main { flex: 1; outline: none; }
.vitrine-corpo:focus,
.ebooks-lista:focus,
.estado-bloco:focus { outline: none; }

[hidden] { display: none !important; }

.vitrine { padding: 3rem 0 4.5rem; }
.vitrine-grade { display: grid; gap: 2.6rem; }

@media (min-width: 900px) {
  .vitrine { padding: 5rem 0 6rem; }
  .vitrine-grade {
    grid-template-columns: minmax(280px, 340px) minmax(0, 1fr);
    gap: 5rem;
    align-items: start;
  }
  .vitrine-abertura { position: sticky; top: 2rem; }
}

.vitrine-abertura h1 {
  font-size: clamp(2.3rem, 7vw, 3.5rem);
  letter-spacing: -0.01em;
}
.vitrine-abertura h1::after {
  content: "";
  display: block;
  width: 3.5rem;
  height: 1px;
  margin-top: 0.9rem;
  background: linear-gradient(90deg, var(--ouro), transparent);
}

.vitrine-abertura .lede {
  max-width: 30ch;
  margin: 1.4rem 0 0;
  font-size: 1.2rem;
  line-height: 1.55;
  color: var(--tinta-2);
  text-wrap: balance;
}

.como {
  display: flex;
  gap: 0.8rem;
  max-width: 38ch;
  margin: 2rem 0 0;
  padding-top: 1.3rem;
  border-top: 1px solid var(--regua);
  font: 400 15px/1.55 var(--letra-ui);
  color: var(--tinta-2);
}
.como svg {
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  fill: none;
  stroke: var(--ouro-tinta);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ebooks-lista {
  display: grid;
  gap: 1.1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ebook-cartao {
  position: relative;
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  grid-template-areas: "capa texto" "compra compra";
  gap: 1rem 1.1rem;
  padding: 1.1rem;
  border: 1px solid var(--regua);
  background: var(--papel-2);
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.ebook-cartao:hover {
  border-color: var(--ouro);
  transform: translateY(-2px);
  box-shadow: 0 1px 2px rgba(20, 22, 26, 0.06), 0 12px 34px rgba(20, 22, 26, 0.09);
}

.cartao-capa { grid-area: capa; position: relative; align-self: start; }
.cartao-capa img {
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border-radius: 2px 6px 6px 2px;
  box-shadow: 0 1px 2px rgba(20, 22, 26, 0.06), 0 12px 34px rgba(20, 22, 26, 0.09);
}
.cartao-capa::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 6px;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0));
  border-radius: 2px 0 0 2px;
  pointer-events: none;
}

.cartao-texto { grid-area: texto; min-width: 0; }
.cartao-ficha {
  margin: 0 0 0.55rem;
  font: 600 12px/1.4 var(--letra-ui);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tinta-3);
}
.cartao-texto h2 {
  font-size: clamp(1.4rem, 5.4vw, 1.75rem);
  overflow-wrap: anywhere;
}
.cartao-sub {
  margin: 0.5rem 0 0;
  font: italic 450 1.05rem/1.4 var(--letra-texto);
  color: var(--ardosia);
}

.cartao-compra {
  grid-area: compra;
  display: grid;
  gap: 0.8rem;
  align-items: center;
  align-self: end;
}
.cartao-preco {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin: 0;
  font: 600 1.45rem/1.2 var(--letra-ui);
  color: var(--tinta);
}
.cartao-formato {
  font: 600 12px/1.3 var(--letra-ui);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tinta-3);
}

.cartao-botao {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 48px;
  padding: 0 1.6rem;
  border-radius: 2px;
  background: var(--ouro);
  color: #17140C;
  box-shadow: 0 2px 0 var(--ouro-escuro);
  font: 600 15px/1.2 var(--letra-ui);
  text-decoration: none;
  transition: background 0.25s, box-shadow 0.25s;
}
.cartao-botao::after { content: ""; position: absolute; inset: 0; }
.cartao-botao svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.ebook-cartao:hover .cartao-botao,
.cartao-botao:hover { background: var(--ouro-claro); box-shadow: 0 4px 0 var(--ouro-escuro); }

@media (min-width: 640px) {
  .ebook-cartao {
    grid-template-columns: 140px minmax(0, 1fr);
    grid-template-areas: "capa texto" "capa compra";
    grid-template-rows: auto 1fr;
    gap: 1.2rem 1.8rem;
    padding: 1.4rem;
  }
  .cartao-compra {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }
}

.estado {
  min-height: 8rem;
  margin: 0;
  font: 400 1.1rem/1.55 var(--letra-texto);
  color: var(--tinta-2);
}
.estado a,
.estado-link a {
  display: inline-block;
  padding: 12px 0;
  line-height: 20px;
  color: var(--ouro-tinta);
  text-underline-offset: 3px;
}
.estado a:hover,
.estado-link a:hover { color: var(--tinta); }

.estado-bloco h2 { font-size: clamp(1.6rem, 4.6vw, 2.1rem); }
.estado-bloco p { max-width: 46ch; margin: 1rem 0 0; color: var(--tinta-2); }
.estado-bloco .estado-link { margin-top: 0.6rem; }

.amazon-lista {
  display: grid;
  gap: 0.7rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
}
.amazon-lista a {
  display: block;
  min-height: 44px;
  padding: 1rem 1.1rem;
  border: 1px solid var(--regua);
  background: var(--papel-2);
  text-decoration: none;
  transition: border-color 0.25s;
}
.amazon-lista a:hover { border-color: var(--ouro); }
.amazon-ficha {
  display: block;
  font: 600 12px/1.3 var(--letra-ui);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tinta-3);
}
.amazon-titulo {
  display: block;
  margin-top: 0.3rem;
  font: 450 1.25rem/1.25 var(--letra-titulo);
  font-variation-settings: "opsz" 16;
  color: var(--tinta);
}
.amazon-acao {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.4rem;
  font: 600 15px/1.3 var(--letra-ui);
  color: var(--tinta);
}
.amazon-acao svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: var(--ouro-tinta);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.botao-tentar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin-top: 1.4rem;
  padding: 0 1.6rem;
  border: 1px solid var(--regua);
  border-radius: 2px;
  background: var(--papel-2);
  color: var(--tinta);
  font: 600 15px/1.2 var(--letra-ui);
  cursor: pointer;
  transition: border-color 0.25s, color 0.25s;
}
.botao-tentar:hover { border-color: var(--ouro); color: var(--ouro-tinta); }
@media (max-width: 520px) {
  .botao-tentar,
  .cartao-botao { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .ebook-cartao,
  .cartao-botao,
  .amazon-lista a,
  .botao-tentar { transition: none; }
  .ebook-cartao:hover { transform: none; }
}