.article-header {
  max-width: 850px;
  margin: 0 auto;
  padding: 60px 0 30px;
  text-align: left;
}
.article-header h1 {
  font-size: clamp(2.2rem, 4vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  color: var(--primary);
}
.article-meta {
  font-size: 0.9rem;
  color: var(--text-light);
  border-left: 3px solid var(--accent);
  padding-left: 12px;
  margin-top: 8px;
}
.article-content {
  max-width: 780px;
  margin: 0 auto;
  padding: 20px 0 60px;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text);
}
.article-content .lead {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--primary);
  margin-bottom: 2rem;
  border-left: 4px solid var(--accent);
  padding-left: 1.2rem;
}
.article-content h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
  margin: 2.5rem 0 1rem;
  letter-spacing: -0.02em;
}
.article-content h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--primary);
  margin: 1.8rem 0 0.8rem;
}
.article-content p {
  margin-bottom: 1.2rem;
}
.article-content ul,
.article-content ol {
  margin: 1rem 0 1.5rem 1.8rem;
}
.article-content li {
  margin-bottom: 0.5rem;
}
.article-content strong {
  color: var(--primary);
  font-weight: 700;
}
.highlight-box {
  background: rgba(0, 169, 204, 0.08);
  border-left: 4px solid var(--accent);
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 16px;
  font-weight: 500;
  color: var(--primary);
  font-size: 1.1rem;
}
.article-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content a:hover {
  color: var(--primary);
}
.cta-section {
  background: linear-gradient(135deg, rgba(25, 61, 113, 0.03), rgba(0, 169, 204, 0.06));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 70px 0;
  text-align: center;
}
.cta-section h3 {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 16px;
}
.cta-section p {
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 30px;
  font-size: 1.1rem;
}
.cta-section .btn-primary {
  background: var(--primary);
  color: white;
  padding: 14px 28px;
}
.cta-section .btn-primary:hover {
  background: var(--primary-light);
}
@media (max-width: 640px) {
  .article-header {
    padding: 40px 20px 20px;
  }
  .article-content {
    padding: 0 20px 40px;
  }
  .cta-section {
    padding: 50px 20px;
  }
  .cta-section h3 {
    font-size: 1.6rem;
  }
}