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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Sans", sans-serif;
  background-color: #f5f5f5;
  color: #333;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

main {
  text-align: center;
  padding: 2rem;
  max-width: 500px;
}

h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #222;
}

p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #666;
  margin-bottom: 2rem;
  text-wrap: balance;
}

button {
  background-color: #ff9900;
  color: #fff;
  border: none;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
}

button:hover {
  background-color: #e68a00;
}

button:active {
  transform: scale(0.98);
}

footer {
  position: fixed;
  bottom: 1rem;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 0.75rem;
  color: #999;
}

footer a {
  color: #999;
  text-decoration: none;
}

footer a:hover {
  color: #666;
  text-decoration: underline;
}