body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: linear-gradient(135deg, #e6e9f0 0%, #eef1f5 50%, #d4d7dd 100%);
  background-size: 400% 400%;
  animation: gradientBG 15s ease infinite;
  background-attachment: fixed;
}

@keyframes gradientBG {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

a {
  font-size: 21px;
  color: #1d1d1f;
  text-decoration: none;
  padding: 12px 24px;
  border-radius: 980px;
  background-color: rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
  letter-spacing: -0.022em;
}

a:hover {
  background-color: rgba(0, 0, 0, 0.1);
  transform: scale(1.02);
}

main {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  backdrop-filter: blur(20px);
}

.title {
  margin: 0;
  line-height: 1.15;
  font-size: 4rem;
}

.title,
.description {
  text-align: center;
}

.description {
  margin: 4rem 0;
  line-height: 1.5;
  font-size: 1.5rem;
}

.code {
  background: #fafafa;
  border-radius: 5px;
  padding: 0.75rem;
  font-size: 1.1rem;
  font-family: Menlo, Monaco, Lucida Console, Liberation Mono, DejaVu Sans Mono,
    Bitstream Vera Sans Mono, Courier New, monospace;
}

.grid {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 800px;
}

.card {
  margin: 1rem;
  padding: 1.5rem;
  text-align: left;
  color: inherit;
  text-decoration: none;
  border: 1px solid #eaeaea;
  border-radius: 10px;
  transition: color 0.15s ease, border-color 0.15s ease;
  max-width: 300px;
}

.card:hover,
.card:focus,
.card:active {
  color: #0070f3;
  border-color: #0070f3;
}

.card h2 {
  margin: 0 0 1rem 0;
  font-size: 1.5rem;
}

.card p {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.5;
}

@media (max-width: 600px) {
  .grid {
    width: 100%;
    flex-direction: column;
  }
}