body {
  margin: 0;
  font-family: 'Roboto', sans-serif;
  background: linear-gradient(to bottom, #00001F, #0D0D0D);
  color: #E0E0E0;
  line-height: 1.6;
}
.container {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}
header {
  grid-column: span 12;
  text-align: center;
  padding: 40px 0;
  background: linear-gradient(to right, #00008B, #FFA500);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 2rem;
  font-weight: bold;
}
.module {
  grid-column: span 6;
  background: rgba(0, 0, 0, 0.7);
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 4px 10px rgba(0, 255, 255, 0.3);
  transition: transform 0.3s ease;
}
.module:hover {
  transform: translateY(-10px);
}
img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  object-fit: cover;
}
pre {
  background: #1E1E1E;
  padding: 15px;
  border-radius: 5px;
  overflow-x: auto;
  font-family: 'Roboto Mono', monospace;
  color: #00FFFF;
}
h2 {
  font-weight: bold;
  color: #FFA500;
  margin-top: 30px;
}
p {
  font-size: 1rem;
  letter-spacing: 0.5px;
}
a {
  color: #00FFFF;
  text-decoration: none;
  transition: color 0.3s ease;
}
a:hover {
  color: #FFA500;
}
@media (max-width: 768px) {
  .module {
    grid-column: span 12;
  }
  header {
    font-size: 1.5rem;
  }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.section {
  animation: fadeIn 1s ease-in-out;
}
.icon-lock {
  width: 32px;
  height: 32px;
  background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center;
  background-size: cover;
}