/* Long-form guide article */
.guide { max-width: 844px; margin: 0 auto; padding: 48px 50px 72px; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-quiet);
  font: 10px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.075em;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover, .breadcrumb a:focus-visible { color: var(--accent-strong); }
.guide-header { padding: 34px 0 31px; border-bottom: 1px solid var(--hairline); }
.guide-header h1, .api-intro h1, .not-found h1 {
  max-width: 720px;
  margin: 0 0 14px;
  color: var(--text-strong);
  font: 600 clamp(40px, 5.2vw, 58px)/1.02 var(--serif);
  letter-spacing: -0.045em;
}
.guide-header p {
  max-width: 660px;
  margin: 0;
  color: var(--text-muted);
  font-size: 18px;
  line-height: 1.55;
}
.guide-body { padding-top: 24px; color: var(--text); font-size: 15.5px; }
.guide-body h2 {
  margin: 47px 0 14px;
  padding-top: 4px;
  color: var(--text-strong);
  font: 600 29px/1.16 var(--serif);
  letter-spacing: -0.03em;
}
.guide-body h3 {
  margin: 33px 0 10px;
  color: var(--text-strong);
  font: 600 17px/1.35 var(--sans);
  letter-spacing: -0.014em;
}
.guide-body h2[id], .guide-body h3[id] { scroll-margin-top: calc(var(--topbar) + 24px); }
.guide-body .heading-anchor {
  color: var(--text-strong);
  text-decoration: none;
}
.guide-body .heading-anchor:hover,
.guide-body .heading-anchor:focus-visible { color: var(--accent-strong); }
.guide-body p, .guide-body ul, .guide-body ol { margin: 0 0 19px; }
.guide-body li { margin-bottom: 6px; padding-left: 2px; }
.guide-body li::marker { color: var(--accent-strong); }
.guide-body strong { color: var(--text-strong); font-weight: 600; }
.guide-body a {
  color: var(--accent-strong);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--accent) 35%, transparent);
  text-underline-offset: 3px;
}
.guide-body a:hover { text-decoration-color: var(--accent); }
.external-mark { margin-left: 3px; text-decoration: none; }
.guide-body blockquote {
  margin: 27px 0;
  padding: 17px 19px;
  border: 1px solid color-mix(in srgb, var(--accent) 23%, var(--hairline));
  border-left: 3px solid var(--accent);
  border-radius: 0 5px 5px 0;
  background: var(--accent-wash);
  color: var(--text-strong);
}
.guide-body blockquote p:last-child { margin-bottom: 0; }
.guide-body table {
  width: 100%;
  margin: 25px 0;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  background: var(--surface);
  font-size: 13px;
}
.guide-body th {
  padding: 10px 12px;
  border-bottom: 1px solid var(--hairline-strong);
  background: var(--surface-soft);
  color: var(--text-muted);
  text-align: left;
  font: 500 9px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.guide-body td { padding: 10px 12px; border-bottom: 1px solid var(--hairline); vertical-align: top; }
.guide-body tr:last-child td { border-bottom: 0; }
.guide-body code:not(.hljs) {
  padding: 2px 5px;
  border: 1px solid var(--hairline);
  border-radius: 3px;
  background: var(--surface-soft);
  color: var(--warning);
  font: 12px var(--mono);
}
.code-frame {
  margin: 25px 0;
  overflow: hidden;
  border: 1px solid #2a3830;
  border-radius: 7px;
  background: var(--surface-code);
  box-shadow: 0 12px 30px -22px rgba(5, 16, 10, 0.6);
}
.code-bar {
  min-height: 39px;
  padding: 0 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #27332c;
  background: var(--surface-code-bar);
  color: var(--code-muted);
  font: 9px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.code-bar button {
  padding: 4px 7px;
  border: 1px solid #33443a;
  border-radius: 3px;
  background: transparent;
  color: #92c7aa;
  cursor: pointer;
  font-size: 9px;
}
.code-bar button:hover { border-color: #4d6d5c; color: #c4ead2; }
.code-frame pre { margin: 0; padding: 17px 18px; overflow-x: auto; scrollbar-color: #33443a transparent; }
.code-frame code { font: 12.5px/1.68 var(--mono); }
.hljs { color: var(--code-text); background: transparent; }
.hljs-string, .hljs-attr { color: var(--code-green); }
.hljs-number, .hljs-literal { color: var(--code-gold); }
.hljs-keyword, .hljs-selector-tag { color: var(--code-blue); }
.hljs-comment { color: var(--code-muted); }
.page-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 56px;
  padding-top: 23px;
  border-top: 1px solid var(--hairline);
}
.page-navigation a {
  display: flex;
  flex-direction: column;
  min-height: 83px;
  padding: 14px 15px;
  border: 1px solid var(--hairline);
  border-radius: 5px;
  background: var(--surface);
  transition: border-color 160ms ease, transform 160ms var(--ease);
}
.page-navigation a:hover { border-color: var(--accent); transform: translateY(-1px); }
.page-navigation a:last-child { text-align: right; align-items: flex-end; }
.page-navigation small {
  color: var(--text-quiet);
  font: 9px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.page-navigation strong { margin-top: 4px; color: var(--text-strong); font-size: 13px; font-weight: 500; }

/* Page outline */
.toc {
  grid-column: 3;
  position: sticky;
  top: var(--topbar);
  height: calc(100vh - var(--topbar));
  padding: 44px 20px 32px;
  border-left: 1px solid var(--hairline);
  overflow-y: auto;
  background: color-mix(in srgb, var(--surface) 55%, transparent);
}
.toc > p {
  margin: 0 0 14px;
  color: var(--text-quiet);
  font: 500 9px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.11em;
}
.toc ol { list-style: none; margin: 0; padding: 0; }
.toc li { position: relative; margin: 8px 0; }
.toc li[data-level="3"] { padding-left: 12px; }
.toc li[data-level="3"]::before {
  position: absolute;
  top: 0;
  left: 1px;
  content: "·";
  color: var(--text-quiet);
}
.toc a { display: block; color: var(--text-muted); font-size: 11.5px; line-height: 1.38; }
.toc a:hover, .toc a.active { color: var(--accent-strong); }
.toc a.active { font-weight: 500; }
.toc-support {
  display: block;
  margin-top: 26px;
  padding-top: 15px;
  border-top: 1px solid var(--hairline);
  font-size: 11px;
}
/* Guide layer: wide desktop */
@media (max-width: 900px) {
  .guide { padding: 41px 30px 64px; }
}
@media (max-width: 560px) {
  .guide { padding: 31px 19px 55px; }
  .guide-header { padding-top: 27px; }
  .guide-header h1 { font-size: 42px; line-height: 1.02; }
  .guide-header p { font-size: 16px; }
  .guide-body { font-size: 15px; }
  .guide-body h2 { font-size: 27px; }
  .guide-body table { display: block; overflow-x: auto; }
  .page-navigation { grid-template-columns: 1fr; }
}