:root{
    --azul:#1b2da6;
    --azul2:#263edc;
    --texto:#111827;
    --muted:#475569;
    --bg:#f4f6f8;
    --card:#ffffff;
    --borda:#e5e7eb;
    --verde:#16a34a;
    --laranja:#f97316;
}
*{box-sizing:border-box}
body{
    margin:0;
    font-family:Arial, Helvetica, sans-serif;
    background:var(--bg);
    color:var(--texto);
}
.topo{
    background:var(--azul);
    color:#fff;
    padding:34px 24px;
    box-shadow:0 2px 14px rgba(15,23,42,.16);
}
.topo .linha{
    max-width:1160px;
    margin:auto;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
}
.logo{
    font-size:24px;
    font-weight:900;
    letter-spacing:1px;
}
.logo span{
    display:block;
    font-size:13px;
    font-weight:600;
    opacity:.9;
    margin-top:4px;
}
.menu{
    display:flex;
    gap:10px;
    flex-wrap:wrap;
}
.menu a{
    color:#fff;
    text-decoration:none;
    background:rgba(255,255,255,.13);
    padding:11px 15px;
    border-radius:9px;
    font-weight:800;
    font-size:14px;
}
.menu a:hover{background:rgba(255,255,255,.22)}
.hero{
    max-width:1160px;
    margin:38px auto 22px;
    padding:0 18px;
}
.hero-card{
    background:#fff;
    border-radius:22px;
    padding:44px;
    box-shadow:0 14px 38px rgba(15,23,42,.08);
}
.tag{
    display:inline-block;
    background:#eef2ff;
    color:var(--azul);
    padding:8px 13px;
    border-radius:999px;
    font-size:13px;
    font-weight:900;
    margin-bottom:18px;
}
h1{
    font-size:42px;
    line-height:1.1;
    margin:0 0 16px;
}
h2{
    font-size:28px;
    margin:0 0 14px;
}
h3{
    margin:0 0 8px;
    font-size:19px;
}
p{
    color:var(--muted);
    line-height:1.65;
    font-size:16px;
}
.hero p{
    max-width:820px;
    font-size:18px;
}
.botoes{
    display:flex;
    gap:12px;
    flex-wrap:wrap;
    margin-top:26px;
}
.btn{
    display:inline-block;
    text-decoration:none;
    padding:13px 18px;
    border-radius:10px;
    font-weight:900;
    border:1px solid var(--azul);
    color:var(--azul);
    background:#fff;
}
.btn.primary{
    background:var(--azul);
    color:#fff;
}
.btn:hover{filter:brightness(.96)}
.grid{
    max-width:1160px;
    margin:22px auto;
    padding:0 18px;
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:18px;
}
.card{
    background:var(--card);
    border:1px solid var(--borda);
    border-radius:18px;
    padding:24px;
    box-shadow:0 8px 24px rgba(15,23,42,.04);
}
.secao{
    max-width:1160px;
    margin:22px auto;
    padding:0 18px;
}
.box{
    background:#fff;
    border-radius:20px;
    padding:34px;
    box-shadow:0 12px 30px rgba(15,23,42,.07);
}
.lista{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:14px;
    margin-top:18px;
}
.item{
    background:#f8fafc;
    border:1px solid #e5e7eb;
    padding:18px;
    border-radius:14px;
}
.aviso{
    background:#fff7ed;
    border-left:5px solid var(--laranja);
    padding:18px 20px;
    border-radius:12px;
    margin-top:22px;
    color:#7c2d12;
    line-height:1.6;
}
.livro-demo{
    display:grid;
    grid-template-columns:1fr 2fr;
    gap:22px;
    align-items:start;
}
.capa{
    min-height:220px;
    border-radius:16px;
    background:linear-gradient(135deg,#1b2da6,#6d5bd0);
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    font-weight:900;
    padding:20px;
    text-align:center;
}
.meta{
    display:flex;
    gap:8px;
    flex-wrap:wrap;
    margin:12px 0;
}
.meta span{
    background:#eef2ff;
    color:#1b2da6;
    padding:7px 10px;
    border-radius:999px;
    font-size:12px;
    font-weight:900;
}
.rodape{
    margin-top:42px;
    background:#111827;
    color:#fff;
    padding:32px 22px;
}
.rodape .linha{
    max-width:1160px;
    margin:auto;
    display:flex;
    justify-content:space-between;
    gap:20px;
    flex-wrap:wrap;
}
.rodape p,
.rodape a{
    color:#cbd5e1;
    font-size:14px;
}
.rodape a{
    text-decoration:none;
    margin-right:14px;
}
@media(max-width:850px){
    .topo .linha{display:block}
    .menu{margin-top:18px}
    h1{font-size:32px}
    .hero-card{padding:28px}
    .grid{grid-template-columns:1fr}
    .lista{grid-template-columns:1fr}
    .livro-demo{grid-template-columns:1fr}
}