/* ERIS² – Öffentliche Startseite (Pre-Login, „Titelblatt A").
   Bewusst eigenständig: nutzt NICHT das Branding-System (feste Design-Tokens der
   Bauvorgaben). Kein JavaScript. Strict-CSP-konform (externe Datei, keine Inline-Styles). */
:root{--hinweis:#8a3a75;--hinweis-tint:#f4ebf2;
  --chamois:#f2ede4;
  --ink:#262320;
  --grey80:#4b463f;
  --body:#433e37;
  --muted:#867f72;
  --hair:#d9d3c6;
  --blue:#004B8D;
  --blue-deep:#003a6e;
  --pad:clamp(30px,5vw,68px);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--chamois);color:var(--body);
  font-family:"Source Sans 3",system-ui,sans-serif;line-height:1.55;
  -webkit-font-smoothing:antialiased;
}

.hero{
  min-height:100vh; min-height:100svh;
  display:flex;flex-direction:column;
  padding:var(--pad);
  max-width:1240px;margin:0 auto;
}

/* Universität — offizielles Logo unten links im Footer */
.unilogo{display:inline-block;line-height:0}
.unilogo img{display:block;height:clamp(28px,4vw,40px);width:auto;max-width:min(48vw,320px)}

/* Bühne: Wortmarke sitzt zum unteren Drittel hin */
.stage{
  margin-top:auto;display:flex;flex-direction:column;gap:18px;
  opacity:0;transform:translateY(12px);
  animation:rise .8s cubic-bezier(.2,.7,.2,1) .05s forwards;
}
@keyframes rise{to{opacity:1;transform:none}}

.lockup{display:flex;align-items:center;gap:clamp(16px,2vw,26px)}
.stage .btn{align-self:flex-start;margin-top:clamp(8px,1.4vh,16px)}
.mark{
  --mark-size:clamp(46px,7.5vw,82px);--g:.045;
  display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;
  gap:calc(var(--mark-size)*var(--g));width:var(--mark-size);height:var(--mark-size);flex:none;
}
.mark span{display:block}
.mark .t1{background:var(--ink)}
.mark .t2{background:var(--grey80)}
.mark .t3{background:var(--grey80)}
.mark .t4{background:var(--blue)}

.wordmark{
  font-family:"Lora",serif;color:var(--ink);font-weight:500;
  line-height:.95;letter-spacing:-.02em;
  font-size:clamp(56px,11vw,118px);margin:0;
}
.wordmark sup{font-size:.40em;font-weight:400;top:-.72em;left:.03em;position:relative}

.expansion{
  font-size:clamp(12px,1.4vw,14px);letter-spacing:.14em;text-transform:uppercase;
  color:var(--body);font-weight:500;line-height:1.55;margin:0;
}
.expansion b{color:var(--blue);font-weight:700}   /* Initialen E·R·I·S in Uniblau */

/* Fußzeile: Logo links, Meta rechts */
.foot{
  margin-top:auto;padding-top:24px;border-top:1px solid var(--hair);
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--blue);color:#fff;border:none;cursor:pointer;
  font-family:inherit;font-size:15px;font-weight:600;letter-spacing:.01em;
  padding:12px 26px;text-decoration:none;
  transition:background .18s ease,transform .18s ease;
}
.btn:hover{background:var(--blue-deep);transform:translateY(-1px)}
.btn:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.btn .arr{transition:transform .18s ease}
.btn:hover .arr{transform:translateX(3px)}
.meta{font-size:11px;color:var(--muted);text-align:right;letter-spacing:.04em;line-height:1.5}

@media (max-width:560px){
  .meta{text-align:left}
}
@media (prefers-reduced-motion:reduce){
  .stage{animation:none;opacity:1;transform:none}
  *{transition:none!important}
}