/* ORBIAN v2 — sistema visual · Be.exe
   fundo: espaço profundo real (preto-azulado, sem verde)
   texto: contraste alto */

/* ---------- fontes locais (sem dependência externa) ---------- */
@font-face{font-family:"General Sans";src:url("fonts/GeneralSans-Regular.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"General Sans";src:url("fonts/GeneralSans-Medium.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:"General Sans";src:url("fonts/GeneralSans-Semibold.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Zodiak";src:url("fonts/Zodiak-LightItalic.woff2") format("woff2");font-weight:300;font-style:italic;font-display:swap}
@font-face{font-family:"Zodiak";src:url("fonts/Zodiak-Regular.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Zodiak";src:url("fonts/Zodiak-Italic.woff2") format("woff2");font-weight:400;font-style:italic;font-display:swap}
:root{
  --bg:#030508;
  --bg-2:#070b10;
  --surface:rgba(9,13,18,.86);
  --surface-solid:#0a0e13;
  --line:rgba(236,241,238,.11);
  --line-strong:rgba(236,241,238,.2);
  --ink:#f3f6f1;
  --muted:#b9c3bb;
  --faint:#87938c;
  --mint:#8fe6c9;
  --mint-strong:#aef2da;
  --mint-deep:#123128;
  --gold:#d7b58c;
  --loss:#c4705c;
  --sans:"General Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:"Zodiak",Georgia,serif;
  --mono:ui-monospace,"SF Mono","Cascadia Mono",Menlo,monospace;
  --wrap:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-weight:400;
  font-size:18px;
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--mint);color:#04120c}

/* ---------- portal ---------- */
.gate{
  position:fixed !important;
  inset:0;z-index:100;
  background:var(--bg);
  display:flex;align-items:center;justify-content:center;
  transition:opacity .7s ease,visibility .7s ease;
}
.gate.done{opacity:0;visibility:hidden;pointer-events:none}
.gate-inner{display:flex;flex-direction:column;align-items:center;gap:14px}
.gate-brand{font-family:var(--mono);font-size:12px;letter-spacing:.35em;color:var(--faint);text-transform:lowercase}
.gate-num{font-family:var(--serif);font-style:italic;font-weight:301;font-size:clamp(64px,10vw,110px);line-height:1;color:var(--ink);font-variant-numeric:tabular-nums}
.gate-line{width:180px;height:1px;background:linear-gradient(90deg,transparent,var(--mint),transparent)}
.gate-label{font-family:var(--mono);font-size:11px;letter-spacing:.3em;color:var(--mint);text-transform:uppercase}

/* ---------- cena ---------- */
#space{position:fixed;inset:0;width:100%;height:100%;z-index:0;display:block}
#spaceFallback{position:fixed;inset:0;z-index:0;display:none}
#spaceFallback svg{width:100%;height:100%}
html.no-webgl #space{display:none}
html.no-webgl #spaceFallback,html.reader #spaceFallback{display:block}
html.reader #space{display:none}

/* ---------- navegação ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px clamp(20px,4vw,48px);
  /* v4 · vidro fumê quase opaco: a opacidade fica só no fundo; logo, textos e botões permanecem opacos */
  background:rgba(5,5,7,.98);
  -webkit-backdrop-filter:blur(20px);
  backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .nav{background:#050507}
}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none}
.brand-mark{width:26px;height:26px;color:var(--mint)}
.brand-name{font-family:var(--sans);font-weight:600;font-size:19px;letter-spacing:.02em}
.nav-links{display:flex;gap:26px}
.nav-links a{color:var(--muted);text-decoration:none;font-size:14px;letter-spacing:.02em;transition:color .25s}
.nav-links a:hover,.nav-links a:focus-visible{color:var(--ink)}
.nav-tools{display:flex;align-items:center;gap:10px}
.tool-btn{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;
  color:var(--muted);background:rgba(7,11,16,.6);
  border:1px solid var(--line);border-radius:999px;
  padding:8px 14px;cursor:pointer;transition:color .25s,border-color .25s;
}
.tool-btn:hover,.tool-btn[aria-pressed="true"]{color:var(--mint);border-color:var(--mint-deep)}
.nav-cta{
  font-size:14px;font-weight:600;color:#04120c;background:var(--mint);
  text-decoration:none;border-radius:999px;padding:10px 18px;
  white-space:nowrap;transition:background .25s,transform .25s;
}
.nav-cta:hover{background:var(--mint-strong);transform:translateY(-1px)}

/* ---------- estrutura ---------- */
main{position:relative;z-index:1}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 clamp(20px,4vw,48px)}
.wrap.narrow{max-width:860px}
.wrap.center{text-align:center}
.chapter{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;padding:140px 0 120px}
.mono{font-family:var(--mono)}

/* ---------- tipografia ---------- */
.kicker{font-family:var(--mono);font-size:12.5px;letter-spacing:.2em;color:var(--mint);text-transform:lowercase;margin-bottom:26px;text-shadow:0 0 12px rgba(5,5,7,.9)}
h1{
  font-family:var(--sans);font-weight:600;
  font-size:clamp(44px,6.6vw,94px);
  line-height:1.01;letter-spacing:-.048em;
  max-width:12ch;margin-bottom:28px;
}
.acc{font-family:var(--serif);font-style:italic;font-weight:401;color:var(--mint);letter-spacing:0}
.gold{font-family:var(--serif);font-style:italic;font-weight:401;color:var(--gold)}
.lead{font-size:clamp(18px,1.7vw,21px);line-height:1.75;color:var(--muted);max-width:52ch;margin-bottom:36px}
.chapter-tag{font-size:12.5px;letter-spacing:.22em;color:var(--faint);text-transform:lowercase;margin-bottom:22px;text-shadow:0 0 10px rgba(5,5,7,.95)}
.statement{
  font-family:var(--sans);font-weight:600;
  font-size:clamp(32px,4.5vw,60px);
  line-height:1.05;letter-spacing:-.04em;
  margin-bottom:30px;max-width:20ch;
}
.statement.big{max-width:none}
.center .statement{margin-left:auto;margin-right:auto}
.prose{color:var(--muted);font-size:clamp(17px,1.45vw,19.5px);line-height:1.75;max-width:58ch;margin-bottom:22px;text-shadow:0 1px 14px rgba(5,5,7,.85)}
.prose strong{color:var(--ink);font-weight:600}
.narrow-p{margin-bottom:48px}
.center .prose{margin-left:auto;margin-right:auto}
.refs{font-size:12px;line-height:1.75;color:var(--faint);max-width:72ch;margin-top:26px;text-shadow:0 0 10px rgba(5,5,7,.95)}
.center .refs{margin-left:auto;margin-right:auto}

/* ---------- hero ---------- */
.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);align-items:center;gap:40px;width:100%}
.hero-copy{grid-column:1}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--sans);font-size:15px;font-weight:500;
  padding:14px 26px;border-radius:999px;text-decoration:none;
  transition:transform .25s,background .25s,border-color .25s;
}
.btn-primary{background:var(--mint);color:#04120c;font-weight:600}
.btn-primary:hover{background:var(--mint-strong);transform:translateY(-2px)}
.btn-ghost{color:var(--ink);border:1px solid var(--line-strong);background:rgba(7,11,16,.55)}
.btn-ghost:hover{border-color:var(--mint);transform:translateY(-2px)}
.btn-lg{font-size:clamp(16px,2vw,20px);padding:18px 34px}
.btn-arrow{font-size:13px}
.microtrust{font-size:12px;letter-spacing:.14em;color:var(--faint);text-transform:lowercase;text-shadow:0 0 10px rgba(5,5,7,.95),0 0 3px rgba(5,5,7,.95)}
.scroll-hint{
  position:absolute;bottom:30px;left:50%;transform:translateX(-50%);
  display:flex;align-items:center;gap:12px;white-space:nowrap;
  font-size:10px;letter-spacing:.26em;color:var(--faint);text-transform:lowercase;
}
.loop-clone .scroll-hint{display:none}
.hint-line{display:block;width:52px;height:1px;background:var(--faint);position:relative;overflow:hidden}
.hint-line::after{content:"";position:absolute;inset:0;background:var(--mint);transform:translateX(-100%);animation:hintSweep 2.6s ease-in-out infinite}
@keyframes hintSweep{0%{transform:translateX(-100%)}55%{transform:translateX(100%)}100%{transform:translateX(100%)}}

/* ---------- estatísticas ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:18px;
  overflow:hidden;margin-top:64px;
}
.stat{background:var(--surface);padding:34px 30px;backdrop-filter:blur(12px)}
.stat-num{
  display:block;font-family:var(--serif);font-weight:301;font-style:italic;
  font-size:clamp(44px,4.6vw,64px);line-height:1;color:var(--ink);
  font-variant-numeric:tabular-nums;margin-bottom:12px;
}
.stat-unit{font-size:.55em;color:var(--mint);margin-left:2px}
.stat-label{font-size:14.5px;line-height:1.6;color:var(--muted)}

/* ---------- prova / chat ---------- */
.prova-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(32px,5vw,80px);align-items:center}
.disclaimer{font-size:12px;letter-spacing:.06em;line-height:1.8;color:var(--faint);max-width:48ch;text-transform:lowercase;text-shadow:0 0 10px rgba(5,5,7,.95)}
.chat-shell{
  background:#0b1014;border:1px solid var(--line-strong);border-radius:20px;
  overflow:hidden;
  box-shadow:0 34px 90px rgba(0,0,0,.6);
}
.chat-head,.chat-foot{
  display:flex;justify-content:space-between;gap:12px;
  padding:14px 20px;font-size:11.5px;letter-spacing:.1em;
  color:var(--faint);text-transform:lowercase;
}
.chat-head{border-bottom:1px solid var(--line)}
.chat-foot{border-top:1px solid var(--line)}
.chat-status{color:var(--mint);display:flex;align-items:center;gap:7px}
.dot{width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px var(--mint);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.chat-body{min-height:380px;padding:22px 20px;display:flex;flex-direction:column;gap:12px}
.bubble{
  max-width:84%;padding:13px 17px;border-radius:16px;
  font-size:15.5px;line-height:1.6;
  opacity:0;transform:translateY(10px);
  transition:opacity .5s ease,transform .5s ease;
}
.bubble.on{opacity:1;transform:none}
.bubble .t{display:block;font-family:var(--mono);font-size:10px;margin-top:7px;letter-spacing:.08em}
.bubble.patient{align-self:flex-start;background:#e9efe8;color:#1b241f;border-bottom-left-radius:4px}
.bubble.patient .t{color:#5d6b62}
.bubble.orbian{align-self:flex-end;background:#14382c;color:#eaf5ee;border:1px solid rgba(143,230,201,.28);border-bottom-right-radius:4px}
.bubble.orbian .t{color:#8fbfa9}
.typing{align-self:flex-end;display:flex;gap:5px;padding:14px 18px;background:#14382c;border-radius:16px;border-bottom-right-radius:4px}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--mint);animation:tp 1.1s ease-in-out infinite}
.typing i:nth-child(2){animation-delay:.18s}.typing i:nth-child(3){animation-delay:.36s}
@keyframes tp{0%,100%{opacity:.25;transform:translateY(0)}50%{opacity:1;transform:translateY(-4px)}}

/* ---------- critério ---------- */
.orbit-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.orbit-card{
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  padding:34px 30px;backdrop-filter:blur(12px);
  transition:transform .35s ease,border-color .35s ease;
}
.orbit-card:hover{transform:translateY(-6px);border-color:var(--line-strong)}
.orbit-badge{
  display:inline-block;font-size:11px;letter-spacing:.16em;text-transform:lowercase;
  padding:6px 12px;border-radius:999px;margin-bottom:22px;
}
.orbit-a{color:var(--mint);border:1px solid rgba(143,230,201,.35)}
.orbit-b{color:var(--gold);border:1px solid rgba(215,181,140,.35)}
.orbit-c{color:var(--loss);border:1px solid rgba(196,112,92,.4)}
.orbit-card h3{font-size:20px;font-weight:600;letter-spacing:-.01em;margin-bottom:14px}
.orbit-card p{font-size:15.5px;line-height:1.7;color:var(--muted)}

/* ---------- a conta ---------- */
.ledger{
  display:flex;flex-direction:column;gap:26px;
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  padding:36px 32px;margin:44px 0 34px;backdrop-filter:blur(12px);
}
.ledger-head{display:flex;justify-content:space-between;gap:14px;font-size:11.5px;letter-spacing:.1em;color:var(--muted);text-transform:lowercase;margin-bottom:10px}
.meter{height:8px;border-radius:99px;background:rgba(236,241,238,.08);overflow:hidden}
.meter-fill{display:block;height:100%;border-radius:99px;width:0;transition:width 1.4s cubic-bezier(.22,1,.36,1)}
.fill-clt{background:var(--gold)}
.fill-void{background:var(--loss)}
.fill-orbit{background:linear-gradient(90deg,var(--mint-deep),var(--mint))}

/* ---------- começo ---------- */
.comeco .statement.big{font-size:clamp(38px,5.4vw,72px)}
.cta-final{display:flex;flex-direction:column;align-items:center;gap:18px;margin:42px 0 90px}
.foot{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding-top:26px;
  font-size:11.5px;letter-spacing:.12em;color:var(--faint);text-transform:lowercase;
  text-shadow:0 0 10px rgba(5,5,7,.95);
}

/* ---------- loop ---------- */
.loop-clone{pointer-events:none}
html.reader .loop-clone{display:none}

/* ---------- HUD + assinatura ---------- */
.hud{
  position:fixed;bottom:22px;left:clamp(20px,4vw,48px);z-index:40;
  display:flex;gap:10px;font-size:11px;letter-spacing:.2em;
  color:var(--faint);text-transform:lowercase;text-shadow:0 0 8px rgba(5,5,7,.9);
}
.hud-sep{color:var(--mint)}
.sig{
  position:fixed;bottom:22px;right:clamp(20px,4vw,48px);z-index:40;
  font-size:11px;letter-spacing:.2em;color:var(--faint);text-shadow:0 0 8px rgba(5,5,7,.9);
}

/* ---------- reveals ---------- */
html.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .9s cubic-bezier(.22,1,.36,1),transform .9s cubic-bezier(.22,1,.36,1)}
html.js .reveal.in{opacity:1;transform:none}
html.js .d1{transition-delay:.08s}
html.js .d2{transition-delay:.16s}
html.js .d3{transition-delay:.24s}
html.js .d4{transition-delay:.32s}
html.reader .reveal{opacity:1 !important;transform:none !important}

@media (prefers-reduced-motion:reduce){
  html.js .reveal{opacity:1;transform:none;transition:none}
  .hint-line::after,.dot,.typing i{animation:none}
  .meter-fill{transition:none}
}

/* ---------- responsivo ---------- */
@media (max-width:1020px){
  .hero-grid{grid-template-columns:1fr}
  .prova-grid{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr}
  .orbit-cards{grid-template-columns:1fr}
  .nav-links{display:none}
}
@media (max-width:640px){
  body{font-size:17px}
  .chapter{padding:120px 0 90px}
  .nav{padding:12px 14px;gap:8px;row-gap:8px;flex-wrap:wrap}
  .brand-name{font-size:17px}
  .nav-tools{order:1;margin-left:auto}
  .tool-btn{padding:6px 9px;font-size:9.5px;white-space:nowrap}
  .nav-cta{padding:9px 13px;font-size:12.5px;white-space:nowrap}
  .kicker{font-size:10px;letter-spacing:.15em}
  .chat-body{min-height:330px}
  .ledger{padding:26px 20px}
  .hud{display:none}
  .scroll-hint{display:none}
}

/* ---------- v3 · trilha de estados do agente ---------- */
.agent-track{
  display:flex;align-items:center;gap:6px;flex-wrap:wrap;
  padding:10px 20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  font-size:10.5px;letter-spacing:.08em;text-transform:lowercase;color:var(--faint);
}
.ag-step{position:relative;padding:4px 10px;border:1px solid var(--line);border-radius:999px;transition:color .4s ease,border-color .4s ease,background .4s ease}
.ag-step.done{color:var(--mint);border-color:rgba(143,230,201,.4)}
.ag-step.on,.ag-step.on.done{color:#0b241a;background:var(--mint);border-color:var(--mint);font-weight:600}
.ag-step+.ag-step::before{content:"";position:absolute;left:-7px;top:50%;width:6px;height:1px;background:var(--line-strong)}

/* ---------- v3 · dots de capítulo (direita) ---------- */
.dots{
  position:fixed;right:clamp(14px,2.4vw,30px);top:50%;transform:translateY(-50%);
  z-index:40;display:flex;flex-direction:column;gap:16px;
}
.dots a{display:flex;align-items:center;justify-content:flex-end;gap:10px;text-decoration:none}
.dot-pt{width:6px;height:6px;border-radius:50%;background:var(--faint);opacity:.55;transition:all .35s ease}
.dots a.on .dot-pt{background:var(--mint);opacity:1;box-shadow:0 0 10px rgba(143,230,201,.7);transform:scale(1.35)}
.dot-label{font-size:10px;letter-spacing:.18em;color:var(--faint);text-transform:lowercase;opacity:0;transform:translateX(6px);transition:all .3s ease;text-shadow:0 0 8px rgba(5,5,7,.9)}
.dots a:hover .dot-label,.dots a:focus-visible .dot-label,.dots a.on .dot-label{opacity:1;transform:none}
.dots a.on .dot-label{color:var(--muted)}

/* ---------- v3 · grão de filme ---------- */
.grain{
  position:fixed;inset:-50%;z-index:90;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 300 300' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grainShift 1.2s steps(4) infinite;
}
@keyframes grainShift{
  0%{transform:translate(0,0)}25%{transform:translate(-2%,1.5%)}
  50%{transform:translate(1.5%,-2%)}75%{transform:translate(-1%,-1%)}100%{transform:translate(0,0)}
}
html.reader .grain,html.no-webgl .grain{display:none}
@media (prefers-reduced-motion: reduce){.grain{animation:none;opacity:.035}}

@media (max-width:1020px){
  .dots{display:none}
}
@media (max-width:640px){
  .agent-track{padding:9px 14px;gap:5px}
  .ag-step{padding:3px 8px;font-size:9.5px}
}


/* =====================================================================
   v4 · INTERVALO DE SILÊNCIO — a origem (homenagem)
   Dois sentidos num só gesto: luto (a cena se recolhe, a palavra se desfaz)
   e esperança (a luz sobe, a palavra que fica, o núcleo que reacende).
   O meio-termo é a própria luz: nem o preto do espaço, nem o branco puro —
   cinza-quente que clareia à medida que se lê.
   ===================================================================== */
:root{
  --cinza:#D6D2C8;   /* o primeiro claro depois do escuro */
  --osso:#E9E5DC;
  --aurora:#F2EFE8;  /* a luz plena */
  --tinta:#17191A;
  --pedra:#454944;
  --pedra-2:#3F423D;
  --grafite:#2C2F2D;
  --menta-funda:#2E7A62;
}

/* --- limiar: o tempo da cena desacelera --- */
.limiar{
  position:relative;z-index:1;
  min-height:72vh;display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:120px clamp(20px,4vw,48px) 0;text-align:center;
}
.limiar-frase{
  font-family:var(--serif);font-style:italic;font-weight:301;
  font-size:clamp(24px,3vw,38px);line-height:1.3;letter-spacing:-.01em;
  color:var(--muted);max-width:22ch;text-shadow:0 1px 14px rgba(5,5,7,.85);
}
.limiar-fio{
  display:block;width:1px;height:clamp(90px,16vh,160px);margin-top:38px;
  background:linear-gradient(180deg,var(--faint),rgba(135,147,140,0));
  transform-origin:top;transform:scaleY(0);
  transition:transform 1.6s cubic-bezier(.22,1,.36,1) .5s;
}
.limiar-frase.in + .limiar-fio{transform:scaleY(1)}
html.reader .limiar-fio{transform:scaleY(1)}

/* --- a carta: outra linguagem dentro da mesma página --- */
.origem{
  position:relative;z-index:1;
  background:linear-gradient(180deg,var(--cinza) 0%,var(--osso) 42%,var(--aurora) 100%);
  color:var(--tinta);
  padding:clamp(120px,16vh,190px) clamp(20px,4vw,48px) clamp(110px,14vh,170px);
}
/* a aurora: a luz sobe sobre o espaço antes de a carta começar */
.origem::before{
  content:"";position:absolute;left:0;right:0;bottom:100%;height:38vh;pointer-events:none;
  background:linear-gradient(180deg,rgba(214,210,200,0) 0%,rgba(214,210,200,.42) 55%,var(--cinza) 100%);
}
.fantasmas{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.carta{position:relative;z-index:2;max-width:680px;margin:0 auto;text-align:center}
.carta-tag{font-size:12px;letter-spacing:.26em;color:var(--pedra-2);text-transform:lowercase;margin-bottom:36px;text-shadow:none}
.carta-titulo{
  font-family:var(--serif);font-weight:400;font-style:normal;
  font-size:clamp(31px,4vw,54px);line-height:1.1;letter-spacing:-.025em;
  color:var(--tinta);margin:0 auto 54px;max-width:none;
}
.carta-titulo em{font-style:italic;font-weight:401;color:var(--grafite)}
.carta-p{
  font-size:clamp(17px,1.4vw,19px);line-height:1.85;color:var(--pedra);
  max-width:56ch;margin:0 auto 24px;text-shadow:none;
}
.carta-pivo{
  font-family:var(--serif);font-style:italic;font-weight:401;
  font-size:clamp(24px,2.6vw,34px);line-height:1.35;color:var(--tinta);
  margin:46px auto 46px;
}
.carta-fecho strong{color:var(--tinta);font-weight:600}
.dedicatoria{margin:84px auto 0;max-width:30ch}
.dedicatoria-fio{display:block;width:44px;height:1px;background:var(--pedra-2);margin:0 auto 30px}
.dedicatoria p{
  font-family:var(--serif);font-style:italic;font-weight:401;
  font-size:clamp(20px,2vw,25px);line-height:1.55;color:var(--grafite);
}
/* o núcleo reacende em miniatura — a esperança não é um discurso, é uma luz pequena */
.luz{margin:60px auto 0;width:84px;height:84px}
.luz-marca{width:100%;height:100%;overflow:visible}
.luz-orbita{fill:none;stroke:#8A8F88;stroke-width:1.1;stroke-dasharray:118 24}
.luz-nucleo{fill:var(--menta-funda);opacity:.0;transform-origin:32px 32px;transform:scale(.55);
  transition:opacity 1.4s ease .8s,transform 1.4s cubic-bezier(.22,1,.36,1) .8s}
.luz.in .luz-nucleo{opacity:1;transform:scale(1)}
html.reader .luz-nucleo{opacity:1;transform:none}
.carta-assinatura{margin-top:40px;font-size:10.5px;letter-spacing:.3em;color:var(--pedra-2);text-transform:lowercase;text-shadow:none}

/* --- palavras-fantasma: uma se desfaz (luto), outra chega e fica (esperança) --- */
.fantasma{
  position:absolute;white-space:nowrap;
  font-family:var(--serif);font-style:italic;font-weight:301;
  line-height:1;letter-spacing:-.05em;
  color:var(--tinta);opacity:0;will-change:transform,opacity,filter;
}
.fantasma-a{top:9%;left:0;font-size:clamp(84px,15vw,230px);transform:translateX(100vw)}
.fantasma-b{bottom:7%;left:50%;font-size:clamp(40px,9vw,136px);transform:translateX(-85%)}
.origem.ativa .fantasma-a{animation:desfazer 16s cubic-bezier(.3,.0,.2,1) .4s forwards}
.origem.ativa .fantasma-b{animation:permanecer 18s cubic-bezier(.16,1,.3,1) 3.5s forwards}
@keyframes desfazer{
  0%{transform:translateX(100vw);opacity:0;filter:blur(0);letter-spacing:-.05em}
  18%{opacity:.06}
  62%{opacity:.045;filter:blur(0)}
  100%{transform:translateX(-120%);opacity:0;filter:blur(6px);letter-spacing:.08em}
}
@keyframes permanecer{
  0%{transform:translateX(-85%);opacity:0}
  35%{opacity:.05}
  100%{transform:translateX(-50%);opacity:.045}
}
html.reader .fantasma-a{display:none}
html.reader .fantasma-b{transform:translateX(-50%);opacity:.045}

/* --- retorno: a cena volta, a órbita recomeça --- */
.retorno{
  position:relative;z-index:1;min-height:62vh;
  display:flex;align-items:center;justify-content:center;text-align:center;
  padding:110px clamp(20px,4vw,48px) 40px;
}
.retorno::before{
  content:"";position:absolute;left:0;right:0;top:0;height:46vh;pointer-events:none;
  background:linear-gradient(180deg,var(--aurora) 0%,rgba(242,239,232,.86) 18%,rgba(242,239,232,.5) 42%,rgba(242,239,232,.18) 68%,rgba(242,239,232,0) 100%);
}
.retorno-frase{
  position:relative;font-family:var(--sans);font-weight:500;
  font-size:clamp(22px,2.6vw,34px);line-height:1.3;letter-spacing:-.025em;
  color:var(--ink);max-width:none;text-shadow:0 1px 14px rgba(5,5,7,.85);
}

/* --- durante o silêncio, a interface de bordo se cala; só a assinatura fica --- */
.hud,.dots{transition:opacity .8s ease}
html.silencio .hud,html.silencio .dots{opacity:0;pointer-events:none}
/* a assinatura se adapta ao fundo por diferença: escura sobre o marfim, clara sobre o espaço */
.sig{transition:color .8s ease,text-shadow .8s ease}
html.silencio .sig{color:#e6e2d8;mix-blend-mode:difference;text-shadow:none}

@media (prefers-reduced-motion:reduce){
  .limiar-fio{transition:none;transform:scaleY(1)}
  .fantasma-a{display:none}
  .fantasma-b{transform:translateX(-50%);opacity:.04}
  .origem.ativa .fantasma-a,.origem.ativa .fantasma-b{animation:none}
  .luz-nucleo{transition:none;opacity:1;transform:none}
  .hud,.dots,.sig{transition:none}
}
@media (max-width:640px){
  .limiar{min-height:60vh;padding-top:90px}
  .origem{padding:96px 22px 90px}
  .carta-titulo{margin-bottom:40px}
  .dedicatoria{margin-top:64px}
  .retorno{min-height:50vh;padding-top:80px}
}