:root{
  --blue:#0B5FA5; --blue-deep:#063C66; --blue-soft:#E8F1F8;
  --warm:#E8530E; --warm-deep:#C0390A; --warm-2:#F39200;
  --ink:#22262B; --grey:#5C6873; --line:#E3E8ED;
  --bg:#fff; --bg-soft:#F5F8FB; --radius:14px; --maxw:1140px;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.15;font-weight:800;letter-spacing:-.01em}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase}
.note{background:#FFF7E8;border-bottom:1px dashed var(--warm-2);color:#7a4d00;font-size:.82rem;text-align:center;padding:8px 24px}

/* Header */
header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800}
.brand img{height:50px;width:50px;border-radius:50%}
.brand small{display:block;font-weight:600;color:var(--grey);font-size:.7rem;letter-spacing:.18em;text-transform:uppercase}
.menu{display:flex;gap:28px;align-items:center;font-weight:600;font-size:.97rem}
.menu a:hover{color:var(--blue)}
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:12px 22px;font-weight:700;font-size:.95rem;transition:.15s;border:none;cursor:pointer}
.btn-warm{background:var(--warm);color:#fff}.btn-warm:hover{background:var(--warm-deep)}
.btn-white{background:#fff;color:var(--blue-deep)}
.burger{display:none}

/* Hero — Video-Hintergrund mit zwei Welten */
.hero{position:relative;min-height:420px;height:60vh;max-height:560px;display:flex;align-items:center;justify-content:center;overflow:hidden;color:#fff;background:linear-gradient(120deg,#C0390A 0%,#7a3a2a 45%,#0a4a7d 55%,#063C66 100%)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;background:transparent}
.hero-overlay{position:absolute;inset:0;z-index:1;background:linear-gradient(120deg,rgba(192,57,10,.60) 0%,rgba(192,57,10,.18) 40%,rgba(6,60,102,.18) 60%,rgba(6,60,102,.64) 100%),radial-gradient(120% 120% at 50% 28%,transparent 42%,rgba(0,0,0,.45) 100%)}
.hero-content{position:relative;z-index:2;width:100%;max-width:var(--maxw);padding:0 24px;text-align:center}
.hero .tagline{margin-bottom:34px;font-weight:700;letter-spacing:.05em;font-size:.95rem;text-shadow:0 2px 12px rgba(0,0,0,.45)}
.worlds{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:34px}
.world{display:flex;flex-direction:column;justify-content:center;text-shadow:0 2px 12px rgba(0,0,0,.5)}
.world.warm{align-items:flex-start;text-align:left}
.world.cool{align-items:flex-end;text-align:right}
.world .elem{display:flex;align-items:center;gap:10px;font-size:.8rem;letter-spacing:.2em;font-weight:800;text-transform:uppercase}
.world.cool .elem{flex-direction:row-reverse}
.world .elem svg{width:24px;height:24px}
.world h2{font-size:clamp(2rem,4.6vw,3.5rem);margin:8px 0 12px}
.world p{max-width:32ch;opacity:.97;font-size:1.02rem}
.world .more{margin-top:18px;display:inline-flex;align-items:center;gap:9px;font-weight:700;border-bottom:2px solid rgba(255,255,255,.6);padding-bottom:3px;transition:.15s}
.world .more:hover{gap:14px;border-color:#fff}
.seal{text-align:center}
.seal img{width:140px;height:140px;border-radius:50%;border:6px solid rgba(255,255,255,.18);box-shadow:0 18px 50px rgba(0,0,0,.45)}

/* Intro */
.intro{padding:74px 0 64px;text-align:center;position:relative;overflow:hidden}
.intro-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.intro-veil{position:absolute;inset:0;background:rgba(255,255,255,.68);z-index:1}
.intro .wrap{position:relative;z-index:2}
.intro .eyebrow{color:var(--warm);font-weight:800;text-shadow:0 1px 14px rgba(255,255,255,.95),0 0 4px rgba(255,255,255,.7)}
.intro h2{font-size:clamp(2.1rem,4.3vw,3.1rem);margin:14px auto 18px;max-width:18ch;text-shadow:0 1px 22px rgba(255,255,255,.9),0 0 6px rgba(255,255,255,.7)}
.intro p{color:var(--ink);max-width:62ch;margin:0 auto;font-size:1.18rem;font-weight:500;text-shadow:0 1px 16px rgba(255,255,255,.9),0 0 4px rgba(255,255,255,.6)}
.stats{display:flex;justify-content:center;gap:0;margin-top:40px;flex-wrap:wrap}
.stats div{padding:0 36px;border-left:1px solid var(--line)}
.stats div:first-child{border-left:none}
.stats b{display:block;font-size:1.7rem;font-weight:800;color:var(--blue-deep);text-shadow:0 1px 16px rgba(255,255,255,.9),0 0 4px rgba(255,255,255,.6)}
.stats span{font-size:.96rem;color:var(--ink);font-weight:600;text-shadow:0 1px 12px rgba(255,255,255,.9),0 0 3px rgba(255,255,255,.6)}
.innung-wrap{margin-top:28px}
.innung{display:inline-flex;align-items:center;gap:9px;background:var(--blue-soft);color:var(--blue-deep);border-radius:999px;padding:10px 18px;font-weight:700;font-size:.92rem}
.innung svg{width:18px;height:18px;color:var(--warm);flex:none}
.innung.ft{background:transparent;border:1px solid #3a4047;color:#cfd6dd;margin-top:14px}
.innung.ft svg{color:var(--warm-2)}

/* Leistungen — horizontale Klapppanels */
.leist .head-hint{color:var(--grey);margin-top:8px}
.panels{display:flex;gap:10px;height:460px;margin:34px 0 6px}
.panel{position:relative;flex:1 1 0;min-width:54px;border-radius:16px;overflow:hidden;cursor:pointer;color:#fff;display:flex;flex-direction:column;justify-content:flex-end;transition:flex .45s cubic-bezier(.4,0,.2,1)}
.panel.warm{background:radial-gradient(600px 300px at 70% 15%,rgba(243,146,0,.30),transparent 60%),linear-gradient(160deg,#EA5A14,#C0390A)}
.panel.cool{background:radial-gradient(600px 300px at 70% 15%,rgba(120,190,240,.28),transparent 60%),linear-gradient(160deg,#0B6BB8,#063C66)}
.panel.dark{background:linear-gradient(160deg,#3a4047,#22262B)}
.panel::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 40%,rgba(0,0,0,.45));pointer-events:none;z-index:1}
.panel.is-active{flex:6 1 0}
.vlabel{position:absolute;left:0;right:0;bottom:26px;margin:0 auto;writing-mode:vertical-rl;transform:rotate(180deg);text-align:center;font-weight:800;font-size:1.02rem;letter-spacing:.03em;white-space:nowrap;z-index:3;text-shadow:0 2px 8px rgba(0,0,0,.45);transition:opacity .2s}
.panel.is-active .vlabel{opacity:0}
.pcontent{position:relative;z-index:3;padding:30px;min-width:300px;opacity:0;transform:translateY(10px);transition:opacity .35s .08s,transform .35s .08s}
.panel.is-active .pcontent{opacity:1;transform:none}
.pk{font-size:.74rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;opacity:.9}
.pcontent h3{font-size:1.5rem;margin:8px 0 10px}
.pcontent p{font-size:1rem;opacity:.96;max-width:44ch}
.ptags{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 18px}
.ptags li{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:6px 12px;font-size:.85rem;font-weight:600}
.plink{display:inline-flex;font-weight:700;border-bottom:2px solid rgba(255,255,255,.6);padding-bottom:3px;transition:.15s}
.plink:hover{border-color:#fff}

/* Panel-Hintergrundfotos (Tönung in Weltfarbe + Foto; ::after sorgt zusätzlich für Lesbarkeit unten) */
#heizung{background:linear-gradient(160deg,rgba(243,146,0,.20),rgba(232,83,14,.38)),url('fotos/heizung.jpg') center/cover no-repeat}
#sanitaer{background:linear-gradient(160deg,rgba(11,107,184,.22),rgba(6,60,102,.44)),url('fotos/sanitaer.jpg') center/cover no-repeat}
#rohr{background:linear-gradient(160deg,rgba(11,107,184,.22),rgba(6,60,102,.44)),url('fotos/rohr.jpg') center/cover no-repeat}
#wasserhygiene{background:linear-gradient(160deg,rgba(11,107,184,.22),rgba(6,60,102,.44)),url('fotos/wasserhygiene.jpg') center/cover no-repeat}
/* Gastechnik: warme Tönung abgeschwächt, damit die blaue Gasflamme nicht ins Bräunliche kippt */
#gastechnik{background:linear-gradient(160deg,rgba(243,146,0,.10),rgba(232,83,14,.22)),url('fotos/gastechnik.jpg') center/cover no-repeat}
#gewerbe{background:linear-gradient(160deg,rgba(58,64,71,.32),rgba(34,38,43,.60)),url('fotos/gewerbe.jpg') center/cover no-repeat}

/* Preise */
.preise{padding:74px 0;background:#fff;border-top:1px solid var(--line)}
.preise .ph{text-align:center;max-width:640px;margin:0 auto 40px}
.preise .ph .eyebrow{color:var(--warm)}
.preise .ph h2{font-size:clamp(1.8rem,3.4vw,2.4rem);margin-top:12px}
.preise .ph p{color:var(--grey);margin-top:10px}
.preis-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;max-width:920px;margin:0 auto}
.preis-card{border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;background:var(--bg-soft)}
.preis-card h3{font-size:1.15rem;margin-bottom:12px;color:var(--blue-deep)}
.preis-table{width:100%;border-collapse:collapse}
.preis-table td{padding:9px 0;border-bottom:1px solid var(--line);font-size:.98rem}
.preis-table td:last-child{text-align:right;font-weight:700;white-space:nowrap;color:var(--blue-deep)}
.preis-table tr:last-child td{border-bottom:none}
.preis-extra{margin-top:14px;font-size:.94rem;color:var(--ink)}
.preis-extra b{color:var(--blue-deep)}
.preis-note{text-align:center;color:var(--grey);font-size:.85rem;margin-top:24px}

/* Werte (01–04) — 2x2, Ghost-Nummern, abweichend vom Referenz-Look */
.werte{padding:74px 0;background:var(--bg-soft);border-top:1px solid var(--line)}
.werte .ph{text-align:center;max-width:640px;margin:0 auto 40px}
.werte .ph .eyebrow{color:var(--warm)}
.werte .ph h2{font-size:clamp(1.8rem,3.4vw,2.4rem);margin-top:12px}
.werte-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:920px;margin:0 auto}
.wert{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 30px 30px 34px;overflow:hidden}
.wert::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px}
.wert.warm::before{background:linear-gradient(var(--warm),var(--warm-2))}
.wert.cool::before{background:linear-gradient(#0B6BB8,#6FC2F5)}
.wert .ghost{position:absolute;top:-8px;right:18px;font-size:4.6rem;font-weight:800;line-height:1;color:var(--blue-soft);z-index:0}
.wert.warm .ghost{color:#FBE3D4}
.wert h3{position:relative;z-index:1;font-size:1.2rem;margin-bottom:8px}
.wert p{position:relative;z-index:1;color:var(--grey);font-size:.96rem;max-width:42ch}
@media(max-width:760px){.werte-grid{grid-template-columns:1fr}}

@media(max-width:760px){
  .panels{flex-direction:column;height:auto;gap:12px}
  .panel{flex:none;min-height:190px;border-radius:14px}
  .panel.is-active{flex:none}
  .vlabel{display:none}
  .pcontent{opacity:1;transform:none;min-width:0}
  .preis-grid{grid-template-columns:1fr}
}

/* Leistungen — breite Reihen */
.leist{background:var(--bg-soft);border-top:1px solid var(--line)}
.leist .head{padding:64px 0 8px;text-align:center}
.leist .head .eyebrow{color:var(--warm)}
.leist .head h2{font-size:clamp(1.8rem,3.6vw,2.5rem);margin-top:12px}
.reihen{max-width:var(--maxw);margin:30px auto 70px;padding:0 24px}
.reihe{display:grid;grid-template-columns:84px 1fr auto;align-items:center;gap:28px;padding:26px 26px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);margin-bottom:14px;position:relative;overflow:hidden;transition:.18s}
.reihe::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px}
.reihe.warm::before{background:linear-gradient(var(--warm),var(--warm-2))}
.reihe.cool::before{background:linear-gradient(#0B6BB8,#6FC2F5)}
.reihe.dark::before{background:linear-gradient(#3a4047,#62707d)}
.reihe:hover{transform:translateX(6px);box-shadow:0 12px 30px rgba(11,79,138,.10);border-color:transparent}
.reihe .idx{font-size:2.1rem;font-weight:800;color:var(--blue-soft);line-height:1}
.reihe.warm .idx{color:#FBDFCB}
.reihe .body h3{font-size:1.28rem;margin-bottom:5px}
.reihe .body .k{font-size:.72rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--grey)}
.reihe.warm .body .k{color:var(--warm)} .reihe.cool .body .k{color:var(--blue)}
.reihe .body p{color:var(--grey);font-size:.98rem;margin-top:3px}
.reihe .go{font-weight:800;color:var(--blue-deep);white-space:nowrap;transition:.15s}
.reihe:hover .go{color:var(--warm)}

/* Vier Säulen */
.saeulen{background:var(--ink);color:#fff;padding:56px 0}
.saeulen .row{display:grid;grid-template-columns:repeat(4,1fr)}
.saeulen .s{padding:6px 30px;border-left:1px solid #3a4047}
.saeulen .s:first-child{border-left:none}
.saeulen .n{font-size:.78rem;font-weight:800;color:var(--warm-2);letter-spacing:.1em}
.saeulen h3{font-size:1.12rem;margin:6px 0 8px}
.saeulen p{color:#A9B4BF;font-size:.92rem}

/* Über uns */
.about{padding:80px 0}
.about .wrap{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.about .eyebrow{color:var(--warm)}
.about h2{font-size:clamp(1.8rem,3.4vw,2.3rem);margin:12px 0 16px}
.about p{color:var(--grey);margin-bottom:14px}
.timeline{list-style:none;border-left:3px solid var(--blue-soft);padding-left:26px}
.timeline li{position:relative;padding-bottom:24px}.timeline li:last-child{padding-bottom:0}
.timeline li::before{content:"";position:absolute;left:-35px;top:3px;width:14px;height:14px;border-radius:50%;background:var(--warm);box-shadow:0 0 0 4px #fff}
.timeline b{display:block;color:var(--ink)} .timeline span{color:var(--grey);font-size:.95rem}

/* Page hero (Unterseiten) */
.page-hero{padding:64px 0 56px;color:#fff;position:relative}
.page-hero.warm{background:radial-gradient(700px 360px at 80% 10%,rgba(243,146,0,.30),transparent 60%),linear-gradient(150deg,#EA5A14,#C0390A)}
.page-hero.cool{background:radial-gradient(700px 360px at 80% 10%,rgba(120,190,240,.28),transparent 60%),linear-gradient(150deg,#0B6BB8,#063C66)}
.page-hero.dark{background:linear-gradient(150deg,#3a4047,#22262B)}
.page-hero .crumb{font-size:.85rem;opacity:.85;margin-bottom:14px}
.page-hero .crumb a{border-bottom:1px solid rgba(255,255,255,.4)}
.page-hero h1{font-size:clamp(2rem,4.4vw,3rem)}
.page-hero p{max-width:60ch;margin-top:14px;opacity:.95;font-size:1.1rem}

/* Detail */
.detail{padding:64px 0}
.detail .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:54px}
.detail h2{font-size:1.5rem;margin-bottom:18px}
.lst{list-style:none;display:grid;gap:12px}
.lst li{display:flex;gap:12px;align-items:flex-start}
.lst li svg{width:22px;height:22px;flex:none;margin-top:3px;color:var(--warm)}
.steps{list-style:none;display:grid;gap:16px;counter-reset:s}
.steps li{position:relative;padding-left:50px;counter-increment:s}
.steps li::before{content:counter(s);position:absolute;left:0;top:-2px;width:34px;height:34px;border-radius:50%;background:var(--blue-soft);color:var(--blue-deep);font-weight:800;display:flex;align-items:center;justify-content:center}
.steps b{display:block}.steps span{color:var(--grey);font-size:.95rem}

/* CTA band */
.ctaband{background:var(--bg-soft);border-top:1px solid var(--line);text-align:center;padding:56px 24px}
.ctaband h2{font-size:1.6rem;margin-bottom:10px}
.ctaband p{color:var(--grey);margin-bottom:22px}

/* Kontakt */
.contact{background:var(--blue-deep);color:#fff}
.contact .wrap{display:grid;grid-template-columns:1fr 1fr;gap:54px;padding:80px 24px}
.contact h2{font-size:clamp(1.8rem,3.4vw,2.3rem);color:#fff}
.contact .eyebrow{color:var(--warm-2)}
.contact .info{margin-top:22px;display:grid;gap:16px}
.contact .info div{display:flex;gap:14px;align-items:flex-start}
.contact .info svg{width:22px;height:22px;flex:none;margin-top:3px;color:var(--warm-2)}
.contact .info b{display:block}.contact .info span{color:#BFD7EC}
.form{background:#fff;border-radius:var(--radius);padding:30px;color:var(--ink)}
.form .r{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form label{display:block;font-size:.84rem;font-weight:700;margin:14px 0 6px}
.form input,.form textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:12px 14px;font:inherit;font-size:.95rem}
.form textarea{min-height:108px;resize:vertical}
.form .btn-warm{width:100%;justify-content:center;margin-top:20px}
.form small{color:var(--grey);font-size:.8rem;display:block;margin-top:10px}

/* Footer */
footer{background:var(--ink);color:#9AA6B2;padding:52px 24px 28px;font-size:.92rem}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;max-width:var(--maxw);margin:0 auto}
footer img{height:60px;width:60px;border-radius:50%;margin-bottom:14px}
footer h4{color:#fff;font-size:.92rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:14px}
footer a:hover{color:#fff} footer ul{list-style:none;display:grid;gap:9px}
.foot-base{max-width:var(--maxw);margin:34px auto 0;padding-top:22px;border-top:1px solid #3a4047;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.84rem}
.foot-credit{max-width:var(--maxw);margin:10px auto 0;text-align:center;font-size:.72rem;color:#5a6470}.foot-credit a{color:#5a6470;text-decoration:none;border-bottom:1px solid transparent;transition:color .2s,border-color .2s}.foot-credit a:hover{color:#9AA6B2;border-bottom-color:#9AA6B2}

@media(max-width:900px){
  .menu{display:none}.burger{display:inline-flex}
  .hero{height:auto;max-height:none;padding:48px 0}
  .worlds{grid-template-columns:1fr;gap:22px}
  .world.warm,.world.cool{align-items:center;text-align:center}
  .world.cool .elem{flex-direction:row}
  .world p{max-width:36ch}
  .seal img{width:104px;height:104px}
  .about .wrap,.contact .wrap,.detail .wrap{grid-template-columns:1fr;gap:34px}
  .saeulen .row{grid-template-columns:1fr 1fr;gap:24px 0}
  .saeulen .s{border-left:none;padding:6px 0}
  .foot{grid-template-columns:1fr 1fr}
}
/* Leistungen — Aufklapp (Accordion) */
.acc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;position:relative;overflow:hidden;transition:.18s}
.acc::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;z-index:1}
.acc.warm::before{background:linear-gradient(var(--warm),var(--warm-2))}
.acc.cool::before{background:linear-gradient(#0B6BB8,#6FC2F5)}
.acc.dark::before{background:linear-gradient(#3a4047,#62707d)}
.acc[open]{box-shadow:0 12px 30px rgba(11,79,138,.10);border-color:transparent}
.acc summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:84px 1fr auto;align-items:center;gap:28px;padding:24px 26px;transition:.15s}
.acc summary::-webkit-details-marker{display:none}
.acc summary:hover{background:var(--bg-soft)}
.acc .idx{font-size:2.1rem;font-weight:800;color:var(--blue-soft);line-height:1}
.acc.warm .idx{color:#FBDFCB}
.acc .body .k{font-size:.72rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--grey)}
.acc.warm .body .k{color:var(--warm)} .acc.cool .body .k{color:var(--blue)}
.acc .body h3{font-size:1.28rem;margin:3px 0} .acc summary .body p{color:var(--grey);font-size:.96rem}
.acc .chev{width:36px;height:36px;border-radius:50%;border:2px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:1.5rem;line-height:1;color:var(--blue-deep);transition:.2s}
.acc[open] .chev{transform:rotate(45deg);border-color:var(--warm);color:var(--warm)}
.acc-body{padding:6px 26px 28px 26px;border-top:1px solid var(--line)}
.acc-body .lst{margin:16px 0 20px}
.acc-body .btn{justify-self:start}

@media(max-width:560px){
  .reihe{grid-template-columns:1fr;gap:10px}.reihe .idx{display:none}
  .acc summary{grid-template-columns:1fr;gap:8px}.acc .idx,.acc .chev{display:none}
  .form .r{grid-template-columns:1fr}.foot{grid-template-columns:1fr}
}