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

body {
  font-family: 'Segoe UI', sans-serif;
  background: #0b1120;
  color: #e5e7eb;
  line-height: 1.6;
}

a {
  color: #60a5fa;
  text-decoration: none;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  position: sticky;
  top: 0;
  background: rgba(11,17,32,0.9);
  backdrop-filter: blur(10px);
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
}

.logo span {
  color: #38bdf8;
}

.nav-links a {
  margin-left: 20px;
  font-weight: 500;
}

.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: radial-gradient(circle at top, #1e3a8a, #020617);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
}

.hero h1 span {
  background: linear-gradient(90deg, #38bdf8, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.btn-primary {
  display: inline-block;
  margin-top: 30px;
  padding: 14px 36px;
  background: linear-gradient(90deg, #38bdf8, #6366f1);
  color: #020617;
  font-weight: 600;
  border-radius: 30px;
}

.section {
  padding: 80px 40px;
  text-align: center;
}

.section.dark {
  background: #020617;
}

.section h2 {
  font-size: 2.2rem;
  margin-bottom: 20px;
}

.section-text {
  max-width: 800px;
  margin: auto;
  opacity: 0.9;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 25px;
  margin-top: 50px;
}

.card {
  background: linear-gradient(180deg, #0b122a, #020617);
  padding: 30px;
  border-radius: 18px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-8px);
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  max-width: 900px;
  margin: 40px auto 0;
}

.features div {
  background: #020617;
  padding: 20px;
  border-radius: 14px;
}

.footer {
  text-align: center;
  padding: 25px;
  background: #020617;
  font-size: 14px;
  opacity: 0.8;
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.2rem;
  }
}