body {
  margin: 0;
  font-family: 'Lato', sans-serif;
  line-height: 1.6;
  color: #333;
  background: radial-gradient(circle, rgba(255, 87, 34, 0.1), transparent);
  overflow-x: hidden;
}
h1, h2, h3, h4, h5, h6 {
  font-family: 'Roboto', sans-serif;
  color: #fff;
}
.container {
  max-width: 1200px;
  margin: auto;
  padding: 0 20px;
}
.hero-section {
  background: linear-gradient(to bottom right, #003366, #663399);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 300vw;
  height: 300vw;
  background: radial-gradient(circle, rgba(255, 87, 34, 0.3), transparent);
  transform: translateX(-50%);
  animation: aurora-move 15s linear infinite;
}
@keyframes aurora-move {
  0% { transform: translateX(-50%) translateY(0); }
  100% { transform: translateX(-50%) translateY(-100%); }
}
.hero-title {
  font-size: 4rem;
  z-index: 2;
}
.sub-title {
  font-size: 1.5rem;
  margin-top: 10px;
  z-index: 2;
}
.card-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin: 40px 0;
}
.card {
  background: linear-gradient(to right, #ffffff, #f5f5f5);
  box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  padding: 20px;
  transition: transform 0.3s ease;
}
.card:hover {
  transform: translateY(-10px);
}
.feature-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 15px;
  background: linear-gradient(to bottom, #FF4136, #FF851B);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
  font-size: 2rem;
}
.button {
  background: linear-gradient(to right, #0074D9, #FF4136);
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.3s ease;
}
.button:hover {
  background: linear-gradient(to right, #FF4136, #0074D9);
}
.article-section {
  background: #fff;
  padding: 40px 20px;
  border-radius: 8px;
  box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.1);
  margin-bottom: 40px;
}
.article-section h2 {
  color: #003366;
  margin-bottom: 20px;
}
.article-section code {
  display: block;
  background: #f5f5f5;
  padding: 15px;
  border-radius: 5px;
  overflow-x: auto;
}
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  .card-container {
    grid-template-columns: 1fr;
  }
}