/* =========================================================
   JDB Teck — folha de estilos do site
   Layout: folha de desenho técnico (moldura, zonas, carimbo)
   sobre fundo inox claro; faixas escuras imitam a tela do
   software de simulação. Cores definidas uma vez como tokens.
   ========================================================= */
:root{
  --paper:#ECEFF2; --sheet:#F8F9FA; --ink:#0E1B27; --ink-2:#4A5866; --rule:#C4CDD5; --grid:rgba(14,27,39,.055);
  --azul:#1F49C7; --azul-hover:#173A9E; --on-azul:#FFFFFF; --azul-suave:rgba(31,73,199,.08);
  --critico:#C9341A; --atencao:#A86F00; --monitorar:#0B8261;
  --header-bg:rgba(236,239,242,.94);
  --band-bg:#0F1C28; --band-card:#152532; --band-fg:#E7EDF1; --band-fg-2:#9FB1C0; --band-rule:#273A48;
  --shadow:0 1px 0 rgba(14,27,39,.04),0 12px 32px -18px rgba(14,27,39,.35);
  --sheen:rgba(255,255,255,.45);
  --fea-0:#1b2ad9; --fea-1:#1ea0ff; --fea-2:#1fd38a; --fea-3:#f3e21a; --fea-4:#ff8a00; --fea-5:#e3261d;
  --fea:linear-gradient(90deg,var(--fea-0),var(--fea-1) 22%,var(--fea-2) 45%,var(--fea-3) 66%,var(--fea-4) 83%,var(--fea-5));
  --f-display:"Archivo","Arial Narrow",Arial,sans-serif;
  --f-body:"IBM Plex Sans","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --larg:1240px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#0B131A; --sheet:#111C25; --ink:#E4EAEE; --ink-2:#9AA9B5; --rule:#263440; --grid:rgba(228,234,238,.045);
    --azul:#7E9DFF; --azul-hover:#A3BAFF; --on-azul:#0B131A; --azul-suave:rgba(126,157,255,.10);
    --critico:#FF6E52; --atencao:#F2B93B; --monitorar:#3ED3A2;
    --header-bg:rgba(11,19,26,.92);
    --band-bg:#060C11; --band-card:#0F1A23; --band-fg:#E4EAEE; --band-fg-2:#93A3B0; --band-rule:#1C2A35;
    --shadow:0 1px 0 rgba(0,0,0,.3),0 16px 36px -20px rgba(0,0,0,.8); --sheen:rgba(255,255,255,.05);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#0B131A; --sheet:#111C25; --ink:#E4EAEE; --ink-2:#9AA9B5; --rule:#263440; --grid:rgba(228,234,238,.045);
  --azul:#7E9DFF; --azul-hover:#A3BAFF; --on-azul:#0B131A; --azul-suave:rgba(126,157,255,.10);
  --critico:#FF6E52; --atencao:#F2B93B; --monitorar:#3ED3A2;
  --header-bg:rgba(11,19,26,.92);
  --band-bg:#060C11; --band-card:#0F1A23; --band-fg:#E4EAEE; --band-fg-2:#93A3B0; --band-rule:#1C2A35;
  --shadow:0 1px 0 rgba(0,0,0,.3),0 16px 36px -20px rgba(0,0,0,.8); --sheen:rgba(255,255,255,.05);
  color-scheme:dark;
}

/* ---------- Base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--paper)}
img,video,canvas{max-width:100%;display:block}
img{height:auto}
a{color:var(--azul);text-underline-offset:3px}
a:hover{color:var(--azul-hover)}
:focus-visible{outline:2px solid var(--azul);outline-offset:3px}
h1,h2,h3,h4{font-family:var(--f-display);font-stretch:112%;line-height:1.1;margin:0;text-wrap:balance;letter-spacing:-.005em}
h1{font-weight:820}
h2{font-weight:780}
h3{font-weight:720}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
table{border-collapse:collapse}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.pular{position:absolute;left:12px;top:-60px;z-index:100;background:var(--azul);color:var(--on-azul);padding:10px 14px;border-radius:3px;font-weight:600}
.pular:focus{top:12px}

.wrap{max-width:var(--larg);margin-inline:auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
@media (min-width:700px){.wrap{padding-left:max(32px,env(safe-area-inset-left,0px));padding-right:max(32px,env(safe-area-inset-right,0px))}}

.eyebrow{font-family:var(--f-mono);font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);display:flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:22px;height:0;border-top:1.5px solid currentColor;flex:none}
.lead{font-size:1.125rem;color:var(--ink-2);max-width:64ch}
.mono{font-family:var(--f-mono)}
.num{font-variant-numeric:tabular-nums}
.muted{color:var(--ink-2)}
.peq{font-size:.86rem}

/* ---------- Botões ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:var(--f-body);font-weight:600;font-size:.95rem;line-height:1;padding:14px 20px;border-radius:3px;border:1.5px solid var(--azul);background:var(--azul);color:var(--on-azul);text-decoration:none;cursor:pointer;transition:background .15s,border-color .15s,transform .15s}
.btn:hover{background:var(--azul-hover);border-color:var(--azul-hover);color:var(--on-azul)}
.btn:active{transform:translateY(1px)}
.btn.sec-btn{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn.sec-btn:hover{background:var(--ink);color:var(--paper)}
.btn.peq-btn{padding:9px 14px;font-size:.85rem}
.btn svg{width:16px;height:16px;flex:none}
.link-seta{font-weight:600;text-decoration:none;display:inline-flex;align-items:center;gap:6px}
.link-seta::after{content:"→";transition:transform .15s}
.link-seta:hover::after{transform:translateX(3px)}

/* ---------- Marca ---------- */
.marca{width:auto;height:100%;color:var(--ink);overflow:visible}
.marca .m-quente{fill:var(--critico)}
.marca .m-morno{fill:var(--atencao)}
.marca .m-eixo{stroke:var(--azul)}

/* ---------- Cabeçalho e menu ---------- */
.topo{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:var(--header-bg);backdrop-filter:saturate(1.2) blur(10px);-webkit-backdrop-filter:saturate(1.2) blur(10px);border-bottom:1px solid var(--rule);min-height:68px}
.topo::before{content:"";display:block;height:3px;background:var(--fea)}
.topo-in{display:flex;align-items:center;gap:20px;min-height:64px;position:relative}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);flex:none}
.logo:hover{color:var(--ink)}
.logo svg{height:34px}
.logo-txt{display:flex;flex-direction:column;line-height:1}
.logo-txt b{font-family:var(--f-display);font-stretch:118%;font-weight:850;font-size:1.35rem;letter-spacing:.02em}
.logo-txt small{font-family:var(--f-mono);font-size:.58rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-2);margin-top:4px}
.menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.menu > li{position:relative}
.menu a.item,.menu button.item{display:flex;align-items:center;gap:6px;font:500 .92rem var(--f-body);color:var(--ink);text-decoration:none;padding:9px 12px;border-radius:3px;background:none;border:0;cursor:pointer}
.menu a.item:hover,.menu button.item:hover,.menu li:focus-within > .item{background:var(--grid);color:var(--ink)}
.menu .item.ativo{color:var(--azul)}
.menu .item.ativo::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--azul)}
.menu button.item svg{width:10px;height:10px;transition:transform .15s}
.sub{position:absolute;top:calc(100% + 6px);left:-8px;min-width:280px;background:var(--sheet);border:1px solid var(--rule);border-top:2px solid var(--ink);box-shadow:var(--shadow);padding:8px;display:none;z-index:5}
.sub::before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px}
.menu li.aberto > .sub{display:block}
@media (hover:hover) and (min-width:1101px){.menu li:hover > .sub{display:block}}
.sub a{display:grid;gap:2px;padding:10px 12px;border-radius:3px;text-decoration:none;color:var(--ink)}
.sub a:hover,.sub a.ativo{background:var(--azul-suave);color:var(--ink)}
.sub a b{font-weight:600;font-size:.93rem}
.sub a span{font-size:.8rem;color:var(--ink-2)}
.sub a.ativo b{color:var(--azul)}
.menu .btn{margin-left:10px;padding:11px 16px}
.menu-btn{display:none;margin-left:auto;background:transparent;border:1.5px solid var(--ink);color:var(--ink);border-radius:3px;padding:8px 12px;font:600 .85rem var(--f-body);cursor:pointer;align-items:center;gap:8px}
.menu-btn span{display:block;width:16px;height:10px;border-top:2px solid currentColor;border-bottom:2px solid currentColor;position:relative}
.menu-btn span::after{content:"";position:absolute;left:0;right:0;top:2px;border-top:2px solid currentColor}
@media (max-width:1100px){
  .menu-btn{display:inline-flex}
  .menu{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;background:var(--sheet);border-bottom:2px solid var(--ink);padding:6px max(16px,env(safe-area-inset-right,0px)) 18px max(16px,env(safe-area-inset-left,0px));box-shadow:var(--shadow);max-height:calc(100vh - 80px);overflow:auto}
  .menu > li{border-bottom:1px solid var(--rule)}
  .menu a.item,.menu button.item{width:100%;padding:14px 4px;justify-content:space-between;font-size:1rem}
  .menu .item.ativo::after{display:none}
  .sub{position:static;display:none;box-shadow:none;border:0;border-left:2px solid var(--azul);margin:0 0 10px 4px;padding:0 0 0 8px;min-width:0;background:transparent}
  .menu li.aberto > .sub{display:block}
  .menu li.aberto > button.item svg{transform:rotate(180deg)}
  .menu > li:last-child{border-bottom:0}
  .menu .btn{margin:16px 0 0;width:100%}
  body.menu-aberto .menu{display:flex}
}

/* ---------- Cabeçalho de página interna ---------- */
.cab{position:relative;padding-block:clamp(36px,6vw,72px) clamp(32px,5vw,56px);border-bottom:1px solid var(--rule);background-color:var(--sheet);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:20px 20px}
.cab-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:end}
.cab h1{font-size:clamp(2rem,4.4vw,3.4rem);margin-top:14px;max-width:20ch}
.cab .lead{margin-top:16px}
.trilha{font-family:var(--f-mono);font-size:.72rem;color:var(--ink-2);display:flex;flex-wrap:wrap;gap:6px;letter-spacing:.04em}
.trilha a{color:var(--ink-2);text-decoration:none}
.trilha a:hover{color:var(--azul)}
.carimbo-mini{display:grid;grid-template-columns:auto auto;border:2px solid var(--ink);background:var(--sheet);font-size:.82rem;min-width:240px}
.carimbo-mini div{padding:6px 10px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.carimbo-mini div:nth-child(2n){border-right:0}
.carimbo-mini div:nth-last-child(-n+2){border-bottom:0}
.carimbo-mini small{display:block;font-family:var(--f-mono);font-size:.58rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2)}
.carimbo-mini span{font-weight:600}
@media (max-width:800px){.cab-grid{grid-template-columns:minmax(0,1fr)}.carimbo-mini{display:none}}

/* ---------- Seções ---------- */
.sec{padding-block:clamp(56px,8vw,104px)}
.sec + .sec{border-top:1px solid var(--rule)}
.sec.compacta{padding-block:clamp(40px,6vw,72px)}
.sec-head{display:grid;gap:14px;margin-bottom:clamp(28px,4.5vw,48px);max-width:820px}
.sec-head h2,.h2{font-size:clamp(1.75rem,3.2vw,2.6rem)}
.sec-head.linha{max-width:none;grid-template-columns:minmax(0,1fr) auto;align-items:end}
@media (max-width:700px){.sec-head.linha{grid-template-columns:minmax(0,1fr)}}
.dois{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,72px);align-items:start}
.dois.centro{align-items:center}
.dois.l60{grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr)}
.dois.l40{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr)}
@media (max-width:900px){.dois,.dois.l60,.dois.l40{grid-template-columns:minmax(0,1fr)}}
.texto{display:grid;gap:16px;max-width:66ch;align-content:start}
.texto p,.texto li{color:var(--ink-2)}
.texto p strong,.texto li strong{color:var(--ink);font-weight:600}
.texto h3{font-size:1.25rem;margin-top:8px}
.lista{display:grid;gap:10px}
.lista li{display:grid;grid-template-columns:18px minmax(0,1fr);gap:10px}
.lista li::before{content:"";width:8px;height:8px;margin-top:9px;background:var(--azul)}
.lista.critica li::before{width:10px;height:10px;margin-top:8px;background:transparent;border:2px solid var(--critico);transform:rotate(45deg)}

/* ---------- Figuras ---------- */
.fig{display:grid;gap:10px;align-content:start}
.fig-box{display:block;background:#fff;border:1px solid var(--rule);box-shadow:var(--shadow);overflow:hidden}
.fig-box img{width:100%}
.fig-box.transp{background:transparent;border:0;box-shadow:none}
.fig figcaption{font-size:.84rem;color:var(--ink-2)}
.fig figcaption b{color:var(--ink);font-weight:600}
a.zoom{cursor:zoom-in}

/* ---------- Faixa escura ---------- */
.faixa{background:var(--band-bg);color:var(--band-fg);padding-block:clamp(56px,8vw,104px)}
.faixa .eyebrow,.faixa .lead,.faixa .muted{color:var(--band-fg-2)}
.faixa h2,.faixa h3{color:var(--band-fg)}
.faixa a:not(.btn){color:#9DB5FF}

/* ---------- Cartões ---------- */
.cards{display:grid;gap:16px}
.c2{grid-template-columns:repeat(2,minmax(0,1fr))}
.c3{grid-template-columns:repeat(3,minmax(0,1fr))}
.c4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1080px){.c4{grid-template-columns:repeat(2,minmax(0,1fr))}.c3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.c2,.c3,.c4{grid-template-columns:minmax(0,1fr)}}
.card{border:1px solid var(--rule);background:var(--sheet);padding:22px;display:grid;gap:10px;align-content:start;min-width:0}
.card h3{font-size:1.15rem}
.card p{color:var(--ink-2);font-size:.95rem}
a.card{text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s}
a.card:hover{border-color:var(--ink);transform:translateY(-2px)}
.card .tag-n{font-family:var(--f-mono);font-size:.72rem;color:var(--azul);letter-spacing:.08em}
.card .card-img{margin:-22px -22px 6px;border-bottom:1px solid var(--rule);background:#fff;aspect-ratio:16/9;overflow:hidden}
.card .card-img img{width:100%;height:100%;object-fit:cover}
.card .card-img.contain img{object-fit:contain;padding:8px}
.faixa .card{background:var(--band-card);border-color:var(--band-rule)}
.faixa .card p{color:var(--band-fg-2)}
.faixa a.card{color:var(--band-fg)}
.faixa a.card:hover{border-color:var(--band-fg-2)}

.icone{width:40px;height:40px;color:var(--azul)}
.icone svg{width:100%;height:100%}

/* ---------- Carimbo ---------- */
.carimbo{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));border:2px solid var(--ink);background:var(--sheet)}
.carimbo > div{padding:7px 10px 8px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);min-width:0}
.carimbo .s2{grid-column:span 2}.carimbo .s4{grid-column:span 4}.carimbo .s6{grid-column:span 6}
.carimbo .fim{border-right:0}.carimbo .ult{border-bottom:0}
.carimbo small{display:block;font-family:var(--f-mono);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2)}
.carimbo span{display:block;font-weight:600;font-size:.9rem;line-height:1.3;margin-top:2px}
.carimbo .c-marca{display:flex;align-items:center;gap:12px;padding:10px 12px}
.carimbo .c-marca svg{height:30px}
.carimbo .c-marca b{font-family:var(--f-display);font-stretch:118%;font-weight:850;font-size:1.1rem}
.carimbo .c-marca em{font-style:normal;font-family:var(--f-mono);font-size:.62rem;letter-spacing:.18em;color:var(--ink-2);text-transform:uppercase}
.carimbo .diedro{display:flex;align-items:center;gap:8px}
.carimbo .diedro svg{height:14px}

/* ---------- Hero da página inicial ---------- */
.hero{padding-block:clamp(16px,3vw,40px) clamp(48px,7vw,88px)}
.folha{position:relative;padding:24px;border:1px solid var(--rule);background:var(--sheet)}
.zonas{position:absolute;display:flex;font-family:var(--f-mono);font-size:10px;color:var(--ink-2);pointer-events:none}
.zonas span{flex:1;display:flex;align-items:center;justify-content:center}
.z-top,.z-bot{left:24px;right:24px;height:24px}.z-top{top:0}.z-bot{bottom:0}
.z-top span+span,.z-bot span+span{border-left:1px solid var(--rule)}
.z-esq,.z-dir{top:24px;bottom:24px;width:24px;flex-direction:column}.z-esq{left:0}.z-dir{right:0}
.z-esq span+span,.z-dir span+span{border-top:1px solid var(--rule)}
.quadro{position:relative;border:2px solid var(--ink);padding:clamp(22px,4vw,48px);background-color:var(--sheet);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:20px 20px;background-position:-1px -1px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,4vw,56px);align-items:center}
.hero h1{font-size:clamp(2.2rem,4.2vw,3.7rem);margin-top:18px}
.hero h1 em{font-style:normal;color:var(--azul)}
.hero .lead{margin-top:20px}
.acoes{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.fatos{display:flex;flex-wrap:wrap;gap:10px 28px;margin-top:30px;padding-top:18px;border-top:1px solid var(--rule)}
.fatos li{font-family:var(--f-mono);font-size:.78rem;color:var(--ink-2);display:flex;flex-direction:column}
.fatos b{font-family:var(--f-display);font-stretch:112%;font-size:1.35rem;color:var(--ink);font-weight:760}
.visor{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px}
.visor-3d{position:relative;aspect-ratio:4/4.3;max-height:560px;width:100%;background:radial-gradient(ellipse at 50% 40%,var(--sheet) 0%,transparent 70%)}
.visor-3d > img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
.visor-3d canvas{position:absolute;inset:0}
.visor-3d.ativo > img{opacity:0;transition:opacity .4s}
.visor-modos{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.visor-modos button{font:500 .8rem var(--f-mono);letter-spacing:.06em;padding:7px 12px;border:1px solid var(--rule);background:var(--sheet);color:var(--ink);border-radius:2px;cursor:pointer}
.visor-modos button[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.visor-dica{font-size:.78rem;color:var(--ink-2);margin-top:8px}
.legenda-fea{display:grid;grid-template-columns:12px auto;grid-template-rows:auto 1fr;column-gap:8px;row-gap:8px;font-family:var(--f-mono);font-size:.68rem;color:var(--ink-2);align-self:center;height:min(320px,70%)}
.legenda-fea .lf-tit{grid-column:1 / -1;color:var(--ink);font-weight:500;white-space:nowrap}
.legenda-fea .lf-barra{background:linear-gradient(0deg,var(--fea-0),var(--fea-1) 22%,var(--fea-2) 45%,var(--fea-3) 66%,var(--fea-4) 83%,var(--fea-5));border:1px solid var(--ink)}
.legenda-fea .lf-ticks{display:flex;flex-direction:column;justify-content:space-between;line-height:1;font-variant-numeric:tabular-nums}
.hero .carimbo{margin-top:24px}
@media (max-width:900px){.hero-grid{grid-template-columns:minmax(0,1fr)}.visor-3d{max-height:440px}}
@media (max-width:640px){.folha{padding:0;border:0;background:transparent}.zonas{display:none}.quadro{padding:22px 16px}.legenda-fea{font-size:.6rem}}

/* ---------- Lista de entregáveis (lista de materiais) ---------- */
.bom{border:2px solid var(--ink);background:var(--sheet)}
.bom-row{display:grid;grid-template-columns:72px minmax(0,.9fr) minmax(0,1.6fr) auto;border-top:1px solid var(--rule);text-decoration:none;color:var(--ink)}
.bom-row > *{padding:16px 18px;min-width:0}
.bom-row > * + *{border-left:1px solid var(--rule)}
a.bom-row:hover{background:var(--azul-suave);color:var(--ink)}
.bom-head{border-top:0;border-bottom:2px solid var(--ink)}
.bom-head + .bom-row{border-top:0}
.bom-head > *{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);padding-block:10px}
.bom-item{font-family:var(--f-mono);font-weight:500;font-size:.95rem;color:var(--azul);font-variant-numeric:tabular-nums}
.bom-nome{font-family:var(--f-display);font-stretch:108%;font-weight:700;font-size:1.06rem;line-height:1.3}
.bom-desc{color:var(--ink-2)}
.bom-ir{font-family:var(--f-mono);font-size:.8rem;color:var(--azul);white-space:nowrap;align-self:center}
@media (max-width:760px){
  .bom-row{grid-template-columns:48px minmax(0,1fr)}
  .bom-row > *{padding:12px 12px}
  .bom-desc{grid-column:2;border-left:1px solid var(--rule);padding-top:0!important}
  .bom-ir{grid-column:2;border-left:1px solid var(--rule);padding-top:0!important}
  .bom-head > :nth-child(n+3){display:none}
}

/* ---------- Etapas (sequência real) ---------- */
.etapas{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:2px solid var(--ink)}
.etapas li{padding:22px 22px 24px;display:grid;gap:8px;align-content:start;border-bottom:1px solid var(--rule);border-right:1px solid var(--rule)}
.etapas li:nth-child(3n){border-right:0}
.etapas .n{font-family:var(--f-mono);font-size:.8rem;color:var(--azul);font-variant-numeric:tabular-nums}
.etapas h3{font-size:1.1rem}
.etapas p{color:var(--ink-2);font-size:.94rem}
@media (max-width:900px){.etapas{grid-template-columns:repeat(2,minmax(0,1fr))}.etapas li{border-right:1px solid var(--rule)!important}.etapas li:nth-child(2n){border-right:0!important}}
@media (max-width:560px){.etapas{grid-template-columns:minmax(0,1fr)}.etapas li{border-right:0!important;padding-inline:0}}
@media (min-width:901px){.etapas.q4{grid-template-columns:repeat(4,minmax(0,1fr))}.etapas.q4 li:nth-child(3n){border-right:1px solid var(--rule)}.etapas.q4 li:nth-child(4n){border-right:0}}

/* ---------- Tabelas ---------- */
.tabela-wrap{overflow-x:auto;border:1px solid var(--rule);background:var(--sheet);-webkit-overflow-scrolling:touch}
.tabela{width:100%;font-size:.92rem;min-width:560px}
.tabela caption{caption-side:top;text-align:left;padding:13px 16px;border-bottom:1px solid var(--rule);font-family:var(--f-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2)}
.tabela th,.tabela td{padding:11px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--rule)}
.tabela thead th{font-family:var(--f-mono);font-weight:500;font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);white-space:nowrap;background:var(--grid)}
.tabela tbody tr:last-child td,.tabela tbody tr:last-child th{border-bottom:0}
.tabela tbody th{font-weight:600}
.tabela td.n,.tabela th.n{text-align:right;font-variant-numeric:tabular-nums;font-family:var(--f-mono);white-space:nowrap}
.tabela tr.destaque td,.tabela tr.destaque th{background:var(--azul-suave)}
.tabela-nota{font-size:.8rem;color:var(--ink-2);padding:10px 16px;border-top:1px solid var(--rule)}

.chip{display:inline-flex;align-items:center;gap:7px;font-family:var(--f-mono);font-size:.74rem;font-weight:500;padding:3px 9px 3px 7px;border:1px solid currentColor;border-radius:2px;white-space:nowrap}
.chip::before{content:"";width:8px;height:8px;background:currentColor;border-radius:50%}
.chip.critico{color:var(--critico)}.chip.atencao{color:var(--atencao)}.chip.monitorar{color:var(--monitorar)}.chip.azul{color:var(--azul)}
.tag{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);border:1px solid var(--rule);padding:3px 7px;border-radius:2px;white-space:nowrap}

/* ---------- Curiosidades ---------- */
.sabia{border:1px solid var(--rule);border-left:4px solid var(--azul);background:var(--sheet);padding:20px 22px;display:grid;gap:8px;align-content:start}
.sabia .rot{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--azul)}
.sabia b.grande{font-family:var(--f-display);font-stretch:112%;font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;line-height:1.05;font-variant-numeric:tabular-nums}
.sabia p{color:var(--ink-2);font-size:.94rem}
.faixa .sabia{background:var(--band-card);border-color:var(--band-rule);border-left-color:#7E9DFF}
.faixa .sabia p{color:var(--band-fg-2)}
.faixa .sabia .rot{color:#9DB5FF}

/* ---------- Memorial / cálculo ---------- */
.calc{border:2px solid var(--ink);background:var(--sheet)}
.calc-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;padding:14px 18px;border-bottom:2px solid var(--ink)}
.calc-head h3{font-size:1.1rem}
.calc-sec{padding:18px;border-bottom:1px solid var(--rule)}
.calc-sec:last-child{border-bottom:0}
.calc-sec h4{font-family:var(--f-mono);font-weight:500;font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--azul);margin-bottom:12px}
.eq{font-family:var(--f-mono);font-size:.9rem;background:var(--paper);border:1px solid var(--rule);padding:10px 12px;overflow-x:auto;white-space:nowrap;margin:8px 0}
.res{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px 18px}
.res div{display:grid;gap:2px}
.res dt,.res .r-rot{font-size:.78rem;color:var(--ink-2)}
.res dd,.res .r-val{margin:0;font-family:var(--f-mono);font-size:1.08rem;font-weight:500;font-variant-numeric:tabular-nums}
.ok{color:var(--monitorar)}.alerta{color:var(--atencao)}.falha{color:var(--critico)}
.barra{position:relative;height:12px;background:var(--grid);border:1px solid var(--rule)}
.barra .uso{position:absolute;inset:0 auto 0 0;background:var(--fea)}
.barra .lim{position:absolute;top:-5px;bottom:-5px;right:0;border-right:2px solid var(--critico)}

/* ---------- Formulários e ferramentas ---------- */
.ferr{border:2px solid var(--ink);background:var(--sheet)}
.ferr-in{padding:clamp(18px,3vw,28px);display:grid;gap:18px}
.campos{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px}
.campo{display:grid;gap:6px;min-width:0;align-content:start}
.campo.full{grid-column:1 / -1}
.campo label,.campo legend,.campo .rot{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2)}
.campo input,.campo select,.campo textarea{width:100%;font:inherit;font-size:1rem;color:var(--ink);background:var(--paper);border:1px solid var(--rule);border-radius:3px;padding:10px 12px;min-height:44px}
.campo input:focus,.campo select:focus,.campo textarea:focus{outline:2px solid var(--azul);outline-offset:0;border-color:var(--azul)}
.campo textarea{min-height:120px;resize:vertical}
.campo .uni{position:relative}
.campo .uni input{padding-right:52px}
.campo .uni span{position:absolute;right:10px;top:50%;transform:translateY(-50%);font-family:var(--f-mono);font-size:.78rem;color:var(--ink-2);pointer-events:none}
fieldset.campo{border:0;padding:0;margin:0}
.checks{display:flex;flex-wrap:wrap;gap:8px}
.checks label{font-family:var(--f-body);font-size:.9rem;letter-spacing:0;text-transform:none;color:var(--ink);display:inline-flex;align-items:center;gap:8px;border:1px solid var(--rule);background:var(--paper);padding:8px 12px;border-radius:3px;cursor:pointer}
.checks input{width:auto;min-height:0;accent-color:var(--azul)}
.abas{display:flex;flex-wrap:wrap;gap:6px;border-bottom:2px solid var(--ink);padding:12px clamp(18px,3vw,28px) 0}
.abas button{font:500 .85rem var(--f-body);padding:9px 14px;border:1px solid var(--rule);border-bottom:0;background:var(--paper);color:var(--ink);border-radius:3px 3px 0 0;cursor:pointer;margin-bottom:-2px}
.abas button[aria-selected="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.saida-ferr{border-top:1px solid var(--rule);background:var(--paper);padding:clamp(18px,3vw,28px);display:grid;gap:14px}
.dica-fav{display:flex;gap:10px;align-items:flex-start;font-size:.86rem;color:var(--ink-2);border:1px dashed var(--rule);padding:12px 14px;background:var(--sheet)}
.dica-fav b{color:var(--ink)}
.aviso{font-size:.84rem;color:var(--ink-2);border-left:3px solid var(--atencao);padding:8px 12px;background:var(--sheet)}

/* ---------- Mosaico de imagens ---------- */
.mosaico{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);grid-template-rows:repeat(2,minmax(0,1fr));gap:8px;aspect-ratio:3/2}
.mosaico > *{position:relative;overflow:hidden;background:var(--grid);border:1px solid var(--rule);min-height:0;display:block}
.mosaico > :first-child{grid-row:1 / span 2}
.mosaico img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;padding:6%}
@media (max-width:520px){.mosaico{grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:auto;aspect-ratio:auto}.mosaico > :first-child{grid-column:1 / -1;grid-row:auto;aspect-ratio:4/3}.mosaico > :not(:first-child){aspect-ratio:1}}

/* ---------- Blog ---------- */
.posts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
@media (max-width:980px){.posts{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.posts{grid-template-columns:minmax(0,1fr)}}
.post-card{border:1px solid var(--rule);background:var(--sheet);display:flex;flex-direction:column;text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s;min-width:0}
.post-card:hover{border-color:var(--ink);transform:translateY(-2px);color:var(--ink)}
.post-card .pc-img{aspect-ratio:16/9;background:#fff;border-bottom:1px solid var(--rule);overflow:hidden}
.post-card .pc-img img{width:100%;height:100%;object-fit:cover}
.post-card .pc-img.contain img{object-fit:contain;padding:10px}
.post-card .pc-txt{padding:18px 20px 22px;display:grid;gap:8px;flex:1;align-content:start}
.post-card h3{font-size:1.15rem;line-height:1.25}
.post-card p{color:var(--ink-2);font-size:.93rem}
.post-meta{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.06em;color:var(--ink-2);display:flex;gap:10px;flex-wrap:wrap;text-transform:uppercase}
.post-meta .cat{color:var(--azul)}
.filtros{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.filtros button{font:500 .82rem var(--f-body);padding:8px 14px;border:1px solid var(--rule);background:var(--sheet);color:var(--ink);border-radius:20px;cursor:pointer}
.filtros button[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.vazio{border:1px dashed var(--rule);padding:32px;text-align:center;color:var(--ink-2);background:var(--sheet)}

/* texto corrido de artigo */
.prosa{max-width:70ch;font-size:1.06rem;line-height:1.75}
.prosa > * + *{margin-top:1.1em}
.prosa h2{font-size:1.6rem;margin-top:1.8em}
.prosa h3{font-size:1.25rem;margin-top:1.5em}
.prosa p,.prosa li{color:var(--ink)}
.prosa ul{list-style:none;display:grid;gap:8px}
.prosa ul li{display:grid;grid-template-columns:18px minmax(0,1fr);gap:8px}
.prosa ul li::before{content:"";width:7px;height:7px;margin-top:11px;background:var(--azul)}
.prosa ol{list-style:decimal;padding-left:1.3em;display:grid;gap:6px}
.prosa blockquote{margin:1.4em 0;border-left:4px solid var(--azul);padding:4px 0 4px 18px;color:var(--ink-2);font-style:italic}
.prosa img{border:1px solid var(--rule);background:#fff}
.prosa figure figcaption{font-size:.85rem;color:var(--ink-2);margin-top:8px}
.prosa code{font-family:var(--f-mono);font-size:.9em;background:var(--grid);padding:1px 5px;border-radius:2px}
.prosa table{width:100%;font-size:.93rem;border:1px solid var(--rule)}
.prosa th,.prosa td{border-bottom:1px solid var(--rule);padding:8px 12px;text-align:left}

/* ---------- Contato ---------- */
.canais{display:grid;border-top:2px solid var(--ink)}
.canais li{display:grid;grid-template-columns:110px minmax(0,1fr) auto;gap:12px;align-items:center;padding:14px 0;border-bottom:1px solid var(--rule)}
.canais small{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2)}
.canais span,.canais a{font-weight:600;overflow-wrap:anywhere}
.mini-btn{font:500 .78rem var(--f-body);padding:6px 10px;border:1px solid var(--rule);background:transparent;color:var(--ink);border-radius:3px;cursor:pointer;text-decoration:none;white-space:nowrap}
.mini-btn:hover{border-color:var(--ink);color:var(--ink)}
form.orc{border:2px solid var(--ink);background:var(--sheet);padding:clamp(20px,3vw,32px);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.form-acoes{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.form-acoes p{font-size:.82rem;color:var(--ink-2)}
.saida{grid-column:1 / -1;border:1px solid var(--azul);background:var(--paper);padding:16px;display:grid;gap:12px}
.saida.sucesso{border-color:var(--monitorar)}
.saida pre{margin:0;white-space:pre-wrap;font-family:var(--f-mono);font-size:.82rem;line-height:1.55;max-height:260px;overflow:auto;padding:12px;background:var(--sheet);border:1px solid var(--rule)}
.saida .linha{display:flex;flex-wrap:wrap;gap:10px}
.armadilha{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}
@media (max-width:560px){form.orc{grid-template-columns:minmax(0,1fr)}.canais li{grid-template-columns:minmax(0,1fr) auto}.canais small{grid-column:1 / -1}}

/* ---------- Chamada final ---------- */
.cta{background:var(--band-bg);color:var(--band-fg);padding-block:clamp(48px,7vw,80px);position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0 0 auto;height:3px;background:var(--fea)}
.cta-in{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:center}
.cta h2{font-size:clamp(1.6rem,3vw,2.3rem);color:var(--band-fg)}
.cta p{color:var(--band-fg-2);margin-top:10px;max-width:60ch}
.cta .btn.sec-btn{color:var(--band-fg);border-color:var(--band-fg)}
.cta .btn.sec-btn:hover{background:var(--band-fg);color:var(--band-bg)}
@media (max-width:760px){.cta-in{grid-template-columns:minmax(0,1fr)}}

/* ---------- Rodapé ---------- */
.rodape{border-top:2px solid var(--ink);padding-block:44px 40px;background:var(--sheet)}
.rodape-in{display:grid;grid-template-columns:minmax(0,1.3fr) repeat(3,minmax(0,1fr));gap:32px;align-items:start}
.rodape p,.rodape li{font-size:.88rem;color:var(--ink-2)}
.rodape h4{margin:0 0 10px;font-family:var(--f-mono);font-weight:500;font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);font-stretch:100%}
.rodape ul{display:grid;gap:7px}
.rodape a{color:var(--ink);text-decoration:none}
.rodape a:hover{color:var(--azul)}
.rodape .logo{margin-bottom:14px}
.rodape-base{margin-top:32px;padding-top:16px;border-top:1px solid var(--rule);display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;font-family:var(--f-mono);font-size:.72rem;color:var(--ink-2)}
@media (max-width:900px){.rodape-in{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.rodape-in{grid-template-columns:minmax(0,1fr)}}

/* ---------- WhatsApp flutuante ---------- */
.zap{position:fixed;right:calc(18px + env(safe-area-inset-right,0px));bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:40;display:flex;align-items:center;gap:8px;background:#128C4B;color:#fff;text-decoration:none;font:600 .9rem var(--f-body);padding:12px 16px 12px 14px;border-radius:30px;box-shadow:0 10px 24px -10px rgba(0,0,0,.5)}
.zap:hover{background:#0E7A40;color:#fff}
.zap svg{width:22px;height:22px}
@media (max-width:560px){.zap span{display:none}.zap{padding:13px}}

/* ---------- Ampliar imagem ---------- */
dialog.lb{border:0;padding:0;background:transparent;max-width:min(1200px,94vw);max-height:92vh;color:#fff}
dialog.lb::backdrop{background:rgba(5,10,14,.88)}
dialog.lb figure{display:grid;gap:10px}
dialog.lb img{max-height:80vh;width:auto;margin-inline:auto;background:#fff}
dialog.lb figcaption{font-size:.9rem;text-align:center;color:#e6ecf0;max-width:80ch;margin-inline:auto}
.lb-fechar{position:absolute;top:0;right:0;background:rgba(14,27,39,.85);color:#fff;border:1px solid rgba(255,255,255,.4);border-radius:3px;font:600 .85rem var(--f-body);padding:7px 12px;cursor:pointer;z-index:2}
.ferr,.calc,.tabela-wrap,.dica-fav,.aviso,.sabia,.card,.fig{min-width:0}
.tabela-wrap{position:relative}

/* ---------- Portfólio de projetos ---------- */
.post-card .pc-img{position:relative}
.pc-selo{position:absolute;left:10px;top:10px;font-family:var(--f-mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;background:var(--sheet);color:var(--ink-2);border:1px solid var(--rule);padding:2px 7px}
.proj-card .chip{justify-self:start;margin-top:4px;white-space:normal}
.chip.neutro{color:var(--ink-2)}
.pj-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:18px}
.pj-principal{display:block;border:1px solid var(--rule);background:var(--paper);aspect-ratio:16/10;overflow:hidden;cursor:zoom-in}
.pj-principal img{width:100%;height:100%;object-fit:contain}
.pj-legenda{font-size:.84rem;color:var(--ink-2);margin-top:8px}
.pj-miniaturas{display:grid;grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:8px;margin-top:10px}
.pj-miniaturas:empty{display:none}
.pj-miniaturas button{padding:0;border:1px solid var(--rule);background:var(--paper);aspect-ratio:4/3;cursor:pointer;overflow:hidden}
.pj-miniaturas button[aria-pressed="true"]{border-color:var(--azul);box-shadow:inset 0 0 0 2px var(--azul)}
.pj-miniaturas img{width:100%;height:100%;object-fit:cover}
.pj-lado{display:grid;gap:18px;align-content:start;min-width:0}
.tabela.ficha{min-width:0}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.tags:empty{display:none}
.tag{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.04em;border:1px solid var(--rule);background:var(--sheet);padding:3px 8px;border-radius:2px;color:var(--ink-2)}

/* ---------- Três frentes (início) ---------- */
.frentes .card .card-img{aspect-ratio:4/3}
.frentes .card .card-img img{object-fit:contain;padding:10px}
.frentes .card ul{display:grid;gap:4px;font-size:.9rem;color:var(--ink-2)}
.frentes .card ul li::before{content:"— ";color:var(--azul)}
.visor-modos[hidden]{display:none}

/* ---------- Calculadora de engrenagens ---------- */
.eng-desenho{border:1px solid var(--rule);background:var(--paper);aspect-ratio:16/10;position:relative}
.eng-desenho svg{position:absolute;inset:0;width:100%;height:100%}
.eng-desenho .e1{fill:var(--azul-suave);stroke:var(--azul);stroke-width:1.2}
.eng-desenho .e2{fill:rgba(227,107,44,.12);stroke:#D9622A;stroke-width:1.2}
.eng-desenho .prim{fill:none;stroke:var(--ink-2);stroke-width:.8;stroke-dasharray:8 3 2 3}
.eng-desenho .eixo{stroke:var(--ink-2);stroke-width:.7;stroke-dasharray:10 3 2 3}
.eng-desenho .cota{stroke:var(--ink);stroke-width:.8;fill:none}
.eng-desenho text{font-family:var(--f-mono);font-size:11px;fill:var(--ink-2)}
.eng-desenho .furo{fill:var(--paper);stroke:currentColor;stroke-width:1}
.eng-ctrl{position:absolute;right:10px;bottom:10px;display:flex;gap:6px}

/* menu com mais itens: ajuste entre 1101 e 1280 px */
.menu a.item,.menu button.item,.menu .btn{white-space:nowrap}
@media (min-width:1101px) and (max-width:1440px){.topo-in{gap:14px}.menu a.item,.menu button.item{padding:9px 8px;font-size:.89rem}.menu .btn{margin-left:6px;padding:10px 13px;font-size:.9rem}}
@media (min-width:1101px) and (max-width:1440px){.topo .logo-txt small{display:none}}
@media (min-width:1101px) and (max-width:1250px){.menu a.item,.menu button.item{padding:9px 6px;font-size:.86rem}.menu button.item{gap:4px}}

/* ---------- Logomarca JDB Teck ---------- */
.logo-txt b span{margin-left:.16em;font-weight:620;letter-spacing:.01em;color:var(--azul);background:linear-gradient(90deg,var(--azul) 10%,var(--quente,#E8622A) 95%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
:root{--quente:#E2591F}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--quente:#FF8A4C}}
:root[data-theme="dark"]{--quente:#FF8A4C}
.marca .m-engr{transform-box:fill-box;transform-origin:center;transition:transform .9s cubic-bezier(.2,.7,.2,1)}
.logo:hover .marca .m-engr,.logo:focus-visible .marca .m-engr{transform:rotate(72deg)}
.marca .m-led{transform-box:fill-box;transform-origin:center;animation:led 3.2s ease-in-out infinite}
@keyframes led{0%,100%{opacity:.18;transform:scale(.85)}50%{opacity:.42;transform:scale(1.15)}}
.topo .marca .m-engr{animation:engr-entrada 1.4s cubic-bezier(.2,.7,.2,1) both}
@keyframes engr-entrada{from{transform:rotate(-108deg)}to{transform:rotate(0)}}
.topo .logo:hover .marca .m-engr{animation:none}
.carimbo .c-marca .c-teck{display:inline;color:var(--azul);background:linear-gradient(90deg,var(--azul) 10%,var(--quente) 95%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
@media (max-width:480px){.topo-in{gap:12px}.logo{gap:9px}.logo svg{height:28px}.logo-txt b{font-size:1.2rem}.logo-txt small{font-size:.5rem;letter-spacing:.08em}.menu-btn{padding:8px 10px}}
@media (max-width:350px){.logo-txt small{display:none}}

/* controles do 3D só aparecem quando o visualizador carrega (o espaço fica reservado para não pular a página) */
.visor-modos,.visor-dica{visibility:hidden}
html.tem-3d .visor-modos,html.tem-3d .visor-dica{visibility:visible}