* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #0d1117 0%, #161b22 100%);
  color: #c9d1d9;
  line-height: 1.6;
  min-height: 100vh;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}
header {
  background: rgba(22, 27, 34, 0.9);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid #30363d;
}
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: #58a6ff;
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}
.nav-links a {
  color: #c9d1d9;
  text-decoration: none;
  transition: color 0.3s;
}
.nav-links a:hover {
  color: #58a6ff;
}
.features {
  padding: 8rem 0 4rem;
}
.features h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: #58a6ff;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}
.feature-card {
  background: rgba(22, 27, 34, 0.8);
  padding: 2rem;
  border-radius: 10px;
  border: 1px solid #30363d;
  transition: transform 0.3s, box-shadow 0.3s;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: #58a6ff;
}
.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
}
.feature-card p {
  font-size: 1.1rem;
  opacity: 0.9;
}
.about {
  padding: 4rem 0;
  text-align: center;
}
.about h2 {
  font-size: 2.2rem;
  margin-bottom: 2rem;
  color: #58a6ff;
}
.about p {
  font-size: 1.1rem;
  max-width: 800px;
  margin: 0 auto 2rem;
  opacity: 0.9;
}
footer {
  background: #0d1117;
  padding: 2rem 0;
  text-align: center;
  border-top: 1px solid #30363d;
  margin-top: 4rem;
}
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.social-links {
  display: flex;
  gap: 1rem;
}
.social-links a {
  color: #6e7681;
  font-size: 1.5rem;
  transition: color 0.3s;
}
.social-links a:hover {
  color: #58a6ff;
}
@media (max-width: 768px) {
  .features h2 {
    font-size: 2rem;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}