* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Poppins", sans-serif;
  background-color: #121212;
  color: #e0e0e0;
}
.hero {
  height: 100vh;
  background-color: #1e1e1e;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 20px;
  gap: 10px;
}
.hero h1 {
  font-size: 2.5rem;
}
.hero p {
  font-size: 1.1rem;
  opacity: 0.8;
}
.timeline {
  position: relative;
  max-width: 960px;
  margin: auto;
  padding: 80px 20px;
}
.timeline::after {
  content: "";
  position: absolute;
  width: 4px;
  background-color: #555555;
  top: 0;
  bottom: 0;
  margin-left: -2px;
  left: 50%;
}
.timeline-item {
  padding: 20px 40px;
  position: relative;
  width: 50%;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease-out;
}
.timeline-item.left {
  left: 0;
  transform: translateX(-40px) translateY(20px);
}
.timeline-item.right {
  left: 50%;
  transform: translateX(40px) translateY(20px);
}
.timeline-item.show {
  opacity: 1;
  transform: translateY(0);
}
.timeline-item::before {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  background: #00c853;
  border-radius: 50%;
  top: 20px;
  z-index: 1;
}
.timeline-item.left::before {
  right: -10px;
}
.timeline-item.right::before {
  left: -10px;
}
.timeline-item .content {
  padding: 25px;
  background: #1e1e1e;
  border-radius: 16px;
  position: relative;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  transition: transform 0.3s ease-in-out;
}
.timeline-item .content:hover {
  transform: translateY(-4px);
}
.icon {
  font-size: 30px;
  color: #00c853;
  margin-bottom: 10px;
  display: inline-block;
  transform: scale(0.8);
  transition: transform 0.5s ease-in-out 0.3s;
}
.timeline-item.show .icon {
  transform: scale(1.3);
}
h2 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}
p {
  font-size: 1rem;
  opacity: 0.9;
}