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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", sans-serif;
  line-height: 1.6;
  color: #e5e7eb;
  background-color: #0f172a;
}

h1,
h2,
h3 {
  font-family: "Poppins", sans-serif;
  line-height: 1.2;
  color: #ffffff;
}

a {
  text-decoration: none;
}

.container {
  width: 90%;
  max-width: 1150px;
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 0;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: #cbd5e1;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: #ffffff;
}

.hero {
  padding: 7rem 0 6rem;
  background: linear-gradient(to bottom, #0f172a, #111827);
  text-align: center;
}

.hero h2 {
  font-size: 3rem;
  max-width: 850px;
  margin: 0 auto 1.25rem;
}

.hero p {
  max-width: 720px;
  margin: 0 auto 2rem;
  font-size: 1.1rem;
  color: #cbd5e1;
}

.btn {
  display: inline-block;
  background: #2563eb;
  color: #ffffff;
  padding: 0.9rem 1.4rem;
  border-radius: 10px;
  font-weight: 600;
  transition: transform 0.2s ease, background 0.2s ease;
}

.btn:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

.section {
  padding: 5rem 0;
}

.section h2 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.section p {
  max-width: 800px;
  color: #cbd5e1;
}

.section-alt {
  background: #111827;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 1.6rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.6);
}

.card h3 {
  margin-bottom: 0.8rem;
  font-size: 1.2rem;
}

.card p {
  color: #cbd5e1;
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  padding: 1.5rem 0;
  color: #94a3b8;
  background: #0f172a;
}

@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    gap: 0.9rem;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero h2 {
    font-size: 2.2rem;
  }

  .section h2 {
    font-size: 1.8rem;
  }
}