/* ============================================================
   site.css — GEMEINSAMES CSS (Basis + Chrome) für ALLE Seiten.
   Single Source of Truth, auf jeder Seite ZULETZT im <head>.
   Aufbau nach humably-web, Farben + Typo nach ONX-CI
   (Briefpapier/Projektantrag 2026: Anthrazit #231f20, Grau
   #d8d6d7, Grotesk wie Arial/Helvetica, Versal-Titel Light+Bold,
   gesperrte Labels, graue Bogen-Ornamente).
   ============================================================ */
:root{
  --ink:#231f20;          /* ONX-Anthrazit (Briefkopf, Logo-Fläche) */
  --ink-soft:#4d494a;
  --ink-faint:#6e6a6b;
  --line:#d8d6d7;         /* ONX-Grau (Linien, Ornamente) */
  --line-soft:#ecebeb;
  --bg:#ffffff;
  --bg-alt:#f5f4f4;
  --card:#ffffff;
  --radius:4px;           /* CI ist kantig: Logo-Fläche + Tabellen ohne Rundung */
  --arc:64px;             /* Radius der Bogen-Ornamente */
  --maxw:1180px;
  --font:'Helvetica Neue',Helvetica,Arial,'Liberation Sans',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:clip}
body{font-family:var(--font);background:var(--bg);color:var(--ink);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:clip}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.skip-link{position:absolute;left:16px;top:-60px;z-index:200;background:var(--ink);color:#fff;padding:10px 16px;font-weight:700;font-size:14px}
.skip-link:focus{top:12px}
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:24px;padding-right:24px}

/* ---------- Typo nach CI ---------- */
.label{font-size:12px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-faint)}
.display{font-weight:300;text-transform:uppercase;letter-spacing:-.01em;line-height:1.02}
.display b,.display strong{font-weight:700}
h1,h2,h3{line-height:1.1;letter-spacing:-.01em}
h3{font-weight:700}
.sect-title{font-size:clamp(30px,4.4vw,52px);margin-top:16px}
.sect-lead{font-size:18px;color:var(--ink-soft);max-width:620px;margin-top:20px}
.rule{border:0;border-top:1px solid var(--ink);margin:0}
.section{padding:104px 0}
.section.alt{background:var(--bg-alt)}

/* ---------- Bogen-Ornamente (wie Briefpapier) ---------- */
.arc{position:absolute;pointer-events:none;border:1.5px solid var(--line)}
.arc-tr{border-left:0;border-bottom:0;border-top-right-radius:var(--arc)}
.arc-tl{border-right:0;border-bottom:0;border-top-left-radius:var(--arc)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:13px;letter-spacing:.14em;text-transform:uppercase;padding:16px 26px;border:1.5px solid var(--ink);transition:background .15s,color .15s;white-space:nowrap}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#000}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:transparent;color:#fff}
.btn-outline-light{color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:#fff;color:var(--ink)}
.more{font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;display:inline-flex;gap:8px;align-items:center;border-bottom:1.5px solid currentColor;padding-bottom:3px}

/* ============ HEADER (Anthrazit-Fläche wie Briefkopf) ============ */
.headwrap{position:fixed;top:0;left:0;right:0;z-index:100;padding:14px 16px;transition:padding .3s ease}
.headwrap.scrolled{padding:8px 16px}
.header{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:24px;background:var(--ink);color:#fff;padding:12px 12px 12px 26px;box-shadow:0 18px 40px -24px rgba(0,0,0,.5)}
.brand{display:block;flex-shrink:0;color:#fff}
.brand svg{height:40px;width:auto;display:block}
.nav{display:flex;align-items:center;gap:2px}
.nav>a{font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.72);padding:10px 14px;transition:color .15s;white-space:nowrap}
.nav>a:hover{color:#fff}
.head-cta{display:flex;align-items:center;gap:8px}
.head-cta .btn{padding:12px 18px;font-size:12px}
.burger{display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.35);background:transparent;color:#fff;cursor:pointer;place-items:center}
.mobilenav{display:none}
@media (max-width:1100px){
  .nav{display:none}
  .burger{display:grid}
  .mobilenav{position:fixed;top:86px;left:16px;right:16px;z-index:99;background:var(--ink);padding:10px;box-shadow:0 24px 50px -20px rgba(0,0,0,.5)}
  .mobilenav.open{display:block}
  .mobilenav a{display:block;padding:15px 16px;color:#fff;font-size:13px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;border-bottom:1px solid rgba(255,255,255,.1)}
  .mobilenav a:last-child{border-bottom:0}
}
@media (max-width:520px){.head-cta .btn{display:none}.brand svg{height:34px}}

/* ============ FOOTER ============ */
.footer{background:var(--ink);color:rgba(255,255,255,.7);padding:80px 0 36px;position:relative;overflow:hidden}
.footer .brand svg{height:52px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;position:relative}
.footer h3{color:#fff;font-size:12px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;margin-bottom:18px}
.footer ul{list-style:none;display:grid;gap:10px;font-size:15px}
.footer a:hover{color:#fff}
.foot-about{font-size:14.5px;line-height:1.6;max-width:360px;margin-top:22px}
.foot-bottom{margin-top:60px;padding-top:22px;border-top:1px solid rgba(255,255,255,.18);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55)}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr}}

/* ============ Unterseiten (Rechtstexte, Kurs) ============ */
.page-head{padding:180px 0 64px;position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-head h1{font-size:clamp(36px,5.4vw,64px);margin-top:18px}
.page-head p{font-size:18.5px;color:var(--ink-soft);max-width:640px;margin-top:22px}
.prose{max-width:760px;padding:72px 0 110px}
.prose h2{font-size:13px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-faint);margin:52px 0 14px}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--ink-soft)}
.prose p+p{margin-top:14px}
.prose ul{margin:12px 0 0 20px;display:grid;gap:8px}
.prose a{border-bottom:1px solid var(--ink)}
.facts-table{width:100%;border-collapse:collapse;margin-top:8px}
.facts-table th,.facts-table td{text-align:left;vertical-align:top;padding:14px 0;border-bottom:1px solid var(--line);font-size:16px}
.facts-table th{width:34%;font-weight:400;color:var(--ink-faint);padding-right:20px}
.note{margin-top:28px;padding:18px 20px;border-left:3px solid var(--ink);background:var(--bg-alt);font-size:15px;color:var(--ink-soft)}

@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}