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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: #2c2c2c;
  background: #fafafa;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  line-height: 1.6;
}

main {
  max-width: 600px;
  width: 100%;
}

h1 {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.3rem;
}

p {
  color: #555;
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

ul {
  color: #555;
  font-size: 1.05rem;
  margin: 0.5rem 0;
  padding-left: 1.2rem;
}

li {
  margin-bottom: 0.4rem;
}

a {
  color: #2c2c2c;
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover {
  color: #000;
}

.back {
  display: inline-block;
  margin-top: 1.5rem;
  font-size: 0.9rem;
}

footer {
  margin-top: 2rem;
  font-size: 0.85rem;
}

footer a {
  color: #888;
}

footer a:hover {
  color: #2c2c2c;
}

.sep {
  color: #ccc;
  margin: 0 0.4rem;
}