:root {
  --bg: #070a12;
  --bg-card: #0e131f;
  --linha: #1d2534;
  --texto: #e7edf7;
  --texto-fraco: #8f9bb3;
  --acento: #4cc9f0;
  --acento-2: #7b6cf6;
  --ok: #3ddc97;
  --max: 1120px;
  --sans: "IBM Plex Sans", -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --hud: "Chakra Petch", "IBM Plex Sans", sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--texto);
  font: 400 17px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  padding-top: env(safe-area-inset-top, 0px);
  overflow-x: hidden;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--acento); outline-offset: 4px; }

/* fundo: grade fina + brilho */
.grade {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(900px 600px at 78% 12%, rgba(76, 201, 240, .10), transparent 60%),
    radial-gradient(700px 500px at 8% 70%, rgba(123, 108, 246, .08), transparent 60%),
    linear-gradient(rgba(29, 37, 52, .45) 1px, transparent 1px) 0 0 / 48px 48px,
    linear-gradient(90deg, rgba(29, 37, 52, .45) 1px, transparent 1px) 0 0 / 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 85%);
}
#mira { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 30; pointer-events: none; }

.rotulo {
  font: 600 12px/1.2 var(--hud);
  letter-spacing: .22em;
  color: var(--acento);
  margin: 0 0 30px;
  display: flex; align-items: center; gap: 12px;
}
.rotulo::after { content: ""; height: 1px; width: 120px; background: linear-gradient(90deg, var(--acento), transparent); opacity: .6; }

/* ---------- topo ---------- */
.topo {
  max-width: var(--max);
  margin: 0 auto;
  padding: 26px 24px;
  display: flex; align-items: center; gap: 16px 28px;
  position: relative; z-index: 20;
}
.marca { font-weight: 600; font-size: 20px; letter-spacing: -.02em; text-decoration: none; margin-right: auto; }
.marca span { color: var(--acento); }
.status-topo {
  display: flex; align-items: center; gap: 8px;
  font: 500 12px var(--mono); color: var(--texto-fraco); letter-spacing: .06em;
  font-variant-numeric: tabular-nums;
}
.status-topo .sep { opacity: .5; }
.ponto {
  width: 8px; height: 8px; border-radius: 50%; background: var(--ok); display: inline-block; flex: none;
  box-shadow: 0 0 10px var(--ok);
}

/* ---------- hero ---------- */
main { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.hero {
  display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 48px;
  padding: 56px 0 150px;
}
h1 {
  font-size: clamp(40px, 5.6vw, 68px); line-height: 1.03; letter-spacing: -.035em;
  font-weight: 600; margin: 0 0 30px; text-wrap: balance;
}
.selo { display: flex; align-items: center; gap: 10px; color: var(--texto-fraco); font-size: 14px; margin: 0; }
.selo strong { color: var(--texto); font-weight: 600; }

/* ---------- HUD ---------- */
.hud {
  --a: 0;           /* ativação 0..1, calculada pela proximidade do cursor */
  --tx: 0px; --ty: 0px;
  position: relative; display: block;
  width: var(--size); aspect-ratio: 1; max-width: 100%;
  flex: none; justify-self: center;
  color: inherit; text-decoration: none;
  border-radius: 50%;
}
a.hud, .hud[tabindex] { cursor: pointer; }
.hud-aneis {
  position: absolute; inset: 0; pointer-events: none;
  transform: translate(var(--tx), var(--ty)) scale(calc(1 + var(--a) * .04));
  filter: drop-shadow(0 0 calc(4px + var(--a) * 14px) rgba(76, 201, 240, calc(.25 + var(--a) * .45)));
}
.hud-aneis svg { width: 100%; height: 100%; display: block; overflow: visible; }
.hud-aneis .anel { transform-box: view-box; transform-origin: 100px 100px; }
.hud-aneis .t { stroke: var(--acento); fill: none; }
.hud-aneis .v { stroke: var(--acento-2); fill: none; }
.hud-aneis .f { stroke: var(--linha); fill: none; }
.hud-aneis .txt { fill: var(--acento); font: 600 7.2px var(--hud); opacity: calc(.45 + var(--a) * .55); }
.hud-aneis .ponteiro { stroke: var(--acento); stroke-linecap: round; }
.hud-aneis .liga { opacity: calc(.35 + var(--a) * .65); }
.hud-aneis .desenha { stroke-dasharray: var(--len); stroke-dashoffset: var(--len); animation: desenha 1.2s cubic-bezier(.2, .7, .2, 1) forwards; animation-delay: calc(var(--i, 0) * 90ms + 150ms); }
@keyframes desenha { to { stroke-dashoffset: 0; } }

.hud-centro {
  position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 2px;
  text-align: center; pointer-events: none;
  transform: translate(calc(var(--tx) * .5), calc(var(--ty) * .5));
}
.monograma {
  font: 600 clamp(40px, 7vw, 64px)/1 var(--hud); letter-spacing: .04em;
  color: var(--texto); text-shadow: 0 0 calc(8px + var(--a) * 22px) rgba(76, 201, 240, .7);
}
.hud-mini { font: 500 11px var(--mono); letter-spacing: .12em; color: var(--acento); opacity: calc(.55 + var(--a) * .45); font-variant-numeric: tabular-nums; }
.hud-valor { font: 500 30px/1 var(--mono); font-variant-numeric: tabular-nums; color: var(--texto); }
.hud-unid { font: 500 10.5px var(--mono); letter-spacing: .08em; color: var(--texto-fraco); text-transform: uppercase; }
.hud-icone { font: 600 26px/1 var(--hud); color: var(--acento); }
.hud-icone.ok { color: var(--ok); }

/* colchetes de mira: se abrem com a ativação */
.bk {
  position: absolute; width: 16px; height: 16px; border: 1.5px solid var(--acento); pointer-events: none;
  opacity: calc(.2 + var(--a) * .8);
  --o: calc(-6px - var(--a) * 12px);
}
.bk.tl { top: var(--o); left: var(--o); border-right: 0; border-bottom: 0; }
.bk.tr { top: var(--o); right: var(--o); border-left: 0; border-bottom: 0; }
.bk.bl { bottom: var(--o); left: var(--o); border-right: 0; border-top: 0; }
.bk.br { bottom: var(--o); right: var(--o); border-left: 0; border-top: 0; }

/* órbitas: itens de menu que saem do centro do HUD quando ele acorda */
.orbitas { position: absolute; inset: 0; pointer-events: none; }
.orbita {
  position: absolute; left: 50%; top: 50%;
  font: 600 12px/1 var(--hud); letter-spacing: .16em; white-space: nowrap;
  color: var(--acento); text-decoration: none;
  padding: 8px 12px 7px; border: 1px solid rgba(76, 201, 240, .55); border-radius: 3px;
  background: rgba(7, 10, 18, .88);
  box-shadow: 0 0 18px rgba(76, 201, 240, .18), inset 0 0 12px rgba(76, 201, 240, .08);
  opacity: 0; pointer-events: none;
  transform: translate(-50%, -50%) rotate(var(--ang)) translateX(calc(var(--r) * .35)) rotate(calc(-1 * var(--ang))) scale(.85);
  transition: transform .45s cubic-bezier(.2, .8, .2, 1), opacity .3s, background .2s, color .2s;
  transition-delay: calc(var(--i) * 45ms);
}
.orbita::before { content: ""; position: absolute; left: -4px; top: 50%; width: 5px; height: 5px; margin-top: -2.5px; border-radius: 50%; background: var(--acento); box-shadow: 0 0 8px var(--acento); }
.acordado > .orbitas .orbita, .orbita:focus-visible {
  opacity: 1; pointer-events: auto;
  transform: translate(-50%, -50%) rotate(var(--ang)) translateX(var(--r)) rotate(calc(-1 * var(--ang))) scale(1);
}
a.orbita:hover, a.orbita:focus-visible, button.orbita:hover, button.orbita:focus-visible { background: var(--acento); color: #04121a; }
button.orbita { font-family: var(--hud); cursor: pointer; }
.orbita.on { border-color: var(--acento); background: rgba(76, 201, 240, .18); color: var(--texto); }
.idioma-atual { font: 600 12px var(--hud); letter-spacing: .08em; color: var(--acento); }
:root[data-idioma="zh"] body { font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", var(--sans); }
:root[data-idioma="zh"] h1 { letter-spacing: .02em; }

/* HUD de menu no topo */
.hud-menu { justify-self: auto; }
.menu-icone { width: 16px; height: 10px; border-top: 1.5px solid var(--acento); border-bottom: 1.5px solid var(--acento); position: relative; }
.menu-icone::after { content: ""; position: absolute; left: 0; right: 0; top: 50%; margin-top: -.75px; height: 1.5px; background: var(--acento); }
/* no menu do topo os itens descem em lista, alinhados à direita do ícone */
.orbitas.lista .orbita {
  left: auto; right: 4px; top: calc(100% + 10px + var(--i) * 42px);
  font-size: 11.5px; width: max-content; min-width: 118px; max-width: none; text-align: right; overflow: visible;
  transform: translateX(14px) scale(.96);
}
.orbitas.lista .orbita::before { left: auto; right: -4px; }
.acordado > .orbitas.lista .orbita, .orbitas.lista .orbita:focus-visible { transform: none; }
.orbitas.lista::before {
  content: ""; position: absolute; right: 25px; top: 100%; width: 1px; height: 0;
  background: linear-gradient(var(--acento), transparent); transition: height .4s ease;
}
.acordado > .orbitas.lista::before { height: 176px; }

/* ---------- sistemas: HUD + leitura, sem caixas nem botões ---------- */
.secao { padding: 20px 0 110px; }
.sistemas { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 56px 32px; }
.sistema { display: flex; flex-direction: column; align-items: flex-start; gap: 26px; }
.sistema .hud { justify-self: start; margin: 18px 0 0 18px; }
.callout { position: relative; width: 100%; padding-left: 16px; border-left: 1px solid var(--linha); transition: border-color .3s; }
.acordado .callout, .sistema.acordado .callout { border-left-color: var(--acento); }
.callout-titulo { display: block; font: 600 13px var(--hud); letter-spacing: .16em; color: var(--texto); margin-bottom: 12px; }
.leitura { margin: 0; display: grid; gap: 6px; font: 400 13.5px var(--mono); }
.leitura div { display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px dashed var(--linha); padding-bottom: 6px; }
.leitura dt { color: var(--texto-fraco); }
.leitura dd { margin: 0; color: var(--acento); text-align: right; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.acordado .leitura dd { color: var(--texto); }
/* texto que só existe na tela enquanto o HUD está acordado */
.revelado {
  margin: 0; max-height: 0; opacity: 0; overflow: hidden;
  font: 400 14px/1.55 var(--mono); color: var(--texto-fraco);
  transition: max-height .4s ease, opacity .3s, margin .4s;
}
.acordado .revelado { max-height: 120px; opacity: 1; margin-top: 12px; }
.acao { display: block; font: 600 11.5px var(--hud); letter-spacing: .16em; color: var(--acento); }

/* ---------- artigos ---------- */
.artigos-grade { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 48px; align-items: start; }
.artigos-lado { position: sticky; top: 32px; display: grid; gap: 26px; justify-items: center; }
.artigos-lado .leitura { width: 100%; }
.posts { display: grid; gap: 14px; }
.post {
  display: block; text-decoration: none;
  background: var(--bg-card); border: 1px solid var(--linha); border-radius: 12px; padding: 20px 22px;
  transition: border-color .2s, transform .2s;
}
.post:hover { border-color: var(--acento); transform: translateY(-2px); }
.post h3 { margin: 0 0 6px; font-size: 19px; letter-spacing: -.01em; }
.post p { margin: 0 0 10px; color: var(--texto-fraco); font-size: 15.5px; }
.post time { font: 500 12.5px var(--mono); color: var(--acento); letter-spacing: .04em; }
.estado { margin: 0; font: 400 13.5px var(--mono); color: var(--texto-fraco); letter-spacing: .04em; }
.estado::before { content: "> "; color: var(--acento); }

/* ---------- rodapé ---------- */
.rodape {
  max-width: var(--max); margin: 0 auto; padding: 44px 24px calc(56px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--linha);
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px;
}
.rodape-hud { display: flex; align-items: center; gap: 30px; }
.rodape-hud .leitura { flex: 1; }
code { font-family: var(--mono); font-size: 13px; }

/* ---------- responsivo ---------- */
@media (max-width: 940px) {
  .hero { grid-template-columns: 1fr; gap: 20px; padding: 20px 0 130px; }
  .hud-nucleo { order: -1; --size: min(300px, 70vw) !important; margin-bottom: 60px; }
  .sistemas { grid-template-columns: 1fr; gap: 64px; }
  .sistema { flex-direction: row; align-items: center; }
  .sistema .hud { margin: 0; }
  .callout { flex: 1; }
  .artigos-grade { grid-template-columns: 1fr; }
  .artigos-lado { position: static; grid-template-columns: auto 1fr; align-items: center; justify-items: start; }
  .artigos-lado .hud { --size: 150px !important; }
  .rodape { grid-template-columns: 1fr; }
  .status-topo { display: none; }
}
@media (max-width: 560px) {
  .sistema { flex-direction: column; align-items: flex-start; }
  .sistema .hud { align-self: center; }
  .artigos-lado { grid-template-columns: 1fr; justify-items: center; }
  .rodape-hud { gap: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hud-aneis .desenha { animation: none; stroke-dashoffset: 0; }
  .orbita, .revelado, .post { transition: none; }
}