*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;overflow-x:hidden;font-family:Inter,Arial,sans-serif;color:#102b43;background:#fff;line-height:1.55}.container{width:min(1180px,92%);margin:auto}.header{height:76px;background:#fff;position:sticky;top:0;z-index:10;box-shadow:0 2px 15px #0b22330d}.nav{height:76px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#102b43}.brand-logo{display:block;width:235px;height:auto;max-height:58px;object-fit:contain}.brand strong{display:block;font-size:27px;letter-spacing:3px;line-height:1}.brand small{display:block;font-size:8px;letter-spacing:1px;margin-top:4px;font-weight:700}.brand-mark{width:43px;height:43px;display:grid;place-items:center;font-weight:800;font-size:27px;font-style:italic;background:linear-gradient(145deg,#10304b 55%,#f47721 56%);color:#fff;clip-path:polygon(50% 0,100% 100%,72% 100%,50% 43%,28% 100%,0 100%)}.menu{display:flex;align-items:center;gap:29px}.menu a{color:#1c3449;text-decoration:none;font-size:14px;font-weight:600}.menu a:hover,.menu a.active{color:#f47721}.nav-cta{background:#ff7b1a!important;color:#fff!important;padding:12px 20px;border-radius:6px}.menu-btn{display:none;border:0;background:none;font-size:25px;line-height:1;width:44px;height:44px;border-radius:8px;align-items:center;justify-content:center;color:#102b43;cursor:pointer;padding:0}.menu-btn:focus-visible{outline:2px solid #f47721;outline-offset:2px}.hero{min-height:600px;position:relative;background:url("images/eigene/aussen-waermepumpe-01.jpeg") center/cover}.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,31,49,.9) 0%,rgba(6,31,49,.67) 44%,rgba(6,31,49,.08) 78%)}.hero-content{position:relative;padding:125px 0 105px;color:white;max-width:1180px}.eyebrow,.section-kicker{font-size:12px;letter-spacing:2px;font-weight:800;color:#f47721;margin-bottom:14px}.eyebrow{color:#fff}.hero h1{font-size:56px;line-height:1.07;letter-spacing:-2px;margin:0 0 22px;max-width:720px}.hero h1 span{color:#ff7b1a}.hero p{font-size:18px;max-width:680px;margin:0 0 30px;color:#f4f7fa}.actions{display:flex;gap:14px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:0;border-radius:5px;padding:14px 22px;font:600 14px Inter;cursor:pointer;text-decoration:none}.btn.primary{background:#ff7b1a;color:#fff}.btn.ghost{color:#fff;border:1px solid #fff;background:transparent}.benefits{background:#f7f9fa;border-bottom:1px solid #e8edf0}.benefit-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding:26px 0}.benefit-grid>div{display:flex;gap:12px;align-items:center}.benefit-grid span{width:36px;height:36px;border-radius:50%;background:#e8f7ef;color:#13985a;display:grid;place-items:center;font-weight:800}.benefit-grid strong,.benefit-grid small{display:block}.benefit-grid strong{font-size:14px}.benefit-grid small{font-size:12px;color:#637180}.section{padding:86px 0}.section h2{font-size:38px;line-height:1.15;letter-spacing:-1px;margin:0 0 12px}.lead{max-width:760px;color:#627180;margin:0 0 34px}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card{border:1px solid #e7ebee;border-radius:8px;overflow:hidden;background:#fff;box-shadow:0 7px 25px #112c400b}.card-img{height:180px;background-size:cover;background-position:center}.heatpump{background-image:url("images/eigene/aussen-waermepumpe-01.jpeg")}.heating{background-image:url("images/eigene/innenanlage-01.jpeg")}.energy{background-image:url("images/eigene/innenanlage-02.jpeg")}.service{background-image:url("images/eigene/aussen-waermepumpe-01.jpeg")}.card-body{padding:19px}.icon{color:#f47721;font-size:22px;font-weight:800}.card h3{margin:3px 0 8px;font-size:19px}.card p{font-size:14px;color:#657380;min-height:66px}.card a{color:#f47721;text-decoration:none;font-weight:700;font-size:13px}.section-light{background:#f5f8fa}.split-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:70px;align-items:center}.split-grid p{color:#627180;max-width:520px;margin:0 0 27px}.house-image{min-height:420px;border-radius:10px;background:url("images/eigene/aussen-waermepumpe-02.jpeg") center/cover;position:relative}.checklist{position:absolute;right:-25px;bottom:28px;background:#fff;border-radius:7px;padding:20px 24px;box-shadow:0 15px 45px #0d253c22}.checklist div{margin:9px 0;font-size:13px;color:#15965a;font-weight:800}.checklist span{color:#20384b;font-weight:500;margin-left:7px}.project-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:15px}.project{height:260px;border-radius:8px;background-size:cover;background-position:center;display:flex;align-items:end;padding:20px;color:#fff;font-weight:700;position:relative;overflow:hidden}.project:before{content:"";position:absolute;inset:0;background:linear-gradient(transparent,rgba(0,0,0,.7))}.project span{position:relative}.p1{background-image:url("images/eigene/aussen-waermepumpe-01.jpeg")}.p2{background-image:url("images/eigene/innenanlage-01.jpeg")}.p3{background-image:url("images/eigene/innenanlage-02.jpeg")}.partners{padding:60px 0;background:#fbfcfd;border-top:1px solid #edf0f2}.partner-row{display:flex;justify-content:space-between;align-items:center;gap:25px;flex-wrap:wrap;margin-top:30px;color:#183a55;font-weight:800;font-size:20px}.contact{padding:80px 0;background:#06283d;color:#fff}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:start}.contact h2{font-size:40px;line-height:1.12;margin:0 0 15px}.contact p{color:#c6d4dc;max-width:520px}.section-kicker.light{color:#ff8a2b}.contact-form{background:#fff;padding:25px;border-radius:8px;display:grid;gap:13px}.contact-form input,.contact-form select,.contact-form textarea{width:100%;border:1px solid #dbe2e7;border-radius:4px;padding:13px;font:14px Inter;color:#20384b;background:#fff}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:13px}.contact-form small{color:#7b8994;font-size:11px}.contact-form .btn{justify-self:start}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.2fr 1fr;gap:50px;padding:55px 0}.footer-grid>div{display:flex;flex-direction:column;gap:8px}.footer-grid strong{margin-bottom:7px}.footer-grid a,.footer-grid span,.footer-grid p{font-size:13px;color:#657482;text-decoration:none}.footer-brand{align-self:flex-start}.copyright{border-top:1px solid #e9edef;text-align:center;padding:18px;color:#81909a;font-size:11px}
@media(max-width:900px){
  .header{height:70px}
  .nav{height:70px}
  .brand-logo{width:205px;max-height:52px}
  .menu-btn{display:flex;flex:0 0 44px}
  .menu{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;padding:12px 4%;box-shadow:0 10px 24px rgba(0,0,0,.10);flex-direction:column;align-items:stretch;gap:2px;border-top:1px solid #edf0f2}
  .menu.open{display:flex}
  .menu a{padding:13px 12px;font-size:15px;border-radius:6px}
  .menu a:hover,.menu a.active{background:#f6f8fa}
  .menu .nav-cta{text-align:center;margin-top:6px;padding:13px 16px}
  .benefit-grid,.cards{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:45px}
  .split-grid,.contact-grid{grid-template-columns:1fr}
  .checklist{right:15px}
  .project-grid{grid-template-columns:1fr 1fr}
  .p1{grid-column:1/-1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:35px}
  .service-hero h1{font-size:48px}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .work-gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:240px}.work-item-wide{grid-column:span 2}
}
@media(max-width:600px){
  .container{width:min(100% - 28px,1180px)}
  .header,.nav{height:64px}
  .brand-logo{width:172px;max-height:46px}
  .menu-btn{flex-basis:42px;width:42px;height:42px;font-size:23px}
  .menu{top:64px;padding:10px 14px 14px}
  .menu a{padding:12px 10px}
  .hero{min-height:620px}
  .hero-content{padding:78px 0 70px}
  .hero h1{font-size:36px;letter-spacing:-1.2px}
  .hero p{font-size:16px}
  .actions{flex-direction:column;align-items:stretch}
  .actions .btn{width:100%}
  .benefit-grid,.cards,.project-grid,.form-row,.footer-grid{grid-template-columns:1fr}
  .benefit-grid{gap:16px;padding:20px 0}
  .section{padding:58px 0}
  .section h2,.contact h2{font-size:30px}
  .house-image{min-height:420px}
  .checklist{left:12px;right:12px;bottom:15px;padding:15px 17px}
  .checklist div{font-size:12px}
  .partner-row{font-size:16px;gap:18px;justify-content:flex-start}
  .contact{padding:60px 0}
  .contact-form{padding:18px}
  .contact-form .btn{width:100%}
  .service-hero{min-height:560px}
  .service-hero-content{padding:78px 0 70px}
  .service-hero h1{font-size:38px;letter-spacing:-1.2px}
  .service-hero p{font-size:17px}
  .feature-grid{grid-template-columns:1fr}
  .service-photo{min-height:300px}
  .work-gallery{grid-template-columns:1fr;grid-auto-rows:250px}.work-item-wide{grid-column:span 1}
  .legal-hero{padding:62px 0 55px}
  .legal-hero h1{font-size:36px}
}


.service-hero{min-height:560px;position:relative;background:url("images/eigene/aussen-waermepumpe-01.jpeg") center/cover}
.service-hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,29,46,.92),rgba(5,29,46,.62) 55%,rgba(5,29,46,.12))}
.service-hero-content{position:relative;color:#fff;padding:120px 0 100px}
.service-hero h1{font-size:60px;line-height:1.03;letter-spacing:-2px;margin:0 0 20px}
.service-hero h1 span{color:#ff7b1a}
.service-hero p{font-size:19px;max-width:620px;color:#eef4f7;margin:0 0 30px}
.narrow{max-width:820px}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:34px}
.feature-grid article{background:#fff;border:1px solid #e6ebee;border-radius:8px;padding:25px;box-shadow:0 8px 25px #0d2a3b08}
.feature-grid span{font-size:12px;font-weight:800;color:#f47721;letter-spacing:1px}
.feature-grid h3{font-size:18px;margin:12px 0 8px}
.feature-grid p{font-size:14px;color:#657482;margin:0}
.service-photo{min-height:460px;border-radius:10px;background:url("images/eigene/aussen-waermepumpe-01.jpeg") center/cover}
.steps{margin-top:25px;display:grid;gap:18px}
.steps>div{display:flex;gap:18px}
.steps b{width:38px;height:38px;min-width:38px;border-radius:50%;display:grid;place-items:center;background:#eaf7f0;color:#13985a;font-size:12px}
.steps strong{display:block;margin-bottom:2px}
.steps p{margin:0;color:#657482;font-size:14px}
.info-box{background:#fff;border-left:4px solid #ff7b1a;padding:30px;border-radius:6px;box-shadow:0 10px 30px #0d2a3b0d}
.info-box strong{font-size:20px}
.info-box p{color:#657482;margin-bottom:0}
.faq details{border-top:1px solid #dfe5e8;padding:20px 0}
.faq details:last-child{border-bottom:1px solid #dfe5e8}
.faq summary{cursor:pointer;font-weight:700;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";float:right;color:#f47721;font-size:20px}
.faq details[open] summary:after{content:"–"}
.faq details p{color:#657482;max-width:720px;margin:12px 0 0}
.mini-contact{background:#fff;color:#193348;border-radius:8px;padding:30px;display:flex;flex-direction:column;gap:10px;align-self:start}
.mini-contact strong{font-size:18px}
.mini-contact span{color:#657482;font-size:14px}
@media(max-width:900px){.feature-grid{grid-template-columns:repeat(2,1fr)}.service-hero h1{font-size:48px}}
@media(max-width:600px){.feature-grid{grid-template-columns:1fr}.service-hero{min-height:590px}.service-hero-content{padding:90px 0}.service-hero h1{font-size:40px}.service-photo{min-height:330px}}

.heating-hero{background-image:url("images/eigene/innenanlage-01.jpeg")}
.heating-photo{min-height:460px;border-radius:10px;background:url("images/eigene/rohrleitungen.jpeg") center/cover}

.energy-hero{background-image:url("images/eigene/energieberatung-beratung.png")} .energy-photo{min-height:460px;border-radius:10px;background:url("images/eigene/energieberatung-beratung.png") center/cover}


/* Wartung & Service */
.maintenance-hero{background-image:url("images/eigene/service-aussen.png") }
.maintenance-photo{min-height:460px;border-radius:10px;background:url("images/eigene/service-innen.png") center/cover}

/* Rechtliche Seiten */
.legal-hero{background:#f2f6f8;padding:82px 0 72px;border-bottom:1px solid #e4eaee}
.legal-hero h1{font-size:52px;line-height:1.05;letter-spacing:-1.5px;margin:8px 0 14px;color:#102b43}
.legal-hero p{font-size:18px;color:#657482;margin:0;max-width:700px}
.legal-content{max-width:900px}
.legal-content h2{font-size:25px;margin:42px 0 12px;color:#102b43}
.legal-content p{color:#536674;line-height:1.75}
.legal-warning{margin-top:45px}
@media(max-width:700px){.legal-hero h1{font-size:38px}}

/* Kontaktformular */
.contact-form{display:grid;gap:18px}
.contact-form label{display:grid;gap:7px;font-size:13px;font-weight:700;color:#193348}
.contact-form label span{font-weight:500;color:#7a8790}
.contact-form input:not([type="checkbox"]),.contact-form select,.contact-form textarea{
  width:100%;box-sizing:border-box;border:1px solid #d8e0e5;border-radius:6px;background:#fff;
  padding:13px 14px;font:inherit;font-size:14px;color:#193348;outline:none;transition:border-color .2s,box-shadow .2s;
}
.contact-form input:not([type="checkbox"]):focus,.contact-form select:focus,.contact-form textarea:focus{
  border-color:#f47721;box-shadow:0 0 0 3px rgba(244,119,33,.10)
}
.contact-form textarea{resize:vertical;min-height:130px}
.contact-form .consent{display:flex;grid-template-columns:none;align-items:flex-start;gap:10px;font-size:12px;font-weight:500;color:#657482;line-height:1.5}
.contact-form .consent input{margin-top:3px;accent-color:#f47721}
.contact-form .consent a{color:#f47721;font-weight:700}
.form-note{font-size:11px;color:#7a8790}
@media(max-width:600px){.contact-form .form-row{grid-template-columns:1fr}}

/* Eigene Referenzprojekte */
.work-gallery{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:230px;gap:14px;margin-top:34px}
.work-item{position:relative;display:block;overflow:hidden;border-radius:9px;background:#dfe7eb;min-height:230px;text-decoration:none;box-shadow:0 8px 25px #0d2a3b12}
.work-item img{width:100%;height:100%;display:block;object-fit:cover;transition:transform .35s ease}
.work-item:hover img{transform:scale(1.035)}
.work-item:after{content:"";position:absolute;inset:0;background:linear-gradient(transparent 48%,rgba(5,25,40,.78))}
.work-item span{position:absolute;z-index:1;left:16px;right:16px;bottom:14px;color:#fff;font-size:13px;font-weight:700;line-height:1.35}
.work-item-wide{grid-column:span 2}
@media(max-width:900px){.work-gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:240px}.work-item-wide{grid-column:span 2}}
@media(max-width:600px){.work-gallery{grid-template-columns:1fr;grid-auto-rows:260px}.work-item-wide{grid-column:span 1}}

/* Unsichtbares Honeypot-Feld gegen einfache Formularbots */
.contact-form .hp-field{position:absolute!important;left:-9999px!important;width:1px!important;height:1px!important;opacity:0!important;pointer-events:none!important}


/* =========================================================
   HEATOTEC – dedicated smartphone layout
   This block intentionally creates a separate mobile header
   and compact mobile typography/form treatment.
   ========================================================= */
.mobile-header{display:none}

@media screen and (max-width:767px){
  /* Do not reuse the desktop header on phones. */
  .header{display:none!important}
  .mobile-header{
    display:block;
    position:sticky;
    top:0;
    z-index:1000;
    background:#fff;
    border-bottom:1px solid #e8edf0;
    box-shadow:0 2px 12px rgba(10,35,55,.08);
  }
  .mobile-header-inner{
    width:calc(100% - 24px);
    min-height:70px;
    margin:0 auto;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
  }
  .mobile-brand{
    display:flex;
    align-items:center;
    min-width:0;
    flex:1 1 auto;
    text-decoration:none;
  }
  .mobile-brand img{
    display:block;
    width:clamp(150px,52vw,176px);
    height:auto;
    max-width:100%;
  }
  .mobile-menu-btn{
    flex:0 0 40px;
    width:40px;
    height:40px;
    padding:8px;
    border:1px solid #dfe7eb;
    border-radius:8px;
    background:#f7f9fa;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    gap:5px;
    cursor:pointer;
  }
  .mobile-menu-btn span{
    display:block;
    width:19px;
    height:2px;
    background:#102b43;
    border-radius:2px;
    transition:.18s ease;
  }
  .mobile-menu-btn.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .mobile-menu-btn.is-open span:nth-child(2){opacity:0}
  .mobile-menu-btn.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .mobile-menu{
    display:none;
    width:100%;
    padding:6px 12px 12px;
    background:#fff;
    border-top:1px solid #edf1f3;
    box-shadow:0 12px 25px rgba(10,35,55,.10);
  }
  .mobile-menu.open{display:flex;flex-direction:column;gap:2px}
  .mobile-menu a{
    display:block;
    padding:11px 12px;
    color:#18354b;
    text-decoration:none;
    font-size:14px;
    line-height:1.25;
    font-weight:600;
    border-radius:6px;
  }
  .mobile-menu a:active{background:#f3f6f8}
  .mobile-menu-cta{
    margin-top:5px;
    text-align:center;
    color:#fff!important;
    background:#ff7b1a;
  }

  /* Global mobile typography: deliberately compact, without shrinking usability. */
  body{font-size:14px;line-height:1.5;-webkit-text-size-adjust:100%;text-size-adjust:100%}
  .container{width:calc(100% - 24px);max-width:none}
  .section{padding:46px 0}
  .section-kicker,.eyebrow{font-size:9px;letter-spacing:1.25px;line-height:1.3}
  .section h2{font-size:27px;line-height:1.12;letter-spacing:-.5px}
  .lead{font-size:14px;line-height:1.55}

  /* Home hero is a mobile composition, not a scaled desktop hero. */
  .hero{min-height:0;height:auto}
  .hero-content{padding:70px 0 48px}
  .hero h1{font-size:32px;line-height:1.08;letter-spacing:-.9px}
  .hero p{font-size:14px;line-height:1.55}
  .actions .btn{min-height:46px;font-size:13px;padding:11px 14px}

  /* Compact service cards and project gallery. */
  .cards{grid-template-columns:1fr;gap:13px}
  .card-img{height:170px}
  .card-body{padding:15px}
  .card h3{font-size:18px}
  .card p{font-size:13px;line-height:1.5}
  .work-gallery{gap:10px;grid-auto-rows:210px}
  .work-item,.work-item-wide{min-height:210px}
  .work-item span{font-size:11px}

  /* ===== CONTACT: specifically redesigned for phone ===== */
  .contact{padding:42px 0}
  .contact-grid{display:block}
  .contact-grid>div{margin-bottom:18px}
  .contact .section-kicker{font-size:9px;line-height:1.3;margin-bottom:7px}
  .contact h2{font-size:24px!important;line-height:1.12!important;letter-spacing:-.3px!important;margin:0 0 8px!important}
  .contact p{font-size:13px!important;line-height:1.5!important;margin:0!important}
  .contact-form{
    width:100%;
    padding:13px!important;
    gap:9px!important;
    border-radius:8px;
  }
  .contact-form label{
    display:block;
    font-size:11px!important;
    line-height:1.3;
    color:#20384b;
  }
  .contact-form label span{font-size:10px!important}
  .form-row{display:grid;grid-template-columns:1fr;gap:9px!important}
  .contact-form input:not([type="checkbox"]),
  .contact-form select,
  .contact-form textarea{
    display:block;
    width:100%;
    margin-top:4px;
    min-height:40px!important;
    padding:9px 10px!important;
    font-size:14px!important;
    line-height:1.3;
    border-radius:4px;
  }
  .contact-form textarea{min-height:95px!important;resize:vertical}
  .contact-form .consent{
    display:flex!important;
    align-items:flex-start;
    gap:7px;
    margin-top:1px;
    font-size:10px!important;
    line-height:1.35!important;
    color:#667582;
  }
  .contact-form .consent input[type="checkbox"]{
    flex:0 0 16px;
    width:16px;
    height:16px;
    margin:1px 0 0;
    padding:0;
  }
  .contact-form .consent span{display:block;min-width:0}
  .contact-form .consent a{color:#e96f16;font-weight:700}
  .contact-form .btn{
    width:100%!important;
    min-height:42px!important;
    padding:9px 12px!important;
    font-size:13px!important;
  }
  .contact-form .form-note{
    display:block;
    font-size:9px!important;
    line-height:1.3!important;
    color:#7b8994;
  }

  .footer-grid{gap:22px;padding:36px 0}
  .footer-grid p,.footer-grid a,.footer-grid span{font-size:12px}
  .copyright{font-size:9px;line-height:1.4}
}

@media screen and (max-width:374px){
  .mobile-header-inner{min-height:66px}
  .mobile-brand img{width:150px}
  .mobile-menu-btn{width:38px;height:38px;flex-basis:38px}
  .hero h1{font-size:29px}
  .section h2{font-size:25px}
  .contact h2{font-size:22px!important}
  .contact-form{padding:11px!important}
  .contact-form .consent{font-size:9.5px!important}
}