:root{
  --bg:#f4f6f4;
  --paper:#fbfcfb;
  --ink:#101817;
  --ink-2:#485250;
  --line:#d9dfdc;
  --line-dark:rgba(255,255,255,.15);
  --night:#0a1413;
  --night-2:#0e1d1b;
  --mint:#20c6bb;
  --mint-2:#11a99f;
  --white:#fff;
  --wa:#25D366;
  --pad:clamp(20px,5vw,76px);
  --max:1760px;
  --ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--night)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{color:inherit}
img{max-width:100%;display:block}
::selection{background:var(--mint);color:var(--night)}
.skip{position:fixed;top:8px;left:8px;z-index:9999;background:#fff;color:#000;padding:10px 14px;transform:translateY(-140%)}
.skip:focus{transform:none}
.shell{width:min(var(--max),100%);margin-inline:auto;padding-inline:var(--pad)}
.eyebrow{display:flex;align-items:center;gap:10px;font-size:11px;line-height:1.2;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-2)}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor}
.site-nav{position:fixed;inset:0 0 auto;z-index:1000;height:76px;display:flex;align-items:center;transition:background .35s,border-color .35s,transform .35s var(--ease);border-bottom:1px solid transparent}
.site-nav.scrolled{background:rgba(10,20,19,.92);backdrop-filter:blur(16px);border-color:rgba(255,255,255,.1)}
.nav-inner{width:min(var(--max),100%);margin:auto;padding-inline:var(--pad);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:11px;color:#fff;min-width:max-content}
.brand img{width:33px;height:33px;object-fit:contain}
.brand-copy strong{display:block;font-size:13px;letter-spacing:.015em}
.nav-links{display:flex;align-items:center;justify-content:center;gap:4px}
.nav-links a{position:relative;padding:9px 11px;color:rgba(255,255,255,.66);font-size:12px;font-weight:600;letter-spacing:.03em}
.nav-cta{justify-self:end;border:1px solid rgba(255,255,255,.24);color:#fff;border-radius:999px;padding:10px 15px;font-size:12px;font-weight:700;transition:.25s}
.nav-cta:hover{background:#fff;color:var(--night);border-color:#fff}
.menu-btn{display:none;justify-self:end;width:42px;height:42px;border:1px solid rgba(255,255,255,.22);border-radius:50%;background:none;align-items:center;justify-content:center;cursor:pointer}
.menu-btn span,.menu-btn::before,.menu-btn::after{content:"";display:block;position:absolute;width:17px;height:1px;background:#fff;transition:.25s}
.menu-btn::before{transform:translateY(-5px)}
.menu-btn::after{content:"";display:block;position:absolute;width:17px;height:1px;background:#fff;transition:.25s}
.mobile-menu{display:none;position:fixed;z-index:990;inset:0;background:var(--night);padding:112px var(--pad) 36px;opacity:0;pointer-events:none;transition:opacity .25s}
.mobile-menu.open{opacity:1;pointer-events:auto}
.mobile-menu nav{display:flex;flex-direction:column;border-top:1px solid var(--line-dark)}
.mobile-menu a{font-size:clamp(28px,8vw,42px);letter-spacing:-.035em;color:#fff;padding:18px 0;border-bottom:1px solid var(--line-dark)}
.footer{background:var(--night);color:#fff;padding:50px 0 24px}
.footer-main{display:grid;grid-template-columns:1.3fr .7fr .7fr;gap:42px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-desc{max-width:520px;color:rgba(255,255,255,.47);font-size:14px;line-height:1.65;margin-top:24px}
.footer-col h4{font:10px ui-monospace,SFMono-Regular,Menlo,monospace;text-transform:uppercase;letter-spacing:.1em;color:rgba(255,255,255,.35);margin:0 0 18px}
.footer-col a{display:block;color:rgba(255,255,255,.65);font-size:13px;padding:5px 0}
.footer-bottom{border-top:1px solid var(--line-dark);padding-top:25px;display:flex;align-items:center;justify-content:space-between;gap:20px;color:rgba(255,255,255,.35);font-size:10px;letter-spacing:.03em}
.wa{position:fixed;z-index:800;right:22px;bottom:22px;width:50px;height:50px;border-radius:50%;display:grid;place-items:center;background:var(--wa);color:#fff;box-shadow:0 10px 30px rgba(0,0,0,.20);transition:transform .25s var(--ease);isolation:isolate}
.wa:hover{transform:translateY(-3px) scale(1.04)}
.wa svg{width:22px;height:22px;fill:currentColor}

/* ===== Páginas internas — LS Ambiental ===== */
body{padding-top:76px}
.site-nav{background:rgba(10,20,19,.96);backdrop-filter:blur(16px);border-color:rgba(255,255,255,.1)}

.crumb{padding:20px 0 0;font-size:12px;color:var(--ink-2)}
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0}
.crumb li::after{content:"/";margin-left:6px;opacity:.45}
.crumb li:last-child::after{content:""}
.crumb a{text-decoration:underline;text-underline-offset:3px}

.topo{padding:34px 0 clamp(34px,4vw,52px);border-bottom:1px solid var(--line)}
.topo h1{font-size:clamp(34px,4.4vw,62px);line-height:1;letter-spacing:-.045em;font-weight:600;margin:14px 0 0;max-width:19ch}
.topo .lead{font-size:clamp(17px,1.3vw,21px);line-height:1.5;color:var(--ink-2);margin:18px 0 0;max-width:62ch}
.topo .orgaos{margin:22px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.topo .orgaos span{border:1px solid var(--line);border-radius:999px;padding:6px 13px;font-size:12px;font-weight:600;background:var(--paper)}

.corpo{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:clamp(28px,4vw,64px);align-items:start;padding:clamp(38px,4.4vw,64px) 0}
.artigo h2{font-size:clamp(25px,2.4vw,34px);line-height:1.1;letter-spacing:-.032em;font-weight:600;margin:44px 0 14px}
.artigo h2:first-child{margin-top:0}
.artigo h3{font-size:clamp(17px,1.4vw,20px);font-weight:650;margin:26px 0 8px;letter-spacing:-.012em}
.artigo p{font-size:16.5px;line-height:1.62;color:var(--ink-2);margin:0 0 14px;max-width:68ch}
.artigo strong{color:var(--ink);font-weight:650}
.artigo ul{margin:0 0 16px;padding:0;list-style:none;max-width:68ch}
.artigo ul li{position:relative;padding-left:20px;margin:0 0 9px;font-size:16.5px;line-height:1.55;color:var(--ink-2)}
.artigo ul li::before{content:"";position:absolute;left:2px;top:10px;width:7px;height:1px;background:var(--mint-2)}
.artigo a{color:var(--mint-2);text-decoration:underline;text-underline-offset:3px}

.escopo{border:1px solid var(--line);border-radius:14px;background:var(--paper);padding:22px 24px;margin:22px 0}
.escopo h3{margin:0 0 12px;font-size:14px;letter-spacing:.02em}
.escopo ul{columns:2;column-gap:26px}
@media(max-width:640px){.escopo ul{columns:1}}

.lateral{position:sticky;top:96px;display:grid;gap:16px}
.painel{border:1px solid var(--line);border-radius:14px;background:var(--paper);padding:22px}
.painel h3{margin:0 0 10px;font-size:14px;font-weight:700;letter-spacing:.01em}
.painel p{margin:0 0 14px;font-size:14px;line-height:1.5;color:var(--ink-2)}
.painel .cta{display:flex;align-items:center;justify-content:center;gap:8px;background:var(--wa);color:#fff;border-radius:999px;padding:12px 16px;font-size:13.5px;font-weight:700;box-shadow:0 2px 10px rgba(37,211,102,.24);transition:background .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease)}
.painel .cta svg{flex:none}
.painel .cta:hover{background:#1da851;box-shadow:0 4px 16px rgba(37,211,102,.34);transform:translateY(-1px)}
.painel .cta:focus-visible{outline:2px solid var(--night);outline-offset:3px}
.painel nav{display:flex;flex-direction:column}
.painel nav a{padding:9px 0;font-size:14px;border-top:1px solid var(--line);color:var(--ink-2);transition:.2s}
.painel nav a:first-of-type{border-top:0}
.painel nav a:hover{color:var(--mint-2);padding-left:5px}
.painel nav a[aria-current]{color:var(--ink);font-weight:650}

.faq{border-top:1px solid var(--line);padding:clamp(34px,4vw,56px) 0}
.faq h2{font-size:clamp(27px,2.8vw,40px);letter-spacing:-.038em;font-weight:600;margin:0 0 22px}
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{cursor:pointer;font-size:16.5px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:flex-start}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:20px;line-height:1;color:var(--mint-2);flex:none}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:12px 0 0;font-size:16px;line-height:1.6;color:var(--ink-2);max-width:72ch}

.fecho{background:var(--night);color:#fff;padding:clamp(40px,4.6vw,66px) 0}
.fecho h2{font-size:clamp(27px,3vw,42px);letter-spacing:-.04em;font-weight:600;margin:0 0 12px;max-width:20ch}
.fecho p{color:rgba(255,255,255,.62);margin:0 0 24px;max-width:58ch;line-height:1.55}
.fecho .acoes{display:flex;flex-wrap:wrap;gap:12px}
.fecho .acoes a{border-radius:999px;padding:13px 22px;font-size:14px;font-weight:700}
.fecho .acoes a.primaria{background:var(--mint);color:var(--night)}
.fecho .acoes a.secundaria{border:1px solid rgba(255,255,255,.26);color:#fff}

.irmas{border-top:1px solid var(--line);padding:clamp(34px,4vw,54px) 0}
.irmas h2{font-size:clamp(22px,2.2vw,30px);letter-spacing:-.03em;font-weight:600;margin:0 0 20px}
.irmas-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:14px}
.irmas-grid a{border:1px solid var(--line);border-radius:14px;padding:20px;background:var(--paper);transition:.24s}
.irmas-grid a:hover{border-color:var(--mint-2);transform:translateY(-2px)}
.irmas-grid strong{display:block;font-size:16px;margin-bottom:6px;letter-spacing:-.012em}
.irmas-grid span{font-size:13.5px;color:var(--ink-2);line-height:1.5}

@media(max-width:980px){
  .corpo{grid-template-columns:1fr}
  .lateral{position:static}
}
@media(max-width:900px){
  .nav-links{display:none}.menu-btn{display:flex}.nav-cta{display:none}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition-duration:.01ms!important;animation-duration:.01ms!important}
}

.credito{margin-top:22px;padding-top:20px;border-top:1px solid var(--line-dark);display:flex;justify-content:center}
.credito a{display:inline-flex;align-items:center;gap:13px;color:rgba(255,255,255,.40);font-size:12px;letter-spacing:.005em;transition:color .24s var(--ease)}
.credito a:hover{color:rgba(255,255,255,.72)}
.credito img{height:30px;width:auto;opacity:.55;transition:opacity .24s var(--ease)}
.credito a:hover img{opacity:1}
.credito strong{font-weight:650;color:rgba(255,255,255,.62);transition:color .24s var(--ease)}
.credito a:hover strong{color:#fff}
@media(max-width:520px){.credito a{flex-direction:column;gap:9px;text-align:center}}