:root{
  --navy:#0A1D37;
  --blue:#1D4ED8;
  --red:#E30613;
  --light:#F2F4F7;
  --text:#333B44;
  --muted:#667085;
  --line:#E4E7EC;
  --white:#FFFFFF;
  --soft-blue:#EFF6FF;
  --soft-red:#FFF4F4;
  --shadow:0 18px 48px rgba(10,29,55,.08);
  --radius:18px;
  --content:1320px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--text);
  background:#fff;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--navy)}
img,svg{max-width:100%}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Header */
.bw-legacy-site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.bw-legacy-header-inner{
  width:min(calc(100% - 40px),var(--content));
  min-height:74px;margin:auto;
  display:flex;align-items:center;justify-content:space-between;gap:26px;
}
.bw-legacy-brand{display:flex;align-items:center;gap:11px;color:var(--navy);text-decoration:none;min-width:max-content}
.bw-legacy-brand-mark{width:38px;height:38px;display:block}
.bw-legacy-brand-name{font-weight:750;letter-spacing:-.035em;font-size:1.16rem}
.bw-legacy-brand-name b{font-weight:850}
.bw-legacy-desktop-nav{display:flex;align-items:center;gap:26px;font-size:.94rem}
.bw-legacy-desktop-nav a{color:var(--text);text-decoration:none;font-weight:600}
.bw-legacy-desktop-nav a[aria-current="page"]{color:var(--blue)}
.bw-legacy-header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 16px;border-radius:10px;background:var(--navy);
  color:#fff!important;font-weight:750!important;
}
.bw-legacy-mobile-menu{display:none;position:relative}
.bw-legacy-mobile-menu summary{list-style:none;cursor:pointer;border:1px solid var(--line);border-radius:10px;padding:8px 11px;font-weight:700}
.bw-legacy-mobile-menu summary::-webkit-details-marker{display:none}
.bw-legacy-mobile-menu nav{
  position:absolute;right:0;top:48px;min-width:220px;padding:12px;
  display:grid;gap:4px;background:white;border:1px solid var(--line);
  border-radius:14px;box-shadow:var(--shadow);
}
.bw-legacy-mobile-menu nav a{padding:9px 10px;text-decoration:none;color:var(--text);font-weight:650;border-radius:8px}
.bw-legacy-mobile-menu nav a:hover{background:var(--light)}

/* Article header */
.article-hero{
  background:
    radial-gradient(circle at 92% 10%, rgba(29,78,216,.09), transparent 28%),
    linear-gradient(180deg,#fff 0%,#f8fafc 100%);
  border-bottom:1px solid var(--line);
}
.hero-inner{width:min(calc(100% - 40px),var(--content));margin:auto;padding:44px 0 52px}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;align-items:center;color:var(--muted);font-size:.84rem;margin-bottom:26px}
.breadcrumbs a{color:var(--muted);text-decoration:none}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:.82rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;margin-bottom:12px}
.eyebrow:before{content:"";width:26px;height:3px;background:var(--red);border-radius:99px}
h1,h2,h3{color:var(--navy);line-height:1.18;letter-spacing:-.025em}
h1{font-size:clamp(2.15rem,5vw,4rem);max-width:900px;margin:0 0 18px}
.hero-lead{max-width:820px;font-size:clamp(1.05rem,2vw,1.22rem);color:#475467;margin:0}
.article-meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px;color:var(--muted);font-size:.84rem}
.article-meta span{display:inline-flex;align-items:center;gap:6px}

/* Layout */
.page-grid{
  width:min(calc(100% - 48px),var(--content));margin:0 auto;
  display:block;
  padding:54px 0 72px;
}
.article{max-width:1100px;margin:0 auto}
.article p{margin:0 0 20px}
.article h2{font-size:1.72rem;margin:46px 0 16px}
.article h3{font-size:1.15rem;margin:30px 0 10px}
.article ul{padding-left:1.25rem;margin:12px 0 24px}
.article li{margin:6px 0}
.article strong{color:#202937}
.article blockquote{
  margin:22px 0;padding:18px 20px;border-left:4px solid var(--blue);
  background:var(--soft-blue);border-radius:0 12px 12px 0;color:#344054;
}
.answer-box{
  margin:0 0 32px;padding:22px 24px;background:var(--navy);color:#fff;border-radius:16px;
}
.answer-box strong{color:#fff;font-size:1.06rem}
.answer-box p{margin:5px 0 0;color:#e9eef6}
.pilot-tip{
  margin:28px 0;padding:20px 22px;border:1px solid #cfe0ff;
  border-radius:15px;background:linear-gradient(135deg,#f7faff,#eef5ff);
}
.pilot-tip strong{display:block;color:var(--blue);font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px}
.pilot-tip p{margin:0}
.note{
  margin:28px 0;padding:18px 20px;border-left:4px solid var(--red);background:var(--soft-red);border-radius:0 12px 12px 0
}
.example{
  margin:18px 0 26px;padding:18px 20px;background:var(--light);border-radius:12px;font-size:.96rem
}
.clean-table{width:100%;border-collapse:collapse;margin:22px 0 28px;font-size:.94rem}
.clean-table th,.clean-table td{padding:13px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.clean-table th{background:var(--light);color:var(--navy);font-weight:750}
.source-box{margin-top:52px;padding-top:28px;border-top:1px solid var(--line)}
.source-box h2{font-size:1.16rem;margin:0 0 12px}
.source-box p,.source-box li{font-size:.9rem;color:var(--muted)}
.source-box ul{margin:0;padding-left:1.15rem}

/* Zusatznavigation unter dem Artikel statt einer dauerhaft leeren rechten Spalte. */
.sidebar{max-width:1100px;margin:36px auto 0}
.sidebar-inner{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.toc,.related{
  border:1px solid var(--line);border-radius:16px;background:white;padding:20px;
}
.toc h2,.related h2{font-size:.95rem;margin:0 0 12px;letter-spacing:0}
.toc ol{margin:0;padding-left:1.1rem}
.toc li{margin:7px 0;color:var(--muted);font-size:.88rem}
.toc a{color:var(--muted);text-decoration:none}
.toc a:hover{color:var(--blue)}
.related{margin-top:0}
.related a{display:block;padding:8px 0;border-bottom:1px solid var(--line);text-decoration:none;font-weight:650;font-size:.9rem}
.related a:last-child{border-bottom:0}

/* CTA + Footer */
.article-cta{
  margin-top:48px;padding:28px;border-radius:18px;
  background:linear-gradient(135deg,var(--navy),#102a50);color:white;
}
.article-cta h2{color:white;margin:0 0 8px;font-size:1.45rem}
.article-cta p{color:#d8e1ec;margin:0 0 18px}
.article-cta a{display:inline-flex;padding:11px 16px;background:white;color:var(--navy);text-decoration:none;border-radius:10px;font-weight:800}
.bw-legacy-site-footer{background:#071326;color:white}
.bw-legacy-footer-inner{
  width:min(calc(100% - 40px),var(--content));margin:auto;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:30px 0;
}
.bw-legacy-footer-brand{display:flex;align-items:center;gap:10px;font-weight:750}
.bw-legacy-footer-brand .bw-legacy-brand-mark{width:30px;height:30px}
.bw-legacy-footer-links{display:flex;flex-wrap:wrap;gap:18px}
.bw-legacy-footer-links a{color:#d7dfeb;text-decoration:none;font-size:.88rem}
.bw-legacy-footer-copy{color:#98a2b3;font-size:.8rem;margin-top:4px}

/* Responsive */
@media (max-width:900px){
  .bw-legacy-desktop-nav{display:none}.bw-legacy-mobile-menu{display:block}
  .page-grid{gap:34px}
  .article{max-width:none}
  .sidebar-inner{grid-template-columns:1fr}
}
@media (max-width:640px){
  .bw-legacy-header-inner,.hero-inner,.page-grid,.bw-legacy-footer-inner{width:min(calc(100% - 28px),var(--content))}
  .hero-inner{padding:34px 0 40px}
  .page-grid{padding:38px 0 54px}
  h1{font-size:2.35rem}
  .article h2{font-size:1.48rem;margin-top:38px}
  .answer-box,.pilot-tip,.article-cta{padding:19px}
  .bw-legacy-footer-inner{align-items:flex-start;flex-direction:column}
  .clean-table{display:block;overflow-x:auto;white-space:nowrap}
}
@media print{
  .bw-legacy-site-header,.sidebar,.article-cta,.bw-legacy-site-footer{display:none!important}
  .page-grid{display:block;width:100%;padding:0}
  .article{max-width:none}
  a{color:inherit;text-decoration:none}
}

.knowledge-hero{border-bottom:1px solid var(--line);background:radial-gradient(circle at 90% 12%,rgba(29,78,216,.10),transparent 30%),radial-gradient(circle at 8% 6%,rgba(227,6,19,.055),transparent 23%),linear-gradient(180deg,#fff 0%,#f8fafc 100%)}
.knowledge-hero .hero-inner{padding:52px 0 58px}.knowledge-hero h1{max-width:920px}
.knowledge-intro,.knowledge-grid{width:min(calc(100% - 40px),var(--content));margin:0 auto}
.knowledge-intro{padding:42px 0 18px}.knowledge-intro p{max-width:790px;color:var(--muted);font-size:1.02rem}
.knowledge-grid{padding:8px 0 70px}
.category-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.category-card{border:1px solid var(--line);border-radius:20px;background:#fff;padding:24px;box-shadow:0 12px 34px rgba(10,29,55,.055)}
.category-card h2{font-size:1.35rem;margin:0 0 8px}.category-card>p{margin:0 0 16px;color:var(--muted);font-size:.94rem}
.category-card nav{display:grid;gap:4px}.category-card nav a{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:10px 0;border-bottom:1px solid var(--line);color:var(--text);text-decoration:none;font-weight:650;font-size:.92rem}
.category-card nav a:last-child{border-bottom:0}.category-card nav a::after{content:"→";color:var(--blue);font-weight:850}.category-card nav a:hover{color:var(--blue)}
.feature-row{display:grid;grid-template-columns:1.25fr .75fr;gap:20px;margin:20px 0 34px}
.feature-card{border-radius:22px;padding:28px;min-height:230px;display:flex;flex-direction:column;justify-content:space-between}
.feature-card h2{margin:0 0 10px;font-size:1.7rem}.feature-card p{margin:0;max-width:610px}.feature-card a{display:inline-flex;width:max-content;margin-top:22px;padding:11px 16px;border-radius:10px;text-decoration:none;font-weight:850}
.feature-card.apprentice{background:linear-gradient(135deg,#0A1D37,#17385f);color:#fff}.feature-card.apprentice h2{color:#fff}.feature-card.apprentice p{color:#dce5ef}.feature-card.apprentice a{background:#fff;color:var(--navy)}
.feature-card.pdf{background:linear-gradient(135deg,#eef5ff,#f7faff);border:1px solid #cfddf7}.feature-card.pdf a{background:var(--blue);color:#fff}
.topic-chip-row{display:flex;flex-wrap:wrap;gap:10px;margin:12px 0 34px}.topic-chip-row a{display:inline-flex;padding:9px 12px;border:1px solid var(--line);border-radius:999px;text-decoration:none;color:var(--text);font-size:.86rem;font-weight:700;background:#fff}
.topic-chip-row a:hover{border-color:#bfcce0;color:var(--blue)}
.knowledge-footer-cta{margin:28px 0 0;padding:30px;border-radius:20px;background:var(--navy);color:#fff}.knowledge-footer-cta h2{color:#fff;margin:0 0 8px}.knowledge-footer-cta p{color:#dce5ef;margin:0 0 18px;max-width:760px}.knowledge-footer-cta a{display:inline-flex;padding:11px 16px;background:#fff;color:var(--navy);text-decoration:none;border-radius:10px;font-weight:850}
@media(max-width:900px){.category-grid,.feature-row{grid-template-columns:1fr}}
@media(max-width:640px){.knowledge-intro,.knowledge-grid{width:min(calc(100% - 28px),var(--content))}.knowledge-hero .hero-inner{padding:38px 0 44px}.feature-card,.category-card{padding:20px}}