:root{
  --creme:#f2f2f1;
  --creme2:#e7e7e6;
  --tinta:#171716;
  --tinta-suave:#4d4d4b;
  --linha:rgba(23,23,22,.15);
  --linha-forte:rgba(23,23,22,.5);
  --bronze:#93672c;
  --bronze-escuro:#6e4d20;
  --branco:#fcfcfb;
  --preto:#131312;
  --azul-vanitelli:#031026;
  --sombra:0 18px 40px rgba(20,20,20,.10);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--creme);
  color:var(--tinta);
  font-family:'Work Sans',Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
picture{display:contents}
a{color:inherit;text-decoration:none}
.env{max-width:1180px;margin:0 auto;padding:0 28px}

h1,h2,h3,h4{font-family:'Playfair Display',Georgia,serif;font-weight:700;margin:0;line-height:1.15}

/* ---------- topo ---------- */
.faixa-topo{background:var(--preto);color:#cfc9bc;font-size:12.5px;letter-spacing:.06em}
.faixa-topo .env{display:flex;justify-content:space-between;align-items:center;height:34px}

.cabecalho{background:var(--branco);border-bottom:1px solid var(--linha)}
.cabecalho .env{padding:26px 28px 18px;text-align:center}
.cabecalho .logo{display:inline-block;max-width:420px;width:70%}
.cabecalho .logo img{margin:0 auto}
.cabecalho .tagline{margin:10px 0 0;font-size:14px;color:var(--tinta-suave)}

nav.menu{border-top:1px solid var(--linha);border-bottom:1px solid var(--linha)}
nav.menu ul{list-style:none;display:flex;justify-content:center;flex-wrap:wrap;gap:2px;margin:0;padding:0}
nav.menu a{
  display:block;padding:14px 16px;font-size:12.5px;font-weight:600;
  letter-spacing:.08em;text-transform:uppercase;color:var(--tinta);
  border-bottom:2px solid transparent;
}
nav.menu a:hover,nav.menu a.ativo{border-color:var(--bronze);color:var(--bronze-escuro)}
.menu-burger{display:none}

/* ---------- etiqueta de caderno ---------- */
.etq{
  display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--bronze-escuro);
}
.etq::before{content:"";display:inline-block;width:14px;height:1px;background:var(--bronze);margin-right:8px;vertical-align:middle}

/* ---------- hero da home ---------- */
.hero{padding:52px 0 20px}
.hero-grade{display:grid;grid-template-columns:1.4fr 1fr;gap:44px;align-items:start}
.hero-principal img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--creme2)}
.hero-principal .corpo{padding-top:18px}
.hero-principal h1{font-size:34px;margin:10px 0 12px}
.hero-lista{display:flex;flex-direction:column;gap:22px}
.hero-lista .item{display:grid;grid-template-columns:96px 1fr;gap:14px;align-items:start}
.hero-lista img{width:96px;height:96px;object-fit:cover}
.hero-lista h3{font-size:16.5px;margin:6px 0 0}

.resumo{color:var(--tinta-suave);font-size:15.5px;margin-top:10px}
.meta{color:var(--tinta-suave);font-size:12.5px;letter-spacing:.03em;margin-top:8px}

.botao{
  display:inline-block;margin-top:18px;padding:11px 22px;border:1px solid var(--tinta);
  font-size:12.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
}
.botao:hover{background:var(--tinta);color:var(--branco)}

/* ---------- separador ornamental (eco da logo) ---------- */
.ornamento{display:flex;align-items:center;gap:14px;margin:54px 0 34px}
.ornamento .tracos{flex:1;height:1px;background:var(--linha-forte)}
.ornamento .diamante{width:7px;height:7px;background:var(--bronze);transform:rotate(45deg)}
.ornamento h2{font-size:13px;letter-spacing:.14em;text-transform:uppercase;white-space:nowrap;color:var(--tinta-suave)}

/* ---------- grade de matérias ---------- */
.grade{display:grid;grid-template-columns:repeat(3,1fr);gap:40px 32px;padding-bottom:20px}
.cartao img{width:100%;aspect-ratio:5/4;object-fit:cover;background:var(--creme2)}
.cartao h3{font-size:19px;margin:12px 0 8px}
.cartao .resumo{font-size:14.5px}

/* ---------- cadernos (grade de 7) ---------- */
.grade-cadernos{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--linha);border:1px solid var(--linha);margin:20px 0 10px}
.caderno-tile{background:var(--branco);padding:30px 22px;min-height:168px;display:flex;flex-direction:column;justify-content:space-between}
.caderno-tile h3{font-size:17px;margin:14px 0 8px}
.caderno-tile p{font-size:13.5px;color:var(--tinta-suave);margin:0}
.caderno-tile .num{font-family:'Playfair Display',serif;font-size:13px;color:var(--bronze)}
.caderno-tile.fechamento{background:var(--preto);color:#cfc9bc;justify-content:center;align-items:center;text-align:center;gap:10px}
.caderno-tile.fechamento .diamante{width:8px;height:8px;background:var(--bronze);transform:rotate(45deg)}
.caderno-tile.fechamento p{color:#cfc9bc;font-family:'Playfair Display',serif;font-style:italic;font-size:15px;max-width:170px}

/* ---------- migalhas de pão ---------- */
.migalhas{padding:14px 0;font-size:12.5px;color:var(--tinta-suave);border-bottom:1px solid var(--linha)}
.migalhas .linha-util{display:flex;align-items:center;justify-content:space-between;gap:16px}
.migalhas .trilha{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.migalhas a{color:var(--tinta-suave)}
.migalhas a:hover{color:var(--tinta)}
.migalhas .sep{color:var(--linha-forte)}
.migalhas span:not(.sep){color:var(--tinta)}
.migalhas .autor-link{flex:none;color:var(--bronze-escuro);white-space:nowrap}
.migalhas .autor-link:hover{color:var(--tinta)}

/* ---------- sumário da matéria ---------- */
.sumario{max-width:700px;margin:0 auto 10px;background:var(--branco);border:1px solid var(--linha);padding:22px 26px}
.sumario p{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--bronze-escuro);margin:0 0 10px}
.sumario ol{margin:0;padding-left:18px}
.sumario li{font-size:14.5px;margin-bottom:6px}
.sumario a{color:var(--tinta);text-decoration:underline;text-decoration-color:var(--linha-forte)}

/* ---------- cabeçalho de caderno ---------- */
.faixa-caderno{background:var(--creme2);border-bottom:1px solid var(--linha);padding:54px 0;text-align:center}
.faixa-caderno .etq{font-size:12.5px}
.faixa-caderno h1{font-size:40px;font-style:italic;margin:14px 0 16px}
.faixa-caderno p{max-width:620px;margin:0 auto;color:var(--tinta-suave);font-size:16.5px}
.faixa-caderno .intro{max-width:680px;font-size:16px;line-height:1.6;margin-top:18px}

.vazio{padding:70px 20px;text-align:center;color:var(--tinta-suave)}
.vazio .diamante{width:9px;height:9px;background:var(--bronze);transform:rotate(45deg);margin:0 auto 18px}
.vazio p{max-width:440px;margin:10px auto 0;font-size:15px}

/* ---------- página de matéria ---------- */
.materia-cabeca{max-width:760px;margin:0 auto;padding:50px 0 26px;text-align:center}
.materia-cabeca h1{font-size:38px;margin:16px 0 14px}
.materia-capa{max-width:980px;margin:0 auto 10px}
.materia-capa img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--creme2)}

.materia-corpo{max-width:700px;margin:0 auto;padding:44px 0}
.materia-corpo h2{font-family:'Playfair Display',serif;font-style:italic;font-weight:600;color:var(--bronze-escuro);font-size:24px;margin:38px 0 14px}
.materia-corpo p{font-size:17px;color:#242019;margin:0 0 18px}
.materia-corpo ul{padding-left:20px;margin:0 0 18px}
.materia-corpo li{font-size:17px;margin-bottom:8px}
.materia-corpo strong{color:var(--tinta)}
.materia-corpo p a,.materia-corpo li a{color:var(--bronze-escuro);text-decoration:underline;text-decoration-color:rgba(110,77,32,.35);text-underline-offset:2px}
.materia-corpo p a:hover,.materia-corpo li a:hover{text-decoration-color:var(--bronze-escuro)}

/* ---------- calculadora ---------- */
.calc-caixa{background:var(--branco);border:1px solid var(--linha);padding:28px;margin:24px 0;display:grid;gap:18px}
.calc-caixa label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600;color:var(--tinta)}
.calc-ajuda{font-size:12.5px;font-weight:400;color:var(--tinta-suave)}
.calc-caixa input{font-family:'Work Sans',sans-serif;font-size:16px;padding:10px 12px;border:1px solid var(--linha-forte);background:var(--creme)}
.calc-caixa .botao{justify-self:start;border-color:var(--tinta);cursor:pointer;background:none;font-family:'Work Sans',sans-serif}
.calc-resultado{background:var(--creme2);padding:18px 20px;font-size:15px}
.calc-resultado p{margin:0 0 6px;font-size:15px}
.citacao{
  border-left:3px solid var(--bronze);margin:34px 0;padding:4px 0 4px 22px;
  font-family:'Playfair Display',serif;font-style:italic;font-size:22px;line-height:1.4;
}

.cta-vanitelli{max-width:700px;margin:44px auto 0;background:var(--azul-vanitelli);color:#f3efe6;padding:36px 38px;text-align:center;border-radius:14px}
.cta-vanitelli p{font-family:'Playfair Display',serif;font-style:italic;font-size:19px;line-height:1.45;margin:0 0 20px;color:#f3efe6}
.botao-claro{display:inline-block;padding:11px 22px;border:1px solid #fff;border-radius:6px;background:#fff;font-size:12.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--azul-vanitelli)}
.botao-claro:hover{background:transparent;color:#fff}

.compartilhar{display:flex;gap:10px;justify-content:center;margin:30px auto 0;max-width:700px}
.compartilhar a{
  width:38px;height:38px;border:1px solid var(--linha);border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:14px;
}
.compartilhar a:hover{border-color:var(--tinta)}

.relacionadas{background:var(--creme2);border-top:1px solid var(--linha);padding:48px 0 56px}
.relacionadas .env>.etq{display:block;text-align:center;margin-bottom:26px}

/* ---------- rodapé ---------- */
footer{background:var(--preto);color:#a9a397;padding:50px 0 26px;margin-top:50px}
footer .logo-rodape{max-width:280px;filter:invert(1);opacity:.92;margin:0 auto 26px}
footer nav ul{list-style:none;display:flex;justify-content:center;flex-wrap:wrap;gap:4px 20px;padding:0;margin:0 0 28px;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase}
footer nav a:hover{color:var(--branco)}
footer .copy{text-align:center;font-size:12px;color:#6d685d;border-top:1px solid rgba(255,255,255,.08);padding-top:20px}

/* ---------- responsivo ---------- */
@media (max-width:900px){
  .hero-grade{grid-template-columns:1fr}
  .grade{grid-template-columns:repeat(2,1fr)}
  .grade-cadernos{grid-template-columns:repeat(2,1fr)}
  nav.menu ul{flex-wrap:nowrap;justify-content:flex-start;overflow-x:auto;-webkit-overflow-scrolling:touch}
  nav.menu a{white-space:nowrap}
}
@media (max-width:620px){
  .grade{grid-template-columns:1fr}
  .cabecalho .logo{width:92%}
  .materia-cabeca h1,.faixa-caderno h1{font-size:28px}
  .hero-principal h1{font-size:26px}
  .migalhas .linha-util{flex-direction:column;align-items:flex-start;gap:10px}
}