body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  margin: 0;
  background: #f5f7fb;
  color: #1f2937;
}

.container {
  max-width: 850px;
  margin: 50px auto;
  padding: 30px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

h1 {
  font-size: 34px;
  margin-bottom: 10px;
}

.updated {
  color: #6b7280;
  font-size: 14px;
}

h2 {
  margin-top: 35px;
  font-size: 22px;
}

h3 {
  margin-top: 20px;
  font-size: 18px;
}

p {
  line-height: 1.7;
}

ul {
  padding-left: 20px;
}

a {
  color: #2563eb;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

footer {
  margin-top: 50px;
  text-align: center;
  color: #9ca3af;
}