*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: #111;
  background: #fff;
  line-height: 1.6;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid #eee;
}

.logo { font-size: 1.5rem; font-weight: 700; color: #6366f1; }

.cta-nav {
  text-decoration: none;
  color: #6366f1;
  font-weight: 600;
  border: 2px solid #6366f1;
  padding: 0.4rem 1rem;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}

.cta-nav:hover { background: #6366f1; color: #fff; }

.hero {
  text-align: center;
  padding: 6rem 2rem;
}

.hero h1 { font-size: 3rem; font-weight: 800; margin-bottom: 1rem; }
.hero p { font-size: 1.25rem; color: #555; margin-bottom: 2rem; }

.cta-primary {
  display: inline-block;
  background: #6366f1;
  color: #fff;
  text-decoration: none;
  padding: 0.875rem 2rem;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  transition: background 0.2s;
}

.cta-primary:hover { background: #4f46e5; }

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  max-width: 960px;
  margin: 0 auto 6rem;
  padding: 0 2rem;
}

.feature { padding: 1.5rem; border: 1px solid #eee; border-radius: 10px; }
.feature h2 { margin-bottom: 0.5rem; font-size: 1.25rem; }
.feature p { color: #555; }

footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid #eee;
  color: #888;
  font-size: 0.875rem;
}