.site-header{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line);background:rgb(245 245 247 / 94%);backdrop-filter:blur(18px)}
.header__inner{min-height:76px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:2rem}
.brand{display:flex;align-items:center;justify-self:start}.brand-logo{display:block;width:clamp(11.5rem,15vw,13.5rem);height:auto}
.main-nav{display:flex;align-items:center;gap:.25rem}.main-nav>a,.main-nav summary{padding:.75rem;font-size:.9rem;font-weight:580;cursor:pointer}.main-nav details{position:relative}.main-nav summary{display:flex;align-items:center;gap:.4rem;list-style:none}.main-nav summary::-webkit-details-marker{display:none}.main-nav summary>span{font-size:1rem;transition:transform .25s ease}.main-nav details[open] summary>span{transform:rotate(45deg)}
.nav-panel{position:absolute;top:calc(100% + .75rem);left:50%;width:min(820px,calc(100vw - 3rem));padding:.75rem;display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:.5rem;transform:translateX(-50%);background:#fff;border:1px solid var(--line);box-shadow:0 24px 65px rgb(30 30 32 / 13%)}
.nav-panel a{min-width:0;min-height:5.6rem;padding:.8rem;display:grid;grid-column:span 2;grid-template-rows:1.5rem auto;gap:.6rem;align-content:center;border:1px solid transparent;transition:background .2s ease,border-color .2s ease,transform .2s ease}.nav-panel a:not(.nav-feature){order:3}.nav-panel a:hover{border-color:var(--line);background:var(--soft);transform:translateY(-2px)}.nav-panel .ui-icon{width:1.2rem;height:1.2rem;color:var(--muted)}.nav-panel a>span{min-width:0;display:grid;gap:.12rem}.nav-panel strong{font-size:.78rem;line-height:1.15}.nav-panel small{overflow:hidden;color:var(--muted);font-size:.63rem;text-overflow:ellipsis;white-space:nowrap}
.nav-panel .nav-feature{min-height:6.2rem;padding:1rem;grid-column:span 5;grid-template-columns:2.7rem minmax(0,1fr) auto;grid-template-rows:auto;gap:.8rem;align-content:stretch;align-items:center;border:1px solid var(--line);background:var(--surface)}.nav-panel .nav-feature--heatpump{order:1;box-shadow:inset 3px 0 #3975d2}.nav-panel .nav-feature--gas{order:2;box-shadow:inset 3px 0 #c89300}.nav-panel .nav-feature .ui-icon{width:1.3rem;height:1.3rem;padding:.5rem;box-sizing:content-box;border:1px solid currentColor;border-radius:0;background:white}.nav-panel .nav-feature strong{font-size:.95rem}.nav-panel .nav-feature small{font-size:.7rem}.nav-panel .nav-feature>b{color:var(--muted);font-size:.66rem;font-weight:650;white-space:nowrap}.nav-panel .nav-feature--heatpump .ui-icon{color:#3975d2}.nav-panel .nav-feature--gas .ui-icon{color:#a87900}.nav-panel .nav-feature:hover{border-color:var(--ink);background:#fff}
.nav-toggle{display:none}.header__call{justify-self:end;white-space:nowrap}.drawer-head,.drawer-contact,.nav-backdrop{display:none}
@media(max-width:900px){
  body.nav-open{overflow:hidden}.site-header{background:var(--paper);backdrop-filter:none}.header__inner{display:flex}.brand{margin-right:auto}.header__call{display:none}
  .nav-toggle{width:3rem;height:3rem;padding:0;position:relative;z-index:2;display:grid;place-items:center;border:0;background:#ededf0;color:var(--ink);transition:background .2s ease,transform .2s ease}.nav-toggle:hover{background:#e4e4e8}.nav-toggle:active{transform:scale(.96)}.nav-toggle:focus-visible{outline:2px solid var(--ink);outline-offset:3px}.nav-toggle[aria-expanded=true]{background:var(--ink);color:white}.nav-toggle__label{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.nav-toggle__icon{width:1.3rem;height:1.3rem;display:block;transition:transform .2s ease}.nav-toggle:hover .nav-toggle__icon{transform:scaleX(.92)}
  .main-nav{position:fixed;z-index:32;top:0;right:0;bottom:0;width:min(88vw,430px);height:100dvh;padding:0 1.25rem 1.5rem;display:flex;align-items:stretch;overflow-x:hidden;overflow-y:auto;background:radial-gradient(circle at 100% 8%,rgb(57 117 210 / 10%),transparent 30%),radial-gradient(circle at 0 72%,rgb(200 147 0 / 8%),transparent 32%),var(--paper);box-shadow:-30px 0 80px rgb(30 30 32 / 20%);flex-direction:column;transform:translateX(105%);visibility:hidden;transition:transform .45s cubic-bezier(.2,.75,.2,1),visibility .45s}
  .main-nav::before{content:'';position:absolute;top:0;left:0;width:3px;height:100%;background:linear-gradient(#d9413d 0 32%,#3975d2 32% 66%,#d2a20d 66%);opacity:.75}.main-nav.is-open{transform:none;visibility:visible}.main-nav>a,.main-nav summary{position:relative;padding:1rem .15rem;border-bottom:1px solid var(--line);font-size:clamp(1.05rem,4vw,1.3rem);transition:padding .2s ease,color .2s ease,background .2s ease}.main-nav>a::after{content:'↗';position:absolute;right:.2rem;color:#a3a3a9;font-size:.82rem;transition:transform .2s ease,color .2s ease}.main-nav>a:hover{padding-left:.45rem;background:linear-gradient(90deg,rgb(255 255 255 / 70%),transparent)}.main-nav>a:hover::after{color:var(--ink);transform:translate(.12rem,-.12rem)}
  .drawer-head{position:sticky;z-index:2;top:0;margin-inline:-1.25rem;margin-bottom:.4rem;padding:1rem 1.25rem;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgb(245 245 247 / 88%);backdrop-filter:blur(18px)}.drawer-head>span{display:grid;gap:.35rem}.drawer-head small{color:var(--muted);font:600 .58rem var(--mono);letter-spacing:.12em;text-transform:uppercase}.drawer-logo{display:block;width:clamp(9rem,38vw,11rem);height:auto;filter:grayscale(1) brightness(0);opacity:.42}.drawer-head button{width:3rem;height:3rem;padding:0;display:grid;place-items:center;border:0;background:#ededf0;color:var(--ink);transition:background .2s ease,transform .2s ease}.drawer-head button:hover{background:#e4e4e8}.drawer-head button:active{transform:scale(.96)}.drawer-head button:focus-visible{outline:2px solid var(--ink);outline-offset:3px}.drawer-head button svg{width:1.3rem;height:1.3rem;display:block}
  .main-nav details{position:static}.main-nav summary{justify-content:space-between}.nav-panel{position:static;width:auto;margin:.5rem 0 1rem;padding:0;grid-template-columns:1fr;gap:.35rem;transform:none;border:0;background:transparent;box-shadow:none}.nav-panel a,.nav-panel a:not(.nav-feature){min-height:4rem;padding:.65rem .75rem;order:initial;grid-column:1;grid-template-columns:2.4rem minmax(0,1fr);grid-template-rows:auto;gap:.65rem;align-content:stretch;align-items:center;border:1px solid var(--line);background:var(--surface);transition:transform .25s ease,border-color .25s ease}.nav-panel a:hover{transform:translateX(.25rem);border-color:var(--ink)}.nav-panel .ui-icon{width:1.35rem;height:1.35rem;color:var(--ink)}.nav-panel strong{font-size:.88rem}.nav-panel small{font-size:.7rem}.nav-panel .nav-feature{min-height:5rem;padding:.75rem;order:initial;grid-column:1;grid-template-columns:2.4rem minmax(0,1fr) auto}.nav-panel .nav-feature .ui-icon{width:1.2rem;height:1.2rem;padding:.45rem}.nav-panel .nav-feature strong{font-size:.9rem}.nav-panel .nav-feature small{font-size:.68rem}.nav-panel .nav-feature>b{font-size:0}.nav-panel .nav-feature>b::after{content:'→';font-size:1rem}
  .nav-desktop-link{display:none}.drawer-contact{position:relative;margin-top:auto;padding-top:2rem;display:grid;gap:.5rem}.drawer-contact::before{content:'';position:absolute;top:1rem;left:0;width:3.5rem;border-top:2px solid var(--ink)}.drawer-contact>small{color:var(--muted);font:600 .62rem var(--mono);letter-spacing:.08em;text-transform:uppercase}.drawer-contact a{position:relative;isolation:isolate;overflow:hidden;padding:1rem;display:flex;justify-content:space-between;background:var(--ink);color:white;font-weight:650}.drawer-contact a::before{content:'';position:absolute;z-index:-1;inset:0;background:linear-gradient(110deg,#242426 45%,#343438);transform:translateX(-100%);transition:transform .35s ease}.drawer-contact a:hover::before{transform:none}
  .nav-backdrop{position:fixed;z-index:31;inset:0;display:block;border:0;background:rgb(15 15 17 / 48%);opacity:0;visibility:hidden;backdrop-filter:blur(3px);transition:opacity .35s ease,visibility .35s}.nav-backdrop.is-open{opacity:1;visibility:visible}
}
@media(max-width:420px){.main-nav{width:94vw}.nav-panel a{min-height:3.65rem}.drawer-contact{padding-top:1.25rem}.brand-logo{width:10.75rem}.nav-toggle{width:2.85rem;height:2.85rem}.nav-toggle__icon{width:1.15rem}}
@media(prefers-reduced-motion:reduce){.main-nav,.nav-backdrop,.nav-panel a{transition:none}}