/* ==========================================================================
   mueller advisory — Website v4
   Designsystem nach Markenbuch v3.1 „Petrol & Messing"
   Leitidee: „Am Cursor" · Claim: KI im Einkauf. Machen statt zuschauen.
   Regeln: Papier statt Reinweiß · Linien statt Kästen · flach & ruhig ·
   ein Petrol-Held pro Fläche · Zahlen in Mono · 80/20 sichtbar
   ========================================================================== */

/* ---------- Schriften (lokal, SIL Open Font License) ---------- */
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:500;font-display:swap;src:url('/assets/fonts/space-grotesk-500.woff2') format('woff2')}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:600;font-display:swap;src:url('/assets/fonts/space-grotesk-600.woff2') format('woff2')}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:700;font-display:swap;src:url('/assets/fonts/space-grotesk-700.woff2') format('woff2')}
@font-face{font-family:'Work Sans';font-style:normal;font-weight:400;font-display:swap;src:url('/assets/fonts/work-sans-400.woff2') format('woff2')}
@font-face{font-family:'Work Sans';font-style:normal;font-weight:500;font-display:swap;src:url('/assets/fonts/work-sans-500.woff2') format('woff2')}
@font-face{font-family:'Work Sans';font-style:normal;font-weight:600;font-display:swap;src:url('/assets/fonts/work-sans-600.woff2') format('woff2')}
@font-face{font-family:'Space Mono';font-style:normal;font-weight:400;font-display:swap;src:url('/assets/fonts/space-mono-400.woff2') format('woff2')}
@font-face{font-family:'Space Mono';font-style:normal;font-weight:700;font-display:swap;src:url('/assets/fonts/space-mono-700.woff2') format('woff2')}

/* ---------- Tokens ---------- */
:root{
  --ink:#0C333C;        /* Petrol-Tinte: Text, dunkle Flächen */
  --ink80:#155062;      /* Petrol 80: sekundäre Dunkelfläche, Lead-Text */
  --paper:#F9F7F1;      /* Papier: Standard-Hintergrund */
  --paper2:#EFEDE3;     /* Papier dunkel: Karten, Zebra, Infoboxen */
  --basalt:#4F6167;     /* Sekundärtext, Bildunterschriften */
  --sand:#D9D4C7;       /* 1-px-Linien, Rahmen */
  --petrol:#0E7C8A;     /* DER Akzent: Cursor, Marker, CTAs, große Ziffern */
  --lagune:#45D4E3;     /* Akzent nur auf Tinte */
  --messing:#C99436;    /* Signal — max. 2× pro Seite */
  --white:#FFFFFF;      /* Text auf Petrol */
  --paper-70:rgba(249,247,241,.74);   /* Sekundärtext auf Tinte */
  --line-dark:rgba(249,247,241,.16);  /* Linien auf Tinte */
  --f-head:'Space Grotesk',Arial,Helvetica,sans-serif;
  --f-body:'Work Sans',Helvetica,Arial,sans-serif;
  --f-mono:'Space Mono','Courier New',monospace;
  --max:1120px;
  --r:10px;
  --header-h:68px;
}

/* ---------- Basis ---------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;height:auto}
button{font:inherit;cursor:pointer}
strong,b{font-weight:600}
::selection{background:var(--petrol);color:var(--white)}
:focus-visible{outline:2px solid var(--petrol);outline-offset:3px;border-radius:4px}
.skip-link{position:absolute;left:-9999px}
.skip-link:focus{left:16px;top:16px;z-index:1000;background:var(--ink);color:var(--paper);padding:10px 14px;border-radius:8px;font-family:var(--f-mono);font-size:13px}
.shell{width:min(calc(100% - 48px),var(--max));margin-inline:auto}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- Typografie ---------- */
h1,h2,h3,h4{font-family:var(--f-head);margin:0 0 .5em;color:inherit}
h1{font-weight:700;font-size:clamp(40px,5.4vw,60px);line-height:1.04;letter-spacing:-.02em}
h2{font-weight:700;font-size:clamp(28px,3.4vw,40px);line-height:1.12;letter-spacing:-.015em;max-width:28ch}
h3{font-weight:600;font-size:20px;line-height:1.3}
h4{font-weight:600;font-size:17px;line-height:1.35}
p{margin:0 0 1em}
.lead{font-size:19px;line-height:1.6;color:var(--ink80);max-width:62ch}
.muted{color:var(--basalt)}
.small{font-size:14px}
.kicker{display:block;font-family:var(--f-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--petrol);margin:0 0 14px}
.mono{font-family:var(--f-mono)}
.micro{font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--basalt);margin:14px 0 0}
.prompt{font-family:var(--f-mono)}
.prompt::before{content:"> "}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head .lead{margin-top:6px}
ul,ol{margin:0 0 1em;padding-left:0}
/* Listen: Gedankenstrich statt Punkt */
ul.dash{list-style:none}
ul.dash li{position:relative;padding-left:22px;margin:0 0 8px}
ul.dash li::before{content:"–";position:absolute;left:0;top:0;color:var(--basalt);font-family:var(--f-mono)}
.on-dark ul.dash li::before{color:var(--lagune)}

/* ---------- Markenbausteine ---------- */
/* 1 · Cursor-Block */
.cursor{display:inline-block;width:.42em;height:.74em;background:var(--petrol);vertical-align:baseline;margin-left:.14em;border-radius:1px;animation:blink 1s step-end infinite}
.on-dark .cursor,.dark .cursor{background:var(--lagune)}
@keyframes blink{50%{opacity:0}}
/* 2 · Prompt-Zeile: .prompt (oben) */
/* 3 · Marker-Balken */
.marker{display:block;width:44px;height:5px;border-radius:3px;background:var(--petrol);margin:0 0 18px}
.on-dark .marker{background:var(--lagune)}
/* 4 · 80/20-Balken */
.bar8020{display:flex;height:52px;border-radius:8px;overflow:hidden;border:1px solid var(--sand);font-family:var(--f-mono);font-size:13px;letter-spacing:.04em;margin:0 0 12px}
.bar8020 .b80{flex:0 0 80%;background:var(--petrol);color:var(--white);display:flex;align-items:center;padding:0 18px;font-weight:700;white-space:nowrap}
.bar8020 .b20{flex:1;background:var(--paper2);color:var(--ink);display:flex;align-items:center;padding:0 14px;white-space:nowrap;overflow:hidden}
.bar8020-caption{font-family:var(--f-mono);font-size:12px;color:var(--basalt);letter-spacing:.06em;margin:0}
/* Wortmarke */
.wordmark{display:inline-flex;align-items:baseline;font-family:var(--f-head);font-weight:600;font-size:19px;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
.wordmark .cursor{width:.38em;height:.7em}
.on-dark .wordmark{color:var(--paper)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;text-align:center;gap:8px;min-height:50px;padding:12px 24px;border-radius:9px;border:1.5px solid transparent;font-family:var(--f-head);font-weight:600;font-size:16px;line-height:1.2;transition:background-color .18s ease,color .18s ease,border-color .18s ease}
.btn-primary{background:var(--petrol);color:var(--white)}
.btn-primary:hover{background:var(--ink);color:var(--paper)}
.on-dark .btn-primary:hover{background:var(--lagune);color:var(--ink)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--paper2)}
.on-dark .btn-ghost{border-color:rgba(249,247,241,.45);color:var(--paper)}
.on-dark .btn-ghost:hover{border-color:var(--lagune);color:var(--lagune);background:transparent}
.btn-wide{width:100%}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.text-link{font-family:var(--f-head);font-weight:600;color:var(--ink);border-bottom:2px solid var(--sand);padding-bottom:2px;transition:border-color .15s}
.text-link:hover{border-color:var(--petrol)}
.on-dark .text-link{color:var(--paper);border-color:var(--line-dark)}
.on-dark .text-link:hover{border-color:var(--lagune)}

/* ---------- Flächen ---------- */
.section{padding:96px 0}
.section-soft{background:var(--paper2)}
.section-dark,.on-dark{background:var(--ink);color:var(--paper)}
.section-dark-secondary{background:var(--ink80);color:var(--paper)}
.on-dark .kicker{color:var(--lagune)}
.on-dark .lead{color:var(--paper)}
.on-dark .muted,.on-dark .micro{color:var(--paper-70)}
.on-dark p{color:var(--paper-70)}
.on-dark p.lead,.on-dark h1,.on-dark h2,.on-dark h3{color:var(--paper)}
.rule{border:0;border-top:1px solid var(--sand);margin:28px 0}
.on-dark .rule{border-color:var(--line-dark)}
.card{background:var(--paper);border:1px solid var(--sand);border-radius:var(--r);padding:28px}
.card-soft{background:var(--paper2);border:0;border-radius:var(--r);padding:28px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(249,247,241,.94);border-bottom:1px solid var(--sand);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.nav-wrap{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center}
.main-nav{display:flex;gap:28px;align-items:center;font-weight:500;font-size:15px}
.main-nav a{padding:6px 0;border-bottom:2px solid transparent;transition:border-color .15s}
.main-nav a:hover{border-color:var(--petrol)}
.main-nav .nav-cta{border:0;padding:0 16px}
.main-nav .nav-cta:hover{border:0}
.menu-button{display:none;background:transparent;border:1px solid var(--sand);border-radius:8px;padding:9px 12px;font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;color:var(--ink)}
.menu-button[aria-expanded="true"]{background:var(--paper2)}

/* ---------- Hero (Papier) ---------- */
.hero{padding:88px 0 72px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);gap:64px;align-items:center}
.hero h1{margin-bottom:22px;min-height:2.1em}
.hero h1 .typed{color:var(--petrol)}
.hero h1 .cursor{width:.36em;height:.82em;vertical-align:baseline;margin-left:.1em;background:var(--petrol);border-radius:2px}
.proofline{font-family:var(--f-mono);font-size:15px;letter-spacing:.02em;color:var(--ink);margin:0 0 22px}
.hero-lead{font-size:19px;line-height:1.62;max-width:60ch;color:var(--ink80);margin-bottom:30px}
.hero-lead strong{color:var(--ink)}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero .micro{margin-top:16px}
.hero-facts{display:flex;flex-wrap:wrap;gap:0 28px;margin-top:34px;padding-top:22px;border-top:1px solid var(--sand);font-family:var(--f-mono);font-size:12.5px;letter-spacing:.06em;color:var(--basalt)}
.hero-facts span{position:relative}
.hero-facts span+span::before{content:"·";position:absolute;left:-18px;color:var(--sand)}

/* Prompt-Karte (Tinte) */
.promptcard{background:var(--ink);color:var(--paper);border-radius:var(--r);padding:26px 28px 24px}
.promptcard .pc-head{font-family:var(--f-mono);font-size:13px;color:var(--lagune);margin:0 0 22px;padding-bottom:16px;border-bottom:1px solid var(--line-dark)}
.promptcard .pc-label{font-family:var(--f-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--paper-70);margin:0 0 6px}
.pc-step{display:grid;grid-template-columns:40px 1fr;gap:4px 14px;padding:14px 0;border-bottom:1px solid var(--line-dark)}
.pc-step:last-of-type{border-bottom:0}
.pc-step b{grid-row:1/3;font-family:var(--f-mono);font-weight:700;font-size:15px;color:var(--lagune);padding-top:2px}
.pc-step span{font-family:var(--f-head);font-weight:600;font-size:17px;color:var(--paper)}
.pc-step small{font-size:14px;color:var(--paper-70)}
.pc-foot{margin:18px 0 0;padding-top:16px;border-top:1px solid var(--line-dark);font-size:15px;color:var(--paper-70)}
.pc-foot strong{color:var(--paper)}

/* Vertrauens-Zeile */
.proof-strip{border-top:1px solid var(--sand);border-bottom:1px solid var(--sand);padding:22px 0}
.proof-grid{display:flex;flex-wrap:wrap;gap:14px 40px;align-items:center}
.proof-grid div{display:flex;flex-direction:column;gap:2px}
.proof-kicker{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--basalt)}
.proof-grid strong{font-family:var(--f-head);font-weight:600;font-size:17px;color:var(--ink)}
.proof-person{margin-left:auto}

/* ---------- Problem-Spiegel ---------- */
.problem-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.problem-card{background:var(--paper2);border-radius:var(--r);padding:26px 24px 22px}
.card-index{display:block;font-family:var(--f-mono);font-size:13px;color:var(--basalt);margin-bottom:16px}
.problem-card h3{font-size:18px;margin-bottom:10px}
.problem-card p{font-size:15.5px;color:var(--ink80);margin:0}

/* ---------- Positionierung (Tinte) ---------- */
.usp-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:56px;align-items:start}
.check-list{list-style:none;margin:22px 0 0}
.check-list li{position:relative;padding-left:26px;margin-bottom:10px;line-height:1.5}
.check-list li::before{content:"";position:absolute;left:0;top:.72em;width:12px;height:3px;border-radius:2px;background:var(--petrol)}
.on-dark .check-list li::before{background:var(--lagune)}
.on-dark .check-list li{color:var(--paper)}

/* ---------- Vorher / Nachher ---------- */
.before-after{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--sand);border-bottom:1px solid var(--sand)}
.state-card{padding:34px 36px 30px}
.state-card+.state-card{border-left:1px solid var(--sand)}
.state-label{font-family:var(--f-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--basalt);margin:0 0 18px}
.state-after .state-label{color:var(--petrol)}
.state-card ul{list-style:none;margin:0}
.state-card li{position:relative;padding-left:22px;margin-bottom:10px;font-size:16.5px;line-height:1.5}
.state-card li::before{content:"–";position:absolute;left:0;font-family:var(--f-mono);color:var(--basalt)}
.state-after li::before{content:"–";color:var(--petrol)}
.state-before li{color:var(--basalt)}

/* ---------- Leistungsstufen ---------- */
.offer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.offer-card{background:var(--paper);border:1px solid var(--sand);border-radius:var(--r);padding:30px 28px 28px;display:flex;flex-direction:column;position:relative}
.offer-featured{border-color:var(--ink)}
.featured-tag{position:absolute;top:-13px;left:24px;font-family:var(--f-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;background:var(--messing);color:var(--ink);padding:5px 10px;border-radius:6px}
.offer-number{font-family:var(--f-mono);font-size:12.5px;letter-spacing:.12em;color:var(--basalt);margin-bottom:14px}
.offer-card h3{font-size:22px;margin-bottom:8px}
.offer-sub{color:var(--ink80);margin-bottom:14px;font-size:16px}
.offer-card p{font-size:15.5px}
.offer-card ul{list-style:none;margin:0 0 22px;flex:1;border-top:1px solid var(--sand);padding-top:16px}
.offer-card li{position:relative;padding-left:20px;margin-bottom:7px;font-size:15px}
.offer-card li::before{content:"–";position:absolute;left:0;font-family:var(--f-mono);color:var(--basalt)}
.offer-card .text-link{align-self:flex-start}

/* ---------- MACHEN-Methode (Tinte) ---------- */
.method-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:56px;align-items:start}
.method-heading{position:sticky;top:calc(var(--header-h) + 32px)}
.method-heading .lead{max-width:34ch}
.method-list{border-top:1px solid var(--line-dark)}
.method-item{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:22px 0;border-bottom:1px solid var(--line-dark);align-items:start}
.method-item b{font-family:var(--f-mono);font-weight:700;font-size:38px;line-height:1;color:var(--lagune)}
.method-item h3{font-size:19px;margin-bottom:4px;color:var(--paper)}
.method-item p{margin:0;font-size:15.5px;color:var(--paper-70)}

/* ---------- Use Cases ---------- */
.usecase-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0 36px;border-top:1px solid var(--sand)}
.usecase{padding:26px 0 22px;border-bottom:1px solid var(--sand)}
.usecase-icon{display:inline-block;font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;background:var(--paper2);color:var(--ink80);padding:5px 9px;border-radius:6px;margin-bottom:16px}
.usecase h3{font-size:18px;margin-bottom:8px}
.usecase p{font-size:15.5px;color:var(--ink80);margin-bottom:12px}
.usecase small{font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;color:var(--basalt)}

/* ---------- Format (80/20) & Workshops ---------- */
.format-block{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:40px;align-items:center;padding:34px 0;border-top:1px solid var(--sand);border-bottom:1px solid var(--sand);margin-bottom:48px}
.facts{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 24px}
.fact .n{display:block;font-family:var(--f-mono);font-weight:700;font-size:26px;line-height:1.1;color:var(--ink);margin-bottom:4px}
.fact .t{font-size:14px;color:var(--basalt)}
.workshop-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.workshop-card{background:var(--paper);border:1px solid var(--sand);border-radius:var(--r);padding:28px;display:flex;flex-direction:column;transition:border-color .18s}
.workshop-card:hover{border-color:var(--petrol)}
.workshop-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px}
.workshop-top .prompt{font-size:12.5px;background:var(--ink);color:var(--lagune);padding:6px 11px;border-radius:6px}
.workshop-top .dur{font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;color:var(--basalt)}
.workshop-card h3{font-size:22px;margin-bottom:6px}
.workshop-card>p{color:var(--ink80);font-size:16px;margin-bottom:16px}
.workshop-card ul{list-style:none;margin:0 0 22px;flex:1;border-top:1px solid var(--sand);padding-top:14px}
.workshop-card li{position:relative;padding-left:20px;margin-bottom:6px;font-size:15px}
.workshop-card li::before{content:"–";position:absolute;left:0;font-family:var(--f-mono);color:var(--basalt)}
.workshop-card .text-link{align-self:flex-start}

/* ---------- Warum ---------- */
.why-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:0 28px;border-top:1px solid var(--sand)}
.why{padding:26px 0 8px}
.why b{display:block;font-family:var(--f-mono);font-weight:700;font-size:22px;color:var(--ink);margin-bottom:14px}
.why h3{font-size:17px;margin-bottom:8px}
.why p{font-size:15px;color:var(--ink80);margin:0}

/* ---------- Transfer / Operating Kit ---------- */
.operating-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:56px;align-items:start}
.operating-grid .sec-head{margin-bottom:0}
.kit-grid{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--sand);border-radius:var(--r);overflow:hidden}
.kit-item{padding:22px 20px;border-right:1px solid var(--sand);border-bottom:1px solid var(--sand);display:flex;flex-direction:column;gap:10px;background:var(--paper)}
.kit-item:nth-child(3n){border-right:0}
.kit-item:nth-last-child(-n+3){border-bottom:0}
.kit-item b{font-family:var(--f-mono);font-size:12px;color:var(--basalt);font-weight:400}
.kit-item span{font-family:var(--f-head);font-weight:600;font-size:16px}

/* ---------- Governance ---------- */
.governance-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:start}
.governance-card{background:var(--paper);border:1px solid var(--sand);border-radius:var(--r);padding:30px}
.governance-card h3{font-size:18px}
.governance-card .check-list{margin-top:14px}
.governance-card .check-list li{font-size:15.5px}
.governance-card hr{border:0;border-top:1px solid var(--sand);margin:22px 0}

/* ---------- AI Literacy (Petrol 80) ---------- */
.ai-box{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:56px;align-items:start}
.ai-box h2{font-size:clamp(24px,2.8vw,32px)}
.legal-note{font-size:14px;color:var(--paper-70)}

/* ---------- Über Maik ---------- */
.about-grid{display:grid;grid-template-columns:320px minmax(0,1fr);gap:64px;align-items:start}
.profile-card{position:sticky;top:calc(var(--header-h) + 32px)}
.profile-photo{border-radius:var(--r);overflow:hidden;background:var(--paper2);aspect-ratio:4/5}
.profile-photo img{width:100%;height:100%;object-fit:cover}
.profile-meta{margin-top:14px;display:flex;flex-direction:column;gap:2px}
.profile-meta strong{font-family:var(--f-head);font-weight:600;font-size:17px}
.profile-meta span{font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;color:var(--basalt)}
.about-copy blockquote{margin:22px 0;padding:6px 0 6px 22px;border-left:3px solid var(--ink);font-family:var(--f-head);font-weight:600;font-size:21px;line-height:1.4;max-width:30ch}
.about-facts{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.about-facts span{font-family:var(--f-mono);font-size:12px;letter-spacing:.04em;border:1px solid var(--sand);border-radius:6px;padding:7px 11px;color:var(--ink80)}

/* ---------- Proof ---------- */
.case-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:20px;align-items:stretch}
.testimonial{background:var(--paper);border:1px solid var(--sand);border-radius:var(--r);padding:32px;display:flex;flex-direction:column}
.quote-bar{display:block;width:44px;height:5px;border-radius:3px;background:var(--petrol);margin:0 0 22px}
.testimonial blockquote{margin:0 0 22px;font-family:var(--f-head);font-weight:500;font-size:22px;line-height:1.42;flex:1;display:flex;align-items:center}
.quote-source{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.1em;color:var(--basalt);margin:0;padding-top:16px;border-top:1px solid var(--sand)}
.case-blueprint{background:var(--paper);border:1px solid var(--sand);border-radius:var(--r);padding:32px}
.case-tag{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.14em;color:var(--basalt);margin:0 0 12px}
.case-blueprint h3{font-size:20px;margin-bottom:16px}
.case-blueprint dl{margin:0 0 16px;border-top:1px solid var(--sand)}
.case-blueprint dl div{display:grid;grid-template-columns:130px 1fr;gap:14px;padding:11px 0;border-bottom:1px solid var(--sand)}
.case-blueprint dt{font-family:var(--f-mono);font-size:12.5px;color:var(--basalt);padding-top:2px}
.case-blueprint dd{margin:0;font-size:15.5px}
.case-note{font-size:14px;color:var(--basalt);margin:0}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,.75fr) minmax(0,1.25fr);gap:56px;align-items:start}
.faq-heading{position:sticky;top:calc(var(--header-h) + 32px)}
.faq-heading p{color:var(--ink80);max-width:32ch}
.faq-list{border-top:1px solid var(--sand)}
.faq-list details{border-bottom:1px solid var(--sand)}
.faq-list summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:18px 0;font-family:var(--f-head);font-weight:600;font-size:17.5px;line-height:1.35}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";font-family:var(--f-mono);font-size:22px;line-height:1;color:var(--petrol);flex-shrink:0}
.faq-list details[open] summary::after{content:"–"}
.faq-list details p{margin:0 0 20px;padding-right:44px;font-size:16px;color:var(--ink80);max-width:70ch}

/* ---------- Kontakt (Tinte) ---------- */
.contact{background:var(--ink);color:var(--paper);padding:104px 0}
.contact-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:64px;align-items:start}
.contact-lead{font-size:18.5px;line-height:1.6;color:var(--paper-70);max-width:52ch}
.contact-card{background:var(--ink80);border:1px solid var(--line-dark);border-radius:var(--r);padding:30px 32px}
.contact-card .prompt{display:block;font-size:13px;color:var(--lagune);margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--line-dark)}
.contact-card h3{font-size:24px;margin-bottom:18px;color:var(--paper)}
.contact-card ol{list-style:none;counter-reset:q;margin:0 0 26px}
.contact-card li{counter-increment:q;position:relative;padding-left:40px;margin-bottom:14px;font-size:15.5px;line-height:1.5;color:var(--paper-70)}
.contact-card li strong{display:block;color:var(--paper);font-family:var(--f-head);font-weight:600;font-size:16.5px}
.contact-card li::before{content:"0" counter(q);position:absolute;left:0;top:2px;font-family:var(--f-mono);font-size:13px;color:var(--lagune)}
.contact-card .micro{margin-top:14px;color:var(--paper-70)}
.contact-mail{margin:14px 0 0;font-size:15px;color:var(--paper-70)}
.contact-mail a{color:var(--paper);border-bottom:1px solid var(--line-dark)}
.contact-mail a:hover{border-color:var(--lagune)}

/* ---------- Footer (Papier) ---------- */
.site-footer{border-top:1px solid var(--sand);padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));gap:36px}
.footer-grid p{margin:16px 0 0;font-size:15px;color:var(--ink80);max-width:36ch}
.footer-grid .proofline{font-size:13px;margin:8px 0 0;color:var(--basalt)}
.footer-title{font-family:var(--f-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--basalt);margin:0 0 14px}
.footer-grid a,.footer-grid span{display:block;font-size:15px;margin-bottom:8px}
.footer-grid a:hover{color:var(--petrol)}
.footer-grid .brand{display:inline-flex;margin:0}
.footer-grid .wordmark{display:inline-flex;margin:0}
.footer-grid .wordmark .cursor{display:inline-block;margin-bottom:0}
.footer-grid .brand:hover{color:var(--ink)}
.footer-bottom{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;margin-top:44px;padding-top:18px;border-top:1px solid var(--sand);font-family:var(--f-mono);font-size:11.5px;color:var(--basalt);letter-spacing:.02em}
.footer-bottom span:nth-child(2){text-align:center}
.footer-bottom span:nth-child(3){text-align:right}

/* ---------- Unterseiten ---------- */
.subhero{padding:64px 0 0}
.breadcrumbs{font-family:var(--f-mono);font-size:12px;color:var(--basalt);margin:0 0 26px}
.breadcrumbs a{border-bottom:1px solid var(--sand)}
.breadcrumbs a:hover{border-color:var(--petrol)}
.subhero .prompt{display:block;font-size:14px;color:var(--petrol);margin-bottom:16px}
.subhero h1{font-size:clamp(34px,4.6vw,52px);max-width:22ch}
.subhero .hero-lead{margin-bottom:28px}
.subhero .facts-row{display:flex;flex-wrap:wrap;gap:0;margin-top:40px;border-top:1px solid var(--sand);border-bottom:1px solid var(--sand)}
.facts-row span{font-family:var(--f-mono);font-size:12.5px;letter-spacing:.08em;color:var(--ink);padding:16px 26px 16px 0;margin-right:26px;border-right:1px solid var(--sand)}
.facts-row span:last-child{border-right:0}
.content-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:56px;align-items:start}
.sticky-label{position:sticky;top:calc(var(--header-h) + 32px)}
.agenda-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:36px}
.agenda-card{background:var(--paper);border:1px solid var(--sand);border-radius:var(--r);padding:28px}
.agenda-card .day{font-family:var(--f-mono);font-size:12px;letter-spacing:.14em;color:var(--basalt);margin:0 0 8px}
.agenda-card h3{font-size:19px;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--sand)}
.agenda-card ul{list-style:none;margin:0}
.agenda-card li{position:relative;padding-left:20px;margin-bottom:9px;font-size:15.5px;line-height:1.5}
.agenda-card li::before{content:"–";position:absolute;left:0;font-family:var(--f-mono);color:var(--basalt)}
.format-note{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:32px;align-items:center}
.format-note p{margin:0;font-size:15px;color:var(--basalt)}
.benefit-list{display:grid;grid-template-columns:repeat(4,1fr);gap:0 28px;border-top:1px solid var(--sand)}
.benefit{padding:24px 0 12px}
.benefit b{display:block;font-family:var(--f-head);font-weight:600;font-size:18px;margin-bottom:8px}
.benefit p{font-size:15px;color:var(--ink80);margin:0}
.content-grid .benefit-list{grid-template-columns:1fr 1fr}
.sprint-timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:0 24px;border-top:1px solid var(--line-dark)}
.sprint-step{padding:26px 0 10px}
.sprint-num{font-family:var(--f-mono);font-weight:700;font-size:34px;line-height:1;color:var(--lagune);margin-bottom:16px}
.sprint-step h3{font-size:18px;margin-bottom:8px;color:var(--paper)}
.sprint-step p{font-size:15px;color:var(--paper-70);margin-bottom:12px}
.sprint-step small{font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;color:var(--paper-70)}
.next-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.next-card{background:var(--paper2);border-radius:var(--r);padding:28px;display:flex;flex-direction:column}
.next-card h3{font-size:19px;margin-bottom:8px}
.next-card p{font-size:15.5px;color:var(--ink80);flex:1}
.next-card .text-link{align-self:flex-start}

/* ---------- Rechtliches / 404 ---------- */
.legal-page{padding:64px 0 96px}
.legal-content{max-width:760px}
.legal-content h1{font-size:clamp(34px,4.4vw,48px);margin-bottom:28px}
.legal-content h2{font-size:22px;font-weight:600;margin:36px 0 10px;max-width:none}
.legal-content p{font-size:16.5px}
.legal-back{display:inline-block;margin-top:32px;font-family:var(--f-head);font-weight:600;border-bottom:2px solid var(--sand)}
.legal-back:hover{border-color:var(--petrol)}
.notfound{padding:120px 0 140px;text-align:center}
.notfound strong{display:block;font-family:var(--f-mono);font-weight:700;font-size:clamp(72px,12vw,120px);line-height:1;color:var(--petrol);margin-bottom:18px}
.notfound h1{font-size:clamp(28px,3.6vw,40px)}
.notfound p{color:var(--ink80);max-width:44ch;margin:0 auto 28px}

/* ---------- Reveal (dezent) ---------- */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .cursor{animation:none}
  html{scroll-behavior:auto}
}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .problem-grid{grid-template-columns:repeat(2,1fr)}
  .why-grid{grid-template-columns:repeat(3,1fr)}
  .benefit-list{grid-template-columns:repeat(2,1fr)}
  .sprint-timeline{grid-template-columns:repeat(3,1fr)}
  .about-grid{grid-template-columns:260px minmax(0,1fr);gap:40px}
}
@media (max-width:900px){
  .section{padding:72px 0}
  .contact{padding:80px 0}
  .menu-button{display:inline-block}
  .main-nav{display:none;position:absolute;left:0;right:0;top:var(--header-h);background:var(--paper);border-bottom:1px solid var(--sand);flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 18px}
  .main-nav.open{display:flex}
  .main-nav a{padding:13px 0;border-bottom:1px solid var(--sand)}
  .main-nav a:hover{border-color:var(--sand)}
  .main-nav .nav-cta{margin-top:14px;border-bottom:0}
  .hero{padding:56px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{min-height:0}
  .proof-person{margin-left:0}
  .usp-grid,.method-grid,.operating-grid,.governance-grid,.ai-box,.about-grid,.faq-layout,.contact-grid,.content-grid,.format-block,.format-note{grid-template-columns:1fr;gap:32px}
  .method-heading,.profile-card,.faq-heading,.sticky-label{position:static}
  .profile-card{max-width:320px}
  .before-after{grid-template-columns:1fr}
  .state-card+.state-card{border-left:0;border-top:1px solid var(--sand)}
  .state-card{padding:26px 0}
  .offer-grid,.next-grid,.agenda-grid{grid-template-columns:1fr}
  .usecase-grid{grid-template-columns:1fr 1fr;gap:0 28px}
  .workshop-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-bottom{grid-template-columns:1fr;text-align:left}
  .footer-bottom span:nth-child(2),.footer-bottom span:nth-child(3){text-align:left}
  .facts-row span{padding:12px 18px 12px 0;margin-right:18px}
}
@media (max-width:600px){
  .shell{width:min(calc(100% - 36px),var(--max))}
  body{font-size:16px}
  .problem-grid,.why-grid,.benefit-list,.usecase-grid,.kit-grid,.sprint-timeline,.facts,.footer-grid{grid-template-columns:1fr}
  .kit-item{border-right:0}
  .kit-item:nth-last-child(-n+3){border-bottom:1px solid var(--sand)}
  .kit-item:last-child{border-bottom:0}
  .bar8020{height:30px}
  .bar8020 .b80,.bar8020 .b20{font-size:0;padding:0}
  .hero-actions .btn{width:100%}
  .facts-row span{border-right:0;padding:10px 0;margin-right:0;width:100%}
  .case-blueprint dl div{grid-template-columns:1fr;gap:4px}
  .hero-facts{gap:8px 24px}
  .hero-facts span+span::before{display:none}
}

/* ==========================================================================
   v4.1 · Digital Change Leadership (Landingpage, Startseiten-Teaser, Format 04)
   Regeln unverändert: Papier, Linien statt Kästen, ein Petrol-Held pro Fläche,
   Zahlen in Mono, auf Tinte Akzente in Lagune.
   ========================================================================== */

/* Quellenverweise (Hochzahlen) */
.ref{font-family:var(--f-mono);font-size:.62em;line-height:0;vertical-align:super;margin-left:2px;white-space:nowrap}
.ref a{color:var(--basalt);border-bottom:1px solid var(--sand);padding-bottom:1px}
.ref a:hover{color:var(--ink);border-color:var(--petrol)}
.on-dark .ref a{color:var(--paper-70);border-color:var(--line-dark)}
.on-dark .ref a:hover{color:var(--lagune);border-color:var(--lagune)}
.stat-s .ref,.principle-cols .ref{margin-left:1px}

/* Drei Zahlen */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0 36px;border-top:1px solid var(--sand)}
.stat{padding:28px 0 24px;border-bottom:1px solid var(--sand);display:flex;flex-direction:column;gap:10px}
.stat-n{font-family:var(--f-mono);font-weight:700;font-size:clamp(40px,4.6vw,56px);line-height:1;color:var(--ink);letter-spacing:-.02em}
.stat-t{font-size:16px;line-height:1.5;color:var(--ink80);flex:1}
.stat-s{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--basalt)}

/* Ergebnisse (Tinte) */
.outcome-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0 32px;border-top:1px solid var(--line-dark)}
.outcome{padding:28px 0 16px}
.outcome-num{display:block;font-family:var(--f-mono);font-weight:700;font-size:34px;line-height:1;color:var(--lagune);margin-bottom:16px}
.outcome h3{font-size:20px;color:var(--paper);margin-bottom:12px}
.outcome p{font-size:15.5px;color:var(--paper-70)}
.outcome p strong,.outcome p em{color:var(--paper)}
.outcome-note{padding-top:12px;border-top:1px solid var(--line-dark);font-size:14.5px}
.evidence-caveat{margin:28px 0 0;padding-top:18px;border-top:1px solid var(--line-dark);font-size:14px;color:var(--paper-70);max-width:80ch}

/* Die drei Prinzipien */
.principle{padding:52px 0 44px;border-top:1px solid var(--sand)}
.principle:last-of-type{border-bottom:1px solid var(--sand)}
.principle-head{display:grid;grid-template-columns:96px 1fr;gap:24px;align-items:start;margin-bottom:34px}
.principle-num{font-family:var(--f-mono);font-weight:700;font-size:clamp(44px,5vw,64px);line-height:.9;color:var(--petrol);letter-spacing:-.03em}
.principle-head h3{font-weight:700;font-size:clamp(24px,2.8vw,32px);line-height:1.15;letter-spacing:-.015em;margin-bottom:8px;max-width:26ch}
.principle-sub{font-size:17.5px;color:var(--ink80);margin:0;max-width:60ch}
.principle-cols{display:grid;grid-template-columns:1.15fr 1fr .95fr;gap:36px;align-items:start}
.principle-cols h4{font-family:var(--f-mono);font-weight:400;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--basalt);margin:0 0 14px;padding-bottom:10px;border-bottom:1px solid var(--sand)}
.principle-cols ul.dash{margin:0}
.principle-cols li{font-size:15px;line-height:1.55;color:var(--ink)}
.principle-cols p{font-size:15px;line-height:1.55;color:var(--ink80)}
.principle-example{background:var(--paper2);border-radius:var(--r);padding:22px 22px 18px}
.principle-example h4{border-color:var(--sand)}
.principle-example p:last-child{margin-bottom:0}
.principle-links{font-size:14px;color:var(--basalt);margin:14px 0 0}
.principle-links .text-link{font-size:14px;border-bottom-width:1px}
.principles-note{margin:24px 0 0;font-size:14px;color:var(--basalt);max-width:80ch}

/* MACHEN-Verbindung */
.map-table{width:100%;border-collapse:collapse;font-size:15.5px;border-top:1px solid var(--sand)}
.map-table th{font-family:var(--f-mono);font-weight:400;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--basalt);text-align:left;padding:14px 16px 12px 0;border-bottom:1px solid var(--sand)}
.map-table td{padding:16px 16px 16px 0;border-bottom:1px solid var(--sand);vertical-align:top;line-height:1.5;color:var(--ink80)}
.map-table td:first-child{color:var(--ink);white-space:nowrap}
.map-table td:first-child b{display:inline-block;font-family:var(--f-mono);font-weight:700;font-size:24px;line-height:1;color:var(--ink);width:38px;vertical-align:baseline}
.map-table td:first-child span{font-family:var(--f-head);font-weight:600}
.map-table td:nth-child(2){font-family:var(--f-mono);font-size:12.5px;letter-spacing:.06em;color:var(--ink);white-space:nowrap;padding-top:19px}

/* Montagmorgen-Check */
.check-grid{list-style:none;counter-reset:c;display:grid;grid-template-columns:1fr 1fr;gap:0 40px;border-top:1px solid var(--sand);margin:0}
.check-grid li{counter-increment:c;position:relative;padding:18px 0 18px 46px;border-bottom:1px solid var(--sand);font-size:16px;line-height:1.5;color:var(--ink80)}
.check-grid li::before{content:"0" counter(c);position:absolute;left:0;top:21px;font-family:var(--f-mono);font-size:13px;color:var(--basalt)}
.check-grid li strong{display:block;font-family:var(--f-head);font-weight:600;color:var(--ink);font-size:16.5px;margin-bottom:2px}
.check-result{margin:26px 0 0;font-size:16px;color:var(--ink80);max-width:72ch}
.check-result strong{color:var(--ink)}

/* Executive Briefing (Tinte) */
.briefing-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:64px;align-items:start}
.briefing-grid .proofline{margin:6px 0 4px;font-size:17px;color:var(--paper)}
.briefing-grid .proofline+.micro{margin-top:0}
.briefing-grid .check-list{margin-top:26px}
.briefing-grid .check-list li{font-size:15.5px;color:var(--paper-70)}
.briefing-grid .contact-card li{padding-left:44px}

/* Quellen (eingeklappt) */
.sources-details{max-width:880px;border-top:1px solid var(--sand);border-bottom:1px solid var(--sand)}
.sources-details summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:18px 0;font-family:var(--f-head);font-weight:600;font-size:17.5px;line-height:1.35}
.sources-details summary::-webkit-details-marker{display:none}
.sources-details summary::after{content:"+";font-family:var(--f-mono);font-size:22px;line-height:1;color:var(--petrol);flex-shrink:0}
.sources-details[open] summary::after{content:"–"}
.sources-details[open] summary{border-bottom:1px solid var(--sand)}
.sources{list-style:none;counter-reset:q;margin:0;max-width:880px}
.sources li:last-child{border-bottom:0}
.sources li{counter-increment:q;position:relative;padding:13px 0 13px 46px;border-bottom:1px solid var(--sand);font-size:14.5px;line-height:1.5;color:var(--ink);scroll-margin-top:calc(var(--header-h) + 24px)}
.sources li::before{content:"[" counter(q) "]";position:absolute;left:0;top:15px;font-family:var(--f-mono);font-size:12px;color:var(--basalt)}
.sources li:target{background:var(--paper);margin:0 -14px;padding-left:60px;padding-right:14px;border-radius:6px}
.sources li:target::before{left:14px}
.sources a{border-bottom:1px solid var(--sand)}
.sources a:hover{border-color:var(--petrol)}
.src-meta{display:block;font-family:var(--f-mono);font-size:11.5px;line-height:1.5;color:var(--basalt);margin-top:3px}

/* Startseite: Prinzipien-Teaser & Format 04 */
.principles-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0 32px;border-top:1px solid var(--sand)}
.principle-card{padding:26px 0 18px;border-bottom:1px solid var(--sand)}
.principle-card b{display:block;font-family:var(--f-mono);font-weight:700;font-size:26px;color:var(--ink);margin-bottom:14px}
.principle-card h3{font-size:19px;margin-bottom:8px}
.principle-card p{font-size:15.5px;color:var(--ink80);margin-bottom:12px}
.principle-card small{font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;color:var(--basalt)}
.teaser-actions{display:flex;flex-wrap:wrap;gap:14px 28px;align-items:center;margin-top:34px}
.offer-row{margin-top:20px;background:var(--paper);border:1px solid var(--sand);border-radius:var(--r);padding:24px 28px;display:grid;grid-template-columns:110px minmax(0,1fr) auto;gap:24px;align-items:center}
.offer-row .offer-number{margin:0}
.offer-row h3{font-size:19px;margin-bottom:4px}
.offer-row p{font-size:15px;color:var(--ink80);margin:0}

/* Responsive v4.1 */
@media (max-width:1100px) and (min-width:901px){
  .main-nav{gap:18px;font-size:14px}
  .main-nav a{white-space:nowrap}
  .nav-wrap{gap:16px}
}
@media (max-width:1080px){
  .principle-cols{grid-template-columns:1fr 1fr}
  .principle-cols>.principle-example{grid-column:1/-1}
}
@media (max-width:900px){
  .stat-grid,.outcome-grid,.principles-grid,.check-grid{grid-template-columns:1fr}
  .briefing-grid{grid-template-columns:1fr;gap:32px}
  .principle-cols{grid-template-columns:1fr;gap:28px}
  .principle-head{grid-template-columns:64px 1fr;gap:16px}
  .offer-row{grid-template-columns:1fr;gap:12px}
  .map-table td:first-child{white-space:normal}
  .map-table td:nth-child(2){white-space:normal}
}
@media (max-width:600px){
  .map-table thead{display:none}
  .map-table tr{display:grid;grid-template-columns:1fr;gap:2px;padding:14px 0;border-bottom:1px solid var(--sand)}
  .map-table td{border:0;padding:0}
  .map-table td:nth-child(2){padding-top:2px}
  .sources li:target{margin:0;padding-left:46px;padding-right:0}
  .sources li:target::before{left:0}
}