/* Navegação lateral Russi Engenharia */
:root{--sidebar-width:270px}
.site-header{
  position:fixed;inset:0 auto 0 0;width:var(--sidebar-width);height:100vh;height:100dvh;
  z-index:30;overflow-y:auto;overscroll-behavior:contain;background:#fff;
  border-right:1px solid #c7d6e7;border-bottom:0;box-shadow:5px 0 24px rgba(9,35,69,.06)
}
.header-inner{
  width:auto;max-width:none;min-height:100%;margin:0;padding:26px 18px 22px;
  display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:23px
}
.site-header .brand{align-self:center;margin-left:0}
.site-header .brand-logo{width:116px;height:auto}
.site-header nav{
  display:flex;flex:1;flex-direction:column;align-items:stretch;gap:2px;width:100%;
  border-top:1px solid #d9e5f1;padding-top:15px
}
.site-header nav>a{
  position:relative;display:flex;align-items:center;min-height:46px;padding:9px 13px;
  border:0;border-radius:9px;color:#183555;
  font-family:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;
  font-size:16px;font-weight:800;letter-spacing:-.025em;line-height:1.35;
  white-space:normal;text-decoration:none;transition:background-color .2s,color .2s,transform .2s
}
.site-header nav>a:not(.nav-cta)::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:2px;
  background:#1768b4;transform:scaleY(0);transition:transform .2s
}
.site-header nav>a:not(.nav-cta):hover,
.site-header nav>a:not(.nav-cta):focus-visible{background:#edf5fe;color:#092345;transform:translateX(4px)}
.site-header nav>a.active{background:#edf5fe;color:#092345;font-weight:800}
.site-header nav>a.active::before,
.site-header nav>a:not(.nav-cta):hover::before,
.site-header nav>a:not(.nav-cta):focus-visible::before{transform:scaleY(1)}
.site-header nav .nav-cta{
  margin-top:24px;min-height:58px;padding:14px 15px;background:#092345;border:1px solid #092345;
  color:#fff;font-size:15px;font-weight:800;display:flex;justify-content:space-between;gap:10px
}
.site-header nav .nav-cta:hover,.site-header nav .nav-cta:focus-visible{background:#164b86;color:#fff;transform:translateX(3px)}
.site-header nav .nav-cta span{padding-left:0}
.site-header nav .nav-cta span{font-size:18px;line-height:1}
.site-header .menu-toggle,.drawer-head,.nav-backdrop{display:none}
main,footer{margin-left:var(--sidebar-width)}
.skip:focus{left:calc(var(--sidebar-width) + 16px);z-index:50}
.hero h1{font-size:clamp(2.7rem,3.9vw,4.3rem)}
.hero-grid{min-height:610px}.diagram{min-height:610px}
@media(min-width:1051px) and (max-width:1250px){
  .hero-grid{grid-template-columns:1fr;min-height:0}.hero-copy{padding:66px 0 42px}
  .diagram{min-height:350px;margin:0 -24px}.service-grid.three{grid-template-columns:repeat(2,1fr)}
  .three-grid{grid-template-columns:repeat(2,1fr)}
  .sector-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:1050px){
  :root{--sidebar-width:0px}
  main,footer{margin-left:0}
  .site-header{
    position:sticky;inset:auto;top:0;width:100%;height:auto;min-height:0;
    overflow:visible;border-right:0;border-bottom:1px solid #c7d6e7;
    box-shadow:0 6px 22px rgba(9,35,69,.07);backdrop-filter:none
  }
  .header-inner{
    width:min(calc(100% - 36px),1160px);min-height:82px;margin:auto;padding:5px 0;
    display:flex;flex-direction:row;align-items:center;justify-content:space-between;gap:14px
  }
  .site-header .brand{margin:0;align-self:center}
  .site-header .brand-logo{width:59px;height:auto}
  .site-header .menu-toggle{display:flex;align-items:center;gap:10px;border:1px solid #c7d6e7;border-radius:8px;padding:9px 13px;background:#fff;color:#092345;font-weight:700;cursor:pointer}
  .site-header nav{
    display:flex;position:fixed;inset:0 auto 0 0;top:0;left:0;right:auto;bottom:0;
    width:min(86vw,340px);height:100vh;height:100dvh;padding:20px 18px 24px;
    overflow-y:auto;overscroll-behavior:contain;z-index:33;background:#fff;
    box-shadow:12px 0 35px rgba(9,35,69,.18);flex-direction:column;align-items:stretch;gap:4px;
    border-top:0;
    visibility:hidden;transform:translateX(-105%);pointer-events:none;
    transition:transform .25s ease,visibility .25s ease
  }
  .site-header nav.open{display:flex;visibility:visible;transform:translateX(0);pointer-events:auto}
  .drawer-head{display:flex;align-items:flex-start;justify-content:space-between;margin:0 3px 17px}
  .drawer-head img{width:66px;height:78px;object-fit:contain}
  .menu-close{display:grid;place-items:center;width:38px;height:38px;border:1px solid #c7d6e7;border-radius:8px;background:#fff;color:#092345;font-size:18px;cursor:pointer}
  .site-header nav>a{font-size:16px;padding:12px 13px;min-height:49px}
  .site-header nav .nav-cta{margin-top:19px;font-size:15px}
  .site-header .nav-backdrop{display:block;position:fixed;inset:0;z-index:31;background:rgba(4,20,41,.48);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .25s,visibility .25s}
  .nav-open .site-header .nav-backdrop{opacity:1;visibility:visible;pointer-events:auto}
  body.nav-open{overflow:hidden}
  .skip:focus{left:16px}
  .hero h1{font-size:clamp(2.7rem,5.1vw,5rem)}
  .hero-grid{grid-template-columns:1fr;min-height:0}
  .hero-copy{padding:64px 0 42px}
  .diagram{min-height:350px;margin:0 -24px}
  .service-grid.three,.three-grid{grid-template-columns:repeat(2,1fr)}
  #solucoes{scroll-margin-top:100px}
}
@media(max-width:560px){
  .header-inner{min-height:78px}.site-header .brand-logo{width:55px;height:auto}
  .hero h1{font-size:clamp(2.45rem,11vw,3.7rem)}
  .hero-copy{padding:52px 0 36px}
  .diagram{min-height:315px;margin:0 -18px}
  .service-grid.three,.three-grid{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .site-header nav>a,.site-header nav>a::before,.site-header nav,.site-header .nav-backdrop{transition:none}
}