.guide-intro {
  padding: 68px 0 42px;
  border-bottom: 1px solid var(--line-strong);
}

.breadcrumbs {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.guide-intro h1 {
  max-width: 950px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  font-weight: 600;
  letter-spacing: -0.055em;
  line-height: 1.05;
}

.guide-intro h1 em {
  color: var(--cyan);
}

.guide-lede {
  max-width: 780px;
  margin: 26px 0 22px;
  color: var(--muted);
  font-size: 1.05rem;
}

.guide-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.guide-layout {
  display: grid;
  align-items: start;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 52px;
  padding-block: 48px 80px;
}

.guide-nav {
  position: sticky;
  top: calc(var(--header) + 28px);
}

.guide-nav-label {
  margin: 0 0 16px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.guide-nav ol {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.guide-nav a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 10px;
  border-left: 2px solid var(--line);
  font-size: 0.8rem;
  text-decoration: none;
}

.guide-nav a span {
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.65rem;
}

.guide-nav a:hover,
.guide-nav a:focus-visible {
  border-color: var(--cyan);
  background: var(--cyan-wash);
}

.guide-nav-note {
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
}

.guide-content {
  min-width: 0;
}

.guide-step + .guide-step {
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--line-strong);
}

.guide-step-heading {
  display: flex;
  align-items: baseline;
  gap: 15px;
}

.guide-step-number {
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.86rem;
}

.guide-step h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.2;
}

.guide-step p {
  margin: 16px 0;
  color: var(--muted);
  font-size: 0.93rem;
}

.guide-step p code,
.guide-nav-note code {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.84em;
  overflow-wrap: anywhere;
}

.guide-step .code-panel {
  border: 1px solid var(--dark-line);
}

.guide-step .code-toolbar {
  min-height: 46px;
  font-size: 0.65rem;
}

.guide-step .copy-button {
  min-height: 32px;
  font-size: 0.65rem;
}

.guide-step pre code {
  font-size: 0.76rem;
}

.guide-step .step-note {
  padding: 14px 18px;
  border-left: 3px solid var(--cyan);
  background: var(--cyan-wash);
  color: var(--ink);
  font-size: 0.85rem;
}

.guide-step .step-note.causal-note {
  border-color: var(--acid-dark);
  background: var(--acid-wash);
}

.guide-next {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line-strong);
  font-family: var(--mono);
  font-size: 0.75rem;
}

.site-nav a[aria-current="page"] {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 6px;
}

@media (min-width: 721px) and (max-width: 980px) {
  .guide-page .site-nav > a:not(.nav-github) {
    display: inline-flex;
  }
}

@media (max-width: 980px) {
  .guide-layout {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 28px;
  }
}

@media (max-width: 720px) {
  .guide-intro {
    padding-block: 36px 30px;
  }

  .breadcrumbs {
    margin-bottom: 26px;
  }

  .guide-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding-block: 30px 48px;
  }

  .guide-nav {
    position: static;
  }

  .guide-nav ol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .guide-nav-note {
    margin-top: 16px;
  }

  .guide-step pre code {
    padding: 18px 16px;
    font-size: 0.72rem;
  }
}