:root{--fundo:#ffffff;--texto:#1c2430;--suave:#5a6676;--linha:#d9dee5;--destaque:#0b5fff;--cartao:#f5f7fa}
@media (prefers-color-scheme:dark){:root{--fundo:#12161c;--texto:#e6eaf0;--suave:#9aa6b6;--linha:#2a323d;--destaque:#6aa0ff;--cartao:#1a2029}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--fundo);color:var(--texto);font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
header,main,footer{max-width:46rem;margin:0 auto;padding:0 1rem}
header{padding-top:1.5rem;padding-bottom:1rem;border-bottom:1px solid var(--linha);display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;align-items:baseline;justify-content:space-between}
.marca{font-weight:700;font-size:1.25rem;color:var(--texto);text-decoration:none}
nav a{margin-right:1rem;color:var(--destaque)}
main{padding-top:2rem;padding-bottom:3rem}
h1{font-size:1.8rem;line-height:1.25;margin:0 0 .5rem}
h2{font-size:1.2rem;margin:2rem 0 .5rem}
p,li{margin:.5rem 0}
ul{padding-left:1.25rem}
a{color:var(--destaque)}
.meta{color:var(--suave);font-size:.9rem}
.cartao{background:var(--cartao);border:1px solid var(--linha);border-radius:8px;padding:1rem 1.25rem;margin:1.5rem 0}
footer{padding-top:1rem;padding-bottom:2rem;border-top:1px solid var(--linha);color:var(--suave);font-size:.9rem}