:root{
  --bg:#ffffff;
  --surface:#f5f5f5;
  --fg:#303030;
  --muted:#8c8c8c;
  --border:#dbdbdb;
  --accent:#289b95;
  --accent-2:#004f4c;
  --footer:#2b2b2b;
  --footer-2:#161616;
  --grad:linear-gradient(130deg,#289b95 0%,#004f4c 100%);
  --radius:8px;
  --maxw:1180px;
  --font-display:"Roboto",system-ui,-apple-system,"Segoe UI","Helvetica Neue",Arial,sans-serif;
  --font-body:"Libre Franklin",system-ui,-apple-system,"Segoe UI","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  font-weight:400;
  color:var(--fg);
  background:var(--bg);
  line-height:1.7;
  font-size:18px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,.nav,.eyebrow{font-family:var(--font-display);font-weight:700;line-height:1.2;color:var(--fg)}
h1{font-size:clamp(2.2rem,4.5vw,3.6rem);letter-spacing:-.01em}
h2{font-size:clamp(1.8rem,3.2vw,2.6rem);margin-bottom:.6em}
h3{font-size:clamp(1.25rem,2vw,1.6rem);margin-bottom:.4em}
p{margin-bottom:1.1em;max-width:72ch}
a{color:var(--accent-2);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{color:var(--accent);font-size:.85rem;letter-spacing:.12em;text-transform:uppercase;font-weight:700;margin-bottom:.6em;display:block}
.lead{font-size:1.25rem;color:var(--fg);max-width:60ch}
.muted{color:var(--muted)}

/* HEADER / NAV */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:74px;gap:24px}
.brand-logo img{height:46px;width:auto}
.nav{display:flex;gap:6px;align-items:center;font-family:var(--font-body);font-weight:600;font-size:.97rem}
.nav a{color:var(--fg);padding:8px 12px;border-radius:var(--radius);transition:background .15s,color .15s}
.nav a:hover{background:var(--surface);color:var(--accent-2);text-decoration:none}
.nav a.active{color:var(--accent)}
.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:var(--radius);padding:8px 12px;cursor:pointer;font-size:1.4rem;color:var(--fg)}
.btn{display:inline-flex;align-items:center;gap:.5em;font-family:var(--font-display);font-weight:700;font-size:1rem;padding:14px 26px;border-radius:var(--radius);border:none;cursor:pointer;transition:transform .12s,box-shadow .15s}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 20px rgba(0,79,76,.22)}
.btn-primary:hover{transform:translateY(-2px);text-decoration:none;box-shadow:0 10px 28px rgba(0,79,76,.3)}
.btn-ghost{background:var(--surface);color:var(--accent-2)}
.btn-ghost:hover{background:#ededed;text-decoration:none}

/* SECTIONS */
section{padding:84px 0}
.section-surface{background:var(--surface)}
.section-dark{background:var(--footer-2);color:#c4c4c4}
.section-dark h2,.section-dark h3{color:#fff}
.section-dark p{color:#c4c4c4}
.section-grad{background:var(--grad);color:#fff}
.section-grad h2,.section-grad h3{color:#fff}
.section-grad p{color:rgba(255,255,255,.9)}
.grid{display:grid;gap:28px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

/* HERO */
.hero{position:relative;color:#fff;overflow:hidden;padding:0}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:saturate(.9) brightness(.55)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(130deg,rgba(0,79,76,.88),rgba(40,155,149,.55))}
.hero-inner{position:relative;z-index:2;padding:120px 0 110px;max-width:760px}
.hero h1{color:#fff}
.hero .lead{color:rgba(255,255,255,.92)}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.badge-iso{display:inline-flex;align-items:center;gap:.5em;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);padding:8px 16px;border-radius:99px;font-size:.9rem;font-weight:600;margin-bottom:22px}

/* CARDS */
.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(0,0,0,.07)}
.card .icon{width:48px;height:48px;border-radius:var(--radius);background:var(--surface);display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--accent);font-weight:700;font-family:var(--font-display)}
.card h3{margin-bottom:.4em}
.card p{font-size:1rem;margin-bottom:0;color:var(--muted)}
.card-link{color:var(--accent-2);font-weight:600;margin-top:14px;display:inline-block}

/* ACCORDION */
.accordion{border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);overflow:hidden}
.acc-item{border-bottom:1px solid var(--border)}
.acc-item:last-child{border-bottom:none}
.acc-trigger{width:100%;text-align:left;background:none;border:none;cursor:pointer;padding:22px 26px;font-family:var(--font-display);font-weight:700;font-size:1.12rem;color:var(--fg);display:flex;justify-content:space-between;align-items:center;gap:16px}
.acc-trigger:hover{color:var(--accent-2)}
.acc-icon{flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--surface);color:var(--accent);display:flex;align-items:center;justify-content:center;transition:transform .25s,background .2s;font-size:1.1rem}
.acc-item.open .acc-icon{transform:rotate(45deg);background:var(--grad);color:#fff}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .35s ease}
.acc-panel-inner{padding:0 26px 24px;color:var(--fg)}
.acc-panel-inner p{color:var(--fg);margin-bottom:.8em}
.acc-panel-inner ul{margin:0 0 1em 1.2em;color:var(--fg)}
.acc-panel-inner li{margin-bottom:.4em}

/* BEFORE/AFTER SLIDER */
.ba{position:relative;width:100%;aspect-ratio:3/2;overflow:hidden;border-radius:var(--radius);border:1px solid var(--border);user-select:none;background:var(--surface)}
.ba img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;pointer-events:none}
.ba .after{clip-path:inset(0 0 0 50%)}
.ba .lbl{position:absolute;top:14px;z-index:4;background:rgba(0,0,0,.62);color:#fff;padding:5px 12px;border-radius:99px;font-size:.78rem;font-family:var(--font-display);font-weight:700;letter-spacing:.04em;pointer-events:none}
.ba .lbl-before{left:14px}
.ba .lbl-after{right:14px}
.ba-slider{position:absolute;top:0;bottom:0;left:50%;width:3px;background:#fff;z-index:5;transform:translateX(-50%);cursor:ew-resize;box-shadow:0 0 0 1px rgba(0,0,0,.15)}
.ba-handle{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:44px;height:44px;border-radius:50%;background:#fff;display:flex;align-items:center;justify-content:center;color:var(--accent-2);font-size:1.1rem;font-weight:700;box-shadow:0 4px 14px rgba(0,0,0,.3);pointer-events:none}
.ba-step{display:flex;gap:14px;align-items:flex-start;padding:18px 0;border-top:1px solid var(--border)}
.ba-step .n{flex:0 0 auto;width:38px;height:38px;border-radius:50%;background:var(--grad);color:#fff;font-family:var(--font-display);font-weight:700;display:flex;align-items:center;justify-content:center}

/* STATS */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
@media(max-width:780px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat .num{font-family:var(--font-display);font-weight:700;font-size:2.6rem;color:var(--accent);line-height:1}
.stat .lbl{font-size:.95rem;color:var(--muted);margin-top:.4em}

/* CTA BANNER */
.cta-box{background:var(--grad);border-radius:var(--radius);padding:54px;text-align:center;color:#fff}
.cta-box h2{color:#fff}
.cta-box .btn-primary{background:#fff;color:var(--accent-2)}

/* FOOTER */
.site-footer{background:var(--footer);color:#bdbdbd;padding:60px 0 30px}
.site-footer h4{color:#fff;font-family:var(--font-display);margin-bottom:14px;font-size:1.05rem}
.site-footer a{color:#bdbdbd;display:block;padding:5px 0}
.site-footer a:hover{color:#fff;text-decoration:none}
.footer-bottom{border-top:1px solid #3a3a3a;margin-top:40px;padding-top:22px;font-size:.85rem;color:#8a8a8a;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.footer-logo img{height:40px;filter:brightness(0) invert(1);opacity:.92}

/* BREADCRUMB */
.crumb{font-size:.9rem;color:var(--muted);padding:18px 0 0}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--accent-2)}

/* TOC */
.toc{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px 26px;margin-bottom:40px}
.toc h4{font-family:var(--font-display);margin-bottom:10px;font-size:1rem}
.toc a{display:block;padding:4px 0;color:var(--accent-2);font-size:.96rem}

/* PROSE for long SEO text */
.prose h2{margin-top:1.4em}
.prose h3{margin-top:1.2em}
.prose ul{margin:0 0 1.1em 1.3em}
.prose li{margin-bottom:.5em}
.divider{height:1px;background:var(--border);margin:48px 0}

/* MOBILE NAV */
@media(max-width:980px){
  .nav-toggle{display:block}
  .nav{position:absolute;top:74px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);flex-direction:column;align-items:stretch;padding:8px 24px 16px;gap:2px;display:none}
  .nav.open{display:flex}
  .nav a{padding:12px 8px}
}
@media(max-width:560px){
  section{padding:56px 0}
  .hero-inner{padding:84px 0 72px}
  .cta-box{padding:34px 22px}
  body{font-size:17px}
}

/* NAV DROPDOWN (entschlackt das Desktop-Menü) */
.nav-dropdown{position:relative}
.nav-drop-btn{display:inline-flex;align-items:center;gap:.35em;background:none;border:none;cursor:pointer;font-family:var(--font-body);font-weight:600;font-size:.97rem;color:var(--fg);padding:8px 12px;border-radius:var(--radius);transition:background .15s,color .15s}
.nav-drop-btn:hover{background:var(--surface);color:var(--accent-2)}
.nav-drop-btn .caret{font-size:.7em;transition:transform .2s;display:inline-block}
.nav-dropdown.open .nav-drop-btn .caret{transform:rotate(180deg)}
.nav-dropdown.open .nav-drop-btn{color:var(--accent)}
.nav-drop-menu{position:absolute;top:calc(100% + 6px);left:0;min-width:240px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 14px 34px rgba(0,0,0,.14);padding:6px;display:none;z-index:60;flex-direction:column}
.nav-dropdown.open .nav-drop-menu{display:flex}
.nav-drop-menu a{padding:10px 14px;border-radius:6px;color:var(--fg);font-size:.95rem;font-weight:600}
.nav-drop-menu a:hover{background:var(--surface);color:var(--accent-2);text-decoration:none}
.nav-drop-menu a.active{color:var(--accent)}
@media(min-width:981px){ .nav-dropdown:hover .nav-drop-menu{display:flex} }

/* READ-MORE (Texte erst auf Wunsch ausklappen) */
.read-more-btn{display:inline-flex;align-items:center;gap:.45em;margin-top:18px;background:none;border:1px solid var(--accent);color:var(--accent);font-family:var(--font-display);font-weight:700;font-size:.95rem;padding:11px 20px;border-radius:var(--radius);cursor:pointer;transition:background .15s,color .15s}
.read-more-btn:hover{background:var(--accent);color:#fff}
.read-more-btn .rm-caret{transition:transform .2s;display:inline-block}
.read-more-btn[aria-expanded="true"]{background:var(--accent);color:#fff}
.read-more-btn[aria-expanded="true"] .rm-caret{transform:rotate(180deg)}
.prose-more{display:none}
.prose-more.open{display:block;margin-top:1em}
.prose strong{color:var(--accent-2);font-weight:700}
.lead strong{color:var(--accent-2);font-weight:700}

@media(max-width:980px){
  .nav-dropdown{width:100%}
  .nav-drop-btn{width:100%;justify-content:space-between}
  .nav-drop-menu{position:static;box-shadow:none;border:none;padding:0 0 8px 8px;min-width:0}
  .nav-dropdown.open .nav-drop-menu{display:flex}
}