* {
  box-sizing: border-box;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  margin: 0;
  background: #ffffff;
  color: #111;
}

.nav {
  display: flex;
  justify-content: space-between;
  padding: 20px 40px;
  border-bottom: 1px solid #eee;
}

.nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #333;
}

.logo {
  font-weight: 700;
  font-size: 20px;
}

.hero {
  padding: 80px 40px;
  max-width: 900px;
  margin: auto;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 16px;
}

.hero p {
  font-size: 18px;
  color: #555;
}

.buttons {
  margin-top: 30px;
}

.btn {
  padding: 14px 22px;
  border-radius: 8px;
  text-decoration: none;
  margin-right: 12px;
  display: inline-block;
}

.primary {
  background: #0bbcd6;
  color: #fff;
}

.secondary {
  border: 1px solid #ccc;
  color: #111;
}

.section {
  padding: 80px 40px;
  max-width: 900px;
  margin: auto;
}

.section.alt {
  background: #f7f9fb;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.card {
  padding: 24px;
  border: 1px solid #eee;
  border-radius: 12px;
}

.list {
  list-style: none;
  padding: 0;
  font-size: 18px;
}

.list li {
  margin: 12px 0;
}

.footer {
  padding: 40px;
  text-align: center;
  color: #777;
  border-top: 1px solid #eee;
}