:root {
  --primary: #964B00;
  --secondary: #1E90FF;
  --accent: #FFD700;
  --bg: #F5F5DC;
  --text: #333;
  --border: #808000;
}

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

body {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding: 0;
  margin: 0;
  overflow-x: hidden;
}

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

.header {
  text-align: center;
  padding: 40px 0;
  background: linear-gradient(135deg, var(--primary) 0%, #5a2c00 100%);
  color: white;
  margin-bottom: 40px;
  border-radius: 0 0 20px 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.header h1 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.notice {
  background: rgba(255,255,255,0.2);
  padding: 15px;
  border-radius: 8px;
  margin: 20px auto;
  max-width: 800px;
  text-align: center;
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255,255,255,0.3);
}

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

article {
  background: white;
  padding: 40px;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  border: 2px solid var(--border);
}

article h2 {
  color: var(--primary);
  font-size: 2rem;
  margin-bottom: 30px;
  position: relative;
  padding-bottom: 15px;
}

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

article h3 {
  color: var(--secondary);
  font-size: 1.5rem;
  margin: 30px 0 20px;
}

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

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

.image-grid img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.image-grid img:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

pre {
  background: #f8f8f8;
  padding: 20px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 20px 0;
  border-left: 4px solid var(--secondary);
  font-family: 'Courier New', monospace;
}

code {
  font-family: 'Courier New', monospace;
  background: #f0f0f0;
  padding: 2px 5px;
  border-radius: 3px;
}

.nav {
  display: flex;
  justify-content: center;
  margin: 40px 0;
  flex-wrap: wrap;
  gap: 10px;
}

.nav a {
  padding: 10px 20px;
  background: var(--secondary);
  color: white;
  text-decoration: none;
  border-radius: 5px;
  transition: all 0.3s ease;
  font-weight: bold;
}

.nav a:hover {
  background: var(--primary);
  transform: translateY(-2px);
}

.footer {
  text-align: center;
  padding: 30px;
  margin-top: 50px;
  background: linear-gradient(135deg, var(--primary) 0%, #5a2c00 100%);
  color: white;
  border-radius: 20px 20px 0 0;
}

@media (max-width: 768px) {
  .header h1 {
    font-size: 2rem;
  }
  
  article {
    padding: 25px;
  }
  
  .image-grid {
    grid-template-columns: 1fr;
  }
}

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

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