:root {
  --topbar-height: 64px;
  --sidebar-width: 300px;
  --border: rgba(213, 217, 226, 0.55);
  --border-strong: #e5e7eb;
  --text: #0a0a0a;
  --text-muted: #6b7280;
  --text-faint: #9ca3af;
  --panel: #f6f6f7;
  --panel-row: #f0f0f1;
  --accent-green: #22c55e;
  --accent-orange: #e8843c;
  --font-sans: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Site accent (blue) — the one deliberate divergence from the neutral
     scheme. Interactive emphasis (links, active nav/tab/TOC, buttons, search
     highlight, focus rings) all reads from this pair: change these two
     values (here and in the dark block) to re-accent the whole site. */
  --accent: #2563eb;
  --accent-contrast: #ffffff;

  --bg: #ffffff;
  --surface: #ffffff;
  --surface-2: #fafafa;
  --hover: #f3f4f6;
  --hover-soft: #fafbff;
  --topbar-bg: rgba(255, 255, 255, 0.85);
  --invert: #0a0a0a;
  --invert-text: #ffffff;
  --accent-soft: color-mix(in srgb, var(--accent) 9%, transparent);
  --callout-bg: color-mix(in srgb, var(--invert) 3%, transparent);

  /* sidebar nav */
  --nav-text: #7d8187;
  --nav-label: #0a0a0a;
  --nav-active: var(--accent);
  --nav-active-bg: color-mix(in srgb, var(--accent) 7%, transparent);

  /* code block chrome */
  --cb-border: var(--border);

  /* mermaid palette */
  --mmd-node-bg: #f3f4f6;
  --mmd-node-border: #d1d5db;
  --mmd-text: #4b5563;
  --mmd-line: #9ca3af;
  --mmd-group-bg: #fafafa;
  --mmd-group-border: #e5e7eb;
  --mmd-alt-bg: #ffffff;
  --mmd-accent: #2563eb;
  --mmd-accent-contrast: #ffffff;
}

[data-theme="dark"] {
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #ededed;
  --text-muted: #9ca3af;
  --text-faint: #6b7280;
  --accent-green: #4ade80;

  --accent: #60a5fa;
  --accent-contrast: #ffffff;

  --bg: #070707;
  --surface: #0c0c0d;
  --surface-2: hsl(0 0% 10%);
  --hover: #141416;
  --hover-soft: #0d0d0f;
  --topbar-bg: rgba(10, 10, 11, 0.85);
  --invert: #ededed;
  --invert-text: #0a0a0b;
  --accent-soft: color-mix(in srgb, var(--accent) 14%, transparent);
  --callout-bg: color-mix(in srgb, var(--invert) 7%, transparent);

  --nav-text: #7d8187;
  --nav-label: #ffffff;
  --nav-active: var(--accent);
  --nav-active-bg: color-mix(in srgb, var(--accent) 12%, transparent);

  --cb-border: rgba(255, 255, 255, 0.08);

  --table-bg: #121212;

  --mmd-node-bg: #1a1a1c;
  --mmd-node-border: #34343a;
  --mmd-text: #9ca3af;
  --mmd-line: #6b7280;
  --mmd-group-bg: #121214;
  --mmd-group-border: #2a2a2e;
  --mmd-alt-bg: #0c0c0d;
  --mmd-accent: #60a5fa;
  --mmd-accent-contrast: #0a0a0b;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background .2s, color .2s;
}
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: var(--accent-contrast); }
::-moz-selection { background: var(--accent); color: var(--accent-contrast); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ===== Skip link ===== */
/* transform, not display:none, so it stays in the focus order */
.skip-link {
  position: fixed; top: 8px; left: 8px; z-index: 200;
  padding: 10px 16px;
  background: var(--accent); color: var(--accent-contrast);
  font: 500 13px/1 var(--font-sans);
  transform: translateY(-200%);
  transition: transform .18s ease;
}
.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid var(--accent-contrast); outline-offset: -4px;
}
#main-content:focus { outline: none; }

/* ===== Topbar ===== */
.topbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--topbar-height);
  display: flex; align-items: center; gap: 16px;
  padding: 0 24px;
  background: var(--bg);
  z-index: 50;
  transition: background-color .3s ease, box-shadow .3s ease;
}
/* blur only while scrolled: at rest the bar is opaque */
.topbar.scrolled {
  background: var(--topbar-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border), 0 12px 24px -18px rgba(0, 0, 0, 0.35);
}
.brand { display: flex; align-items: center; color: var(--text); }
.brand img { height: 24px; width: auto; display: block; }
.brand .logo-dark { display: none; }
[data-theme="dark"] .brand .logo-light { display: none; }
[data-theme="dark"] .brand .logo-dark { display: block; }
.topbar-center {
  position: absolute; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 4px;
}
.tab-link {
  font-weight: 500; font-size: 15px; color: var(--text-muted);
  padding: 7px 12px; cursor: pointer; white-space: nowrap;
  transition: color .15s ease, background-color .15s ease;
}
.tab-link:hover { color: var(--text); background: var(--hover); }
.tab-link.active { color: var(--accent); font-weight: 600; }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.icon-btn {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); cursor: pointer;
  border: none; background: none;
  transition: color .15s ease, background-color .15s ease;
}
.icon-btn:hover { background: var(--hover); }
.icon-btn svg { width: 18px; height: 18px; }
/* Theme toggle: moon while light, sun while dark */
#themeToggle { position: relative; }
#themeToggle svg {
  position: absolute; inset: 0; margin: auto;
  transition: opacity .2s ease, transform .45s cubic-bezier(.16, 1, .3, 1);
}
#themeToggle .ic-moon { opacity: 1; transform: rotate(0) scale(1); }
#themeToggle .ic-sun { opacity: 0; transform: rotate(-90deg) scale(.5); }
[data-theme="dark"] #themeToggle .ic-moon { opacity: 0; transform: rotate(90deg) scale(.5); }
[data-theme="dark"] #themeToggle .ic-sun { opacity: 1; transform: rotate(0) scale(1); }
@media (prefers-reduced-motion: reduce) {
  #themeToggle svg { transition: opacity .2s ease; transform: none !important; }
}
.search {
  display: flex; align-items: center; gap: 10px;
  width: 208px; height: 36px; padding: 0 14px;
  border: 1px solid var(--border-strong);
  color: var(--text-faint); font-size: 14px; cursor: pointer;
  /* it is a <button>: drop the UA background, inherit the page font */
  background: none; font-family: var(--font-sans); text-align: left;
  transition: border-color .2s ease;
}
.search:hover { border-color: var(--text-faint); }
.search .kbd { margin-left: auto; font-size: 12px; color: var(--text-faint); }

/* GitHub split button + repositories dropdown */
.repo-wrap { position: relative; }
.repo-btn {
  display: flex; align-items: stretch;
  background: var(--accent); color: var(--accent-contrast);
  font-size: 14px; font-weight: 500;
  overflow: hidden; cursor: pointer;
}
.repo-btn .label {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 14px; color: inherit; text-decoration: none;
}
.repo-btn .label svg { width: 16px; height: 16px; }
.repo-btn .label:hover { background: color-mix(in srgb, var(--accent-contrast) 10%, transparent); }
.repo-btn .split {
  display: flex; align-items: center; padding: 0 8px;
  border: none; border-left: 1px solid color-mix(in srgb, var(--accent-contrast) 25%, transparent);
  background: none; color: inherit; cursor: pointer; font-size: 14px;
}
.repo-btn .split:hover { background: color-mix(in srgb, var(--accent-contrast) 10%, transparent); }
.repo-btn .split svg { transition: transform .18s ease; }
.repo-wrap.open .repo-btn .split svg { transform: rotate(180deg); }
.repo-menu {
  position: absolute; top: calc(100% + 8px); right: 0; min-width: 220px;
  background: var(--surface); border: 1px solid var(--border);
  padding: 6px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.14);
  display: none; flex-direction: column; gap: 2px; z-index: 60;
}
.repo-wrap.open .repo-menu { display: flex; }
.repo-menu a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px;
  font-size: 14px; color: var(--text); text-decoration: none;
}
.repo-menu a:hover { background: var(--hover); }
.repo-menu a svg { width: 16px; height: 16px; color: var(--text-muted); flex-shrink: 0; }
.repo-menu .menu-sep { height: 1px; background: var(--border); margin: 4px 6px; }

/* ===== Layout ===== */
.layout { display: flex; padding-top: var(--topbar-height); }

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-width); flex-shrink: 0;
  height: calc(100vh - var(--topbar-height));
  position: sticky; top: var(--topbar-height);
  overflow-y: auto; padding: 8px 20px 60px 24px;
}
.sidebar { scrollbar-width: thin; scrollbar-color: transparent transparent; }
.sidebar:hover { scrollbar-color: var(--border) transparent; }
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: transparent; }
.sidebar:hover::-webkit-scrollbar-thumb { background: var(--border); }
.nav-group { margin-top: 22px; }
.nav-group:first-child { margin-top: 8px; }
.nav-group-label {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 500; color: var(--nav-label);
  padding: 6px 0; margin-bottom: 2px;
}
.nav-link {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--nav-text); font-weight: 500;
  padding: 6px 10px; cursor: pointer; line-height: 1.43;
  transition: color .15s ease, background-color .15s ease;
}
.nav-link:hover { background: var(--hover); color: var(--text); }
.nav-link.active { color: var(--nav-active); font-weight: 500; background: var(--nav-active-bg); }
.nav-subgroup { margin: 2px 0 2px; }
.nav-subgroup-toggle {
  width: 100%;
  display: flex; align-items: center; gap: 6px;
  padding: 6px 10px;
  background: none; border: none; cursor: pointer;
  font: 500 13px/1.43 var(--font-sans); color: var(--nav-label);
  text-align: left;
}
.nav-subgroup-toggle:hover { background: var(--hover); }
.nav-subgroup-toggle svg { margin-left: auto; flex-shrink: 0; color: var(--text-faint); transition: transform .18s ease; }
.nav-subgroup.collapsed .nav-subgroup-toggle svg { transform: rotate(-90deg); }
.nav-subgroup.collapsed .nav-children { display: none; }
.nav-subgroup-label { font-size: 13px; font-weight: 500; color: var(--nav-label); }
.nav-tag {
  font-size: 10px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
  color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  padding: 1px 5px; flex-shrink: 0;
}
.nav-children { border-left: 1px solid var(--border); margin-left: 14px; padding-left: 4px; }
.nav-method {
  margin-left: auto; font-size: 10px; font-weight: 700; letter-spacing: .03em;
  color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  padding: 1px 5px;
}

/* ===== Mobile tab switcher (top of sidebar drawer) ===== */
.mob-tab-switcher {
  display: none; /* shown only on mobile via media query */
  position: relative;
  margin: 4px 0 12px;
}
.mob-tab-btn {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 9px 12px;
  background: var(--surface-2); border: 1px solid var(--border-strong);
  cursor: pointer;
  font: 500 13px/1 var(--font-sans); color: var(--text);
  transition: background .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.mob-tab-btn:hover { background: var(--hover); }
.mob-tab-btn.open {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.mob-tab-btn svg { flex-shrink: 0; color: var(--text-muted); transition: transform .25s cubic-bezier(.16,1,.3,1); }
.mob-tab-btn.open svg { transform: rotate(180deg); }
.mob-tab-menu {
  position: absolute; top: calc(100% + 6px); left: 0; right: 0;
  background: var(--surface);
  border: 1px solid var(--border-strong);

  box-shadow: 0 8px 24px rgba(0,0,0,.12);
  overflow: hidden;
  z-index: 80;
  /* closed state — animatable without display:none */
  opacity: 0;
  transform: translateY(-6px) scale(.98);
  pointer-events: none;
  transition: opacity .2s cubic-bezier(.16,1,.3,1),
              transform .2s cubic-bezier(.16,1,.3,1);
}
.mob-tab-menu.mob-tab-menu-open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.mob-tab-item {
  display: block;
  padding: 10px 14px;
  font: 500 13px/1 var(--font-sans); color: var(--text-muted);
  transition: background .15s ease, color .15s ease, padding-left .15s ease;
}
.mob-tab-item:hover { background: var(--hover); color: var(--text); padding-left: 18px; }
.mob-tab-item-active {
  color: var(--accent); font-weight: 600; background: var(--accent-soft);
  border-left: 2px solid var(--accent);
  padding-left: 12px;
}

/* ===== Main / content ===== */
.main-area { flex: 1; min-width: 0; display: flex; }
.content {
  flex: 1; min-width: 0;
  width: 100%; max-width: 42rem; margin-inline: auto;
  padding: 40px 16px 120px;
}
@media (min-width: 1024px) { .content { padding-inline: 24px; } }

/* ===== "On this page" TOC =====
   Narrow: collapsible panel above the article (order:-1; the DOM has it last).
   Wide: sticky right column, always expanded. */
.toc {
  order: -1;
  margin: 28px auto 4px; padding: 0;
  width: calc(100% - 48px); max-width: calc(42rem - 48px);
  border: 1px solid var(--border-strong); background: var(--surface);
}
.main-area { flex-direction: column; }
.toc-title {
  font-size: 12px; font-weight: 600; color: var(--text);
  padding: 11px 16px; cursor: pointer;
  display: flex; align-items: center; gap: 8px;
  list-style: none;
}
.toc-title::-webkit-details-marker { display: none; }
.toc-title::before {
  content: "\203A"; color: var(--text-faint);
  transition: transform .18s ease; display: inline-block;
}
.toc[open] > .toc-title::before { transform: rotate(90deg); color: var(--accent); }
.toc .toc-list { padding: 0 16px 12px; }

@media (min-width: 1280px) {
  .main-area { flex-direction: row; }
  .toc {
    order: 0;
    width: 220px; max-width: none; flex-shrink: 0;
    position: sticky; top: var(--topbar-height); align-self: flex-start;
    max-height: calc(100vh - var(--topbar-height));
    overflow-y: auto; padding: 48px 24px 48px 0; margin: 0;
    border: none; background: none;
    scrollbar-width: none; -ms-overflow-style: none;
  }
  .toc::-webkit-scrollbar { width: 0; height: 0; }
  .toc-title { padding: 0; margin-bottom: 10px; cursor: default; }
  .toc-title::before { display: none; }
  .toc .toc-list { padding: 0; }
}
.toc-link {
  display: block; padding: 4px 0;
  font-size: 12.5px; line-height: 1.45;
  color: var(--nav-text); text-decoration: none;
  transition: color .18s ease;
}
.toc-link.depth-3 { padding-left: 14px; }
.toc-link:hover { color: var(--text); }
.toc-link.active { color: var(--accent); }

.page-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; margin-bottom: 14px; flex-wrap: wrap;
  position: relative; z-index: 5;
}
.page-head .breadcrumb { margin-bottom: 0; }
.breadcrumb { font-size: 13px; color: var(--text-faint); margin-bottom: 14px; }
.breadcrumb span { color: var(--text-muted); }
.breadcrumb .crumb-link { color: var(--text-muted); text-decoration: none; transition: color .15s ease; }
.breadcrumb .crumb-link:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }

/* page actions: "Copy page" split button + a menu of the other page sources */
.page-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.pa-wrap { position: relative; }
.pa-split { display: flex; align-items: stretch; }
.pa-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--border-strong);
  background: var(--surface); color: var(--text-muted);
  font: 500 12px/1 var(--font-sans); cursor: pointer; text-decoration: none;
  transition: color .15s ease, border-color .15s ease, background .15s ease;
}
.pa-btn:hover { color: var(--text); border-color: var(--text-faint); background: var(--hover-soft); }
.pa-btn svg { width: 13px; height: 13px; }
.pa-btn.copied { color: var(--accent-green); border-color: color-mix(in srgb, var(--accent-green) 45%, transparent); }
.pa-btn.copy-failed { color: var(--accent-orange); border-color: color-mix(in srgb, var(--accent-orange) 45%, transparent); }
.pa-toggle { padding: 5px 6px; margin-left: -1px; }
.pa-toggle svg { width: 12px; height: 12px; transition: transform .18s ease; }
.pa-wrap.open .pa-toggle svg { transform: rotate(180deg); }
.pa-wrap.open .pa-toggle { color: var(--text); border-color: var(--text-faint); background: var(--hover-soft); }

.pa-menu {
  position: absolute; top: calc(100% + 6px); right: 0; min-width: 244px;
  background: var(--surface); border: 1px solid var(--border);
  padding: 6px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.14);
  display: none; flex-direction: column; gap: 2px; z-index: 60;
}
.pa-wrap.open .pa-menu { display: flex; }
.pa-item {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 8px 10px; border: none; background: none;
  font: 500 13px/1.2 var(--font-sans); color: var(--text);
  text-align: left; text-decoration: none; cursor: pointer;
}
.pa-item:hover { background: var(--hover); }
.pa-item > span { flex: 1 1 auto; }
.pa-item svg { width: 15px; height: 15px; color: var(--text-muted); flex-shrink: 0; }
.pa-item .pa-hint { font-size: 11px; font-style: normal; color: var(--text-faint); }
.pa-item .pa-ext {
  width: 13px; height: 13px; color: var(--text-faint);
  transition: color .15s ease, transform .15s ease;
}
.pa-item:hover .pa-ext { color: var(--text-muted); transform: translate(1px, -1px); }
.pa-item.copied, .pa-item.copied svg { color: var(--accent-green); }
.pa-menu .menu-sep { height: 1px; background: var(--border); margin: 4px 6px; }
.content a.pa-item { color: var(--text); text-decoration: none; }
.content a.pa-item:hover { color: var(--text); }
.page-title { font-size: 38px; font-weight: 600; letter-spacing: -.8px; line-height: 1.1; }
.page-lead { margin-top: 14px; color: var(--text-muted); font-size: 17px; line-height: 1.55; }

/* ===== HTTP method badges ===== */
.api-endpoint { display: flex; align-items: center; gap: 10px; margin: 14px 0 4px; flex-wrap: wrap; }
.http-method {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 11.5px; font-weight: 700;
  letter-spacing: .06em; padding: 3px 9px;
  text-transform: uppercase; flex-shrink: 0;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}
.api-url {
  font-family: var(--font-mono); font-size: 13.5px; color: var(--text-muted);
  background: none; border: none; padding: 0; word-break: break-all;
}

/* ===== Prose ===== */
.content h2 { font-size: 24px; font-weight: 600; letter-spacing: -.3px; margin: 44px 0 12px; }
.content h3 { font-size: 19px; font-weight: 600; margin: 34px 0 10px; }
.content h4, .content h5 { font-size: 16px; font-weight: 600; margin: 26px 0 8px; }
.content h6 { font-size: 14px; font-weight: 600; margin: 22px 0 6px; }
.content p { font-size: 13px; line-height: 1.7; color: var(--text-muted); margin: 14px 0; }
.content ul, .content ol { margin: 14px 0 14px 0; padding-left: 22px; }
.content li { font-size: 13px; line-height: 1.7; color: var(--text-muted); margin: 6px 0; }
.content li::marker { color: var(--text-faint); }
.content a { color: var(--accent); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--accent) 35%, transparent); text-underline-offset: 2px; }
.content a:hover { text-decoration-color: var(--accent); }

/* ===== Heading permalinks =====
   The "#" is CSS-generated so the anchor holds no text; see mdx.mjs. */
.content a.h-anchor {
  margin-left: .35em;
  color: var(--text-faint); text-decoration: none;
  opacity: 0; transition: opacity .15s ease, color .15s ease;
}
.content a.h-anchor::before { content: "#"; }
.content a.h-anchor:hover { color: var(--accent); text-decoration: none; }
.content h2:hover .h-anchor,
.content h3:hover .h-anchor,
.content h4:hover .h-anchor,
.content .h-anchor:focus-visible { opacity: 1; }
@media (hover: none) { .content a.h-anchor { opacity: .45; } }
.content strong { color: var(--text); font-weight: 600; }
.content hr { border: none; border-top: 1px solid var(--border); margin: 36px 0; }
.content blockquote {
  margin: 18px 0; padding: 4px 16px; border-left: 3px solid var(--border-strong);
  color: var(--text-muted); font-size: 13px;
}
.content :not(pre) > code {
  font-family: var(--font-mono); font-size: 0.85em;
  background: none; color: var(--accent);
  padding: 0; border: none;
}

/* ===== Markdown tables ===== */
.content table {
  width: 100%; border-collapse: collapse; margin: 24px 0;
  font-size: 14px; border: 1px solid var(--border-strong);
  overflow: hidden; display: table;
}
.content thead th {
  text-align: left; font-weight: 600; font-size: 12.5px;
  color: var(--text-muted); padding: 11px 16px;
  background: var(--surface-2); border-bottom: 1px solid var(--border-strong);
}
.content tbody td { padding: 11px 16px; border-bottom: 1px solid var(--border); color: var(--text-muted); vertical-align: top; }
.content tbody tr:last-child td { border-bottom: none; }
.content tbody tr:hover { background: var(--hover-soft); }
[data-theme="dark"] .content table { background: var(--table-bg); border-color: var(--border); }
[data-theme="dark"] .content thead th { background: var(--table-bg); border-bottom-color: var(--border); }
[data-theme="dark"] .content tbody tr:hover { background: #1a1a1a; }
@media (max-width: 900px) {
  .content table { display: block; overflow-x: auto; }
}

/* ===== Filterable-table toolbar (large tables) ===== */
.table-wrap { margin: 24px 0; }
.table-wrap > table { margin: 0; border-top-left-radius: 0; border-top-right-radius: 0; }
.table-toolbar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--border-strong); border-bottom: none;
  border-top-left-radius: 0; border-top-right-radius: 0;
  background: linear-gradient(var(--accent-soft), var(--accent-soft)) var(--bg);
}
.filter-input {
  flex: 1; display: flex; align-items: center; gap: 8px;
  height: 34px; padding: 0 12px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
}
.filter-input input {
  border: none; outline: none; flex: 1;
  font-family: var(--font-sans); font-size: 13.5px;
  color: var(--text); background: transparent;
}
.filter-input:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.filter-input svg { color: var(--text-faint); width: 16px; height: 16px; flex-shrink: 0; }
.row-count { font-size: 13px; color: var(--text-faint); white-space: nowrap; }
.no-results {
  padding: 24px; text-align: center; color: var(--text-faint); font-size: 14px;
  border: 1px solid var(--border-strong); border-top: none;
  border-bottom-left-radius: 0; border-bottom-right-radius: 0;
}
[data-theme="dark"] .table-toolbar { background: var(--table-bg); border-color: var(--border); }
[data-theme="dark"] .filter-input { border-color: rgba(255, 255, 255, 0.1); background: var(--table-bg); }
[data-theme="dark"] .no-results { background: var(--table-bg); border-color: var(--border); }

/* ===== Code blocks (Shiki dual theme; header with language label + copy) ===== */
.code-block {
  position: relative; margin: 20px 0;
  border: 1px solid var(--cb-border); overflow: hidden;
}
.code-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 8px 5px 14px;
  background: var(--callout-bg); border-bottom: 1px solid var(--cb-border);
}
.code-lang {
  font-family: var(--font-mono); font-size: 11.5px; font-weight: 500;
  letter-spacing: .03em; color: var(--text-muted);
}
.shiki {
  margin: 0; padding: 14px 16px; overflow-x: auto;
  font-family: var(--font-mono); font-size: 13px; line-height: 24px;
  /* !important overrides the background Shiki inlines on the <pre> */
  background-color: var(--callout-bg) !important;
}
.shiki code { font-family: inherit; background: none; border: none; padding: 0; white-space: pre; }
/* slim pill scrollbars on overflow scrollers (code, tables) */
.shiki, .table-wrap, .content table { scrollbar-width: thin; scrollbar-color: rgba(0, 0, 0, 0.22) transparent; }
[data-theme="dark"] .shiki, [data-theme="dark"] .table-wrap, [data-theme="dark"] .content table { scrollbar-color: rgba(255, 255, 255, 0.18) transparent; }
.shiki::-webkit-scrollbar, .table-wrap::-webkit-scrollbar, .content table::-webkit-scrollbar { width: 10px; height: 10px; }
.shiki::-webkit-scrollbar-track, .table-wrap::-webkit-scrollbar-track, .content table::-webkit-scrollbar-track { background: transparent; }
.shiki::-webkit-scrollbar-thumb, .table-wrap::-webkit-scrollbar-thumb, .content table::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.22);
  border: 3px solid transparent; background-clip: padding-box;

}
[data-theme="dark"] .shiki::-webkit-scrollbar-thumb,
[data-theme="dark"] .table-wrap::-webkit-scrollbar-thumb,
[data-theme="dark"] .content table::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.18); }
.shiki-plain { background: var(--callout-bg); color: #24292e; }
/* dark theme: flip Shiki's dark token vars in */
[data-theme="dark"] .shiki,
[data-theme="dark"] .shiki span { color: var(--shiki-dark) !important; }
[data-theme="dark"] .shiki-plain { color: #e1e4e8; }

.code-copy {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px;
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; transition: background .12s, color .12s;
}
.code-copy:hover { background: var(--hover); color: var(--text); }
.code-copy svg { width: 14px; height: 14px; }
.code-copy.copied { color: var(--accent-green); }
.code-copy.copy-failed { color: var(--accent-orange); }

/* ===== CodeGroup (pill tabs above a standalone block) ===== */
.code-group { position: relative; margin: 20px 0; }
.cg-tabs {
  display: flex; align-items: center; gap: 8px;
  padding: 0 2px 10px; background: none; overflow-x: auto;
}
.cg-tab {
  font-family: var(--font-mono); font-size: 12px; font-weight: 500;
  color: var(--nav-text); background: none; border: none; cursor: pointer;
  padding: 4px 10px; white-space: nowrap;
  transition: color .12s, background .12s;
}
.cg-tab:hover { color: var(--text); }
.cg-tab.active { color: var(--accent); background: var(--accent-soft); }
.code-group .cg-pane { display: none; }
.code-group .cg-pane.active { display: block; }
.code-group .code-block { margin: 0; }

/* ===== Mermaid diagrams (client-rendered) =====
   Panel contrast guarantee: the figure region always separates from the page
   in both themes — light: white surface + gray border under mermaid's
   neutral theme; dark: #0c0c0d surface + white-alpha border under mermaid's
   dark theme (whose node fills are lighter than the panel). Corners square. */
pre.mermaid {
  margin: 20px 0; padding: 16px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  overflow-x: auto;
  font-family: var(--font-mono); font-size: 12.5px; line-height: 1.5;
  color: var(--text-muted);
}
/* Before render, hold a stable panel rather than flashing the diagram source:
   font-size 0 collapses the raw text without removing it. A block that fails
   to render is marked data-failed and shows its source as the fallback. */
pre.mermaid:not([data-processed]):not([data-failed]) {
  display: flex; align-items: center; justify-content: center;
  min-height: 200px; font-size: 0;
}
pre.mermaid:not([data-processed]):not([data-failed])::after {
  content: "";
  width: 18px; height: 18px;
  border: 2px solid var(--border-strong); border-top-color: var(--text-faint);
  border-radius: 50%;
  animation: mmd-spin .7s linear infinite;
}
@keyframes mmd-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  pre.mermaid:not([data-processed]):not([data-failed])::after { animation: none; }
}

pre.mermaid[data-processed] {
  display: block; position: relative; padding: 0;
  white-space: normal; font-family: var(--font-sans);
  overflow: hidden; /* the viewport pans/zooms inside */
  min-height: 220px;
}

/* Figure breakout */
@media (min-width: 1280px) {
  pre.mermaid {
    --mmd-panel: clamp(672px, calc(100vw - 300px - 196px - 176px), 1040px);
    width: var(--mmd-panel);
    margin-left: calc((100% - var(--mmd-panel)) / 2);
    margin-right: calc((100% - var(--mmd-panel)) / 2);
  }
}
pre.mermaid svg { max-width: 100%; height: auto; }

/* Diagram-only overrides (.mmd-canvas holds the rendered SVG; the control bar
   has its own icon SVGs). !important is needed: mermaid scopes its generated
   rules by the SVG's id, which outranks any selector here. */
.mmd-canvas svg rect,
.mmd-canvas svg .actor,
.mmd-canvas svg .labelBox,
.mmd-canvas svg .note { rx: 0 !important; ry: 0 !important; }
.mmd-canvas svg .er.entityBox,
.mmd-canvas svg .er.attributeBoxOdd,
.mmd-canvas svg .er.attributeBoxEven { rx: 0 !important; ry: 0 !important; }

/* Mermaid renders labels as HTML in <foreignObject>, which sits inside
   .content, so the prose rules (notably .content p's muted colour) capture
   them. Reassert the diagram colour for every HTML label. */
.mmd-canvas svg foreignObject p,
.mmd-canvas svg foreignObject span,
.mmd-canvas svg foreignObject div,
.mmd-canvas svg .nodeLabel,
.mmd-canvas svg .edgeLabel {
  color: var(--mmd-text) !important;
  font-family: var(--font-mono) !important;
  font-size: 12.5px !important;
  letter-spacing: -0.01em;
}

/* mermaid sizes sequence text independently of themeVariables.fontSize */
.mmd-canvas svg text,
.mmd-canvas svg text.actor,
.mmd-canvas svg .actor-box,
.mmd-canvas svg .messageText,
.mmd-canvas svg .loopText,
.mmd-canvas svg .noteText,
.mmd-canvas svg .er.entityLabel,
.mmd-canvas svg .er.relationshipLabel {
  font-family: var(--font-mono) !important;
  font-size: 12.5px !important;
  fill: var(--mmd-text) !important;
}

/* edge labels sit on the panel, not on an opaque slab of their own */
.mmd-canvas svg .edgeLabel,
.mmd-canvas svg .edgeLabel p,
.mmd-canvas svg .edgeLabel .labelBkg { background: transparent !important; }
.mmd-canvas svg .edgeLabel rect { fill: var(--surface) !important; }

/* diagram control bar: zoom out / % / zoom in / reset / fullscreen */
.mmd-bar {
  position: absolute; top: 8px; right: 8px; z-index: 5;
  display: flex; align-items: center; gap: 2px;
  padding: 3px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(4px);
  opacity: 0; transition: opacity .15s ease;
}
pre.mermaid:hover .mmd-bar, .mmd-bar:focus-within,
pre.mermaid:fullscreen .mmd-bar, pre.mermaid.mmd-fs .mmd-bar { opacity: 1; }

pre.mermaid[data-dense] .mmd-bar { opacity: 1; }
pre.mermaid[data-dense] .mmd-viewport { padding-top: 46px; }
.mmd-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px;
  background: none; border: none;
  color: var(--text-muted); cursor: pointer;
  transition: background .12s, color .12s;
}
.mmd-btn:hover { background: var(--hover); color: var(--text); }
.mmd-btn svg { width: 14px; height: 14px; }
.mmd-zoom {
  min-width: 38px; text-align: center;
  font: 500 11px/1 var(--font-mono); color: var(--text-muted);
}
.mmd-viewport {
  display: flex; justify-content: center; align-items: center;
  padding: 16px; overflow: hidden;
  touch-action: pan-y; /* raised to none when there is room to pan — build.mjs apply() */
}
.mmd-canvas { width: 100%; transform-origin: center center; }
.mmd-canvas svg { display: block; margin: 0 auto; }

/* fullscreen: native, plus a fixed-overlay fallback (.mmd-fs) */
pre.mermaid:fullscreen, pre.mermaid.mmd-fs {
  display: flex; flex-direction: column;
  background: var(--bg); border: none; margin: 0;
}
pre.mermaid.mmd-fs { position: fixed; inset: 0; z-index: 200; }
pre.mermaid:fullscreen .mmd-viewport, pre.mermaid.mmd-fs .mmd-viewport { flex: 1; }
body.mmd-fs-open { overflow: hidden; }

/* ===== Callouts ===== */
.mdx-callout {
  display: flex; gap: 14px; margin: 22px 0;
  padding: 18px 20px;
  background: var(--callout-bg);
  font-size: 14px; color: var(--text); line-height: 1.6;
}
.mdx-callout .callout-ic { flex-shrink: 0; margin-top: 2px; color: var(--text-faint); }
.mdx-callout .callout-ic svg { width: 18px; height: 18px; }
/* min-width:0 lets wide children (code blocks, tables) scroll instead of overflowing */
.callout-body { flex: 1; min-width: 0; }
/* nested code blocks sit flush on the callout instead of double-tinting it */
.callout-body .code-head,
.callout-body .shiki,
.callout-body .shiki-plain { background-color: transparent !important; }
.callout-body > :first-child { margin-top: 0; }
.callout-body > :last-child { margin-bottom: 0; }
.callout-body p { color: inherit; margin: 8px 0; }
.mdx-callout strong { color: var(--text); }
.mdx-callout code { background: var(--bg); }
/* all variants share the neutral base, including the icon tint */

/* ===== Cards ===== */
.card-group { display: grid; grid-template-columns: repeat(var(--cols, 2), 1fr); gap: 14px; margin: 22px 0; }
.mdx-card {
  display: block; padding: 18px; border: 1px solid var(--border-strong);
  background: var(--surface);
  transition: border-color .15s, background .15s, transform .3s cubic-bezier(.16, 1, .3, 1), box-shadow .3s ease;
}
a.mdx-card:hover {
  border-color: var(--accent); background: var(--hover-soft);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -16px rgba(0, 0, 0, 0.25);
}
.content a.mdx-card, .content a.mdx-card:hover { text-decoration: none; }
.card-horizontal { display: flex; align-items: flex-start; gap: 14px; }
.card-horizontal .card-icon { margin-bottom: 0; }
.card-icon { display: inline-flex; color: var(--accent); margin-bottom: 10px; }
.card-icon svg { width: 22px; height: 22px; }
.card-title { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.card-body { font-size: 14px; }
.card-body p { margin: 4px 0; font-size: 14px; }

/* ===== Checklist ===== */
.content .checklist {
  list-style: none; margin: 20px 0; padding: 0;
  border-top: 1px solid var(--border);
}
.content .checklist-item {
  display: flex; align-items: flex-start; gap: 12px;
  margin: 0; padding: 11px 2px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.content .checklist-box {
  width: 15px; height: 15px; flex-shrink: 0; margin-top: 3px;
  color: var(--text-faint);
}
.content .checklist-item.is-done .checklist-box { color: var(--accent-green); }
.content .checklist-text {
  flex: 1 1 auto; min-width: 0;
  font-size: 13px; line-height: 1.7; color: var(--text-muted);
}
.content .checklist-text > :first-child { margin-top: 0; }
.content .checklist-text > :last-child { margin-bottom: 0; }
.content .checklist-text ul, .content .checklist-text ol { margin: 6px 0 0; }

.content li > .checklist-box { vertical-align: -2px; margin-right: 4px; }

/* ===== Steps ===== */
.mdx-steps { margin: 22px 0; padding-left: 6px; }
.mdx-step { position: relative; padding: 0 0 22px 34px; border-left: 1px solid var(--border-strong); margin-left: 8px; }
.mdx-step:last-child { border-left-color: transparent; padding-bottom: 0; }
.step-dot {
  position: absolute; left: -9px; top: 1px; width: 18px; height: 18px;
  background: var(--surface); border: 2px solid var(--border-strong);
}
.step-dot::after { content: ""; position: absolute; inset: 4px; background: var(--accent); }
.step-title { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.step-content > :first-child { margin-top: 0; }

/* ===== Params (ParamField / ResponseField) ===== */
.param { padding: 16px 0; border-bottom: 1px solid var(--border); }
.param-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.param-name { font-family: var(--font-mono); font-size: 13px; font-weight: 500; color: var(--text); background: none; border: none; padding: 0; }
.param-type { font-size: 12.5px; color: var(--text-faint); font-family: var(--font-mono); }
.param-required { font-size: 11px; font-weight: 600; color: var(--accent-orange); }
.param-default { font-size: 12px; color: var(--text-faint); }
.param-body { margin-top: 6px; }
.param-body p { margin: 6px 0; font-size: 14px; }
.param .param { margin-left: 16px; }

/* ===== Expandable / Accordion ===== */
.mdx-expandable { margin: 14px 0; border: 1px solid var(--border-strong); overflow: hidden; background: var(--surface); }
.mdx-expandable summary {
  cursor: pointer; padding: 12px 16px; font-size: 14px; font-weight: 500;
  color: var(--text); list-style: none; display: flex; align-items: center; gap: 8px;
}
.mdx-expandable summary::before { content: "\203A"; color: var(--text-faint); transition: transform .15s; display: inline-block; }
.mdx-expandable[open] summary::before { transform: rotate(90deg); color: var(--accent); }
.mdx-expandable summary::-webkit-details-marker { display: none; }
.expandable-body { padding: 0 16px 14px; }
.expandable-body > :first-child { margin-top: 0; }
.accordion-group { margin: 18px 0; display: flex; flex-direction: column; gap: 8px; }
.accordion-group .mdx-expandable { margin: 0; }

/* ===== Example blocks / Frame ===== */
.example-block { margin: 22px 0; }
.example-label { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--text-faint); margin-bottom: 8px; }
.mdx-frame { margin: 22px 0; border: 1px solid var(--border-strong); overflow: hidden; background: var(--surface-2); }
.mdx-frame img, .mdx-frame video { display: block; width: 100%; height: auto; }
.mdx-frame figcaption { padding: 10px 14px; font-size: 13px; color: var(--text-faint); text-align: center; }
.content img { width: auto; height: auto; max-width: 100%; max-height: 600px; }
.content video { max-width: 100%; }
.mdx-icon { display: inline-flex; vertical-align: -2px; color: var(--text-muted); }
.mdx-icon svg { width: 15px; height: 15px; }

/* ===== Tabs (interactive) ===== */
.mdx-tabs { margin: 20px 0; }
.tabs-bar {
  display: flex; align-items: center; gap: 4px;
  border-bottom: 1px solid var(--border-strong);
  overflow-x: auto;
}
.tab-btn {
  font-family: var(--font-sans); font-size: 13.5px; font-weight: 500;
  color: var(--nav-text); background: none; border: none; cursor: pointer;
  padding: 9px 12px; white-space: nowrap;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
  transition: color .12s, border-color .12s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.mdx-tabs .mdx-tab { display: none; padding: 4px 2px 0; }
.mdx-tabs .mdx-tab.active { display: block; }
/* a Tab outside <Tabs> renders as a titled panel */
.tab-title { font-weight: 600; font-size: 14px; margin-bottom: 8px; color: var(--text); }

/* ===== Update / Tooltip ===== */
.mdx-update { margin: 22px 0; padding: 14px 16px; border-left: 3px solid var(--accent); background: var(--accent-soft); }
.update-label { font-size: 12px; font-weight: 600; color: var(--accent); margin-bottom: 6px; }
.mdx-tooltip { border-bottom: 1px dotted var(--text-faint); cursor: help; }

/* ===== "Last updated" ===== */
.content .last-updated {
  margin: 48px 0 0; font-size: 12.5px; color: var(--text-faint);
}

/* ===== 404 ===== */
.nf-actions { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 26px 0; }
@media (max-width: 700px) { .nf-actions { grid-template-columns: 1fr; } }
.content kbd {
  display: inline-block; padding: 2px 6px;
  border: 1px solid var(--border-strong); border-bottom-width: 2px;
  background: var(--surface-2);
  font: 500 11.5px/1.4 var(--font-mono); color: var(--text);
}

/* ===== Prev / next page footer ===== */
.page-nav {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  margin-top: 56px; padding-top: 28px;
  border-top: 1px solid var(--border);
}
.pn-link {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border-strong); background: var(--surface);
  transition: border-color .15s ease, background .15s ease;
}
.content a.pn-link, .content a.pn-link:hover { text-decoration: none; color: var(--text); }
.pn-link:hover { border-color: var(--accent); background: var(--hover-soft); }
/* column 2 so a missing "previous" does not pull "next" left */
.pn-next { grid-column: 2; justify-content: flex-end; text-align: right; }
.pn-link svg { width: 16px; height: 16px; flex-shrink: 0; color: var(--text-faint); transition: color .15s ease; }
.pn-link:hover svg { color: var(--accent); }
.pn-text { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.pn-dir { font-size: 12px; color: var(--text-faint); }
.pn-title { font-size: 14px; font-weight: 500; color: var(--text); }
.pn-spacer { display: none; }
@media (max-width: 700px) {
  .page-nav { grid-template-columns: 1fr; }
  .pn-next { grid-column: 1; }
}

/* ===== Mobile nav drawer ===== */
.nav-burger { display: none; }
.nav-backdrop {
  position: fixed; inset: 0; background: rgba(0, 0, 0, 0.45); z-index: 65;
  opacity: 0; pointer-events: none; transition: opacity .25s ease;
}
body.nav-open .nav-backdrop { opacity: 1; pointer-events: auto; }

/* ===== Responsive ===== */
@media (max-width: 1100px) { .content { padding: 28px 24px 100px; } }

@media (max-width: 640px) {
  .card-group { grid-template-columns: 1fr; }
}

/* Tablet: switch tabs from absolute-center to flex-center so they never
   overlap the right-side controls (theme / search / GitHub). */
@media (min-width: 901px) and (max-width: 1290px) {
  .topbar-center {
    position: static;
    transform: none;
    flex: 1;
    justify-content: center;
    min-width: 0;
    overflow: hidden;
  }
  .tab-link { font-size: 13px; padding: 6px 8px; }
  .search { width: 146px; }
}

@media (max-width: 900px) {
  .mob-tab-switcher { display: block; }
  .nav-burger { display: flex; flex-shrink: 0; }
  .sidebar {
    position: fixed; left: 0; top: var(--topbar-height); bottom: 0;
    height: auto; width: min(var(--sidebar-width), 85vw);
    background: var(--bg); z-index: 70;
    transform: translateX(-105%); transition: transform .25s ease;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
  }
  body.nav-open .sidebar { transform: translateX(0); }
  body.nav-open { overflow: hidden; }
  .topbar-center { display: none; }
  .search { width: 44px; }
  .search .placeholder { display: none; }
  .search .kbd { display: none; }
  .repo-btn .label span { display: none; }
  .repo-btn .label { padding: 9px 10px; }
}
@media (max-width: 480px) {
  .topbar { padding: 0 10px; gap: 8px; }
  .topbar-right { gap: 8px; }
  .brand img { height: 20px; }
  .repo-btn .split { padding: 0 6px; }
}

/* anchored headings land below the fixed topbar */
.content h1, .content h2, .content h3, .content h4 {
  scroll-margin-top: calc(var(--topbar-height) + 16px);
}

/* ===== Micro-interactions =====
   shell.js adds .motion to <html> (skipped under prefers-reduced-motion),
   then tags above-fold content with .intro and below-fold blocks with
   .reveal -> .in via IntersectionObserver. Smooth scrolling is applied in JS
   to in-page anchor clicks only, so deep-linked loads still jump instantly. */
@keyframes aep-enter {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}
@keyframes aep-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}
html.motion .intro { animation: aep-enter .7s cubic-bezier(.16, 1, .3, 1) both; }
html.motion .intro-fade { animation: aep-fade .6s ease .12s both; }
html.motion .reveal {
  opacity: 0; transform: translateY(16px);
  transition: opacity .65s cubic-bezier(.16, 1, .3, 1), transform .65s cubic-bezier(.16, 1, .3, 1);
}
html.motion .reveal.in { opacity: 1; transform: none; }
html.motion .sm-overlay:not([hidden]) { animation: aep-fade .2s ease both; }
html.motion .sm-overlay:not([hidden]) .sm-dialog {
  animation: aep-pop .28s cubic-bezier(.16, 1, .3, 1) both;
}
@keyframes aep-pop {
  from { opacity: 0; transform: scale(.985) translateY(6px); }
  to { opacity: 1; transform: none; }
}

/* ===== Search modal (Cmd/Ctrl-K) ===== */
:root {
  --sm-overlay: rgba(255, 255, 255, 0.8);
  --sm-bg: rgba(255, 255, 255, 0.88);
  --sm-footer-bg: #fafafa;
  --sm-active: rgba(125, 129, 135, 0.12);
}
[data-theme="dark"] {
  --sm-overlay: rgba(0, 0, 0, 0.8);
  --sm-bg: rgba(28, 28, 30, 0.78);
  --sm-footer-bg: #1a1a1a;
  --sm-active: rgba(125, 129, 135, 0.16);
}
body.sm-open { overflow: hidden; }
.sm-overlay {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: flex-start; justify-content: center;
  padding: clamp(48px, 13vh, 162px) 16px 16px;
  background: var(--sm-overlay);
}
.sm-overlay[hidden] { display: none; }
.sm-dialog {
  display: flex; flex-direction: column; overflow: hidden;
  width: min(1000px, 100%);
  background: var(--sm-bg);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-strong);

  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}
.sm-input-row { border-bottom: 1px solid var(--border); }
.sm-input {
  width: 100%; height: 48px; padding: 12px;
  font: 16px/1.5 var(--font-sans); color: var(--text);
  background: none; border: none; outline: none;
}
.sm-input::placeholder { color: var(--text-muted); }
.sm-list { min-height: 300px; max-height: 400px; overflow-y: auto; padding: 16px; }
.sm-list { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
.sm-list::-webkit-scrollbar { width: 4px; }
.sm-list::-webkit-scrollbar-track { background: transparent; }
.sm-list::-webkit-scrollbar-thumb { background: var(--border); }
.sm-group + .sm-group { margin-top: 20px; }
.sm-group-label { font-size: 14px; color: var(--nav-text); margin-bottom: 12px; }
.sm-item {
  display: flex; align-items: flex-start; gap: 8px;
  padding: 8px 12px;
  font-size: 14px; color: var(--text);
}
.sm-item.active { background: var(--sm-active); }
.sm-ic { flex: none; display: flex; margin-top: 2px; color: var(--nav-text); }
.sm-ic svg { width: 16px; height: 16px; }
.sm-item-main { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.sm-item-title { font-size: 14px; }
.sm-item-crumb { font-size: 13px; color: var(--nav-text); }
.sm-item-snippet { font-size: 13px; color: var(--text-muted); }
.sm-item mark { background: var(--accent); color: var(--accent-contrast); padding: 0 1px; }
.sm-empty { padding: 24px 12px; font-size: 14px; color: var(--text-muted); }
.sm-footer {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  height: 37px; padding: 4px 12px;
  border-top: 1px solid var(--border);
  background: var(--sm-footer-bg);
  font-size: 13px; color: var(--nav-text);
}
.sm-foot-brand { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; }
.sm-hints { display: flex; align-items: center; gap: 14px; }
.sm-hint { display: inline-flex; align-items: center; gap: 5px; white-space: nowrap; }
.sm-kbd {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 20px; height: 20px; padding: 2px 4px;
  background: rgba(125, 129, 135, 0.16);

  font: 12px var(--font-sans); color: inherit;
}
@media (max-width: 720px) {
  .sm-overlay { padding: 16px 10px; }
  .sm-list { min-height: 0; max-height: 60vh; }
  .sm-hint { display: none; }
  .sm-hint:last-child { display: inline-flex; }
}

/* ===== Print ===== */
@media print {
  .topbar, .sidebar, .toc, .page-actions, .nav-backdrop,
  .skip-link, .page-nav, .mmd-bar, .table-toolbar { display: none !important; }

  html, body { height: auto; background: #fff; color: #000; }
  body { font-size: 10.5pt; }

  html.motion .intro,
  html.motion .intro-fade,
  html.motion .reveal,
  html.motion .reveal.in {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
    transition: none !important;
  }
  .layout { display: block; padding-top: 0; }
  .main-area { display: block; }
  .content { max-width: none; margin: 0; padding: 0; }

  .content h1, .content h2, .content h3, .content h4 {
    break-after: avoid; page-break-after: avoid;
  }
  .content pre, .content table, .mdx-callout, .mdx-card, pre.mermaid, .code-block {
    break-inside: avoid; page-break-inside: avoid;
  }
  .code-block, .mdx-callout, .mdx-card, pre.mermaid, .content table {
    border: 1px solid #bbb; background: #fff !important;
  }
  .shiki, .shiki span, .code-head { background: #fff !important; color: #000 !important; }
  .content pre, .content code { font-size: 9pt; }
  /* no horizontal scrollbar on paper */
  .shiki, .shiki code { white-space: pre-wrap; word-break: break-word; }
  .content table { display: table; }

  .content a { color: #000; text-decoration: underline; }
  .content a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 8.5pt; color: #444; }
  .content a[href^="#"]::after, .content a.h-anchor::after { content: ""; }
  .content a.h-anchor { display: none; }

  .last-updated { color: #444; }
}