body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(180deg, #0f766e, #0a2540);
  color: #ffffff;
}

a {
  color: #6ee7b7;
  text-decoration: none;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 20px;
}

header {
  background: rgba(0,0,0,0.25);
  border-bottom: 1px solid rgba(255,255,255,0.15);
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.hero {
  text-align: center;
  padding: 70px 20px;
}

.hero h1 {
  font-size: 2.3rem;
}

.hero p {
  color: #d1fae5;
  font-size: 1.1rem;
}

.btn {
  display: inline-block;
  padding: 14px 22px;
  background: rgba(255,255,255,0.15);
  color: #ffffff;
  border-radius: 10px;
  margin-top: 10px;
}

.btn.primary {
  background: linear-gradient(135deg, #10b981, #3b82f6);
  color: #022c22;
  font-weight: bold;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px,1fr));
  gap: 20px;
}

.card {
  background: rgba(255,255,255,0.1);
  padding: 22px;
  border-radius: 14px;
}

footer {
  background: rgba(0,0,0,0.35);
  text-align: center;
  padding: 30px 10px;
  margin-top: 50px;
  font-size: 0.9rem;
  color: #d1fae5;
}