.guide-hero {
  background: var(--dark-section);
  color: var(--on-dark);
  padding: clamp(3.8rem, 8vw, 6.5rem) 0 clamp(3.2rem, 6vw, 5rem);
  border-bottom: 4px solid var(--accent);
}
.guide-hero h1 {
  max-width: 18ch;
  margin: 0;
  color: var(--on-dark);
  font-size: clamp(2.3rem, 5.2vw, 4.4rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}
.guide-hero .eyebrow { color: var(--on-dark); opacity: .82; }
.guide-hero .button-secondary { color: var(--on-dark); border-color: #ffffff66; }
.guide-hero .button-secondary:hover { background: #ffffff15; border-color: var(--on-dark); }
.guide-intro {
  max-width: 780px;
  margin: 1.35rem 0 0;
  color: var(--on-dark);
  font-size: clamp(1rem, 1.8vw, 1.18rem);
  line-height: 1.85;
  opacity: 0.88;
}
.guide-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.8rem;
}
.guide-layout {
  display: grid;
  grid-template-columns: minmax(190px, 240px) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
  padding-top: clamp(2.8rem, 5vw, 4.5rem);
  padding-bottom: clamp(4rem, 7vw, 6rem);
}
.guide-toc {
  position: sticky;
  top: 2rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
}
.guide-toc-title {
  margin: 0 0 0.8rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.guide-toc ol {
  display: grid;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: guide-toc;
}
.guide-toc li { counter-increment: guide-toc; }
.guide-toc a {
  display: grid;
  grid-template-columns: 1.7rem 1fr;
  gap: 0.25rem;
  padding: 0.44rem 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}
.guide-toc a::before {
  content: counter(guide-toc, decimal-leading-zero);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.72rem;
}
.guide-toc a:hover { color: var(--text); }
.guide-section {
  scroll-margin-top: 2rem;
  padding: 0 0 clamp(2.8rem, 5vw, 4rem);
  margin: 0 0 clamp(2.8rem, 5vw, 4rem);
  border-bottom: 1px solid var(--line);
}
.guide-section:last-child { padding-bottom: 0; margin-bottom: 0; border-bottom: 0; }
.guide-section h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  line-height: 1.22;
  letter-spacing: -0.025em;
}
.guide-section h3 {
  margin: 1.8rem 0 0.75rem;
  font-size: 1.2rem;
}
.guide-section p { margin: 0.9rem 0; line-height: 1.85; }
.guide-section a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.step-list {
  margin: 1.25rem 0;
  padding: 0;
  list-style: none;
  counter-reset: guide-step;
}
.step-list > li {
  position: relative;
  padding-left: 2.8rem;
  margin: 0 0 1.15rem;
  line-height: 1.8;
  counter-increment: guide-step;
}
.step-list > li::before {
  content: counter(guide-step);
  position: absolute;
  top: 0.15rem;
  left: 0;
  display: grid;
  place-items: center;
  width: 1.9rem;
  height: 1.9rem;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 50%;
  font-size: 0.82rem;
  font-weight: 700;
}
.code-block {
  margin: 1rem 0 1.35rem;
  padding: 1rem 1.2rem;
  background: var(--dark-section);
  color: var(--on-dark);
  border-radius: 6px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.65;
}
.code-block code {
  padding: 0;
  background: transparent;
  color: inherit;
}
.callout {
  margin: 1.35rem 0;
  padding: 1.1rem 1.25rem;
  background: var(--surface);
  border-left: 3px solid var(--accent);
  font-size: 0.94rem;
}
@media (max-width: 960px) {
  .guide-layout { grid-template-columns: 1fr; }
  .guide-toc { position: static; }
}