:root {
  color-scheme: light dark;
}

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  color: #1a1a1a;
  background-color: #ffffff;
}

h1 {
  color: #000000;
  border-bottom: 3px solid #3498db;
  padding-bottom: 10px;
}

h2 {
  color: #000000;
  margin-top: 30px;
  border-bottom: 2px solid #95a5a6;
  padding-bottom: 5px;
}

h3 {
  color: #1a1a1a;
  margin-top: 20px;
}

.info-section {
  background-color: #ecf0f1;
  padding: 15px;
  border-radius: 5px;
  margin-bottom: 20px;
}

.info-section p {
  margin: 5px 0;
}

ul {
  margin: 10px 0;
  padding-left: 25px;
}

li {
  margin: 8px 0;
}

a {
  color: #3498db;
  word-wrap: break-word;
}

.design-grid {
  display: grid;
  gap: 15px;
  margin: 20px 0;
}

@media (min-width: 768px) {
  .design-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

.design-item {
  text-align: center;
}

.design-item img {
  width: 100%;
  border-radius: 5px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.design-item img.milestone {
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
}

.design-item p {
  margin-top: 8px;
  font-size: 14px;
  color: #666;
}

.schedule-table {
  margin-top: 10px;
}

.schedule-item {
  margin-bottom: 15px;
  padding: 10px;
  background-color: #f8f9fa;
  border-left: 4px solid #3498db;
}

.schedule-item strong {
  color: #000000;
}

p {
  color: #1a1a1a;
}

li {
  color: #1a1a1a;
}