:root {
  --primary: #7c3aed;
  --primary-hover: #6d28d9;
  --bg-color: #f8fafc;
  --text-main: #334155;
  --text-dark: #0f172a;
  --text-light: #64748b;
  --white: #ffffff;
  --border: #e2e8f0;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  font-size: 16px;
}
a {
  text-decoration: none;
  color: var(--primary);
  transition: color 0.3s ease;
}
a:hover {
  color: var(--primary-hover);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.navbar {
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-dark);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: var(--white);
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  text-align: center;
}
.btn:hover {
  background: var(--primary-hover);
  color: var(--white);
  transform: translateY(-1px);
}
.btn-sm {
  padding: 8px 16px;
  font-size: 0.9rem;
}
.btn-lg {
  padding: 14px 28px;
  font-size: 1.1rem;
}
.hero {
  background: linear-gradient(135deg, #1e1b4b 0%, var(--primary) 100%);
  color: var(--white);
  padding: 0 0 4rem 0;
}
.breadcrumbs {
  padding: 20px 0 40px;
}
.breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
}
.breadcrumbs li {
  display: flex;
  align-items: center;
}
.breadcrumbs li:not(:last-child)::after {
  content: '/';
  margin-left: 8px;
  color: rgba(255,255,255,0.5);
}
.breadcrumbs a {
  color: var(--white);
  opacity: 0.9;
}
.breadcrumbs a:hover {
  opacity: 1;
}
.hero-main {
  max-width: 800px;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--white);
}
.hero-subtitle {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  line-height: 1.7;
}
.article-section {
  padding: 4rem 0;
}
.content {
  background: var(--white);
  padding: 40px;
  border-radius: 16px;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
}
.content h1 {
  font-size: 2.25rem;
  color: var(--text-dark);
  margin-bottom: 2rem;
  line-height: 1.3;
}
.content h2 {
  font-size: 1.75rem;
  color: var(--text-dark);
  margin: 2.5rem 0 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border);
}
.content h3 {
  font-size: 1.3rem;
  color: var(--text-dark);
  margin: 2rem 0 1rem;
}
.content p {
  margin-bottom: 1.25rem;
}
.content ul,
.content ol {
  margin: 1.5rem 0 1.5rem 2rem;
}
.content li {
  margin-bottom: 0.5rem;
}
.content strong {
  color: var(--text-dark);
}
.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  display: block;
  overflow-x: auto;
  white-space: nowrap;
}
.content th,
.content td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  text-align: left;
}
.content th {
  background: var(--bg-color);
  font-weight: 600;
}
.faq-section {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 2px dashed var(--border);
}
.faq-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1.5rem;
}
.info-grid-section {
  padding: 0 0 4rem;
}
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.info-card {
  background: var(--white);
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
  border: 1px solid var(--border);
}
.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.author-name {
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 4px;
}
.author-role {
  font-size: 0.9rem;
  color: var(--text-light);
}
.about-text p,
.contact-text p {
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}
.about-text p:last-child,
.contact-text p:last-child {
  margin-bottom: 0;
}
.sources-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.sources-list li {
  font-size: 0.9rem;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.sources-list li:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.footer {
  background: var(--text-dark);
  color: var(--text-light);
  padding: 2rem 0;
  text-align: center;
}
.footer-text {
  font-size: 0.9rem;
}
@media (max-width: 768px) {
  .navbar-inner {
    flex-direction: column;
    height: auto;
    padding: 15px 0;
    gap: 15px;
  }
  .btn-sm {
    width: 100%;
  }
  .hero {
    padding-bottom: 3rem;
  }
  .breadcrumbs {
    padding: 15px 0 20px;
  }
  .article-section {
    padding: 2rem 0;
  }
  .content {
    padding: 20px;
  }
  .content h1 {
    font-size: 1.75rem;
  }
  .content h2 {
    font-size: 1.4rem;
  }
  .content h3 {
    font-size: 1.2rem;
  }
  .btn-lg {
    width: 100%;
  }
}