body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #fdf6ec;
  color: #333333;
}

header {
  background-color: #2a7f62;
  color: white;
  text-align: center;
  padding: 24px;
}

header h1 {
  margin: 0;
}

main {
  max-width: 800px;
  margin: 0 auto;
  padding: 16px;
}

.concept {
  display: flex;
  gap: 24px;
  align-items: center;
}

.concept img {
  width: 200px;
  border-radius: 12px;
}

table {
  border-collapse: collapse;
}

th, td {
  border: 1px solid #c8b8a0;
  padding: 8px 16px;
  text-align: left;
}

th {
  background-color: #f0e2cc;
}

footer {
  text-align: center;
  font-size: 0.8em;
  padding: 16px;
}