/* ===== N°42 CI — HandbuchOS shared design system ===== */
:root{
  --bg:#07070a; --bg2:#0d0d12; --surface:#111119; --surface2:#15151f;
  --line:#232028; --line2:#302c38;
  --txt:#F6F2EC; --muted:#c3bcb2; --faint:#938c83;
  --gold:#c8a05a; --gold2:#e7c583; --golddim:rgba(200,160,90,.1);
  --blue:#1E4FD8; --blue2:#5B86F0; --bluedim:rgba(30,79,216,.14);
  --ok:#4ea87b;
  --max:1180px; --ease:cubic-bezier(.22,.8,.25,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--txt);
  font-family:"Helvetica Neue",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  line-height:1.65;-webkit-font-smoothing:antialiased;font-weight:400;overflow-x:hidden}
h1,h2,h3,.dsp{line-height:1.05;letter-spacing:-.035em;font-weight:300}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 26px}
.gold{color:var(--gold2)}.blue{color:var(--blue2)}
::selection{background:var(--golddim);color:var(--gold2)}

/* ambient bg */
.glow{position:fixed;inset:0;z-index:-2;pointer-events:none;background:
  radial-gradient(900px 500px at 50% -8%,rgba(200,160,90,.08),transparent 60%),
  radial-gradient(700px 500px at 85% 20%,rgba(30,79,216,.06),transparent 55%),var(--bg)}
.gridtex{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:74px 74px;-webkit-mask-image:radial-gradient(ellipse at 50% 0,#000,transparent 70%);mask-image:radial-gradient(ellipse at 50% 0,#000,transparent 70%)}

/* brand lockup */
.brand{display:flex;align-items:center;gap:12px}
.brand .lk{display:flex;align-items:baseline;gap:2px;font-weight:400;font-size:19px;letter-spacing:.02em}
.brand .lk .deg{font-size:11px;position:relative;top:-7px;color:var(--gold2)}
.brand .lk b{font-weight:500}
.brand .sep{width:1px;height:24px;background:var(--line2)}
.brand .prod{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:400}
.brand .prod b{color:var(--txt);font-weight:500}

/* nav */
header{position:sticky;top:0;z-index:60;backdrop-filter:blur(16px);background:rgba(7,7,10,.72);border-bottom:1px solid transparent;transition:.3s}
header.scr{border-bottom-color:var(--line);background:rgba(7,7,10,.92)}
.nav{display:flex;align-items:center;justify-content:space-between;height:78px}
.navlinks{display:flex;gap:30px;font-size:13.5px;color:var(--muted);font-weight:400}
.navlinks a{position:relative;transition:color .2s}
.navlinks a:hover{color:var(--txt)}
.navlinks a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:1px;background:var(--gold);transition:width .25s}
.navlinks a:hover::after{width:100%}
.navcta{display:flex;gap:12px;align-items:center}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:9px;font-family:inherit;font-weight:500;font-size:12px;letter-spacing:.09em;text-transform:uppercase;padding:14px 22px;cursor:pointer;border:1px solid transparent;transition:transform .18s,background .25s,color .25s,border-color .25s;white-space:nowrap}
.btn:active{transform:scale(.98)}
.btn-gold{background:var(--gold);color:#17120a;border-color:var(--gold)}
.btn-gold:hover{background:var(--gold2);border-color:var(--gold2)}
.btn-blue{background:var(--blue);color:#fff;border-color:var(--blue)}
.btn-blue:hover{background:var(--blue2);border-color:var(--blue2)}
.btn-g{background:transparent;border-color:var(--line2);color:var(--txt)}
.btn-g:hover{border-color:var(--gold);color:var(--gold2)}
.burger{display:none;background:transparent;border:1px solid var(--line2);width:44px;height:44px;cursor:pointer;color:var(--txt);font-size:18px}

/* language switcher */
.langsw{position:relative}
.langbtn{display:inline-flex;align-items:center;gap:6px;background:transparent;border:1px solid var(--line2);color:var(--txt);font-family:inherit;font-size:12px;font-weight:600;letter-spacing:.08em;padding:11px 12px;cursor:pointer;transition:border-color .2s,color .2s}
.langbtn:hover{border-color:var(--gold);color:var(--gold2)}
.langbtn .langcar{font-size:10px;opacity:.7}
.langmenu{position:absolute;top:calc(100% + 6px);right:0;min-width:150px;background:var(--surface);border:1px solid var(--line2);display:none;flex-direction:column;z-index:80;box-shadow:0 20px 50px rgba(0,0,0,.5)}
.langmenu.open{display:flex}
.langopt{background:transparent;border:0;border-bottom:1px solid var(--line);color:var(--muted);font-family:inherit;font-size:13.5px;text-align:left;padding:12px 15px;cursor:pointer;transition:.18s}
.langopt:last-child{border-bottom:0}
.langopt:hover{background:var(--bg2);color:var(--txt)}
.langopt.on{color:var(--gold2)}

/* mobile drawer */
.mnav{position:fixed;inset:0;z-index:70;background:rgba(7,7,10,.98);backdrop-filter:blur(12px);display:none;flex-direction:column;padding:26px}
.mnav.open{display:flex}
.mnav .mtop{display:flex;align-items:center;justify-content:space-between;margin-bottom:30px}
.mnav .mclose{background:transparent;border:1px solid var(--line2);width:44px;height:44px;color:var(--txt);font-size:20px;cursor:pointer}
.mnav .mlinks{display:flex;flex-direction:column;gap:2px}
.mnav .mlinks a{font-size:21px;font-weight:300;color:var(--txt);padding:15px 4px;border-bottom:1px solid var(--line)}
.mnav .mcta{display:flex;flex-direction:column;gap:12px;margin-top:28px}
.mnav .mcta .btn{width:100%;justify-content:center;padding:16px}

/* reveal */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.07s}.rv.d2{transition-delay:.14s}.rv.d3{transition-delay:.21s}.rv.d4{transition-delay:.28s}
@media(prefers-reduced-motion:reduce){.rv{transition:none;opacity:1;transform:none}}

.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:11px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--gold2)}
.eyebrow::before{content:"";width:32px;height:1px;background:var(--gold)}
.eyebrow.b{color:var(--blue2)}.eyebrow.b::before{background:var(--blue)}
section{padding:106px 0;position:relative}
.shead{max-width:760px;margin-bottom:54px}
.shead h2{font-size:clamp(30px,4.4vw,50px);margin:22px 0 18px}
.shead p{color:var(--muted);font-size:17px;max-width:640px}

/* cards grid helper */
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.g2{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.cell{background:var(--bg);padding:32px 28px;transition:background .3s}
.cell:hover{background:var(--surface)}

/* footer */
footer{padding:50px 0 40px;border-top:1px solid var(--line);color:var(--muted)}
.foot{display:flex;justify-content:space-between;align-items:center;gap:22px;flex-wrap:wrap;font-size:13px}
.foot .fl{display:flex;gap:22px}
.foot a:hover{color:var(--txt)}

@media(max-width:920px){
  .navlinks{display:none}.burger{display:grid;place-items:center}
  .g3,.g2{grid-template-columns:1fr}
  section{padding:72px 0}
  .navcta .btn-g,.navcta .btn-gold{display:none}
  .nav .langsw{margin-right:4px}
}
@media(max-width:620px){
  .wrap{padding:0 18px}
  .nav{height:64px}
  section{padding:56px 0}
  .shead{margin-bottom:38px}
  .shead h2{font-size:clamp(25px,7vw,34px)}
  .shead p{font-size:15.5px}
  .btn{padding:14px 18px;font-size:11.5px}
  .brand .prod{display:none}
  .brand .sep{display:none}
  .foot{flex-direction:column;align-items:flex-start;gap:14px}
  .langbtn{padding:10px 10px}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}