:root {
  --primary: #02625b;
  --primary-light: #0a8a81;
  --bg: #f5f7f7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: var(--bg);
  color: #222;
}

/* NAVBAR */
nav {
  background: white;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

nav h1 {
  color: var(--primary);
  margin: 0;
  font-size: 1.2rem;
}

nav a {
  margin-left: 1rem;
  text-decoration: none;
  color: #333;
  font-weight: 500;
}

nav a:hover {
  color: var(--primary);
}

/* HERO */
.hero {
  text-align: center;
  padding: 5rem 2rem;
  background: linear-gradient(135deg, #02625b, #038c83);
  color: white;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  max-width: 600px;
  margin: 0 auto;
  opacity: 0.9;
}

/* CONTENT */
main {
  padding: 3rem 2rem;
  max-width: 1000px;
  margin: auto;
}

/* FEATURES */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  padding: 3rem 2rem;
  max-width: 1000px;
  margin: auto;
}

.card {
  background: white;
  padding: 1.5rem;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  transition: 0.2s;
}

.card:hover {
  transform: translateY(-5px);
}

.card h3,
.card h2 {
  color: var(--primary);
  margin-top: 0;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.9rem;
  color: #666;
}