* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: monospace;
  background: white;
}

nav {
  position: fixed;
  top: 20px;
  left: 24px;
  z-index: 100;
}

nav a {
  color: #aaa;
  text-decoration: none;
  font-family: monospace;
  font-size: 0.85em;
}

nav a:hover {
  color: #222;
}

.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85em;
  color: #aaa;
}

.section {
  padding: 80px 40px;
  max-width: 720px;
  margin: 0 auto;
}

.cards-wrap {
  perspective: 1000px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.card-3d {
  opacity: 0;
  transform: perspective(800px) rotateY(-80deg);
  transform-origin: left center;
}

.card-inner {
  background: #fff;
  border: 1px solid #e0e0e0;
  padding: 28px 32px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.num {
  font-size: 1.6em;
  color: #e0e0e0;
  flex-shrink: 0;
  width: 32px;
}

.card-inner p {
  margin: 0;
  color: #555;
  font-size: 0.9em;
  line-height: 1.6;
}