/* --- Subpages --- */
.subpage {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.subpage-header {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--slate-400);
}

.breadcrumb a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--slate-500);
  font-weight: 500;
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--cinnabar);
}

.breadcrumb-icon {
  flex-shrink: 0;
  opacity: 0.7;
}

.breadcrumb-current {
  color: var(--slate-700);
  font-weight: 600;
}

.breadcrumb-sep {
  color: var(--slate-300);
}

.subpage-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
}

.subpage-content h1 {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  color: var(--slate-900);
}

.subpage-date {
  color: var(--slate-400);
  font-size: 0.875rem;
  margin-bottom: 2rem;
}

.subpage-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--slate-900);
}

.subpage-content p {
  color: var(--slate-600);
  line-height: 1.7;
  margin-bottom: 0.75rem;
}

.subpage-content ul {
  color: var(--slate-600);
  line-height: 1.7;
  padding-left: 1.25rem;
  margin-bottom: 0.75rem;
}

.subpage-content li {
  margin-bottom: 0.25rem;
}

.subpage-content a {
  color: var(--cinnabar);
  font-weight: 600;
  text-decoration: none;
}

.subpage-content a:hover {
  color: var(--amber);
  text-decoration: underline;
}