:root {
  --primary: rgba(255, 255, 255, 0.85);
  --secondary: rgba(240, 240, 240, 0.7);
  --accent: #00BFFF;
  --accent-alt: #32CD32;
  --text: #333;
  --glass: rgba(255, 255, 255, 0.15);
  --shadow: 0 8px 32px rgba(31, 38, 135, 0.2);
}

body {
  font-family: 'Roboto', sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
  margin: 0;
  padding: 0;
  min-height: 100%;
}

.header {
  background: var(--glass);
  backdrop-filter: blur(10px);
  padding: 2rem;
  text-align: center;
  margin-bottom: 3rem;
  box-shadow: var(--shadow);
  border-bottom: 1px solid rgba(255,255,255,0.3);
}

.header h1 {
  font-size: 2.5rem;
  margin: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-alt));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: 1px;
}

.notice {
  background: var(--accent);
  color: white;
  padding: 1rem;
  text-align: center;
  font-size: 0.9rem;
  margin-bottom: 2rem;
  border-radius: 0 0 15px 15px;
}

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

.article {
  background: var(--primary);
  border-radius: 20px;
  padding: 3rem;
  margin-bottom: 3rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(5px);
}

.article h2 {
  font-size: 2rem;
  color: var(--accent);
  margin-top: 0;
  position: relative;
  padding-bottom: 1rem;
}

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

.article h3 {
  font-size: 1.5rem;
  color: var(--accent-alt);
  margin: 2rem 0 1rem;
}

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

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

.image-card {
  background: white;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.image-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

.image-card img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 15px 15px 0 0;
}

.image-caption {
  padding: 1.5rem;
  background: var(--secondary);
}

pre {
  background: rgba(0,0,0,0.05);
  border-radius: 10px;
  padding: 1.5rem;
  overflow-x: auto;
  margin: 2rem 0;
  border-left: 4px solid var(--accent);
  font-size: 0.9rem;
  line-height: 1.5;
}

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

.nav-tabs {
  display: flex;
  margin-bottom: 2rem;
  border-bottom: 1px solid rgba(0,0,0,0.1);
}

.nav-tab {
  padding: 0.8rem 1.5rem;
  background: var(--secondary);
  margin-right: 0.5rem;
  border-radius: 5px 5px 0 0;
  cursor: pointer;
  transition: all 0.3s ease;
}

.nav-tab.active {
  background: var(--accent);
  color: white;
}

.nav-tab:hover {
  background: rgba(0,191,255,0.2);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.footer {
  text-align: center;
  padding: 2rem;
  background: var(--glass);
  backdrop-filter: blur(5px);
  margin-top: 3rem;
  border-radius: 20px 20px 0 0;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
  
  .article {
    padding: 2rem 1.5rem;
  }
  
  .image-grid {
    grid-template-columns: 1fr;
  }
}

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

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