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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: #f4f6f9;
  color: #333;
  line-height: 1.6;
}

header {
  background: #1f2937;
  color: white;
  padding: 1rem 2rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  letter-spacing: 0.5px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.25s ease;
}

nav a:hover {
  color: #60a5fa;
}

.hero {
  max-width: 1100px;
  margin: 60px auto;
  padding: 0 20px;
  text-align: center;
}

.hero h1 {
  font-size: 2.8rem;
  color: #1f2937;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.1rem;
  color: #666;
  max-width: 700px;
  margin: auto;
}

.content {
  max-width: 1100px;
  margin: 50px auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
}

.card {
  background: white;
  border-radius: 10px;
  padding: 25px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.1);
}

.card h2 {
  margin-bottom: 12px;
  color: #1f2937;
  font-size: 1.3rem;
}

.card p {
  color: #555;
}

footer {
  text-align: center;
  padding: 25px;
  margin-top: 60px;
  background: #1f2937;
  color: #bbb;
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    gap: 1rem;
  }

  nav ul {
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero h1 {
    font-size: 2.2rem;
  }
}