* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f5f6f8;
  color: #222;
}

.container {
  max-width: 900px;
  margin: auto;
  padding: 40px 20px;
}

header {
  text-align: center;
  margin-bottom: 40px;
}

header h1 {
  font-size: 28px;
  letter-spacing: 1px;
  margin-bottom: 5px;
}

header h2 {
  font-size: 20px;
  font-weight: normal;
  color: #555;
  margin-bottom: 10px;
}

.tagline {
  color: #777;
  font-size: 14px;
}

section {
  background: #ffffff;
  padding: 25px;
  border-radius: 6px;
  margin-bottom: 20px;
}

section h3 {
  margin-top: 0;
  border-bottom: 1px solid #ddd;
  padding-bottom: 8px;
}

ul {
  padding-left: 18px;
}

li {
  margin-bottom: 8px;
}

a {
  color: #0056b3;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.legacy {
  background: #f0f2f5;
}

footer {
  text-align: center;
  font-size: 13px;
  color: #777;
  margin-top: 30px;
}