* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: #2A4A63;
  background: linear-gradient(180deg, #3FB8EE, #7FD4F5 55%, #BDEEFF);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 48px 20px;
}

.back-link {
  display: inline-block;
  margin-bottom: 20px;
  font-size: 16px;
  font-weight: 600;
  color: #2A4A63;
  background: rgba(255, 249, 238, .85);
  padding: 8px 18px;
  border-radius: 999px;
  text-decoration: none;
  box-shadow: 0 5px 0 rgba(42, 74, 99, .15);
  width: 100%;
  max-width: 720px;
}

.back-link:hover {
  transform: translateY(-2px);
}

.card {
  width: 100%;
  max-width: 720px;
  background: rgba(255, 249, 238, .95);
  border-radius: 22px;
  padding: 36px 40px;
  box-shadow: 0 8px 0 rgba(42, 74, 99, .16), 0 16px 26px rgba(42, 74, 99, .14);
  line-height: 1.6;
}

h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #2A4A63;
}

h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 28px 0 10px;
  color: #2A4A63;
}

p {
  margin-bottom: 14px;
  font-size: 16px;
}

ul {
  margin: 0 0 14px 22px;
  font-size: 16px;
}

li {
  margin-bottom: 6px;
}

strong {
  font-weight: 700;
}

a {
  color: #2A4A63;
}

.updated {
  margin-top: 30px;
  font-size: 14px;
  font-weight: 600;
  opacity: .7;
}