body {
  margin: 0;
  font-family: Arial;
  background: black;
  color: white;
  overflow-x: hidden;
}

/* HERO */
.hero {
  height: 100vh;
  position: relative;
  background: url('https://images.unsplash.com/photo-1581092918056-0c4c3acd3789') center/cover;
}

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

.content {
  position: relative;
  top: 40%;
  text-align: center;
}

.hero h1 {
  font-size: 60px;
}

.hero p {
  color: #aaa;
}

/* SECTIONS */
.section {
  padding: 120px 20px;
  text-align: center;
}

.dark {
  background: #111;
}

/* FLOW */
.flow {
  display: flex;
  align-items: center;
  justify-content: center;
}

.node {
  padding: 20px;
  border: 1px solid #444;
  border-radius: 10px;
}

.line {
  width: 60px;
  height: 2px;
  background: #555;
}

/* METRICS */
.metrics {
  display: flex;
  justify-content: space-around;
}

.metric span {
  font-size: 50px;
}

/* MODULES */
.modules {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.module {
  padding: 40px;
  border: 1px solid #333;
  transition: 0.3s;
}

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

/* FADE IN */
.fade {
  opacity: 0;
  transform: translateY(30px);
  transition: 1s;
}

.fade.visible {
  opacity: 1;
  transform: translateY(0);
}