.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.container-estreito { max-width: 760px; }

/* Topo */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(10, 14, 26, .82); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-conteudo { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 20px; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { text-decoration: none; color: var(--muted); font-weight: 500; font-size: .95rem; }
.nav-links a:hover { color: var(--text); }

/* Hero */
.hero { padding: 80px 0 90px; background: radial-gradient(900px 500px at 85% 20%, rgba(124, 108, 255, .18), transparent 60%); }
.hero-grade { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.selo {
  display: inline-block; padding: 6px 14px; border-radius: 999px; font-size: .85rem; font-weight: 600;
  color: var(--accent-2); background: rgba(34, 211, 238, .1); border: 1px solid rgba(34, 211, 238, .25);
}
.hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); line-height: 1.1; letter-spacing: -0.03em; margin: 18px 0; }
.grad { background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-texto { font-size: 1.12rem; color: var(--muted); max-width: 520px; }
.hero-acoes { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 12px; }
.hero-nota { font-size: .9rem; color: var(--muted); }

/* TV de demonstração */
.tv-demo { display: grid; justify-items: center; }
.tv-moldura {
  position: relative; width: 100%; aspect-ratio: 16 / 9; border-radius: 16px; overflow: hidden;
  background: #000; border: 10px solid #1d2335; box-shadow: 0 30px 80px rgba(0, 0, 0, .55), 0 0 0 1px var(--line);
}
.tv-pe { width: 30%; height: 14px; margin-top: 6px; border-radius: 0 0 10px 10px; background: #1d2335; }
.tv-slide {
  position: absolute; inset: 0; display: grid; place-content: center; text-align: center; gap: 4px; padding: 20px;
  opacity: 0; animation: slide 12s infinite;
}
.tv-slide small { text-transform: uppercase; letter-spacing: .15em; font-weight: 700; font-size: clamp(.7rem, 1.4vw, .9rem); opacity: .85; }
.tv-slide strong { font-size: clamp(1.8rem, 5vw, 3.4rem); line-height: 1.05; letter-spacing: -0.02em; }
.tv-slide span { font-size: clamp(.8rem, 1.6vw, 1.05rem); opacity: .9; }
.s1 { background: linear-gradient(135deg, #ff4d6d, #ff9f1c); }
.s2 { background: linear-gradient(135deg, #0f766e, #22c55e); animation-delay: 4s; }
.s3 { background: linear-gradient(135deg, #4338ca, #7c6cff); animation-delay: 8s; }
@keyframes slide {
  0% { opacity: 0; transform: scale(1.04); }
  5%, 30% { opacity: 1; transform: scale(1); }
  36%, 100% { opacity: 0; }
}

/* Seções */
.secao { padding: 90px 0; }
.secao-escura { background: var(--surface); border-block: 1px solid var(--line); }
.titulo { font-size: clamp(1.7rem, 3.4vw, 2.4rem); letter-spacing: -0.02em; text-align: center; margin: 0 0 10px; }
.subtitulo { text-align: center; color: var(--muted); margin: 0 0 48px; }

.passos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.passo { padding: 28px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); }
.passo-num {
  display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px;
  background: var(--gradient); color: #fff; font-weight: 800;
}
.passo h3 { margin: 16px 0 6px; }
.passo p { margin: 0; color: var(--muted); }

.recursos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 40px; }
.recurso { padding: 24px; border-radius: var(--radius); background: var(--bg); border: 1px solid var(--line); }
.recurso h3 { margin: 0 0 6px; font-size: 1.08rem; }
.recurso p { margin: 0; color: var(--muted); }

/* Planos */
/* os cards (.escolha-plano) estão no base.css, iguais aos do painel; esta é a caixa em volta, igual à janela dele */
.caixa-planos {
  max-width: 940px; margin: 0 auto; padding: 30px; border-radius: 18px;
  background: var(--surface); border: 1px solid var(--line); box-shadow: 0 30px 80px rgba(0, 0, 0, .35);
}

/* Downloads */
.downloads { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.download { padding: 28px; border-radius: var(--radius); background: var(--bg); border: 1px solid var(--line); text-align: center; }
.download h3 { margin: 0 0 6px; }
.download p { color: var(--muted); margin: 0 0 20px; }
.link-ajuda {
  display: block; margin: 14px auto 0; padding: 4px; border: 0; background: none;
  color: var(--accent-2); font-size: .9rem; text-decoration: underline; cursor: pointer;
}

/* Janelas de ajuda da instalação (TV / Downloader) */
.janela-fundo {
  position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center;
  padding: 16px; background: rgba(5, 8, 16, .82);
}
.janela {
  width: min(980px, 100%); max-height: 100%; overflow-y: auto; padding: 28px 32px;
  border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line);
}
.janela h2 { margin: 0 0 4px; font-size: 1.6rem; }
.janela-dica { margin: 0 0 18px; color: var(--muted); }
.janela-acoes { display: flex; justify-content: flex-end; gap: 12px; margin-top: 20px; }
.janela .btn:focus, .link-ajuda:focus { outline: 3px solid var(--accent-2); outline-offset: 3px; }

.passos-tv { list-style: none; counter-reset: passo; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.passos-tv li {
  counter-increment: passo; display: grid; gap: 10px; align-content: start; padding: 16px;
  border-radius: 12px; background: var(--bg); border: 1px solid var(--line);
}
.passos-tv p { margin: 0; font-size: 1.05rem; }
.passos-tv p::before {
  content: counter(passo); display: inline-grid; place-items: center; width: 28px; height: 28px; margin-right: 8px;
  border-radius: 50%; background: var(--gradient); color: #fff; font-weight: 800; font-size: .9rem;
}
/* Desenho simplificado da janela que o Android mostra */
.tela-falsa {
  display: grid; gap: 8px; padding: 12px 14px; border-radius: 8px;
  background: #2a2f3a; color: #e6e9ef; font-size: .9rem;
}
.tela-falsa small { color: #aab1c0; }
.falsa-botoes { display: flex; justify-content: flex-end; gap: 14px; }
.falsa-botoes i { font-style: normal; font-weight: 700; color: #aab1c0; padding: 2px 8px; border-radius: 6px; }
.falsa-botoes i.destaque { color: #fff; background: rgba(34, 211, 238, .22); outline: 2px solid var(--accent-2); }
.falsa-chave { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.chave-ligada {
  position: relative; width: 40px; height: 22px; border-radius: 999px; background: var(--accent-2);
  outline: 2px solid var(--accent-2); outline-offset: 3px;
}
.chave-ligada::after { content: ''; position: absolute; top: 3px; right: 3px; width: 16px; height: 16px; border-radius: 50%; background: #fff; }

.passos-lista { margin: 0; padding-left: 22px; display: grid; gap: 12px; font-size: 1.05rem; }
.codigo-grande {
  display: block; width: fit-content; margin: 10px 0 2px; padding: 10px 18px; border-radius: 10px;
  background: var(--bg); border: 1px solid var(--line); font-size: 1.6rem; font-weight: 800; letter-spacing: .04em;
}

/* Perguntas */
details { border-bottom: 1px solid var(--line); padding: 18px 4px; }
summary { cursor: pointer; font-weight: 600; font-size: 1.05rem; }
details p { color: var(--muted); margin: 10px 0 0; }

/* Rodapé */
.rodape { padding: 48px 0; border-top: 1px solid var(--line); }
.rodape-conteudo { display: grid; justify-items: center; gap: 12px; text-align: center; }
.rodape p { margin: 0; color: var(--muted); }
.rodape small { color: var(--muted); }

@media (max-width: 900px) {
  .hero-grade { grid-template-columns: 1fr; }
  .passos, .recursos, .downloads, .passos-tv { grid-template-columns: 1fr; }
  .caixa-planos { padding: 16px; }
  .nav-links { display: none; }
  .hero { padding: 48px 0 64px; }
  .secao { padding: 64px 0; }
}