:root{--bg:#f4f6fa;--surface:#fff;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--primary:#047857;--primary-dark:#065f46;--primary-soft:#ecfdf5;--accent:#d97706;--danger:#b91c1c;--radius:14px;--radius-sm:10px;--shadow:0 1px 2px rgba(15,23,42,.06),0 12px 32px -16px rgba(15,23,42,.22)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;font-variant-numeric:tabular-nums}
[hidden]{display:none!important}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
main>section,main>div{margin:40px 0}
header{position:sticky;top:0;z-index:20;background:#fff;box-shadow:0 1px 2px rgba(15,23,42,.06),0 6px 18px -10px rgba(15,23,42,.18)}
.hd{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:17px}
.mark{display:grid;place-items:center;width:40px;height:40px;border-radius:14px;background:var(--primary);color:#fff;font-weight:800;font-size:15px}
nav a{margin-left:22px;font-size:14px;color:var(--muted);text-decoration:none;transition:color .15s}
nav a:hover{color:var(--ink)}
a{color:var(--primary)}
h1{font-size:30px;line-height:1.2;font-weight:800;margin:40px 0 10px}
h2{font-size:22px;font-weight:700;margin:0 0 14px}
h3{font-size:18px;font-weight:700;margin:22px 0 10px}
.intro{color:var(--muted);max-width:720px;margin:0}
.card{background:var(--surface);border-radius:16px;box-shadow:var(--shadow);padding:28px}
@media(max-width:640px){.card{padding:20px}h1{font-size:26px}}
.ttl{display:flex;align-items:center;gap:12px;margin-bottom:20px}.ttl h2{margin:0}
.ico{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--primary-soft);color:var(--primary)}
/* ---- Formular ---- */
fieldset{border:0;margin:0 0 14px;padding:0;min-width:0}
legend{font-weight:600;padding:0;margin-bottom:8px;font-size:14px}
.modes{display:flex;flex-wrap:wrap;gap:10px}.modes legend{width:100%}
.modes label{border:1.5px solid var(--line);border-radius:999px;padding:9px 18px;cursor:pointer;font-size:14px;font-weight:600;transition:all .15s ease;background:#fff}
.modes label:hover{border-color:var(--primary)}
.modes label:has(:checked){background:var(--primary);color:#fff;border-color:var(--primary)}
.modes input[type=radio]{width:auto;height:auto;min-height:0;margin:0 6px 0 0;accent-color:#fff}
.grid{display:grid;gap:18px 20px;grid-template-columns:1fr}
.grid4{display:grid;gap:18px 20px;grid-template-columns:1fr 1fr}
@media(min-width:640px){.grid{grid-template-columns:1fr 1fr}.grid4{grid-template-columns:repeat(4,1fr)}}
.f{position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:4px 6px}
.f label{font-size:14px;font-weight:600}
.f[hidden]{display:none}
input,select{width:100%;height:46px;border:1.5px solid var(--line);border-radius:var(--radius-sm);padding:0 14px;font:inherit;color:var(--ink);background:#fff;transition:border-color .15s,box-shadow .15s}
input:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(4,120,87,.15)}
input[type=radio],input[type=checkbox]{width:auto;height:auto;min-height:0;padding:0;accent-color:var(--primary)}
.i{display:inline-grid;place-items:center;width:18px;height:18px;border-radius:50%;background:var(--line);color:var(--ink);font:700 .7rem/1 system-ui;cursor:help;position:relative}
.i:hover::after,.i:focus::after{content:attr(data-tip);position:absolute;z-index:9;left:0;top:24px;width:230px;max-width:70vw;background:var(--ink);color:#fff;font:400 .8rem/1.4 system-ui;padding:8px 10px;border-radius:8px;box-shadow:0 4px 14px rgba(0,0,0,.3)}
.f:nth-child(even) .i:hover::after,.f:nth-child(even) .i:focus::after{left:auto;right:-20px}
.hint{color:var(--muted);font-size:13px;margin:0 0 8px}
.warn,.err{border-radius:var(--radius-sm);padding:12px 14px;margin:14px 0;font-size:14px}
.warn{background:#fef3c7;color:#92400e}.err{background:#fef2f2;color:var(--danger)}
.err ul{margin:0;padding-left:18px}
/* ---- Zusatz-Details (Zuschlagssätze) ---- */
.zs{background:var(--surface);border:1.5px solid var(--line);border-radius:var(--radius-sm);padding:2px 18px;margin:0 0 18px}
.zs summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;padding:16px 0;font-weight:600;font-size:15px}
.zs summary::-webkit-details-marker{display:none}
.zs summary::after{content:"+";font-size:22px;line-height:1;color:var(--primary);transition:transform .2s}
.zs details,.zs summary{border:0}
.zs[open] summary::after{content:"−";transform:rotate(180deg)}
.zs .grid4{margin-bottom:16px}
/* ---- Buttons ---- */
.btns{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
button{font:inherit;font-weight:600;cursor:pointer;border-radius:var(--radius-sm);padding:13px 22px;border:1.5px solid var(--primary);background:var(--primary);color:#fff;transition:all .15s ease;min-height:44px}
button:hover{background:var(--primary-dark);border-color:var(--primary-dark);transform:translateY(-1px);box-shadow:0 8px 18px -10px rgba(6,95,70,.7)}
button:active{transform:translateY(0)}
button:focus-visible,summary:focus-visible,a:focus-visible{outline:3px solid rgba(4,120,87,.4);outline-offset:2px}
.primary{flex:1 1 100%}
.sec{background:#fff;border-color:var(--line);color:var(--ink);flex:0 0 auto}
.sec:hover{background:#fff;border-color:var(--primary);color:var(--primary-dark);box-shadow:0 8px 18px -12px rgba(15,23,42,.4)}
/* ---- Ergebnis ---- */
.hero{display:grid;gap:16px;grid-template-columns:1fr 1fr}
@media(min-width:860px){.hero{grid-template-columns:repeat(4,1fr)}}
.tile{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.tile span{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:600}
.tile b{display:block;font-size:32px;line-height:1.2;font-weight:800;margin-top:6px}
.tile small{display:block;font-size:14px;font-weight:600;color:var(--muted)}
.tile.alt{background:var(--primary-soft)}
.tile.alt b{color:var(--primary-dark)}
.cmp{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:640px){.cmp{grid-template-columns:1fr 1fr}}
.det{list-style:none;margin:0;padding:0}
.det li{display:flex;justify-content:space-between;gap:14px;padding:10px 0;border-bottom:1px solid var(--line)}
.det li:last-child{border:0}
.det li.tot{font-weight:700}
.bars{margin:16px 0}
.bar-row{display:flex;align-items:center;gap:12px;margin:8px 0;font-size:14px}
.bar-row>span{width:56px;flex:none;font-weight:600;color:var(--muted)}
.bar-track{flex:1;background:var(--line);border-radius:999px;height:26px;overflow:hidden}
.bar-fill{height:100%;background:var(--primary);color:#fff;font-size:.8rem;font-weight:600;padding:4px 10px;white-space:nowrap;transition:width .3s}
.bar-fill.n{background:var(--primary-dark)}
.extra{color:var(--muted);font-size:14px;margin:6px 0}
.act{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}
.act button{padding:9px 16px;min-height:40px;font-size:14px}
.disc{font-size:13px;color:var(--muted);margin:12px 0 0}
/* ---- Verlauf ---- */
.hist{list-style:none;padding:0;margin:0}
.hist li{margin:6px 0}
.hist button{width:100%;text-align:left;font-size:14px;font-weight:500;padding:10px 14px;background:#fff;border-color:var(--line);color:var(--ink)}
.hist button:hover{border-color:var(--primary);color:var(--primary-dark);background:#fff;transform:none;box-shadow:none}
/* ---- FAQ-Akkordeon ---- */
#faq details{border-bottom:1px solid var(--line)}
#faq details:last-child{border-bottom:0}
#faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;padding:18px 0;font-weight:600}
#faq summary::-webkit-details-marker{display:none}
#faq summary::after{content:"+";font-size:22px;line-height:1;color:var(--primary);transition:transform .2s;flex:none}
#faq details[open] summary::after{content:"−";transform:rotate(180deg)}
#faq details p{margin:0 0 18px;color:var(--muted);animation:fd .25s ease}
@keyframes fd{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
/* ---- Verwandte Rechner ---- */
.rel{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:720px){.rel{grid-template-columns:repeat(3,1fr)}}
.rel a{display:block;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;text-decoration:none;color:var(--ink);transition:transform .15s}
.rel a:hover{transform:translateY(-2px)}
.rel strong{display:block;font-size:16px}
.rel span{display:block;color:var(--muted);font-size:14px}
/* ---- Footer ---- */
footer{background:var(--ink);color:#cbd5e1;padding:36px 0;margin-top:56px;font-size:14px}
footer a{color:#fff}
footer .t{color:#fff;font-weight:600}
/* ---- Druck ---- */
@media print{
header,footer,.noprint,#faq,.rel,.act,#histbox{display:none!important}
body{background:#fff}
.card{box-shadow:none;border:1px solid #ccc}
.tile{box-shadow:none;border:1px solid #999;background:#fff}.tile b,.tile.alt b{color:#000}
.bar-fill,.bar-fill.n{background:#555!important;color:#fff;-webkit-print-color-adjust:exact;print-color-adjust:exact}
h1::after{content:" – Ergebnis"}
}