:root {
  --primary-dark: #1E3A8A;
  --primary-light: #6366F1;
  --accent: #FFAB00;
  --dark-bg: #2D3748;
  --text-light: #FFFFFF;
  --text-dark: #1A202C;
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 8px 12px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 12px 20px rgba(0, 0, 0, 0.3);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  color: var(--text-light);
  font-family: 'Montserrat', 'Arial', sans-serif;
  line-height: 1.6;
  min-height: 100%;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 20px 40px;
}

.header-notice {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: 10px 0;
  text-align: center;
  z-index: 1000;
  font-size: 14px;
  color: var(--accent);
  border-bottom: 1px solid rgba(255, 171, 0, 0.2);
}

.navbar {
  position: fixed;
  top: 40px;
  left: 0;
  width: 100%;
  background: rgba(30, 58, 138, 0.9);
  backdrop-filter: blur(5px);
  display: flex;
  justify-content: center;
  padding: 15px 0;
  z-index: 999;
  box-shadow: var(--shadow-sm);
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-link {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 500;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--accent);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

article {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

h2 {
  font-size: 32px;
  margin-bottom: 30px;
  color: var(--accent);
  position: relative;
  padding-bottom: 15px;
}

h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

h3 {
  font-size: 24px;
  margin: 25px 0 15px;
  color: var(--text-light);
}

p {
  margin-bottom: 20px;
  font-size: 16px;
}

pre {
  background: var(--dark-bg);
  border-radius: var(--radius-md);
  padding: 20px;
  margin: 20px 0;
  overflow: auto;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--accent);
}

code {
  font-family: 'Courier New', monospace;
  color: var(--accent);
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin: 30px 0;
}

.image-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  aspect-ratio: 1/1;
}

.image-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.image-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

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

.image-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
}

.footer {
  text-align: center;
  padding: 30px 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

@media (max-width: 768px) {
  .container {
    padding: 80px 15px 30px;
  }
  
  article {
    padding: 30px;
  }
  
  h2 {
    font-size: 28px;
  }
  
  h3 {
    font-size: 22px;
  }
  
  .image-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
}

@media (max-width: 480px) {
  .container {
    padding: 70px 10px 20px;
  }
  
  article {
    padding: 20px;
  }
  
  h2 {
    font-size: 24px;
  }
  
  h3 {
    font-size: 20px;
  }
  
  .nav-links {
    gap: 15px;
  }
}