:root {
  font-family: Arial, Helvetica, sans-serif;
  color: #1f2937;
  background: #f5f7fb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  line-height: 1.65;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 22px 72px;
}

article {
  background: #ffffff;
  border-radius: 18px;
  padding: 36px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.07);
}

h1,
h2 {
  line-height: 1.25;
  color: #111827;
}

h1 {
  margin-top: 0;
  font-size: 2rem;
}

h2 {
  margin-top: 30px;
  font-size: 1.2rem;
}

a {
  color: #0f766e;
}

.muted {
  color: #6b7280;
}

.links {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.links a,
.button {
  display: block;
  padding: 16px 18px;
  border: 1px solid #d1d5db;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  background: #ffffff;
}

.button {
  display: inline-block;
  margin-top: 12px;
  border: 0;
  background: #0f766e;
  color: #ffffff;
}

footer {
  margin-top: 28px;
  text-align: center;
  color: #6b7280;
  font-size: 0.92rem;
}

@media (max-width: 640px) {
  main {
    padding: 20px 14px 48px;
  }

  article {
    padding: 24px 20px;
  }
}