/* ===========================================================
   Autoescrita Human Branding · Bionica
   Base comum da capa e do exercício.
   Em cima do núcleo do kit oficial (sistema-sites/css/bionica-interface.css).
   Padrão medido nos três sites de referência aprovados em 20/09/2026.
   =========================================================== */

@font-face{font-family:"Helvetica Now Display";font-style:normal;font-weight:300;font-display:swap;src:url("../sistema-sites/fontes/helvetica-now-display-300-normal.woff2") format("woff2")}
@font-face{font-family:"Helvetica Now Display";font-style:normal;font-weight:400;font-display:swap;src:url("../sistema-sites/fontes/helvetica-now-display-400-normal.woff2") format("woff2")}
@font-face{font-family:"Helvetica Now Display";font-style:italic;font-weight:400;font-display:swap;src:url("../sistema-sites/fontes/helvetica-now-display-400-italic.woff2") format("woff2")}
@font-face{font-family:"Helvetica Now Display";font-style:normal;font-weight:500;font-display:swap;src:url("../sistema-sites/fontes/helvetica-now-display-500-normal.woff2") format("woff2")}
@font-face{font-family:"Helvetica Now Display";font-style:italic;font-weight:500;font-display:swap;src:url("../sistema-sites/fontes/helvetica-now-display-500-italic.woff2") format("woff2")}
@font-face{font-family:"Helvetica Now Display";font-style:normal;font-weight:700;font-display:swap;src:url("../sistema-sites/fontes/helvetica-now-display-700-normal.woff2") format("woff2")}

:root{
  --content:1540px;
  --pad:clamp(22px,5vw,88px);
  --topo-h:76px;
  --secao:clamp(92px,9.5vw,152px);
  --ease:cubic-bezier(.2,.7,.2,1);

  /* Acento deste projeto: a luz fria da fotografia.
     A ação principal é a pílula clara, como na referência aprovada. */
  --accent:#eef3fa; --accent-ink:#070a11;
  --accent-soft:rgba(163,197,240,.12); --accent-line:rgba(163,197,240,.42);
  --luz:#a3c5f0;          /* só em brilho, fio e estado; nunca como área de fundo */
  --luz-fraca:rgba(163,197,240,.14);
}

*{box-sizing:border-box}
html{background:var(--bg);scroll-padding-top:calc(var(--topo-h) + 24px);-webkit-text-size-adjust:100%}
body{margin:0;font:500 20px/1.55 var(--display);color:var(--body);background:var(--bg);
  font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:clip}
img{max-width:100%;display:block}
a{color:inherit}
[hidden]{display:none!important}
h1,h2,h3,h4{font-weight:500;text-wrap:balance;margin:0;color:var(--ink)}
b,strong{font-weight:700;color:var(--ink)}
p{text-wrap:pretty;margin:0}
button,input,textarea,select{font:inherit;color:inherit;caret-color:var(--luz)}

::selection{background:var(--luz);color:#070a11}
:focus-visible{outline:2px solid var(--luz);outline-offset:3px;border-radius:6px}
[tabindex="-1"]:focus,[tabindex="-1"]:focus-visible{outline:none}
::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-track{background:var(--bg-deep)}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:99px;border:3px solid var(--bg-deep)}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.24)}

.shell{width:100%;max-width:calc(var(--content) + var(--pad)*2);margin-inline:auto;padding-inline:var(--pad)}
.secao{padding-top:var(--secao);padding-bottom:var(--secao);position:relative}

.pula{position:fixed;top:14px;left:var(--pad);z-index:400;padding:12px 22px;border-radius:999px;
  background:var(--ink);color:var(--bg);text-decoration:none;transform:translateY(-220%)}
.pula:focus{transform:none}

/* ---------- topo ---------- */
.topbar{position:fixed;inset:0 0 auto;z-index:100;border-bottom:1px solid transparent;
  background:linear-gradient(180deg,rgba(5,6,9,.78),rgba(5,6,9,.34) 62%,rgba(5,6,9,0));
  transition:background .28s,border-color .28s,box-shadow .28s}
.topbar.is-scrolled{background:transparent}
.topbar::before{content:'';position:absolute;inset:0;z-index:-1;opacity:0;
  background:rgba(5,6,9,.9);backdrop-filter:blur(18px) saturate(130%);
  -webkit-backdrop-filter:blur(18px) saturate(130%);transition:opacity .28s}
.topbar.is-scrolled::before{opacity:1}
.topbar.is-scrolled{border-color:var(--line-faint);box-shadow:var(--shadow-header)}
.topbar-inner{min-height:var(--topo-h);display:grid;grid-template-columns:1fr auto 1fr;gap:28px;align-items:center}
.marca{display:inline-flex;align-items:center;min-height:44px;justify-self:start}
.marca img{height:19px;width:auto}
.menu{display:flex;gap:2px;padding:4px;border:1px solid var(--line-faint);border-radius:999px;
  background:rgba(255,255,255,.04);font-size:15px;backdrop-filter:blur(10px);grid-column:2}
.menu a{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border-radius:999px;
  color:var(--muted);text-decoration:none;transition:color .2s,background .2s;white-space:nowrap}
.menu a:hover{background:rgba(255,255,255,.07);color:var(--ink)}
.menu a.ativo,.menu a[aria-current=page]{background:rgba(255,255,255,.1);color:var(--ink)}
.menu a.btn-1{background:var(--accent);color:var(--accent-ink)}
.menu a.btn-1:hover{background:#fff;color:var(--accent-ink)}
.topo-acoes{justify-self:end;display:flex;align-items:center;gap:12px;grid-column:3}
.topbar .menu-btn{display:none}

/* ---------- botões ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:48px;min-width:44px;
  padding:0 24px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.03);
  color:var(--ink);font-size:16px;font-weight:500;text-decoration:none;cursor:pointer;white-space:nowrap;
  transition:background .2s,border-color .2s,transform .14s,color .2s,opacity .2s}
.btn:hover{border-color:var(--line-strong);background:rgba(255,255,255,.075)}
.btn:active{transform:scale(.985)}
.btn[disabled]{opacity:.4;cursor:not-allowed}
.btn[disabled]:hover{background:rgba(255,255,255,.03);border-color:var(--line)}
.btn-1{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
/* sombra só onde o botão claro precisa se descolar de uma fotografia */
.capa .btn-1,.fecho .btn-1{box-shadow:0 1px 1px rgba(0,0,0,.45),0 5px 12px rgba(0,0,0,.3)}
.btn-1:hover{background:#fff;border-color:#fff}
.capa .btn-1:hover,.fecho .btn-1:hover{box-shadow:0 1px 1px rgba(0,0,0,.45),0 8px 20px rgba(0,0,0,.36)}
.btn-g{min-height:56px;padding:0 30px;font-size:17px}
.btn-p{min-height:44px;padding:0 18px;font-size:15px;color:var(--muted)}
.btn-p:hover{color:var(--ink)}
.btn svg{flex:0 0 auto}
.btn>.rotulo{margin-left:-12px}
.btn>svg+.rotulo{margin-left:0}
.menu-cta{display:none!important}

/* ---------- textos recorrentes ---------- */
.olho{font-size:15px;letter-spacing:.07em;color:var(--muted);font-weight:500;
  text-wrap:balance;max-width:44ch}
.titulo-secao{font-size:clamp(34px,3.6vw,58px);line-height:1.03;letter-spacing:-.04em;max-width:19ch}
.secao-intro{font-size:19px;line-height:1.55;color:var(--body);max-width:54ch;margin-top:22px}

/* ---------- revelação ---------- */
[data-reveal]{opacity:1;transform:none}
html.js [data-reveal]{opacity:0;transform:translateY(18px);
  transition:opacity .7s var(--ease),transform .7s var(--ease)}
html.js [data-reveal].visivel{opacity:1;transform:none}
html.js [data-reveal][data-atraso="1"]{transition-delay:.08s}
html.js [data-reveal][data-atraso="2"]{transition-delay:.16s}
html.js [data-reveal][data-atraso="3"]{transition-delay:.24s}

/* ---------- rodapé ---------- */
.rodape{border-top:1px solid var(--line);padding-block:44px;color:var(--muted);font-size:14.5px}
.rodape-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.rodape img{height:17px;width:auto;opacity:.85}
.rodape p{max-width:62ch;line-height:1.5}

@media(max-width:960px){
  :root{--topo-h:64px}
  .topbar-inner{grid-template-columns:1fr auto;gap:14px}
  .topo-acoes{display:none}
  .menu-cta{display:inline-flex!important;margin-top:4px}
  .menu{position:absolute;top:calc(100% + 8px);left:var(--pad);right:var(--pad);display:none;
    border-radius:20px;padding:8px;background:var(--panel);border-color:var(--line-strong);
    box-shadow:var(--shadow-float);grid-column:auto}
  .topbar.menu-aberto .menu{display:grid;gap:4px}
  .menu a{justify-content:flex-start;border-radius:14px;min-height:48px;padding-inline:18px}
  .topbar .menu-btn{display:inline-flex;grid-column:auto}

}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto!important}
  *,*::before,*::after{animation:none!important;transition:none!important}
  html.js [data-reveal]{opacity:1;transform:none}
}