* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #222;
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px;
}

header {
  margin-bottom: 40px;
}

header a {
  text-decoration: none;
  color: inherit;
}

h1 {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

h2 {
  font-size: 1.3rem;
  margin-top: 32px;
  margin-bottom: 8px;
}

h3 {
  font-size: 1.1rem;
  margin-top: 20px;
  margin-bottom: 4px;
}

p {
  margin-bottom: 12px;
}

ul {
  margin-bottom: 12px;
  padding-left: 24px;
}

a {
  color: #0055aa;
}

nav {
  margin-top: 12px;
}

nav a {
  margin-right: 16px;
}

.login-button {
  display: inline-block;
  padding: 10px 20px;
  background-color: #222;
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
  font-size: 0.95rem;
}

.login-button:hover {
  background-color: #444;
}

footer {
  margin-top: 60px;
  padding-top: 20px;
  border-top: 1px solid #ddd;
  font-size: 0.85rem;
  color: #666;
}