:root {
  --navy: #060e20;
  --panel: #0c1730;
  --line: #1c3058;
  --teal: #00c3c7;
  --ink: #e8f0fa;
  --sub: #93a6c8;
  --ecg: #39e75f;
  --warn: #f5b942;
  --radius: 1.25rem;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(0, 195, 199, 0.16), transparent 60%),
    radial-gradient(700px 380px at -10% 20%, rgba(40, 174, 224, 0.1), transparent 55%),
    var(--navy);
  color: var(--ink);
  line-height: 1.55;
}

a { color: inherit; }

img, svg { display: block; }

.wrap {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.topo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 0;
}

.marca {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.marca strong {
  display: block;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

.marca span {
  display: block;
  color: var(--sub);
  font-size: 0.78rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 0.85rem;
  text-decoration: none;
  color: var(--sub);
  border-radius: 999px;
}

.nav a:hover { color: var(--ink); }

.btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.btn:focus-visible,
.nav a:focus-visible,
.marca:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

.btn-primario {
  background: linear-gradient(180deg, #2ee0e3, var(--teal));
  color: #042226;
  box-shadow: 0 8px 24px rgba(0, 195, 199, 0.28);
}

.btn-primario:hover { transform: translateY(-1px); }

.btn-primario:active { transform: scale(0.98); }

.btn-fantasma {
  border-color: var(--line);
  color: var(--ink);
  background: rgba(12, 23, 48, 0.7);
}

.btn-fantasma:hover { border-color: var(--teal); }

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
  padding: 2.2rem 0 3.5rem;
}

.selo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ecg);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.selo i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ecg);
  box-shadow: 0 0 0 6px rgba(57, 231, 95, 0.12);
}

h1 {
  margin: 0.7rem 0 0.8rem;
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
  max-width: 12ch;
}

.lead {
  max-width: 42ch;
  color: var(--sub);
  font-size: 1.12rem;
}

.acoes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

.nota {
  margin-top: 1rem;
  color: var(--sub);
  font-size: 0.88rem;
}

.painel {
  background: linear-gradient(180deg, rgba(14, 28, 56, 0.95), rgba(8, 16, 34, 0.95));
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.painel header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
  color: var(--sub);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ecg {
  height: 92px;
  width: 100%;
}

.sinais {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
  padding: 0.9rem;
}

.sinais div {
  background: rgba(6, 14, 32, 0.55);
  border-radius: 0.9rem;
  padding: 0.75rem;
}

.sinais small {
  display: block;
  color: var(--sub);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.sinais strong {
  display: block;
  margin-top: 0.2rem;
  font-size: 1.35rem;
  font-variant-numeric: tabular-nums;
}

.sinais strong.ok { color: var(--ecg); }
.sinais strong.pa { color: #ff8d8d; }
.sinais strong.co2 { color: var(--warn); }

.secao { padding: 1rem 0 3.2rem; }

.secao h2 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
}

.secao > .wrap > p { color: var(--sub); max-width: 62ch; }

.grade {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.4rem;
}

.cartao, .item {
  background: rgba(12, 23, 48, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.3rem 1.35rem;
}

.cartao:hover, .item:hover {
  border-color: rgba(0, 195, 199, 0.55);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.cartao h3, .item h3 { margin: 0.35rem 0 0.4rem; font-size: 1.25rem; }

.cartao p, .item p { margin: 0; color: var(--sub); }

.etiqueta {
  color: var(--teal);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.itens {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
  margin-top: 1.3rem;
}

.item strong { color: var(--ink); }

.rodape {
  border-top: 1px solid var(--line);
  padding: 1.4rem 0 2rem;
  color: var(--sub);
  font-size: 0.9rem;
}

.rodape .wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.rodape nav { display: flex; gap: 1rem; }

.rodape a { color: var(--ink); }

.pagina {
  padding: 1rem 0 3rem;
  max-width: 68ch;
}

.pagina h1 { font-size: clamp(2rem, 4vw, 3rem); max-width: none; }

.pagina h2 { margin-top: 1.8rem; font-size: 1.2rem; }

.pagina p, .pagina li { color: var(--sub); }

@media (max-width: 860px) {
  .hero, .grade, .itens { grid-template-columns: 1fr; }
  .nav a.escondido { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cartao, .item, .btn-primario { transition: none; }
  .ecg { animation: none; }
}