/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #1a202c;
  --secondary-color: #2d3748;
  --accent-color: #3182ce;
  --text-color: #2d3748;
  --text-light: #4a5568;
  --border-color: #e2e8f0;
  --bg-color: #ffffff;
  --bg-light: #f7fafc;
  --bg-accent: #ebf8ff;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans KR', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  background: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-content {
  padding: 1.5rem 0;
  text-align: center;
}

.site-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.site-tagline {
  color: var(--text-light);
  font-size: 1.1rem;
}

.main-nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  padding: 1rem 0;
  border-top: 1px solid var(--border-color);
}

.main-nav li {
  margin: 0 2rem;
}

.main-nav a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.main-nav a:hover {
  background-color: var(--bg-light);
  color: var(--accent-color);
}

/* Main Content */
.main-content {
  padding: 3rem 0;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3rem;
  align-items: start;
}

/* Article */
.featured-article {
  background: var(--bg-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.article-header {
  padding: 2rem 2rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.category {
  display: inline-block;
  background: var(--accent-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.article-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.article-meta {
  display: flex;
  gap: 1rem;
  color: var(--text-light);
  font-size: 0.9rem;
}

.article-content {
  padding: 2rem;
}

.lead {
  font-size: 1.25rem;
  color: var(--text-light);
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--bg-accent);
  border-radius: 8px;
  border-left: 4px solid var(--accent-color);
}

.article-content h2 {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin: 2rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
}

.article-content h3 {
  font-size: 1.3rem;
  color: var(--secondary-color);
  margin: 1.5rem 0 0.8rem;
}

.article-content p {
  margin-bottom: 1.5rem;
  color: var(--text-color);
}

.inline-link {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.inline-link:hover {
  border-bottom-color: var(--accent-color);
}

/* Image Gallery */
.image-gallery {
  margin: 2rem 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.gallery-grid img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.more-images {
  margin: 2rem 0;
}

.image-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.image-row img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.additional-images {
  margin: 2rem 0;
}

.image-grid-small {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
}

.image-grid-small img {
  width: 100%;
  height: 100px;
  object-fit: cover;
  border-radius: 6px;
  box-shadow: var(--shadow);
}

/* Quote */
.quote {
  background: var(--bg-light);
  border-left: 4px solid var(--accent-color);
  padding: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  font-size: 1.1rem;
  color: var(--text-light);
}

/* Equipment Specs */
.equipment-specs {
  background: var(--bg-light);
  padding: 2rem;
  border-radius: 8px;
  margin: 2rem 0;
}

.spec-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.spec-card {
  background: var(--bg-color);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.spec-card h4 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.spec-card ul {
  list-style: none;
}

.spec-card li {
  padding: 0.25rem 0;
  color: var(--text-color);
  font-size: 0.9rem;
}

/* Competitive Advantages */
.competitive-advantages {
  margin: 2rem 0;
}

.advantage-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.advantage-card {
  background: var(--bg-accent);
  padding: 1.5rem;
  border-radius: 8px;
  text-align: center;
  border: 1px solid var(--border-color);
}

.advantage-card h4 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.advantage-card p {
  color: var(--text-color);
  font-size: 0.9rem;
  margin: 0;
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: 120px;
}

.widget {
  background: var(--bg-color);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.widget h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.company-info h4 {
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
}

.company-details {
  list-style: none;
  margin: 1rem 0;
}

.company-details li {
  padding: 0.5rem 0;
  color: var(--text-light);
  font-size: 0.9rem;
}

.cta-button {
  display: inline-block;
  background: var(--accent-color);
  color: white;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 500;
  transition: background-color 0.2s ease;
  width: 100%;
  text-align: center;
}

.cta-button:hover {
  background: var(--primary-color);
}

.service-list {
  list-style: none;
}

.service-list li {
  padding: 0.5rem 0;
  color: var(--text-color);
  font-size: 0.9rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  background: var(--bg-light);
  color: var(--text-color);
  padding: 0.25rem 0.75rem;
  border-radius: 15px;
  font-size: 0.8rem;
  border: 1px solid var(--border-color);
}

/* Footer */
.site-footer {
  background: var(--primary-color);
  color: white;
  text-align: center;
  padding: 2rem 0;
  margin-top: 4rem;
}

.disclaimer {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-top: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .main-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .site-title {
    font-size: 2rem;
  }
  
  .article-title {
    font-size: 1.75rem;
  }
  
  .main-nav ul {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  
  .main-nav li {
    margin: 0.25rem;
  }
  
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  
  .image-row {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .image-grid-small {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .container {
    padding: 0 15px;
  }
  
  .article-content {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .spec-cards {
    grid-template-columns: 1fr;
  }
  
  .advantage-cards {
    grid-template-columns: 1fr;
  }
  
  .image-grid-small {
    grid-template-columns: 1fr;
  }
}