*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  color: #1a1a1a;
  background: #fafafa;
}

header {
  background: #fff;
  border-bottom: 1px solid #e5e5e5;
  padding: 1rem 2rem;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 960px;
  margin: 0 auto;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: #1a1a1a;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.5rem;
}

nav a {
  text-decoration: none;
  color: #444;
}

nav a:hover {
  color: #0066cc;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem;
}

h1 {
  margin-top: 0;
}

footer {
  text-align: center;
  padding: 2rem;
  color: #666;
  font-size: 0.875rem;
}