* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background: #f4f7fb;
  color: #1f2937;
  min-height: 100vh;
}
.container {
  max-width: 740px;
  margin: 3rem auto;
  padding: 2rem;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 18px 50px rgba(31, 41, 55, 0.08);
}
header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}
section {
  margin-top: 1.5rem;
}
section h2 {
  color: #111827;
  margin-bottom: 0.75rem;
}
ul {
  list-style-type: disc;
  padding-left: 1.5rem;
}
li {
  margin-bottom: 0.5rem;
}