:root{--fg:#1b1f2a;--mut:#4a5163;--bg:#fff;--soft:#f3f5fa;--acc:#1f4fd1;--bd:#d5dae6}
*{box-sizing:border-box}
html{font-size:clamp(16px,1.1vw + 10px,22px)}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--fg);background:var(--bg);line-height:1.6}
.col{width:min(80vw,1400px);margin:0 auto}
@media(max-width:700px){.col{width:auto;margin:0 16px}}
header.top{border-bottom:1px solid var(--bd);padding:.6rem 0}
header.top .col{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem 1.2rem}
.brand{font-weight:700;color:var(--fg);text-decoration:none;margin-right:auto}
nav a{color:var(--fg);text-decoration:none;margin-right:1rem}
nav a:hover,nav a[aria-current]{color:var(--acc);text-decoration:underline}
nav a.entrar{background:var(--acc);color:#fff;padding:.3rem .8rem;border-radius:.4rem;margin:0}
a{color:var(--acc)}
h1{font-size:2.2rem;line-height:1.2;margin:1.5rem 0 .5rem}
h2{font-size:1.5rem;margin:2rem 0 .5rem}
h3{font-size:1.15rem;margin:1.2rem 0 .3rem}
.hero{background:var(--soft);padding:2rem 0;margin-bottom:1rem}
.hero p{font-size:1.2rem;max-width:42em}
.btn{display:inline-block;background:var(--acc);color:#fff;padding:.6rem 1.2rem;border-radius:.4rem;text-decoration:none;margin:.3rem .6rem .3rem 0}
.btn.sec{background:#fff;color:var(--acc);border:2px solid var(--acc)}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:1rem}
.card{border:1px solid var(--bd);border-radius:.6rem;padding:1rem}
.card.rec{border:2px solid var(--acc)}
.preco{font-size:1.6rem;font-weight:700}
.sel{color:var(--acc);font-weight:600}
pre{background:var(--soft);padding:1rem;overflow-x:auto;border-radius:.4rem}
.nota{color:var(--mut);font-size:.9rem}
footer{border-top:1px solid var(--bd);margin-top:3rem;padding:1rem 0 2rem;color:var(--mut);font-size:.9rem}