:root {
  --primary-bg: linear-gradient(135deg, rgba(0, 0, 50, 0.9), rgba(10, 10, 10, 0.9));
  --secondary-bg: rgba(0, 0, 50, 0.8);
  --accent-color: #00c6ff;
  --accent-secondary: #0072ff;
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --card-bg: rgba(255, 255, 255, 0.1);
  --highlight: #00ffaa;
}

body {
  background: var(--primary-bg);
  color: var(--text-primary);
  font-family: 'Montserrat', sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  min-height: 100%;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 20px 40px;
}

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

.header::after {
  content: "";
  display: block;
  width: 150px;
  height: 3px;
  background: var(--accent-color);
  margin: 20px auto;
  border-radius: 3px;
}

.notice {
  background: rgba(0, 198, 255, 0.1);
  border-left: 4px solid var(--accent-color);
  padding: 15px;
  margin-bottom: 40px;
  border-radius: 0 5px 5px 0;
  font-size: 16px;
}

.article-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 50px;
}

.article-section {
  background: rgba(0, 0, 50, 0.5);
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 198, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.article-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent 65%, rgba(0, 198, 255, 0.05));
  pointer-events: none;
}

h2 {
  color: var(--accent-color);
  font-size: 28px;
  margin-top: 0;
  position: relative;
  padding-bottom: 15px;
}

h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 2px;
  background: var(--highlight);
}

h3 {
  color: var(--text-primary);
  font-size: 22px;
  margin: 25px 0 15px;
}

p {
  color: var(--text-secondary);
  font-size: 17px;
  margin-bottom: 20px;
}

.code-container {
  background: rgba(0, 0, 30, 0.7);
  border-radius: 10px;
  padding: 20px;
  margin: 25px 0;
  border-left: 4px solid var(--accent-color);
  overflow-x: auto;
}

pre {
  margin: 0;
  font-family: 'Courier New', monospace;
  font-size: 15px;
  color: #00ffaa;
  white-space: pre-wrap;
}

code {
  font-family: 'Courier New', monospace;
  background: rgba(0, 198, 255, 0.1);
  padding: 2px 5px;
  border-radius: 3px;
  color: #00ffaa;
}

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

.gallery-image {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 320px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-image:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 198, 255, 0.2);
}

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

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

.nav-tab {
  padding: 10px 20px;
  background: rgba(0, 198, 255, 0.1);
  border-radius: 30px;
  color: var(--accent-color);
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid rgba(0, 198, 255, 0.3);
  font-size: 15px;
}

.nav-tab:hover {
  background: rgba(0, 198, 255, 0.2);
  color: var(--text-primary);
}

.nav-tab.active {
  background: var(--accent-color);
  color: #000;
  font-weight: bold;
}

@media (max-width: 768px) {
  .container {
    padding: 60px 15px 30px;
  }
  
  h2 {
    font-size: 24px;
  }
  
  h3 {
    font-size: 20px;
  }
  
  .article-section {
    padding: 20px;
  }
  
  .image-gallery {
    grid-template-columns: 1fr;
  }
}

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

.floating {
  animation: float 4s ease-in-out infinite;
}

.decorator {
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 198, 255, 0.1) 0%, transparent 70%);
  filter: blur(20px);
  z-index: -1;
}

.decorator-1 {
  top: 10%;
  left: -100px;
}

.decorator-2 {
  bottom: 15%;
  right: -80px;
}