.developer-guide-page {
  display: grid;
  gap: var(--section-spacing);
}

.developer-hero {
  display: grid;
  gap: 1rem;
  padding: clamp(1.2rem, 3vw, 1.8rem);
}

@media (min-width: 76rem) {
  .developer-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(20rem, 0.85fr);
    align-items: stretch;
  }
}

.guide-kicker {
  color: var(--text-muted);
  margin: 0;
  text-transform: uppercase;
}

.developer-hero h1 {
  max-width: 58rem;
  margin: 0.55rem 0 0;
  font-size: clamp(2.2rem, 5vw, 5.7rem);
  line-height: 0.9;
  letter-spacing: -0.065em;
  text-transform: uppercase;
}

.guide-lead {
  max-width: 54rem;
  margin: 1rem 0 0;
  color: var(--text-secondary);
  font-size: clamp(1rem, 1.4vw, 1.2rem);
}

.guide-actions {
  margin-top: 1rem;
}

.guide-stack-card {
  display: grid;
  align-content: center;
  gap: 0.75rem;
  padding: 1rem;
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at top right, rgba(142, 166, 200, 0.18), transparent 45%),
    var(--surface-secondary);
}

.guide-stack-card strong {
  display: block;
  font-size: clamp(1.25rem, 2vw, 2rem);
  line-height: 1;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.guide-stack-card p {
  margin: 0;
  color: var(--text-secondary);
}

.guide-kernel-strip {
  overflow: hidden;
  border: 1px solid var(--surface-border-strong);
  border-radius: var(--radius-pill);
  background: var(--surface-primary);
  box-shadow: var(--shadow-soft);
}

.guide-kernel-strip__track {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.72rem;
  line-height: 1;
}

.guide-kernel-strip__track span {
  padding: 0.9rem 1rem;
  border-right: 1px solid var(--surface-border);
}

.guide-kernel-strip__track span:nth-child(odd) {
  color: var(--text-primary);
  font-weight: 900;
}

.guide-kernel-strip__track span:last-child {
  border-right: 0;
}

.guide-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 72rem) {
  .guide-grid {
    grid-template-columns: minmax(14rem, 0.28fr) minmax(0, 1fr);
    align-items: start;
  }
}

.guide-toc {
  position: sticky;
  top: 5.5rem;
  display: grid;
  gap: 0.35rem;
  padding: 1rem;
}

.guide-toc p {
  margin: 0 0 0.45rem;
  color: var(--text-muted);
}

.guide-toc a {
  display: block;
  padding: 0.55rem 0.65rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-decoration: none;
}

.guide-toc a:hover {
  border-color: var(--surface-border);
  color: var(--text-primary);
  background: var(--surface-secondary);
}

.guide-document {
  padding: clamp(1rem, 2.4vw, 2rem);
}

.guide-section {
  scroll-margin-top: 6rem;
  padding: 1.6rem 0;
  border-top: 1px solid var(--surface-border);
}

.guide-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.guide-section > .meta-mono {
  margin: 0 0 0.6rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.guide-section h2 {
  margin: 0 0 0.8rem;
  font-size: clamp(1.75rem, 4vw, 3.6rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
  text-transform: uppercase;
}

.guide-section h3 {
  margin: 1.2rem 0 0.45rem;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

.guide-section p,
.guide-section li {
  color: var(--text-secondary);
}

.guide-section a:not(.button):not(.button-primary):not(.button-secondary):not(.button-ghost) {
  color: var(--accent);
  font-weight: 800;
}

.guide-section code,
.guide-section pre,
.guide-section blockquote {
  font-family: "JetBrains Mono", var(--font-mono);
}

.guide-note {
  margin: 1rem 0;
  padding: 1rem;
  border: 1px solid var(--surface-border-strong);
  border-left: 0.35rem solid var(--accent-soft);
  border-radius: var(--radius-xl);
  background: var(--surface-secondary);
  color: var(--text-secondary);
}

.guide-note strong {
  color: var(--text-primary);
}

.guide-section pre,
.guide-section blockquote {
  margin: 0.8rem 0;
  padding: 1rem;
  border: 1px solid var(--surface-border-strong);
  border-radius: var(--radius-xl);
  background: var(--surface-secondary);
  color: var(--text-primary);
  overflow: auto;
}

.guide-section code {
  padding: 0.15rem 0.32rem;
  border-radius: 0.35rem;
  background: rgba(128, 128, 128, 0.1);
  color: var(--text-primary);
}

.guide-section pre code {
  padding: 0;
  background: transparent;
}

.implementation-grid,
.guide-card-grid {
  display: grid;
  gap: 0.85rem;
  margin-top: 1rem;
}

@media (min-width: 68rem) {
  .implementation-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .guide-card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.implementation-grid article,
.guide-card-grid article {
  padding: 1rem;
  border: 1px solid var(--surface-border-strong);
  border-radius: var(--radius-xl);
  background: var(--surface-secondary);
}

.implementation-grid h3,
.guide-card-grid h3 {
  margin-top: 0;
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 0;
  list-style: none;
}

.pill-list li {
  padding: 0.42rem 0.7rem;
  border: 1px solid var(--surface-border-strong);
  border-radius: 999px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
}

@media (max-width: 72rem) {
  .guide-toc {
    position: static;
  }
}