:root {
  --main-bg: #f5e9d8;
  --primary-color: #87c48b;
  --secondary-color: #60a3bc;
  --accent-color: #f8b24d;
  --text-color: #333333;
  --highlight-color: #e7a13d;
}

body {
  margin: 0;
  font-family: 'Helvetica', sans-serif;
  background: var(--main-bg);
  color: var(--text-color);
  line-height: 1.6;
}

header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  padding: 2rem 1rem;
  text-align: center;
  position: relative;
}

header h1 {
  font-size: 2.5rem;
  color: white;
  margin: 0;
}

.container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  padding: 2rem;
  max-width: 1400px;
  margin: auto;
}

@media (max-width: 768px) {
  .container {
    grid-template-columns: 1fr;
  }
}

.section {
  background: white;
  border-radius: 15px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  overflow: hidden;
  transition: transform 0.3s ease;
}

.section:hover {
  transform: translateY(-5px);
}

.section-header {
  background: var(--primary-color);
  color: white;
  padding: 1.5rem;
  font-size: 1.5rem;
}

.article-container {
  padding: 2rem;
  font-family: 'Georgia', serif;
}

pre {
  background: #f9f9f9;
  padding: 1rem;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 0.9rem;
  border-left: 5px solid var(--accent-color);
}

code {
  color: #d45a3c;
  font-family: 'Courier New', monospace;
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  padding: 1rem;
}

.image-item {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
}

.image-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
}

.image-item:hover img {
  transform: scale(1.1);
}

.data-list {
  list-style: none;
  padding: 0;
  counter-reset: item;
}

.data-list li {
  padding: 1rem;
  margin: 0.5rem 0;
  background: #fff;
  border-left: 5px solid var(--secondary-color);
  position: relative;
  counter-increment: item;
}

.data-list li::before {
  content: counter(item);
  position: absolute;
  left: -30px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--accent-color);
  color: white;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  text-align: center;
  line-height: 25px;
  font-weight: bold;
}

footer {
  background: var(--secondary-color);
  color: white;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
}

.reference-note {
  background: #fff3cd;
  color: #856404;
  padding: 1rem;
  border-radius: 10px;
  margin: 2rem auto;
  max-width: 800px;
  text-align: center;
}