:root {
  --primary: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  --secondary: rgba(32, 58, 67, 0.8);
  --accent: linear-gradient(45deg, #29ABE2, #00FFB0);
  --text: #f8f9fa;
  --card-bg: rgba(255, 255, 255, 0.1);
}

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

body {
  font-family: 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--primary);
  position: relative;
  overflow-x: hidden;
}

.aurora-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.7;
}

.aurora-layer {
  position: absolute;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(138, 43, 226, 0.1) 0%, transparent 70%);
  animation: drift 30s linear infinite;
}

@keyframes drift {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

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

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

.header h1 {
  font-size: 3.5rem;
  background: linear-gradient(90deg, #29ABE2, #00FFB0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 20px;
  font-weight: 700;
}

.header p {
  font-size: 1.2rem;
  max-width: 800px;
  margin: 0 auto;
  color: rgba(255, 255, 255, 0.8);
}

.note {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: rgba(0, 0, 0, 0.5);
  padding: 10px 20px;
  border-radius: 30px;
  font-size: 0.9rem;
  z-index: 100;
}

article {
  background: rgba(15, 32, 39, 0.7);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  margin-bottom: 60px;
}

article h2 {
  font-size: 2.2rem;
  margin: 30px 0 20px;
  background: linear-gradient(90deg, #29ABE2, #00FFB0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

article h3 {
  font-size: 1.8rem;
  margin: 25px 0 15px;
  color: #00FFB0;
}

article p {
  font-size: 1.1rem;
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.9);
}

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

.image-card {
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.image-card img {
  width: 100%;
  height: auto;
  display: block;
}

pre {
  background: rgba(0, 0, 0, 0.3);
  border-radius: 10px;
  padding: 20px;
  margin: 20px 0;
  overflow-x: auto;
  border-left: 4px solid #00FFB0;
}

code {
  font-family: 'Courier New', monospace;
  color: #00FFB0;
}

ol, ul {
  padding-left: 30px;
  margin-bottom: 20px;
}

li {
  margin-bottom: 10px;
}

.nav-tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.nav-tabs a {
  color: white;
  text-decoration: none;
  padding: 10px 20px;
  margin: 0 10px;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.nav-tabs a:hover {
  background: var(--accent);
  color: #0f2027;
}

@media (max-width: 768px) {
  .header h1 {
    font-size: 2.5rem;
  }
  
  article {
    padding: 30px 20px;
  }
  
  .image-grid {
    grid-template-columns: 1fr;
  }
  
  .nav-tabs a {
    margin: 5px;
    padding: 8px 15px;
  }
}