/* Nano Assistente — base do site. Editorial, fundo claro único, 2 famílias, cantos retos. */
:root {
  --tinta: #121417;
  --cinza: #5b6168;
  --fio: #e3e6ea;
  --fundo: #ffffff;
  --acento: #0e7c66;      /* verde-petróleo: ação/execução */
  --acento-2: #1f5fbf;    /* azul: confiança/trilha */
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--fundo); color: var(--tinta);
  font-family: Geist, "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  font-size: 17px; line-height: 1.55;
}
h1, h2 { font-family: "Plus Jakarta Sans", Geist, system-ui, sans-serif; font-weight: 700; letter-spacing: -.02em; margin: 0; }
p { margin: 0; }

.topo {
  max-width: 1040px; margin: 0 auto; padding: 22px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  border-bottom: 1px solid var(--fio);
}
.marca { text-decoration: none; color: var(--tinta); font-family: "Plus Jakarta Sans", system-ui, sans-serif; font-weight: 700; font-size: 20px; letter-spacing: -.02em; }
.marca-nano { color: var(--acento); }
.marca-assistente { margin-left: 4px; }
.selo { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--cinza); border: 1px solid var(--fio); padding: 6px 10px; }

.principal { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
.hero { padding: 72px 0 40px; max-width: 760px; }
.hero h1 { font-size: clamp(1.9rem, 4.6vw, 3.4rem); line-height: 1.08; }
.hl { font-weight: inherit; background: linear-gradient(90deg, var(--acento), var(--acento-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { margin-top: 20px; font-size: 1.15rem; color: var(--cinza); max-width: 620px; }

.funcoes { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--fio); border-bottom: 1px solid var(--fio); margin-top: 24px; }
.funcoes article { padding: 28px 20px 28px 0; border-right: 1px solid var(--fio); }
.funcoes article + article { padding-left: 20px; }
.funcoes article:last-child { border-right: 0; }
.funcoes h2 { font-size: 1.05rem; margin-bottom: 8px; }
.funcoes p { color: var(--cinza); font-size: .98rem; }

.regras { padding: 40px 0 72px; }
.regras ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 40px; max-width: 860px; }
.regras li { position: relative; padding-left: 22px; }
.regras li::before { content: ""; position: absolute; left: 0; top: .62em; width: 10px; height: 2px; background: var(--acento); }

.rodape { border-top: 1px solid var(--fio); }
.rodape-linha { max-width: 1040px; margin: 0 auto; padding: 22px 16px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--cinza); font-size: .92rem; }
/* crédito Infinniti: padrão da casa (texto + logo SVG como máscara, sem WhatsApp, sem URL escrita) */
.footer-dev { display: inline-flex; align-items: center; gap: 8px; }
.footer-dev .dev-logo {
  display: inline-block; width: 110px; height: 24px; vertical-align: middle;
  background: #9aa1a8;
  -webkit-mask: url(../assets/infinniti.svg) center / contain no-repeat;
          mask: url(../assets/infinniti.svg) center / contain no-repeat;
  transition: background-color .25s;
}
.footer-dev .dev-logo:hover, .footer-dev .dev-logo:focus-visible { background: var(--acento); }

@media (max-width: 900px) {
  .funcoes { grid-template-columns: repeat(2, 1fr); }
  .funcoes article { border-right: 0; border-bottom: 1px solid var(--fio); padding-left: 0; }
  .funcoes article:nth-child(odd) { border-right: 1px solid var(--fio); padding-right: 20px; }
  .funcoes article:nth-child(even) { padding-left: 20px; }
  .funcoes article:nth-last-child(-n+2) { border-bottom: 0; }
}
@media (max-width: 560px) {
  .hero { padding: 48px 0 28px; }
  .funcoes { grid-template-columns: 1fr; }
  .funcoes article, .funcoes article:nth-child(odd), .funcoes article:nth-child(even) { border-right: 0; padding: 20px 0; border-bottom: 1px solid var(--fio); }
  .funcoes article:last-child { border-bottom: 0; }
  .regras ul { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }