:root{color-scheme:dark;--bg:#101515;--surface:#192020;--line:#344040;--text:#f3f6f3;--muted:#b2beb8;--green:#bcf34f;--max:1280px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:17px/1.65 Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}a,button{touch-action:manipulation}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--green);outline-offset:5px}::selection{background:var(--green);color:var(--bg)}.wrap{width:min(var(--max),calc(100% - 96px));margin:auto}.skip{position:fixed;top:-100px;left:20px;z-index:100;background:var(--green);color:#101515;padding:12px}.skip:focus{top:12px}header{border-bottom:1px solid var(--line);position:relative;z-index:10;background:var(--bg)}.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:100px;gap:32px}.brand{display:flex;align-items:center;gap:18px}.brand strong{font-size:43px;font-weight:900;letter-spacing:-3px;line-height:1}.brand strong span{color:var(--green)}.brand small{font-size:12px;line-height:1.35;letter-spacing:.06em;text-transform:uppercase;border-left:1px solid var(--line);padding-left:18px;color:var(--muted)}nav{display:flex;gap:27px;align-items:center;font-size:14px}nav a{padding:12px 0}nav a:hover,nav a[aria-current=page]{color:var(--green)}nav .contact-link{border:1px solid #5c695f;padding:11px 18px}.menu{display:none;background:transparent;color:var(--text);border:1px solid var(--line);padding:9px 14px}.eyebrow{font:13px/1.5 'Courier New',monospace;letter-spacing:.13em;text-transform:uppercase;color:var(--green);margin:0 0 25px}.hero{position:relative;min-height:650px;display:flex;align-items:center;overflow:hidden}.hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 61%}.hero:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,17,16,.94),rgba(10,17,16,.59) 48%,rgba(10,17,16,.12)),linear-gradient(0deg,var(--bg),transparent 30%)}.hero-content{position:relative;z-index:1;padding:90px 0 105px}.hero h1{font-size:clamp(48px,6.3vw,90px);font-weight:500;line-height:1.04;letter-spacing:-.055em;max-width:850px;margin:0 0 26px}.hero h1 em{color:var(--green);font-style:normal}.hero p.lead{max-width:510px;font-size:20px;color:#dae1dc}.actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}.button{display:inline-flex;justify-content:space-between;align-items:center;gap:25px;min-height:52px;padding:12px 23px;background:var(--green);color:#11170b;font-weight:600;font-size:15px;border:1px solid var(--green);cursor:pointer}.button:hover{background:#d0ff77}.button.secondary{background:transparent;color:var(--text);border-color:#7a867e}.button.secondary:hover{border-color:var(--green);color:var(--green)}.sector-bar{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.sector-bar a{padding:28px 22px;border-right:1px solid var(--line);font-size:17px}.sector-bar a:first-child{padding-left:0}.sector-bar a:last-child{border:0}.sector-bar span{font:13px 'Courier New',monospace;color:var(--green);margin-right:12px}.sector-bar a:hover{color:var(--green)}section.section{padding:95px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:40px;margin-bottom:42px}h2{font-size:clamp(32px,4vw,52px);line-height:1.13;letter-spacing:-.04em;font-weight:500;margin:0 0 22px}h3{font-size:24px;line-height:1.28;letter-spacing:-.02em;font-weight:500;margin:0 0 14px}p{margin:0 0 20px}.muted{color:var(--muted)}.text-link{color:var(--green);border-bottom:1px solid #697f3f;padding-bottom:5px;font-size:15px;white-space:nowrap}.services{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line)}.service{padding:32px 30px 30px 0;border-bottom:1px solid var(--line);margin-right:30px}.service .number{font:14px 'Courier New',monospace;color:var(--green);display:block;margin-bottom:30px}.service p{color:var(--muted);font-size:16px;max-width:350px}.service a:hover h3{color:var(--green)}.service a{display:block}.light{background:#eaf0e9;color:#15211c}.light .eyebrow{color:#456725}.light .muted{color:#536157}.light .text-link{color:#304a14}.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.project-card{border:1px solid #b5c0b4;padding:27px;display:flex;flex-direction:column;min-height:255px;position:relative;transition:background .16s}.project-card:hover{background:#dce6d8}.project-card .category{font:12px/1.4 'Courier New',monospace;letter-spacing:.07em;text-transform:uppercase;margin-bottom:27px;color:#53644e}.project-card h3{font-size:24px;flex:1}.project-card .service-label{font-size:15px;color:#48594b;margin-bottom:20px}.card-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid #b5c0b4;padding-top:15px;font-size:13px}.card-bottom .arrow{font-size:22px}.feature{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.feature img{width:100%;aspect-ratio:1.12;object-fit:cover}.feature p{color:var(--muted)}figure{margin:0}figcaption{color:var(--muted);font-size:12px;margin-top:8px}.statement{border-top:1px solid var(--line);padding:70px 0;display:grid;grid-template-columns:1.6fr 1fr;gap:45px;align-items:center}.statement h2{margin:0}.statement .button{justify-self:end}footer{background:#0a1010;padding:55px 0 25px;font-size:15px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:50px}.footer-grid .brand{margin-bottom:25px}.footer-grid p{color:var(--muted);font-size:14px}.footer-grid h3{font:13px 'Courier New',monospace;color:var(--green);letter-spacing:.08em;text-transform:uppercase}.footer-grid a:not(.brand){display:block;margin-bottom:9px}.footer-bottom{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:45px;padding-top:20px;color:var(--muted);font-size:12px}.page-top{padding:55px 0 62px;border-bottom:1px solid var(--line)}.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:48px}.breadcrumbs a:hover{color:var(--green)}.page-top h1{font-size:clamp(40px,5.5vw,72px);max-width:1050px;line-height:1.08;font-weight:500;letter-spacing:-.045em;margin:0 0 24px;overflow-wrap:break-word}.page-top .intro{max-width:760px;color:var(--muted);font-size:20px}.filters{padding:30px 0;border-bottom:1px solid #b5c0b4}.chips{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:24px}.chip{padding:10px 16px;background:transparent;border:1px solid #a4b19f;color:#253523;cursor:pointer;font-size:14px}.chip[aria-pressed=true]{background:#19271a;color:white;border-color:#19271a}.filter-fields{display:grid;grid-template-columns:2fr 1fr 1fr auto;gap:16px;align-items:end}label{display:block;font-size:14px}input,select,textarea{width:100%;background:#f8fbf5;border:1px solid #9ca998;border-radius:0;padding:12px;color:#172018;margin-top:6px;min-width:0}input::placeholder{color:#65725f}select{color-scheme:light}textarea{resize:vertical;min-height:160px}.reset{font-size:14px;border:0;border-bottom:1px solid #51604c;background:transparent;min-height:49px;cursor:pointer;color:#253523}.results-head{display:flex;justify-content:space-between;gap:20px;padding:25px 0;color:#4b5f47;font-size:14px}.results{padding-bottom:55px}.empty{padding:50px 0}.note{font-size:14px;line-height:1.65;border-left:2px solid var(--green);padding:0 0 0 18px;color:var(--muted);max-width:900px}.light .note{color:#536157;border-color:#617e30}.two-col{display:grid;grid-template-columns:1.6fr 1fr;gap:85px}.prose{max-width:760px}.prose h2{font-size:33px;margin:40px 0 22px}.prose h2:first-child{margin-top:0}.prose p,.prose li{color:var(--muted)}.prose ul{padding-left:20px}.prose li{padding:5px 0}.facts{padding:28px;background:var(--surface);align-self:start}.facts h2{font-size:24px}.facts dl{margin:0}.facts dt{font:12px 'Courier New',monospace;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-top:24px}.facts dd{margin:6px 0 0;font-size:17px}.people{display:grid;grid-template-columns:1fr 1fr;gap:36px}.person{padding:40px;border-top:3px solid var(--green);background:var(--surface)}.person h2{font-size:37px}.person .role{color:var(--green);font-size:14px}.person p{color:var(--muted)}.contact-form{padding:35px;background:var(--surface)}.contact-form label{margin-bottom:20px}.contact-form input,.contact-form select,.contact-form textarea{background:var(--bg);color:var(--text);border-color:#647065;color-scheme:dark}.contact-form .note{margin-top:25px}.big-contact{font-size:clamp(24px,3vw,39px);letter-spacing:-.02em;overflow-wrap:anywhere}.big-contact a{display:block;margin-bottom:20px}.big-contact a:hover{color:var(--green)}.field-image{width:100%;height:360px;object-fit:cover;margin:0 0 50px}.legal-banner{padding:20px;border:1px solid #647343;background:#202818;color:#d9e6c7;margin-bottom:35px;font-size:15px}[hidden]{display:none!important}@media(min-width:1600px){.hero{min-height:750px}}@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.brand small{display:none}nav{gap:18px}.feature,.two-col{gap:40px}.project-grid{grid-template-columns:repeat(2,1fr)}.filter-fields{grid-template-columns:2fr 1fr}.services{grid-template-columns:repeat(2,1fr)}.sector-bar{grid-template-columns:repeat(2,1fr)}.sector-bar a{border-bottom:1px solid var(--line)}.sector-bar a:nth-child(3){padding-left:0}.sector-bar a:nth-child(2){border-right:0}.hero h1{font-size:72px}}@media(max-width:720px){.wrap{width:calc(100% - 40px)}.header-inner{min-height:80px}.brand strong{font-size:37px}.menu{display:block}nav{display:none;position:absolute;left:0;right:0;top:80px;background:var(--bg);padding:20px;flex-direction:column;align-items:stretch;border-bottom:1px solid var(--line)}nav.open{display:flex}.hero{min-height:590px}.hero h1{font-size:clamp(45px,9.7vw,69px)}.hero-content{padding:75px 0}.hero p.lead{font-size:18px}.hero:after{background:linear-gradient(90deg,#0c1413e8,#0c141375),linear-gradient(0deg,var(--bg),transparent 45%)}.eyebrow{font-size:12px}.hero .eyebrow{max-width:290px}.sector-bar a{padding:20px 10px;font-size:14px}.sector-bar span{margin-right:5px}.section-head{display:block}.section-head .text-link{display:inline-block;margin-top:12px}section.section{padding:65px 0}.project-grid,.feature,.two-col,.people,.footer-grid,.statement{grid-template-columns:1fr}.services{grid-template-columns:1fr}.service{margin:0;padding:27px 0}.service .number{margin-bottom:16px}.project-card{min-height:245px}.feature{gap:35px}.feature img{aspect-ratio:1.5}.statement{padding:55px 0;gap:25px}.statement .button{justify-self:start}.footer-grid{gap:28px}.page-top{padding:32px 0 42px}.breadcrumbs{margin-bottom:30px}.page-top .intro{font-size:18px}.filter-fields{grid-template-columns:1fr}.chips{gap:6px}.chip{padding:9px 11px;font-size:13px}.results-head{flex-direction:column;gap:8px}.person{padding:27px}.contact-form{padding:24px}.field-image{height:240px}.big-contact{font-size:26px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Original EL-E wordmark: preserve original colors, proportions and white background. */
.brand{display:inline-flex;flex:0 0 auto;background:#fff;padding:9px 12px;max-width:100%;width:278px}.brand .original-logo{display:block;width:100%;height:auto;object-fit:contain}.footer-grid .brand{width:278px}.header-inner{gap:24px}@media(max-width:1000px){.header-inner .brand{width:225px}}@media(max-width:720px){.header-inner .brand{width:225px;padding:7px 10px}}@media(max-width:380px){.header-inner .brand{width:190px}}

/* Compact PV imagery on home and energy pages. */
.feature img[src$="solar-panels-unsplash.jpg"]{height:250px;aspect-ratio:auto;object-fit:cover;object-position:center 70%}.field-image[src$="solar-panels-unsplash.jpg"]{height:240px;object-position:center 70%;margin-bottom:0}@media(max-width:720px){.feature img[src$="solar-panels-unsplash.jpg"],.field-image[src$="solar-panels-unsplash.jpg"]{height:180px}}

/* One-page sections and native keyboard-accessible disclosures. */
.header-inner{min-height:90px}.disclosure-list{border-top:1px solid var(--line)}details summary{cursor:pointer;touch-action:manipulation}summary:focus-visible{outline:3px solid var(--green);outline-offset:5px}.service-disclosure{border-bottom:1px solid var(--line)}.service-disclosure>summary{list-style:none;display:grid;grid-template-columns:50px 1fr 30px;gap:15px;padding:27px 0;align-items:center}.service-disclosure>summary::-webkit-details-marker{display:none}.service-disclosure>summary:after{content:'+';font-size:28px;color:var(--green)}.service-disclosure[open]>summary:after{content:'−'}.service-disclosure .number{color:var(--green);font:14px monospace}.service-disclosure>summary strong{font-size:28px;font-weight:500;line-height:1.3}.summary-copy{display:block;font-size:16px;color:var(--muted);margin-top:5px}.disclosure-content{padding:0 0 30px 65px}.disclosure-content h3{margin-top:30px}.sectors-home{background:#192020}.sector-panels{display:grid;grid-template-columns:1fr 1fr;gap:36px}.sector-panel{border-top:1px solid #56635c;padding:28px 0}.sector-panel>h3{font-size:34px}.sector-panel>p:not(.eyebrow){color:var(--muted)}.sector-detail summary{color:var(--green);font-size:15px;padding:6px 0}.sector-detail h4{font-size:21px;line-height:1.3;font-weight:500;margin:28px 0 13px}.reference-detail{font-size:14px;margin-top:15px}.reference-detail summary{color:#304a14}.reference-detail dl{margin-bottom:12px}.reference-detail dt{font-weight:600;margin-top:12px}.reference-detail dd{margin:4px 0}.reference-detail p{font-size:13px;color:#48594b}.more-projects{margin:30px auto 0;display:flex}.project-grid{align-items:start}.onepage-footer{padding-top:65px}.footer-topline{display:flex;justify-content:space-between;align-items:center;gap:25px;margin-bottom:55px}.footer-topline .eyebrow{margin:0}.footer-about-contact{display:grid;grid-template-columns:1.15fr 1fr;gap:90px}.footer-about-contact h2{font-size:40px}.footer-about-contact p{font-size:16px}.footer-people{display:grid;grid-template-columns:1fr 1fr;gap:25px;margin-top:30px}.footer-people h3{font-size:19px}.footer-people p{font-size:14px;color:var(--muted)}.footer-about-contact .big-contact{font-size:28px}.footer-inquiry{margin-top:30px;border-top:1px solid var(--line);padding-top:20px}.footer-inquiry>summary{color:var(--green);font-size:16px}.footer-inquiry .contact-form{margin-top:20px;padding:24px}#leistungen,#fachbereiche,#referenzen,#kontakt,#ueber-uns{scroll-margin-top:20px}@media(max-width:900px){.footer-about-contact{gap:40px}.footer-people{grid-template-columns:1fr}}@media(max-width:720px){.sector-panels,.footer-about-contact{grid-template-columns:1fr}.footer-about-contact{gap:50px}.footer-topline{align-items:start;flex-direction:column}.service-disclosure>summary strong{font-size:24px}.service-disclosure>summary{grid-template-columns:28px 1fr 22px;gap:10px}.disclosure-content{padding-left:0}.footer-about-contact h2{font-size:34px}.sector-panel>h3{font-size:30px}.header-inner{min-height:80px}}

/* Six compact reference cards per page. */
#referenzen .project-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;align-items:start}
#referenzen .project-card{display:block;min-height:0;padding:22px;border:1px solid #b5c0b4}
#referenzen .reference-detail{margin:0;font-size:14px}
#referenzen .reference-detail>summary{display:flex;flex-direction:column;list-style:none;color:#15211c;min-height:175px;gap:12px}
#referenzen .reference-detail>summary::-webkit-details-marker{display:none}
.reference-name{font-size:20px;line-height:1.3;font-weight:500;overflow-wrap:anywhere}
.reference-service{font-size:14px;line-height:1.45;color:#48594b}
.reference-status{font-size:14px;border-top:1px solid #b5c0b4;padding-top:12px;width:100%;margin-top:auto;display:flex;justify-content:space-between;gap:10px}
.reference-status:after{content:'+';font-size:20px;line-height:1}
.reference-detail[open] .reference-status:after{content:'−'}
#referenzen .reference-detail dl{border-top:1px solid #b5c0b4;padding-top:12px}
#referenzen .section-head{margin-bottom:20px}
#referenzen .results{padding-bottom:0}
@media(max-width:1000px){#referenzen .project-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:720px){#referenzen .project-grid{grid-template-columns:1fr}#referenzen .reference-detail>summary{min-height:140px}}
/* About section follows references; footer is dedicated to contact. */
.about-home{border-bottom:1px solid var(--line)}.about-home>.wrap>p.muted{max-width:750px}.about-home .footer-people{max-width:1050px;gap:60px;margin-top:40px}.about-home .footer-people h3{font-size:25px}.about-home .footer-people p{font-size:17px}.footer-about-contact{display:block}.footer-about-contact #kontakt{max-width:800px}.footer-inquiry .contact-form{max-width:650px}@media(max-width:720px){.about-home .footer-people{gap:25px}.about-home .footer-people h3{font-size:23px}}

/* Balanced service text and compact contact footer. */
.disclosure-content strong{font-size:inherit;line-height:inherit;font-weight:700;color:var(--text)}
.disclosure-content h3{font-size:22px;line-height:1.35;margin:26px 0 14px}
.disclosure-content li{padding:5px 0;margin-bottom:8px}
.onepage-footer{padding:36px 0 20px}
.onepage-footer>.wrap{display:grid;grid-template-columns:230px minmax(0,1fr);gap:24px 55px}
.onepage-footer .footer-topline{display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-start;gap:14px;margin:0}
.onepage-footer .original-logo{width:220px;max-width:100%;height:auto}
.onepage-footer .footer-topline .eyebrow{font-size:12px}
.onepage-footer #kontakt{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:10px 32px;max-width:none}
.onepage-footer #kontakt>.eyebrow{grid-column:1/-1;margin:0;font-size:12px}
.onepage-footer #kontakt>h2{grid-column:1/-1;font-size:28px;line-height:1.2;margin:0 0 10px}
.onepage-footer #kontakt>h2 br{display:none}
.onepage-footer .big-contact{font-size:20px;letter-spacing:0;line-height:1.5}
.onepage-footer .big-contact a{margin:0 0 6px}
.onepage-footer #kontakt>p.muted{font-size:15px;line-height:1.6;margin:0}
.onepage-footer #kontakt>.text-link{grid-column:2;font-size:14px;justify-self:start;white-space:normal}
.onepage-footer .footer-inquiry{grid-column:1/-1;margin:10px 0 0;padding-top:12px}
.onepage-footer .footer-inquiry>summary{font-size:15px}
.onepage-footer .footer-bottom{grid-column:1/-1;margin-top:0;padding-top:16px;font-size:13px}
@media(max-width:900px){.onepage-footer>.wrap{grid-template-columns:180px minmax(0,1fr);column-gap:30px}.onepage-footer .original-logo{width:180px}.onepage-footer #kontakt{column-gap:20px}.onepage-footer .big-contact{font-size:18px}}
@media(max-width:720px){.onepage-footer{padding-top:28px}.onepage-footer>.wrap{grid-template-columns:1fr;gap:22px}.onepage-footer .footer-topline{flex-direction:row;align-items:center;justify-content:space-between}.onepage-footer .original-logo{width:160px}.onepage-footer #kontakt{grid-template-columns:1fr;gap:12px}.onepage-footer #kontakt>.text-link{grid-column:1}.onepage-footer #kontakt>h2{font-size:25px}.onepage-footer .footer-bottom{gap:10px}}
/* Section navigation for the onepager. */
header{position:sticky;top:0;z-index:30}.header-inner{min-height:90px}#leistungen,#fachbereiche,#referenzen,#ueber-uns,#kontakt{scroll-margin-top:115px}@media(max-width:1000px){.menu{display:block}nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--bg);padding:16px 24px;flex-direction:column;align-items:stretch;border-bottom:1px solid var(--line);gap:4px;max-height:calc(100dvh - 90px);overflow-y:auto}nav.open{display:flex}nav a{padding:12px 0}}@media(max-width:720px){.header-inner{min-height:80px}#leistungen,#fachbereiche,#referenzen,#ueber-uns,#kontakt{scroll-margin-top:100px}}

/* Align footer actions. */
.onepage-footer #kontakt>.text-link{grid-column:2;grid-row:4;align-self:start;font-size:14px;line-height:1.65}
.onepage-footer .footer-inquiry{grid-column:1;grid-row:4;margin:0;padding:0;border:0;align-self:start}
.onepage-footer .footer-inquiry>summary{font-size:14px;line-height:1.65;padding-bottom:5px}
.onepage-footer .footer-inquiry .contact-form{width:calc(200% + 32px);max-width:650px}
@media(max-width:900px){.onepage-footer .footer-inquiry .contact-form{width:calc(200% + 20px)}}
@media(max-width:720px){.onepage-footer #kontakt>.text-link{grid-column:1;grid-row:auto}.onepage-footer .footer-inquiry{grid-column:1;grid-row:auto}.onepage-footer .footer-inquiry .contact-form{width:100%}}

.brand .original-logo{background:#fff}

.onepage-footer #kontakt>.text-link{border-bottom:0}

.onepage-footer .footer-badge{display:block;width:70px;height:39px;object-fit:contain}
@media(max-width:720px){.onepage-footer .footer-topline{flex-direction:column;align-items:flex-start}}

/* Approved white and green logo on dark background. */
.brand{background:transparent;padding:0}
.brand .original-logo{background:transparent;aspect-ratio:4.4 / 1;object-fit:cover;height:auto}
@media(max-width:720px){.header-inner .brand{padding:0}}

/* Keep long German service headings inside narrow mobile layouts. */
@media(max-width:720px){.service-disclosure>summary{grid-template-columns:24px minmax(0,1fr) 20px;padding:22px 0;gap:8px}.service-disclosure>summary>span{min-width:0}.service-disclosure>summary strong{font-size:20px;overflow-wrap:anywhere;hyphens:none}.summary-copy{font-size:16px;line-height:1.55}.service-disclosure>summary:after{justify-self:end}}

.field-image[src$="rail-tunnel-unsplash.jpg"]{object-position:center 58%}