:root {
  --code-bg: #f6f8fc;
  --code-line: #d7e1f0;
  --code-text: #243b53;
  --code-comment: #6b7f99;
  --code-keyword: #a626a4;
  --code-string: #0a7d4f;
  --code-number: #b45309;
  --code-function: #0052cc;
  --code-builtin: #0e7490;
  --code-attr: #b45309;
  --code-tag: #0052cc;
  --code-punct: #5a6b84;
}

[data-theme="dark"] {
  --code-bg: #08111f;
  --code-line: #1d3550;
  --code-text: #c7d7ec;
  --code-comment: #6b7f99;
  --code-keyword: #c792ea;
  --code-string: #7ee787;
  --code-number: #ffab70;
  --code-function: #82aaff;
  --code-builtin: #22d3ee;
  --code-attr: #ffab70;
  --code-tag: #82aaff;
  --code-punct: #93a4bd;
}

.guide-main {
  padding: 40px 0 88px;
}

.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 232px;
  gap: 48px;
  align-items: start;
}

.guide-layout > * {
  min-width: 0;
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 8px 0 18px;
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 600;
}

.crumbs a {
  color: var(--muted);
  text-decoration: none;
}

.crumbs a:hover,
.crumbs a:focus-visible {
  color: var(--accent-text);
}

.crumbs .sep {
  opacity: 0.5;
}

.crumbs .current {
  color: var(--text);
}

.doc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 26px;
}

.chip-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--bg-elev);
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 650;
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.chip-link:hover,
.chip-link:focus-visible {
  border-color: var(--accent);
  color: var(--accent-text);
}

.chip-link svg {
  width: 14px;
  height: 14px;
}

.doc {
  min-width: 0;
  color: var(--text);
  font-size: 15.5px;
  line-height: 1.72;
}

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

.doc h1 {
  margin: 0 0 18px;
  font-size: clamp(2rem, 4vw, 2.9rem);
  font-weight: 850;
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.doc h2 {
  margin: 44px 0 14px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.2;
}

.doc h3 {
  margin: 32px 0 10px;
  font-size: 1.2rem;
  font-weight: 750;
  letter-spacing: -0.025em;
}

.doc h4 {
  margin: 26px 0 8px;
  color: var(--accent-text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.doc p {
  margin: 0 0 15px;
}

.doc a {
  color: var(--accent-text);
  text-decoration: none;
  text-underline-offset: 3px;
}

.doc a:hover,
.doc a:focus-visible {
  text-decoration: underline;
}

.doc strong {
  font-weight: 700;
}

.doc ul,
.doc ol {
  margin: 0 0 16px;
  padding-left: 22px;
}

.doc li {
  margin: 5px 0;
}

.doc li::marker {
  color: var(--accent);
}

.doc img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #f3f8ff;
}

.doc hr {
  height: 1px;
  margin: 34px 0;
  border: 0;
  background: var(--line);
}

.doc blockquote {
  margin: 0 0 18px;
  padding: 12px 16px;
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
  background: var(--bg-soft);
  color: var(--muted);
}

.doc blockquote p:last-child {
  margin-bottom: 0;
}

.doc code {
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--bg-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85em;
}

.doc pre {
  margin: 0 0 20px;
  padding: 16px 18px;
  overflow-x: auto;
  border: 1px solid var(--code-line);
  border-radius: 12px;
  background: var(--code-bg);
}

.doc pre code {
  padding: 0;
  background: none;
  color: var(--code-text);
  font-size: 12.5px;
  line-height: 1.7;
}

.doc pre code.hljs {
  display: block;
}

.hljs-comment,
.hljs-quote {
  color: var(--code-comment);
  font-style: italic;
}

.hljs-keyword,
.hljs-selector-tag,
.hljs-literal,
.hljs-doctag,
.hljs-formula {
  color: var(--code-keyword);
}

.hljs-string,
.hljs-regexp,
.hljs-addition,
.hljs-attribute,
.hljs-meta .hljs-string {
  color: var(--code-string);
}

.hljs-number,
.hljs-symbol,
.hljs-bullet,
.hljs-link,
.hljs-selector-attr,
.hljs-selector-pseudo,
.hljs-template-variable,
.hljs-variable {
  color: var(--code-number);
}

.hljs-title,
.hljs-title.class_,
.hljs-title.function_,
.hljs-section {
  color: var(--code-function);
}

.hljs-built_in,
.hljs-type,
.hljs-class .hljs-title {
  color: var(--code-builtin);
}

.hljs-attr,
.hljs-property,
.hljs-params {
  color: var(--code-attr);
}

.hljs-tag,
.hljs-name,
.hljs-selector-id,
.hljs-selector-class {
  color: var(--code-tag);
}

.hljs-meta {
  color: var(--code-comment);
}

.hljs-punctuation,
.hljs-operator {
  color: var(--code-punct);
}

.hljs-emphasis {
  font-style: italic;
}

.hljs-strong {
  font-weight: 700;
}

.hljs-deletion {
  color: #e06c75;
}

.table-wrap {
  margin: 0 0 22px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.doc table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.doc th,
.doc td {
  padding: 10px 13px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.doc thead th {
  background: var(--bg-soft);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.doc tbody tr:last-child td {
  border-bottom: 0;
}

.doc tbody tr:hover td {
  background: var(--bg-soft);
}

.doc .doc-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-soft);
  font-size: 13px;
}

.doc .doc-meta::before {
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--bg-elev);
  color: var(--accent-text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  content: "COMPLEXITY";
}

.doc .doc-meta strong {
  font-weight: 700;
}

.doc h1,
.doc h2,
.doc h3,
.doc h4 {
  scroll-margin-top: 88px;
}

.toc {
  position: sticky;
  top: 92px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  align-self: start;
}

.toc-title {
  margin: 0 0 12px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.toc a {
  display: block;
  padding: 5px 10px;
  border-left: 2px solid var(--line);
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.4;
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.toc a:hover,
.toc a:focus-visible {
  color: var(--text);
}

.toc a.is-active {
  border-left-color: var(--accent);
  color: var(--accent-text);
  font-weight: 650;
}

.toc .toc-h3 a {
  padding-left: 22px;
  font-size: 12px;
}

.toc .toc-h4 a {
  padding-left: 34px;
  font-size: 11.5px;
}

.toc-mobile {
  margin: 0 0 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-elev);
}

.toc-mobile summary {
  padding: 12px 15px;
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.toc-mobile ol {
  margin: 0;
  padding: 0 15px 14px;
  list-style: none;
}

.toc-mobile a {
  display: block;
  padding: 5px 0;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
}

.doc-status {
  margin: 0 0 20px;
  padding: 16px 18px;
  border: 1px dashed var(--line);
  border-radius: 12px;
  color: var(--muted);
  font-size: 14px;
}

.doc-status strong {
  display: block;
  margin-bottom: 4px;
  color: var(--text);
}

.doc-status a {
  color: var(--accent-text);
}

@media (max-width: 980px) {
  .guide-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .toc {
    display: none;
  }
}

@media (min-width: 981px) {
  .toc-mobile {
    display: none;
  }
}

@media (max-width: 560px) {
  .guide-main {
    padding: 26px 0 64px;
  }

  .doc {
    font-size: 15px;
  }

  .doc h2 {
    margin-top: 34px;
  }

  .doc th,
  .doc td {
    padding: 8px 10px;
  }
}