@font-face{font-family:'Archivo';src:url('archivo-latin.woff2') format('woff2');font-weight:100 900;font-stretch:62% 125%;font-style:normal;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Archivo';src:url('archivo-ext.woff2') format('woff2');font-weight:100 900;font-stretch:62% 125%;font-style:normal;font-display:swap;unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}

:root{--ink:#000;--paper:#f5f3ee;--bg:#e6e4df;--grey:#5f5e59;--red:#d7301f;--gutter:22px}
*{box-sizing:border-box}
html{background:var(--bg);color:var(--ink);transition:background-color .9s ease,color .9s ease;font-family:'Archivo',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;font-size:19px;line-height:1.45;-webkit-text-size-adjust:100%;font-variant-numeric:tabular-nums}
body{margin:0;min-height:100vh}
a{color:inherit;text-underline-offset:.16em;text-decoration-thickness:1px}
a:hover{color:var(--red)}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}
h1,h2,h3{font-weight:600;letter-spacing:-.02em;line-height:1.05}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.mark{position:fixed;z-index:30;top:16px;left:var(--gutter);font-weight:800;font-stretch:125%;letter-spacing:-.02em;font-size:22px;line-height:1;text-decoration:none}
.mark:hover{color:var(--ink)}
.legal{position:fixed;z-index:30;left:var(--gutter);bottom:18px;display:flex;gap:18px;font-size:14px;color:var(--grey);margin:0}
.legal a{text-decoration:none}
.legal a:hover{text-decoration:underline;color:var(--ink)}

#haus{position:fixed;inset:0;width:100%;height:100%;display:block;z-index:0}
#scroller{height:1100vh}

/* ---------- 3D-Modus: Inhalte liegen als Beschriftungen im Raum ---------- */
.js3d .content{display:contents}
.js3d .hero{position:fixed;z-index:20;left:var(--gutter);top:50%;transform:translateY(-50%);max-width:min(56vw,760px);pointer-events:none;margin:0;opacity:0;visibility:hidden}
.hero h1{font-size:clamp(44px,8vw,124px);font-weight:700;font-stretch:112%;letter-spacing:-.045em;line-height:.9;margin:0}
.hero .role{font-size:21px;margin:.75em 0 0}
.hero .where{font-size:17px;color:var(--grey);margin:1.5em 0 0;line-height:1.4}
.js3d .hint{position:fixed;z-index:20;left:50%;bottom:20px;transform:translateX(-50%);margin:0;font-size:14px;color:var(--grey);text-align:center;pointer-events:none;white-space:nowrap;opacity:0;visibility:hidden}
.js3d .hint::before{content:'';display:block;width:1px;height:26px;background:var(--grey);margin:0 auto 8px}

.js3d .lab{position:fixed;z-index:20;left:0;top:0;opacity:0;visibility:hidden;will-change:transform,opacity;transform:translate(-50%,-50%);max-width:min(72vw,440px);padding-top:12px;border-top:1px solid var(--ink);pointer-events:none;margin:0}
.js3d .lab::before,.js3d .lab::after{content:'';position:absolute;top:-6px;width:1px;height:12px;background:var(--ink)}
.js3d .lab::before{left:0}
.js3d .lab::after{right:0}
.lab h2{font-size:30px;font-weight:600;font-stretch:108%;letter-spacing:-.02em;line-height:1.05;margin:0 0 .3em}
.lab p{margin:0;font-size:19px;line-height:1.4}
.lab a{pointer-events:auto;text-decoration:none;border-bottom:1px solid currentColor}
.lab .note{font-size:22px;font-stretch:104%;max-width:24ch;line-height:1.3}

/* Grundriss-Phase: Raumnamen, Maßketten, Blattrahmen, Plankopf */
.js3d .sheet{display:contents}
.js3d .plab{position:fixed;z-index:20;left:0;top:0;opacity:0;visibility:hidden;transform:translate(-50%,-50%);font-size:14px;white-space:nowrap;pointer-events:none}
.plab.stair{font-size:11px;color:var(--grey);transform:translate(-50%,-50%) rotate(-90deg)}
#dims{position:fixed;inset:0;width:100%;height:100%;z-index:15;pointer-events:none;opacity:0}
#dims line{stroke:var(--ink);stroke-width:1}
#dims .ext line{stroke:var(--grey);stroke-width:.6}
#dims text{font-size:13px;fill:var(--ink);font-family:inherit}
.frame{position:fixed;inset:12px;border:1px solid var(--ink);z-index:14;pointer-events:none;opacity:0;visibility:hidden}

.tb{width:310px;border:1px solid var(--ink);background:var(--paper);font-size:14px;line-height:1.3;color:var(--ink)}
.js3d .tb{position:fixed;z-index:26;right:var(--gutter);bottom:18px;opacity:0;visibility:hidden}
.tb-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:9px 11px 8px;border-bottom:1px solid var(--ink)}
.tb-mark{font-weight:800;font-stretch:125%;letter-spacing:-.02em;font-size:18px;line-height:1}
.tb-head span:last-child{text-align:right;line-height:1.25}
.tb dl{display:grid;grid-template-columns:94px 1fr;margin:0}
.tb dt{padding:5px 11px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);color:var(--grey)}
.tb dd{margin:0;padding:5px 11px;border-bottom:1px solid var(--ink)}
.tb-nav{display:flex;flex-wrap:wrap;gap:4px 16px;padding:8px 11px}
.tb-nav a{text-decoration:none}
.tb-nav a:hover{text-decoration:underline}

.map{position:fixed;z-index:25;top:14px;right:var(--gutter);width:168px;color:var(--ink);opacity:0;visibility:hidden}
.map svg{display:block;width:100%;height:auto;overflow:visible}
.map .hit{fill:transparent;pointer-events:all;cursor:pointer}
.map .hit:hover{fill:rgba(215,48,31,.09)}
.map text{font-family:inherit}

.mark,.legal,.hero,.lab,.plab,.hint,.map,.tb,.frame,.legende{transition:color .9s ease,background-color .9s ease,border-color .9s ease}
#dims line{transition:stroke .9s ease}
#dims text{transition:fill .9s ease}

/* Legende: anklickbare Schraffuren, jede zieht eine andere Welt auf */
.legende{position:fixed;z-index:27;right:var(--gutter);top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:9px;margin:0;padding:0;opacity:0;visibility:hidden}
.legende button{display:flex;align-items:center;justify-content:flex-end;gap:10px;background:none;border:0;padding:0;margin:0;font:inherit;font-size:12px;color:var(--grey);cursor:pointer}
.legende button span{opacity:0;transition:opacity .2s;white-space:nowrap}
.legende button:hover span,.legende button:focus-visible span,.legende button[aria-pressed=true] span{opacity:1}
.legende svg{width:34px;height:34px;display:block;border:1px solid var(--ink);flex:none}
.legende button[aria-pressed=true] svg{outline:2px solid var(--ink);outline-offset:2px}
.legende button:focus-visible{outline:none}
.legende button:focus-visible svg{outline:2px solid var(--red);outline-offset:2px}
html:not(.js3d) .legende{display:none}

.cross{position:fixed;inset:0;z-index:10;pointer-events:none;display:none;--x:-10px;--y:-10px}
@media (pointer:fine){.js3d .cross{display:block}}
.cross i{position:absolute;background:var(--ink);opacity:.13}
.cross .cx{top:0;bottom:0;width:1px;left:var(--x)}
.cross .cy{left:0;right:0;height:1px;top:var(--y)}

.js3d .planbig{display:none}
.jump{position:absolute;left:-9999px;top:0}
.jump button:focus{position:fixed;left:var(--gutter);top:60px;z-index:40;background:var(--paper);border:1px solid var(--ink);padding:6px 10px;font:inherit}

/* ---------- Ohne WebGL oder ohne JavaScript: ein ruhiges Blatt ---------- */
html:not(.js3d) #haus,html:not(.js3d) #scroller,html:not(.js3d) .cross,html:not(.js3d) .map,html:not(.js3d) #dims,html:not(.js3d) .frame,html:not(.js3d) .hint,html:not(.js3d) .plab,html:not(.js3d) .legal{display:none}
html:not(.js3d) .content{max-width:980px;margin:0 auto;padding:110px var(--gutter) 90px}
html:not(.js3d) .hero{margin:0 0 70px}
html:not(.js3d) .lab{margin:0 0 44px;padding-top:12px;border-top:1px solid var(--ink);max-width:440px}
html:not(.js3d) .planbig{max-width:720px;margin:20px 0 40px;color:var(--ink)}
html:not(.js3d) .planbig svg{width:100%;height:auto}
html:not(.js3d) .tb{margin-top:30px}

/* ---------- Blätter (Impressum, Datenschutz, 404) ---------- */
.sheet-page{background:var(--paper)}
.sheet-page .frame{opacity:1;visibility:visible;z-index:1}
.doc{position:relative;z-index:2;max-width:640px;margin:0;padding:110px var(--gutter) 60px;padding-left:max(var(--gutter),calc(50vw - 560px))}
.doc h1{font-size:clamp(34px,5vw,56px);font-weight:700;font-stretch:112%;letter-spacing:-.035em;margin:0 0 .35em}
.doc .lead{color:var(--grey);margin:0 0 2.2em;font-size:17px}
.doc h2{font-size:21px;margin:2em 0 .5em}
.doc p,.doc li{max-width:62ch}
.doc p{margin:0 0 1em}
.doc ul{padding-left:1.1em}
.doc address{font-style:normal}
.doc .todo{background:transparent;color:var(--red);border-bottom:1px dashed var(--red)}
.doc .back{display:inline-block;margin-top:2.5em;text-decoration:none;border-bottom:1px solid currentColor}
.ghost{position:fixed;right:calc(var(--gutter) + 8px);top:24px;width:min(34vw,520px);color:var(--ink);opacity:.08;pointer-events:none;z-index:1}
.ghost svg{width:100%;height:auto}
.sheet-page .tb{position:fixed;right:var(--gutter);bottom:18px;z-index:3}

/* ---------- Mobil ---------- */
@media (max-width:720px){
  :root{--gutter:16px}
  .mark{font-size:19px;top:14px}
  .js3d .hero{top:auto;bottom:92px;transform:none;max-width:90vw}
  .hero h1{font-size:clamp(40px,13.5vw,66px)}
  .hero .role{font-size:18px}
  .hero .where{font-size:15px;margin-top:1em}
  .js3d .hint{bottom:48px;font-size:12px}
  .js3d .hint::before{height:16px;margin-bottom:6px}
  .lab h2{font-size:24px}
  .lab p{font-size:16px}
  .lab .note{font-size:17px}
  .js3d .lab{max-width:62vw}
  .map{width:104px;top:10px}
  .tb{width:min(262px,calc(100vw - 32px));font-size:12px}
  .tb dl{grid-template-columns:78px 1fr}
  .tb-mark{font-size:16px}
  .js3d .tb{bottom:14px}
  .legal{font-size:12px;bottom:16px}
  .legende{top:44px;left:var(--gutter);right:auto;transform:none;flex-direction:row;gap:7px}
  .legende button span{display:none}
  .legende svg{width:26px;height:26px}
  .legende button[aria-pressed=true] svg{outline-offset:1px}
  .doc{padding-top:84px}
  .ghost{display:none}
  .sheet-page .tb{position:static;margin:40px var(--gutter) 40px;position:relative;z-index:2}
  .frame{inset:8px}
}
@media (max-height:520px) and (orientation:landscape){
  .js3d .hero{top:auto;bottom:56px;transform:none}
  .hero h1{font-size:clamp(36px,7vw,64px)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
}