.guide-main {
  max-width: 1000px;
  padding-top: 48px;
  padding-bottom: 64px;
}

.guide-intro h1 {
  max-width: 850px;
  margin: 14px 0 20px;
  font-size: clamp(2.3rem, 5vw, 4rem);
  letter-spacing: -0.05em;
  line-height: 1.08;
}

.guide-intro > p:last-of-type {
  max-width: 720px;
  color: var(--muted);
}

.guide-actions,
.guide-toc,
.guide-footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 24px;
}

.guide-actions {
  margin-top: 28px;
}

.guide-toc {
  margin-top: 36px;
  padding: 20px 0;
  border-block: 1px solid var(--line-strong);
  font-size: 0.9rem;
  font-weight: 650;
}

.guide-toc a:hover,
.guide-footer-links a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.guide-section {
  padding: 50px 0;
  scroll-margin-top: 110px;
  border-bottom: 1px solid var(--line);
}

.guide-section h2 {
  max-width: 790px;
  margin: 10px 0 20px;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  letter-spacing: -0.035em;
  line-height: 1.2;
}

.guide-section > p {
  max-width: 800px;
  margin: 14px 0;
}

.guide-section .code-card {
  margin: 24px 0;
  min-width: 0;
}

.guide-detail {
  margin: 10px 0;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.4);
  overflow: hidden;
}

.guide-detail summary {
  padding: 18px 22px;
  cursor: pointer;
  font-weight: 650;
  line-height: 1.5;
}

.guide-detail[open] summary {
  border-bottom: 1px solid var(--line);
}

.guide-detail > div {
  padding: 6px 22px 20px;
}

.guide-detail p,
.guide-note p {
  margin: 14px 0;
}

.guide-detail ul,
.guide-detail ol,
.guide-note ul {
  margin: 16px 0 0;
  padding-left: 24px;
}

.guide-detail li,
.guide-note li {
  margin: 10px 0;
}

.guide-detail li p {
  margin: 3px 0 12px;
}

.guide-detail pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 18px;
  border-radius: 8px;
  color: #e6eee7;
  background: #1d302b;
  font-size: 0.78rem;
  line-height: 1.75;
}

.guide-engine-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 24px 0;
}

.guide-engine-grid article {
  padding: 24px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
}

.guide-engine-grid h3 {
  margin: 0 0 10px;
}

.guide-engine-grid p {
  margin: 12px 0 0;
}

.guide-engine-grid p:last-child {
  color: var(--muted);
  font-size: 0.85rem;
}

.guide-note {
  margin: 24px 0 0;
  padding: 22px 26px;
  border-left: 3px solid var(--accent, #a34225);
  border-radius: 0 12px 12px 0;
  background: #eee8db;
}

.guide-note h3 {
  margin: 0;
}

.guide-note p:last-child {
  margin-bottom: 0;
}

@media (max-width: 600px) {
  .guide-main {
    padding-top: 32px;
  }

  .guide-section {
    padding-block: 34px;
  }

  .guide-engine-grid {
    grid-template-columns: 1fr;
  }

  .guide-detail summary {
    padding: 16px;
  }

  .guide-detail > div {
    padding-inline: 16px;
  }

  .guide-note {
    padding: 18px;
  }
}