* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  background-color: #f9fafb;
  color: #222;
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
}

.center {
  text-align: center;
}

.logo {
  max-width: 180px;
  margin-bottom: 30px;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  background-color: #111827;
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-size: 16px;
  transition: 0.3s;
}

.btn:hover {
  background-color: #374151;
}

footer {
  margin-top: auto;
  padding: 20px;
  text-align: center;
  background-color: #111827;
  color: #fff;
  font-size: 14px;
}

footer a {
  color: #fff;
  text-decoration: underline;
  margin: 0 10px;
}

h1, h2 {
  margin-bottom: 20px;
  color: #111827;
}

p {
  margin-bottom: 18px;
}

ul {
  margin-bottom: 18px;
  padding-left: 20px;
}