:root {
  --fundo: #ffffff;
  --texto: #16181d;
  --suave: #5b6070;
  --linha: #e3e5ea;
  --realce: #0b57d0;
  --caixa: #f6f7f9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fundo: #101218;
    --texto: #e8eaf0;
    --suave: #9aa1b1;
    --linha: #272b35;
    --realce: #7aa7ff;
    --caixa: #171a22;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 0 16px 96px;
  background: var(--fundo);
  color: var(--texto);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 720px; margin: 0 auto; }
header { padding: 48px 0 8px; border-bottom: 1px solid var(--linha); margin-bottom: 32px; }
h1 { font-size: 1.75rem; line-height: 1.25; margin: 0 0 8px; letter-spacing: -0.01em; }
h2 { font-size: 1.15rem; margin: 40px 0 12px; letter-spacing: -0.005em; }
h3 { font-size: 1rem; margin: 24px 0 8px; }
p, li { color: var(--texto); }
.sub { color: var(--suave); font-size: 0.9rem; margin: 0; }
a { color: var(--realce); }
table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 0.93rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--linha); vertical-align: top; }
th { font-weight: 600; color: var(--suave); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.04em; }
.caixa { background: var(--caixa); border: 1px solid var(--linha); border-radius: 12px; padding: 16px 20px; margin: 24px 0; }
.caixa p:first-child { margin-top: 0; }
.caixa p:last-child { margin-bottom: 0; }
footer { margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--linha); color: var(--suave); font-size: 0.87rem; }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }
@media (max-width: 560px) {
  table, thead, tbody, th, td, tr { display: block; }
  thead { display: none; }
  td { border: none; padding: 2px 0; }
  tr { border-bottom: 1px solid var(--linha); padding: 12px 0; }
  td:first-child { font-weight: 600; }
}