/* Blog styles */

.blog-main {
  padding-top: 80px;
}

.blog-hero {
  padding: 60px 0 40px;
  text-align: center;
}

.blog-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}

.blog-hero-subtitle {
  color: var(--color-text-muted);
  font-size: 1rem;
}

/* Blog list */
.blog-list-section {
  padding: 20px 0 80px;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.blog-card {
  display: block;
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  text-decoration: none;
  color: inherit;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 40px rgba(99, 102, 241, 0.12);
  border-color: var(--color-primary);
}

.blog-card-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-primary-light);
  background: rgba(99, 102, 241, 0.1);
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}

.blog-card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.5;
  margin-bottom: 12px;
}

.blog-card-excerpt {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.blog-card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Article page */
.article-header {
  padding: 60px 0 32px;
  text-align: center;
  max-width: 740px;
  margin: 0 auto;
}

.article-breadcrumb {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.article-breadcrumb a {
  color: var(--color-primary-light);
  transition: color var(--transition);
}

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

.article-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary-light);
  background: rgba(99, 102, 241, 0.1);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.article-title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.5;
  margin-bottom: 16px;
}

.article-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  display: flex;
  justify-content: center;
  gap: 20px;
}

.article-body {
  max-width: 740px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.article-body h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-white);
  margin: 48px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border);
}

.article-body h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-white);
  margin: 32px 0 12px;
}

.article-body p {
  font-size: 0.95rem;
  line-height: 2;
  color: var(--color-text);
  margin-bottom: 20px;
}

.article-body ul,
.article-body ol {
  margin: 16px 0 24px 20px;
  color: var(--color-text);
}

.article-body li {
  font-size: 0.95rem;
  line-height: 2;
  margin-bottom: 6px;
}

.article-body strong {
  color: var(--color-white);
  font-weight: 600;
}

.article-highlight {
  background: rgba(99, 102, 241, 0.08);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  margin: 24px 0;
}

.article-highlight p {
  margin-bottom: 0;
  color: var(--color-text);
}

.article-cta {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  margin: 48px 0;
}

.article-cta h3 {
  margin-top: 0;
  margin-bottom: 12px;
}

.article-cta p {
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.article-cta .btn-primary {
  margin-top: 0;
}

.article-nav {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.article-nav a {
  font-size: 0.85rem;
  color: var(--color-primary-light);
  transition: color var(--transition);
}

.article-nav a:hover {
  color: var(--color-white);
}

/* Responsive */
@media (max-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .article-header {
    padding: 40px 24px 24px;
  }

  .article-meta {
    flex-direction: column;
    gap: 4px;
  }

  .article-body h2 {
    font-size: 1.2rem;
  }
}

/* ========================================
   記事詳細ページ用スタイル（line-hp-sns等）
   ======================================== */

.blog-container {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 40px;
  padding-top: 20px;
}

.breadcrumb a {
  color: var(--color-primary-light);
  text-decoration: none;
}

.article-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.tag {
  background: rgba(99, 102, 241, 0.15);
  color: var(--color-primary-light);
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.article-subtitle {
  font-size: 1.05rem;
  color: var(--color-primary-light);
  margin-bottom: 16px;
}

.article-lead {
  background: rgba(99, 102, 241, 0.06);
  border-left: 3px solid var(--color-primary);
  padding: 20px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 40px;
}

.toc {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 48px;
}

.toc-title {
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.toc ol { padding-left: 20px; }
.toc li { margin-bottom: 6px; font-size: 0.9rem; }
.toc a { color: var(--color-primary-light); text-decoration: none; }

.blog-article section { margin-bottom: 56px; }

.blog-article h2 {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--color-white);
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: 10px;
  margin-bottom: 20px;
}

.blog-article h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-white);
  margin: 24px 0 12px;
}

.blog-article p { margin-bottom: 16px; line-height: 1.85; }
.blog-article ul, .blog-article ol { padding-left: 24px; margin-bottom: 16px; }
.blog-article li { margin-bottom: 6px; line-height: 1.7; }
.blog-article strong { color: var(--color-white); }

.info-box {
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin: 24px 0;
}
.info-box.warning {
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid rgba(251, 191, 36, 0.25);
}
.info-box.tip {
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.triangle-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  margin: 24px 0;
}
.triangle-arrow { color: var(--color-primary-light); font-size: 1.5rem; text-align: center; }
.triangle-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}
.triangle-card.sns { border-color: rgba(236,72,153,0.3); }
.triangle-card.hp  { border-color: rgba(99,102,241,0.4); }
.triangle-card.line { border-color: rgba(34,197,94,0.3); }
.triangle-icon { font-size: 2rem; margin-bottom: 8px; }
.triangle-card h3 { font-size: 0.95rem; margin: 0 0 8px; color: var(--color-white); }
.role-label { font-size: 0.8rem; color: var(--color-text-muted); }
.triangle-card p { font-size: 0.85rem; line-height: 1.6; }

.step-list { display: flex; flex-direction: column; gap: 20px; margin: 24px 0; }
.step { display: flex; gap: 20px; align-items: flex-start; }
.step-num {
  flex-shrink: 0;
  width: 44px; height: 44px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.85rem; color: white;
}

.checklist-box {
  background: rgba(34, 197, 94, 0.06);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin: 24px 0;
}
.checklist-box ul { list-style: none; padding-left: 0; }
.checklist-box li::before { content: "✅ "; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 24px 0; }
.col-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.case-results { display: flex; flex-direction: column; gap: 12px; margin: 24px 0; }
.result-item {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border-radius: var(--radius-sm);
}
.result-before { color: rgba(255,255,255,0.35); font-size: 0.9rem; text-decoration: line-through; }
.result-arrow { color: var(--color-primary-light); font-weight: 700; }
.result-after { color: #16a34a; font-size: 0.9rem; font-weight: 600; }

.faq-list { display: flex; flex-direction: column; gap: 16px; }
.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 24px;
}
.faq-item h3 { font-size: 1rem; color: var(--color-primary-light); margin-bottom: 10px; }
.faq-item h3::before { content: "Q. "; font-weight: 700; }
.faq-item p::before { content: "A. "; color: var(--color-white); font-weight: 600; }

.article-summary {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 32px;
}

.author-box {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 48px;
}
.author-avatar {
  flex-shrink: 0;
  width: 56px; height: 56px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.3rem; color: white;
}
.author-name { font-weight: 700; color: var(--color-white); }
.author-title { font-size: 0.85rem; color: var(--color-primary-light); }

@media (max-width: 768px) {
  .triangle-grid { grid-template-columns: 1fr; }
  .triangle-arrow { transform: rotate(90deg); }
  .two-col { grid-template-columns: 1fr; }
  .result-item { grid-template-columns: 1fr; }
  .result-arrow { display: none; }
  .author-box { flex-direction: column; }
}