/* HExD — Homo Ex Data · sistema visual
   Paleta oficial (hexd-brand-assets/ICONOGRAPHY.md): Ink, Paper, Acid */
:root {
  --ink: #0b0d0c;
  --paper: #f3f1e9;
  --acid: #c7ff2e;
  --line: #0b0d0c2e;
  --muted: #63665f;
  --body: #454842;
  --font-sans: Arial, Helvetica, sans-serif;
  --font-serif: Georgia, serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
svg { flex: none; }

/* Header */
.site-header {
  position: relative;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 78px;
  padding: 0 3.5vw;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .02em;
}
.brand-mark {
  display: grid;
  place-items: center;
  min-width: 46px;
  height: 33px;
  padding: 0 7px;
  background: var(--ink);
  color: var(--acid);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: -.04em;
}
nav { display: flex; gap: 32px; font-size: 14px; }
nav a { transition: opacity .2s; }
nav a:hover { opacity: .5; }

/* Eyebrows */
.hero-index,
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
}
.eyebrow { margin: 0; }

/* Hero */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 78px);
  padding: 5vh 3.5vw 0;
  overflow: hidden;
}
.hero-index { margin: 0; }
.hero h1 {
  max-width: 1400px;
  margin: 12vh 0 5vh;
  font-size: clamp(3.5rem, 9.4vw, 10rem);
  font-weight: 800;
  line-height: .86;
  letter-spacing: -.075em;
}
.hero h1 em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
}
.hero-foot {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  gap: 30px;
  margin-top: auto;
  padding-bottom: 5vh;
}
.hero-foot p {
  max-width: 480px;
  margin: 0;
  font-size: clamp(1rem, 1.4vw, 1.3rem);
  line-height: 1.45;
}
.circle-link {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin-left: auto;
  border: 1px solid var(--ink);
  border-radius: 50%;
  transition: all .25s;
}
.circle-link:hover {
  background: var(--ink);
  color: var(--acid);
  transform: rotate(-8deg);
}
.signal {
  position: absolute;
  right: -3vw;
  bottom: -1.8vw;
  display: flex;
  align-items: center;
  gap: 1vw;
  color: var(--acid);
  font-size: clamp(5rem, 16vw, 18rem);
  font-weight: 900;
  letter-spacing: -.08em;
  mix-blend-mode: multiply;
  opacity: .9;
  pointer-events: none;
  user-select: none;
}
.signal i {
  width: 1.6vw;
  height: 1.6vw;
  background: var(--ink);
  border-radius: 50%;
}

/* Manifesto */
.manifesto {
  display: grid;
  grid-template-columns: 1fr 2.2fr;
  gap: 5vw;
  padding: 11vw 3.5vw;
  background: var(--ink);
  color: var(--paper);
}
.manifesto .eyebrow { color: var(--acid); }
.manifesto h2 {
  margin: 0 0 7vw;
  font-family: var(--font-serif);
  font-size: clamp(2.7rem, 6vw, 6.4rem);
  font-weight: 400;
  line-height: .95;
  letter-spacing: -.045em;
}
.manifesto div > p {
  max-width: 780px;
  padding-top: 24px;
  border-top: 1px solid #ffffff40;
  font-size: clamp(1.15rem, 2vw, 1.8rem);
  line-height: 1.45;
}

/* Capabilities */
.capabilities { padding: 9vw 3.5vw; }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 5vw;
}
.section-head > p:last-child { margin: 0; color: var(--muted); }
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
}
.cap-grid article {
  display: flex;
  flex-direction: column;
  min-height: 400px;
  padding: 24px 26px 30px 0;
  border-right: 1px solid var(--line);
}
.cap-grid article + article { padding-left: 26px; }
.cap-grid article:last-child { border-right: 0; }
.cap-top {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-family: var(--font-mono);
}
.cap-top svg { width: 26px; height: 26px; color: var(--ink); }
.cap-grid h3 {
  margin: auto 0 18px;
  font-size: clamp(1.8rem, 3vw, 3.3rem);
  line-height: 1;
  letter-spacing: -.05em;
}
.cap-grid p {
  max-width: 370px;
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

/* App listing (LimpaZap) */
.app-listing {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  align-items: end;
  gap: 7vw;
  margin: 0 3.5vw 9vw;
  padding: 3.5vw;
  background: var(--ink);
  color: var(--paper);
}
.app-listing h2 {
  margin: 28px 0;
  font-size: clamp(3rem, 7vw, 7rem);
  line-height: .9;
  letter-spacing: -.07em;
}
.app-listing p:not(.eyebrow) {
  max-width: 640px;
  color: #b9bdb5;
  font-size: 18px;
  line-height: 1.6;
}
.app-listing .eyebrow { color: var(--acid); }
.app-links {
  display: flex;
  flex-direction: column;
  border-top: 1px solid #ffffff4d;
}
.app-links a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid #ffffff4d;
  font-weight: 700;
  transition: color .2s;
}
.app-links a:hover { color: var(--acid); }
.app-links svg { width: 18px; }

/* Product band */
.product-band {
  display: grid;
  grid-template-columns: 1.5fr 1fr auto;
  align-items: end;
  gap: 6vw;
  padding: 7vw 3.5vw;
  background: var(--acid);
}
.product-band h2 {
  margin: 30px 0 0;
  font-size: clamp(2.5rem, 5vw, 5rem);
  line-height: .95;
  letter-spacing: -.06em;
}
.product-band > p { margin: 0; font-size: 18px; line-height: 1.5; }
.text-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 0 8px;
  border-bottom: 2px solid var(--ink);
  font-weight: 700;
  white-space: nowrap;
}
.text-link svg { width: 18px; }

/* Footer */
footer {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr auto;
  align-items: start;
  gap: 30px;
  padding: 55px 3.5vw 28px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}
footer p { margin: 0 0 8px; color: var(--muted); }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.copyright { align-self: end; }

/* Legal / support pages */
.legal-page { min-height: 100vh; }
.legal-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 10vw 28px 12vw;
}
.legal-wrap .eyebrow { color: var(--muted); }
.legal-wrap h1 {
  margin: 28px 0 70px;
  font-family: var(--font-serif);
  font-size: clamp(3.2rem, 7vw, 6rem);
  font-weight: 400;
  line-height: .95;
  letter-spacing: -.05em;
}
.legal-wrap h2 { margin: 48px 0 14px; font-size: 1.35rem; }
.legal-wrap p,
.legal-wrap li {
  color: var(--body);
  font-size: 1.05rem;
  line-height: 1.7;
}
.legal-wrap ul { padding-left: 22px; }
.legal-wrap a { text-decoration: underline; text-underline-offset: 3px; }
.legal-wrap code {
  font-family: var(--font-mono);
  font-size: .9em;
  padding: 1px 5px;
  background: #0b0d0c12;
}
.contact-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-top: 55px;
  padding: 32px;
  background: var(--acid);
}
.contact-card h2 { margin: 0 0 6px; }
.contact-card p { margin: 0; color: var(--ink); }
.contact-card a {
  padding: 16px 20px;
  background: var(--ink);
  color: var(--paper);
  font-weight: 700;
  white-space: nowrap;
  text-decoration: none;
}

/* Responsive */
@media (max-width: 760px) {
  .site-header { padding: 0 20px; }
  nav { gap: 0; }
  nav a:not(:last-child) { display: none; }
  .hero { min-height: 750px; padding: 40px 20px 0; }
  .hero h1 { margin-top: 14vh; }
  .hero-foot { align-items: flex-start; }
  .circle-link { flex: none; width: 52px; height: 52px; }
  .signal { right: -6vw; bottom: 6vh; }
  .manifesto { grid-template-columns: 1fr; gap: 55px; padding: 90px 20px; }
  .manifesto h2 { margin-bottom: 65px; }
  .capabilities { padding: 80px 20px; }
  .section-head { display: block; margin-bottom: 50px; }
  .section-head > p:last-child { margin-top: 15px; }
  .cap-grid { grid-template-columns: 1fr; }
  .cap-grid article,
  .cap-grid article + article {
    min-height: 300px;
    padding: 24px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .app-listing { grid-template-columns: 1fr; gap: 40px; margin: 0 20px 80px; padding: 55px 25px; }
  .product-band { grid-template-columns: 1fr; gap: 50px; padding: 80px 20px; }
  footer { grid-template-columns: 1fr 1fr; padding: 45px 20px 25px; }
  .footer-brand { grid-column: 1 / -1; }
  .contact-card { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .circle-link, nav a, .app-links a { transition: none; }
}