:root {
  --primary: #1e3c72;
  --secondary: #6a11cb;
  --accent: #ff6b6b;
  --text: #333;
  --light: rgba(255,255,255,0.9);
  --dark: rgba(0,0,0,0.1);
}

body {
  margin: 0;
  padding: 80px 0 0;
  font-family: 'Roboto', sans-serif;
  color: var(--text);
  background: linear-gradient(-45deg, var(--primary), #2a5298, var(--secondary), #2575fc);
  background-size: 400% 400%;
  animation: gradientAnimation 15s ease infinite;
  line-height: 1.6;
}

@keyframes gradientAnimation {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(30, 60, 114, 0.9);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 5%;
  z-index: 1000;
  backdrop-filter: blur(5px);
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.nav-links {
  display: flex;
  gap: 20px;
}

.navbar a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  padding: 5px 10px;
  border-radius: 4px;
}

.navbar a:hover {
  color: var(--accent);
  transform: translateY(-2px);
}

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

.header {
  text-align: center;
  padding: 60px 20px;
  color: white;
}

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

.header p {
  font-size: 1.2rem;
  max-width: 800px;
  margin: 0 auto;
}

.notice {
  background: rgba(255,255,255,0.2);
  padding: 15px;
  border-radius: 8px;
  margin: 30px auto;
  text-align: center;
  max-width: 800px;
  color: white;
  font-weight: bold;
  backdrop-filter: blur(5px);
}

article {
  background: var(--light);
  border-radius: 12px;
  padding: 40px;
  margin: 40px 0;
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

article h2 {
  color: var(--primary);
  font-size: 2rem;
  margin-bottom: 30px;
  position: relative;
  padding-bottom: 10px;
}

article h2:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

article h3 {
  color: var(--secondary);
  font-size: 1.5rem;
  margin: 30px 0 15px;
}

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

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

.img-card {
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transition: all 0.3s ease;
}

.img-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.img-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

pre {
  background: #2d3748;
  color: #f8f8f2;
  padding: 20px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 20px 0;
  font-family: 'Courier New', monospace;
  box-shadow: inset 0 0 10px rgba(0,0,0,0.5);
}

code {
  font-family: 'Courier New', monospace;
  background: rgba(0,0,0,0.05);
  padding: 2px 4px;
  border-radius: 4px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  background: white;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

th, td {
  padding: 12px 15px;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

th {
  background: var(--primary);
  color: white;
}

tr:hover {
  background: rgba(0,0,0,0.02);
}

.button-cta {
  background: linear-gradient(45deg, var(--accent), #f06595);
  border: none;
  color: white;
  padding: 15px 30px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  border-radius: 50px;
  transition: all 0.3s ease;
  margin: 10px 0;
  box-shadow: 0 4px 15px rgba(255,107,107,0.3);
}

.button-cta:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(255,107,107,0.4);
  background: linear-gradient(45deg, #f06595, var(--accent));
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .navbar {
    padding: 15px 20px;
  }
  
  article {
    padding: 30px 20px;
  }
  
  .header h1 {
    font-size: 2rem;
  }
}