* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background: black;
  color: white;
  overflow-x: hidden;
}

.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: url('https://images.unsplash.com/photo-1535223289827-42f1e9919769?auto=format&fit=crop&w=1950&q=80') no-repeat center center/cover;
}

.overlay {
  position: absolute;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
}

.content {
  position: relative;
  text-align: center;
  z-index: 2;
}

.content h1 {
  font-size: 3rem;
  color: cyan;
  text-shadow: 0 0 15px cyan;
}

.content span {
  color: magenta;
  text-shadow: 0 0 15px magenta;
}

.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 24px;
  background: linear-gradient(45deg, cyan, magenta);
  color: black;
  font-weight: bold;
  border-radius: 25px;
  text-decoration: none;
  transition: 0.3s;
}

.btn:hover {
  opacity: 0.8;
}

.features {
  padding: 50px 20px;
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.feature-card {
  background: rgba(255, 255, 255, 0.05);
  padding: 20px;
  border-radius: 12px;
  backdrop-filter: blur(10px);
  box-shadow: 0 0 10px rgba(0,255,255,0.3);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
}

.particle {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(45deg, cyan, magenta);
  pointer-events: none;
  animation: fadeOut 1s linear forwards;
}

@keyframes fadeOut {
  to {
    opacity: 0;
    transform: scale(2);
  }
}