:root {
  --azul: #1863c5;
  --azul-escuro: #0f4a99;
  --azul-suave: #e8f0fb;
  --fundo: #f4f5f8;
  --superficie: #ffffff;
  --texto: #10131a;
  --texto-suave: #525a6a;
  --borda: #e3e6ec;
  --raio: 18px;
  --largura: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --azul: #5b9bf0;
    --azul-escuro: #8ab8f5;
    --azul-suave: #16233a;
    --fundo: #0b0c0e;
    --superficie: #16181d;
    --texto: #f2f4f8;
    --texto-suave: #a3abba;
    --borda: #262a32;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--fundo);
  color: var(--texto);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  letter-spacing: -0.01em;
}

a { color: var(--azul); }

/* height: auto é o que impede a imagem de esticar: o atributo height do HTML
   fica valendo quando a largura encolhe, e a captura virava um palito. */
img { max-width: 100%; height: auto; display: block; }

.wrap { max-width: var(--largura); margin: 0 auto; padding: 0 20px; }

/* Topo */
.topo { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--fundo) 88%, transparent); backdrop-filter: blur(12px); border-bottom: 1px solid var(--borda); }
.topo .wrap { display: flex; align-items: center; justify-content: space-between; height: 62px; gap: 16px; }
.marca { display: flex; align-items: center; gap: 10px; color: var(--texto); text-decoration: none; font-weight: 700; font-size: 19px; }
.marca img { width: 32px; height: 32px; border-radius: 9px; }
.menu { display: flex; gap: 20px; }
.menu a { color: var(--texto-suave); text-decoration: none; font-size: 15px; }
.menu a:hover, .menu a[aria-current="page"] { color: var(--texto); }

/* Herói */
.heroi { padding: 48px 0 32px; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.heroi h1 { font-size: clamp(34px, 5vw, 52px); line-height: 1.08; letter-spacing: -0.03em; margin: 0 0 18px; }
.heroi p.sub { font-size: 19px; color: var(--texto-suave); margin: 0 0 28px; max-width: 34ch; }
.selos { display: flex; flex-wrap: wrap; gap: 12px; }
.loja { display: inline-flex; align-items: center; gap: 10px; background: #000; color: #fff; text-decoration: none; padding: 10px 18px 10px 14px; border-radius: 12px; min-height: 54px; border: 1px solid #333; }
.loja svg { width: 26px; height: 26px; flex: none; }
.loja span { display: flex; flex-direction: column; line-height: 1.15; }
.loja small { font-size: 11px; opacity: 0.85; }
.loja strong { font-size: 18px; font-weight: 600; }
.loja:hover { background: #1b1b1b; }
.nota { font-size: 14px; color: var(--texto-suave); margin-top: 14px; }
.vitrine { display: flex; justify-content: center; }
.celular { width: min(280px, 78vw); border-radius: 36px; border: 8px solid #10131a; box-shadow: 0 30px 60px -20px rgba(16, 19, 26, 0.35); overflow: hidden; background: #10131a; }
.celular img { height: min(520px, 112vw); width: 100%; object-fit: cover; object-position: top; }

/* Seções */
section { padding: 48px 0; }
.titulo-secao { font-size: clamp(26px, 3.4vw, 34px); letter-spacing: -0.02em; margin: 0 0 8px; }
.texto-secao { color: var(--texto-suave); margin: 0 0 32px; max-width: 60ch; }
.grade { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cartao { background: var(--superficie); border-radius: var(--raio); padding: 24px; border: 1px solid var(--borda); }
.cartao h3 { margin: 12px 0 6px; font-size: 18px; letter-spacing: -0.01em; }
.cartao p { margin: 0; color: var(--texto-suave); font-size: 15px; }
.icone { width: 42px; height: 42px; border-radius: 12px; background: var(--azul-suave); color: var(--azul); display: grid; place-items: center; font-size: 20px; }

.telas { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.telas figure { margin: 0; }
.telas img { border-radius: 22px; border: 1px solid var(--borda); }
.telas figcaption { font-size: 14px; color: var(--texto-suave); text-align: center; margin-top: 10px; }

.planos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.plano .preco { color: var(--azul); font-weight: 600; font-size: 15px; margin-top: 4px; }
.plano ul { margin: 14px 0 0; padding-left: 18px; color: var(--texto-suave); font-size: 15px; }
.plano li { margin: 4px 0; }

.chamada { background: var(--azul); color: #fff; border-radius: 28px; padding: 48px 32px; text-align: center; }
.chamada h2 { margin: 0 0 10px; font-size: clamp(26px, 3.4vw, 34px); letter-spacing: -0.02em; }
.chamada p { margin: 0 0 24px; opacity: 0.9; }
.chamada .selos { justify-content: center; }

/* Páginas de texto */
.doc { max-width: 760px; padding: 48px 20px 64px; margin: 0 auto; }
.doc h1 { font-size: clamp(30px, 4vw, 40px); letter-spacing: -0.025em; margin: 6px 0 12px; }
.doc .vigencia { color: var(--azul); font-weight: 600; font-size: 14px; }
.doc h2 { font-size: 20px; margin: 32px 0 8px; letter-spacing: -0.01em; }
.doc p, .doc li { color: var(--texto-suave); }
.doc .intro { font-size: 18px; }

details { background: var(--superficie); border: 1px solid var(--borda); border-radius: 14px; padding: 4px 18px; margin: 10px 0; }
summary { cursor: pointer; font-weight: 600; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--azul); font-weight: 400; font-size: 22px; line-height: 1; }
details[open] summary::after { content: "–"; }
details p { margin: 0 0 16px; }

.contato { background: var(--azul-suave); border-radius: var(--raio); padding: 24px; margin-top: 32px; }
.contato p { margin: 4px 0; }

/* Rodapé */
footer { border-top: 1px solid var(--borda); padding: 32px 0 40px; margin-top: 32px; }
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; color: var(--texto-suave); font-size: 14px; }
footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
footer a { color: var(--texto-suave); text-decoration: none; }
footer a:hover { color: var(--texto); }

@media (max-width: 860px) {
  .heroi { grid-template-columns: 1fr; padding-top: 40px; text-align: left; }
  .grade, .planos { grid-template-columns: 1fr; }
  .telas { grid-template-columns: repeat(2, 1fr); }
  .menu { gap: 14px; }
  .menu a.opcional { display: none; }
}