body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f9f9f9;
  color: #333;
  line-height: 1.7;
}

.container {
  max-width: 800px;
  margin: 40px auto;
  background: #fff;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

header {
  text-align: center;
  margin-bottom: 30px;
}

header h1 a {
  text-decoration: none;
  color: #1e88e5;
  font-size: 2.5rem;
}

.subtitle {
  font-size: 1.2rem;
  color: #777;
}

h2 {
  color: #1e88e5;
  margin-top: 30px;
}

ul, ol {
  padding-left: 20px;
}

ul li, ol li {
  margin-bottom: 10px;
}

.image-wrapper {
  margin-top: 40px;
  text-align: center;
}

.image-wrapper img {
  max-width: 100%;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}