:root {
  --green: #26A17B;
  --dark: #0B2B3C;
  --gray: #6B7280;
  --bg: #F9FAFB;
}

* {
  box-sizing: border-box;
  font-family: Inter, Arial, sans-serif;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--dark);
}

/* Header */
header {
  background: #fff;
  padding: 20px 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #E5E7EB;
}

nav a {
  margin-left: 24px;
  text-decoration: none;
  font-weight: 600;
  color: var(--dark);
}

/* Sections */
section {
  padding: 80px 60px;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

h1 {
  font-size: 52px;
}

p {
  color: var(--gray);
  line-height: 1.6;
}

.btn {
  display: inline-block;
  margin-top: 24px;
  padding: 14px 28px;
  background: var(--green);
  color: white;
  border-radius: 10px;
  text-decoration: none;
  font-weight: bold;
}

/* Cards */
.card {
  background: white;
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 15px 40px rgba(0,0,0,0.05);
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}

/* Footer */
footer {
  background: white;
  padding: 32px;
  text-align: center;
  color: var(--gray);
  border-top: 1px solid #E5E7EB;
}

@media (max-width: 900px) {
  header { padding: 16px 24px; }
  section { padding: 60px 24px; }
  .hero { grid-template-columns: 1fr; }
}