* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  background: #ffffff;
  color: #1f2937;
  line-height: 1.7;
}

header {
  background: #22c55e;
  color: #fff;
  padding: 18px 0;
}

header h1 {
  text-align: center;
  font-size: 26px;
  font-weight: 700;
}

nav {
  text-align: center;
  margin-top: 8px;
}

nav a {
  color: #eafff2;
  margin: 0 14px;
  text-decoration: none;
  font-weight: 500;
}

.hero {
  max-width: 900px;
  margin: auto;
  padding: 90px 20px;
  text-align: center;
}

.hero h2 {
  font-size: 44px;
  margin-bottom: 20px;
}

.hero p {
  font-size: 18px;
  color: #4b5563;
  margin-bottom: 35px;
}

.button {
  background: #22c55e;
  color: white;
  padding: 14px 30px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  display: inline-block;
}

.section {
  padding: 70px 20px;
}

.container {
  max-width: 1100px;
  margin: auto;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 30px;
}

.card {
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  padding: 28px;
  background: #ffffff;
}

.card h3 {
  margin-bottom: 10px;
}

footer {
  background: #f9fafb;
  padding: 30px 20px;
  text-align: center;
  font-size: 14px;
  color: #6b7280;
}

footer a {
  color: #22c55e;
  text-decoration: none;
  margin: 0 10px;
}