* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f4f6f8;
  color: #20252b;
}

main {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 20px;
}

.card {
  width: min(620px, 100%);
  background: #fff;
  border: 1px solid #e2e6ea;
  border-radius: 16px;
  padding: 42px;
  box-shadow: 0 10px 30px rgba(20, 30, 40, .06);
}

.mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: #20252b;
  color: #fff;
  font-weight: 700;
  font-size: 22px;
}

h1 {
  margin: 24px 0 12px;
  font-size: 32px;
}

p {
  line-height: 1.6;
}

.lead {
  color: #5b6570;
  font-size: 17px;
}

.ok {
  display: inline-block;
  font-weight: 600;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 28px;
}

a {
  color: #20252b;
  text-decoration: none;
  border-bottom: 1px solid #aab2ba;
}

a:hover {
  border-color: #20252b;
}

footer {
  margin-top: 38px;
  color: #8a929a;
  font-size: 13px;
}