.guide-page {
  max-width: 960px;
}

.guide-breadcrumbs,
.guide-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

.guide-breadcrumbs {
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 0.82rem;
}

.guide-nav {
  margin: 34px 0 0;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.guide-nav a[aria-current="page"] {
  color: var(--accent);
}

.guide-grid {
  display: grid;
  margin-top: 42px;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 0.52fr);
  gap: 48px;
}

.guide-article,
.guide-aside,
.faq-list {
  display: grid;
  gap: 28px;
}

.guide-article section,
.guide-aside section,
.faq-list details {
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.guide-article h2,
.guide-aside h2,
.faq-list h2 {
  margin: 0 0 10px;
  font-size: 1.16rem;
}

.guide-article p,
.guide-aside p,
.guide-article li,
.guide-aside li,
.faq-list p {
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.78;
}

.guide-article ul,
.guide-article ol,
.guide-aside ul {
  margin: 12px 0 0;
  padding-left: 1.25em;
}

.decision-order {
  display: grid;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.decision-order li {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.decision-order span {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 760;
}

.boundary-box {
  padding: 18px;
  border-left: 3px solid var(--accent);
  background: rgba(31, 107, 91, 0.05);
}

.faq-list {
  margin-top: 48px;
}

.faq-list details {
  padding-bottom: 2px;
}

.faq-list summary {
  cursor: pointer;
  color: var(--ink);
  font-weight: 700;
}

.source-list {
  display: grid;
  gap: 12px;
  padding-left: 1.2em;
}

.source-list li {
  color: var(--muted);
  line-height: 1.65;
}

.source-scope {
  margin-top: 16px;
  padding: 14px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.65;
}

@media (max-width: 720px) {
  .guide-grid,
  .decision-order {
    grid-template-columns: 1fr;
  }

  .guide-grid {
    gap: 30px;
  }
}