* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, Arial, sans-serif;
  color: #eef4ff;
  background:
    radial-gradient(circle at 20% 20%, rgba(91,140,255,.25), transparent 30%),
    radial-gradient(circle at 80% 20%, rgba(50,213,131,.15), transparent 30%),
    #070b14;
}

.page {
  width: min(1000px, 100%);
  margin: auto;
  padding: 36px 24px;
}

.back {
  display: inline-block;
  margin-bottom: 34px;
  padding: 12px 18px;
  border-radius: 999px;
  color: #eef4ff;
  text-decoration: none;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.13);
  font-weight: 900;
}

.eyebrow {
  color: #32d583;
  font-weight: 900;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(38px, 7vw, 66px);
  letter-spacing: -0.06em;
}

header p {
  color: #94a3b8;
}

.lesson-grid {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.lesson-card {
  min-height: 230px;
  padding: 32px;
  border-radius: 32px;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.13);
  color: #eef4ff;
  text-decoration: none;
  transition: .25s;
}

.lesson-card:hover {
  transform: translateY(-8px);
  border-color: #5b8cff;
}

.lesson-card span {
  font-size: 48px;
}

.lesson-card p {
  color: #94a3b8;
  line-height: 1.6;
}

@media (max-width: 700px) {
  .lesson-grid {
    grid-template-columns: 1fr;
  }
}