* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f7fb;
  color: #1c2430;
  line-height: 1.6;
}

.header {
  max-width: 900px;
  margin: 48px auto 24px;
  padding: 24px;
  display: flex;
  gap: 18px;
  align-items: center;
}

.card {
  max-width: 900px;
  margin: 0 auto 24px;
  padding: 28px;
  background: #ffffff;
  border: 1px solid #dde3ee;
  border-radius: 18px;
  box-shadow: 0 12px 30px rgba(28, 36, 48, 0.08);
}

a {
  color: #2256c7;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

footer {
  max-width: 900px;
  margin: 24px auto;
  padding: 0 24px;
  color: #6a7380;
}