:root{--accent:#0077b8;--accent-2:#008b72;--ink:#142b3a;--muted:#5e707c;--line:#d8e1e5;--paper:#f5f7f8;--surface:#fff;--soft:#eaf1f4}
*{box-sizing:border-box}
html{color-scheme:light;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,Arial,sans-serif}
a{color:inherit;text-decoration:none}
header{height:82px;padding:0 max(5vw,28px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:#ffffffed;position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}
.brand.bv-brand{display:grid;grid-template-columns:auto;gap:1px;align-content:center;font-family:Inter,Arial,sans-serif}.bv-logo{position:relative;display:block;width:225px;aspect-ratio:5.9/1;overflow:hidden}.bv-logo img{position:absolute;width:107%;height:auto;left:-3.5%;top:-138%;max-width:none}.bv-brand>small{margin:0 0 0 2px;color:#738796;font:700 7px/1 Inter,Arial,sans-serif;letter-spacing:2.6px}
.page-actions{display:flex;align-items:center;gap:14px}.lang-switch{display:flex;border:1px solid var(--line);border-radius:7px;padding:2px}.lang-switch button{border:0;background:none;padding:6px 8px;border-radius:5px;color:var(--muted);font-size:9px;font-weight:800;cursor:pointer}.lang-switch button.active{background:var(--accent);color:#fff}.back{font-size:13px;font-weight:700;color:var(--accent)}.back:hover{text-decoration:underline}
main{width:min(1180px,calc(100% - 40px));margin:auto}
.crumbs{display:flex;gap:9px;padding:24px 0;color:var(--muted);font-size:12px}.crumbs a{color:var(--accent)}
.eyebrow{margin:0;color:var(--accent);font-size:10px;font-weight:800;letter-spacing:1.8px;text-transform:uppercase}
h1,h2{margin:0;font-family:'Space Grotesk',Inter,Arial,sans-serif;letter-spacing:0}
h1{max-width:850px;margin-top:14px;font-size:62px;line-height:1.03;overflow-wrap:anywhere}
h2{font-size:30px;line-height:1.2}
p{color:var(--muted);line-height:1.7}
.intro{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(280px,.55fr);gap:55px;align-items:start;padding:58px 0 68px;border-top:3px solid var(--accent)}
.lead{max-width:760px;margin:23px 0 0;font-size:19px;line-height:1.6;color:#405763}
.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:27px}.chips span{padding:7px 10px;border:1px solid #b7c8d0;border-radius:4px;color:#3f5865;font-size:11px;font-weight:700}
.intro aside{padding:22px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}
dl{margin:0}.intro dl div{display:flex;justify-content:space-between;gap:15px;padding:12px 0;border-bottom:1px solid var(--line)}
dt{color:var(--muted);font-size:11px}dd{margin:0;text-align:right;font-size:12px;font-weight:700}
.cta{display:block;margin-top:20px;padding:14px 18px;border-radius:6px;background:var(--accent);color:#fff;text-align:center;font-weight:750}.cta:hover{background:#005f94}
.text-link{display:block;margin-top:14px;color:var(--accent);font-size:12px;font-weight:700;text-align:center}.text-link:hover{text-decoration:underline}

.product-section{padding:64px 0;border-top:1px solid var(--line)}
.product-section h2{margin-top:10px}.product-section p{margin:17px 0 0}
.problem-solution{display:grid;grid-template-columns:1fr 1fr;gap:70px}.problem-solution>div:last-child{padding-left:28px;border-left:3px solid var(--accent-2)}
.section-heading{margin-bottom:28px}
.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:0 42px;margin:0;padding:0;list-style:none}
.feature-list li{position:relative;padding:12px 0 12px 27px;border-bottom:1px solid var(--line);color:#405763;font-size:14px;line-height:1.55}
.feature-list li:before{content:'✓';position:absolute;left:2px;color:var(--accent-2);font-weight:900}
.more-features{margin-top:22px}.more-features summary{width:max-content;max-width:100%;padding:10px 0;color:var(--accent);font-size:13px;font-weight:750;cursor:pointer}
.more-features[open] summary{margin-bottom:8px}
.application-compat{display:grid;grid-template-columns:1fr 1fr;gap:70px}
.application-list{display:flex;flex-wrap:wrap;gap:8px;margin:25px 0 0;padding:0;list-style:none}.application-list li{padding:9px 11px;border:1px solid var(--line);border-radius:4px;background:var(--surface);font-size:12px;font-weight:700}
.application-compat aside{padding-left:28px;border-left:3px solid var(--accent)}
.application-compat dl{margin-top:20px}.application-compat dl div{padding:12px 0;border-bottom:1px solid var(--line)}
.application-compat dd{margin-top:5px;text-align:left;line-height:1.5}.compat-note{font-size:12px}

.video{aspect-ratio:16/9;margin-bottom:22px;border:1px solid var(--line);background:#071725}.video iframe{display:block;width:100%;height:100%;border:0}
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.gallery a{display:block;border:1px solid var(--line);overflow:hidden;background:#fff}.gallery a:first-child{grid-column:1/-1}.gallery img{display:block;width:100%;height:auto;aspect-ratio:16/10;object-fit:contain}.gallery a:hover{border-color:var(--accent)}
.related-faq{display:grid;grid-template-columns:1fr 1fr;gap:70px}
.related-grid{display:grid;gap:9px;margin-top:23px}.related-grid a{display:grid;gap:5px;padding:16px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}.related-grid a:hover{border-color:var(--accent);transform:translateY(-2px)}
.related-grid span{color:var(--accent);font-size:9px;font-weight:800;text-transform:uppercase}.related-grid strong{font-size:15px}.related-grid small{color:var(--muted);font-size:11px;line-height:1.45}
.faq details{border-bottom:1px solid var(--line)}.faq summary{padding:17px 2px;font-size:13px;font-weight:750;line-height:1.4;cursor:pointer}.faq details p{margin:0;padding:0 2px 17px;font-size:12px}
.closing{display:grid;grid-template-columns:1fr 280px;gap:55px;align-items:center;margin:0 0 70px;padding:45px;background:var(--ink);color:#fff}.closing h2{margin-top:10px}.closing p{max-width:760px;margin:14px 0 0;color:#c9d5db}.closing .eyebrow{color:#5cd9be}.closing .cta{margin:0;background:#fff;color:var(--ink)}.closing .cta:hover{background:#dce8ec}
footer{display:flex;align-items:center;gap:40px;padding:35px max(5vw,28px);border-top:1px solid var(--line);background:var(--surface);color:var(--muted);font-size:11px}.footer-note{flex:1;text-align:center}.footer-legal,footer a{color:var(--accent)}footer .bv-logo{width:190px}

/* Kategorie- und Plattform-Uebersichtsseiten */
.intro.collection-intro{grid-template-columns:1fr;padding-bottom:52px}
.listing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:30px}
.listing-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:8px;background:var(--surface);overflow:hidden;transition:border-color .15s,transform .15s}
.listing-card:hover{border-color:var(--accent);transform:translateY(-2px)}
.listing-card>img{display:block;width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;background:var(--soft);border-bottom:1px solid var(--line)}
.listing-icon{display:flex;align-items:center;justify-content:center;aspect-ratio:16/10;border-bottom:1px solid var(--line);background:var(--soft);color:var(--accent);font:800 34px 'Space Grotesk',Inter,Arial,sans-serif}
.listing-body{display:flex;flex-direction:column;gap:6px;flex:1;padding:16px}
.listing-meta{color:var(--accent);font-size:9px;font-weight:800;letter-spacing:1.2px;text-transform:uppercase}
.listing-body strong{font-size:16px;line-height:1.3}
.listing-body small{color:var(--muted);font-size:11.5px;line-height:1.5}
.listing-price{margin-top:auto;padding-top:12px;font-size:13px;font-weight:750}
.collection-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:6px}
.collection-columns article{padding:22px;border:1px solid var(--line);border-radius:6px;background:var(--surface)}
.collection-columns h3{margin:0 0 10px;font:650 16px 'Space Grotesk',Inter,Arial,sans-serif}
.collection-columns p{margin:0;font-size:12.5px}
.collection-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px!important}
.collection-links a{padding:10px 14px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--accent);font-size:12px;font-weight:750}
.collection-links a:hover{border-color:var(--accent)}

@media(max-width:820px){
  .listing-grid,.collection-columns{grid-template-columns:1fr 1fr}
  main{width:min(100% - 28px,680px)}
  h1{font-size:46px}.intro{grid-template-columns:1fr;gap:28px;padding:42px 0 50px}
  .problem-solution,.application-compat,.related-faq{grid-template-columns:1fr;gap:38px}
  .problem-solution>div:last-child,.application-compat aside{padding-left:20px}
  .closing{grid-template-columns:1fr;gap:25px;padding:32px}.closing .cta{width:100%}
}
@media(max-width:560px){
  header{height:68px;padding:0 18px}.bv-logo{width:170px}.bv-brand>small{font-size:6px;letter-spacing:2px}.page-actions{gap:8px}.lang-switch button{padding:5px 6px}.back{font-size:11px}
  .crumbs{padding:18px 0}.crumbs span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  h1{font-size:38px}.lead{font-size:16px}.intro{padding-top:35px}
  .product-section{padding:48px 0}.product-section h2{font-size:25px}
  .feature-list{grid-template-columns:1fr}.gallery{grid-template-columns:1fr}.gallery a:first-child{grid-column:auto}
  .listing-grid,.collection-columns{grid-template-columns:1fr}.collection-links a{width:100%;text-align:center}
  .closing{margin-left:-14px;margin-right:-14px;margin-bottom:45px;padding:30px 20px}
  footer{flex-direction:column;text-align:center;gap:16px}footer .bv-logo{width:170px}.footer-note{text-align:center}
}