-space: nowrap;
}

.content-prose figure,
.content-prose img,
.content-prose picture,
.content-prose svg,
.content-prose canvas,
.content-prose video,
.content-prose iframe {
  max-width: 100%;
}

.content-prose img,
.content-prose video,
.content-prose iframe,
.content-prose .content-media {
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 24px rgba(16, 33, 58, 0.06);
}

.content-prose .katex svg {
  max-width: none;
  height: inherit;
  border-radius: 0;
  box-shadow: none;
}

.content-prose .katex .x-arrow svg {
  width: auto !important;
  min-width: 100%;
  max-width: none !important;
}

.content-prose figure {
  display: grid;
  justify-items: center;
}

.content-prose figcaption {
  width: min(100%, 42rem);
  padding-top: 0.62rem;
  border-top: 1px solid rgba(16, 33, 58, 0.08);
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.56;
  text-align: center;
}

.content-prose blockquote,
.content-prose .callout {
  position: relative;
  overflow: hidden;
  padding: 1.1rem 1.18rem 1.1rem 1.42rem;
  border: 1px solid rgba(15, 124, 114, 0.14);
  border-radius: 1.45rem;
  background:
    radial-gradient(circle at top right, rgba(76, 201, 240, 0.12), transparent 32%),
    linear-gradient(180deg, rgba(232, 246, 244, 0.94), rgba(255, 255, 255, 0.92)),
    rgba(15, 124, 114, 0.08);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.68),
    0 16px 34px rgba(16, 33, 58, 0.055);
}

.content-prose blockquote::after,
.content-prose .callout::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 0.32rem;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--sage), rgba(76, 201, 240, 0.9), rgba(255, 255, 255, 0.15));
}

.content-prose .callout {
  border-color: rgba(201, 107, 44, 0.16);
  background:
    radial-gradient(circle at top right, rgba(243, 204, 172, 0.22), transparent 30%),
    linear-gradient(180deg, rgba(253, 245, 236, 0.95), rgba(255, 255, 255, 0.92)),
    rgba(201, 107, 44, 0.08);
}

.content-prose .callout::after {
  background: linear-gradient(180deg, var(--accent), rgba(249, 115, 22, 0.86), rgba(255, 255, 255, 0.18));
}

.content-prose .callout::before {
  content: attr(data-callout-title);
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin-bottom: 0.55rem;
  padding: 0.28rem 0.62rem;
  border: 1px solid rgba(201, 107, 44, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.content-prose .callout-note::before {
  color: var(--sage);
  border-color: rgba(15, 124, 114, 0.16);
}

.content-prose .callout-error {
  border-color: rgba(180, 55, 55, 0.18);
  background:
    radial-gradient(circle at top right, rgba(233, 80, 80, 0.16), transparent 28%),
    linear-gradient(180deg, rgba(252, 240, 240, 0.96), rgba(255, 255, 255, 0.92));
}

.content-prose .callout-error::after {
  background: linear-gradient(180deg, #b43737, rgba(233, 80, 80, 0.86), rgba(255, 255, 255, 0.18));
}

.content-prose .katex-display {
  display: block;
  width: var(--article-width);
  max-width: 100%;
  margin: 0.3rem auto 0.45rem;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.08rem 0 0.12rem;
  scrollbar-gutter: stable both-edges;
}

.content-prose .katex-display > .katex {
  display: inline-block;
  min-width: max-content;
}

.content-prose .mermaid-shell {
  margin: 1rem auto 1.2rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background:
    linear-gradient(180deg, rgba(23, 29, 42, 0.96), rgba(17, 22, 33, 0.98)),
    rgba(17, 22, 33, 0.98);
  color: #eef4ff;
  overflow-x: auto;
}

.heading-anchor {
  margin-left: 0.45rem;
  opacity: 0.38;
  text-decoration: none;
  color: rgba(16, 33, 58, 0.26);
}

.content-prose .footnotes {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.content-prose .highlighted-line {
  display: block;
  margin: 0 -1.2rem;
  padding: 0 1.2rem;
  border-left: 2px solid rgba(56, 189, 248, 0.78);
  background: linear-gradient(90deg, rgba(76, 201, 240, 0.16), rgba(76, 201, 240, 0.08) 44%, rgba(76, 201, 240, 0));
}

.content-prose .highlighted-chars {
  border-radius: 0.3rem;
  background: rgba(255, 190, 92, 0.18);
  box-shadow: inset 0 0 0 1px rgba(255, 190, 92, 0.16);
}

@media (hover: hover) and (pointer: fine) {
  .chapter-card:hover,
  .doc-pager a:hover {
    transform: translateY(-2px);
    border-color: rgba(16, 33, 58, 0.14);
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.76),
      0 24px 44px rgba(16, 33, 58, 0.1);
  }

  .toc-link:hover {
    background: rgba(16, 33, 58, 0.05);
    color: var(--ink);
  }

  .content-prose a:hover {
    color: #b55d24;
    text-decoration-color: rgba(181, 93, 36, 0.55);
  }

  .content-prose :is(pre, figure[data-rehype-pretty-code-figure], .mermaid-shell) a:hover {
    color: #cfefff;
    text-decoration-color: rgba(141, 223, 247, 0.68);
    background: transparent;
  }

  .content-prose pre [data-line]:hover {
    background: linear-gradient(90deg, rgba(76, 201, 240, 0.1), rgba(76, 201, 240, 0.03) 56%, transparent);
  }
}

@media (max-width: 1120px) {
  .page-layout {
    grid-template-columns: 1fr;
  }

  .toc-card {
    position: static;
  }

  .doc-hero-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  body::before {
    display: none;
  }

  .site-header-inner,
  .page-shell,
  .site-footer {
    width: min(100% - 1rem, 100%);
  }

  .site-header-inner {
    flex-wrap: wrap;
    padding: 0.78rem 0;
  }

  .site-header-actions {
    width: 100%;
    justify-content: space-between;
  }

  .site-nav {
    flex: 1 1 auto;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .doc-hero,
  .content-panel,
  .toc-card,
  .chapter-card {
    border-radius: 1.4rem;
  }

  .doc-hero {
    padding: 1rem;
  }

  .doc-hero-fallback-stats {
    grid-template-columns: 1fr;
  }

  .content-panel {
    padding: 1rem;
  }

  .content-prose {
    font-size: 0.98rem;
  }

  .content-prose pre,
  .content-prose .table-wrap,
  .content-prose .katex-display,
  .content-prose figure {
    width: 100%;
  }

  figure[data-rehype-pretty-code-figure] {
    width: 100%;
  }

  .doc-pager {
    flex-direction: column;
  }
}