/* Visual source: .reference/kb-v2.0/assets/{theme,site}.css.
   Composition source: .reference/prototype-v0.4.html. */
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url("../fonts/JetBrainsMono-cyrillic-400-500.woff2") format("woff2");
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url("../fonts/JetBrainsMono-latin-400-500.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
:root {
  --ink: #202124;
  --body: #565c62;
  --line: #a6abb1;
  --paper: #fff;
  --accent: #d8c62a;
  --blue: #b8d8f0;
  --lightgray: #eceeef;
  --almost: #f8f9fa;
  --medium: #a8adb2;
  --rule: #c9cdd0;
  --radius:7px;
  --gutter: 12px;
  --section-padding: clamp(28px, 4vw, 72px);
  --header-height: 63px;
  --header-inset: 12px;
  --header-offset: calc(var(--header-height) + var(--header-inset));
  --label-font: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --ease: cubic-bezier(.22, .61, .36, 1);
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-offset) + 24px); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.5 Arial, Helvetica, sans-serif;
  letter-spacing: -.012em;
  -webkit-font-smoothing: antialiased;
}
body:has(dialog[open]), body.menu-open { overflow: hidden; }
button, input, select, textarea { font: inherit; }
button { color: inherit; cursor: pointer; }
button:disabled { cursor: not-allowed; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, p, figure { margin: 0; }
h1, h2, h3 { font-weight: 700; line-height: 1.06; letter-spacing: -.055em; }
h1, h2 { text-wrap: balance; }
p { line-height: 1.53; text-wrap: pretty; }
button:focus-visible, a:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 3px solid #2b617f;
  outline-offset: 3px;
}
::selection { background: var(--accent); color: var(--ink); }
[hidden] { display: none !important; }
svg { flex: none; }
.num, .eyebrow, .label, .mono, .section-no, .tiny, .group-no {
  font-family: var(--label-font);
  font-weight: 400;
  letter-spacing: .025em;
}
.eyebrow { font-size: 11px; line-height: 1.5; text-transform: uppercase; }
.caption { font-size: 13px; line-height: 1.5; color: var(--body); }
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  z-index: 500;
  top: 8px;
  left: 12px;
  transform: translateY(-160%);
  border-radius:var(--radius);
  padding: 12px 20px;
  background: var(--ink);
  color: var(--paper);
}
.skip-link:focus { transform: none; }
.chevron {
  display: inline-block;
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  stroke-linecap: square;
  stroke-linejoin: miter;
  transform: rotate(var(--chevron-angle, 0deg));
  transition: transform 180ms var(--ease);
}
.chevron-back { --chevron-angle: 180deg; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 100%;
  min-height: 54px;
  padding: 15px 21px;
  border: 1px solid var(--ink);
  border-radius:var(--radius);
  background: transparent;
  color: var(--ink);
  font: 400 12px/1.3 var(--label-font);
  text-transform: uppercase;
  letter-spacing: .035em;
  text-align: left;
  transition: background-color 160ms, color 160ms, transform 180ms var(--ease);
}
.btn.primary { background: var(--accent); }
.btn.dark { background: var(--ink); color: var(--paper); }
.btn.light { background: var(--paper); }
.btn:disabled { opacity: .65; }
.btn:active { transform: translateY(1px); }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  min-height: 44px;
  border: 0;
  border-bottom: 1px solid currentColor;
  background: none;
  padding: 7px 0;
  font: 12px/1.4 var(--label-font);
  text-transform: uppercase;
  letter-spacing: .015em;
  text-align: left;
}
.panel {
  position: relative;
  min-width: 0;
  border-radius:var(--radius);
  padding: clamp(30px, 4vw, 61px);
}
.panel + .panel { margin-top: 12px; }
.panel .eyebrow { margin-bottom: 22px; }
.panel > h2 { margin-bottom: 28px; font-size: clamp(34px, 3.8vw, 58px); text-transform: lowercase; }
.panel > p + p { margin-top: 18px; }
.headline { font-size: clamp(44px, 5.4vw, 83px); line-height: .99; letter-spacing: -.063em; text-transform: lowercase; overflow-wrap: break-word; }
.leadin { max-width: 740px; font-size: clamp(16px, 1.6vw, 22px); line-height: 1.43; color: var(--body); }
.surface-white { background: var(--paper); }
.surface-light { background: var(--lightgray); }
.surface-blue { background: var(--blue); }
.surface-yellow { --body: #202124; background: var(--accent); }
.surface-almost { background: var(--almost); }
.surface-medium { --body: #3c4043; background: var(--medium); }
.surface-ink { background: var(--ink); color: var(--almost); }
.surface-ink .leadin { color: #d1d6d9; }
.surface-yellow .leadin, .surface-medium .leadin { color: var(--body); }
.page-intro .leadin { margin-top: 21px; }
.version-line { margin-top: 18px; color: var(--body); font: 10px/1.6 var(--label-font); text-transform: uppercase; }
.storage-notice { margin: 12px; padding: 14px 20px; border: 1px solid var(--line); border-radius:var(--radius); background: var(--almost); font-size: 14px; }
.form-error { margin: 10px 0; color: #9f3025; font-size: 14px; line-height: 1.5; }
.empty-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 20px; }
@media (hover: hover) {
  .btn:hover:not(:disabled) { box-shadow: inset 0 0 0 1px currentColor; }
  .btn:hover .chevron, .clickable:hover .chevron { transform: translateX(2px) rotate(var(--chevron-angle, 0deg)); }
}
@media (max-width: 1060px) {
  :root { --header-inset: 8px; --header-height: 56px; }
  .panel { padding: 28px 26px; }
}
@media (max-width: 700px) {
  :root { --radius:7px; --gutter: 8px; --section-padding: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}