* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: #333;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  min-height: 100vh;
  padding: 20px;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

header {
  background: linear-gradient(135deg, #667eea 0%, #b37848 100%);
  color: white;
  padding: 40px 30px;
  text-align: center;
}

header h1 {
  font-size: 2.5em;
  margin-bottom: 10px;
}

.content {
  padding: 40px 30px;
}

h2 {
  color: #667eea;
  font-size: 1.8em;
  margin-top: 35px;
  margin-bottom: 15px;
  border-left: 4px solid #667eea;
  padding-left: 15px;
}

h2:first-child {
  margin-top: 0;
}

h3 {
  color: #667eea;
  font-size: 1.3em;
  margin-top: 25px;
  margin-bottom: 12px;
}

p {
  margin-bottom: 20px;
  color: #555;
  font-size: 1.05em;
}

ul {
  margin-bottom: 20px;
  margin-left: 25px;
  color: #555;
  font-size: 1.05em;
}

li {
  margin-bottom: 8px;
}

.image-container {
  margin: 30px 0;
  text-align: center;
}

.image-container img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  margin-bottom: 10px;
}

.image-caption {
  font-style: italic;
  color: #888;
  font-size: 0.95em;
}

@media (max-width: 600px) {
  header h1 {
    font-size: 2em;
  }
  
  .content {
    padding: 25px 20px;
  }
}