:root {
  --bg: #070b1a;
  --surface: #0f1530;
  --border: rgba(255, 255, 255, 0.1);
  --text: #eef2ff;
  --muted: #9aa4c7;
  --primary: #4de8ff;
  --accent: #a26bff;
  --warm: #ffb547;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 16px 64px;
}

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

.marca {
  font-weight: 800;
  letter-spacing: 4px;
  font-size: 15px;
  color: var(--primary);
  text-decoration: none;
  text-shadow: 0 0 12px rgba(77, 232, 255, 0.5);
}

h1 {
  font-size: clamp(32px, 7vw, 52px);
  line-height: 1.1;
  margin: 28px 0 12px;
}

h1 span {
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

h2 {
  font-size: 22px;
  margin: 36px 0 8px;
}

.sub {
  color: var(--muted);
  font-size: 19px;
}

.cartao {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px 20px;
  margin: 14px 0;
}

.grade {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
}

.grade .cartao {
  margin: 0;
}

.cartao b {
  color: var(--warm);
}

.pequeno,
footer {
  color: var(--muted);
  font-size: 14px;
}

footer {
  margin-top: 48px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

li {
  margin: 6px 0;
}