:root {
  --navy: #0f172a;
  --blue: #2563eb;
  --gold: #c9a227;
  --bg: #f8fafc;
  --text: #1e293b;
  --muted: #64748b;
  --line: #e2e8f0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

header {
  background: var(--navy);
  color: white;
  padding: 28px clamp(22px, 5vw, 72px);
}

header a {
  color: var(--gold);
  font-weight: 900;
  text-decoration: none;
}

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 42px 22px 80px;
}

.card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: clamp(24px, 4vw, 44px);
  box-shadow: 0 18px 40px rgba(15,23,42,.06);
}

h1, h2, h3 {
  color: var(--navy);
  letter-spacing: -.04em;
  line-height: 1.1;
}

h1 { font-size: clamp(34px, 5vw, 56px); }
h2 { margin-top: 38px; }

.notice {
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 18px;
  padding: 18px;
  color: #92400e;
  font-weight: 700;
}

ul { padding-left: 22px; }

footer {
  border-top: 1px solid var(--line);
  padding: 24px;
  text-align: center;
  color: var(--muted);
}

a { color: var(--blue); }