* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.6 system-ui, sans-serif;
  background: #f8fafc;
  color: #1e293b;
}

header, footer {
  max-width: 960px;
  margin: auto;
  padding: 24px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 700;
  font-size: 22px;
}

nav {
  display: flex;
  gap: 24px;
}

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

main {
  max-width: 960px;
  margin: 80px auto;
  padding: 24px;
  min-height: 45vh;
}

h1 { font-size: 40px; }

footer {
  color: #64748b;
  border-top: 1px solid #e2e8f0;
}