:root {
  --papel: #0a1526;
  --painel: #0f1f38;
  --campo: #142a48;
  --tinta: #eef3f9;
  --tinta-media: #b7c4d6;
  --tinta-fraca: #7f90a7;
  --linha: #1e3352;
  --linha-forte: #2c4568;
  --indigo: #7fb2ff;
  --indigo-solido: #2f6fd6;
  --indigo-solido-hover: #3e7de3;
  --grad-a: #2f6fd6;
  --grad-b: #22b8cf;
  --gradiente: linear-gradient(135deg, var(--grad-a), var(--grad-b));
  --raio: 4px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--tinta);
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background-color: var(--papel);
  background-image: radial-gradient(1100px 600px at 12% -8%, rgba(47, 111, 214, 0.32), transparent 60%),
    radial-gradient(900px 520px at 105% 8%, rgba(34, 184, 207, 0.16), transparent 55%),
    radial-gradient(800px 420px at 50% 105%, rgba(47, 111, 214, 0.14), transparent 60%);
  background-repeat: no-repeat;
  background-attachment: fixed;
}

a {
  color: inherit;
}

/* ---------------------------------------------------------------- topo */

.topo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 32px;
  border-bottom: 1px solid var(--linha);
  position: sticky;
  top: 0;
  background: rgba(10, 21, 38, 0.75);
  backdrop-filter: blur(10px);
  z-index: 10;
}

.marca {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.marca-nome {
  font-family: "IBM Plex Serif", serif;
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.marca-tag {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--tinta-fraca);
  border: 1px solid var(--linha-forte);
  border-radius: var(--raio);
  padding: 1px 6px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14.5px;
}

.nav a:not(.botao) {
  color: var(--tinta-media);
  text-decoration: none;
  transition: color 0.12s ease;
}

.nav a:not(.botao):hover {
  color: var(--tinta);
}

.botao {
  display: inline-block;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  color: var(--tinta);
  background: var(--painel);
  border: 1px solid var(--linha-forte);
  border-radius: var(--raio);
  padding: 8px 16px;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.botao:hover {
  background: var(--campo);
  border-color: var(--tinta-fraca);
}

.botao-primario {
  background: var(--gradiente);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 6px 20px -8px rgba(47, 111, 214, 0.6);
}

.botao-primario:hover {
  filter: brightness(1.08);
  box-shadow: 0 10px 28px -8px rgba(34, 184, 207, 0.55);
  transform: translateY(-1px);
}

.botao-grande {
  padding: 12px 24px;
  font-size: 15.5px;
}

/* ---------------------------------------------------------------- hero */

.hero {
  padding: 104px 32px 80px;
  display: flex;
  justify-content: center;
  position: relative;
}

.hero-texto {
  max-width: 720px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.hero-texto > * {
  animation: subir 0.6s ease both;
}
.hero-texto > *:nth-child(2) {
  animation-delay: 0.06s;
}
.hero-texto > *:nth-child(3) {
  animation-delay: 0.12s;
}
.hero-texto > *:nth-child(4) {
  animation-delay: 0.18s;
}
.hero-texto > *:nth-child(5) {
  animation-delay: 0.24s;
}

@keyframes subir {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.etiqueta-topo {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--indigo);
}

.hero h1 {
  margin: 0;
  font-family: "IBM Plex Serif", serif;
  font-weight: 600;
  font-size: clamp(30px, 4.5vw, 46px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.hero h1 .destaque {
  background: var(--gradiente);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  margin: 0;
  font-size: 17px;
  color: var(--tinta-media);
  max-width: 58ch;
}

.hero-acoes {
  display: flex;
  gap: 12px;
  margin-top: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-nota {
  font-size: 13px;
  color: var(--tinta-fraca);
}

/* ---------------------------------------------------------------- seções */

.secao {
  padding: 64px 32px;
  max-width: 1040px;
  margin: 0 auto;
}

.secao h2 {
  font-family: "IBM Plex Serif", serif;
  font-size: 26px;
  font-weight: 600;
  margin: 0 0 32px;
  text-align: center;
}

.grade-passos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}

.passo {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 60%), var(--painel);
  border: 1px solid var(--linha);
  border-radius: 8px;
  padding: 22px 20px;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.passo::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--gradiente);
  opacity: 0;
  transition: opacity 0.18s ease;
}

.passo:hover {
  transform: translateY(-3px);
  border-color: var(--linha-forte);
  box-shadow: 0 16px 32px -20px rgba(47, 111, 214, 0.5);
}

.passo:hover::before {
  opacity: 1;
}

.passo-numero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradiente);
  color: #fff;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 12px;
  box-shadow: 0 4px 14px -4px rgba(47, 111, 214, 0.55);
}

.passo h3 {
  margin: 0 0 8px;
  font-size: 15.5px;
}

.passo p {
  margin: 0;
  font-size: 13.5px;
  color: var(--tinta-media);
  line-height: 1.55;
}

.grade-beneficios {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.beneficio {
  position: relative;
  padding: 4px 4px 4px 26px;
}

.beneficio::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  border-radius: 3px;
  background: var(--gradiente);
}

.beneficio-icone {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--indigo);
  background: linear-gradient(135deg, rgba(47, 111, 214, 0.18), rgba(34, 184, 207, 0.1));
  border: 1px solid var(--linha-forte);
  margin-bottom: 12px;
}

.beneficio-icone svg {
  width: 18px;
  height: 18px;
}

.beneficio h3 {
  margin: 0 0 8px;
  font-size: 15.5px;
}

.beneficio p {
  margin: 0;
  font-size: 13.5px;
  color: var(--tinta-media);
  line-height: 1.55;
}

.secao-cta {
  position: relative;
  text-align: center;
  background: linear-gradient(135deg, rgba(47, 111, 214, 0.18), rgba(34, 184, 207, 0.08)), var(--painel);
  border-radius: 10px;
  border: 1px solid var(--linha-forte);
  box-shadow: 0 24px 60px -32px rgba(47, 111, 214, 0.55);
  overflow: hidden;
}

.secao-cta h2 {
  position: relative;
}

.secao-cta p {
  position: relative;
  color: var(--tinta-media);
  max-width: 56ch;
  margin: 0 auto 20px;
}

.secao-cta .botao {
  position: relative;
}

/* ---------------------------------------------------------------- rodapé */

.rodape {
  padding: 32px;
  border-top: 1px solid var(--linha);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.rodape-links {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--tinta-fraca);
}

.rodape-nota {
  width: 100%;
  margin: 0;
  font-size: 11.5px;
  color: var(--tinta-fraca);
}

@media (max-width: 640px) {
  .nav {
    gap: 14px;
  }
  .nav a:not(.botao) {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}