html, body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: #fff;
  background: #000;
}

main {
  box-sizing: border-box;
  max-width: 1080px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

h1 {
  margin: 0;
  font-size: 40px;
  letter-spacing: 0.04em;
}

.lead {
  margin: 8px 0 0;
  color: #cfcfcf;
  font-size: 16px;
}

.credit {
  margin: 0;
  color: #fff;
  font-size: 40px;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  display: grid;
  place-items: center;
  min-height: 112px;
  padding: 24px 16px;
  background: #111;
  border: 2px solid #1a1a1a;
  border-radius: 12px;
  color: #fff;
  text-decoration: none;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.card:hover,
.card:focus-visible {
  border-color: #1a6fd4;
  background: #161616;
  outline: none;
}

@media (max-width: 800px) {
  h1,
  .credit {
    font-size: 28px;
  }

  .top {
    align-items: flex-start;
    flex-direction: column;
  }

  .cards {
    grid-template-columns: 1fr;
  }
}