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

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #1f2937;
  background: #f9fafb;
}

a {
  text-decoration: none;
}

.hero {
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: white;
  padding: 24px 20px 80px;
}

.nav {
  max-width: 1100px;
  margin: 0 auto 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.25rem;
  font-weight: bold;
}

.nav-link {
  color: white;
  font-weight: 600;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
  padding: 40px 0;
}

.hero-content h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  margin-bottom: 16px;
}

.hero-content p {
  font-size: 1.1rem;
  margin-bottom: 28px;
  opacity: 0.95;
}

.btn {
  display: inline-block;
  background: white;
  color: #2563eb;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: bold;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  opacity: 0.95;
}

.btn.secondary {
  background: #2563eb;
  color: white;
}

.features {
  max-width: 1100px;
  margin: -40px auto 0;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.feature, .cta {
  background: white;
  padding: 28px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.feature h2 {
  margin-bottom: 10px;
  font-size: 1.25rem;
}

.cta {
  max-width: 800px;
  margin: 40px auto 60px;
  text-align: center;
  padding: 40px 28px;
}

.cta h2 {
  margin-bottom: 10px;
  font-size: 2rem;
}

.cta p {
  margin-bottom: 24px;
  color: #4b5563;
}

@media (max-width: 640px) {
  .nav {
    flex-direction: column;
    gap: 12px;
  }

  .hero {
    padding-bottom: 60px;
  }
}