* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f4f6f8;
  color: #1f2937;
  line-height: 1.6;
}

header {
  background: #111827;
  color: white;
  padding: 60px 20px;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 3rem;
  letter-spacing: -1px;
}

header p {
  margin-top: 10px;
  font-size: 1.2rem;
  color: #d1d5db;
}

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

section {
  background: white;
  margin-bottom: 24px;
  padding: 28px;
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

h2 {
  margin-top: 0;
  color: #111827;
}

a {
  color: #2563eb;
  text-decoration: none;
  font-weight: bold;
}

a:hover {
  text-decoration: underline;
}

button,
.button {
  display: inline-block;
  background: #2563eb;
  color: white;
  padding: 12px 20px;
  border-radius: 8px;
  border: none;
  text-decoration: none;
  font-weight: bold;
  cursor: pointer;
}

button:hover,
.button:hover {
  background: #1d4ed8;
  text-decoration: none;
}

footer {
  text-align: center;
  padding: 30px 20px;
  color: #6b7280;
}