:root {
  --navy: #0B2545;
  --blue: #13315C;
  --accent: #1D6FB8;
  --accent2: #2E9BE0;
  --light: #EEF3F8;
  --gray: #5B6B7C;
  --dark: #16212E;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: linear-gradient(160deg, var(--navy) 0%, var(--blue) 55%, #0a1c33 100%);
  font-family: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  color: var(--dark);
}

.card {
  width: 100%;
  max-width: 520px;
  background: #FFFFFF;
  border-radius: 16px;
  padding: 40px 36px 32px;
  box-shadow: 0 18px 48px rgba(4, 16, 32, 0.45);
  border-top: 5px solid var(--accent);
}

.brand {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

h1 {
  margin: 0 0 14px;
  font-size: 26px;
  line-height: 1.25;
  font-weight: 600;
  color: var(--navy);
}

.lead {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--gray);
}

.hints {
  margin: 0 0 26px;
  padding: 18px 18px 18px 34px;
  background: var(--light);
  border-left: 4px solid var(--accent2);
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--dark);
}

.hints li { margin: 0 0 6px; }
.hints li:last-child { margin-bottom: 0; }

.foot {
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid #D3DDE7;
  font-size: 12px;
  line-height: 1.5;
  color: var(--gray);
}

@media (max-width: 480px) {
  .card { padding: 30px 22px 24px; }
  h1 { font-size: 22px; }
}