:root {
  --primary: #004e92;
  --secondary: #000428;
  --accent: #ff7e5f;
  --text: #333;
  --light: #f5f5f5;
  --dark: #002f34;
  --success: #4CAF50;
  --warning: #ff9500;
}
body {
  font-family: 'Open Sans', sans-serif;
  line-height: 1.6;
  color: var(--text);
  margin: 0;
  padding: 0;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}
.header {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  padding: 2rem;
  text-align: center;
  margin-bottom: 2rem;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
  margin-bottom: 3rem;
}
.hero-text h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(45deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-image {
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}
.hero-image:hover {
  transform: scale(1.02);
}
.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}
article {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  margin-bottom: 2rem;
}
article h2 {
  color: var(--primary);
  font-size: 1.8rem;
  margin-top: 2rem;
  position: relative;
  padding-bottom: 0.5rem;
}
article h2:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--primary));
}
article h3 {
  color: var(--secondary);
  font-size: 1.4rem;
  margin-top: 1.5rem;
}
article p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}
article pre {
  background: #f8f8f8;
  padding: 1rem;
  border-radius: 5px;
  overflow-x: auto;
  margin: 1.5rem 0;
  border-left: 4px solid var(--accent);
}
article code {
  font-family: 'Courier New', monospace;
  color: #333;
}
article table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}
article table th, article table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid #ddd;
}
article table th {
  background-color: var(--primary);
  color: white;
}
article table tr:nth-child(even) {
  background-color: #f2f2f2;
}
article ol, article ul {
  margin: 1.5rem 0;
  padding-left: 2rem;
}
article li {
  margin-bottom: 0.5rem;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}
.card {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 15px rgba(0,0,0,0.2);
}
.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}
.card-content {
  padding: 1.5rem;
}
.footer {
  background: var(--dark);
  color: white;
  padding: 2rem;
  text-align: center;
  margin-top: 2rem;
}
.notice {
  background: var(--warning);
  color: white;
  padding: 1rem;
  text-align: center;
  margin-bottom: 2rem;
  border-radius: 5px;
  font-weight: bold;
}
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
  }
  article {
    padding: 1rem;
  }
}