/* ziffer.ai Website. Farben und Schrift aus dem Designsystem (Teal, Anthrazit, Creme, IBM Plex). */
@font-face{font-family:"IBM Plex Sans";font-weight:400;font-style:normal;font-display:swap;src:url(fonts/ibm-plex-sans-400.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:500;font-style:normal;font-display:swap;src:url(fonts/ibm-plex-sans-500.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:600;font-style:normal;font-display:swap;src:url(fonts/ibm-plex-sans-600.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:700;font-style:normal;font-display:swap;src:url(fonts/ibm-plex-sans-700.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-weight:400;font-style:normal;font-display:swap;src:url(fonts/ibm-plex-mono-400.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-weight:500;font-style:normal;font-display:swap;src:url(fonts/ibm-plex-mono-500.woff2) format("woff2")}

:root{
  --cream:#f4f1e8;--cream-2:#ebe6d9;--paper:#fffcf4;--line:#d7d0c0;--line-strong:#b9b09c;
  --ink:#181922;--ink-strong:#101117;--muted:#5f5b51;
  --charcoal:#14151b;--charcoal-2:#1d1e27;--charcoal-line:#2f303a;--cream-dim:#a9a598;
  --teal:#2c8f89;--teal-ink:#1f6f6a;--teal-bright:#48c2ba;--amber:#a86512;--amber-bg:#f6ead3;
  --sans:"IBM Plex Sans","Segoe UI",system-ui,sans-serif;--mono:"IBM Plex Mono",Consolas,monospace;
  --wrap:1120px;--r:3px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--cream);color:var(--ink);font:400 17px/1.6 var(--sans)}
img{max-width:100%;display:block}
a{color:var(--teal-ink);text-underline-offset:3px}
a:hover{color:var(--ink-strong)}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px}
.wrap{width:min(var(--wrap),100% - 32px);margin:0 auto}
.mono{font-family:var(--mono)}
.label{font:500 12px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:12px;z-index:50;background:var(--paper);padding:8px 12px}

/* Kopfzeile */
.top{position:sticky;top:0;z-index:20;background:var(--cream);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-strong);text-decoration:none;font-weight:700;font-size:18px;letter-spacing:.01em}
.brand img{width:30px;height:30px}
.nav{display:flex;gap:22px;margin-left:auto;align-items:center}
.nav a{color:var(--ink);text-decoration:none;font-size:15px}
.nav a:hover{color:var(--teal-ink)}
.nav .quiet{color:var(--muted)}
.btn{display:inline-block;background:var(--teal);color:#fffcf4;border:1px solid var(--teal);border-radius:var(--r);padding:11px 18px;font:600 15px/1.2 var(--sans);text-decoration:none;cursor:pointer}
.btn:hover{background:var(--teal-ink);border-color:var(--teal-ink);color:#fffcf4}
.btn.small{padding:8px 14px;font-size:14px}
.menu-toggle{display:none}

/* Einstieg */
.hero{padding:72px 0 64px;border-bottom:1px solid var(--line)}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;align-items:end}
.hero h1{font-size:clamp(36px,5.2vw,62px);line-height:1.06;letter-spacing:-.02em;font-weight:600;margin:14px 0 22px;color:var(--ink-strong);max-width:14ch}
.hero p.lead{font-size:20px;line-height:1.55;max-width:34em;margin:0 0 30px}
.hero .after{margin:14px 0 0;color:var(--muted);font-size:15px}
.photo{position:relative;background:var(--cream-2);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.photo img{width:100%;height:100%;object-fit:cover}
.photo.slot{display:flex;align-items:flex-end;padding:18px;min-height:420px;background:repeating-linear-gradient(135deg,var(--cream-2) 0 14px,#e5dfd0 14px 15px)}
.photo.slot span{font:500 12px/1.5 var(--mono);color:var(--muted);background:var(--cream);padding:6px 9px;border:1px solid var(--line)}
.photo.tall{aspect-ratio:4/5}
.photo.wide{aspect-ratio:3/2;min-height:0}

.ref{padding:22px 0;border-bottom:1px solid var(--line);background:var(--paper)}
.ref .wrap{display:flex;gap:18px;align-items:baseline;flex-wrap:wrap}
.ref p{margin:0;font-size:16px}

/* Abschnitte */
section{padding:88px 0}
section + section{border-top:1px solid var(--line)}
.head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:48px;margin-bottom:44px}
.head h2{font-size:clamp(28px,3.4vw,40px);line-height:1.12;letter-spacing:-.015em;font-weight:600;margin:10px 0 0;color:var(--ink-strong)}
.head p{margin:34px 0 0;font-size:18px;color:var(--ink);max-width:36em}

.steps{list-style:none;margin:0;padding:0;border-top:1px solid var(--line-strong)}
.steps li{display:grid;grid-template-columns:72px minmax(0,.9fr) minmax(0,1.6fr);gap:24px;padding:26px 0;border-bottom:1px solid var(--line)}
.steps .n{font:500 14px/1.9 var(--mono);color:var(--teal-ink)}
.steps h3{margin:0;font-size:21px;line-height:1.35;font-weight:600;color:var(--ink-strong)}
.steps p{margin:0;max-width:40em}

/* Ergebnis: dunkles Band mit Karteikarte */
.dark{background:var(--charcoal);color:#f4f1e8;border-top:0}
.dark + section{border-top:0}
.dark .label{color:var(--cream-dim)}
.dark .head h2{color:#fffaf0}
.dark .head p{color:#e4e0d4}
.result{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:20px;align-items:start}
.card{background:var(--paper);color:var(--ink);border-radius:var(--r);border:1px solid #3a3b45}
.card .bar{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:12px 18px;border-bottom:1px solid var(--line);font:500 13px/1.5 var(--mono);color:var(--muted)}
.card .bar b{color:var(--ink-strong);font-weight:500}
.doc{margin:0;padding:6px 18px 14px}
.doc div{display:grid;grid-template-columns:128px minmax(0,1fr);gap:14px;padding:10px 0;border-bottom:1px solid var(--cream-2)}
.doc div:last-child{border-bottom:0}
.doc dt{font:500 12px/1.9 var(--mono);text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.doc dd{margin:0;font-size:15.5px;line-height:1.55}
.codes{width:100%;border-collapse:collapse;font-size:15px}
.codes th{font:500 12px/1.4 var(--mono);text-transform:uppercase;letter-spacing:.06em;color:var(--muted);text-align:left;padding:10px 18px;border-bottom:1px solid var(--line)}
.codes td{padding:11px 18px;border-bottom:1px solid var(--cream-2);vertical-align:top}
.codes td.c{font:500 15px/1.5 var(--mono);color:var(--ink-strong);white-space:nowrap}
.codes td small{display:block;color:var(--muted);font-size:13px;line-height:1.45;margin-top:3px}
.ask{margin:14px 18px 18px;padding:12px 14px;background:var(--amber-bg);border-left:3px solid var(--amber);font-size:14.5px;line-height:1.5}
.ask .label{color:var(--amber);display:block;margin-bottom:4px}
.note{margin:18px 0 0;font-size:14px;color:var(--cream-dim)}

/* Zweispaltige Faktenlisten */
.facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px;border-top:1px solid var(--line-strong)}
.facts > div{padding:24px 0;border-bottom:1px solid var(--line)}
.facts h3{margin:0 0 6px;font-size:19px;font-weight:600;color:var(--ink-strong)}
.facts p{margin:0}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:start}
.more{margin-top:28px;font-weight:500}

/* Formular */
.contact .wrap{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:64px}
.contact h2{font-size:clamp(28px,3.4vw,40px);line-height:1.12;font-weight:600;margin:10px 0 18px;color:var(--ink-strong)}
form{display:grid;grid-template-columns:1fr 1fr;gap:16px 18px}
form .full{grid-column:1/-1}
label.f{display:grid;gap:6px;font-size:14px;font-weight:500}
label.f span em{font-style:normal;color:var(--muted);font-weight:400}
input,textarea,select{font:400 16px/1.4 var(--sans);color:var(--ink);background:var(--paper);border:1px solid var(--line-strong);border-radius:var(--r);padding:11px 12px;width:100%}
input:focus,textarea:focus{outline:2px solid var(--teal);outline-offset:0;border-color:var(--teal)}
textarea{min-height:110px;resize:vertical}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.formnote{font-size:13.5px;color:var(--muted);margin:0}
.status{font-size:15px;margin:0;min-height:1.5em}
.status.ok{color:var(--teal-ink)}.status.err{color:#a5332a}

/* Unterseiten */
.page{padding:64px 0 88px}
.page h1{font-size:clamp(32px,4vw,48px);line-height:1.1;letter-spacing:-.015em;font-weight:600;margin:12px 0 18px;color:var(--ink-strong);max-width:20ch}
.page .lead{font-size:19px;max-width:38em;margin:0 0 40px}
.prose{max-width:46em}
.prose h2{font-size:23px;line-height:1.3;font-weight:600;margin:44px 0 10px;color:var(--ink-strong)}
.prose h3{font-size:18px;margin:26px 0 6px}
.prose ul{padding-left:20px}.prose li{margin:6px 0}
.prose table{border-collapse:collapse;width:100%;font-size:15.5px;margin:12px 0}
.prose th,.prose td{text-align:left;padding:9px 12px 9px 0;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{font:500 12px/1.5 var(--mono);text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.todo{background:var(--amber-bg);border-left:3px solid var(--amber);padding:2px 6px}

/* Fußzeile */
footer{background:var(--charcoal);color:var(--cream-dim);padding:36px 0;font-size:14.5px}
footer .wrap{display:flex;gap:24px;flex-wrap:wrap;align-items:center}
footer a{color:#e4e0d4;text-decoration:none}
footer a:hover{color:#fffaf0}
footer nav{display:flex;gap:20px;margin-left:auto;flex-wrap:wrap}

@media (max-width:900px){
  .hero .wrap,.head,.result,.split,.contact .wrap{grid-template-columns:1fr;gap:28px}
  .head p{margin-top:0}
  .photo.slot{min-height:300px}
  .steps li{grid-template-columns:44px minmax(0,1fr);gap:8px 14px}
  .steps li p{grid-column:2}
  .facts{grid-template-columns:1fr}
  .nav{display:none}
  .menu-toggle{display:inline-block;margin-left:auto;background:none;border:1px solid var(--line-strong);border-radius:var(--r);padding:7px 11px;font:500 14px var(--sans);color:var(--ink)}
  .top.open .nav{display:flex;position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:flex-start;gap:14px;padding:18px 16px 22px;background:var(--cream);border-bottom:1px solid var(--line)}
  section{padding:64px 0}
  .hero{padding:44px 0}
  form{grid-template-columns:1fr}
  .doc div{grid-template-columns:1fr;gap:2px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.facts.one{grid-template-columns:1fr}
h2.sub{font-size:clamp(28px,3.4vw,40px);line-height:1.12;letter-spacing:-.015em;font-weight:600;margin:10px 0 28px;color:var(--ink-strong)}