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

body {
  font-family: "Montserrat", sans-serif;
  background: #0f172a;
  color: #fff;
  min-height: 100vh;

  display: flex;
  justify-content: center;
  align-items: center;

  padding: 20px;
}

.container {
  width: 100%;
  max-width: 700px;
  text-align: center;
}

h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 25px;
}

p {
  font-size: 18px;
  line-height: 1.8;
  color: #d1d5db;
  margin-bottom: 35px;
}

a {
  display: inline-block;
  padding: 15px 35px;
  background: #2563eb;
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  transition: 0.3s ease;
}

a:hover {
  background: #1d4ed8;
}

/* Tablet */

@media (max-width: 768px) {
  h1 {
    font-size: 36px;
  }

  p {
    font-size: 17px;
  }

  a {
    width: 100%;
    max-width: 320px;
  }
}

/* Mobile */

@media (max-width: 480px) {
  body {
    padding: 16px;
  }

  h1 {
    font-size: 28px;
    line-height: 1.3;
  }

  p {
    font-size: 15px;
    line-height: 1.7;
  }

  a {
    width: 100%;
    padding: 14px;
    font-size: 15px;
  }
}