:root {
  --navy: #0f172a;
  --orange: #f26b1f;
  --text: #1f2937;
  --muted: #5b6475;
  --bg: #f2f3f6;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 32px 16px;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.card {
  width: 100%;
  max-width: 560px;
  background: #fff;
  border-top: 4px solid var(--orange);
  border-radius: 8px;
  padding: 40px 36px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 8px 24px rgba(15, 23, 42, 0.06);
}
.brand {
  margin: 0 0 24px;
  color: var(--navy);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
h1 {
  margin: 0 0 12px;
  color: var(--navy);
  font-size: 30px;
  line-height: 1.2;
}
.lead { font-size: 18px; color: var(--navy); }
p { margin: 0 0 16px; }
a { color: var(--navy); text-decoration-color: var(--orange); text-underline-offset: 3px; }
a:hover { color: var(--orange); }
.back { margin: 28px 0 0; font-weight: 600; }
footer { max-width: 560px; text-align: center; font-size: 13px; color: var(--muted); }
@media (max-width: 480px) {
  .card { padding: 28px 22px; }
  h1 { font-size: 26px; }
}
.check { color: var(--muted); font-size: 14px; }