.kienviet-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  margin-bottom: 0;
}

.kienviet-hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(29, 78, 216, 0.1) 100%);
  z-index: 1;
}

.kienviet-hero-background::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

.kienviet-hero-background::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite reverse;
}

.kienviet-hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 120px 0 80px;
}

.kienviet-hero-text {
  max-width: 600px;
}

.kienviet-hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.kienviet-hero-description {
  font-size: 1.25rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.kienviet-hero-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.kienviet-hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.kienviet-hero-image {
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
  transition: var(--transition);
}

.kienviet-hero-image:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg) scale(1.02);
}

.kienviet-services-overview {
  background: var(--background-primary);
  position: relative;
}

.kienviet-section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 80px;
  padding: 0 20px;
}

.kienviet-section-header h2 {
  margin-bottom: 16px;
}

.kienviet-section-header p {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.kienviet-services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.kienviet-service-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 48px 36px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.kienviet-service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: var(--transition);
}

.kienviet-service-card:hover::before {
  transform: scaleX(1);
}

.kienviet-service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.kienviet-service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  background: var(--primary-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
  transition: var(--transition);
}

.kienviet-service-card:hover .kienviet-service-icon {
  transform: scale(1.1) rotate(5deg);
}

.kienviet-service-card h3 {
  margin-bottom: 16px;
  color: var(--text-primary);
}

.kienviet-service-card p {
  margin-bottom: 24px;
  color: var(--text-secondary);
}

.kienviet-service-link {
  color: var(--primary-color);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.kienviet-service-link:hover {
  gap: 12px;
}

.kienviet-featured-projects {
  background: var(--background-secondary);
  position: relative;
}

.kienviet-projects-showcase {
  margin-bottom: 60px;
}

.kienviet-project-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-bottom: 80px;
  background: white;
  border-radius: var(--border-radius-lg);
  padding: 80px 60px;
  box-shadow: var(--shadow-lg);
}

.kienviet-projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.kienviet-project-card {
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.kienviet-project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.kienviet-project-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: var(--transition);
}

.kienviet-project-card:hover .kienviet-project-image {
  transform: scale(1.05);
}

.kienviet-project-content {
  padding: 40px 32px;
}

.kienviet-project-content h3,
.kienviet-project-content h4 {
  margin-bottom: 12px;
  color: var(--text-primary);
}

.kienviet-project-content p {
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.kienviet-project-stats {
  display: flex;
  gap: 32px;
}

.kienviet-stat {
  text-align: center;
}

.kienviet-stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-color);
  line-height: 1;
}

.kienviet-stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kienviet-company-advantages {
  background: white;
  position: relative;
}

.kienviet-advantages-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.kienviet-advantages-text h2 {
  margin-bottom: 20px;
}

.kienviet-advantages-text > p {
  margin-bottom: 40px;
  font-size: 1.125rem;
}

.kienviet-advantages-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.kienviet-advantage-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.kienviet-advantage-icon {
  width: 60px;
  height: 60px;
  background: var(--primary-gradient);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  flex-shrink: 0;
}

.kienviet-advantage-content h4 {
  margin-bottom: 8px;
  color: var(--text-primary);
}

.kienviet-advantage-content p {
  color: var(--text-secondary);
  margin: 0;
}

.kienviet-advantages-image {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.kienviet-latest-news {
  background: var(--background-secondary);
}

.kienviet-news-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
}

.kienviet-news-card {
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.kienviet-news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.kienviet-news-featured {
  grid-row: span 2;
}

.kienviet-news-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition);
}

.kienviet-news-featured .kienviet-news-image {
  height: 300px;
}

.kienviet-news-card:hover .kienviet-news-image {
  transform: scale(1.05);
}

.kienviet-news-content {
  padding: 32px 28px;
}

.kienviet-news-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
}

.kienviet-news-date {
  color: var(--text-light);
  font-size: 0.875rem;
}

.kienviet-news-category {
  background: var(--primary-color);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.kienviet-news-content h3,
.kienviet-news-content h4 {
  margin-bottom: 12px;
  color: var(--text-primary);
  line-height: 1.3;
}

.kienviet-news-content p {
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}

.kienviet-social-links {
  display: flex;
  gap: 16px;
  margin-top: 20px;
}

.kienviet-social-links a {
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.kienviet-social-links a:hover {
  background: var(--accent-color);
  transform: translateY(-2px);
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

@media (max-width: 1024px) {
  .kienviet-hero-content {
    grid-template-columns: 1fr;
    gap: 60px;
    text-align: center;
    padding: 100px 0 60px;
  }
  
  .kienviet-hero-title {
    font-size: 2.5rem;
  }
  
  .kienviet-project-featured {
    grid-template-columns: 1fr;
    gap: 50px;
    padding: 60px 40px;
  }
  
  .kienviet-advantages-content {
    grid-template-columns: 1fr;
    gap: 60px;
  }
  
  .kienviet-news-grid {
    grid-template-columns: 1fr;
  }
  
  .kienviet-news-featured {
    grid-row: span 1;
  }
}

@media (max-width: 768px) {
  .kienviet-hero-content {
    padding: 80px 0 40px;
  }
  
  .kienviet-hero-title {
    font-size: 2rem;
  }
  
  .kienviet-hero-buttons {
    justify-content: center;
  }
  
  .kienviet-services-grid {
    grid-template-columns: 1fr;
  }
  
  .kienviet-service-card {
    padding: 36px 28px;
  }
  
  .kienviet-projects-grid {
    grid-template-columns: 1fr;
  }
  
  .kienviet-project-featured {
    padding: 40px 30px;
  }
  
  .kienviet-project-stats {
    justify-content: center;
  }
  
  .kienviet-advantage-item {
    text-align: center;
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .kienviet-hero-content {
    gap: 40px;
  }
  
  .kienviet-hero-title {
    font-size: 1.75rem;
  }
  
  .kienviet-hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .kienviet-project-featured {
    padding: 20px;
  }
}

section.kienviet-section {
  margin: 0;
}

section.kienviet-section + section.kienviet-section {
  margin-top: 0;
}

.kienviet-services-overview.kienviet-section {
  padding-top: 120px;
  padding-bottom: 120px;
}

.kienviet-featured-projects.kienviet-section {
  padding-top: 120px;
  padding-bottom: 120px;
}

.kienviet-company-advantages.kienviet-section {
  padding-top: 120px;
  padding-bottom: 120px;
}

.kienviet-latest-news.kienviet-section {
  padding-top: 120px;
  padding-bottom: 120px;
}

@media (max-width: 1024px) {
  .kienviet-services-overview.kienviet-section,
  .kienviet-featured-projects.kienviet-section,
  .kienviet-company-advantages.kienviet-section,
  .kienviet-latest-news.kienviet-section {
    padding-top: 100px;
    padding-bottom: 100px;
  }
}

@media (max-width: 768px) {
  .kienviet-services-overview.kienviet-section,
  .kienviet-featured-projects.kienviet-section,
  .kienviet-company-advantages.kienviet-section,
  .kienviet-latest-news.kienviet-section {
    padding-top: 80px;
    padding-bottom: 80px;
  }
}

@media (max-width: 480px) {
  .kienviet-services-overview.kienviet-section,
  .kienviet-featured-projects.kienviet-section,
  .kienviet-company-advantages.kienviet-section,
  .kienviet-latest-news.kienviet-section {
    padding-top: 60px;
    padding-bottom: 60px;
  }
}