* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  color: #1a1a1a;
  background: #fafafa;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: #fff;
  border-bottom: 1px solid #eee;
}

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

.logo:hover {
  color: #333;
}

.header nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 6px;
  cursor: pointer;
  border: none;
  transition: background 0.15s, color 0.15s;
}

.btn-primary {
  background: #1a1a1a;
  color: #fff;
}

.btn-primary:hover {
  background: #333;
  color: #fff;
}

.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
  text-align: center;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  max-width: 20ch;
}

.lead {
  margin: 0 0 1.5rem;
  font-size: 1.125rem;
  color: #444;
  max-width: 36ch;
}

.btn-cta {
  background: #1a1a1a;
  color: #fff;
}

.btn-cta:hover {
  background: #333;
  color: #fff;
}

.footer {
  padding: 1rem 1.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: #666;
  border-top: 1px solid #eee;
  background: #fff;
}