/* ==========================================================================
   LETHOR — Engenharia de Software
   Identidade aprovada · paleta oficial
   ========================================================================== */

:root{
  /* paleta da marca */
  --bg:#040A14;
  --bg-deep:#061326;
  --navy:#15253F;
  --silver:#EDF1F5;
  --blue-light:#34C5FD;
  --blue:#1686FE;
  --blue-deep:#095CFD;

  --surface:#08111F;
  --surface-2:#0B1728;
  --line:rgba(237,241,245,.09);
  --line-strong:rgba(237,241,245,.16);
  --text:#EDF1F5;
  --muted:#93A1B4;
  --muted-2:#6F7F94;

  --max:1200px;
  --ease:cubic-bezier(.2,.7,.25,1);
}

@font-face{
  font-family:"Inter Fallback";
  src:local("Arial"),local("Helvetica Neue"),local("Liberation Sans");
  size-adjust:107%;ascent-override:90%;descent-override:22.4%;line-gap-override:0%;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:Inter,"Inter Fallback",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  font-size:16px;line-height:1.62;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.locked{overflow:hidden}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%}
.container{width:min(calc(100% - 40px),var(--max));margin-inline:auto}
.icon-sprite{position:absolute;width:0;height:0;overflow:hidden}

.skip{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--blue);color:#fff;padding:12px 18px;border-radius:0 0 10px 0;font-weight:700;
}
.skip:focus{left:0}

::selection{background:rgba(22,134,254,.35);color:#fff}

h1,h2,h3{margin:0;line-height:1.05;letter-spacing:-.035em;font-weight:650}
h1{font-size:clamp(38px,5.2vw,66px);letter-spacing:-.042em;max-width:15ch}
h2{font-size:clamp(31px,4.3vw,52px)}
h3{font-size:19px;letter-spacing:-.02em}

.eyebrow{
  margin:0 0 20px;display:inline-flex;align-items:center;gap:9px;
  color:var(--blue-light);font-size:11px;font-weight:700;
  letter-spacing:.22em;text-transform:uppercase;
}
.eyebrow::before{
  content:"";width:26px;height:2px;
  background:linear-gradient(90deg,var(--blue-light),transparent);
}
.grad{
  background:linear-gradient(96deg,var(--blue-light) 0%,var(--blue) 48%,var(--blue-deep) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lead{color:var(--muted);font-size:17.5px;margin:0}
.lead a,.faq p a{
  color:#BBD6F7;text-decoration:underline;text-underline-offset:3px;
  text-decoration-color:rgba(52,197,253,.45);transition:color .2s,text-decoration-color .2s;
}
.lead a:hover,.faq p a:hover{color:#fff;text-decoration-color:var(--blue-light)}
.section-lead{max-width:680px;margin-top:20px}
.lead-2{margin-top:20px;color:var(--muted-2)}

/* ============ BOTÕES ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 22px;border-radius:11px;border:1px solid var(--line-strong);
  font-size:13.5px;font-weight:700;letter-spacing:.005em;
  background:transparent;color:#fff;cursor:pointer;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s,background .25s;
}
.btn:hover{transform:translateY(-2px);border-color:rgba(237,241,245,.32)}
.btn-primary{
  background:linear-gradient(120deg,var(--blue) 0%,var(--blue-deep) 100%);
  border-color:transparent;
  box-shadow:0 8px 26px rgba(22,134,254,.22);
}
.btn-primary:hover{box-shadow:0 14px 40px rgba(22,134,254,.34)}
.btn-ghost{background:rgba(237,241,245,.03)}

/* ==========================================================================
   INTRO / PRELOADER
   ========================================================================== */
.intro{
  position:fixed;inset:0;z-index:200;
  display:flex;align-items:center;justify-content:center;
  background:radial-gradient(ellipse at 50% 45%,#0A1A30 0%,var(--bg) 62%);
  transition:opacity .7s var(--ease),visibility .7s;
}
.intro.done{opacity:0;visibility:hidden;pointer-events:none}
.intro-inner{width:min(560px,80vw);text-align:center}
.logo-anim{width:100%;height:auto;display:block}
.intro-bar{
  width:180px;height:2px;margin:34px auto 0;
  background:rgba(237,241,245,.1);border-radius:2px;overflow:hidden;
}
.intro-bar span{
  display:block;height:100%;width:0;border-radius:2px;
  background:linear-gradient(90deg,var(--blue-light),var(--blue-deep));
  animation:loadBar 1.9s var(--ease) forwards;
}
@keyframes loadBar{to{width:100%}}

/* animação da logo — construção progressiva */
.la-stem{opacity:0;transform:translateX(-14px);transform-origin:left center;animation:laStem .7s .1s var(--ease) forwards}
.la-bar{opacity:0;transform-box:fill-box;transform-origin:left center;transform:scaleX(0)}
.la-bar3{animation:laBar .5s .45s var(--ease) forwards}
.la-bar2{animation:laBar .5s .60s var(--ease) forwards}
.la-bar1{animation:laBar .5s .75s var(--ease) forwards}
.la-l{opacity:0;animation:laFade .6s .55s var(--ease) forwards}
.la-thor{opacity:0;animation:laFade .6s 1.15s var(--ease) forwards}
.la-e rect{transform-box:fill-box;transform-origin:left center;transform:scaleX(0);opacity:0}
.la-e1{animation:laBar .45s .80s var(--ease) forwards}
.la-e2{animation:laBar .45s .93s var(--ease) forwards}
.la-e3{animation:laBar .45s 1.06s var(--ease) forwards}
.la-desc{opacity:0;animation:laDesc .8s 1.4s var(--ease) forwards}
.la-sheen{opacity:0;animation:laSheen 1.1s 1.5s var(--ease) forwards}

@keyframes laStem{to{opacity:1;transform:none}}
@keyframes laBar{to{opacity:1;transform:scaleX(1)}}
@keyframes laFade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes laDesc{from{opacity:0;letter-spacing:9px}to{opacity:1;letter-spacing:5.4px}}
@keyframes laSheen{0%{opacity:0;transform:translateX(0)}18%{opacity:1}100%{opacity:0;transform:translateX(1000px)}}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(4,10,20,.72);
  backdrop-filter:saturate(160%) blur(16px);
  -webkit-backdrop-filter:saturate(160%) blur(16px);
  border-bottom:1px solid transparent;
  transition:background .3s,border-color .3s;
}
.site-header.scrolled{background:rgba(4,10,20,.92);border-bottom-color:var(--line)}
.nav{height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px;transition:height .3s var(--ease)}
.site-header.scrolled .nav{height:74px}
.brand{display:flex;align-items:center;gap:13px;transition:opacity .25s}
.brand:hover{opacity:.86}
.brand-icon{width:38px;height:auto;display:block;transition:width .3s var(--ease)}
.brand-stack{display:flex;flex-direction:column;justify-content:center}
.brand-word{width:152px;height:auto;display:block;transition:width .3s var(--ease)}
.brand-desc{
  display:block;margin-top:3px;font-size:8.5px;font-weight:600;
  letter-spacing:.285em;color:#95A3B6;text-transform:uppercase;white-space:nowrap;
}
.site-header.scrolled .brand-icon{width:33px}
.site-header.scrolled .brand-word{width:134px}

.nav-links{display:flex;align-items:center;gap:30px;font-size:13.5px;color:#AEBACA}
.nav-links a:not(.btn){position:relative;padding:4px 0;transition:color .22s}
.nav-links a:not(.btn)::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:linear-gradient(90deg,var(--blue-light),var(--blue));
  transition:width .3s var(--ease);
}
.nav-links a:not(.btn):hover{color:#fff}
.nav-links a:not(.btn):hover::after{width:100%}

.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line-strong);
  border-radius:10px;background:transparent;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.menu-toggle span{display:block;width:18px;height:1.6px;background:#DCE3EC;transition:.3s var(--ease)}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{position:relative;padding:86px 0 0;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(760px 520px at 76% 26%,rgba(22,134,254,.14),transparent 62%),
    radial-gradient(560px 420px at 12% 8%,rgba(52,197,253,.06),transparent 60%),
    linear-gradient(180deg,var(--bg-deep) 0%,var(--bg) 68%);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(237,241,245,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(237,241,245,.028) 1px,transparent 1px);
  background-size:74px 74px;
  mask-image:radial-gradient(ellipse 78% 62% at 60% 38%,#000 12%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 78% 62% at 60% 38%,#000 12%,transparent 78%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;
  align-items:center;gap:70px;min-height:min(76vh,700px);padding-bottom:56px;
}
.hero-copy{max-width:620px;color:#A4B0C0;font-size:18.5px;margin:28px 0 0}
.slogan{
  margin:26px 0 0;font-weight:700;color:#fff;font-size:17px;
  padding-left:16px;border-left:2px solid var(--blue);
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:36px}

.hero-copy-col>*{opacity:0;transform:translateY(18px);animation:rise .9s var(--ease) forwards}
.hero-copy-col>*:nth-child(1){animation-delay:.10s}
.hero-copy-col>*:nth-child(2){animation-delay:.18s}
.hero-copy-col>*:nth-child(3){animation-delay:.28s}
.hero-copy-col>*:nth-child(4){animation-delay:.38s}
.hero-copy-col>*:nth-child(5){animation-delay:.48s}
@keyframes rise{to{opacity:1;transform:none}}

/* bloco de identidade */
.hero-identity{
  position:relative;display:flex;flex-direction:column;
  align-items:center;justify-content:center;min-height:470px;
}
.orbit{
  position:absolute;border-radius:50%;border:1px solid rgba(52,197,253,.11);
  top:44%;left:50%;translate:-50% -50%;
}
.orbit-1{width:340px;height:340px;animation:spin 26s linear infinite}
.orbit-1::after{
  content:"";position:absolute;top:-4px;left:calc(50% - 4px);
  width:7px;height:7px;border-radius:50%;background:var(--blue-light);
  box-shadow:0 0 14px 3px rgba(52,197,253,.6);
}
.orbit-2{
  width:470px;height:470px;border-style:dashed;border-color:rgba(52,197,253,.07);
  animation:spin 46s linear infinite reverse;
}
@keyframes spin{to{rotate:360deg}}

.grid-plane{
  position:absolute;width:420px;height:420px;top:44%;left:50%;translate:-50% -50%;
  background:
    radial-gradient(circle,rgba(22,134,254,.14),transparent 68%);
  filter:blur(6px);
}

.hero-mark{
  position:relative;z-index:3;width:min(230px,52%);height:auto;display:block;
  filter:drop-shadow(0 18px 44px rgba(9,92,253,.35));
}
.hm-stem{opacity:0;transform:translateY(14px);animation:rise .9s .25s var(--ease) forwards}
.hm-bar{transform-box:fill-box;transform-origin:left center;transform:scaleX(0);opacity:0}
.hm-b3{animation:barIn .6s .55s var(--ease) forwards,barPulse 6.5s 3s ease-in-out infinite}
.hm-b2{animation:barIn .6s .72s var(--ease) forwards,barPulse 6.5s 3.18s ease-in-out infinite}
.hm-b1{animation:barIn .6s .89s var(--ease) forwards,barPulse 6.5s 3.36s ease-in-out infinite}
@keyframes barIn{to{opacity:1;transform:scaleX(1)}}
@keyframes barPulse{
  0%,72%,100%{opacity:1;filter:none}
  78%{opacity:.35;filter:brightness(1.7)}
  86%{opacity:1;filter:brightness(1.25)}
}

.scan{
  position:absolute;z-index:4;left:22%;right:22%;height:1px;top:20%;
  background:linear-gradient(90deg,transparent,var(--blue-light),transparent);
  opacity:0;animation:scanMove 5.5s 2s ease-in-out infinite;
}
@keyframes scanMove{
  0%{opacity:0;transform:translateY(0)}
  8%{opacity:.75}
  46%{opacity:.75}
  56%{opacity:0;transform:translateY(230px)}
  100%{opacity:0;transform:translateY(230px)}
}

.hero-word{
  position:relative;z-index:3;width:min(360px,84%);margin-top:34px;text-align:center;
  opacity:0;animation:rise .9s 1.15s var(--ease) forwards;
}
.hero-word img{display:block;width:100%;height:auto}
.hero-desc{
  margin:12px 0 0;color:#AAB6C6;font-size:11px;
  letter-spacing:.42em;text-transform:uppercase;
}

/* faixa complexidade → estrutura → inteligência */
.hero-band{
  margin:0;position:relative;display:flex;align-items:center;justify-content:center;
  gap:20px;flex-wrap:wrap;padding:26px 0 40px;
  font-size:11.5px;letter-spacing:.24em;text-transform:uppercase;
  color:var(--muted-2);font-weight:600;
  border-top:1px solid var(--line);
}
.hero-band i{width:34px;height:1px;background:linear-gradient(90deg,var(--blue),transparent)}

/* ==========================================================================
   SEÇÕES
   ========================================================================== */
.section{padding:108px 0;border-top:1px solid var(--line);position:relative}
.split{display:grid;grid-template-columns:.86fr 1.14fr;gap:76px;align-items:start}
.split h2{font-size:clamp(29px,3.4vw,44px)}

.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:38px}
.pillars div{padding-top:18px;border-top:1px solid var(--line-strong)}
.pillars strong{display:block;font-size:14px;color:#fff;margin-bottom:6px}
.pillars span{font-size:13.5px;color:var(--muted-2);line-height:1.5}

/* cards */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:52px}
.card{
  position:relative;min-height:272px;padding:26px;border-radius:16px;
  background:linear-gradient(170deg,var(--surface-2) 0%,var(--surface) 100%);
  border:1px solid var(--line);overflow:hidden;
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s;
}
.card::before{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .35s;
  background:radial-gradient(420px 220px at 20% 0%,rgba(22,134,254,.16),transparent 70%);
}
.card:hover{transform:translateY(-6px);border-color:rgba(52,197,253,.28);box-shadow:0 22px 50px rgba(0,0,0,.4)}
.card:hover::before{opacity:1}
.card>*{position:relative}
.card-icon{width:46px;height:46px;margin-bottom:24px}
.card-icon svg{width:100%;height:100%;display:block;transition:transform .35s var(--ease)}
.card:hover .card-icon svg{transform:translateY(-3px) scale(1.06)}
.card-num{margin:0;color:var(--blue-light);font-size:11px;letter-spacing:.2em;font-weight:700}
.card h3{margin:14px 0 12px}
.card p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}

/* método */
.method{background:linear-gradient(180deg,#050D1A,#040A14)}
.method-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:52px;list-style:none;padding:0}
.method-step{position:relative;padding:30px 24px 4px 0;border-top:1px solid var(--line-strong)}
.method-step::after{
  content:"";position:absolute;right:14px;top:-5px;width:9px;height:9px;border-radius:50%;
  background:var(--blue);box-shadow:0 0 0 6px rgba(22,134,254,.1);
}
.method-step:last-child::after{right:0}
.step-icon{width:42px;height:42px;margin-bottom:22px}
.step-icon svg{width:100%;height:100%;display:block}
.step-num{margin:0;color:var(--blue-light);font-size:11px;letter-spacing:.2em;font-weight:700}
.method-step h3{margin:12px 0 9px}
.method-step p{color:var(--muted);font-size:14px;margin:0;line-height:1.6}

/* aplicações */
.apps{background:var(--bg)}
.chips{display:flex;flex-wrap:wrap;gap:11px;margin-top:44px;list-style:none;padding:0}
.chips li{
  padding:11px 18px;border-radius:999px;border:1px solid var(--line-strong);
  font-size:13.5px;color:#C2CBD8;background:rgba(237,241,245,.02);
  transition:.25s var(--ease);
}
.chips li:hover{border-color:rgba(52,197,253,.4);color:#fff;transform:translateY(-2px)}

/* dúvidas frequentes */
.faq{background:linear-gradient(180deg,#050D1A,#040A14)}
.faq-list{margin-top:46px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  position:relative;list-style:none;cursor:pointer;
  padding:24px 56px 24px 0;transition:color .22s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary h3{
  display:inline;font-size:18px;font-weight:600;color:#E4EAF2;
  letter-spacing:-.015em;line-height:1.4;
}
.faq summary:hover h3{color:#fff}
.faq summary::after{
  content:"";position:absolute;right:6px;top:32px;
  width:12px;height:12px;border-right:2px solid var(--blue-light);
  border-bottom:2px solid var(--blue-light);
  transform:rotate(45deg);transition:transform .3s var(--ease);
}
.faq details[open] summary::after{transform:rotate(-135deg)}
.faq details p{
  margin:0;padding:0 60px 26px 0;
  color:var(--muted);font-size:15.5px;line-height:1.68;max-width:82ch;
}
.faq summary:focus-visible{outline:2px solid var(--blue);outline-offset:4px;border-radius:6px}

/* desafio */
.challenge{background:linear-gradient(180deg,#050D1A 0%,#061326 100%)}
.challenge-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:72px;align-items:start}
.flow{display:flex;flex-wrap:wrap;gap:9px;align-items:center;margin-top:32px}
.flow em{display:inline-flex;align-items:center;gap:9px;font-style:normal;white-space:nowrap}
.flow span{padding:9px 13px;border:1px solid var(--line-strong);border-radius:999px;font-size:12px;color:#C2CBD8;white-space:nowrap}
.flow b{color:var(--blue-light)}
.direct{display:flex;flex-direction:column;gap:9px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line);font-style:normal}
.direct a{color:#D3DAE3;font-size:14.5px;width:fit-content;transition:color .2s}
.direct a:hover{color:var(--blue-light)}

form{
  background:rgba(8,17,31,.8);border:1px solid var(--line-strong);
  border-radius:18px;padding:30px;display:grid;gap:15px;
}
.row{display:grid;grid-template-columns:1fr 1fr;gap:15px}
label{font-size:13px;color:#BCC6D3;font-weight:500}
input,textarea,select{
  width:100%;display:block;margin-top:7px;padding:13px 15px;
  border-radius:10px;border:1px solid var(--line-strong);
  background:rgba(4,10,20,.85);color:#fff;font:inherit;font-size:14.5px;
  transition:border-color .2s,box-shadow .2s;
}
input:focus,textarea:focus,select:focus{
  outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(22,134,254,.16);
}
input.invalid,textarea.invalid{border-color:#E5484D}
textarea{min-height:118px;resize:vertical}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#8798AC 50%),linear-gradient(135deg,#8798AC 50%,transparent 50%);background-position:calc(100% - 20px) 22px,calc(100% - 14px) 22px;background-size:6px 6px;background-repeat:no-repeat}
.submit{width:100%;margin-top:4px}
.form-note{font-size:11.5px;color:var(--muted-2);margin:0;line-height:1.5}
.form-note strong{color:#A8B4C4;font-weight:600}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer{border-top:1px solid var(--line);padding:64px 0 24px;background:#02060C}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px}
.footer-brand img{width:250px;height:auto;display:block;margin-bottom:18px}
.footer-brand p{color:var(--muted-2);margin:0;font-size:14.5px;max-width:320px}
.contact-title{margin:0 0 16px;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:#fff;font-weight:700}
.contact a{display:block;margin-top:9px;color:#B9C3D0;font-size:14.5px;transition:color .2s}
.contact a:hover{color:var(--blue-light)}
.footer-base{
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  font-size:12px;color:#54637A;
}

/* WhatsApp flutuante */
.wa-float{
  position:fixed;right:22px;bottom:22px;z-index:90;
  width:52px;height:52px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#1EB35A;color:#fff;
  box-shadow:0 10px 30px rgba(30,179,90,.34);
  transition:transform .25s var(--ease),box-shadow .25s;
}
.wa-float svg{width:27px;height:27px}
.wa-float:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 16px 38px rgba(30,179,90,.45)}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.visible{opacity:1;transform:none}

/* ==========================================================================
   RESPONSIVO
   ========================================================================== */
@media(max-width:1024px){
  .cards{grid-template-columns:1fr 1fr}
  .method-grid{grid-template-columns:1fr 1fr;gap:32px}
  .split,.challenge-grid{grid-template-columns:1fr;gap:44px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1 / -1}
}

@media(max-width:900px){
  .menu-toggle{display:flex}
  .nav-links{
    position:fixed;inset:88px 0 auto;flex-direction:column;align-items:stretch;
    gap:0;padding:14px 20px 26px;
    background:#040A14;
    border-bottom:1px solid var(--line);
    transform:translateY(-14px);opacity:0;visibility:hidden;
    transition:.3s var(--ease);
  }
  .nav-links.open{transform:none;opacity:1;visibility:visible}
  .nav-links a:not(.btn){padding:15px 0;border-bottom:1px solid var(--line);font-size:15px}
  .nav-links .btn{margin-top:18px}
  .hero-grid{grid-template-columns:1fr;gap:48px;min-height:auto;padding-bottom:40px}
  .hero-identity{order:-1;min-height:360px}
  .orbit-1{width:250px;height:250px}
  .orbit-2{width:330px;height:330px}
  .grid-plane{width:300px;height:300px}
  .hero-mark{width:170px}
  .hero-word{width:280px;margin-top:26px}
  .pillars{grid-template-columns:1fr}
}

@media(max-width:760px){
  .faq summary{padding:20px 44px 20px 0}
  .faq summary h3{font-size:16.5px}
  .faq summary::after{top:28px;width:10px;height:10px}
  .faq details p{padding-right:20px;font-size:15px}
}

@media(max-width:600px){
  .container{width:min(calc(100% - 32px),var(--max))}
  .nav{height:74px}
  .nav-links{inset:74px 0 auto}
  .brand{gap:10px}
  .brand-icon{width:32px}
  .brand-word{width:126px}
  .brand-desc{display:none}
  .site-header.scrolled .brand-icon{width:30px}
  .site-header.scrolled .brand-word{width:118px}
  .section{padding:76px 0}
  h1{font-size:clamp(36px,10vw,50px)}
  .hero{padding-top:58px}
  .hero-copy{font-size:16.5px}
  .hero-identity{min-height:280px}
  .orbit-1{width:190px;height:190px}
  .orbit-2{width:248px;height:248px}
  .grid-plane{width:240px;height:240px}
  .hero-mark{width:118px}
  .hero-word{width:196px;margin-top:22px}
  .hero-desc{font-size:9px;letter-spacing:.26em}
  .hero-band{gap:12px;font-size:10px;letter-spacing:.18em}
  .hero-band i{width:20px}
  .cards,.method-grid{grid-template-columns:1fr}
  .card{min-height:auto}
  .method-step{padding-right:0}
  .method-step::after{right:0}
  .row{grid-template-columns:1fr}
  form{padding:22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand img{width:210px}
  .wa-float{right:16px;bottom:16px;width:48px;height:48px}
  .wa-float svg{width:24px;height:24px}
  .intro-inner{width:82vw}
}

/* foco visível em toda a navegação por teclado */
a:focus-visible,button:focus-visible,input:focus-visible,
textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--blue-light);outline-offset:3px;border-radius:6px;
}

/* acessibilidade — movimento reduzido */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
  .la-stem,.la-l,.la-thor,.la-desc,.hm-stem,.hero-word,.hero-copy-col>*{opacity:1;transform:none}
  .la-bar,.la-e rect,.hm-bar{opacity:1;transform:none}
  .reveal{opacity:1;transform:none}
  .scan,.la-sheen{display:none}
}

/* ==========================================================================
   PÁGINAS DE PRODUTO
   O acento é uma variável: cada produto pode ter a própria cor sem
   reescrever nada. O padrão herda o azul da Lethor.
   ========================================================================== */
.produto{ --acento:var(--blue-light); --acento-forte:var(--blue); }

.breadcrumb{
  position:relative;z-index:1;display:flex;gap:10px;align-items:center;flex-wrap:wrap;
  font-size:12.5px;color:var(--muted-2);padding:26px 0 0;
}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--blue-light)}
.breadcrumb span[aria-current]{color:#B9C3D0}

.produto-tag{
  display:inline-flex;align-items:center;gap:9px;margin-bottom:22px;
  padding:7px 15px;border-radius:999px;
  border:1px solid rgba(52,197,253,.32);background:rgba(22,134,254,.09);
  font-size:11px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;
  color:var(--acento);
}

.produto-hero{padding:46px 0 96px;position:relative;overflow:hidden}
.produto-hero .hero-bg{position:absolute;inset:0}
.produto-grid{position:relative;display:grid;grid-template-columns:.94fr 1.06fr;gap:60px;align-items:center}
.produto-hero h1{font-size:clamp(46px,6.4vw,84px);letter-spacing:-.05em;max-width:none}
.produto-hero .sub{
  margin:14px 0 0;font-size:clamp(19px,2.2vw,26px);font-weight:600;
  color:#C7D2E0;letter-spacing:-.02em;max-width:26ch;line-height:1.28;
}
.produto-hero .lead{margin-top:24px;max-width:50ch}
.produto-hero .hero-actions{margin-top:34px}

.cena-produto{
  position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;
  border-radius:18px;border:1px solid var(--line-strong);background:#040A14;
  box-shadow:0 30px 70px rgba(0,0,0,.45);
}
.cena-produto svg,.cena-produto object{display:block;width:100%;height:100%;border:0}
.cena-produto.pausada,.cena-produto.pausada *{animation-play-state:paused !important}

/* faixa de atributos */
.atributos{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border-block:1px solid var(--line)}
.atributos div{background:var(--bg);padding:26px 24px 26px 0}
.atributos strong{display:block;font-size:13px;color:#fff;margin-bottom:5px;letter-spacing:-.01em}
.atributos span{font-size:13px;color:var(--muted-2);line-height:1.5}

/* problema → resposta */
.contraste{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:48px}
.contraste article{padding:30px;border-radius:16px;border:1px solid var(--line)}
.contraste .antes{background:linear-gradient(170deg,#150E12,#0B0A0D)}
.contraste .depois{background:linear-gradient(170deg,var(--surface-2),var(--surface));
  border-color:rgba(52,197,253,.22)}
.contraste h3{font-size:15px;letter-spacing:.16em;text-transform:uppercase;margin-bottom:20px}
.contraste .antes h3{color:#C9868C}
.contraste .depois h3{color:var(--acento)}
.contraste ul{list-style:none;padding:0;margin:0;display:grid;gap:13px}
.contraste li{position:relative;padding-left:26px;color:var(--muted);font-size:15px;line-height:1.55}
.contraste li::before{position:absolute;left:0;top:0;font-weight:700}
.contraste .antes li::before{content:"×";color:#C9868C;font-size:17px;line-height:1.4}
.contraste .depois li::before{content:"✓";color:var(--acento)}

/* fluxo em etapas */
.etapas{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:52px;
  list-style:none;padding:0;counter-reset:et}
.etapas li{position:relative;padding:26px 18px 24px;border-radius:14px;
  background:linear-gradient(170deg,var(--surface-2),var(--surface));
  border:1px solid var(--line);counter-increment:et}
.etapas li::before{
  content:counter(et,decimal-leading-zero);display:block;
  font-size:11px;font-weight:700;letter-spacing:.2em;color:var(--acento);margin-bottom:14px;
}
.etapas b{display:block;font-size:16px;margin-bottom:7px;letter-spacing:-.015em}
.etapas span{font-size:13.5px;color:var(--muted);line-height:1.5}

/* blocos de tela */
.tela-bloco{display:grid;grid-template-columns:.8fr 1.2fr;gap:54px;align-items:center;
  padding:46px 0;border-top:1px solid var(--line)}
.tela-bloco:first-of-type{border-top:0;padding-top:8px}
.tela-bloco.invertido .tela-txt{order:2}
.tela-bloco.invertido .tela-img{order:1}
.tela-bloco h3{font-size:clamp(23px,2.6vw,30px);margin-bottom:15px}
.tela-bloco p{color:var(--muted);font-size:16.5px;line-height:1.6;margin:0}
.tela-lista{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:10px}
.tela-lista li{position:relative;padding-left:26px;color:#C2CBD8;font-size:14.5px;line-height:1.5}
.tela-lista li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;
  background:linear-gradient(120deg,var(--acento),var(--acento-forte))}

/* moldura comum das capturas */
.tela-img{display:flex;justify-content:center}
.tela-img img{display:block;height:auto;border-radius:14px}
.tela-img.painel img{width:100%;border:1px solid var(--line-strong);
  box-shadow:0 26px 60px rgba(0,0,0,.45)}

/* dois aparelhos lado a lado, sobre um fundo que os ancora */
.tela-duo{
  display:grid;grid-template-columns:1fr 1fr;gap:26px;width:100%;align-items:stretch;
  padding:40px 32px 34px;border-radius:20px;
  background:radial-gradient(120% 100% at 50% 0%,rgba(22,134,254,.10),transparent 62%),
             linear-gradient(170deg,var(--surface-2),var(--surface));
  border:1px solid var(--line);
}
.tela-duo figure{margin:0;display:flex;flex-direction:column;align-items:center;
  justify-content:space-between;gap:18px}
.tela-duo img{width:100%;max-width:230px;height:auto;border-radius:12px;
  filter:drop-shadow(0 22px 44px rgba(0,0,0,.55))}
.tela-duo figcaption{
  font-size:11.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--acento);text-align:center;
}

/* duas capturas de painel em paralelo, com legenda própria */
.tela-par{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:46px}
.tela-par article{display:flex;flex-direction:column}
.tela-par img{width:100%;height:auto;display:block;border-radius:12px;
  border:1px solid var(--line-strong);box-shadow:0 20px 46px rgba(0,0,0,.42)}
.tela-par h3{font-size:21px;margin:24px 0 10px}
.tela-par p{color:var(--muted);font-size:15px;line-height:1.58;margin:0}
.tela-par .tela-lista{margin-top:18px}
.tela-par .tela-lista li{font-size:14px}

/* arquitetura */
.pilha{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:46px}
.pilha div{padding:24px;border-radius:14px;border:1px solid var(--line);
  background:linear-gradient(170deg,var(--surface-2),var(--surface))}
.pilha b{display:block;font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--acento);margin-bottom:12px}
.pilha p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.55}

/* chamada final */
.cta-produto{
  margin-top:0;padding:74px 0;
  background:linear-gradient(180deg,#050D1A,#061326);
  border-top:1px solid var(--line);text-align:center;
}
.cta-produto h2{max-width:20ch;margin-inline:auto}
.cta-produto .lead{max-width:56ch;margin:22px auto 0}
.cta-produto .hero-actions{justify-content:center;margin-top:34px}

/* vitrine de produtos */
.vitrine{display:grid;grid-template-columns:repeat(auto-fit,minmax(330px,1fr));gap:20px;margin-top:52px}
.vitrine-card{max-width:680px}
.vitrine-card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  border-radius:18px;border:1px solid var(--line);background:var(--surface);
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s;
}
.vitrine-card:hover{transform:translateY(-5px);border-color:rgba(52,197,253,.3);
  box-shadow:0 24px 54px rgba(0,0,0,.42)}
.vitrine-card .capa{aspect-ratio:16/9;background:#040A14;border-bottom:1px solid var(--line)}
.vitrine-card .capa img,.vitrine-card .capa object{display:block;width:100%;height:100%;border:0;pointer-events:none}
.vitrine-card .txt{padding:28px}
.vitrine-card h3{font-size:24px;margin-bottom:10px}
.vitrine-card p{color:var(--muted);font-size:15px;line-height:1.55;margin:0}
.vitrine-card .seta{display:inline-flex;align-items:center;gap:9px;margin-top:20px;
  font-size:13.5px;font-weight:700;color:var(--blue-light)}

/* convite para o próximo produto — separado da vitrine de propósito,
   para nunca ser lido como legenda do produto que está acima */
.proximo-produto{
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
  max-width:1000px;
  margin-top:26px;padding:34px 36px;border-radius:18px;
  border:1px dashed var(--line-strong);background:rgba(237,241,245,.015);
}
.proximo-produto h3{font-size:clamp(20px,2.2vw,26px);margin-bottom:10px;max-width:34ch}
.proximo-produto p{margin:0;color:var(--muted);font-size:15.5px;line-height:1.55;max-width:62ch}
.proximo-produto .btn{flex-shrink:0}
.vitrine-card.futuro h3{color:#8B98A8}

@media(max-width:1024px){
  .produto-grid{grid-template-columns:1fr;gap:44px}
  .produto-grid .txt{order:-1}
  .atributos{grid-template-columns:1fr 1fr}
  .atributos div{padding-right:24px}
  .etapas{grid-template-columns:repeat(2,1fr)}
  .tela-bloco{grid-template-columns:1fr;gap:34px;padding:38px 0}
  .tela-bloco:first-of-type{padding-top:34px}
  .tela-bloco.invertido .tela-txt,.tela-bloco.invertido .tela-img{order:initial}
  .tela-par{grid-template-columns:1fr;gap:44px}
  .pilha{grid-template-columns:1fr}
  .vitrine{grid-template-columns:1fr}
  .proximo-produto{padding:28px 24px;gap:24px}
}
@media(max-width:600px){
  .produto-hero{padding:30px 0 66px}
  .contraste{grid-template-columns:1fr}
  .atributos{grid-template-columns:1fr}
  .etapas{grid-template-columns:1fr}
  .tela-duo{grid-template-columns:1fr;gap:34px;padding:32px 22px}
  .tela-duo img{max-width:210px}
  .cta-produto{padding:58px 0}
}

/* redes sociais no rodapé */
.social{display:flex;gap:10px;margin-top:18px}
.social a{
  display:grid;place-items:center;width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line-strong);color:#AEBACA;background:rgba(237,241,245,.02);
  transition:color .22s,border-color .22s,transform .22s var(--ease),background .22s;
}
.social a:hover{
  color:#fff;border-color:rgba(52,197,253,.45);
  background:rgba(22,134,254,.12);transform:translateY(-2px);
}
.social svg{width:17px;height:17px;display:block}

/* campo-armadilha do anti-spam: fora da tela, sem display:none
   (robô ignora display:none; este ele preenche e se entrega) */
.armadilha{
  position:absolute;left:-9999px;top:auto;width:1px;height:1px;
  overflow:hidden;opacity:0;pointer-events:none;
}
/* aviso de erro do formulário */
.form-aviso{
  margin:0;padding:12px 14px;border-radius:10px;font-size:14px;line-height:1.5;
  background:rgba(216,68,68,.12);border:1px solid rgba(216,68,68,.4);color:#F0B4B6;
}

/* ==========================================================================
   SIMULADOR DE ARMAZÉM 3D
   Peças da página do produto e a janela onde o simulador roda.
   ========================================================================== */

/* ---- capa da página, com um pulso curto nos blocos --------------------- */
.sim-capa{position:relative;width:100%;height:100%}
.sim-capa img{display:block;width:100%;height:100%;object-fit:cover}

.sim-play{
  position:absolute;left:50%;bottom:22px;transform:translateX(-50%);
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 22px;border-radius:999px;cursor:pointer;
  font:600 15px/1 Inter,"Inter Fallback",-apple-system,Segoe UI,Arial,sans-serif;
  color:#fff;border:1px solid rgba(52,197,253,.45);
  background:rgba(9,92,253,.86);backdrop-filter:blur(8px);
  box-shadow:0 12px 34px rgba(0,0,0,.5);
  transition:background .2s,transform .2s var(--ease),border-color .2s;
}
.sim-play:hover{background:var(--blue);transform:translateX(-50%) translateY(-2px)}
.sim-play:focus-visible{outline:2px solid var(--blue-light);outline-offset:3px}
.sim-play-i{font-size:11px;line-height:1}

/* ---- a tabela de limites ---------------------------------------------- */
.limites{
  margin-top:34px;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  background:linear-gradient(170deg,var(--surface-2),var(--surface));
}
.limites-cab,.limites-l{
  display:grid;grid-template-columns:1.5fr 1fr 1.35fr;gap:18px;
  padding:13px 22px;align-items:baseline;
}
.limites-l{border-top:1px solid var(--line)}
.limites-cab{
  font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2);
  background:rgba(237,241,245,.03);
}
.limites-cab b{font-weight:700;color:var(--muted-2)}
.limites-cab b:last-child{color:var(--blue-light)}
.limites-l span{color:var(--muted);font-size:14.5px;line-height:1.45}
.limites-l b{font-size:14.5px;font-weight:600;color:var(--text);font-variant-numeric:tabular-nums}
.limites-l b:last-child{color:var(--blue-light)}

@media (max-width:720px){
  .limites-cab{display:none}
  .limites-l{grid-template-columns:1fr;gap:4px;padding:15px 18px}
  .limites-l b::before{
    content:"Grátis: ";font-weight:400;color:var(--muted-2);font-size:13px;
  }
  .limites-l b:last-child::before{content:"Contratada: "}
}

/* ---- a janela do simulador --------------------------------------------
   Ele roda isolado num quadro próprio: o CSS do site e o CSS do simulador
   nunca se encontram, e o motor 3D só é baixado se alguém entrar.
   ----------------------------------------------------------------------- */
.sim-janela{position:fixed;inset:0;z-index:200;background:#040A14}
.sim-janela[hidden]{display:none}
.sim-janela iframe{position:absolute;inset:0;width:100%;height:100%;border:0;display:block}

.sim-carregando{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:12px;
  color:var(--muted);font-size:14.5px;background:#040A14;pointer-events:none;
}
.sim-giro{
  width:18px;height:18px;border-radius:50%;
  border:2px solid rgba(52,197,253,.25);border-top-color:var(--blue-light);
  animation:sim-gira .8s linear infinite;
}
@keyframes sim-gira{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){ .sim-giro{animation-duration:2.4s} }

.sim-fechar{
  position:absolute;right:14px;bottom:14px;z-index:2;
  padding:9px 16px;border-radius:999px;cursor:pointer;
  font:600 13px/1 Inter,"Inter Fallback",-apple-system,Segoe UI,Arial,sans-serif;
  color:var(--text);background:rgba(6,19,38,.92);border:1px solid var(--line-strong);
  backdrop-filter:blur(8px);
}
.sim-fechar:hover{border-color:rgba(52,197,253,.45);color:#fff}
.sim-fechar:focus-visible{outline:2px solid var(--blue-light);outline-offset:2px}

/* capa da vitrine desenhada em SVG inline, sem <object> e sem imagem */
.vitrine-card .capa img{object-fit:cover}

/* seis leituras: três por linha, para não sobrar meia fileira vazia */
.cards.tres{grid-template-columns:repeat(3,1fr)}
@media(max-width:1024px){ .cards.tres{grid-template-columns:repeat(2,1fr)} }
@media(max-width:640px){ .cards.tres{grid-template-columns:1fr} }

/* Easter egg da Lethor: elefante quase imperceptível no rodapé. */
.footer-base > span:last-child::after{
  content:"";
  display:inline-block;
  width:17px;height:13px;
  margin-left:7px;
  vertical-align:-2px;
  background:url("/assets/brand/elephant-easteregg.svg") center/contain no-repeat;
  opacity:.09;
  pointer-events:none;
  transition:opacity .28s var(--ease);
}
.footer-base > span:last-child:hover::after{opacity:.16}