body { font-family: system-ui, Arial, sans-serif; margin: 0; }
.container { max-width: 900px; margin: 0 auto; padding: 1rem; }
.site-header { border-bottom: 1px solid #ddd; }
.site-title { margin: 0 0 .5rem 0; font-size: 1.2rem; }
.nav a { margin-right: .75rem; text-decoration: none; }
.site-footer { border-top: 1px solid #ddd; margin-top: 2rem; }
label { display: inline-block; margin-right: 1rem; }
input[type="text"], input[type="email"] { 
  width: 100%; 
  max-width: 600px; 
  padding: 0.5rem; 
  box-sizing: border-box;
}
textarea {
  padding: 0.5rem;
  box-sizing: border-box;
  font-family: inherit;
  font-size: inherit;
}