:root{
  --petrol:#024554;
  --petrol-d:#01323d;
  --teal:#148368;
  --sage:#6a8c69;
  --olive:#a8b545;
  --sand:#c2c0a6;
  --blue:#07a1e2;
  --ink:#0c1915;
  --ink-soft:rgba(12,25,21,.72);
  --cream:#f4f5f0;
  --line:#e3e6e2;
  --white:#fff;
  --container:1180px;
  --radius:12px;
  --shadow:0 12px 32px rgba(2,69,84,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--white);
  font-family:-apple-system,system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
h1,h2,h3,h4{line-height:1.18;margin:0 0 .5em;font-weight:700;color:var(--petrol)}
h1{font-size:clamp(2rem,4vw,3rem)}
h2{font-size:clamp(1.6rem,2.8vw,2.3rem)}
h3{font-size:1.2rem}
.lead{font-size:1.06rem;color:var(--ink-soft)}
.section{padding:78px 0}
.section--petrol{background:var(--petrol);color:#fff}
.section--petrol h2,.section--petrol h3{color:#fff}
.section--petrol .lead{color:rgba(255,255,255,.82)}
.section--cream{background:var(--cream)}
.section__head{max-width:840px;margin:0 auto 46px}
.section__head.center{text-align:center}
.eyebrow{display:inline-block;font-weight:700;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--teal);margin-bottom:12px}
.btn{display:inline-flex;align-items:center;gap:.5em;background:var(--teal);color:#fff;font-weight:700;
  padding:14px 28px;border-radius:8px;line-height:1.25;border:0;cursor:pointer;transition:background .2s,transform .2s}
.btn:hover{background:#0f6b54;transform:translateY(-1px)}
.btn--light{background:#fff;color:var(--petrol)}
.btn--light:hover{background:#eef3f2}
.btn--ghost{background:transparent;border:1.5px solid rgba(255,255,255,.6);color:#fff}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.site-header .container{display:flex;align-items:center;gap:18px;min-height:74px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.1rem;color:var(--petrol);letter-spacing:-.01em;white-space:nowrap;flex:none}
.logo .tri{width:0;height:0;border-left:11px solid transparent;border-right:11px solid transparent;border-bottom:19px solid var(--olive)}
.logo-img{height:42px;width:auto;display:block}
.header-right .ig{display:inline-flex;align-items:center;color:var(--petrol);margin-left:2px}
.header-right .ig svg{width:21px;height:21px;display:block}
.header-right .ig:hover{color:var(--teal)}
.mobile-nav .nav-br{display:none}
.nav{display:flex;gap:18px;margin-left:14px;align-items:center}
.nav a{font-weight:600;font-size:.9rem;color:var(--ink);white-space:nowrap;text-align:center;line-height:1.25}
.nav a:hover,.nav a.active{color:var(--teal)}
.header-right{display:flex;align-items:center;gap:14px;margin-left:auto;font-size:.85rem}
.header-right a{font-weight:700;color:var(--petrol);white-space:nowrap}
.header-right .contact{display:flex;flex-direction:column;align-items:flex-end;gap:1px;line-height:1.3}
.burger{display:none;background:none;border:0;cursor:pointer;margin-left:auto;padding:8px}
.burger span{display:block;width:26px;height:2px;background:var(--petrol);margin:5px 0}
.mobile-nav{display:none;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:12px 24px 20px}
.mobile-nav.open{display:flex}
.mobile-nav a{padding:11px 0;border-bottom:1px solid var(--line);font-weight:600}

/* Hero */
.hero{position:relative;color:#fff;display:flex;align-items:center;min-height:520px;overflow:hidden;background-size:cover;background-position:center}
.hero::before{content:"";position:absolute;inset:0;z-index:0;background:linear-gradient(120deg,rgba(2,69,84,.82),rgba(2,69,84,.45))}
.hero .container{position:relative;z-index:1;padding-top:64px;padding-bottom:64px}
.hero .eyebrow{color:var(--olive)}
.hero h1{color:#fff;max-width:780px}
.hero p{color:rgba(255,255,255,.92);max-width:640px;font-size:1.1rem;margin:0 0 26px}
.hero--sm{min-height:380px}

/* Leistungs-Karten (4, farbig) */
.portfolio{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;align-items:stretch}
.pcard{border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;height:100%;color:#fff}
.pcard img{width:100%;aspect-ratio:16/10;object-fit:cover}
.pcard .body{padding:22px;display:flex;flex-direction:column;flex:1}
.pcard--1{background:var(--teal)}.pcard--2{background:var(--sage)}.pcard--3{background:var(--olive);color:var(--ink)}.pcard--4{background:var(--sand);color:var(--ink)}
.pcard h3{color:inherit;font-size:1.05rem}
.pcard .body p{font-size:.92rem;margin:0 0 4px}
.pcard ul{list-style:none;padding:0;margin:10px 0 16px;display:grid;gap:6px;font-size:.9rem;opacity:.92}
.pcard ul li{position:relative;padding-left:18px}
.pcard ul li::before{content:"›";position:absolute;left:0;font-weight:800}
.pcard .more{margin-top:auto;font-weight:700;font-size:.9rem;display:inline-flex;align-items:center;gap:6px}

/* Split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.split img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%}
.split--rev .media{order:2}
.ticks{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:9px}
.ticks li{position:relative;padding-left:26px}
.ticks li::before{content:"";position:absolute;left:0;top:8px;width:14px;height:14px;border-radius:3px;background:var(--teal)}
.section--petrol .ticks li::before{background:var(--olive)}

/* Pillars (3) */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pillar{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);padding:28px}
.pillar h3{color:#fff}.pillar p{color:rgba(255,255,255,.82);font-size:.95rem;margin:0}

/* Branchen chips */
.chips{display:flex;flex-wrap:wrap;gap:12px}
.chips.center{justify-content:center}
.chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:10px 18px;font-size:.92rem;font-weight:600;color:var(--petrol)}

/* Cards generic */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.cards.cols-2{grid-template-columns:repeat(2,1fr)}.cards.cols-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;height:100%;box-shadow:var(--shadow)}
.card h3{font-size:1.05rem}.card p{color:var(--ink-soft);font-size:.93rem;margin:0}

/* FAQ */
.faq{max-width:900px;margin:0 auto}
.faq details{border:1px solid rgba(255,255,255,.18);border-radius:8px;margin-bottom:12px;background:rgba(255,255,255,.05)}
.section--petrol .faq summary{color:#fff}
.faq summary{cursor:pointer;padding:18px 22px;font-weight:700;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--olive);font-size:1.3rem}
.faq details[open] summary::after{content:"–"}
.faq p{padding:0 22px 18px;margin:0;font-size:.95rem;color:rgba(255,255,255,.8)}

/* Form */
.form{max-width:640px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);display:grid;gap:15px}
.form label{font-weight:700;font-size:.88rem;margin-bottom:-8px;color:var(--petrol)}
.form input,.form textarea,.form select{width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:9px;font:inherit;background:#fff}
.form textarea{min-height:120px;resize:vertical}
.form .consent{display:flex;gap:9px;align-items:flex-start;font-size:.82rem;color:var(--ink-soft);font-weight:400}
.form .consent input{width:auto;margin-top:3px}
.infobox{background:#f0f6f4;border:1px solid var(--line);border-radius:10px;padding:22px 24px}
.infobox h3{margin:0 0 10px}

/* Legal */
.legal{padding:60px 0;max-width:840px}
.legal h1{font-size:2rem}.legal h2{font-size:1.2rem;margin-top:1.5em}
.legal p,.legal li{color:var(--ink-soft);font-size:.98rem}

/* Blog */
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.post{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.post img{width:100%;aspect-ratio:16/10;object-fit:cover}
.post .body{padding:22px 24px;display:flex;flex-direction:column;flex:1}
.post h3{font-size:1.1rem;margin:0 0 10px}
.post p{color:var(--ink-soft);font-size:.95rem;margin:0 0 16px}
.post .more{margin-top:auto;font-weight:700;color:var(--teal)}
.article{max-width:760px;margin:0 auto}
.article .lead{font-size:1.12rem;color:var(--ink);margin:0 0 1.1em}
.article h2{font-size:1.4rem;color:var(--petrol);margin:1.5em 0 .45em}
.article p{margin:0 0 1em;color:var(--ink-soft);line-height:1.7}
.article ul{margin:0 0 1.2em 1.2em;color:var(--ink-soft);display:grid;gap:6px;line-height:1.5}

/* Slider */
.slider{position:relative;height:100%}
.slides{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none;height:100%}
.slides::-webkit-scrollbar{display:none}
.slides img{flex:0 0 100%;width:100%;height:100%;min-height:340px;object-fit:cover;scroll-snap-align:center;display:block}
.slider-btn{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border-radius:50%;border:0;background:rgba(2,69,84,.78);color:#fff;font-size:1.5rem;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}
.slider-btn:hover{background:var(--petrol)}
.slider-prev{left:12px}.slider-next{right:12px}
.slider-dots{position:absolute;bottom:12px;left:0;right:0;display:flex;gap:7px;justify-content:center}
.slider-dots span{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.55)}
.slider-dots span.on{background:#fff}
/* Feature (großer Blog-Artikel) */
.feature{display:grid;grid-template-columns:1.25fr 1fr;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);margin-bottom:34px}
.feature-text{padding:36px 40px;display:flex;flex-direction:column;justify-content:center}
.feature-text h2{margin:.1em 0 .4em}
.feature-text p{color:var(--ink-soft);margin:0 0 22px}
.feature-text .btn{align-self:flex-start}
.article .slider{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);margin:0 0 28px}
.article .slides img{max-height:460px}
/* Siemens-Inline (Blog-Feature) */
.si{display:grid;grid-template-columns:60% 1fr;gap:38px;align-items:center;margin-bottom:8px}
.si .slider{height:400px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.si-text h2{margin:.1em 0 .5em}
.si-text h3{color:var(--petrol);margin:1em 0 .3em;font-size:1.1rem}
.si-text p{color:var(--ink-soft);margin:0 0 1em}
.si-text .btn{margin-top:8px}
@media(max-width:900px){.si{grid-template-columns:1fr}.si .slider{height:300px;order:-1}}
@media(max-width:980px){.feature{grid-template-columns:1fr}.feature-text{padding:26px 24px}}

/* Footer */
.site-footer{background:var(--petrol-d);color:rgba(255,255,255,.78);padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px}
.site-footer h4{color:#fff;font-size:1rem;margin:0 0 12px}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:9px;font-size:.94rem}
.site-footer a:hover{color:#fff}
.site-footer address{font-style:normal;font-size:.94rem;line-height:1.8}
.footer-bottom{margin-top:42px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);font-size:.85rem;opacity:.75;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

@media(max-width:1080px){.nav,.header-right{display:none}.burger{display:block}}
@media(max-width:980px){
  .nav,.header-right{display:none}.burger{display:block}
  .split{grid-template-columns:1fr;gap:30px}.split--rev .media{order:0}
  .portfolio{grid-template-columns:1fr 1fr}.pillars,.cards,.cards.cols-4,.posts{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .section{padding:52px 0}
  .portfolio,.cards.cols-2,.footer-grid{grid-template-columns:1fr}
}