/* Bert Connect — estilo do site (HTML/CSS/JS estáticos, sem dependências externas) */
:root{
  --bg:#040509; --bg2:#080d18; --panel:#0b1220; --line:#1b2a47;
  --blue:#1677ff; --blue2:#2f7dff; --cyan:#22d3ee;
  --text:#f2f6ff; --muted:#a9b8d2; --radius:18px;
  --font:Inter,"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--cyan)}
h1,h2,h3,h4{line-height:1.15;margin:0 0 .5em;letter-spacing:-.01em}
p{margin:0 0 1em}
.wrap{width:min(1160px,92vw);margin-inline:auto}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--blue);color:#fff;padding:10px 16px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* Botões */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:10px 22px;border-radius:999px;border:1.5px solid transparent;font:600 .95rem/1.2 var(--font);text-decoration:none;cursor:pointer;transition:transform .18s,box-shadow .18s,background .18s,border-color .18s;text-align:center}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#2c86ff;box-shadow:0 6px 24px rgba(22,119,255,.38);transform:translateY(-1px)}
.btn-outline{border-color:var(--blue2);color:var(--text);background:transparent}
.btn-outline:hover{background:rgba(22,119,255,.14)}
.btn-ghost{color:var(--cyan);border-color:rgba(34,211,238,.4)}
.btn-ghost:hover{background:rgba(34,211,238,.1)}
.btn:active{transform:translateY(1px);box-shadow:none}

/* Cabeçalho */
.site-header{position:sticky;top:0;z-index:50;background:rgba(4,5,9,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
.brand img{height:50px;width:auto}
.menu{display:flex;align-items:center;gap:6px}
.menu a:not(.btn){color:var(--text);text-decoration:none;padding:10px 12px;border-radius:8px;font-weight:500;font-size:.95rem}
.menu a:not(.btn):hover{color:var(--cyan)}
.menu-cta{margin-left:8px;min-height:40px;padding:8px 18px}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:46px;height:46px;cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.menu-btn span{display:block;width:22px;height:2px;background:var(--text);transition:transform .2s,opacity .2s}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Hero */
.hero{position:relative;padding:clamp(48px,9vw,110px) 0;overflow:hidden;background:radial-gradient(900px 480px at 80% 30%,rgba(22,119,255,.22),transparent 65%),linear-gradient(var(--bg),var(--bg2))}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(47,125,255,.2) 1px,transparent 1.2px);background-size:22px 22px;mask-image:linear-gradient(90deg,transparent,#000 70%);-webkit-mask-image:linear-gradient(90deg,transparent,#000 70%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{color:var(--cyan);text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;margin-bottom:14px}
h1{font-size:clamp(2.5rem,6.4vw,4.6rem);font-weight:800}
h1 em{font-style:normal;background:linear-gradient(90deg,var(--blue2),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.sub{font-size:clamp(1.15rem,2.4vw,1.5rem);font-weight:600;margin:18px 0 10px}
.lead{color:var(--muted);font-size:1.08rem;max-width:56ch}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-visual{position:relative;min-height:340px;display:grid;place-items:center}
.tap-card{position:relative;z-index:2;width:min(300px,78%);aspect-ratio:1.6;background:linear-gradient(135deg,#1b2335,#0a0e18);border:1.5px solid var(--blue2);border-radius:22px;display:grid;place-items:center;box-shadow:0 0 50px rgba(22,119,255,.28);transform:rotate(-6deg)}
.tap-card img{width:62%;mix-blend-mode:screen}
.chip-nfc{position:absolute;right:16px;bottom:12px;font-size:.72rem;font-weight:700;color:var(--cyan);border:1px solid rgba(34,211,238,.5);padding:2px 8px;border-radius:6px}
.phone{position:absolute;right:6%;bottom:2%;width:90px;height:170px;border:2px solid var(--line);border-radius:18px;background:#070b14;transform:rotate(12deg)}
.phone span{position:absolute;left:50%;top:8px;width:30px;height:4px;background:var(--line);border-radius:4px;transform:translateX(-50%)}
.pulse{position:absolute;right:22%;bottom:18%;width:80px;height:80px;border:2px solid var(--cyan);border-radius:50%;opacity:0;animation:pulse 3.2s ease-out infinite}
.pulse.p2{animation-delay:1.6s}
@keyframes pulse{0%{transform:scale(.4);opacity:.7}100%{transform:scale(2.4);opacity:0}}

/* Seções */
.section{padding:clamp(56px,8vw,96px) 0}
.section.alt{background:var(--bg2);border-block:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2,.card-grid h2,.catalog-text h2{font-size:clamp(1.9rem,4vw,2.7rem);font-weight:800}
.section-head p:last-child{color:var(--muted)}
.fine{color:var(--muted);font-size:.86rem;margin-top:18px}
.center{text-align:center;margin-top:30px}

/* Filtros */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.filter{background:transparent;color:var(--text);border:1px solid var(--line);border-radius:999px;padding:9px 18px;min-height:42px;font:500 .92rem var(--font);cursor:pointer;transition:background .18s,border-color .18s}
.filter:hover{border-color:var(--blue2)}
.filter.is-active{background:var(--blue);border-color:var(--blue);color:#fff}

/* Cards de produto */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{display:flex;flex-direction:column;background:linear-gradient(180deg,#0c1424,#080d18);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .22s,border-color .22s,box-shadow .22s}
.card[hidden]{display:none}
.card-media{position:relative;aspect-ratio:8/5;background:#05070c;border-bottom:1px solid var(--line)}
.card-media img{width:100%;height:100%;object-fit:cover}
.tag-illus{position:absolute;left:10px;top:10px;font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;background:rgba(4,5,9,.8);border:1px solid var(--line);color:var(--muted);padding:2px 8px;border-radius:999px}
.card-body{display:flex;flex-direction:column;flex:1;padding:22px}
.card h3{font-size:1.2rem}
.desc{color:var(--muted);font-size:.95rem}
.card h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;color:var(--cyan);margin:6px 0 10px}
.vlist{list-style:none;margin:0 0 14px;padding:0;display:grid;gap:9px;font-size:.92rem}
.vlist li{display:flex;gap:10px;align-items:flex-start}
.ck{flex:none;width:18px;height:18px;margin-top:3px;fill:none;stroke:var(--cyan);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.note{font-size:.8rem;color:var(--muted);border-left:2px solid var(--blue2);padding-left:10px;margin-bottom:16px}
.card-cta{margin-top:auto}
@media (hover:hover){.card:hover{transform:translateY(-4px);border-color:var(--blue2);box-shadow:0 10px 40px rgba(22,119,255,.18)}}

/* Vantagens */
.adv-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.adv,.seg,.step{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:relative}
.adv h3,.seg h3,.step h3{font-size:1.05rem;margin-top:12px}
.adv p,.seg p,.step p{color:var(--muted);font-size:.92rem;margin:0}
.ic{width:34px;height:34px;fill:none;stroke:var(--cyan);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;padding:6px;box-sizing:content-box;background:rgba(22,119,255,.14);border-radius:12px}
.callout{margin-top:26px;border:1px solid var(--line);border-left:3px solid var(--cyan);background:rgba(34,211,238,.05);padding:16px 20px;border-radius:12px;color:var(--muted);font-size:.93rem}
.callout strong{color:var(--text)}

/* Como funciona */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:s}
.num{position:absolute;right:18px;top:14px;font-weight:800;color:rgba(47,125,255,.5);font-size:1.5rem}

/* Cartão */
.card-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:center}
.quote{font-size:1.35rem;font-weight:700;margin-bottom:4px}
.sig{color:var(--cyan);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:.85rem}
.contact-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:12px}
.contact-list li{display:flex;align-items:center;gap:12px}
.contact-list .ic{width:22px;height:22px}
.contact-list a{color:var(--text);font-weight:600}
.card-mock{margin:0;border:1px solid var(--blue2);border-radius:20px;padding:10px;background:#05070c;box-shadow:0 0 60px rgba(22,119,255,.22)}
.card-mock img{border-radius:12px;width:100%}
.card-mock figcaption{text-align:center;color:var(--muted);font-size:.82rem;margin-top:8px}

/* Catálogo */
.catalog{display:grid;grid-template-columns:260px 1fr;gap:44px;align-items:center;background:linear-gradient(135deg,#0c1424,#080d18);border:1px solid var(--line);border-radius:24px;padding:clamp(22px,4vw,44px)}
.cover{display:block;border-radius:12px;overflow:hidden;border:1px solid var(--blue2);box-shadow:0 0 40px rgba(22,119,255,.25);transition:transform .22s}
@media (hover:hover){.cover:hover{transform:translateY(-4px) rotate(-1deg)}}
.pdf-box{margin-top:22px}
.pdf-box iframe{width:100%;height:min(80vh,820px);border:1px solid var(--line);border-radius:14px;background:#fff}

/* Segmentos */
.seg-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}

/* Contato */
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:22px;align-items:start}
.contact-cards{display:grid;gap:22px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.panel .ic{margin-bottom:6px}
.panel p{color:var(--muted)}
.form label{display:block;font-weight:600;font-size:.9rem;margin:14px 0 6px}
.form input,.form select,.form textarea{width:100%;background:#05070c;color:var(--text);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font:1rem var(--font)}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--cyan);outline:none;box-shadow:0 0 0 3px rgba(34,211,238,.25)}
.form .btn{margin-top:18px;width:100%}

/* Rodapé */
.site-footer{border-top:1px solid var(--line);background:#030407;padding:34px 0 18px}
.foot{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:28px;align-items:center}
.foot-brand{display:flex;align-items:center;gap:14px}
.foot-brand img{width:90px}
.foot-brand p{margin:0;color:var(--muted);font-size:.9rem}
.foot nav,.foot-contact{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:.9rem}
.foot-contact{flex-direction:column;gap:6px}
.foot a{color:var(--muted);text-decoration:none}
.foot a:hover{color:var(--cyan)}
.copy{text-align:center;color:var(--muted);font-size:.8rem;margin:24px 0 0;border-top:1px solid var(--line);padding-top:16px}

/* Responsivo */
@media (max-width:1040px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .adv-grid,.steps,.seg-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .menu-btn{display:flex}
  .menu{position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;background:rgba(4,5,9,.97);border-bottom:1px solid var(--line);padding:12px 4vw 18px;display:none}
  .menu.open{display:flex}
  .menu a:not(.btn){padding:14px 10px}
  .menu-cta{margin:8px 0 0}
  .hero-grid,.card-grid,.catalog,.contact-grid{grid-template-columns:1fr}
  .hero-visual{min-height:260px;order:-1}
  .catalog{gap:24px}.cover{max-width:240px;margin-inline:auto}
  .foot{grid-template-columns:1fr}
}
@media (max-width:620px){
  .grid,.adv-grid,.steps,.seg-grid{grid-template-columns:1fr}
  .actions .btn{width:100%}
  .brand img{height:44px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}