:root {
  --primary-green: #81C784;
  --primary-blue: #2196F3;
  --neutral-gray: #F5F5F5;
  --accent-orange: #FFA726;
  --dark-text: #333;
  --light-text: #fff;
}

body {
  font-family: 'Roboto', sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--neutral-gray);
  color: var(--dark-text);
  line-height: 1.6;
}

.header {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
  color: var(--light-text);
  padding: 2rem;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.header h1 {
  margin: 0;
  font-size: 2.5rem;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.header p {
  font-size: 1.2rem;
  opacity: 0.9;
}

.container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 2rem;
}

article {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  padding: 3rem;
  margin-bottom: 3rem;
}

article h2 {
  color: var(--primary-green);
  font-size: 2rem;
  margin-top: 0;
  border-bottom: 2px solid var(--primary-blue);
  padding-bottom: 0.5rem;
  display: inline-block;
}

article h3 {
  color: var(--primary-blue);
  font-size: 1.5rem;
  margin-top: 2rem;
}

article p {
  font-size: 1.1rem;
  margin: 1.5rem 0;
}

pre {
  background: #f8f8f8;
  border-left: 4px solid var(--accent-orange);
  border-radius: 4px;
  padding: 1.5rem;
  overflow-x: auto;
  margin: 2rem 0;
  font-family: 'Courier New', monospace;
}

code {
  color: #e83e8c;
}

.img-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.img-card {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 16px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.img-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.img-card img {
  width: 100%;
  height: auto;
  display: block;
}

.notice {
  background: rgba(129, 199, 132, 0.1);
  border-left: 4px solid var(--primary-green);
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 0 4px 4px 0;
}

.footer {
  background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
  color: var(--light-text);
  padding: 2rem;
  text-align: center;
  margin-top: 3rem;
}

.footer p {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.8;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
  
  article {
    padding: 2rem 1.5rem;
  }
  
  .img-grid {
    grid-template-columns: 1fr;
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.8s ease-out forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }