:root{
  --g:#15803d; --g-d:#166534; --ink:#0f172a; --paper:#f0fdf4; --line:#bbf7d0; --red:#dc2626; --mut:#475569; --w:#fff;
  --sans:"Source Sans 3","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --maxw:1120px; --dockh:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:400 17px/1.65 var(--sans);color:var(--ink);background:var(--w);
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:28px 28px;background-attachment:fixed;overflow-wrap:break-word}
body::before{content:"";position:fixed;inset:0;background:rgba(255,255,255,.82);z-index:-1}
img,svg{max-width:100%;height:auto}
a{color:var(--g-d);text-underline-offset:3px}
a:hover{color:var(--ink)}
:focus-visible{outline:3px solid var(--ink);outline-offset:2px;border-radius:4px}
p{font-size:17px;margin:0 0 1em}
.ic{width:22px;height:22px;display:block;flex:none}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;z-index:99}
.skip:focus{left:8px}

/* Kopf */
.top{background:var(--w);border-bottom:3px solid var(--g);position:sticky;top:0;z-index:30}
.top-in{max-width:var(--maxw);margin:0 auto;padding:10px 16px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.mark{width:38px;height:38px;border:2px solid var(--g);border-radius:6px;display:grid;place-items:center;background:var(--paper);position:relative;flex:none}
.mark::before{content:"";position:absolute;left:6px;top:0;bottom:0;border-left:2px solid var(--red);opacity:.7}
.mark b{font:700 20px/1 var(--mono);color:var(--g)}
.brand-t{font:700 22px/1 var(--sans);letter-spacing:-.01em}
.brand-t em{font-style:normal;color:var(--g)}
.nav-l{list-style:none;margin:0;padding:0;display:flex;gap:4px}
.nav-l a{display:block;padding:8px 14px;border-radius:6px;text-decoration:none;font-weight:600;color:var(--ink)}
.nav-l a:hover,.nav-l .current-menu-item a{background:var(--paper);color:var(--g-d)}

.main{min-height:60vh}
.wrap{max-width:var(--maxw);margin:0 auto;padding:28px 16px}

/* Hero + Heft */
.hero{background:var(--paper);border-bottom:2px solid var(--line)}
.hero-in{max-width:var(--maxw);margin:0 auto;padding:36px 16px 40px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:36px;align-items:start}
.eyebrow{font:600 14px/1 var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--g-d);margin:0 0 12px}
.hero h1,.pt{font:700 clamp(34px,5vw,52px)/1.08 var(--sans);letter-spacing:-.02em;margin:0 0 16px}
.pt{font-size:clamp(28px,4vw,40px)}
.lead{font-size:18px;color:#1e293b}

.box{background:var(--w);border:2px solid var(--g);border-radius:10px}
.heft{position:relative;overflow:hidden;box-shadow:6px 6px 0 var(--line)}
.calc{position:relative}
.calc::before{content:"";position:absolute;left:44px;top:0;bottom:0;border-left:2px solid var(--red);opacity:.45;pointer-events:none}
.modes{display:flex;border-bottom:2px solid var(--g);background:var(--paper);overflow-x:auto}
.modes button{flex:1 0 auto;min-height:48px;padding:10px 14px;border:0;border-right:1px solid var(--line);background:transparent;font:600 16px var(--sans);color:var(--ink);cursor:pointer}
.modes button[aria-selected=true]{background:var(--g);color:#fff}
.calc{padding:18px 18px 20px 62px}
.q{font-size:19px;margin:0 0 14px}
.q b{font-family:var(--mono);color:var(--g-d)}
.row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.fld{display:block;min-width:0}
.fld span{display:block;font-size:15px;font-weight:600;margin-bottom:4px;color:var(--mut)}
.fld input,.fb-f select,.fb-f textarea{width:100%;min-height:50px;padding:10px 12px;border:2px solid #94a3b8;border-radius:8px;font:500 20px var(--mono);color:var(--ink);background:#fff}
.fld input:focus,.fb-f select:focus,.fb-f textarea:focus{border-color:var(--g);outline:0;box-shadow:0 0 0 3px var(--line)}
.out{margin:18px 0 6px;padding:14px;border:2px dashed var(--g);border-radius:8px;background:var(--paper);display:flex;flex-direction:column;gap:2px;min-width:0}
.out-l{font-size:15px;font-weight:600;color:var(--g-d)}
.res{font:700 clamp(34px,6vw,48px)/1.1 var(--mono);color:var(--ink);overflow-wrap:anywhere}
.way{font:400 17px/1.6 var(--mono);color:var(--mut);margin:8px 0 14px;overflow-wrap:anywhere}
.acts{display:flex;flex-wrap:wrap;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:10px 20px;border:2px solid var(--g);border-radius:8px;background:var(--g);color:#fff;font:700 17px var(--sans);cursor:pointer;text-decoration:none}
.btn:hover{background:var(--g-d);color:#fff}
.btn.ghost{background:#fff;color:var(--g-d)}
.btn.ghost:hover{background:var(--paper);color:var(--ink)}
.btn .ic{width:20px;height:20px}
.acts .btn:first-child{flex:1 1 100%}
.acts .btn.ghost{flex:1 1 120px}

/* Inhaltsverzeichnis */
.sec{font:700 clamp(24px,3.4vw,32px)/1.2 var(--sans);margin:0 0 8px}
.sec-s{color:var(--mut)}
.toc-list{list-style:none;margin:16px 0 0;padding:0}
.toc-list>li+li{border-top:1px solid var(--line)}
.toc-list a,.toc-list .off{display:flex;align-items:baseline;gap:12px;padding:14px 16px;text-decoration:none;color:var(--ink);min-width:0}
.toc-list a:hover{background:var(--paper)}
.toc-list .off{color:#64748b}
.toc-list b{font:700 15px var(--mono);color:var(--g);flex:none}
.toc-list .tt{font-weight:700;min-width:0}
.toc-list small{display:block;font:400 15px/1.4 var(--sans);color:var(--mut);font-weight:400}
.toc-list .dots{flex:1 1 20px;border-bottom:2px dotted #94a3b8;min-width:16px;transform:translateY(-5px)}
.toc-list .dt{font:600 14px var(--mono);color:var(--g-d);flex:none;white-space:nowrap}
.pager{margin-top:20px}.pager .nav-links{display:flex;gap:8px;flex-wrap:wrap}.pager a,.pager span{padding:8px 14px;border:2px solid var(--g);border-radius:8px;text-decoration:none}

/* Fließtext */
.prose{max-width:780px;margin:0 auto}
.prose>*:first-child{margin-top:0}
.prose h2{font:700 clamp(25px,3.4vw,32px)/1.2 var(--sans);margin:2em 0 .6em;padding-bottom:6px;border-bottom:3px solid var(--g)}
.prose h3{font:700 22px/1.3 var(--sans);margin:1.6em 0 .5em;color:var(--g-d)}
.prose li{margin-bottom:.45em}
.prose code{font:500 15px var(--mono);background:var(--paper);border:1px solid var(--line);border-radius:4px;padding:1px 6px;white-space:normal;overflow-wrap:anywhere}
.tbl{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:1em 0;border:2px solid var(--g);border-radius:8px;max-width:100%}
.prose table{width:100%;border-collapse:collapse;font-size:16px;margin:0}
.prose th,.prose td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{background:var(--g);color:#fff;font-weight:600}
.prose tr:last-child td{border-bottom:0}
.prose tbody tr:nth-child(even){background:var(--paper)}
.note{padding:14px 16px;border-left:5px solid var(--g);background:var(--paper);border-radius:0 8px 8px 0}
.feat{border-radius:8px;margin:0 0 20px}
.crumb,.meta{font-size:17px;color:var(--mut);margin:0 0 8px}
.art{max-width:880px}
.err-n{font:700 clamp(72px,16vw,140px)/1 var(--mono);color:var(--g);margin:0}

.faq details{border:2px solid var(--g);border-radius:8px;margin:0 0 10px;background:#fff}
.faq summary{cursor:pointer;padding:14px 16px;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:12px;min-height:48px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:700 24px/1 var(--mono);color:var(--g)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0;padding:0 16px 16px}

/* Feedback */
.fb{margin:32px 0 0}
.fb-in{padding:22px}
.fb h2{margin:0 0 4px;font:700 24px/1.2 var(--sans)}
.fb-s{color:var(--mut)}
.fb-b{display:flex;flex-wrap:wrap;gap:10px}
.fb-f{margin-top:16px;display:grid;gap:8px}
.fb-f[hidden],.fb-ok[hidden]{display:none}
.fb-f label{font-weight:600;font-size:16px}
.fb-f select,.fb-f textarea{font:400 17px var(--sans)}
.hp{position:absolute;left:-9999px;opacity:0;height:0}
.fb-ok{margin:16px 0 0;font-weight:700;color:var(--g-d)}
.btn[aria-pressed=true]{background:var(--g);color:#fff}

/* Fuß */
.foot{margin-top:40px;background:var(--ink);color:#e2e8f0}
.foot-ruler{height:18px;background:var(--g);background-image:repeating-linear-gradient(90deg,#fff 0 2px,transparent 2px 10px),repeating-linear-gradient(90deg,#fff 0 2px,transparent 2px 50px);background-size:100% 8px,100% 14px;background-repeat:repeat-x;background-position:0 0}
.foot-in{max-width:var(--maxw);margin:0 auto;padding:28px 16px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
.foot p{font-size:17px;margin:0}
.foot-brand{display:flex;gap:12px}
.foot h2{font:600 14px var(--mono);text-transform:uppercase;letter-spacing:.08em;margin:0 0 10px;color:#86efac}
.foot ul{list-style:none;margin:0;padding:0}
.foot li{margin:0 0 6px}
.foot a{color:#fff}
.soon{color:#94a3b8}.soon i{font-style:normal;font-size:13px;border:1px solid #475569;border-radius:99px;padding:0 8px;margin-left:4px}
.foot-c{max-width:var(--maxw);margin:0 auto;padding:0 16px 24px;color:#94a3b8;font-size:17px!important}

/* Dock (nur Mobil) */
.dock,.sheet{display:none}
.sheet[open]{display:block}
.sheet{position:fixed;inset:auto 0 0 0;margin:0;width:100%;max-width:none;max-height:82vh;overflow:auto;border:0;border-top:3px solid var(--g);border-radius:18px 18px 0 0;padding:0;background:#fff;color:var(--ink);z-index:60}
.sheet::backdrop{background:rgba(15,23,42,.55)}
.sheet-h{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff}
.sheet-h button{width:44px;height:44px;border:0;background:var(--paper);border-radius:50%;display:grid;place-items:center;color:var(--ink);cursor:pointer}
.sheet-l{list-style:none;margin:0;padding:0 0 calc(12px + env(safe-area-inset-bottom))}
.sheet-l a,.sheet-l .off{display:flex;gap:12px;align-items:center;padding:12px 16px;text-decoration:none;color:var(--ink);min-height:56px}
.sheet-l li+li{border-top:1px solid var(--line)}
.sheet-l b{font:700 15px var(--mono);color:var(--g)}
.sheet-l small{display:block;color:var(--mut);font-size:14px}
.sheet-l .off{color:#64748b}

/* Vollbild-Vorlage */
.full-art{max-width:var(--maxw);margin:0 auto;padding:20px 16px}
.full-prose{max-width:none}
.kh-full .top{position:static}

@media(max-width:860px){
  .hero-in{grid-template-columns:minmax(0,1fr);gap:22px;padding:24px 0 0}
  .hero-t{display:contents}
  .hero-t .eyebrow,.hero-t h1{padding:0 14px;margin:0;order:1}
  .hero-t .eyebrow{padding-top:2px}
  .hero-in{display:flex;flex-direction:column;gap:14px}
  .heft{order:2;min-width:0;width:100%}
  .hero-in{width:100%}
  .hero-t .lead{order:3;padding:0 14px 24px;margin:6px 0 0}
  .foot-in{grid-template-columns:minmax(0,1fr)}
}
@media(max-width:640px){
  body{padding-bottom:calc(var(--dockh) + env(safe-area-inset-bottom))}
  .nav{display:none}
  .top-in{padding:8px 14px}
  /* Boxen randlos: kein Außen- und Innenabstand, Elemente bringen ihren eigenen mit */
  .wrap{padding-left:0;padding-right:0}
  .box{margin-left:0;margin-right:0;padding:0;border-radius:0;border-left:0;border-right:0}
  .heft{box-shadow:none}
  .calc::before{left:34px}
  .calc{padding:14px 12px 16px 46px}
  .row{grid-template-columns:minmax(0,1fr)}
  .toc-list a,.toc-list .off{padding:12px 12px}
  .toc-list .dots{display:none}
  .toc-list .dt{display:none}
  .sec,.sec-s,.prose,.crumb,.meta,.pt,.err-n,.art>p,.full-art>.pt{padding-left:14px;padding-right:14px}
  .tbl{border-left:0;border-right:0;border-radius:0}
  .prose th,.prose td{padding:8px 7px;font-size:16px}
  .fb{margin-top:24px}.fb-in{padding:16px 12px}
  .foot{margin-top:28px}
  .foot-in{padding:22px 14px}
  .foot-c{padding-left:14px;padding-right:14px}

  .dock{display:grid;position:fixed;left:0;right:0;bottom:0;z-index:50;height:calc(var(--dockh) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);grid-template-columns:repeat(5,1fr)}
  .dock a,.dock button{border:0;background:none;font:600 12px/1.1 var(--sans);color:#475569;text-decoration:none;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;min-width:0;padding:0}

  /* Heft-Reiter: Lineal oben, aktiver Reiter hebt sich ab */
  .dock-tabs{background:var(--paper);border-top:3px solid var(--g);box-shadow:0 -6px 14px rgba(15,23,42,.08)}
  .dock-tabs::before{content:"";position:absolute;left:0;right:0;top:-12px;height:9px;background:repeating-linear-gradient(90deg,var(--g) 0 2px,transparent 2px 9px);opacity:.55;pointer-events:none}
  .dock-tabs i{width:42px;height:30px;border-radius:15px;display:grid;place-items:center;transition:background .2s,transform .2s}
  .dock-tabs a:active i,.dock-tabs button:active i{transform:scale(.92)}
  .dock-tabs [aria-current=page]{color:var(--g-d)}
  .dock-tabs [aria-current=page] i{background:var(--g);color:#fff}
  .dock-tabs a:nth-child(2) i{background:#fff;border:1.5px solid var(--g);color:var(--g-d)}

  /* Klassische Leiste (nur Vollbild-Seite) */
  .dock-classic{background:#fff;border-radius:18px 18px 0 0;box-shadow:0 -4px 18px rgba(15,23,42,.12);align-items:end}
  .dock-classic a,.dock-classic button{height:var(--dockh);color:#64748b;font-weight:600}
  .dock-classic a:nth-child(2){color:#4f46e5}
  .dock-classic .fab{position:relative;color:#ef4444;gap:2px;justify-content:flex-end;padding-bottom:8px}
  .dock-classic .fab-b{width:58px;height:58px;border-radius:50%;background:#ef4444;color:#fff;display:grid;place-items:center;border:4px solid #fff;box-shadow:0 6px 16px rgba(239,68,68,.45);margin-top:-30px}
  .dock-classic .fab-b .ic{width:26px;height:26px}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{
  .top,.dock,.foot,.sheet,.fb,.acts,.modes{display:none!important}
  body{background:#fff;padding:0}body::before{display:none}
  .heft{border:1px solid #000;box-shadow:none}
}