/* ==========================================================================
   Omni Browser — Documentation Design System
   Pure CSS, dark-first, Material 3 inspired, subtle glassmorphism.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  /* Typography — matches the RebelRoot base site */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', 'Fira Code', Menlo, Consolas, monospace;

  /* Type scale (1rem = 16px) */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Layout */
  --header-height: 64px;
  --sidebar-width: 284px;
  --toc-width: 232px;
  --content-max: 760px;
  --page-max: 1440px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 0.15s;
  --dur: 0.28s;
  --dur-slow: 0.5s;

  /* Z-index */
  --z-header: 100;
  --z-sidebar: 90;
  --z-totop: 80;
  --z-overlay: 200;
  --z-modal: 300;
}

/* Dark theme (default) — RebelRoot signature red */
:root,
[data-theme='dark'] {
  color-scheme: dark;

  --bg: #09090b;
  --bg-subtle: #0e0e11;
  --bg-inset: #0a0a0c;
  --card: #141417;
  --card-hover: #1a1a1f;
  --card-active: #202027;

  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --border-subtle: rgba(255, 255, 255, 0.05);

  --text: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;

  --primary: #ef4444;
  --primary-hover: #f05252;
  --primary-fg: #ffffff;
  --primary-subtle: rgba(239, 68, 68, 0.13);
  --primary-text: #f87171;

  --accent: #ef4444;
  --accent-subtle: rgba(239, 68, 68, 0.12);
  --accent-text: #f87171;

  --success: #00d084;
  --success-subtle: rgba(0, 208, 132, 0.12);
  --warning: #ffb020;
  --warning-subtle: rgba(255, 176, 32, 0.12);
  --danger: #ef4444;
  --danger-subtle: rgba(239, 68, 68, 0.12);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px -2px rgba(0, 0, 0, 0.4), 0 2px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 24px 48px -12px rgba(0, 0, 0, 0.55);

  /* Syntax highlighting */
  --syn-com: #5b6478;
  --syn-kw: #f87171;
  --syn-str: #6ee7b7;
  --syn-num: #fcd34d;
  --syn-fn: #7dd3fc;
  --syn-type: #f9a8d4;
  --syn-punc: #94a3b8;
  --code-bg: #0c0c0f;
}

/* Light theme — RebelRoot signature red */
[data-theme='light'] {
  color-scheme: light;

  --bg: #f8fafc;
  --bg-subtle: #ffffff;
  --bg-inset: #eef1f5;
  --card: #ffffff;
  --card-hover: #f6f7f9;
  --card-active: #fdecec;

  --border: rgba(15, 23, 42, 0.09);
  --border-strong: rgba(15, 23, 42, 0.18);
  --border-subtle: rgba(15, 23, 42, 0.05);

  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --primary: #ef4444;
  --primary-hover: #dc2626;
  --primary-fg: #ffffff;
  --primary-subtle: rgba(239, 68, 68, 0.09);
  --primary-text: #dc2626;

  --accent: #ef4444;
  --accent-subtle: rgba(239, 68, 68, 0.09);
  --accent-text: #dc2626;

  --success: #059669;
  --success-subtle: rgba(5, 150, 105, 0.1);
  --warning: #d97706;
  --warning-subtle: rgba(217, 119, 6, 0.1);
  --danger: #dc2626;
  --danger-subtle: rgba(220, 38, 38, 0.1);

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 16px -4px rgba(15, 23, 42, 0.12), 0 2px 6px -2px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 24px 48px -16px rgba(15, 23, 42, 0.2);

  --syn-com: #94a3b8;
  --syn-kw: #dc2626;
  --syn-str: #059669;
  --syn-num: #d97706;
  --syn-fn: #0284c7;
  --syn-type: #db2777;
  --syn-punc: #64748b;
  --code-bg: #0c0c0f; /* code blocks stay dark in both themes for contrast */
}

/* --------------------------------------------------------------------------
   2. Reset & base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-height: 100vh;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
}

img,
picture,
svg,
video {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  padding: 0;
}

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

/* Focus visibility (a11y) */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Skip link */
.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: calc(var(--z-modal) + 1);
  padding: 10px 18px;
  background: var(--primary);
  color: var(--primary-fg);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: top var(--dur-fast) var(--ease);
}
.skip-link:focus {
  top: 16px;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
  background-clip: content-box;
}

/* --------------------------------------------------------------------------
   3. Ambient background
   -------------------------------------------------------------------------- */
.bg-ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: var(--bg);
}

/* --------------------------------------------------------------------------
   4. Reading progress bar
   -------------------------------------------------------------------------- */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: calc(var(--z-header) + 1);
  background: transparent;
}
.reading-progress__bar {
  height: 100%;
  width: 0%;
  background: var(--primary);
  transition: width 0.1s linear;
}

/* --------------------------------------------------------------------------
   5. Header
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 24px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.logo {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.logo__mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: var(--primary);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.logo__mark svg {
  width: 20px;
  height: 20px;
}
.logo__name {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo__name small {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.logo__divider {
  width: 1px;
  height: 22px;
  background: var(--border-strong);
  margin: 0 2px;
}

.header-search {
  flex: 1;
  max-width: 420px;
  margin: 0 auto;
}
.search-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: var(--text-sm);
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.search-trigger:hover {
  border-color: var(--border-strong);
  color: var(--text-secondary);
}
.search-trigger svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.search-trigger__label {
  flex: 1;
  text-align: left;
}
.search-trigger kbd {
  margin-left: auto;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.header-link {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.header-link:hover {
  color: var(--text);
  background: var(--card);
}
.header-link svg {
  width: 18px;
  height: 18px;
}
.header-link .stars {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--text);
}

.icon-btn {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.icon-btn:hover {
  color: var(--text);
  background: var(--card);
}
.icon-btn svg {
  width: 19px;
  height: 19px;
}

.version-select {
  padding: 7px 10px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  cursor: pointer;
}

.hamburger {
  display: none;
}

/* --------------------------------------------------------------------------
   6. Layout grid
   -------------------------------------------------------------------------- */
.docs-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr) var(--toc-width);
  gap: 0;
  max-width: var(--page-max);
  margin: 0 auto;
  align-items: start;
}

/* --------------------------------------------------------------------------
   7. Sidebar
   -------------------------------------------------------------------------- */
.sidebar {
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
  padding: 28px 16px 48px 24px;
  border-right: 1px solid var(--border-subtle);
  scrollbar-width: thin;
}

.sidebar__filter {
  position: relative;
  margin-bottom: 18px;
}
.sidebar__filter input {
  width: 100%;
  padding: 8px 12px 8px 34px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--text);
  transition: border-color var(--dur-fast) var(--ease);
}
.sidebar__filter input:focus {
  outline: none;
  border-color: var(--primary);
}
.sidebar__filter svg {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  width: 15px;
  height: 15px;
  color: var(--text-muted);
  pointer-events: none;
}

.sidebar__group {
  margin-bottom: 6px;
}
.sidebar__heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 8px 10px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--dur-fast) var(--ease);
}
.sidebar__heading:hover {
  color: var(--text-secondary);
}
.sidebar__heading .chev {
  width: 14px;
  height: 14px;
  transition: transform var(--dur) var(--ease);
}
.sidebar__group.collapsed .chev {
  transform: rotate(-90deg);
}
.sidebar__group.collapsed .sidebar__links {
  display: none;
}

.sidebar__links {
  list-style: none;
  margin: 2px 0 8px;
  padding: 0;
}
.sidebar__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px 7px 14px;
  margin: 1px 0;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.sidebar__link::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 50%;
  transform: translateY(-50%) scaleY(0);
  width: 3px;
  height: 18px;
  border-radius: var(--radius-full);
  background: var(--primary);
  transition: transform var(--dur) var(--ease);
}
.sidebar__link:hover {
  color: var(--text);
  background: var(--card);
}
.sidebar__link.active {
  color: var(--primary-text);
  background: var(--primary-subtle);
  font-weight: 600;
}
.sidebar__link.active::before {
  transform: translateY(-50%) scaleY(1);
}
.sidebar__link .badge {
  margin-left: auto;
}
.sidebar__link.hidden {
  display: none;
}

/* --------------------------------------------------------------------------
   8. Content / prose
   -------------------------------------------------------------------------- */
.content {
  min-width: 0;
  padding: 40px 56px 96px;
}
.content__inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
  font-size: var(--text-sm);
  color: var(--text-muted);
}
.breadcrumbs a {
  color: var(--text-muted);
  transition: color var(--dur-fast) var(--ease);
}
.breadcrumbs a:hover {
  color: var(--primary-text);
}
.breadcrumbs .sep {
  opacity: 0.5;
}
.breadcrumbs .current {
  color: var(--text-secondary);
  font-weight: 500;
}

/* Page header meta */
.page-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 18px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  font-size: var(--text-sm);
  color: var(--text-muted);
}
.page-meta__item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.page-meta__item svg {
  width: 15px;
  height: 15px;
}
.page-meta__actions {
  margin-left: auto;
  display: flex;
  gap: 4px;
}
.page-meta__actions button {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 9px;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.page-meta__actions button:hover {
  color: var(--text);
  background: var(--card);
}
.page-meta__actions svg {
  width: 14px;
  height: 14px;
}

/* Prose typography */
.prose {
  font-size: var(--text-lg);
  line-height: 1.75;
  color: var(--text);
}
.prose > *:first-child {
  margin-top: 0;
}
.prose h1 {
  font-size: var(--text-5xl);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.08;
  margin: 0 0 8px;
}
.prose .lead {
  font-size: var(--text-xl);
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.prose h2 {
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin: 56px 0 18px;
  padding-top: 8px;
  scroll-margin-top: calc(var(--header-height) + 24px);
}
.prose h3 {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin: 40px 0 14px;
  scroll-margin-top: calc(var(--header-height) + 24px);
}
.prose h4 {
  font-size: var(--text-xl);
  font-weight: 650;
  margin: 32px 0 12px;
  scroll-margin-top: calc(var(--header-height) + 24px);
}
.prose p {
  margin: 0 0 20px;
}
.prose a:not(.card):not(.btn) {
  color: var(--primary-text);
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 3px;
  transition: text-decoration-color var(--dur-fast) var(--ease);
}
.prose a:not(.card):not(.btn):hover {
  text-decoration-color: currentColor;
}

/* Heading anchor links */
.heading-anchor {
  opacity: 0;
  margin-left: 10px;
  color: var(--text-muted);
  font-weight: 400;
  text-decoration: none;
  transition: opacity var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.prose h2:hover .heading-anchor,
.prose h3:hover .heading-anchor,
.prose h4:hover .heading-anchor {
  opacity: 1;
}
.heading-anchor:hover {
  color: var(--primary-text);
}

.prose ul,
.prose ol {
  margin: 0 0 20px;
  padding-left: 26px;
}
.prose li {
  margin: 8px 0;
}
.prose li::marker {
  color: var(--primary-text);
}
.prose ul li {
  list-style: none;
  position: relative;
}
.prose ul li::before {
  content: '';
  position: absolute;
  left: -22px;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--primary-text);
  transform: translateY(-50%) rotate(45deg);
}

.prose strong {
  font-weight: 650;
  color: var(--text);
}

.prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

.prose blockquote {
  margin: 24px 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--primary);
  color: var(--text-secondary);
  font-style: normal;
}
.prose blockquote p:last-child {
  margin-bottom: 0;
}

/* Inline code */
.prose code:not(pre code) {
  font-family: var(--font-mono);
  font-size: 0.85em;
  padding: 2px 7px;
  background: var(--primary-subtle);
  color: var(--primary-text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-weight: 500;
  white-space: nowrap;
}

.prose img {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin: 24px 0;
}

.prose figure {
  margin: 28px 0;
}
.prose figcaption {
  margin-top: 12px;
  text-align: center;
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* kbd */
kbd {
  font-family: var(--font-mono);
  font-size: 0.78em;
  font-weight: 600;
  padding: 2px 7px;
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   9. Code blocks
   -------------------------------------------------------------------------- */
.code-block {
  margin: 24px 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--code-bg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.code-block__header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: #94a3b8;
}
.code-block__dots {
  display: flex;
  gap: 6px;
}
.code-block__dots span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}
.code-block__file {
  font-weight: 600;
  color: #cbd5e1;
}
.code-block__lang {
  margin-left: auto;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.68rem;
  color: #64748b;
}
.code-block__copy {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 9px;
  margin-left: 8px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  color: #94a3b8;
  background: rgba(255, 255, 255, 0.05);
  transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.code-block__copy:hover {
  color: #e2e8f0;
  background: rgba(255, 255, 255, 0.1);
}
.code-block__copy svg {
  width: 13px;
  height: 13px;
}
.code-block__copy.copied {
  color: var(--success);
}

.code-block__body {
  overflow-x: auto;
  padding: 16px 0;
}
.code-block pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  color: #e2e8f0;
  counter-reset: line;
}
.code-line {
  display: block;
  padding: 0 20px 0 0;
  min-height: 1.7em;
}
.code-line::before {
  counter-increment: line;
  content: counter(line);
  display: inline-block;
  width: 3.2em;
  margin-right: 20px;
  padding-right: 16px;
  text-align: right;
  color: #3b4459;
  border-right: 1px solid rgba(255, 255, 255, 0.05);
  user-select: none;
}
.code-line.highlight {
  background: var(--primary-subtle);
  box-shadow: inset 3px 0 0 var(--primary);
}
.code-line.highlight::before {
  color: var(--primary-text);
}

/* Syntax tokens (code blocks are always dark) */
.tok-com { color: var(--syn-com); font-style: italic; }
.tok-kw { color: var(--syn-kw); }
.tok-str { color: var(--syn-str); }
.tok-num { color: var(--syn-num); }
.tok-fn { color: var(--syn-fn); }
.tok-type { color: var(--syn-type); }
.tok-punc { color: var(--syn-punc); }

/* --------------------------------------------------------------------------
   10. Callouts
   -------------------------------------------------------------------------- */
.callout {
  display: flex;
  gap: 14px;
  margin: 24px 0;
  padding: 16px 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  border-left-width: 3px;
  background: var(--card);
  font-size: var(--text-base);
  line-height: 1.65;
}
.callout__icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  margin-top: 1px;
}
.callout__body > *:last-child {
  margin-bottom: 0;
}
.callout__title {
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  margin-bottom: 4px;
  display: block;
}
.callout p {
  margin: 0 0 10px;
  color: var(--text-secondary);
}
.callout code:not(pre code) {
  font-size: 0.85em;
}

.callout--note { border-left-color: var(--primary); }
.callout--note .callout__icon, .callout--note .callout__title { color: var(--primary-text); }
.callout--tip { border-left-color: var(--success); background: var(--success-subtle); }
.callout--tip .callout__icon, .callout--tip .callout__title { color: var(--success); }
.callout--warning { border-left-color: var(--warning); background: var(--warning-subtle); }
.callout--warning .callout__icon, .callout--warning .callout__title { color: var(--warning); }
.callout--danger { border-left-color: var(--danger); background: var(--danger-subtle); }
.callout--danger .callout__icon, .callout--danger .callout__title { color: var(--danger); }
.callout--experimental { border-left-color: var(--accent); background: var(--accent-subtle); }
.callout--experimental .callout__icon, .callout--experimental .callout__title { color: var(--accent-text); }
.callout--deprecated { border-left-color: var(--text-muted); }
.callout--deprecated .callout__icon, .callout--deprecated .callout__title { color: var(--text-muted); }

/* --------------------------------------------------------------------------
   11. Tables
   -------------------------------------------------------------------------- */
.table-wrap {
  margin: 24px 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  line-height: 1.5;
}
.prose table th {
  text-align: left;
  padding: 12px 16px;
  background: var(--bg-inset);
  font-weight: 650;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.prose table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}
.prose table tr:last-child td {
  border-bottom: none;
}
.prose table tbody tr {
  transition: background var(--dur-fast) var(--ease);
}
.prose table tbody tr:hover {
  background: var(--card);
}
.prose table td strong {
  color: var(--text);
}
.prose table .yes { color: var(--success); font-weight: 700; }
.prose table .no { color: var(--text-muted); }
.prose table .partial { color: var(--warning); font-weight: 600; }

/* --------------------------------------------------------------------------
   12. Cards & grids
   -------------------------------------------------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin: 24px 0;
}
.card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
a.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  background: var(--card-hover);
  box-shadow: var(--shadow-md);
}
.card__icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: var(--primary-subtle);
  color: var(--primary-text);
  font-size: 20px;
}
.card__title {
  font-size: var(--text-lg);
  font-weight: 650;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 6px;
}
.card__title .arrow {
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  color: var(--primary-text);
}
a.card:hover .card__title .arrow {
  opacity: 1;
  transform: translateX(0);
}
.card__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   13. Badges & chips
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 9px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  background: var(--primary-subtle);
  color: var(--primary-text);
  white-space: nowrap;
}
.badge--accent { background: var(--accent-subtle); color: var(--accent-text); }
.badge--success { background: var(--success-subtle); color: var(--success); }
.badge--warning { background: var(--warning-subtle); color: var(--warning); }
.badge--danger { background: var(--danger-subtle); color: var(--danger); }
.badge--muted { background: var(--card); color: var(--text-muted); border: 1px solid var(--border); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   14. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 22px;
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: transform var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
  cursor: pointer;
  white-space: nowrap;
}
.btn:active {
  transform: translateY(1px);
}
.btn svg {
  width: 17px;
  height: 17px;
}
.btn--primary {
  background: var(--primary);
  color: var(--primary-fg);
}
.btn--primary:hover {
  background: var(--primary-hover);
}
.btn--secondary {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn--secondary:hover {
  background: var(--card-hover);
  border-color: var(--text-muted);
}
.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn--ghost:hover {
  background: var(--card);
  color: var(--text);
}
.btn--lg {
  padding: 14px 28px;
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

/* --------------------------------------------------------------------------
   15. Tabs
   -------------------------------------------------------------------------- */
.tabs {
  margin: 24px 0;
}
.tab-list {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
  overflow-x: auto;
}
.tab-list [role='tab'] {
  padding: 10px 16px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.tab-list [role='tab']:hover {
  color: var(--text-secondary);
}
.tab-list [role='tab'][aria-selected='true'] {
  color: var(--primary-text);
  border-bottom-color: var(--primary);
}
.tab-panel {
  padding-top: 8px;
}
.tab-panel[hidden] {
  display: none;
}

/* --------------------------------------------------------------------------
   16. Accordion
   -------------------------------------------------------------------------- */
.accordion {
  margin: 24px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.accordion-item {
  border-bottom: 1px solid var(--border);
}
.accordion-item:last-child {
  border-bottom: none;
}
.accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 18px 22px;
  font-size: var(--text-base);
  font-weight: 600;
  text-align: left;
  color: var(--text);
  transition: background var(--dur-fast) var(--ease);
}
.accordion-trigger:hover {
  background: var(--card);
}
.accordion-trigger .chev {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--text-muted);
  transition: transform var(--dur) var(--ease);
}
.accordion-item.open .accordion-trigger .chev {
  transform: rotate(180deg);
}
.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--dur) var(--ease);
}
.accordion-panel__inner {
  padding: 0 22px 20px;
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: 1.7;
}
.accordion-panel__inner > *:last-child {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   17. Steps
   -------------------------------------------------------------------------- */
.steps {
  margin: 24px 0;
  padding-left: 0;
  list-style: none;
  counter-reset: step;
}
.steps > li {
  counter-increment: step;
  position: relative;
  padding: 0 0 28px 52px;
  list-style: none;
}
.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--primary-subtle);
  color: var(--primary-text);
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  font-weight: 700;
  font-size: var(--text-sm);
  font-family: var(--font-mono);
}
.steps > li::after {
  content: '';
  position: absolute;
  left: 17px;
  top: 40px;
  bottom: 6px;
  width: 1px;
  background: var(--border);
}
.steps > li:last-child::after {
  display: none;
}
.steps > li::marker {
  content: none;
}
.steps h3,
.steps h4 {
  margin-top: 4px;
}

/* --------------------------------------------------------------------------
   18. Table of contents
   -------------------------------------------------------------------------- */
.toc {
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
  padding: 40px 24px 48px 8px;
  font-size: var(--text-sm);
  scrollbar-width: thin;
}
.toc__title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.toc__list {
  list-style: none;
  border-left: 1px solid var(--border);
}
.toc__list li {
  list-style: none;
}
.toc__link {
  display: block;
  padding: 5px 0 5px 16px;
  margin-left: -1px;
  border-left: 1px solid transparent;
  color: var(--text-muted);
  line-height: 1.45;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.toc__link.depth-3 {
  padding-left: 30px;
  font-size: 0.82rem;
}
.toc__link:hover {
  color: var(--text-secondary);
}
.toc__link.active {
  color: var(--primary-text);
  border-left-color: var(--primary);
  font-weight: 500;
}
.toc__top {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  padding-left: 16px;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--dur-fast) var(--ease);
}
.toc__top:hover {
  color: var(--primary-text);
}
.toc__top svg {
  width: 13px;
  height: 13px;
}

/* --------------------------------------------------------------------------
   19. Pager (prev / next)
   -------------------------------------------------------------------------- */
.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.pager__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}
.pager__item:hover {
  border-color: var(--border-strong);
  background: var(--card-hover);
  transform: translateY(-2px);
}
.pager__item--next {
  text-align: right;
  align-items: flex-end;
}
.pager__label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 5px;
}
.pager__title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--primary-text);
}
.pager__item.empty {
  visibility: hidden;
}

/* --------------------------------------------------------------------------
   20. Feedback widget
   -------------------------------------------------------------------------- */
.feedback {
  margin-top: 32px;
  padding: 22px 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.feedback__text {
  font-size: var(--text-sm);
  font-weight: 600;
}
.feedback__btns {
  display: flex;
  gap: 8px;
}
.feedback__btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--dur-fast) var(--ease);
}
.feedback__btn:hover {
  border-color: var(--border-strong);
  color: var(--text);
}
.feedback__btn.selected {
  background: var(--primary-subtle);
  border-color: var(--primary);
  color: var(--primary-text);
}
.feedback__btn svg {
  width: 15px;
  height: 15px;
}
.feedback__thanks {
  font-size: var(--text-sm);
  color: var(--success);
  font-weight: 600;
}
.feedback__edit {
  margin-left: auto;
  font-size: var(--text-sm);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--dur-fast) var(--ease);
}
.feedback__edit:hover {
  color: var(--primary-text);
}
.feedback__edit svg {
  width: 14px;
  height: 14px;
}

/* --------------------------------------------------------------------------
   21. Search modal
   -------------------------------------------------------------------------- */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 12vh 20px 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);
}
.search-overlay.open {
  opacity: 1;
  visibility: visible;
}
.search-modal {
  width: 100%;
  max-width: 600px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: translateY(-8px);
  transition: transform var(--dur) var(--ease);
}
.search-overlay.open .search-modal {
  transform: translateY(0);
}
.search-modal__input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.search-modal__input-wrap > svg {
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  flex-shrink: 0;
}
.search-modal input {
  flex: 1;
  min-width: 0;
  background: none;
  border: none;
  font-size: var(--text-base);
  color: var(--text);
}
.search-modal input:focus {
  outline: none;
}
.search-modal input::placeholder {
  color: var(--text-muted);
}
.search-modal__esc {
  font-size: var(--text-xs);
  flex-shrink: 0;
}
.search-results {
  max-height: 50vh;
  overflow-y: auto;
  padding: 8px;
}
.search-results__group {
  padding: 10px 12px 4px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.search-result {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease);
}
.search-result:hover,
.search-result.active {
  background: var(--card);
}
.search-result.active {
  background: var(--primary-subtle);
}
.search-result__icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--bg-inset);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.search-result__icon svg {
  width: 16px;
  height: 16px;
}
.search-result.active .search-result__icon {
  color: var(--primary-text);
  border-color: var(--primary);
  background: var(--bg-subtle);
}
.search-result__body {
  min-width: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.search-result__title {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.search-result__title mark {
  background: none;
  color: var(--primary-text);
}
.search-result__desc {
  display: block;
  font-size: var(--text-xs);
  line-height: 1.4;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.search-result__enter {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  opacity: 0;
  color: var(--text-muted);
  transition: opacity var(--dur-fast) var(--ease);
}
.search-result.active .search-result__enter {
  opacity: 1;
  color: var(--primary-text);
}
.search-empty {
  padding: 40px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: var(--text-sm);
}
.search-modal__footer {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg-inset);
  font-size: var(--text-xs);
  color: var(--text-muted);
}
.search-modal__footer span {
  display: flex;
  align-items: center;
  gap: 5px;
}

/* --------------------------------------------------------------------------
   22. Back to top
   -------------------------------------------------------------------------- */
.to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: var(--z-totop);
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--dur) var(--ease);
}
.to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.to-top:hover {
  color: var(--primary-text);
  border-color: var(--primary);
}
.to-top svg {
  width: 20px;
  height: 20px;
}

/* --------------------------------------------------------------------------
   23. Toast
   -------------------------------------------------------------------------- */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  z-index: var(--z-modal);
  padding: 11px 20px;
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--dur) var(--ease);
  display: flex;
  align-items: center;
  gap: 8px;
}
.toast.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.toast svg {
  width: 16px;
  height: 16px;
  color: var(--success);
}

/* --------------------------------------------------------------------------
   24. Landing page
   -------------------------------------------------------------------------- */
.landing {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Announcement bar */
.announce {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px 6px 14px;
  margin-bottom: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: border-color var(--dur-fast) var(--ease);
}
.announce:hover {
  border-color: var(--border-strong);
}
.announce__pill {
  padding: 2px 10px;
  background: var(--primary-subtle);
  color: var(--primary-text);
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
}
.announce__arrow {
  color: var(--text-muted);
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
  padding: 64px 0 80px;
}
.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent-text);
  margin-bottom: 22px;
}
.hero__eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 4px var(--success-subtle);
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero h1 {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.02;
  margin-bottom: 22px;
}
.hero h1 .accent {
  color: var(--primary-text);
}
.hero__desc {
  font-size: var(--text-xl);
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 52ch;
  margin-bottom: 34px;
}
.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.hero__stats {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
}
.hero__stat {
  display: flex;
  flex-direction: column;
}
.hero__stat b {
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.hero__stat span {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* Browser mockup */
.mockup {
  position: relative;
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.mockup::after {
  content: none;
}
.mockup__bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-inset);
  border-bottom: 1px solid var(--border);
}
.mockup__dots {
  display: flex;
  gap: 7px;
}
.mockup__dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.mockup__dots span:nth-child(1) { background: #ff5f57; }
.mockup__dots span:nth-child(2) { background: #febc2e; }
.mockup__dots span:nth-child(3) { background: #28c840; }
.mockup__url {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-secondary);
}
.mockup__url svg {
  width: 13px;
  height: 13px;
  color: var(--success);
}
.mockup__body {
  padding: 24px;
  min-height: 320px;
  background: var(--bg-subtle);
}
.mockup__search {
  max-width: 340px;
  margin: 40px auto 28px;
  padding: 14px 20px;
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-md);
}
.mockup__search svg {
  width: 17px;
  height: 17px;
}
.mockup__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  max-width: 360px;
  margin: 0 auto;
}
.mockup__tile {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  background: var(--card);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  font-size: 20px;
}

/* Floating command palette on mockup */
.mockup__cmd {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  width: 78%;
  background: var(--bg-subtle);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  z-index: 2;
}
.mockup__cmd-input {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}
.mockup__cmd-input svg {
  width: 15px;
  height: 15px;
  color: var(--text-muted);
}
.mockup__cmd-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  font-size: var(--text-sm);
  color: var(--text-secondary);
}
.mockup__cmd-item.active {
  background: var(--primary-subtle);
  color: var(--primary-text);
}
.mockup__cmd-item kbd {
  margin-left: auto;
}

/* Landing sections */
.section {
  padding: 72px 0;
  border-top: 1px solid var(--border-subtle);
}
.section__head {
  max-width: 640px;
  margin-bottom: 44px;
}
.section__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-text);
  margin-bottom: 14px;
}
.section__title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}
.section__desc {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Bento grid */
.bento {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 190px;
  gap: 16px;
}
.bento__card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}
.bento__card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}
.bento__card--wide { grid-column: span 4; }
.bento__card--reg { grid-column: span 2; }
.bento__card--tall { grid-row: span 2; }
.bento__card--half { grid-column: span 3; }
.bento__glow {
  display: none;
}
.bento__icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: var(--primary-subtle);
  color: var(--primary-text);
  margin-bottom: 16px;
  font-size: 22px;
  position: relative;
  z-index: 1;
}
.bento__card h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}
.bento__card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  position: relative;
  z-index: 1;
}
.bento__link {
  margin-top: auto;
  padding-top: 14px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary-text);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  position: relative;
  z-index: 1;
}

/* Architecture diagram */
.arch {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex-wrap: wrap;
  justify-content: center;
  padding: 32px 0;
}
.arch__node {
  flex: 1;
  min-width: 180px;
  max-width: 240px;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.arch__node:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
}
.arch__node-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto 12px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: var(--primary-subtle);
  color: var(--primary-text);
  font-size: 20px;
}
.arch__node h4 {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: 4px;
}
.arch__node p {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
}
.arch__arrow {
  display: grid;
  place-items: center;
  padding: 0 12px;
  color: var(--text-muted);
}
.arch__arrow svg {
  width: 24px;
  height: 24px;
}

/* Roadmap timeline */
.timeline {
  position: relative;
  padding-left: 32px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--border-strong);
}
.timeline__item {
  position: relative;
  padding-bottom: 32px;
}
.timeline__item::before {
  content: '';
  position: absolute;
  left: -32px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--primary);
}
.timeline__item--done::before {
  background: var(--primary);
}
.timeline__item--planned::before {
  border-color: var(--text-muted);
  border-style: dashed;
}
.timeline__version {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  margin-bottom: 6px;
}
.timeline__item h4 {
  font-size: var(--text-lg);
  font-weight: 650;
  margin-bottom: 6px;
}
.timeline__item p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Screenshot gallery */
.gallery {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  padding: 8px 4px 24px;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}
.gallery__item {
  flex: 0 0 auto;
  width: 240px;
  scroll-snap-align: start;
}
.gallery__item img {
  width: 100%;
  aspect-ratio: 9 / 19;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-md);
  transition: transform var(--dur) var(--ease);
}
.gallery__item:hover img {
  transform: translateY(-4px);
}
.gallery__item figcaption {
  margin-top: 10px;
  text-align: center;
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* Stats strip */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.stat-card {
  padding: 28px 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
}
.stat-card b {
  display: block;
  font-size: var(--text-4xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--primary-text);
}
.stat-card span {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* Contributors */
.contributors {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.contributor {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px 8px 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: border-color var(--dur-fast) var(--ease);
}
.contributor:hover {
  border-color: var(--border-strong);
}
.contributor__avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: var(--text-xs);
  color: #fff;
}

/* Landing CTA */
.cta-band {
  position: relative;
  margin: 72px 0;
  padding: 64px 48px;
  text-align: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.cta-band::before {
  content: none;
}
.cta-band h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
  position: relative;
}
.cta-band p {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 52ch;
  margin: 0 auto 32px;
  position: relative;
}
.cta-band__actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* Landing footer */
.landing-footer {
  padding: 40px 0 64px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: var(--text-sm);
}
.landing-footer__links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.landing-footer a {
  color: var(--text-muted);
  transition: color var(--dur-fast) var(--ease);
}
.landing-footer a:hover {
  color: var(--primary-text);
}

/* --------------------------------------------------------------------------
   25. Scroll reveal
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   26. Mobile bottom nav
   -------------------------------------------------------------------------- */
.mobile-nav {
  display: none;
}

/* Sidebar overlay backdrop (mobile) */
.sidebar-backdrop {
  display: none;
}

/* --------------------------------------------------------------------------
   27. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1200px) {
  .docs-layout {
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  }
  .toc {
    display: none;
  }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 48px;
    padding: 40px 0 56px;
  }
  .mockup {
    transform: none;
    max-width: 520px;
    margin: 0 auto;
  }
  .mockup:hover {
    transform: none;
  }
  .bento {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 180px;
  }
  .bento__card--wide,
  .bento__card--half { grid-column: span 2; }
  .bento__card--reg { grid-column: span 1; }
  .stats-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .arch__arrow {
    transform: rotate(90deg);
    padding: 8px 0;
    width: 100%;
  }
}

@media (max-width: 860px) {
  .docs-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    width: 300px;
    height: auto;
    z-index: var(--z-sidebar);
    background: var(--bg-subtle);
    border-right: 1px solid var(--border);
    transform: translateX(-100%);
    transition: transform var(--dur) var(--ease);
    box-shadow: var(--shadow-lg);
  }
  body.sidebar-open .sidebar {
    transform: translateX(0);
  }
  .sidebar-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    top: var(--header-height);
    z-index: calc(var(--z-sidebar) - 1);
    background: rgba(4, 7, 14, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);
  }
  body.sidebar-open .sidebar-backdrop {
    opacity: 1;
    visibility: visible;
  }
  .content {
    padding: 28px 22px 80px;
  }
  .hamburger {
    display: grid;
  }
  .header-search {
    max-width: none;
  }
  .header-link span,
  .version-select {
    display: none;
  }
  .pager {
    grid-template-columns: 1fr;
  }
  .pager__item.empty {
    display: none;
  }

  /* Mobile bottom nav */
  .mobile-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    background: var(--bg-subtle);
    border-top: 1px solid var(--border);
    padding: 8px 8px calc(8px + env(safe-area-inset-bottom));
  }
  .mobile-nav button,
  .mobile-nav a {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 6px;
    font-size: 0.66rem;
    font-weight: 600;
    color: var(--text-muted);
    border-radius: var(--radius-md);
  }
  .mobile-nav button.active,
  .mobile-nav a.active {
    color: var(--primary-text);
  }
  .mobile-nav svg {
    width: 20px;
    height: 20px;
  }
  body {
    padding-bottom: 64px;
  }
  .to-top {
    bottom: 84px;
  }
}

@media (max-width: 560px) {
  .bento {
    grid-template-columns: 1fr;
    grid-auto-rows: auto;
  }
  .bento__card {
    grid-column: span 1 !important;
    grid-row: span 1 !important;
    min-height: 160px;
  }
  .stats-strip {
    grid-template-columns: 1fr 1fr;
  }
  .hero__stats {
    gap: 24px;
  }
  .logo__name small,
  .logo__divider {
    display: none;
  }
  .search-trigger__label,
  .search-trigger kbd {
    display: none;
  }
  .cta-band {
    padding: 44px 24px;
  }
}

/* --------------------------------------------------------------------------
   28. Reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
  .mockup {
    transform: none;
  }
}

/* --------------------------------------------------------------------------
   29. Print
   -------------------------------------------------------------------------- */
@media print {
  .site-header,
  .sidebar,
  .toc,
  .to-top,
  .pager,
  .feedback,
  .page-meta__actions,
  .bg-ambient,
  .reading-progress,
  .mobile-nav,
  .breadcrumbs {
    display: none !important;
  }
  .docs-layout {
    display: block;
  }
  .content {
    padding: 0;
  }
  body {
    background: #fff;
    color: #000;
  }
  .prose {
    max-width: 100%;
  }
}