:root{--navy:#1f3a4d;--navy-2:#16303f;--petrol:#2a6b6e;--petrol-l:#e3efee;--accent:#e07a4f;--accent-d:#9e4421;--cream:#f7f2eb;--line:#e4ddd3;--text:#1d2a33;--muted:#4f5f69;--white:#fff;--r:14px;--max:72rem;--read:44rem;
--sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;--serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;font-family:var(--sans);font-size:1.0625rem;line-height:1.65;color:var(--text);background:var(--white)}
img{max-width:100%;height:auto;display:block}
a{color:var(--petrol);text-underline-offset:.18em}
a:hover{color:var(--accent-d)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
h1,h2,h3{font-family:var(--serif);line-height:1.2;color:var(--navy);font-weight:700}
h1{font-size:clamp(2rem,4.6vw,3.1rem);margin:.2em 0 .4em}
h2{font-size:clamp(1.45rem,2.6vw,1.9rem);margin:2em 0 .6em}
h3{font-size:1.22rem;margin:1.6em 0 .4em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 1.25rem}
.skip{position:absolute;left:-999px;top:0;background:var(--navy);color:#fff;padding:.6rem 1rem;z-index:10}
.skip:focus{left:1rem}
/* header */
.site-header{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:4rem;flex-wrap:wrap}
.logo{font-family:var(--serif);font-weight:700;font-size:1.35rem;color:var(--navy);text-decoration:none;letter-spacing:-.01em}
.logo span{color:var(--accent-d)}
.nav{display:flex;gap:.25rem;flex-wrap:wrap}
.nav a{color:var(--navy);text-decoration:none;font-weight:600;padding:.45rem .7rem;border-radius:8px;font-size:.98rem}
.nav a:hover,.nav a[aria-current=page]{background:var(--petrol-l);color:var(--navy)}
.nav a.nav-kit{background:var(--accent);color:var(--navy-2)}
.nav a.nav-kit:hover{background:#ea9068}
/* buttons */
.btn{display:inline-block;font-weight:700;text-decoration:none;padding:.85rem 1.3rem;border-radius:999px;border:2px solid transparent;line-height:1.2;cursor:pointer;font-size:1rem;font-family:var(--sans)}
.btn-accent{background:var(--accent);color:var(--navy-2)}
.btn-accent:hover{background:#ea9068;color:var(--navy-2)}
.btn-ghost{border-color:currentColor;color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff}
.btn-petrol{background:var(--petrol);color:#fff}
.btn-petrol:hover{background:var(--navy);color:#fff}
/* hero */
.hero{background:var(--navy);color:#e9eef1;padding:4rem 0 4.5rem;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-8rem;bottom:-14rem;width:30rem;height:30rem;border:3.2rem solid var(--petrol);border-radius:50%;opacity:.55}
.hero .wrap{position:relative;z-index:1}
.hero h1{color:#fff;max-width:17ch}
.hero h1 em{font-style:normal;color:#f0b393}
.eyebrow{text-transform:uppercase;letter-spacing:.09em;font-size:.8rem;font-weight:700;color:#f0b393;margin:0}
.hero .lead{font-size:1.2rem;max-width:40rem;color:#dbe4e9}
.hero .actions{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1.6rem}
.hero-note{font-size:.88rem;color:#b9c7cf;margin-top:1.4rem}
/* sections */
.section{padding:3.5rem 0}
.section.alt{background:var(--cream)}
.section h2{margin-top:0}
.section-intro{color:var(--muted);max-width:42rem;margin-top:-.2rem}
.grid{display:grid;gap:1.1rem;grid-template-columns:repeat(auto-fill,minmax(18rem,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:1.35rem 1.35rem 1.2rem;display:flex;flex-direction:column;gap:.35rem;text-decoration:none;color:var(--text);transition:transform .15s,box-shadow .15s}
a.card:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(31,58,77,.12);color:var(--text)}
.card h3{margin:.1rem 0 .1rem;font-size:1.15rem}
.card p{margin:0;color:var(--muted);font-size:.97rem}
.card .more{margin-top:auto;padding-top:.6rem;font-weight:700;color:var(--petrol);font-size:.95rem}
.tag{display:inline-block;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--accent-d)}
.steps{counter-reset:s}
.steps .card{position:relative;padding-top:3.3rem}
.steps .card::before{counter-increment:s;content:counter(s);position:absolute;top:1.1rem;left:1.35rem;width:1.9rem;height:1.9rem;border-radius:50%;background:var(--petrol);color:#fff;font-weight:700;display:grid;place-items:center;font-size:.95rem}
/* kit */
.kit{display:grid;gap:2rem;grid-template-columns:1fr;align-items:center}
@media(min-width:860px){.kit{grid-template-columns:1.05fr 1fr}}
.kit img{border-radius:var(--r);box-shadow:0 12px 34px rgba(31,58,77,.18)}
.checks{list-style:none;padding:0;margin:1rem 0}
.checks li{padding-left:1.8rem;position:relative;margin:.45rem 0}
.checks li::before{content:"";position:absolute;left:0;top:.42em;width:1.05rem;height:1.05rem;border-radius:50%;background:var(--petrol) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5l2.5 2.5L12 5.5' fill='none' stroke='%23fff' stroke-width='2'/%3E%3C/svg%3E") center/80% no-repeat}
.price{font-family:var(--serif);font-size:2rem;font-weight:700;color:var(--navy);margin:.2rem 0}
.price small{font-family:var(--sans);font-size:.9rem;color:var(--muted);font-weight:400}
.fine{font-size:.86rem;color:var(--muted)}
.gallery{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(14rem,1fr));margin-top:1.5rem}
.gallery img{border-radius:10px;border:1px solid var(--line)}
/* article */
.crumbs{font-size:.9rem;color:var(--muted);padding-top:1.2rem}
.crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:.3rem}
.crumbs li:not(:last-child)::after{content:"›";margin-left:.35rem;color:#9aa6ad}
.crumbs a{color:var(--muted)}
.article-head{max-width:var(--read);padding-bottom:.5rem}
.meta{color:var(--muted);font-size:.92rem}
.layout{display:grid;gap:2.5rem;grid-template-columns:minmax(0,1fr);padding-bottom:3rem}
@media(min-width:1080px){.layout{grid-template-columns:minmax(0,var(--read)) 16rem;justify-content:space-between}.toc{position:sticky;top:5rem;align-self:start;order:2}}
.toc{background:var(--cream);border-radius:var(--r);padding:1rem 1.2rem;font-size:.95rem}
.toc summary{font-weight:700;color:var(--navy);cursor:pointer}
.toc ol{padding-left:1.1rem;margin:.6rem 0 0}
.toc li{margin:.3rem 0}
.toc a{color:var(--text);text-decoration:none}
.toc a:hover{color:var(--petrol);text-decoration:underline}
.prose{max-width:var(--read);min-width:0}
.prose h2{scroll-margin-top:5rem}
.prose h3{scroll-margin-top:5rem}
.prose p,.prose li{max-width:68ch}
.prose ul,.prose ol{padding-left:1.3rem}
.prose li{margin:.3rem 0}
.prose blockquote{margin:1.5rem 0;padding:1rem 1.2rem;background:var(--petrol-l);border-left:4px solid var(--petrol);border-radius:0 10px 10px 0}
.prose blockquote p{margin:0}
.table-wrap{overflow-x:auto;margin:1.2rem 0;border:1px solid var(--line);border-radius:10px}
.prose table{border-collapse:collapse;width:100%;font-size:.95rem;min-width:30rem}
.prose th,.prose td{text-align:left;padding:.6rem .8rem;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{background:var(--cream);color:var(--navy)}
.prose tr:last-child td{border-bottom:0}
.faq-q{font-weight:700}
.cta-box{display:grid;gap:1.2rem;grid-template-columns:1fr;align-items:center;background:var(--navy);color:#e3eaee;border-radius:var(--r);padding:1.5rem;margin:2.5rem 0 1.5rem}
@media(min-width:640px){.cta-box{grid-template-columns:11rem 1fr}}
.cta-box img{border-radius:8px}
.cta-box h2,.cta-box h3{color:#fff;margin:0 0 .3rem;font-size:1.3rem}
.cta-box p{margin:.3rem 0 .9rem}
.cta-box strong{color:#fff}
.note{font-size:.9rem;color:var(--muted);border-top:1px solid var(--line);padding-top:1rem;margin-top:1.5rem}
.related{background:var(--cream);padding:2.5rem 0}
.related h2{margin-top:0;font-size:1.4rem}
/* rechner */
.calc{background:var(--cream);border-radius:var(--r);padding:1.5rem;margin:1.5rem 0}
.calc .row{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(14rem,1fr))}
.field{display:flex;flex-direction:column;gap:.3rem}
.field label{font-weight:700;color:var(--navy);font-size:.97rem}
.field .hint{font-size:.84rem;color:var(--muted)}
.field input,.field select{font:inherit;padding:.7rem .8rem;border:1.5px solid #c9c0b4;border-radius:10px;background:#fff;color:var(--text);width:100%;min-height:2.9rem}
.field input:focus,.field select:focus{border-color:var(--petrol);outline:none;box-shadow:0 0 0 3px rgba(42,107,110,.25)}
.check{display:flex;gap:.6rem;align-items:flex-start;margin-top:1rem}
.check input{width:1.2rem;height:1.2rem;margin-top:.25rem;accent-color:var(--petrol)}
.calc .btn{margin-top:1.2rem}
.result{margin-top:1.4rem;background:#fff;border:1px solid var(--line);border-left:5px solid var(--accent);border-radius:10px;padding:1.2rem 1.3rem}
.result[hidden]{display:none}
.result .big{font-family:var(--serif);font-size:1.8rem;font-weight:700;color:var(--navy);margin:.1rem 0 .5rem}
.result dl{display:grid;grid-template-columns:auto 1fr;gap:.35rem 1rem;margin:.6rem 0 0}
.result dt{font-weight:700;color:var(--navy)}
.result dd{margin:0}
.result .warn{background:#fdf0e9;border-radius:8px;padding:.6rem .8rem;margin:.8rem 0 0;font-size:.95rem}
.error{color:#a3361b;font-weight:700;margin-top:1rem}
.disclaimer{background:#fdf0e9;border:1px solid #f1cdb9;border-radius:10px;padding:.9rem 1.1rem;font-size:.95rem}
.sources{font-size:.93rem}
/* footer */
.site-footer{background:var(--navy-2);color:#c5d1d8;padding:2.5rem 0 2rem;font-size:.93rem}
.site-footer a{color:#fff}
.site-footer .cols{display:grid;gap:1.5rem;grid-template-columns:repeat(auto-fill,minmax(14rem,1fr))}
.site-footer h2{color:#fff;font-size:1rem;font-family:var(--sans);margin:0 0 .5rem}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:.3rem 0}
.site-footer .legal{border-top:1px solid rgba(255,255,255,.15);margin-top:2rem;padding-top:1.2rem;font-size:.86rem}
.placeholder{background:#fff3b0;color:#5a4500;padding:0 .25em;border-radius:3px;font-weight:700}
.page{max-width:var(--read);padding-bottom:3rem}
.center{text-align:center}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.site-header,.site-footer,.toc,.cta-box,.related{display:none}}
@media(max-width:640px){.site-header{position:static}.site-header .wrap{padding-top:.4rem;padding-bottom:.4rem;min-height:0}}
.site-footer .logo span{color:#f0b393}
.badge-soon{display:inline-block;background:var(--petrol-l);color:var(--navy);font-weight:700;padding:.55rem 1rem;border-radius:999px;border:2px dashed var(--petrol)}
.prose ul.todo-list{list-style:none;padding-left:0}.todo{position:relative;padding-left:1.9rem}.todo::before{content:"";position:absolute;left:0;top:.3em;width:1.1rem;height:1.1rem;border:2px solid var(--petrol);border-radius:4px;background:#fff}.todo.done::before{background:var(--petrol)}

.banner-draft{background:#fff3b0;color:#5a4500;border:1px solid #e0c84a;border-radius:10px;padding:.9rem 1.1rem;margin:0 0 1.5rem}
.tiers{display:grid;gap:1.2rem;margin:1.6rem 0 2.2rem;grid-template-columns:1fr}
@media(min-width:860px){.tiers{grid-template-columns:repeat(3,1fr);align-items:stretch}}
.tier{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:1.4rem 1.3rem 1.3rem;display:flex;flex-direction:column}
.tier.featured{border:2px solid var(--accent);box-shadow:0 10px 28px rgba(31,58,77,.12)}
.tier .checks{flex:1;margin:.6rem 0 1rem}
.tier .btn{align-self:flex-start;margin-top:.2rem}