/* Layout concept: "Prüfstation" — asymmetric two-column grid; left the statement, right a monospaced protocol panel.
   Asset-tag labels and inventory lists come from the world of IT asset handling. */
@font-face{font-family:"Archivo";src:url("fonts/archivo-wdth.woff2") format("woff2");font-weight:100 900;font-stretch:62% 125%;font-display:swap}
@font-face{font-family:"Plex Sans";src:url("fonts/plex-sans-400.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Plex Sans";src:url("fonts/plex-sans-500.woff2") format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Plex Sans";src:url("fonts/plex-sans-600.woff2") format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Plex Mono";src:url("fonts/plex-mono-400.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Plex Mono";src:url("fonts/plex-mono-500.woff2") format("woff2");font-weight:500;font-display:swap}

:root{
  --bg:#F1F4F3; --surface:#FFFFFF; --ink:#0E1B18; --muted:#51605B; --line:#D3DBD8;
  --deep:#12302A; --deep-ink:#E7EFEC; --deep-muted:#9DB5AE; --deep-line:#2A4A42;
  --accent:#E0A11B; --accent-ink:#1B1300; --ok:#1F8A5B;
  --f-display:"Archivo","Arial Narrow",Arial,sans-serif;
  --f-body:"Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-mono:"Plex Mono",ui-monospace,"SFMono-Regular",Consolas,monospace;
  --w:1160px; --r:6px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0B1210; --surface:#121B18; --ink:#E3EAE7; --muted:#95A49F; --line:#22302C;
  --deep:#0E231E; --deep-ink:#E3EAE7; --deep-muted:#8FA9A1; --deep-line:#1F3A33;
  --accent:#F0B43A; --accent-ink:#1B1300; --ok:#3FB57F; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0B1210; --surface:#121B18; --ink:#E3EAE7; --muted:#95A49F; --line:#22302C;
  --deep:#0E231E; --deep-ink:#E3EAE7; --deep-muted:#8FA9A1; --deep-line:#1F3A33;
  --accent:#F0B43A; --accent-ink:#1B1300; --ok:#3FB57F; color-scheme:dark}

*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.6 var(--f-body)}
img{max-width:100%;height:auto}
a{color:inherit;text-decoration-color:var(--accent);text-underline-offset:3px;text-decoration-thickness:2px}
a:hover{text-decoration-color:currentColor}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:2px}
.wrap{max-width:var(--w);margin-inline:auto;padding-inline:clamp(16px,4vw,32px)}
h1,h2,h3{font-family:var(--f-display);font-stretch:112%;line-height:1.08;letter-spacing:-.01em;text-wrap:balance;margin:0}
h1{font-size:clamp(2.2rem,5.4vw,4.1rem);font-weight:800}
h2{font-size:clamp(1.6rem,3.2vw,2.4rem);font-weight:750}
h3{font-size:1.2rem;font-weight:700;font-stretch:105%}
p{margin:0;max-width:62ch}
.tag{font:500 .72rem/1 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);display:inline-flex;gap:.6em;align-items:center}
.tag::before{content:"";width:.6em;height:.6em;background:var(--accent);display:inline-block}
.lead{font-size:1.15rem;color:var(--muted)}

/* header */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font:800 1.15rem/1 var(--f-display);font-stretch:125%;letter-spacing:.02em}
.brand svg{flex:none}
.nav{display:flex;gap:4px;align-items:center}
.nav a{text-decoration:none;padding:8px 12px;border-radius:var(--r);font-weight:500;font-size:.95rem}
.nav a:hover{background:var(--surface)}
.nav a[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--accent)}
.nav .cta{background:var(--ink);color:var(--bg)}
.nav .cta:hover{background:var(--ink);opacity:.88}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:var(--r);padding:8px 10px;color:var(--ink);font:500 .9rem var(--f-body)}
@media (max-width:860px){
  .menu-btn{display:inline-block}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;background:var(--bg);border-bottom:1px solid var(--line);padding:8px clamp(16px,4vw,32px) 16px}
  .nav.open{display:flex}
  .nav a{padding:12px}
}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5em;padding:13px 20px;border-radius:var(--r);font:600 1rem/1 var(--f-body);text-decoration:none;border:2px solid transparent;cursor:pointer}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{filter:brightness(1.06)}
.btn-ghost{border-color:currentColor;background:transparent;color:inherit}
.btns{display:flex;flex-wrap:wrap;gap:12px}

/* hero */
.hero{padding-block:clamp(40px,7vw,88px) clamp(40px,6vw,72px)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(28px,5vw,64px);align-items:center}
.hero-copy{display:grid;gap:22px}
.hero h1 em{font-style:normal;background:linear-gradient(transparent 62%,color-mix(in srgb,var(--accent) 55%,transparent) 62%)}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}}

/* protocol panel */
.protocol{background:var(--deep);color:var(--deep-ink);border-radius:10px;padding:22px 22px 18px;font:400 .88rem/1.55 var(--f-mono);box-shadow:0 1px 0 var(--deep-line),0 24px 48px -28px rgba(0,0,0,.45);min-width:0}
.protocol-head{display:flex;justify-content:space-between;gap:12px;align-items:baseline;border-bottom:1px dashed var(--deep-line);padding-bottom:12px;margin-bottom:12px;flex-wrap:wrap}
.protocol-head b{font-weight:500;letter-spacing:.1em;text-transform:uppercase;font-size:.75rem}
.protocol-head span{color:var(--deep-muted);font-size:.75rem}
.protocol dl{display:grid;grid-template-columns:auto 1fr;gap:6px 18px;margin:0}
.protocol dt{color:var(--deep-muted)}
.protocol dd{margin:0;font-variant-numeric:tabular-nums;min-width:0;overflow-wrap:anywhere}
.protocol .ok{color:#6FD6A4}
.protocol .ok::before{content:"● "}
.protocol-foot{margin-top:14px;padding-top:10px;border-top:1px dashed var(--deep-line);color:var(--deep-muted);font-size:.72rem}
.bar{height:6px;border-radius:3px;background:var(--deep-line);overflow:hidden;margin-top:6px}
.bar i{display:block;height:100%;width:100%;background:var(--accent)}

/* sections */
section{padding-block:clamp(48px,7vw,88px)}
.sec-head{display:grid;gap:14px;margin-bottom:clamp(28px,4vw,44px)}
.alt{background:var(--surface);border-block:1px solid var(--line)}

/* offer grid */
.offers{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.offer{display:grid;gap:14px;align-content:start;padding:26px;border:1px solid var(--line);border-radius:10px;background:var(--bg);text-decoration:none;min-width:0}
.alt .offer{background:var(--bg)}
.offer:hover{border-color:var(--ink)}
.offer .code{font:500 .72rem/1 var(--f-mono);letter-spacing:.1em;color:var(--muted)}
.offer p{color:var(--muted)}
.offer .more{font-weight:600;margin-top:4px}
.offer .more::after{content:" →"}
.offer.feature{background:var(--deep);color:var(--deep-ink);border-color:var(--deep)}
.offer.feature p,.offer.feature .code{color:var(--deep-muted)}
@media (max-width:900px){.offers{grid-template-columns:1fr}}

/* steps (real sequences only) */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(var(--n,4),minmax(0,1fr));gap:0;counter-reset:s;border-top:2px solid var(--ink)}
.steps li{counter-increment:s;padding:18px 18px 0 0;display:grid;gap:8px;align-content:start;min-width:0}
.steps li::before{content:counter(s,decimal-leading-zero);font:500 .8rem/1 var(--f-mono);color:var(--muted)}
.steps b{font-family:var(--f-display);font-stretch:105%;font-size:1.05rem}
.steps span{color:var(--muted);font-size:.95rem}
@media (max-width:860px){.steps{grid-template-columns:1fr}.steps li{padding:16px 0;border-bottom:1px solid var(--line)}}

/* two-col */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,64px);align-items:start}
@media (max-width:860px){.split{grid-template-columns:1fr}}
.checks{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.checks li{position:relative;padding-left:32px}
.checks li::before{content:"";position:absolute;left:0;top:.42em;width:14px;height:14px;box-sizing:content-box;border:2px solid var(--accent);border-radius:2px;background:linear-gradient(135deg,transparent 45%,var(--accent) 45%,var(--accent) 60%,transparent 60%)}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px}
.fact{border-left:3px solid var(--accent);padding:4px 0 4px 16px;display:grid;gap:6px}
.fact b{font-family:var(--f-display);font-stretch:112%;font-size:1.1rem}
.fact span{color:var(--muted);font-size:.95rem}

/* inventory table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:.95rem;min-width:520px}
th,td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);vertical-align:top}
th{font:500 .72rem/1.2 var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
tr:last-child td{border-bottom:0}
td.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums;white-space:nowrap}

/* form */
.form{display:grid;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:clamp(18px,3vw,28px)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:640px){.row{grid-template-columns:1fr}}
label{display:grid;gap:6px;font-weight:500;font-size:.92rem}
input,select,textarea{font:inherit;font-size:1rem;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:11px 12px;width:100%}
textarea{min-height:110px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:0;border-color:var(--accent)}
.hint{font-size:.85rem;color:var(--muted);font-weight:400}
.form-out{display:grid;gap:10px;border-top:1px dashed var(--line);padding-top:14px}
.form-out pre{white-space:pre-wrap;font:400 .85rem/1.5 var(--f-mono);background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:12px;margin:0;max-height:260px;overflow:auto}
.err{color:#C0392B;font-size:.9rem}

/* contact strip */
.contact{background:var(--deep);color:var(--deep-ink)}
.contact .grid{display:grid;grid-template-columns:minmax(0,1.2fr) repeat(3,minmax(0,1fr));gap:28px;align-items:start}
.contact .k{font:500 .72rem/1 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--deep-muted);margin-bottom:8px;display:block}
.contact a{color:var(--deep-ink)}
.contact .big{font-family:var(--f-display);font-stretch:112%;font-weight:700;font-size:1.25rem}
@media (max-width:900px){.contact .grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.contact .grid{grid-template-columns:1fr}}
.copy{background:none;border:1px solid var(--deep-line);color:var(--deep-muted);border-radius:4px;font:500 .75rem var(--f-mono);padding:3px 8px;cursor:pointer;margin-left:8px}

/* legal pages */
.prose{display:grid;gap:14px;max-width:72ch}
.prose h2{font-size:1.35rem;margin-top:18px}
.prose h3{font-size:1.05rem;margin-top:8px}
.prose ul{margin:0;padding-left:1.2em;display:grid;gap:6px}

/* footer */
.foot{border-top:1px solid var(--line);padding-block:28px;font-size:.9rem;color:var(--muted)}
.foot .wrap{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between}
.foot nav{display:flex;flex-wrap:wrap;gap:6px 20px}
.foot a{text-decoration:none}
.foot a:hover{text-decoration:underline}

@media (prefers-reduced-motion:no-preference){
  .bar i{animation:fill 1.6s ease-out both}
  @keyframes fill{from{width:8%}to{width:100%}}
}

/* photos */
.photo{margin:0;display:grid;gap:10px;min-width:0}
.photo img{display:block;width:100%;border-radius:10px;aspect-ratio:4/3;object-fit:cover;object-position:50% 15%;border:1px solid var(--line);background:var(--deep)}
.photo.tall img{aspect-ratio:1/1}
.photo figcaption{font:400 .8rem/1.45 var(--f-mono);color:var(--muted)}
.since{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(28px,5vw,64px);align-items:center}
@media (max-width:860px){.since{grid-template-columns:1fr}}
.years{font:800 clamp(3.2rem,8vw,5.5rem)/0.9 var(--f-display);font-stretch:125%;color:var(--accent);letter-spacing:-.02em}

/* breadcrumbs */
.crumbs{font:400 .82rem/1.4 var(--f-mono);color:var(--muted);padding-top:22px;display:flex;flex-wrap:wrap;gap:6px}
.crumbs a{text-decoration:none}.crumbs a:hover{text-decoration:underline}
.crumbs span[aria-hidden]{opacity:.5}

/* article */
.article{display:grid;gap:18px;max-width:74ch;padding-block:clamp(28px,4vw,48px) clamp(48px,6vw,80px)}
.article h1{font-size:clamp(2rem,4.4vw,3.1rem)}
.article h2{font-size:clamp(1.35rem,2.4vw,1.7rem);margin-top:18px}
.article h3{margin-top:6px}
.article p,.article li{max-width:none}
.article ul,.article ol{margin:0;padding-left:1.25em;display:grid;gap:8px}
.meta{font:400 .82rem/1.4 var(--f-mono);color:var(--muted)}
.note{border-left:3px solid var(--accent);background:var(--surface);padding:14px 18px;border-radius:0 8px 8px 0}
.cta-box{background:var(--deep);color:var(--deep-ink);border-radius:10px;padding:clamp(20px,3vw,28px);display:grid;gap:12px;margin-top:10px}
.cta-box p{color:var(--deep-muted)}
.cta-box .btn-ghost{color:var(--deep-ink)}
.article .photo{margin-block:6px}
.article table{min-width:480px}

/* link cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.card{display:grid;gap:10px;align-content:start;padding:22px;border:1px solid var(--line);border-radius:10px;background:var(--bg);text-decoration:none;min-width:0}
.card:hover{border-color:var(--ink)}
.card .code{font:500 .72rem/1 var(--f-mono);letter-spacing:.1em;color:var(--muted);text-transform:uppercase}
.card p{color:var(--muted);font-size:.95rem}
.card .more{font-weight:600}.card .more::after{content:" →"}
.alt .card{background:var(--bg)}

/* history */
.timeline{list-style:none;margin:0;padding:0;display:grid;gap:0;border-left:2px solid var(--line)}
.timeline li{position:relative;padding:0 0 26px 26px;display:grid;gap:6px}
.timeline li::before{content:"";position:absolute;left:-7px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--bg);border:2px solid var(--accent)}
.timeline b{font-family:var(--f-display);font-stretch:108%;font-size:1.1rem}
.timeline span{color:var(--muted)}
.orig{border:1px dashed var(--line);border-radius:10px;padding:18px 20px;background:var(--surface);display:grid;gap:10px}
.orig .src{font:500 .72rem/1 var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.orig p,.orig li{font-family:Verdana,Tahoma,sans-serif;font-size:.92rem;max-width:none}
.orig ul{margin:0;padding-left:1.2em;display:grid;gap:4px}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.shots{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.shots .photo img{aspect-ratio:auto;object-fit:contain;background:#fff}
.price-old td:last-child{white-space:nowrap;font-family:var(--f-mono)}

/* mail image + forms */
.mailimg{display:inline-block;vertical-align:middle}
.mailimg img{display:block;height:1.35em;width:auto}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.form-status{font-size:.95rem;padding:12px 14px;border-radius:var(--r);background:var(--bg);border:1px solid var(--line)}
.form-status.ok{border-color:var(--ok)}
.form-status.bad{border-color:#C0392B}
.req{color:var(--accent)}
.faq{display:grid;gap:10px}
.faq details{border:1px solid var(--line);border-radius:8px;background:var(--surface);padding:14px 18px}
.faq summary{cursor:pointer;font-weight:600}
.faq details p{margin-top:10px;color:var(--muted)}
.kws{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0}
.kws li{font:500 .8rem/1 var(--f-mono);border:1px solid var(--line);border-radius:99px;padding:7px 12px;color:var(--muted)}

.orig>summary{cursor:pointer;list-style:none;display:flex;gap:12px;align-items:baseline;flex-wrap:wrap}
.orig>summary::-webkit-details-marker{display:none}
.orig>summary::before{content:"+";font:600 1rem var(--f-mono);color:var(--accent)}
details.orig[open]>summary::before{content:"\2212"}
details.orig[open]{gap:10px}