:root {
  --fundo: #f7f7fb;
  --cartao: #ffffff;
  --texto: #1d1b2e;
  --suave: #5c5a70;
  --marca: #5b3df5;
  --linha: #e6e4f0;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fundo: #121120;
    --cartao: #1c1a2e;
    --texto: #f1f0fa;
    --suave: #b3b0c9;
    --marca: #9c8bff;
    --linha: #2e2b45;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--fundo);
  color: var(--texto);
  line-height: 1.6;
}
.topo, main, footer { max-width: 860px; margin: 0 auto; padding: 0 20px; }
.topo { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; padding-bottom: 24px; }
.logo { font-weight: 800; font-size: 1.3rem; color: var(--texto); text-decoration: none; }
.logo span { color: var(--marca); }
nav a { color: var(--suave); text-decoration: none; margin-left: 16px; font-size: 0.95rem; }
nav a:hover { color: var(--marca); }
.hero { padding: 48px 0 32px; }
.hero h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); line-height: 1.2; margin: 0 0 16px; }
.hero p { color: var(--suave); font-size: 1.1rem; max-width: 640px; margin: 0; }
.cartoes { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; padding: 24px 0 48px; }
.cartao { background: var(--cartao); border: 1px solid var(--linha); border-radius: 16px; padding: 20px; }
.cartao h2 { font-size: 1.05rem; margin: 0 0 8px; }
.cartao p { margin: 0; color: var(--suave); font-size: 0.95rem; }
.texto { background: var(--cartao); border: 1px solid var(--linha); border-radius: 16px; padding: 28px; margin: 16px 0 48px; }
.texto h1 { margin-top: 0; font-size: 1.8rem; }
.texto h2 { font-size: 1.15rem; margin-top: 28px; }
.aviso { background: color-mix(in srgb, var(--marca) 12%, transparent); border-radius: 10px; padding: 12px 16px; font-size: 0.95rem; }
footer { border-top: 1px solid var(--linha); padding-top: 24px; padding-bottom: 40px; color: var(--suave); font-size: 0.9rem; }
footer a { color: var(--marca); }