:root {
  --primary: linear-gradient(135deg, #1e3c72, #2a5298);
  --secondary: #2c3e50;
  --accent: #e67e22;
  --text: #ecf0f1;
  --highlight: #3498db;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Roboto', sans-serif;
}

body {
  background: var(--primary);
  color: var(--text);
  line-height: 1.6;
  padding-top: 80px;
}

.header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(44, 62, 80, 0.95);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
}

.header h1 {
  font-size: 1.8rem;
  background: linear-gradient(90deg, #4b6cb7, #b06ab3);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 2px 10px rgba(75, 108, 183, 0.3);
}

.notice {
  background: rgba(255, 255, 255, 0.1);
  padding: 1rem;
  border-radius: 8px;
  margin: 2rem auto;
  max-width: 1200px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(5px);
}

.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.article-container {
  background: rgba(44, 62, 80, 0.8);
  border-radius: 15px;
  padding: 2.5rem;
  margin-bottom: 3rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.article-container h2 {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(90deg, #4b6cb7, #b06ab3);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid rgba(75, 108, 183, 0.5);
}

.article-container h3 {
  font-size: 1.6rem;
  margin: 1.8rem 0 1rem;
  color: #bdc3c7;
}

.article-container p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

pre {
  background: rgba(30, 60, 114, 0.5);
  border-radius: 10px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  border: 1px solid rgba(75, 108, 183, 0.3);
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.2);
}

code {
  font-family: 'Courier New', monospace;
  color: #f8f8f2;
  font-size: 0.95rem;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.gallery img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s, box-shadow 0.3s;
}

.gallery img:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.card {
  background: rgba(44, 62, 80, 0.8);
  border-radius: 15px;
  padding: 1.5rem;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.card h4 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: #bdc3c7;
}

.card p {
  margin-bottom: 0.8rem;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-size: 1rem;
  transition: color 0.3s;
  position: relative;
  padding: 0.5rem 0;
}

.nav-links a:hover {
  color: var(--highlight);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--highlight);
  transition: width 0.3s;
}

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

@media (max-width: 768px) {
  .header {
    flex-direction: column;
    padding: 1rem;
  }
  
  .header h1 {
    margin-bottom: 1rem;
  }
  
  .nav-links {
    width: 100%;
    justify-content: space-around;
  }
  
  .article-container {
    padding: 1.5rem;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery {
    grid-template-columns: 1fr;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.floating {
  animation: float 3s ease-in-out infinite;
}