:root {
  --primary: #1E2A38;
  --secondary: #00CFFF;
  --accent: #FFA500;
  --text: #F0F4F8;
  --card-bg: rgba(255, 255, 255, 0.1);
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Montserrat', sans-serif;
  background: linear-gradient(135deg, var(--primary), #0A192F);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 20px;
}

.header {
  text-align: center;
  margin-bottom: 60px;
  position: relative;
}

.header h1 {
  font-size: 3rem;
  margin: 0;
  background: linear-gradient(90deg, var(--secondary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: relative;
  display: inline-block;
}

.header h1::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--secondary), var(--accent));
  border-radius: 3px;
}

.notice {
  background: rgba(0, 0, 0, 0.3);
  padding: 15px;
  border-radius: 8px;
  text-align: center;
  margin: 30px auto;
  max-width: 800px;
  border: 1px solid var(--secondary);
  box-shadow: 0 0 20px rgba(0, 207, 255, 0.2);
}

.article-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

article {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

article h2 {
  color: var(--secondary);
  font-size: 2rem;
  margin-top: 0;
  position: relative;
  padding-bottom: 15px;
}

article h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, var(--secondary), transparent);
}

article h3 {
  color: var(--accent);
  font-size: 1.5rem;
  margin: 30px 0 15px;
}

article p {
  font-size: 1.1rem;
  margin-bottom: 20px;
}

pre {
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  padding: 20px;
  overflow: auto;
  border-left: 3px solid var(--secondary);
  margin: 20px 0;
}

code {
  font-family: 'Fira Code', monospace;
  color: var(--secondary);
}

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

.image-grid img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.image-grid img:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 207, 255, 0.3);
}

.nav-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.nav-tabs a {
  padding: 10px 20px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 30px;
  text-decoration: none;
  color: var(--text);
  transition: all 0.3s;
  border: 1px solid var(--secondary);
}

.nav-tabs a:hover {
  background: var(--secondary);
  color: var(--primary);
}

@media (max-width: 768px) {
  .container {
    padding: 40px 15px;
  }
  
  .header h1 {
    font-size: 2rem;
  }
  
  article {
    padding: 25px;
  }
  
  article h2 {
    font-size: 1.5rem;
  }
  
  article h3 {
    font-size: 1.2rem;
  }
}

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

.decorative-element {
  position: absolute;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0,207,255,0.1) 0%, rgba(0,207,255,0) 70%);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
  z-index: -1;
}

.decorative-element:nth-child(1) {
  top: 10%;
  left: 5%;
}

.decorative-element:nth-child(2) {
  bottom: 15%;
  right: 5%;
  animation-delay: 1s;
}

.decorative-element:nth-child(3) {
  top: 40%;
  right: 10%;
  animation-delay: 2s;
}