/* Outer Skull — folha única para as três páginas.
   Sem build, sem dependências, sem JavaScript.
   O fundo é preto puro de propósito: o logotipo é um PNG opaco, e qualquer
   outro tom revelaria a moldura quadrada dele. */

:root {
  --bg: #000000;
  --surface: #0b0d12;
  --border: #1d2230;
  --text: #e8eaf0;
  --muted: #9aa3b8;
  --cyan: #22d3ee;
  --blue: #5b7cfa;
  --magenta: #d946ef;
  --measure: 46rem;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 16px;
}

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

.hero {
  text-align: center;
  padding: 72px 0 8px;
}

.hero img {
  width: 148px;
  height: 148px;
  display: block;
  margin: 0 auto 8px;
}

h1 {
  font-size: clamp(2rem, 7vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  background: linear-gradient(100deg, var(--cyan), var(--blue) 45%, var(--magenta));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline {
  color: var(--muted);
  font-size: 1.1rem;
  margin: 0 auto;
  max-width: 34rem;
}

/* ---------- conteúdo ---------- */

main {
  padding: 40px 0 8px;
}

h2 {
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  margin: 44px 0 12px;
  padding-top: 4px;
}

h3 {
  font-size: 1.05rem;
  margin: 28px 0 8px;
  color: var(--text);
}

p,
li {
  color: #cfd5e4;
}

a {
  color: var(--cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--magenta);
}

ul {
  padding-left: 1.2em;
}

li {
  margin: 6px 0;
}

li strong {
  color: var(--text);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  margin: 28px 0;
}

.card p:first-child {
  margin-top: 0;
}

.card p:last-child {
  margin-bottom: 0;
}

.cta {
  display: inline-block;
  margin: 8px 0 4px;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 600;
  color: #05070d;
  text-decoration: none;
  background: linear-gradient(100deg, var(--cyan), var(--blue) 55%, var(--magenta));
}

.cta:hover {
  color: #05070d;
  filter: brightness(1.08);
}

.note {
  color: var(--muted);
  font-size: 0.92rem;
}

.updated {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0 0 8px;
}

/* ---------- rodapé ---------- */

footer {
  border-top: 1px solid var(--border);
  margin-top: 64px;
  padding: 28px 0 56px;
  text-align: center;
  color: var(--muted);
  font-size: 0.92rem;
}

footer a {
  margin: 0 10px;
  white-space: nowrap;
}

/* ---------- navegação de volta ---------- */

.back {
  display: inline-block;
  margin: 32px 0 0;
  font-size: 0.95rem;
}

@media (max-width: 480px) {
  body {
    font-size: 16px;
  }
  .hero {
    padding-top: 48px;
  }
  .hero img {
    width: 116px;
    height: 116px;
  }
  .card {
    padding: 16px 18px;
  }
}