body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #f8fafc;
  line-height: 1.6;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px;
  max-width: 1100px;
  margin: 0 auto;
}

nav a {
  color: #f8fafc;
  text-decoration: none;
  margin-left: 20px;
  font-weight: bold;
}

nav > a {
  margin-left: 0;
  color: #38bdf8;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 80px 24px;
}

.badge {
  color: #38bdf8;
  font-weight: bold;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-size: 14px;
}

h1 {
  font-size: 48px;
  margin: 16px 0;
  line-height: 1.1;
}

.subtitle {
  font-size: 22px;
  color: #cbd5e1;
  max-width: 720px;
}

.card {
  margin-top: 32px;
  padding: 28px;
  background: #1e293b;
  border-radius: 16px;
}

h2 {
  margin-top: 0;
  color: #e0f2fe;
}

footer {
  margin-top: 48px;
  color: #94a3b8;
  font-size: 14px;
}