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

body {
  font-family: Segoe UI, Arial, sans-serif;
  background: #f4f7fb;
  color: #1f2937;
  line-height: 1.6;
}

.hero {
  background: linear-gradient(135deg, #0f172a, #1d4ed8);
  color: white;
  min-height: 100vh;
  padding: 40px 80px;
}

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

.logo {
  font-size: 28px;
  font-weight: bold;
  letter-spacing: 2px;
}

.menu a {
  color: white;
  text-decoration: none;
  margin-left: 30px;
  font-weight: 500;
}

.hero-content {
  margin-top: 140px;
  max-width: 700px;
}

.hero-content h1 {
  font-size: 64px;
  line-height: 1.1;
  margin-bottom: 30px;
}

.hero-content p {
  font-size: 22px;
  color: #dbeafe;
  margin-bottom: 40px;
}

.btn {
  display: inline-block;
  background: white;
  color: #1d4ed8;
  padding: 16px 36px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: bold;
  transition: 0.3s;
}

.btn:hover {
  transform: translateY(-2px);
}

.section {
  padding: 100px 80px;
}

.section h2 {
  font-size: 42px;
  margin-bottom: 50px;
  text-align: center;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.card {
  background: white;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.06);
}

.card h3 {
  margin-bottom: 20px;
  color: #1d4ed8;
}

.dark {
  background: #0f172a;
  color: white;
}

.about-text {
  max-width: 900px;
  margin: auto;
  font-size: 22px;
  text-align: center;
  color: #d1d5db;
}

.contact-box {
  text-align: center;
  font-size: 22px;
}

footer {
  background: #020617;
  color: #94a3b8;
  text-align: center;
  padding: 40px;
}

@media(max-width: 768px) {

  .hero {
    padding: 30px;
  }

  .hero-content {
    margin-top: 100px;
  }

  .hero-content h1 {
    font-size: 42px;
  }

  .section {
    padding: 80px 30px;
  }

  .navbar {
    flex-direction: column;
    gap: 20px;
  }

}